Sample records for oil rig explosion

  1. Oil Spill Response and Research The 2010 Deepwater Horizon rig explosion and your health

    E-print Network

    Bezrukov, Sergey M.

    Oil Spill Response and Research The 2010 Deepwater Horizon rig explosion and your health Safety in responding to the oil spill crisis. The GuLF STUDY will help determine if oil spills, and exposure to crude the largest research enterprise ever conducted on human health and oil spills. PO Box 12233 · Research

  2. Oil well service rig

    Microsoft Academic Search

    1981-01-01

    An oil well service rig having three reels, two of the reels actuated by a hydraulic pump through a gear box which provides for selective engagement or disengagement and a two speed gear ratio change for either reel, the hydraulic pump being driven by a gasoline engine. An independent hydraulically operated brake system is utilized on the reels wherein one

  3. Oil well service rig

    SciTech Connect

    Allen, W.H.

    1981-03-24

    An oil well service rig having three reels, two of the reels actuated by a hydraulic pump through a gear box which provides for selective engagement or disengagement and a two speed gear ratio change for either reel, the hydraulic pump being driven by a gasoline engine. An independent hydraulically operated brake system is utilized on the reels wherein one side of each reel is provided with a greater diameter than the other side, the larger side having a brake caliper pad assembly in engagement therewith. A smaller reel, also controlled by the hydraulic motor, controls the inclination and disposition of a mast having a double sheave assembly at its top receiving cables from each main reel for raising and lowering tools into the oil well shaft.

  4. Oil well drilling rig mover

    Microsoft Academic Search

    C. Jenkins; J. R. Woolslayer

    1983-01-01

    An oil well drilling rig mover is formed from a pair of laterally spaced dollies detachably connected by braces between them. Each of the dollies includes a beam for resting on a support, and a pair of laterally spaced wheels at each end of the beam. An arm extends outwardly from the outer end of a tiltable support member that

  5. Oil well rig with water tower

    Microsoft Academic Search

    Younes

    1984-01-01

    An oil well rig having a flotatable hull and support legs which are lifted and supported by the floating hull for moving the oil well rig and moved down to engage the sea bottom and jack up or raise the hull above the water at an operating site for drilling or servicing a well or serving an offshore well platform.

  6. Shale oil explosives

    Microsoft Academic Search

    E. D. York; D. D. Porter

    1984-01-01

    Ammonium nitrate shale oil explosives are provided which are effective, powerful, inexpensive, and safe. The explosives contain about 2% to 10% by weight shale oil and about 90% to 98% by weight ammonium nitrate. The shale oil can be whole shale oil or heavy shale oil containing from 0.1% to 65% by weight oil shale dust. The ammonium nitrate is

  7. Shale oil explosives

    SciTech Connect

    York, E.D.; Porter, D.D.

    1984-10-09

    Ammonium nitrate shale oil explosives are provided which are effective, powerful, inexpensive, and safe. The explosives contain about 2% to 10% by weight shale oil and about 90% to 98% by weight ammonium nitrate. The shale oil can be whole shale oil or heavy shale oil containing from 0.1% to 65% by weight oil shale dust. The ammonium nitrate is preferably in the form of explosive grade ammonium nitrate prills.

  8. Oil rigs in full polarization SAR imges

    NASA Astrophysics Data System (ADS)

    Chen, Peng; Yang, Jingsong; Wang, Juan

    2012-09-01

    In this paper, we use full polarization SAR image and investigation data on site to analysis the oil rigs. Firstly, we do the pauli decomposition, then synthesize the pauli coefficient into RGB image. According different feature of oil target, the polar signature (cross and co-) are calculated. In the pauli RGB image, the oil spill is obvious and almost all the moving ship had the same" azimuth tail", and this character can be used to moving ship detection. Secondly, the scattering feature of oil rigs was estimated and classification had been done.

  9. Heavy oil: new rig has heavy oil potential

    Microsoft Academic Search

    Grisham

    1981-01-01

    If extensive use of big hole drilling is indicated for future heavy oil production, a new rig now available could be just the right tool for the job. The rig is the Hughes Tool Co.'s CSD-300, big brother to the CSD-820 which was introduced over 10 years ago. The CSD-820 drilled a 7-ft diameter shaft to a depth of 491

  10. An energy-saving oil drilling rig for recovering potential energy and decreasing motor power

    Microsoft Academic Search

    Lujun Zhang

    2011-01-01

    An energy-saving oil drilling rig is researched. A large accumulator is adopted in this rig to store the energy of the motor during the auxiliary time of lifting the drill stem and the potential energy of the drill stem when lowered. The equipped power of this rig decreases remarkably compared with the conventional drilling rig, and this rig can also

  11. Labview interface for oil drilling rigs

    Microsoft Academic Search

    S. D. Grigorescu; O. M. Ghita; M. Covrig; I. Potarniche; M. C. Gheamalinga

    2011-01-01

    This paper describe a HMI interface used for monitoring and control of drilling rig applications. The software used is an embedded solution developed with LabVIEW graphic oriented software which provides a flexible and reliable support for SCADA. The today's trend in drilling operation imply a larger use of computer added monitoring and control aiming to secure higher levels of efficiency

  12. Unique sled rig plugs oil leaking wells in surf zone

    SciTech Connect

    Zylstra, L.P. (IDS, Santa Ana, CA (United States))

    1994-01-10

    Several leaking oil wells drilled in the late 1800s in the surf zone in Southern California required a specially built rig and platform for proper abandonment. The abandonment operations were complicated because the beach is heavily used by the public and the condition of the wells was unknown. A mobile sled was designed to support a drilling rig safely in the rough surf zone. The surf sled vehicle has a modular design for efficient assembly on the beach with minimal disturbance of the environment. No structures had to be built on the beach or in the surf zone to access the wellheads, thereby reducing costs and environmental impact. The surf sled vehicle used special equipment to keep the drilling rig level and to prevent oil spills or contamination during the drilling and abandonment procedures. The wells were abandoned safely and in a timely manner, despite the challenges of working in such a sensitive area. This paper describes the equipment and procedures used.

  13. Oil rigs and offshore sport fishing in Louisiana

    Microsoft Academic Search

    R. Dugas; V. Guillory; M. Fischer

    2009-01-01

    Forty years ago, offshore sport fishing in Louisiana was almost nonexistent. Offshore oil drilling platforms are the primary cause of the present increase in sport fishing in this area. Algae and other organisms forming the first step in the food chain cluster around the subsurface structures of the rigs, attracting fish that seek food and shelter. Major game species frequenting

  14. Oil well drilling rig assembly and apparatus therefor

    Microsoft Academic Search

    1985-01-01

    An oil well drilling rig assembly having a main drilling mast which receives and installs sections of drill pipe. A pipe supply mast is pivotally mounted in a spaced relationship from the base of the main mast to provide a safe catwalk area therebetween. The supply mast is movable between a horizontal position for transferring pipe sections between an adjacent

  15. WORK RELATED DISEASES AND INJURIES ON AN OIL RIG

    Microsoft Academic Search

    DAMIR VALENTI; DRAZEN STOJANOVI; VLADIMIR MIOVI; MIHOVIL VUKELI

    2005-01-01

    The analysis of diseases and injuries in the workers on an American oil rig, operating in the Mediterranean Sea, was done in the period of one year, from 1 May 1996 to 1 May 1997. In total, 518 medical examinations of sick and injuried workers were conducted. At the first place in morbidity, there were injuries and poisonings (26.7% of

  16. Coral growing on North Sea oil rigs

    Microsoft Academic Search

    Niall Bell; Jan Smith

    1999-01-01

    This summer the coral Lophelia pertusa was found growing on oil platforms in the North Sea and on the Brent Spar oil-storage buoy during its decommissioning. The findings indicate that Lophelia has a wider distribution and a more rapid rate of growth than previously believed. The discovery also has implications for the debate over oil exploration in the Atlantic Ocean

  17. Retrofitting of harmonic power filters in onshore oil drilling rigs: Challenges & solutions

    Microsoft Academic Search

    Appa Rao Dekka; Abdul R Beig

    2012-01-01

    Bulk of the load in oil drilling rigs consists of nonlinear loads. This results in power quality problems like harmonic distortion and low power factor. The onshore oil drilling rigs operate in remote fields. This paper addresses the harmonic problems in onshore rigs that are commissioned in early period of semiconductor technology and use dc drives. Different power filtering solutions

  18. Comparison of passive and active power filters in oil drilling rigs

    Microsoft Academic Search

    Appa Rao Dekka; Abdul R. Beig; Majid Poshtan

    2011-01-01

    The Power systems in oil rigs are isolated, standalone systems. The source impedance is low. Bulk of the load is fluctuating nonlinear one and are powered directly from the generators without any series impedance. This paper investigates the harmonic problems, and presents the design of passive and active filter for oil rig power systems. The performance of the system with

  19. Challenges associated with pre-border management of biofouling on oil rigs

    Microsoft Academic Search

    Grant A. Hopkins; Barrie M. Forrest

    2010-01-01

    The potential for oil rigs to transport diverse, reef-like communities around the globe makes them high risk vectors for the inadvertent spread of non-indigenous species (NIS). This paper describes two case studies where a suite of pre-border management approaches was applied to semi-submersible drilling rigs. In the first case study, a drilling rig was defouled in-water prior to departure from

  20. Resonant test rigs for fatigue full scale testing of oil drill string connections

    Microsoft Academic Search

    L. Bertini; M. Beghini; C. Santus; A. Baryshnikov

    2008-01-01

    The paper presents two test rigs designed at the University of Pisa to perform bending fatigue tests on full scale drill pipe connections used for oil drilling. Two types of connection required different configurations of test rig. In both cases, specimen resonance was exploited in order to reduce the loads on the structure and the test duration. This allowed a

  1. Water-in-oil emulsion explosive composition

    Microsoft Academic Search

    F. Takeuchi; M. Takahashi

    1983-01-01

    A water-in-oil emulsion explosive composition which has enhanced storage stability is described. The explosive composition comprises a disperse phase formed of an aqueous oxidizer solution consisting of (1) ammonium nitrate or a mixture of ammonium nitrate and another oxidizer salt, (2) water and (3) a specifically limited weak acid salt or condensed phosphate, (4) a continuous phase consisting of fuel

  2. A New High-Speed Oil-Free Turbine Engine Rotordynamic Simulator Test Rig

    NASA Technical Reports Server (NTRS)

    Howard, Samuel A.

    2007-01-01

    A new test rig has been developed for simulating high-speed turbomachinery rotor systems using Oil-Free foil air bearing technology. Foil air bearings have been used in turbomachinery, primarily air cycle machines, for the past four decades to eliminate the need for oil lubrication. The goal of applying this bearing technology to other classes of turbomachinery has prompted the fabrication of this test rig. The facility gives bearing designers the capability to test potential bearing designs with shafts that simulate the rotating components of a target machine without the high cost of building "make-and-break" hardware. The data collected from this rig can be used to make design changes to the shaft and bearings in subsequent design iterations. This paper describes the new test rig and demonstrates its capabilities through the initial run with a simulated shaft system.

  3. Rubber for offshore oil rigs: growing market, sophisticated compounds, specialized products

    Microsoft Academic Search

    Schultz

    1977-01-01

    One of the fastest-growing markets for rubber products based on sophisticated compounds is in the offshore oil rig industry. Rubber is used for unions, couplings, valves, seals, etc. Synthetic elastomers are more versatile than natural rubber. The products in greatest use are hose and belting. Water pollution by oil spills and the like and their alleviation by rubber are discussed.

  4. Confined flow cavitation in hydraulic oil: Test rig design, pressure measurement, and PIV

    Microsoft Academic Search

    Jeffrey K Dougan

    2009-01-01

    Numerical advances in cavitation modeling require experimental measurements to validate them. For this purpose an oil cavitation test rig was designed to generate experimental data of a submerged cavitating orifice in oil. An important feature of the test section was the ability to have optical access while preserving structural integrity. ^ Experiments showed that visible inception occurred coincidently with both

  5. An Improved Harmony Search algorithm for optimal scheduling of the diesel generators in oil rig platforms

    Microsoft Academic Search

    Parikshit Yadav; Rajesh Kumar; S. K. Panda; C. S. Chang

    2011-01-01

    Harmony Search (HS) algorithm is music based meta-heuristic optimization method which is analogous with the music improvisation process where musician continue to polish the pitches in order to obtain better harmony. The paper focuses on the optimal scheduling of the generators to reduce the fuel consumption in the oil rig platform. The accurate modeling of the specific fuel consumption is

  6. Block position and speed transducer for a computer-controlled oil drilling rig

    Microsoft Academic Search

    L. B. Sheldon; J. R. Tomashek

    1978-01-01

    Apparatus for indicating the position of a traveling block along a vertical axis within a computer-controlled oil drilling rig is characterized by a magnetically responsive element for generating a pulse when a metallic member, movable with the traveling block, passes in proximity thereto. A counter is operatively associated with the magnetically responsive element to count the pulses therefrom. An electrical

  7. Power system harmonic mitigation of an offshore oil rig using passive shunt filter

    Microsoft Academic Search

    Shib Sankar Saha; Ramesh Suryavanshi

    2010-01-01

    Offshore oil rigs use large dc drives, usually fed from a.c. utility services through ac\\/dc converters, thus distorting current and voltage waveforms. Passive filters have been very effective solution for the harmonic mitigation as well as reactive VAR compensation. However, improper choice of filter components may lead to severe voltage and current stress to power system components or even sometimes

  8. An axisymmetric guided wave encoded system for flood detection of oil rig cross-beams

    Microsoft Academic Search

    Rito Mijarez; Patrick Gaydecki; Michael Burdekin

    2005-01-01

    A novel and completely autonomous guided wave system for flood detection in the hollow cross-beam members of offshore steel oil rigs is presented. Underwater non-destructive testing methods such as ultrasound have been used to inspect for the presence of seawater in these applications, often in conjunction with remote operating vehicles. Alternatively, a monolithic PZT guided wave transducer which can be

  9. Submergence Depth Control of a Free-Fall Submersible Escape Capsule for an Offshore Oil Rig

    Microsoft Academic Search

    Michael Hinchey; Raju Goteti

    1989-01-01

    This paper describes some exploratory work on a new evacuation system for an offshore oil rig. The proposed system would free-fall to the ocean surface and then sink down to a level where water motions are insignificant. So, in severe storms, it would avoid the violent air and water motions that exist near the surface. The paper concentrates on the

  10. A supply-demand analysis. Volume I. of the mobile oil drilling rig market, 1977--1987. Final report

    Microsoft Academic Search

    Durfee

    1977-01-01

    This report contains a comprehensive short-to-medium range analysis of the supply and demand factors impacting on the markets for offshore oil drilling rigs and related support vessels. Descriptions of the mobile drilling rig and support vessel markets were prepared in which relevant factors and variables which interact to form the 'market' were identified and evaluated. To provide the data base

  11. Compensation of power factor in rectifier systems utilized in oil drilling rigs

    Microsoft Academic Search

    P. P. A. Caldeira; E. H. Watanabe

    1988-01-01

    A detailed analysis of the power factor in three-phase rectifier systems utilized in oil drilling rigs is presented and the use of the thyristor controlled reactor\\/fixed capacitor as a solution to improve the power factor in these systems is proposed. The input\\/output mathematical models for the conventional full-bridge and modified converter for all firing angles and various types of load

  12. Permanently Attached Single PZT Guided Wave Encoded Sensor for Flood Detection of Oil Rig Crossbeams

    Microsoft Academic Search

    R. Mijarez; P. Gaydecki; M. Burdekin

    2005-01-01

    This paper presents preliminary results of a new guided wave system for detecting flooding in the hollow crossbeam members of offshore steel oil-rigs. A sensor, permanently attached to a sub-sea structure and powered by seawater, transmits chirp-encoded signals to a monitoring real-time digital signal processing system at surface level. Experiments performed using a jointed steel pipe structure, 10m×0.5m ×16mm, completely

  13. Shift type and season affect adaptation of the 6-sulphatoxymelatonin rhythm in offshore oil rig workers

    Microsoft Academic Search

    R. G Barnes; M. J Forbes; J Arendt

    1998-01-01

    Previously we have shown that the 6-sulphatoxymelatonin rhythm of oil rig workers on a 2-week night shift (1800–0600 h) adapts to the shift via a phase delay. We now report the findings of a study on two offshore drill crews working a 1 week day (1200–0000 h), 1 week night (0000–1200 h) swing shift. Urine samples were collected every 2–3

  14. Gender differences in work experiences and satisfactions of Norwegian oil rig workers

    Microsoft Academic Search

    Ronald J. Burke; Stig Berge Matthiesen; Stale Einarsen; Lisa Fiskenbaum; Vibeke Soiland

    2008-01-01

    Purpose – The present study sets out to compare women (N=24) and men (N=613) working on Norwegian oil rigs in the North Sea on work experiences, work satisfaction, perception of safety attitudes and safety climate, and psychological health. Design\\/methodology\\/approach – Data were collected using questionnaires from 1,022 women and men, a 59 percent response rate. Only those respondents working in

  15. Procedure-Authoring Tool Improves Safety on Oil Rigs

    NASA Technical Reports Server (NTRS)

    2014-01-01

    Dark, cold, and dangerous environments are plentiful in space and on Earth. To ensure safe operations in difficult surroundings, NASA relies heavily on procedures written well ahead of time. Houston-based TRACLabs Inc. worked with Ames Research Center through the SBIR program to create an electronic procedure authoring tool, now used by NASA and companies in the oil and gas industry.

  16. Oil rigs and offshore sport fishing in Louisiana

    Microsoft Academic Search

    R. Dugas; V. Guillory; M. Fischer

    1979-01-01

    The environmental effects of Louisiana's offshore oil platforms are discussed with regard to an increase in sport-fishing. The effects upon fish populations, species diversity, underwater habitats, and food chains from the offshore platforms are obtained from several summaries of studies undertaken between 1970-1979. (DS)

  17. 155The Great Gulf Oil Catastrophe of 2010 NASA's Terra satellite flew over the Deepwater Horizon rig's oil spill in the Gulf

    E-print Network

    of the slick from space. The oil slick resulted from an accident at the Deepwater Horizon rig in the Gulf meters? Problem 3 - The estimated quantity of oil covering this area is about 2 million gallons. If one million gallons. If one gallon of oil has a mass of 3.0 kg, what is the surface density, S, of oil

  18. Design, fabrication and testing of a bearing test rig and preliminary studies on oil mist lubrication

    E-print Network

    Shamim, Abdus

    1990-01-01

    to 10kHz frequency band width KURT1 = Kurtosis factor calculated over 0 to 3kHz frequency band wid1h LFRICT= Log(FRICT) LLOAD= Log(LOAD) LSPEED= Log(SPEED) LTEMP= Log(TEMP) LUB= Lubrication system LUB1= Oil mist lubrication system LUB2= Oil sump... of test shafts, bearings and lubrication systems, for which load and speed are varied. The dependent variables are operating temperature (TEMP), friction (FRICT) and Kurtosis factors (KURT), all measured at the test bearing. The test rig system has two...

  19. Benthic community metabolism on the continental shelf of the northern Gulf of Mexico. [Baseline study to determine effects of offshore oil rig operations

    Microsoft Academic Search

    Pamatmat

    1979-01-01

    Rates of oxygen uptake on the continental shelf indicate large temporal changes and significant differences between stations. Similar measurements at 10, 50, and 100 m distance from an operating oil rig revealed rates of benthic community metabolism that have no apparent effect from the oil rig presence and operation. Anaerobic experiments on pure cultures of Clostridium sporogenes and Bacteroides sp.

  20. Shift Work Disorder Among Oil Rig Workers in the North Sea

    PubMed Central

    Waage, Siri; Moen, Bente Elisabeth; Pallesen, Ståle; Eriksen, Hege R.; Ursin, Holger; ?kerstedt, Torbj?rn; Bjorvatn, Bj?rn

    2009-01-01

    Study Objectives: Shift work disorder (SWD) is a circadian rhythm sleep disorder caused by work hours during the usual sleep period. The main symptoms are excessive sleepiness and insomnia temporally associated with the working schedule. The aim of the present study was to examine SWD among shift workers in the North Sea. Design and Participants: A total of 103 shift workers (2 weeks on 7 nights/ 7days, 12-h shifts, 4 weeks off), mean age 39.8 years, working at an oil rig in the North Sea responded to a questionnaire about SWD. They also completed the Pittsburgh Sleep Quality Index, Bergen Insomnia Scale, Epworth Sleepiness Scale, Composite Morningness Questionnaire, Subjective Health Complaint Inventory, Demand/Control, and Instrumental Mastery Oriented Coping (based on the Utrecht Coping list). Most of these instruments were administered during the first day of the 2-week working period, thus reflecting symptoms and complaints during the 4-week non-work period. The shift workers were also compared to day workers at the oil rig. Results: Twenty-four individuals were classified as suffering from SWD, yielding a prevalence for SWD of 23.3%. During the 4-week non-work period, individuals with SWD reported significantly poorer sleep quality, as measured by the Pittsburgh Sleep Quality Index, and more subjective health complaints than individuals not having SWD. There were no differences between the 2 groups in sleepiness, insomnia, circadian preference, psychological demands, or control. Individuals with SWD reported significantly lower scores on coping. The reports of shift workers without SWD were similar to those of day workers regarding sleep, sleepiness, subjective health complaints, and coping. Conclusions: The prevalence of SWD was relatively high among these shift workers. Individuals with SWD reported poorer sleep quality and more subjective health complaints in the non-work period than shift workers not having SWD. Citation: Waage S; Moen BE; Pallesen S; Eriksen HR; Ursin H; ?kerstedt T; BjorvatnB. Shift work disorder among oil rig workers in the North Sea. SLEEP 2009;32(4):558-565. PMID:19413151

  1. Data-driven fault diagnosis of oil rig motor pumps applying automatic definition and selection of features

    Microsoft Academic Search

    E. D. Wandekokem; F. T. de Aquino Franzosi; T. W. Rauber; R. J. Batista

    2009-01-01

    We report about fault diagnosis experiments to improve the maintenance quality of motor pumps installed on oil rigs. We rely on the data-driven approach to the learning of the fault classes, i.e. supervised learning in pattern recognition. Features are extracted from the vibration signals to detect and diagnose misalignment and mechanical looseness problems. We show the results of automatic pattern

  2. Shift type and season affect adaptation of the 6-sulphatoxymelatonin rhythm in offshore oil rig workers.

    PubMed

    Barnes, R G; Forbes, M J; Arendt, J

    1998-08-21

    Previously we have shown that the 6-sulphatoxymelatonin rhythm of oil rig workers on a 2-week night shift (1800-0600 h) adapts to the shift via a phase delay. We now report the findings of a study on two offshore drill crews working a 1 week day (1200-0000 h), 1 week night (0000-1200 h) swing shift. Urine samples were collected every 2-3 h throughout the subjective days, with over-sleep collections, for the measurement of 6-sulphatoxymelatonin by radioimmunoassay. One crew (n = 11), studied in November, showed no change in their 6-sulphatoxymelatonin rhythm during night shift. The other crew (n = 7), studied in March, showed a significant phase advance of the rhythm during night shift. The data indicate that both the type of shift and the season influence the direction and degree of adaptation. PMID:9739990

  3. 46 CFR 162.050-19 - Oil content meter and bilge alarm test rig.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ...and must be in a vertical portion of the test rig piping. (c) Each test rig must have a centrifugal pump that is designed to operate at 1,000 revolutions...minute or more. (d) The mixture pipe on a test rig must have a uniform inside...

  4. 46 CFR 162.050-19 - Oil content meter and bilge alarm test rig.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ...and must be in a vertical portion of the test rig piping. (c) Each test rig must have a centrifugal pump that is designed to operate at 1,000 revolutions...minute or more. (d) The mixture pipe on a test rig must have a uniform inside...

  5. Continuous Structural Monitoring of Oil Rig SubSea Structures for Flood Member Detection Using Axisymmetric Guided Waves

    Microsoft Academic Search

    R. Mijarez; P. Gaydecki; M. Burdekin

    2006-01-01

    An axisymmetric guided wave system for detecting flooding in the hollow sub-sea structures of offshore steel oil-rigs is presented. A sensor, attached to a sub-sea structure and powered by seawater, transmits chirp-encoded signals to a monitoring real-time digital signal processing system at surface level. Experiments performed using a jointed steel pipe structure, 7 m × 0.5 m × 16 mm,

  6. Explosion Clad for Upstream Oil and Gas Equipment

    SciTech Connect

    Banker, John G. [Dynamic Materials Corp., 5405 Spine Rd., Boulder, CO 80301 (United States); Massarello, Jack [Global Metallix, Consultant to DMC, 5405 Spine Rd., Boulder, CO 80301 (United States); Pauly, Stephane [DMC., Nobelclad Business Unit, 1 Allee Alfred NOBEL, 66600 Rivesaltes (France)

    2011-01-17

    Today's upstream oil and gas facilities frequently involve the combination of high pressures, high temperatures, and highly corrosive environments, requiring equipment that is thick wall, corrosion resistant, and cost effective. When significant concentrations of CO{sub 2} and/or H{sub 2}S and/or chlorides are present, corrosion resistant alloys (CRA) can become the material of choice for separator equipment, piping, related components, and line pipe. They can provide reliable resistance to both corrosion and hydrogen embrittlement. For these applications, the more commonly used CRA's are 316L, 317L and duplex stainless steels, alloy 825 and alloy 625, dependent upon the application and the severity of the environment. Titanium is also an exceptional choice from the technical perspective, but is less commonly used except for heat exchangers. Explosion clad offers significant savings by providing a relatively thin corrosion resistant alloy on the surface metallurgically bonded to a thick, lower cost, steel substrate for the pressure containment. Developed and industrialized in the 1960's the explosion cladding technology can be used for cladding the more commonly used nickel based and stainless steel CRA's as well as titanium. It has many years of proven experience as a reliable and highly robust clad manufacturing process. The unique cold welding characteristics of explosion cladding reduce problems of alloy sensitization and dissimilar metal incompatibility. Explosion clad materials have been used extensively in both upstream and downstream oil, gas and petrochemical facilities for well over 40 years. The explosion clad equipment has demonstrated excellent resistance to corrosion, embrittlement and disbonding. Factors critical to insure reliable clad manufacture and equipment design and fabrication are addressed.

  7. Explosives: The Ammonium Nitrate in Oil Exemption Order, 1958 

    E-print Network

    Agnew, W.G.

    1958-01-01

    Under section 50 of the Explosives Act, 1875, certain explosives there named and any other explosives prescribed by Order in Council (or the purpose are exempted from certain provisions of the Act requiring that explosives ...

  8. 77 FR 39485 - Incidental Taking of Marine Mammals; Taking of Marine Mammals Incidental to the Explosive Removal...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-03

    ...Taking of Marine Mammals Incidental to the Explosive Removal of Offshore Structures in the...take marine mammals incidental to the explosive removal of offshore oil and gas structures...regulations. Reporting ExxonMobil has not used explosives for any rig structure removal...

  9. The Application Research of AC Frequency Conversion Technique in Transmission Control System of Oil Rig

    Microsoft Academic Search

    Ruifan Yang; Yong Peng

    2010-01-01

    This paper mainly introduced the basic structure and work principle of transmission agent on electric drilling rig, meanwhile the frequency control and parallel operation of motors used in the transmission agent were analyzed and designed. Using parallel operation could realize balance of power and load towards motor, using frequency control could realize fuzzy PID control. It can well accomplish two

  10. Ambient Pressure Test Rig Developed for Testing Oil-Free Bearings in Alternate Gases and Variable Pressures

    NASA Technical Reports Server (NTRS)

    Bauman, Steven W.

    1990-01-01

    The Oil-Free Turbomachinery research team at the NASA Glenn Research Center is conducting research to develop turbomachinery systems that utilize high-speed, high temperature foil (air) bearings that do not require an oil lubrication system. Such systems combine the most advanced foil bearings from industry with NASA-developed hightemperature solid-lubricant technology. New applications are being pursued, such as Oil- Free turbochargers, auxiliary power units, and turbine propulsion systems for aircraft. An Oil-Free business jet engine, for example, would be simpler, lighter, more reliable, and less costly to purchase and maintain than current engines. Another application is NASA's Prometheus mission, where gas bearings will be required for the closed-cycle turbine based power-conversion system of a nuclear power generator for deep space. To support these applications, Glenn's Oil-Free Turbomachinery research team developed the Ambient Pressure Test Rig. Using this facility, researchers can load and heat a bearing and evaluate its performance with reduced air pressure to simulate high altitude conditions. For the nuclear application, the test chamber can be purged with gases such as helium to study foil gas bearing operation in working fluids other than air.

  11. Non-technical skills: enhancing safety in operating theatres (and drilling rigs).

    PubMed

    Flin, Rhona

    2014-03-01

    On April 20th 2010, a large Transocean drilling rig called the Deepwater Horizon was operating in the Gulf of Mexico to drill the Macondo well, for the oil company BP. The job was six weeks behind schedule and $58 million over budget and had not been without difficulty: it was a high pressure well, 2.5 miles below the seabed. At 5.45 am, the Halliburton cementing engineer sent an email to say: 'We have completed the job and it went well'. At 9.43 pm, 16 hours later, there was a release of hydrocarbons into the well bore and the drilling rig experienced a catastrophic blowout as the high pressure oil and gas escaped onto the rig and into the ocean. The resulting explosions and fire killed 11 of the crew of 126, injured many more and created an enormous oil spill across the Gulf. PMID:24720059

  12. Oil in the Water, Fire in the Sky: Responding to Technological/Environmental Disasters

    ERIC Educational Resources Information Center

    Lazarus, Philip J.; Sulkowski, Michael L.

    2010-01-01

    On April 20, 2010, a massive explosion killed 11 workers on the Deepwater Horizon oil rig. Survivors of this explosion recounted terrifying near-death experiences and mourned the loss of coworkers and friends who had perished. Shock and grief spread through small coastal communities composed mostly of fishers and oil workers. However, this was…

  13. Seasickness in totally-enclosed motor-propelled survival craft: five offshore oil rig disasters.

    PubMed

    Landolt, J P; Light, I M; Greenen, M G; Monaco, C

    1992-02-01

    Five mobile offshore drilling unit disasters--Alexander L. Kielland, Ocean Ranger, Vinland, Ocean Odyssey, and Rowan Gorilla I--were studied to assess the degree to which seasickness occurs and endangers the lives of occupants of totally-enclosed motor-propelled survival craft (TEMPSC). Thousands of other peacetime marine incidents were reviewed and a literature search was conducted to assess the same seasickness problem. The one reported death in the Vinland abandonment appears to be the only one that could be associated, even remotely, with seasickness. It cannot be established whether or not seasickness contributed to the cause of death in the case of the Ocean Ranger victims, but it did occur in 75% or more of TEMPSC occupants in the other four rig disasters. It has occurred both in relatively calm waters of 1-m wave height and in severe seas of 15-m heights. Evacuees in an intact TEMPSC are able to survive many hours of severe seas; consequently, they should not be rescued until the weather and sea conditions improve. Moreover, practical survival training and good leadership is a principal cornerstone in the amelioration of seasickness. PMID:1546944

  14. Male torque strength in simulated oil rig tasks: the effects of grease-smeared gloves and handle length, diameter and orientation

    Microsoft Academic Search

    Sheik N. Imrhan; Kambiz Farahmand

    1999-01-01

    This paper examines the effects of two glove conditions and selected handle and task characteristics on tightening (clockwise) torques on cylindrical handles in simulated oil rig tasks. Ten males exerted MVC torques with the right hand on nine handles with different length–diameter combinations (3.8, 7.6, and 12.7cm in length with 3.8, 6.7, and 8.4cm in diameter) with dry and grease-smeared

  15. Cryogenic Feedthrough Test Rig

    NASA Technical Reports Server (NTRS)

    Skaff, Antony

    2009-01-01

    The cryogenic feedthrough test rig (CFTR) allows testing of instrumentation feedthroughs at liquid oxygen and liquid hydrogen temperature and pressure extremes (dangerous process fluid) without actually exposing the feedthrough to a combustible or explosive process fluid. In addition, the helium used (inert gas), with cryogenic heat exchangers, exposes the feedthrough to that environment that allows definitive leak rates of feedthrough by typical industry-standard helium mass spectrometers.

  16. CONTINUOUS MONITORING GUIDED WAVE ENCODED SENSOR FOR FLOOD DETECTION OF OIL RIGS CROSS BEAMS

    Microsoft Academic Search

    R. Mijarez; P. gaydecki; M. Burdekin

    Abstract:Structural flooded member,detection of offshore oil platforms involves the detection of seawater in their normally hollow steel crossbeam members. ,NDT methods ,such as ultrasound have been used to inspect for the presence of water in these applications, often in conjunction with remote operating vehicles. Alternatively, a guided wave sensor system is now being developed,which can be permanently,attached to a sub-sea

  17. An Approach for detecting and tracking oil slicks on satellite images

    Microsoft Academic Search

    S. Robla; E. G. Sarabia; J. R. Llata; C. Torre-Ferrero; J. P. Oria

    2010-01-01

    This paper describes the combination of several image processing techniques to achieve an approach to the detection and tracking of oil slick using satellite images taken after some accidents over the sea, as tanker accidents or oil rig explosions. This work attempts to be a contribution to such task. To get information about the shape and located of the oil

  18. Posted on Sat, Jun. 19, 2010 Oil plumes invade a dark, mysterious world at Gulf's

    E-print Network

    Belogay, Eugene A.

    of the Deepwater Horizon rig explosion. ``Unfortunately, there's really no place for this oil to go where it wonPosted on Sat, Jun. 19, 2010 Oil plumes invade a dark, mysterious world at Gulf's floor BY ANDRES surprisingly abundant in otherworldly forms of life, much of it fed by gases and oil that seep out of fissures

  19. Toxic fumes from explosives: ammonium nitrate-fuel oil mixtures

    Microsoft Academic Search

    R. F. Chaiken; E. B. Cook; T. C. Ruhe

    1974-01-01

    The Bureau of Mines has carried out experimental and theoretical studies with prilled and pulverized ammonium nitrate-fuel oil (AN-FO) mixtures containing varying amounts of fuel oil in an attempt to quantify the effects of stoichiometric composition, nonideal detonation behavior, and expansion volume on the production of CO, NO, and NOâ fumes. Experimental fume measurements were obtained in the Bureau's large

  20. Undersea plumes of oil and dissolved gas and sedimented oil along the seafloor alter the ocean system following the BP oil well blowout. (Invited)

    Microsoft Academic Search

    S. B. Joye; A. R. Diercks; A. Teske; D. L. Valentine

    2010-01-01

    The explosion and subsequent sinking of the Deepwater Horizon drilling rig resulted in a deepwater blowout that injected vast quantities of crude oil and low molecular weight hydrocarbon gases into Gulf of Mexico for almost three months. The depth of the blowout (1500m), the rate of oil and gas injection, and the duration of the event underscore the unprecedented nature

  1. 25. Photocopied 1973 from The Rig & Reel Magazine, (March, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    25. Photocopied 1973 from The Rig & Reel Magazine, (March, 1923) p. 1. TYPICAL ENDLESS-WIRE RIG IN VOLCANO. - West Oil Company Endless Wire Pumping Station, U.S. Route 50 (Volcano vicinity), Petroleum, Ritchie County, WV

  2. Top Engineers to Investigate Cause of Oil by Lauren Schenkman on July 13, 2010 6:02 PM |

    E-print Network

    Southern California, University of

    Top Engineers to Investigate Cause of Oil Spill by Lauren Schenkman on July 13, 2010 6:02 PM | Investigations into the gulf oil disaster are multiplying. The National Academy of Engineering (NAE and industry engineers to take a technical look into the causes of the Deepwater Horizon rig explosion and oil

  3. Hybrid Bearing Prognostic Test Rig

    NASA Technical Reports Server (NTRS)

    Dempsey, Paula J.; Certo, Joseph M.; Handschuh, Robert F.; Dimofte, Florin

    2005-01-01

    The NASA Glenn Research Center has developed a new Hybrid Bearing Prognostic Test Rig to evaluate the performance of sensors and algorithms in predicting failures of rolling element bearings for aeronautics and space applications. The failure progression of both conventional and hybrid (ceramic rolling elements, metal races) bearings can be tested from fault initiation to total failure. The effects of different lubricants on bearing life can also be evaluated. Test conditions monitored and recorded during the test include load, oil temperature, vibration, and oil debris. New diagnostic research instrumentation will also be evaluated for hybrid bearing damage detection. This paper summarizes the capabilities of this new test rig.

  4. RIG, rochester\\

    Microsoft Academic Search

    E. Ball; Jerome A. Feldman; James R. Low; Richard F. Rashid; Paul Rovner

    1976-01-01

    The RIG system provides convenient access to a wide range of computing facilities. The system includes five large mini-computers in a very fast internal network, disk and tape storage, a printer\\/plotter, and a number of display terminals. These are connected to larger campus machines (IBM 360\\/65 and DEC KL10) and to the ARPANET. The operating system and other software support

  5. Fractionation of oil palm frond hemicelluloses by water or alkaline impregnation and steam explosion.

    PubMed

    Sabiha-Hanim, Saleh; Mohd Noor, Mohd Azemi; Rosma, Ahmad

    2015-01-22

    Steam explosion of oil palm frond has been carried out under different temperatures between 180 and 210°C for 4 min (severity of 2.96-3.84) after impregnation of the frond chips with water or KOH solution. The effects of impregnation and steam explosion conditions of oil palm fronds on the water soluble fraction and insoluble fraction were investigated. The maximum yield of hemicelluloses in water soluble fractions recovered was 23.49% and 25.33% for water and KOH impregnation, treated with steam explosion at temperature of 210°C (severity of 3.84) with a fractionation efficiency of 77.30% and 83.32%, respectively. Under this condition, the water insoluble fractions contained celluloses at 60.83% and 64.80% for water and KOH impregnation, respectively. The steam explosion temperature of 210°C for 4 min (logR(o) 3.84) was found to be the best condition in the extraction of hemicelluloses from OPF for both types of impregnation. PMID:25439929

  6. Explosive engineering problems from fragmentation tests in oil shale at the Anvil Points Mine, Colorado

    SciTech Connect

    Dick, R.D.; Fourney, W.L.; Young, C.

    1985-01-01

    During 1981 and 1982, an extensive oil shale fragmentation research program was conducted at the Anvil Points Mine near Rifle, Colorado. The primary goals were to investigate factors involved for adequate fragmentation of oil shale and to evaluate the feasibility of using the modified in situ retort (MIS) method for recovery of oil from oil shale. The field test program included single-deck, single-borehole experiments to obtain basic fragmentation data; multiple-deck, multiple-borehole experiments to evaluate some practical aspects for developing an in situ retort; and the development of a variety of instrumentation technique to diagnose the blast event. This paper discusses some explosive engineering problems encountered, such as electric cap performance in complex blasting patterns, explosive and stem performance in a variety of configurations from the simple to the complex, and the difficulties experienced when reversing the direction of throw of the oil shale in a subscale retort configuration. These problems need solutions before an adequate MIS retort can be created in a single-blast event and even before an experimental mini-retort can be formed. 6 references, 7 figures, 3 tables.

  7. Evaluation and comparison of occupational noise exposure among workers on offshore and onshore oil well drilling rigs

    E-print Network

    Suarez Garcia, Humberto

    1984-01-01

    DATA 55 SAS 095 RIGPLACE LOCATION OPERA OBAMEAN 1 2 3 4 5 8 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 46 49 50 51 52 53... for eleven locations in each rig; these locations were: 1) Blowout preventers (BOP), 2) driller's control (DC), 3) desandez, desgaser (DD), 4) engine room/motors (ERM) 5) generators (GEN), 6) mud storeroom (MSR), 7) mud tank area (MTA), 8) mud test...

  8. Britoil's Beatrice gets unique workover rig

    SciTech Connect

    Salter, M.J.; Hogan, K.G.

    1983-11-15

    On the expectation of continuous downhole production problems in its Beatrice field in the UK sector of the North Sea, Britoil selected a unique workover rig, with some drilling capability, for permanent installation on its B platform. Experience on Beatrice A platform provided inputs for the rig's design, which was accomplished by a multidisciplined group of engineers and draftsmen, including an experienced toolpusher. The rig features a kelly racking system, in the absence of space for a rathole, and a spooler unit to handle downhole pump electrical cables, small-bore chemical injection lines, and downhole instrument cables (Fig. 1). The rig is fully instrumented to ensure safe, pollution-free operation. Britoil PLC is the operator of the Beatrice field in Block 11at30 in the Inner Moray Firth off Scotland's East Coast, on behalf of a consortium including Deminex UK Oil and Gas Ltd., Hunt Overseas Oil Inc., Kerr-McGee Oil (UK) Ltd., and Lasmo North Sea Ltd.

  9. Supply-demand analysis. Executive summary of the mobile oil drilling rig and support craft markets. Final report

    Microsoft Academic Search

    Durfee

    1977-01-01

    The purpose of this study was to assist the Maritime Administration in determining the economic soundness of vessel construction projects submitted pursuant to the Federal Ship Financing Guarantee program. In addition, there is a detailed discussion of worldwide offshore oil and gas reserves and undiscovered recoverable resources, recent production trends, and exploration\\/development policies of principal current and potential oil producing

  10. Use of explicit finite element analysis to evaluate explosion effects reduces shutdown time on oil and gas production platform

    Microsoft Academic Search

    Pieter van der Weijde

    1997-01-01

    The use of explicit finite element analysis techniques dramatically reduced the shutdown requirements for an offshore oil and gas production platform in the North Sea. The blast wall between the process and compression areas and the rest of the platform required strengthening to withstand the forces from possible explosion scenarios. Strengthening the wall using conventional structural steelwork would have required

  11. Oil

    NSDL National Science Digital Library

    Brieske, Joel A.

    2002-01-01

    The first site, offered by the Institute of Petroleum, is called Fossils into Fuel (1). It describes how oil and gas are formed and processed, as well as offering short quizzes on each section. The second site (2) is maintained by the Department of Energy. Visitors can learn about the history of oil use, how itâ??s found and extracted, and more. The next site, called Picture an Oil Well (3), is a one-page illustration and description of the workings of an oil well, offered by the California Department of Conservation. The fourth site, hosted by the Minerals Management Service, is called Stacey Visits an Offshore Oil Rig (4). It tells the story of a girl taking a field trip on an offshore oil rig and what she finds when sheâ??s there. The Especially for Kids Web site (5) is presented by NOAA and explores facts about the effects of oil spills. Kids can do experiments, get help writing a report, find further information on the provided additional links, and more. From the Environmental Protection Agency, the sixth site is called Oil Spill Program (6), and it also delves into the topic of oil spills. It provides information about the EPA's program for preventing, preparing for, and responding to oil spills that occur in and around inland waters of the United States. The next site, offered by How Stuff Works.com, is called How Oil Refining Works (7). Descriptions of crude oil, fractional distillation, chemical processing, and more is presented in a succinct but informative way. The last site is from The Center for Subsurface Modeling (CSM) of the Texas Institute for Computational and Applied Mathematics and is called CSMâ??s Picture Gallery (8). After clicking the Gallery link, visitors will find animations and images that represent CSMâ??s work such as oil spill simulations, discontinuous galerkin, the tyranny of scale, contaminant remediation, etc.

  12. 26. Photocopied 1973 from The Rig & Reel Magazine, (March, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    26. Photocopied 1973 from The Rig & Reel Magazine, (March, 1923) p. 1. TYPICAL WELL HOOK-UP. - West Oil Company Endless Wire Pumping Station, U.S. Route 50 (Volcano vicinity), Petroleum, Ritchie County, WV

  13. 28. Photocopied 1973 from The Rig & Reel Magazine, (March, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    28. Photocopied 1973 from The Rig & Reel Magazine, (March, 1923) p. 2. INTERIOR OF CENTRAL POWERHOUSE AT VOLCANO - NOW DISMANTLED. - West Oil Company Endless Wire Pumping Station, U.S. Route 50 (Volcano vicinity), Petroleum, Ritchie County, WV

  14. 27. Photocopied 1973 from The Rig & Reel Magazine, (March, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    27. Photocopied 1973 from The Rig & Reel Magazine, (March, 1923) p. 5. EARLIER ENDLESS-WIRE TRANSMISSION NOW IN RUINS. - West Oil Company Endless Wire Pumping Station, U.S. Route 50 (Volcano vicinity), Petroleum, Ritchie County, WV

  15. 30 CFR 250.405 - What are the safety requirements for diesel engines used on a drilling rig?

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...the safety requirements for diesel engines used on a drilling rig? 250.405...DEPARTMENT OF THE INTERIOR OFFSHORE OIL AND GAS AND SULPHUR OPERATIONS IN...the safety requirements for diesel engines used on a drilling rig? You...

  16. 30 CFR 250.405 - What are the safety requirements for diesel engines used on a drilling rig?

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...the safety requirements for diesel engines used on a drilling rig? 250.405...DEPARTMENT OF THE INTERIOR OFFSHORE OIL AND GAS AND SULPHUR OPERATIONS IN...the safety requirements for diesel engines used on a drilling rig? You...

  17. 30 CFR 250.405 - What are the safety requirements for diesel engines used on a drilling rig?

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...the safety requirements for diesel engines used on a drilling rig? 250.405...DEPARTMENT OF THE INTERIOR OFFSHORE OIL AND GAS AND SULPHUR OPERATIONS IN...the safety requirements for diesel engines used on a drilling rig? You...

  18. 30 CFR 250.405 - What are the safety requirements for diesel engines used on a drilling rig?

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...the safety requirements for diesel engines used on a drilling rig? 250.405...DEPARTMENT OF THE INTERIOR OFFSHORE OIL AND GAS AND SULPHUR OPERATIONS IN...the safety requirements for diesel engines used on a drilling rig? You...

  19. ent Harmonics in Thruster AC Dr Rig Platforms

    Microsoft Academic Search

    Parikshit Yadav; C. W. Cheah

    2009-01-01

    The paper investigates the ef harmonics in oil-rig's thruster drives, whi variable frequency AC induction motor driv system in the oil rig consists of two 12 pu transformers having a relative phase shift of converter and an induction motor. The exhibits clean energy characteristics accord 519.1992 with I-THD of 2.48% and harmoni 24n±1 at the busbar when both transform loaded.Due

  20. School Kids and Oil Rigs

    Microsoft Academic Search

    Kelly Frailing; Jr. Dee Wood Harper

    2010-01-01

    Shortly after Hurricane Katrina's landfall in August 2005 and the reports of rampant looting of businesses in the city, we became curious about the extent of Katrina looting as compared to that after other major storms that hit New Orleans in 1947 and in 1965. Using burglary as a proxy variable for looting, we discovered that the burglary rates in

  1. Seismo-acoustic analysis of the Buncefield oil depot explosion in the UK, 2005 December 11

    Microsoft Academic Search

    L. Ottemöller; L. G. Evers

    2008-01-01

    A massive vapour cloud explosion occurred at the Buncefield fuel depot near Hemel Hempstead, UK, in the morning of 2005 December 11. The explosion was the result of an overflow from one of the storage tanks with the release of over 300 tons of petrol and generating a vapour cloud that spread over an area of 80000 m2, before being

  2. A Multivariate Analysis on the Influence of Indigenous Crude Oil Components on the Quality of Produced Water. Comparison Between Bench and Rig Scale Experiments

    Microsoft Academic Search

    Anne Silset; Geir Rune Flåten; Herman Helness; Esa Melin; Gisle Øye; Johan Sjöblom

    2010-01-01

    A matrix of 30 crude oils have been analyzed to investigate if there is any correlation between the physiochemical properties of the crude oils and the quality of the produced water. As an approach to study produced water quality, oil. and brine water (3.5 wt%) have been mixed together, and transmission profiles from the separation process have been investigated by means

  3. Bacteria Provide Cleanup of Oil Spills, Wastewater

    NASA Technical Reports Server (NTRS)

    2010-01-01

    Through Small Business Innovation Research (SBIR) contracts with Marshall Space Flight Center, Micro-Bac International Inc., of Round Rock, Texas, developed a phototrophic cell for water purification in space. Inside the cell: millions of photosynthetic bacteria. Micro-Bac proceeded to commercialize the bacterial formulation it developed for the SBIR project. The formulation is now used for the remediation of wastewater systems and waste from livestock farms and food manufacturers. Strains of the SBIR-derived bacteria also feature in microbial solutions that treat environmentally damaging oil spills, such as that resulting from the catastrophic 2010 Deepwater Horizon oil rig explosion in the Gulf of Mexico.

  4. New drilling rigs

    SciTech Connect

    Tubb, M.

    1981-02-01

    Friede and Goldman Ltd. of New Orleans, Louisiana has a successful drilling rig, the L-780 jack-up series. The triangular-shaped drilling vessel measures 180 x 176 ft. and is equipped with three 352 ft legs including spud cans. It is designed to work in up to 250 ft waters and drill to 20,000 ft depths. The unit is scheduled to begin initial drilling operations in the Gulf of Mexico for Arco. Design features are included for the unit. Davie Shipbuilding Ltd. has entered the Mexican offshore market with the signing of a $40,000,000 Canadian contract for a jack-up to work in 300 ft water depths. Baker Marine Corporation has contracted with the People's Republic of China for construction of two self-elevating jack-ups. The units will be built for Magnum Marine, headquartered in Houston. Details for the two rigs are given. Santa Fe International Corporation has ordered a new jack-up rig to work initially in the Gulf of Suez. The newly ordered unit, Rig 136, will be the company's fourth offshore drilling rig now being built in the Far East. Temple Drilling Company has signed a construction contract with Bethlehem Steel for a jack-up to work in 200 ft water depths. Penrod Drilling Company has ordered two additional cantilever type jack-ups for Hitachi Shipbuilding and Engineering Co. Ltd. of Japan. Two semi-submersibles, capable of working in up to 2000 ft water depths, have been ordered by two Liberian companies. Details for these rigs are included. (DP)

  5. Seismo-acoustic analysis of the Buncefield oil depot explosion in the UK, 2005 December 11

    NASA Astrophysics Data System (ADS)

    Ottemöller, L.; Evers, L. G.

    2008-03-01

    A massive vapour cloud explosion occurred at the Buncefield fuel depot near Hemel Hempstead, UK, in the morning of 2005 December 11. The explosion was the result of an overflow from one of the storage tanks with the release of over 300 tons of petrol and generating a vapour cloud that spread over an area of 80000 m2, before being ignited. Considerable damage was caused in the vicinity of the explosion and a total of 43 people were injured. The explosion was detected by seismograph stations in the UK and the Netherlands and by infrasound arrays in the Netherlands. We analysed the seismic recordings to determine the origin time of 06:01:31.45 +/-0.5 s (UTC) from P-wave arrival times. Uncertainties in determination of origin time from acoustic arrival times alone were less than 10 s. Amplitudes of P-, Lg and primary acoustic waves were measured to derive decay relationships as function of distance. From the seismic amplitudes we estimated a yield of 2-10 tons equivalent to a buried explosion. Most seismic stations recorded primary and secondary acoustic waves. We used atmospheric ray tracing to identify the various travel paths, which depend on temperature and wind speed as function of altitude, leading to directional variation. Refracted waves were observed from the troposphere, stratosphere and thermosphere with a good match between observed and calculated traveltimes. The various wave types were also identified through array processing, which provides backazimuth and slowness, of recordings from an infrasound array in the Netherlands. The amplitude of stratospheric refracted acoustic waves recorded by the array microbarometers was used to estimate a yield of 21.6 (+/-5) tons TNT equivalent. We have demonstrated through joint seismo-acoustic analysis of the explosion that both the seismic velocity model and the atmospheric model are sufficient to explain the observed traveltimes.

  6. Design of a bicycle rig

    E-print Network

    Racz, Rastislav

    2010-01-01

    A design of a bicycle (bike) rig was conducted. This bike rig is designed to be used for aerodynamics measurement testing of bicycles, cyclists and cycling related items in a wind tunnel. This paper discusses the design ...

  7. New drilling rigs

    Microsoft Academic Search

    Tubb

    1981-01-01

    Friede and Goldman Ltd. of New Orleans, Louisiana has a successful drilling rig, the L-780 jack-up series. The triangular-shaped drilling vessel measures 180 x 176 ft. and is equipped with three 352 ft legs including spud cans. It is designed to work in up to 250 ft waters and drill to 20,000 ft depths. The unit is scheduled to begin

  8. Explosive fragmentation of oil shale: Results from Colony and Anvil Points Mines, Colorado

    SciTech Connect

    Dick, R.D.; Fourney, W.L. [Maryland Univ., College Park, MD (United States). Dept. of Mechanical Engineering] [Maryland Univ., College Park, MD (United States). Dept. of Mechanical Engineering; Young, C. III [Sunburst Recovery, Inc., Steamboat Springs, CO (United States)] [Sunburst Recovery, Inc., Steamboat Springs, CO (United States)

    1992-12-31

    From 1978 through 1983, numerous oil shale fragmentation tests were conducted at the Colony and Anvil Points Mines, Colorado. These experiments were part of an investigation to determine factors required for the adequate fragmentation of oil shale and to evaluate the feasibility of using the vertical modified in situ retort (VMIS) method for recovery of kerogen from oil shale. The objective of this research was to support the design of a large volume (10{sup 4} m{sup 3}) rubble bed for in situ processing. In addition, this rubble bed was to be formed in a large single-blast event which included decked charges, time delays, and multiple boreholes. Results are described.

  9. Fuzzy fault tree assessment based on improved AHP for fire and explosion accidents for steel oil storage tanks.

    PubMed

    Shi, Lei; Shuai, Jian; Xu, Kui

    2014-08-15

    Fire and explosion accidents of steel oil storage tanks (FEASOST) occur occasionally during the petroleum and chemical industry production and storage processes and often have devastating impact on lives, the environment and property. To contribute towards the development of a quantitative approach for assessing the occurrence probability of FEASOST, a fault tree of FEASOST is constructed that identifies various potential causes. Traditional fault tree analysis (FTA) can achieve quantitative evaluation if the failure data of all of the basic events (BEs) are available, which is almost impossible due to the lack of detailed data, as well as other uncertainties. This paper makes an attempt to perform FTA of FEASOST by a hybrid application between an expert elicitation based improved analysis hierarchy process (AHP) and fuzzy set theory, and the occurrence possibility of FEASOST is estimated for an oil depot in China. A comparison between statistical data and calculated data using fuzzy fault tree analysis (FFTA) based on traditional and improved AHP is also made. Sensitivity and importance analysis has been performed to identify the most crucial BEs leading to FEASOST that will provide insights into how managers should focus effective mitigation. PMID:25010458

  10. Use of CORRTEX to measure explosive performance and stem behavior in oil shale fragmentation tests

    SciTech Connect

    Schmitt, G.G.; Dick, R.D.

    1985-01-01

    Continuous Reflectometry for Radius vs Time Experiments (CORRTEX) was used to monitor several conditions of blasts such as the detonation velocity of the explosive column, the functioning of different types of initiators and initiation schemes, and the behavior of the stemming column confining the explosive. The CORRTEX data were also used to deduce the occurrence of dead-pressing of ANFO slurry. Measurements of propagation speeds of shock waves in the stem column with various cables allowed some conclusions concerning bridging, stem failure, and stress levels in the stem. CORRTEX used time-domain reflectometry to interrogate the two-way transit time (TWTT) of a coaxial cable. As the shock front advanced the cable was shorted or destroyed and the resultant TWTT was shorter. Interpretation of these changes as a function of time allowed the position of the shock front to be inferred also as a function of time. This paper describes in some detail the CORRTEX technique and how it was applied to in-situ measurements. Detonation velocities are provided for pelletized ANFO and TNT as well as various ANFO slurries. Observations are made on stem performance as well as shock propagation velocities in several stem materials. Cable characteristics and methods of cable selection are discussed as are techniques for instrumentation of complex blasts to provide initiation time and burn velocity. 3 references, 7 figures.

  11. 30 CFR 250.405 - What are the safety requirements for diesel engines used on a drilling rig?

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...safety requirements for diesel engines used on a drilling rig? 250...OF THE INTERIOR OFFSHORE OIL AND GAS AND SULPHUR OPERATIONS IN THE OUTER CONTINENTAL SHELF Oil and Gas Drilling Operations...safety requirements for diesel engines used on a drilling rig?...

  12. Science Nation: Hidden Oil and Gas Plumes in the Gulf

    NSDL National Science Digital Library

    Days after the oil rig explosion in the Gulf of Mexico, University of Georgia oceanographer Samantha Joye got the wheels in motion to submit a proposal for a "Grant for Rapid Response Research" from the National Science Foundation (NSF). Her goal was to investigate underwater oil and gas plumes, and determine how this disaster was impacting deepwater organisms. Within a week, NSF approved the grant. Joye and her team from the University of Georgia, along with researchers from several other universities, spent May 24 through June 6, 2010 aboard the University of Miami research vessel, Walton Smith, departing from Gulfport, Miss.

  13. Pressure rig for repetitive casting

    NASA Technical Reports Server (NTRS)

    Vasquez, Peter (inventor); Hutto, William R. (inventor); Philips, Albert R. (inventor)

    1989-01-01

    The invention is a pressure rig for repetitive casting of metal. The pressure rig performs like a piston for feeding molten metal into a mold. Pressure is applied to an expandable rubber diaphragm which expands like a balloon to force the metal into the mold. A ceramic cavity which holds molten metal is lined with blanket-type insulating material, necessitating only a relining for subsequent use and eliminating the lengthy cavity preparation inherent in previous rigs. In addition, the expandable rubber diaphragm is protected by the insulating material thereby decreasing its vulnerability to heat damage. As a result of the improved design the life expectancy of the pressure rig contemplated by the present invention is more than doubled. Moreover, the improved heat protection has allowed the casting of brass and other alloys with higher melting temperatures than possible in the conventional pressure rigs.

  14. Rig Diagnostic Tools

    NASA Technical Reports Server (NTRS)

    Soileau, Kerry M.; Baicy, John W.

    2008-01-01

    Rig Diagnostic Tools is a suite of applications designed to allow an operator to monitor the status and health of complex networked systems using a unique interface between Java applications and UNIX scripts. The suite consists of Java applications, C scripts, Vx- Works applications, UNIX utilities, C programs, and configuration files. The UNIX scripts retrieve data from the system and write them to a certain set of files. The Java side monitors these files and presents the data in user-friendly formats for operators to use in making troubleshooting decisions. This design allows for rapid prototyping and expansion of higher-level displays without affecting the basic data-gathering applications. The suite is designed to be extensible, with the ability to add new system components in building block fashion without affecting existing system applications. This allows for monitoring of complex systems for which unplanned shutdown time comes at a prohibitive cost.

  15. Tracking the Deepwater Horizon Oil Spill: A Modeling Perspective

    NASA Astrophysics Data System (ADS)

    Liu, Yonggang; Weisberg, Robert H.; Hu, Chuanmin; Zheng, Lianyuan

    2011-02-01

    The Deepwater Horizon oil spill was caused by a drilling rig explosion on 20 April 2010 that killed 11 people. It was the largest oil spill in U.S. history and presented an unprecedented threat to Gulf of Mexico marine resources. Although oil gushing to the surface diminished after the well was capped, on 15 July 2010, much remains to be known about the oil and the dispersants beneath the surface, including their trajectories and effects on marine life. A system for tracking the oil, both at the surface and at depth, was needed for mitigation efforts and ship survey guidance. Such a system was implemented immediately after the spill by marshaling numerical model and satellite remote sensing resources available from existing coastal ocean observing activities [e.g., Weisberg et al., 2009]. Analyzing this system's various strengths and weaknesses can help further improve similar systems designed for other emergency responses.

  16. Hoisting and Rigging (Formerly Hoisting and Rigging Manual)

    SciTech Connect

    NONE

    1995-06-01

    This standard is intended as a reference document to be used by supervisors, line managers, safety personnel, equipment operators, and any other personnel responsible for safety of hoisting and rigging operations at DOE sites. It quotes or paraphrases the US OSHA and ANSI requirements. It also encompasses, under one cover,hoisting and rigging requirements, codes, standards, and regulations, eliminating the need to maintain extensive (and often incomplete) libraries of hoisting and rigging standards throughout DOE. The standard occasionally goes beyond the minimum general industry standards established by OSHA and ANSI, and also delineates the more stringent requirements necessary to accomplish the complex, diversified, critical, and often hazardous hoisting and rigging work found with the DOE complex.

  17. Advanced Subsonic Combustion Rig

    NASA Technical Reports Server (NTRS)

    Lee, Chi-Ming

    1998-01-01

    Researchers from the NASA Lewis Research Center have obtained the first combustion/emissions data under extreme future engine operating conditions. In Lewis' new world-class 60-atm combustor research facility--the Advanced Subsonic Combustion Rig (ASCR)--a flametube was used to conduct combustion experiments in environments as extreme as 900 psia and 3400 F. The greatest challenge for combustion researchers is the uncertainty of the effects of pressure on the formation of nitrogen oxides (NOx). Consequently, U.S. engine manufacturers are using these data to guide their future combustor designs. The flametube's metal housing has an inside diameter of 12 in. and a length of 10.5 in. The flametube can be used with a variety of different flow paths. Each flow path is lined with a high-temperature, castable refractory material (alumina) to minimize heat loss. Upstream of the flametube is the injector section, which has an inside diameter of 13 in. and a length of 0.5-in. It was designed to provide for quick changeovers. This flametube is being used to provide all U.S. engine manufacturers early assessments of advanced combustion concepts at full power conditions prior to engine production. To date, seven concepts from engine manufacturers have been evaluated and improved. This collaborated development can potentially give U.S. engine manufacturers the competitive advantage of being first in the market with advanced low-emission technologies.

  18. Combination offshore drilling rig

    SciTech Connect

    Lorenz, D.B.; Laid, J.S. II

    1986-07-29

    An offshore drilling rig is described for use in drilling into a formation below a body of water comprising a barge hull having a drilling slot extending inwardly from the peripheral boundary of the barge hull, means for supporting the barge hull in a position above the water, a cantilever structure mounted on the barge hull and movable horizontally with respect to such barge hull, the cantilever structure being so located relative to the drilling slot as to be movable horizontally into a position in vertical alignment with the drilling slot, a derrick and drilling machinery mounted to the cantilever structure and movable into a position above the drilling slot whereby well drilling operations may be conducted through the drilling slot, the cantilever structure also being movable horizontally to a position which locates the derrick and the drilling machinery outboard of the peripheral boundary of the barge hull, whereby a drilling operations may be conducted outside of the peripheral boundary of the barge hull, means mounted on the barge hull for moving the cantilever structure horizontally to different positions relative to the barge hull.

  19. Geotechnical hazards associated with leg penetration of jack-up rigs

    SciTech Connect

    Kee, R.

    1984-02-01

    In recent years there has been a large increase in offshore oil and gas exploration activities. A large proportion of the work is being performed with jack-up drilling rigs. Jack-up rigs basically are of 2 types, depending on their foundation: Mat-supported or Individual footings (spud cans). Mat supported rigs have a large foundation bearing area and therefore impose relatively low bearing pressures on the seabed resulting in limited penetration. Mats are usually A-shaped and are suitable for use when the seabed comprises very soft clay soils. However, mat supported rigs require that the seabed is fairly level and their stability is sensitive to factors such as subsoil variability, cyclic and eccentric load effects, lateral sliding resistance and seabed instability. Rigs supported on individual footings are more numerous and much more widely used in South East Asia and this paper presents aspects of geotechnical hazards that may be encountered when their legs penetrate into the seabed.

  20. Pressure Rig for Repetitive Casting

    NASA Technical Reports Server (NTRS)

    Vasquez, P.; Hutto, W. R.

    1986-01-01

    Equipment life increased by improved insulation. New design cuts time of preparation for casting from several days to about 1 hour. Savings due to elimination of lengthy heating and drying operations associated with preparation of ceramic mold. Quality of casting improved because moisture in cavity eliminated by use of insulating material, and more uniform pressure applied to process. Commercial blanket insulator protects components from heat, increasing life of pressure rig and enabling repeated use. Improved heat protection allows casting of brass and other alloys with higher melting temperatures in pressure rig.

  1. Group Based Rigging of Realistically Feathered Wings 

    E-print Network

    Howard, Heather Vernette

    2012-02-14

    ......... 22 II.8 Development of CG Birds: Scientific Visualization .......... 23 II.9 Development of CG Birds: Videos and Tutorials................. 24 III METHODOLOGY... wing rig as well as offering a tutorial of how the rig was created. Much like previous methods, such as those used on Gwaihir in Lord of the Rings, her rig uses two main rows of feathers: remiges and coverts. The author bases the rig on a real bird?s...

  2. Hoisting and rigging manual: Uncontrolled document

    SciTech Connect

    NONE

    1991-05-01

    This document is a draft copy of a Hoisting and Rigging Manual for the Department of Energy. The manual is divided into ten chapters. The chapter titles follow: terminology and definitions; operator training and qualification; overhead and gantry cranes; mobile cranes; forklift trucks; hoists; hooks; wire rope, slings, and rigging accessories; construction hoisting and rigging equipment requirements; references.

  3. Oil Spills and Futures Prices of Crude Oil and Gasoline: An Examination of the Effect of Precautionary Demand

    Microsoft Academic Search

    EadsSamantha

    2011-01-01

    Crude oil is one of the world’s most important goods. It is used everywhere in the world daily and has many uses, the most common use being gasoline. In the short run, the supply of oil is inelastic; oil rigs can only produce so many barrels of oil per day, and companies will not be able to construct new rigs

  4. Testing the Generalization Efficiency of Oil Slick Classification Algorithm Using Multiple SAR Data for Deepwater Horizon Oil Spill

    NASA Astrophysics Data System (ADS)

    Ozkan, C.; Osmanoglu, B.; Sunar, F.; Staples, G.; Kalkan, K.; Bal?k Sanl?, F.

    2012-07-01

    Marine oil spills due to releases of crude oil from tankers, offshore platforms, drilling rigs and wells, etc. are seriously affecting the fragile marine and coastal ecosystem and cause political and environmental concern. A catastrophic explosion and subsequent fire in the Deepwater Horizon oil platform caused the platform to burn and sink, and oil leaked continuously between April 20th and July 15th of 2010, releasing about 780,000 m3 of crude oil into the Gulf of Mexico. Today, space-borne SAR sensors are extensively used for the detection of oil spills in the marine environment, as they are independent from sun light, not affected by cloudiness, and more cost-effective than air patrolling due to covering large areas. In this study, generalization extent of an object based classification algorithm was tested for oil spill detection using multiple SAR imagery data. Among many geometrical, physical and textural features, some more distinctive ones were selected to distinguish oil and look alike objects from each others. The tested classifier was constructed from a Multilayer Perception Artificial Neural Network trained by ABC, LM and BP optimization algorithms. The training data to train the classifier were constituted from SAR data consisting of oil spill originated from Lebanon in 2007. The classifier was then applied to the Deepwater Horizon oil spill data in the Gulf of Mexico on RADARSAT-2 and ALOS PALSAR images to demonstrate the generalization efficiency of oil slick classification algorithm.

  5. PNNL Hoisting and Rigging Manual

    SciTech Connect

    Haynie, Todd O.; Fullmer, Michael W.

    2008-12-29

    This manual describes the safe and cost effective operation, inspection, maintenance, and repair requirements for cranes, hoists, fork trucks, slings, rigging hardware, and hoisting equipment. It is intended to be a user's guide to requirements, codes, laws, regulations, standards, and practices that apply to Pacific Northwest National Laboratory (PNNL) and its subcontractors.

  6. Explosives tester

    SciTech Connect

    Haas, Jeffrey S. (San Ramon, CA); Howard, Douglas E. (Livermore, CA); Eckels, Joel D. (Livermore, CA); Nunes, Peter J. (Danville, CA)

    2011-01-11

    An explosives tester that can be used anywhere as a screening tool by non-technical personnel to determine whether a surface contains explosives. First and second explosives detecting reagent holders and dispensers are provided. A heater is provided for receiving the first and second explosives detecting reagent holders and dispensers.

  7. Environmental disaster or just a drop in the bucket: Texas scientists on the real effects of the Deewater Horizon oil spill

    E-print Network

    Lee, Leslie

    2011-01-01

    Winter 2011 tx H2O 3 or just a drop in thebucket?Texas scientists on the real e#31;ects of the Deepwater Horizon oil spill 4 tx H2O Winter 2011 Environmental Disaster Continued What if gasoline pumped into cars, seafood eaten at restaurants... but forgo#27;en as the wreckage of the Deepwater Horizon MC#31;#30;#31; drilling platform sank into its waters. A crude awakening Like any large oil spill, this one took its toll in many ways. Eleven BP employees on the rig died in the explosion...

  8. Environmental disaster or just a drop in the bucket?: Texas scientists on the real effects of the Deepwater Horizon oil spill

    E-print Network

    Lee, Leslie

    2011-01-01

    Winter 2011 tx H2O 3 or just a drop in thebucket?Texas scientists on the real e#31;ects of the Deepwater Horizon oil spill 4 tx H2O Winter 2011 Environmental Disaster Continued What if gasoline pumped into cars, seafood eaten at restaurants... but forgo#27;en as the wreckage of the Deepwater Horizon MC#31;#30;#31; drilling platform sank into its waters. A crude awakening Like any large oil spill, this one took its toll in many ways. Eleven BP employees on the rig died in the explosion...

  9. Booster for relatively insensitive explosives

    Microsoft Academic Search

    M. A. Cook; H. E. Farnam; S. D. Malstrom; W. H. Peterson

    1962-01-01

    Insensitive explosives, containing a high percentage of ammonium nitrate (NHD4UNOD3U) and containing nonexplosive organic sensitizers, have found wide application as blasting explosives. Prilled NHD4UNOD3U containing 94% NHD4UNOD3U and 6% fuel oil, and aqueous slurries of TNT-NHD4UNOD3U are examples of such insensitive explosives. The compositions are not detonable by blasting caps and prior art methods for detonating them include the use

  10. Experimental investigation of the physical properties of medium and heavy oils, their vaporization and use in explosion engines. Part III

    NASA Technical Reports Server (NTRS)

    Heinlein, Fritz

    1926-01-01

    The test equipment for studying the vaporization of heavy and medium oils is described as well as some of the experimental properties explored such as vaporization speed and diffusion coefficient. The experiemtal arrangement is also discussed.

  11. Solar stirling engine rig tests

    Microsoft Academic Search

    I. A. Tursunbaev; E. P. Orda; A. I. Lezhebokov; A. P. Korobkov; A. I. Semyannikov

    2010-01-01

    A description of a prototype four-cylinder Stirli ng engine construction with the heat receiver of the concentrated solar\\u000a radiant flux and with a swashplate drive is given. The rig tests have been carried out in an effort to optimize the individual\\u000a engine units. They have been conducted in the cooling system mode and in the mode of an engine working

  12. Oil Spill Model

    NSDL National Science Digital Library

    Living Oceans Society

    This interactive flash model from the Living Ocean Society allows users to the explore hypothetical oil spills in the Hecate Straight off the northwest coast of Canada. The several scenarios include oil rig spills, spills from oil tankers, as well as accidents involving other vessels. Users can see how the seasonal winds and tides affect which areas are affected by a particular spill.

  13. Explosive welding of metal plates

    Microsoft Academic Search

    S. A. A. Akbari-Mousavi; L. M. Barrett; S. T. S. Al-Hassani

    2008-01-01

    This paper describes a study of explosive welding of metal plates. The properties of a locally prepared mix of 77\\/23 ammonium nitrate and fuel oil (ANFO) explosive and the dynamics of the plates are investigated and the results from welding tests presented. The strength of the clad plates is measured and ultrasonic inspection performed to identify and locate defects. The

  14. Assessment of Eagle Ford Shale Oil and Gas Resources 

    E-print Network

    Gong, Xinglai

    2013-07-30

    The Eagle Ford play in south Texas is currently one of the hottest plays in the United States. In 2012, the average Eagle Ford rig count (269 rigs) was 15% of the total US rig count. Assessment of the oil and gas resources and their associated...

  15. Modular designs highlight several new rigs

    SciTech Connect

    Rappold, K.

    1995-12-04

    A new platform drilling rig for offshore Trinidad and two new land rigs for the former Soviet Union feature the latest in drilling and construction technology and modular components for quick rig up/rig down. The Sundowner 801 was mock-up tested in Galveston, TX, a few weeks ago in preparation for its load-out to the Dolphin field offshore Trinidad. Two other new units, UNOC 500 DE series land rigs, were recently constructed and mock-up tested in Ekaterinburg, Russia, for upcoming exploratory work for RAO Gazprom, a large natural gas producer in Russia. These rigs are unique in that they were constructed from new components made both in the US and in Russia. The paper describes all three units.

  16. Experimental investigation of the physical properties of medium and heavy oils, their vaporization and use in explosion engines. Part IV

    NASA Technical Reports Server (NTRS)

    Heinlein, Fritz

    1926-01-01

    This report presents a theoretical treatment of the vaporization process of medium and heavy oils. The results of this investigation, which were mostly obtained from the lighter components of the heavy fuels, require a 10- or 16-fold vaporization in comparison with gasoline. We must attain a still finer degree of atomization, in order to include the heavier components.

  17. La Belle: rigging in the days of the spritsail topmast, a reconstruction of a seventeenth-century ship's rig 

    E-print Network

    Corder, Catharine Leigh Inbody

    2008-10-10

    La Belle's rigging assemblage has provided a rare and valuable source of knowledge of 17th-century rigging in general and in particular, French and small-ship rigging characteristics. With over 400 individual items ...

  18. La Belle: Rigging in the days of the spritsail topmast, a reconstruction of a seventeenth-century ship's rig 

    E-print Network

    Corder, Catharine Leigh Inbody

    2009-05-15

    La Belle’s rigging assemblage has provided a rare and valuable source of knowledge of 17th-century rigging in general and in particular, French and small-ship rigging characteristics. With over 400 individual items including ...

  19. Column test-rig facility for column scanning studies

    NASA Astrophysics Data System (ADS)

    Zain, Rasif M.; Roslan, Y.

    2009-12-01

    Distillation columns are considered as one of the most critical components in oil and gas plants. The plant performance depends on the ability of these columns to function as intended. Defective columns may lead to serious consequences to the plant operation, and hence the quality of product. In order to perform any inspection techniques to distillation column for NDT practitioner, the best facility was designed when the adjustable defeats of distillation column test rig has been developed. The paper discussed the development and the function of this facility.

  20. Column test-rig facility for column scanning studies

    NASA Astrophysics Data System (ADS)

    Zain, Rasif M.; Roslan, Y.

    2010-03-01

    Distillation columns are considered as one of the most critical components in oil and gas plants. The plant performance depends on the ability of these columns to function as intended. Defective columns may lead to serious consequences to the plant operation, and hence the quality of product. In order to perform any inspection techniques to distillation column for NDT practitioner, the best facility was designed when the adjustable defeats of distillation column test rig has been developed. The paper discussed the development and the function of this facility.

  1. Unique rig fulfills unusual mobility requirements

    SciTech Connect

    Not Available

    1989-10-01

    This article describes a unique rig designed by SEDCO FOREX operating in the Paris basin of France. Built to drill clusters of wells from a single pad, Rig 47 significantly reduces the time needed to move from well to well on a pad and from location to location.

  2. CORE VARIETIES, EXTENSIVITY, AND RIG GEOMETRY

    Microsoft Academic Search

    F. WILLIAM LAWVERE

    2008-01-01

    The role of the Frobenius operations in analyzing finite spaces, as well as the extended algebraic geometry over rigs, depend partly on varieties (Birkhoan inclusions of algebraic categories) that have coreflections as well as reflections and whose dual category of ane spaces is extensive. Even within the category of those rigs where 1+1 = 1, not only distributive lattices but

  3. Explosively produced fracture of oil shale. Progress report, July-September 1981. [Field experiments; computer models; retort stability

    SciTech Connect

    none,

    1982-04-01

    The Los Alamos National Laboratory is conducting rock fragmentation research in oil shale to develop the blasting technologies and designs required to create a rubble bed for a modified in situ retort. This report outlines our first field experiments at the Anvil Points Mine in Colorado. These experiments are part of a research program, sponsored by the Laboratory through the Department of Energy and by a Consortium of oil companies. Also included are some typical numerical calculations made in support of proposed field experiments. Two papers detail our progress in computer modeling and theory. The first presents a method for eliminating hourglassing in two-dimensional finite-difference calculations of rock fracture without altering the physical results. The second discusses the significant effect of buoyancy on tracer gas flow through the retort. A paper on retort stability details a computer application of the Schmidt graphical method for calculating fine-scale temperature gradients in a retort wall. The final paper, which describes our approach to field experiments, presents the instrumentation and diagnostic techniques used in rock fragmentation experiments at Anvil Points Mine.

  4. Stress-life relation of the rolling-contact fatigue spin rig

    NASA Technical Reports Server (NTRS)

    Butler, Robert H; Carter, Thomas L

    1957-01-01

    The rolling-contact fatigue spin rig was used to test groups of SAE 52100 9.16-inch-diameter balls lubricated with a mineral oil at 600,000-, 675,000-, and 750,000-psi maximum Hertz stress. Cylinders of AISI M-1 vacuum and commercial melts and MV-1 (AISI M-50) were used as race specimens. Stress-life exponents produced agree closely with values accepted in industry. The type of failure obtained in the spin rig was similar to the subsurface fatigue spells found in bearings.

  5. Long run relationship between oil prices and aggregate oil investment: Empirical Evidence

    Microsoft Academic Search

    Sergio Guerra

    Using the aggregate number of oil rigs as a proxy of oil investment, I evaluate the bidirectional relationship between oil prices and oil investment in OPEC and Non-OPEC countries. We take advantage of Bayesian estimation techniques and innovation accounting to incorporate the long run dynamics of the oil market without imposing strong restrictions on its structural form. Our results suggest

  6. DOUBLE-RIG SHRIMP TRAWLING IN THE GULF OF MEXICO

    E-print Network

    DOUBLE-RIG SHRIMP TRAWLING IN THE GULF OF MEXICO , , FISB AND WILDLIFE SERVICE Vaited Sial, Commissioner Bureau of Commercial Fisheries, Donald L. McKernan, Director DOUBLE-RIG SHRIMP TRAWLING . . . . . · . . . · Figure 1 2 3 4 lUUSTRATIONS Details of the rigging arrangements req ired for double-rig shrimp trawl ing

  7. 78 FR 20423 - Oil and Gas and Sulphur Operations in the Outer Continental Shelf-Revisions to Safety and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-05

    ...the Deepwater Horizon explosion and oil spill, 75 FR 63610. The regulations required...Deepwater Horizon explosion and resulting oil spill highlighted potential faults in the...the Deepwater Horizon explosion and oil spill is that the risk of another...

  8. Jack-up rig for marine drilling

    SciTech Connect

    Mueller, S. R.

    1981-05-26

    This invention relates to a mobile drilling platform of the jack -up type equipped with a special system which allows the said drilling platform to work as a drilling derrick and alternatively as a hoisting crane rig for marine service.

  9. RIG-I in RNA virus recognition.

    PubMed

    Kell, Alison M; Gale, Michael

    2015-05-01

    Antiviral immunity is initiated upon host recognition of viral products via non-self molecular patterns known as pathogen-associated molecular patterns (PAMPs). Such recognition initiates signaling cascades that induce intracellular innate immune defenses and an inflammatory response that facilitates development of the acquired immune response. The retinoic acid-inducible gene I (RIG-I) and the RIG-I-like receptor (RLR) protein family are key cytoplasmic pathogen recognition receptors that are implicated in the recognition of viruses across genera and virus families, including functioning as major sensors of RNA viruses, and promoting recognition of some DNA viruses. RIG-I, the charter member of the RLR family, is activated upon binding to PAMP RNA. Activated RIG-I signals by interacting with the adapter protein MAVS leading to a signaling cascade that activates the transcription factors IRF3 and NF-?B. These actions induce the expression of antiviral gene products and the production of type I and III interferons that lead to an antiviral state in the infected cell and surrounding tissue. RIG-I signaling is essential for the control of infection by many RNA viruses. Recently, RIG-I crosstalk with other pathogen recognition receptors and components of the inflammasome has been described. In this review, we discuss the current knowledge regarding the role of RIG-I in recognition of a variety of virus families and its role in programming the adaptive immune response through cross-talk with parallel arms of the innate immune system, including how RIG-I can be leveraged for antiviral therapy. PMID:25749629

  10. Tracking and Monitoring Oil Slicks Using remote Sensing

    NASA Astrophysics Data System (ADS)

    Klemas, V. V.

    2011-12-01

    Tracking and Monitoring Oil Slicks Using Remote Sensing Victor Klemas, Ph.D. , College of Earth, Ocean and Environment, University of Delaware, Newark, DE 19716 Abstract Oil spills can harm marine life in the ocean, estuaries and wetlands. To limit the damage by a spill and facilitate cleanup efforts, emergency managers need information on spill location, size and extent, direction and speed of oil movement, wind, current, and wave information for predicting oil drift and dispersion. The main operational data requirements are fast turn-around time and frequent imaging to monitor the dynamics of the spill. Radar and multispectral remote sensors on satellites and aircraft meet most of these requirements by tracking the spilled oil at various resolutions, over wide areas and at frequent intervals. They also provide key inputs to drift prediction models and facilitate targeting of skimming and booming efforts. Satellite data are frequently supplemented by information provided by aircraft, ships and remotely controlled underwater robots. The Sea Princess tanker grounding off the coast of Wales and the explosion on the Deepwater Horizon rig in the Gulf of Mexico provide two representative, yet different, scenarios for evaluating the effectiveness of remote sensors during oil spill emergencies. Session NH17: Remote Sensing of Natural Hazards Session Chair: Ramesh P. Singh Sponsor: Natural Hazards (NH)

  11. An Orientation to Explosive Safety.

    ERIC Educational Resources Information Center

    Harris, Betty W.

    1987-01-01

    Provides an overview of various types of explosives. Classifies and describes explosives as initiating or primary explosives, low explosives, and high (secondary explosives). Discusses detonating devices, domestic explosive systems, the sensitivity of explosives, explosive reactions, and emergency responses. (TW)

  12. Thermally stable emulsion explosive composition

    SciTech Connect

    Sudweeks, W.B.; Lawrence, L.D.

    1982-03-30

    A thermally stable, cap-sensitive, water-in-oil emulsion explosive composition is described which has a discontinuous aqueous oxidizer salt solution phase containing calcium nitrate, a continuous oil or water-immiscible liquid or organic phase, an emulsifier, and a density reducing agent. The salt solution contains calcium nitrate in an amount of at least 20% by weight based on the total composition. 9 claims.

  13. Drill Rig Safety Topics of the Presentation

    E-print Network

    · Check oil level daily -engine oil & coolant -compressor air/oil tank -hydraulic tank -pump oil (water;#12;#12;#12;Just needs a little paint!! #12;#12;Inspect & Install Heat Blankets and Exhaust Covers #12;Falling

  14. World's largest-capacity heli-rig debuts

    SciTech Connect

    Abraham, K.S.

    1991-05-01

    This paper reports on the world's largest-capacity heli-rig debuts. Industry's leading manufacturer of helicopter-transportable rigs has improved on previous models by building a flyable rig with the deepest drilling capability to date. Designed for jungles and mountain tops, it stresses safety and environmental features.

  15. A scaled roller test rig for high-speed vehicles

    Microsoft Academic Search

    Benedetto Allotta; Luca Pugi; Monica Malvezzi; Fabio Bartolini; Francesco Cangioli

    2010-01-01

    Scaled roller rigs are quite widespread among railway research centres, and several examples are described in the literature. Due to their low costs and ease of use compared with full-scale counterparts, these types of rigs are used for a wide range of studies concerning dynamical stability, comfort, mechatronic subsystem and wear. Furthermore, scaled roller rigs can be a powerful education

  16. NUMERICAL TEST RIG FOR TURBINE GAS METER

    Microsoft Academic Search

    Toralf Hoch; Ernst von Lavante

    Generally, the determination of the performance and quality of volumetric flow meters i s being carried out using so called error curves. They are the result of experiments performed on test rigs for different design variations and operating conditions. In order to au gment this development process for flow meter to reduce costs in terms of money and time, computational

  17. Nuclear explosions

    NASA Astrophysics Data System (ADS)

    Broyles, A. A.

    1982-07-01

    A summary of the physics of a nuclear bomb explosion and its effects on human beings is presented at the level of a sophomore general physics course without calculus. It is designed to supplement a standard text for such a course and problems are included.

  18. Explosive complexes

    DOEpatents

    Huynh, My Hang V. (Los Alamos, NM)

    2011-08-16

    Lead-free primary explosives of the formula [M.sup.II(A).sub.R(B.sup.X).sub.S](C.sup.Y).sub.T, where A is 1,5-diaminotetrazole, and syntheses thereof are described. Substantially stoichiometric equivalents of the reactants lead to high yields of pure compositions thereby avoiding dangerous purification steps.

  19. Explosive Microsphere Particle Standards for Trace Explosive Detection Instruments

    NASA Astrophysics Data System (ADS)

    Staymates, Matthew; Fletcher, Robert; Gillen, Greg

    2007-11-01

    Increases in Homeland Security measures have led to a substantial deployment of trace explosive detection systems within the United States and US embassies around the world. One such system is a walk-through portal which aerodynamically screens people for trace explosive particles. Another system is a benchtop instrument that can detect explosives from swipes used to collect explosive particles from surfaces of luggage and clothing. The National Institute of Standards and Technology is involved in a chemical metrology program to support the operational deployment and effective utilization of trace explosive and narcotic detection devices and is working to develop a measurement infrastructure to optimize, calibrate and standardize these instruments. Well characterized test materials are essential for validating the performance of these systems. Particle size, chemical composition, and detector response are particularly important. Here, we describe one method for producing monodisperse polymer microspheres encapsulating trace explosives, simulants, and narcotics using a sonicated co-flow Berkland nozzle. The nozzle creates uniform droplets that undergo an oil/water emulsion process and cure to form hardened microspheres containing the desired analyte. Issues such as particle size, particle uniformity and levels of analyte composition will be discussed.

  20. Location of potential interest for fracturing oil shale with nuclear explosives for in situ retorting, Piceance Creek Basin, Rio Blanco County, Colorado

    USGS Publications Warehouse

    Ege, J.R.

    1967-01-01

    Analysis of oil assays, structure sections, and isopach maps of the Parachute Creek Member of the Green River Formation indicates that numerous locations in the western part of the Piceance Creek basin could be selected with an oil shale section at least 500 feet thick that contains not less than 20 gallons per ton of shale oil, and has at least 800 feet of overburden.

  1. Characteristics of black carbon aerosol from a surface oil burn during the Deepwater Horizon oil spill

    NASA Astrophysics Data System (ADS)

    Perring, A. E.; Schwarz, J. P.; Spackman, J. R.; Bahreini, R.; de Gouw, J. A.; Gao, R. S.; Holloway, J. S.; Lack, D. A.; Langridge, J. M.; Peischl, J.; Middlebrook, A. M.; Ryerson, T. B.; Warneke, C.; Watts, L. A.; Fahey, D. W.

    2011-09-01

    Black carbon (BC) aerosol mass mixing ratio and microphysical properties were measured from the NOAA P-3 aircraft during active surface oil burning subsequent to the Deepwater Horizon oil rig explosion in April 2010. Approximately 4% of the combusted material was released into the atmosphere as BC. The total amount of BC introduced to the atmosphere of the Gulf of Mexico via surface burning of oil during the 9-week spill is estimated to be (1.35 ± 0.72) × 106 kg. The median mass diameter of BC particles observed in the burning plume was much larger than that of the non-plume Gulf background air and previously sampled from a variety of sources. The plume BC particles were internally mixed with very little non-refractory material, a feature typical of fresh emissions from fairly efficient fossil-fuel burning sources and atypical of BC in biomass burning plumes. BC dominated the total accumulation-mode aerosol in both mass and number. The BC mass-specific extinction cross-section was 10.2 ± 4.1 and 7.1 ± 2.8 m2/g at 405 and 532 nm respectively. These results help constrain the properties of BC emissions associated with DWH and other large spills.

  2. Characteristics of Black Carbon Aerosol from a Surface Oil Burn During the Deepwater Horizon Oil Spill

    NASA Astrophysics Data System (ADS)

    Perring, A. E.; Schwarz, J. P.; Spackman, J. R.; Bahreini, R.; De Gouw, J. A.; Gao, R.; Holloway, J. S.; Lack, D. A.; Langridge, J. M.; Peischl, J.; Middlebrook, A. M.; Ryerson, T. B.; Warneke, C.; Watts, L. A.; Fahey, D. W.

    2011-12-01

    Black carbon (BC) aerosol mass mixing ratio and microphysical properties were measured from the NOAA P-3 aircraft during active surface oil burning subsequent to the Deepwater Horizon oil rig explosion in April 2010. Approximately 4% of the combusted material was released into the atmosphere as BC. The total amount of BC introduced to the atmosphere of the Gulf of Mexico via surface burning of oil during the 9-week spill is estimated to be (1.35 ± 0.72) x106 kg. The median mass diameter of BC particles observed in the burning plume was much larger than that of the non-plume Gulf background air. The plume BC particles were internally mixed with very little non-refractory material, a feature typical of fresh emissions from fairly efficient fossil-fuel burning sources and atypical of BC in biomass burning plumes. BC dominated the total accumulation-mode aerosol in both mass and number. The BC mass-specific extinction cross-section is determined at 405 and 532 nm.

  3. Demonstration Explosion

    NASA Astrophysics Data System (ADS)

    Lee, Charles "Skip"

    1998-05-01

    Last week I did a demonstration that produced a serious explosion. After putting methanol in a big glass carboy and rotating the carboy to build up some methanol vapor, I lit the mouth of the carboy. What normally happens is a "jet engine" effect out of the mouth of the carboy. In my case, the carboy exploded. Two polycarbonate blast shields were shattered and glass was blown as far as 15 feet away. I was not seriously cut and bruised, but had I not been using the two blast shields, I would have been severely injured. At this time, I am not sure what caused the explosion. I have done this demonstration around one hundred times with no problem using the exact same amount of methanol and technique. I think it is important to get the word out that this demonstration may be more dangerous than previously thought. I would also welcome any hypotheses concerning what caused the carboy to explode.

  4. Explosive Joining

    NASA Technical Reports Server (NTRS)

    1989-01-01

    Laurence J. Bement of Langley Research Center invented a technique to permit metal joining operations under hazardous or inaccessible conditions. The process, which provides a joint with double the strength of the parent metal, involves the use of very small quantities of ribbon explosive to create hermetically sealed joints. When the metal plates are slammed together by the explosion's force, joining is accomplished. The collision causes a skin deep melt and ejection of oxide films on the surfaces, allowing a linkup of electrons that produce superstrong, uniform joints. The technique can be used to join metals that otherwise would not join and offers advantages over mechanical fasteners and adhesives. With Langley assistance, Demex International Ltd. refined and commercialized the technology. Applications include plugging leaking tubes in feedwater heaters. Demex produces the small plugs, associated sleeves and detonators. The technology allows faster plugging, reduces downtime, cuts plugging costs and increases reliability.

  5. A New Foil Air Bearing Test Rig for Use to 700 C and 70,000 rpm

    NASA Technical Reports Server (NTRS)

    DellaCorte, Chris

    1997-01-01

    A new test rig has been developed for evaluating foil air bearings at high temperatures and speeds. These bearings are self acting hydrodynamic air bearings which have been successfully applied to a variety of turbomachinery operating up to 650 C. This unique test rig is capable of measuring bearing torque during start-up, shut-down and high speed operation. Load capacity and general performance characteristics, such as durability, can be measured at temperatures to 700 C and speeds to 70,000 rpm. This paper describes the new test rig and demonstrates its capabilities through the preliminary characterization of several bearings. The bearing performance data from this facility can be used to develop advanced turbomachinery incorporating high temperature oil-free air bearing technology.

  6. NASA DEVELOP Students Rev Up Response to Gulf Oil Spill

    NASA Technical Reports Server (NTRS)

    Jones, Jason B.; Childs, Lauren M.

    2010-01-01

    After the April 20th explosion aboard the Deepwater Horizon drilling rig in the Gulf of Mexico, the world witnessed one of the worst oil spill catastrophes in global history. In an effort to mitigate the disaster, the U.S. government moved quickly to establish a unified command for responding to the spill. Some of the command's most immediate needs were to track the movement of the surface oil slick, establish a baseline measurement of pre-oil coastal ecosystem conditions, and assess potential air quality and water hazards related to the spill. To help address these needs and assist the Federal response to the disaster, NASA deployed several of its airborne and satellite research sensors to collect an unprecedented amount of remotely-sensed data over the Gulf of Mexico region. Although some of these data were shared with the public via the media, much of the NASA data on the disaster was not well known to the Gulf Coast community. The need existed to inform the general public about these datasets and help improve understanding about how NASA's science research was contributing to oil spill response and recovery. With its extensive experience conducting community-oriented remote sensing projects and close ties to organizations around Gulf of Mexico, the NASA DEVELOP National Program stood in a unique position to meet this need.

  7. Oscillating-flow regenerator test rig

    NASA Technical Reports Server (NTRS)

    Wood, J. G.; Gedeon, D. R.

    1994-01-01

    This report summarizes work performed in setting up and performing tests on a regenerator test rig. An earlier status report presented test results, together with heat transfer correlations, for four regenerator samples (two woven screen samples and two felt metal samples). Lessons learned from this testing led to improvements to the experimental setup, mainly instrumentation as well as to the test procedure. Given funding and time constraints for this project it was decided to complete as much testing as possible while the rig was set up and operational, and to forego final data reduction and analysis until later. Additional testing was performed on several of the previously tested samples as well an on five newly fabricated samples. The following report is a summary of the work performed at OU, with many of the final test results included in raw data form.

  8. Jet Exit Rig Six Component Force Balance

    NASA Technical Reports Server (NTRS)

    Castner, Raymond; Wolter, John; Woike, Mark; Booth, Dennis

    2012-01-01

    A new six axis air balance was delivered to the NASA Glenn Research Center. This air balance has an axial force capability of 800 pounds, primary airflow of 10 pounds per second, and a secondary airflow of 3 pounds per second. Its primary use was for the NASA Glenn Jet Exit Rig, a wind tunnel model used to test both low-speed, and high-speed nozzle concepts in a wind tunnel. This report outlines the installation of the balance in the Jet Exit Rig, and the results from an ASME calibration nozzle with an exit area of 8 square-inches. The results demonstrated the stability of the force balance for axial measurements and the repeatability of measurements better than 0.20 percent.

  9. Explosive simulants for testing explosive detection systems

    DOEpatents

    Kury, John W. (Danville, CA); Anderson, Brian L. (Lodi, CA)

    1999-09-28

    Explosives simulants that include non-explosive components are disclosed that facilitate testing of equipment designed to remotely detect explosives. The simulants are non-explosive, non-hazardous materials that can be safely handled without any significant precautions. The simulants imitate real explosives in terms of mass density, effective atomic number, x-ray transmission properties, and physical form, including moldable plastics and emulsions/gels.

  10. Development of a test rig for a helium twin-screw compressor

    SciTech Connect

    Wang, B. M.; Hu, Z. J. [Key Laboratory of Cryogenics, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190 (China); Zhang, P. [School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074 (China); Li, Q. [State Key Laboratory of Technologies in Space Cryogenic Propellant(Institute of Physics and Chemistry, Chinese Academy of Sciences), Beijing 100190 (China)

    2014-01-29

    A large helium cryogenic system is being developed for use in great science projects, such as the International Thermonuclear Experimental Reactor (ITER), Large Helical Device (LHD), and the Experimental Advanced Superconducting Tokamak (EAST). In this cryogenic system, a twin-screw compressor is a key component. Therefore, it is necessary to obtain the compressor performance. To obtain the performance characteristics, a test rig for the compressor has been built. All the important performance parameters, including adiabatic efficiency, volumetric efficiency, oil injection characteristic, and noise characteristic can be acquired with the rig when sensors are installed in the test system. With the test performance, the helium twin-screw compressor can be evaluated. Using these results, the design of the compressor can be improved.

  11. Development of a test rig for a helium twin-screw compressor

    NASA Astrophysics Data System (ADS)

    Wang, B. M.; Hu, Z. J.; Zhang, P.; Li, Q.

    2014-01-01

    A large helium cryogenic system is being developed for use in great science projects, such as the International Thermonuclear Experimental Reactor (ITER), Large Helical Device (LHD), and the Experimental Advanced Superconducting Tokamak (EAST). In this cryogenic system, a twin-screw compressor is a key component. Therefore, it is necessary to obtain the compressor performance. To obtain the performance characteristics, a test rig for the compressor has been built. All the important performance parameters, including adiabatic efficiency, volumetric efficiency, oil injection characteristic, and noise characteristic can be acquired with the rig when sensors are installed in the test system. With the test performance, the helium twin-screw compressor can be evaluated. Using these results, the design of the compressor can be improved.

  12. Group Based Rigging of Realistically Feathered Wings

    E-print Network

    Howard, Heather Vernette

    2012-02-14

    in this thesis project, helping to increase the realism on a CG bird through the implementation of realistic feathers and feather coats in addition to the realistic wing structure and feather movement resulting from this project. 22 An intuitive approach... motion rig is designed to provide animators with intuitive control over wing behavior intended to result in efficient re-creation of realistic wing action including flapping and folding. WingCreator was tested by two riggers and one animator to gain...

  13. Computers make rig life extension an option

    SciTech Connect

    NONE

    1996-10-01

    The worldwide semisubmersible drilling rig fleet is approaching retirement. But replacement is not an attractive option even though dayrates are reaching record highs. In 1991, Schlumberger Sedco Forex managers decided that an alternative might exist if regulators and insurers could be convinced to extend rig life expectancy through restoration. Sedco Forex chose their No. 704 semisubmersible, an 18-year North Sea veteran, to test their process. The first step was to determine what required restoration, meaning fatigue life analysis of each weld on the huge vessel. If inspected, the task would be unacceptably time-consuming and of questionable accuracy. Instead a suite of computer programs modeled the stress seen by each weld, statistically estimated the sea states seen by the rig throughout its North Sea service and calibrated a beam-element model on which to run their computer simulations. The elastic stiffness of the structure and detailed stress analysis of each weld was performed with ANSYS, a commercially available finite-element analysis program. The use of computer codes to evaluate service life extension is described.

  14. Analysis of Explosives

    Microsoft Academic Search

    Jehuda Yinon; John C. Hoffsommer

    1977-01-01

    The analysis of explosives is of major importance in several analytical fields:1. Forensic identification of explosives is a major problem in the criminalistic investigation of a bombing which involves connecting the type of explosive used with the suspect. The detection and identification of explosive residues in debris material constitutes a highly difficult task. The thermal instability of most explosives, along

  15. Universe Explosions

    E-print Network

    Ram Brustein; Maximilian Schmidt-Sommerfeld

    2012-09-24

    A scenario for a quantum big crunch to big bang transition is proposed. We first clarify the similarities between this transition and the final stages of black hole evaporation. The black hole and the universe are thought of as quantum states. The importance of an external observer for understanding the big crunch to big bang transition is emphasized. Then, relying on the similarities between the black hole and the universe, we propose that the transition should be described as an explosion that connects the contracting phase to the expanding one. The explosion occurs when entropy bounds are saturated, or equivalently when the states cease to be semiclassically (meta)stable. We discuss our scenario in three examples: collapsing dust, a brane universe falling into a bulk black hole in anti-de Sitter space, and a contracting universe filled with a negative cosmological constant and a small amount of matter. We briefly discuss the late time observables that may carry some information about the state of the universe before the transition.

  16. Innovative technology for a cost-effective land rig

    SciTech Connect

    Mehra, S.; Bryce, T.

    1996-05-01

    Sedco Forex has recently completed a new land drilling rig, currently deployed in Gabon, that integrates well construction activities with multiskilling to create cost savings across the board in drilling operations. Historically, operators have produced a comprehensive tender package specifying strictly the type and size of individual rig components and the number of personnel required to drill. In this case, the drilling contractor provides a fit-for-purpose rig, consistent with field location, well profile, operator`s priorities, and local constraints.

  17. Explosive stimulation of a geothermal well: GEOFRAC

    SciTech Connect

    Mumma, D.M. (Physics International Co., San Leandro, CA (United States))

    1982-07-01

    This paper describes the first known explosive stimulation successfully conducted in a geothermal well. Two tests were performed in a 2690-meter-(8826-ft.) deep Union Oil well at the Geysers field in Northern California in December 1981. The heat-resistant process, called GEOFRAC, uses a new unique, explosive HITEX 2, which is a nondetonable solid at room temperature. Upon melting at a temperature of 177[degrees]C (350[degrees]F), the HITEX 2 liquid becomes an explosive that can be safely heated to temperatures greater than 260[degrees]C (500[degrees]F). These unique properties of the explosive were exploited in the GEOFRAC process through the cooperative efforts of Physics International Company (PI), Rocket Research Company (RRC), Union oil Company (UO), and the university of California Los Alamos National Laboratories (LANL).

  18. The role of the rigged Hilbert space in quantum mechanics

    NASA Astrophysics Data System (ADS)

    de la Madrid, Rafael

    2005-04-01

    There is compelling evidence that, when a continuous spectrum is present, the natural mathematical setting for quantum mechanics is the rigged Hilbert space rather than just the Hilbert space. In particular, Dirac's bra-ket formalism is fully implemented by the rigged Hilbert space rather than just by the Hilbert space. In this paper, we provide a pedestrian introduction to the role the rigged Hilbert space plays in quantum mechanics, by way of a simple, exactly solvable example. The procedure will be constructive and based on a recent publication. We also provide a thorough discussion on the physical significance of the rigged Hilbert space.

  19. La Belle: Rigging in the days of the spritsail topmast, a reconstruction of a seventeenth-century ship's rig

    E-print Network

    Corder, Catharine Leigh Inbody

    2009-05-15

    gratitude for all I have learned from each of you and your contributions to understanding La Belle?s rigging. I am particularly indebted to Olof Pipping, who devoted considerable time in reviewing La Belle?s artifacts as well as my analysis... been published by Carl Olof Cederlund. 21 Other publications about the ship do not directly address rigging. 22 The rigging assemblage consists mainly of basic blocks and deadeyes with only two exceptions, but has a variety of cleats similar...

  20. La Belle: rigging in the days of the spritsail topmast, a reconstruction of a seventeenth-century ship's rig

    E-print Network

    Corder, Catharine Leigh Inbody

    2008-10-10

    gratitude for all I have learned from each of you and your contributions to understanding La Belle’s rigging. I am particularly indebted to Olof Pipping, who devoted considerable time in reviewing La Belle’s artifacts as well as my analysis... been published by Carl Olof Cederlund. 21 Other publications about the ship do not directly address rigging. 22 The rigging assemblage consists mainly of basic blocks and deadeyes with only two exceptions, but has a variety of cleats similar...

  1. Chaotic Explosions

    E-print Network

    Eduardo G. Altmann; Jefferson S. E. Portela; Tamás Tél

    2015-01-22

    We investigate chaotic dynamical systems for which the intensity of trajectories might grow unlimited in time. We show that (i) the intensity grows exponentially in time and is distributed spatially according to a fractal measure with an information dimension smaller than that of the phase space,(ii) such exploding cases can be described by an operator formalism similar to the one applied to chaotic systems with absorption (decaying intensities), but (iii) the invariant quantities characterizing explosion and absorption are typically not directly related to each other, e.g., the decay rate and fractal dimensions of absorbing maps typically differ from the ones computed in the corresponding inverse (exploding) maps. We illustrate our general results through numerical simulation in the cardioid billiard mimicking a lasing optical cavity, and through analytical calculations in the baker map.

  2. Rotary torque and rpm indicator for oil well drilling rigs

    Microsoft Academic Search

    Chien

    1981-01-01

    Monitoring the torque applied by the rotary table to the drill string and the rpm of the drill string is provided. An intermediate adapter is positioned between the drill kelly and the rotary table. A strain gauge is attached to the intermediate adapter to measure torsional deformation and provide an indication of rotary torque. Transmission of torque data is accomplished

  3. Design considerations for offshore oil rig cathodic protection

    Microsoft Academic Search

    D. J. Tighe-Ford; J. N. McGrath

    1993-01-01

    The rational design of cathodic protection (CP) configurations for jackets is addressed in the context of large, open, complex, multi-component structures. The approach is illustrated by an impressed current CP (ICCP) design study, employing physical scale modeling for the selection of the numbers and locations of zones, anodes, and reference electrodes for a relatively simple unpainted jacket under static conditions.

  4. 75 FR 71455 - Agency Information Collection Activities; Submission for OMB Review; Comment Request; Rigging...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-11-23

    ...Comment Request; Rigging Equipment for Material Handling...titled, ``Rigging Equipment for Material Handling...to the Office of Management and Budget (OMB...OSHA), Office of Management and Budget, Room 10235...provisions of the rigging equipment for material...

  5. Design and construction of rigs for studying surface condensation and creating anodized metal oxide surfaces

    E-print Network

    Sun, Wei-Yang

    2011-01-01

    This thesis details the design and construction of a rig for studying surface condensation and a rig for creating anodized metal oxides (AMOs). The condensation rig characterizes condensation for different surfaces; this ...

  6. The Application of Roller Rigs to Railway Vehicle Dynamics

    Microsoft Academic Search

    Alfred Jaschinski; Hugues Chollet; Simon Iwnicki; Alan Wickens; JURGEN VON WURZEN

    1999-01-01

    SUMMARY Roller rigs have been built world-wide to research into the dynamics of railway vehicles and they have particularly been applied to the development of high-speed trains. This survey takes into consideration both full scale as well as small scale model roller rigs. Besides performance, most important experimental work and the emphasis of application, the scaling strategies of model test

  7. 46 CFR 162.050-17 - Separator test rig.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ...Figure 162.050-17(a). FIGURE 162.050-17(a)—SEPARATOR TEST RIG ER16JA09.005 (b) Each mixture pump on a test rig must— (1) Be a centrifugal pump capable of operating at 1,000 revolutions per minute or more;...

  8. Rig automation: where it's been and where it's going

    SciTech Connect

    Rinaldi, R.

    1982-06-01

    For over 30 years dreamers, tinkerers and engineers have attempted to automate various drilling functions. Now this effort is paying off, and a partially automated rig is no longer a curiosity. Fully automated and computerized rigs are on the way. For the contractor this means higher productivity, but more maintenance and training responsibilities.

  9. Supernova Explosions

    NSDL National Science Digital Library

    2012-08-06

    In this activity, students are reminded that the Universe is made up of elements and that the heavier elements are created inside of a star, as they learned in the "Elements and You" activity. They are introduced to the life cycle of a star and to the way in which a star's mass affects its process of fusion and eventual death. Students discuss the physical concept of equilibrium as a balancing of forces and observe an experiment to demonstrate what happens to a soda can when the interior and exterior forces are not in equilibrium. An analogy is made between this experiment and core collapse in stars, to show the importance of maintaining equilibrium in stars. Finally, students participate in an activity which demonstrates how mass is ejected from a collapsed star in a supernova explosion, thereby dispersing heavier elements throughout the Universe. This activity is part of a series that has been designed specifically for use with Girl Scouts, but the activities can be used in other settings. Most of the materials are inexpensive or easily found. It is recommended that a leader with astronomy knowledge lead the activities, or at least be available to answer questions, whenever possible.

  10. Small Hot Jet Acoustic Rig Commissioned Into Service

    NASA Technical Reports Server (NTRS)

    Wnuk, Stephen P.

    2003-01-01

    A new test stand, the Small Hot Jet Acoustic Rig, was commissioned into service at NASA Glenn Research Center's Aeroacoustic Propulsion Laboratory. This new rig provides researchers with an all-in-one platform with which to economically evaluate the thrust performance, acoustic performance, and plume turbulence characteristics of new nozzle concepts. It features an integral force balance, exceptionally low internal flownoise, and provisions to conduct laser-based plume turbulence studies with Particle Imaging Velocimetry, shadowgraphs, schlieren photography, and other techniques. The rig also features an integral combustor and can deliver air to the test nozzle at temperatures ranging from ambient to 1300 F. The Small Hot Jet Acoustic Rig is the fourth semipermanent rig now residing in the Aeroacoustic Propulsion Laboratory. It will add to the facility's substantial list of acoustic research capabilities and improve its already impressive productivity.

  11. Advanced Hot Section Materials and Coatings Test Rig

    SciTech Connect

    Dan Davis

    2006-09-30

    Phase I of the Hyperbaric Advanced Hot Section Materials & Coating Test Rig Program has been successfully completed. Florida Turbine Technologies has designed and planned the implementation of a laboratory rig capable of simulating the hot gas path conditions of coal gas fired industrial gas turbine engines. Potential uses of this rig include investigations into environmental attack of turbine materials and coatings exposed to syngas, erosion, and thermal-mechanical fatigue. The principle activities during Phase 1 of this project included providing several conceptual designs for the test section, evaluating various syngas-fueled rig combustor concepts, comparing the various test section concepts and then selecting a configuration for detail design. Conceptual definition and requirements of auxiliary systems and facilities were also prepared. Implementation planning also progressed, with schedules prepared and future project milestones defined. The results of these tasks continue to show rig feasibility, both technically and economically.

  12. Bayesian Networks in the Management of Oil Field Piracy Risk

    E-print Network

    Paris-Sud XI, Université de

    and various applicable rules that constitute the legal status of oil rigs create a complex situation, whichBayesian Networks in the Management of Oil Field Piracy Risk A. Bouejla 1 , X. Chaze 1 , F In recent years, pirate attacks against shipping and oil field installations have become more frequent

  13. Endothelial RIG-I activation impairs endothelial function

    SciTech Connect

    Asdonk, Tobias, E-mail: tobias.asdonk@ukb.uni-bonn.de [Department of Medicine/Cardiology, University of Bonn, Sigmund-Freud-Str. 25, 53105 Bonn (Germany)] [Department of Medicine/Cardiology, University of Bonn, Sigmund-Freud-Str. 25, 53105 Bonn (Germany); Motz, Inga; Werner, Nikos [Department of Medicine/Cardiology, University of Bonn, Sigmund-Freud-Str. 25, 53105 Bonn (Germany)] [Department of Medicine/Cardiology, University of Bonn, Sigmund-Freud-Str. 25, 53105 Bonn (Germany); Coch, Christoph; Barchet, Winfried; Hartmann, Gunther [Institute for Clinical Chemistry and Clinical Pharmacology, University of Bonn, Sigmund-Freud-Str. 25, 53105 Bonn (Germany)] [Institute for Clinical Chemistry and Clinical Pharmacology, University of Bonn, Sigmund-Freud-Str. 25, 53105 Bonn (Germany); Nickenig, Georg; Zimmer, Sebastian [Department of Medicine/Cardiology, University of Bonn, Sigmund-Freud-Str. 25, 53105 Bonn (Germany)] [Department of Medicine/Cardiology, University of Bonn, Sigmund-Freud-Str. 25, 53105 Bonn (Germany)

    2012-03-30

    Highlights: Black-Right-Pointing-Pointer RIG-I activation impairs endothelial function in vivo. Black-Right-Pointing-Pointer RIG-I activation alters HCAEC biology in vitro. Black-Right-Pointing-Pointer EPC function is affected by RIG-I stimulation in vitro. -- Abstract: Background: Endothelial dysfunction is a crucial part of the chronic inflammatory atherosclerotic process and is mediated by innate and acquired immune mechanisms. Recent studies suggest that pattern recognition receptors (PRR) specialized in immunorecognition of nucleic acids may play an important role in endothelial biology in a proatherogenic manner. Here, we analyzed the impact of endothelial retinoic acid inducible gene I (RIG-I) activation upon vascular endothelial biology. Methods and results: Wild type mice were injected intravenously with 32.5 {mu}g of the RIG-ligand 3pRNA (RNA with triphosphate at the 5 Prime end) or polyA control every other day for 7 days. In 3pRNA-treated mice, endothelium-depended vasodilation was significantly impaired, vascular oxidative stress significantly increased and circulating endothelial microparticle (EMP) numbers significantly elevated compared to controls. To gain further insight in RIG-I dependent endothelial biology, cultured human coronary endothelial cells (HCAEC) and endothelial progenitor cells (EPC) were stimulated in vitro with 3pRNA. Both cells types express RIG-I and react with receptor upregulation upon stimulation. Reactive oxygen species (ROS) formation is enhanced in both cell types, whereas apoptosis and proliferation is not significantly affected in HCAEC. Importantly, HCAEC release significant amounts of proinflammatory cytokines in response to RIG-I stimulation. Conclusion: This study shows that activation of the cytoplasmatic nucleic acid receptor RIG-I leads to endothelial dysfunction. RIG-I induced endothelial damage could therefore be an important pathway in atherogenesis.

  14. A Brief Introduction to Ocean Oil Spills Professor Tommy Dickey, Secretary of the Navy/Chief of Naval Operations

    E-print Network

    Fabrikant, Sara Irina

    A Brief Introduction to Ocean Oil Spills Professor Tommy Dickey, Secretary of the Navy by BP Photo provided by BP NASA Terra image #12;What are Causes of Ocean Oil Spills? * Oil drilling rig to date at 10-11 million bbls Interestingly, major oil spills contribute only 5% to total oil input

  15. Ammonium nitrate explosive systems

    DOEpatents

    Stinecipher, Mary M. (Los Alamos, NM); Coburn, Michael D. (Los Alamos, NM)

    1981-01-01

    Novel explosives which comprise mixtures of ammonium nitrate and an ammonium salt of a nitroazole in desired ratios are disclosed. A preferred nitroazole is 3,5-dinitro-1,2,4-triazole. The explosive and physical properties of these explosives may readily be varied by the addition of other explosives and oxidizers. Certain of these mixtures have been found to act as ideal explosives.

  16. Engineering criteria for some current industrial contained nuclear explosion proposals

    Microsoft Academic Search

    C. F. Knutson; B. G. Bray

    1966-01-01

    Several proposals have been made to the federal government to evaluate contained nuclear explosions for future industrial applications. These proposals are concerned with nuclear gas reservoir stimulation and oil shale rubble pile generation for subsequent in-situ retorting. Some of the criteria used in the selection of explosive size and location for these proposals were: (1) adequate burial for complete containment;

  17. Dispersants as Used in Response to the MC252-Spill Lead to Higher Mobility of Polycyclic Aromatic Hydrocarbons in Oil-Contaminated Gulf of Mexico Sand

    PubMed Central

    Zuijdgeest, Alissa; Huettel, Markus

    2012-01-01

    After the explosion of the Deepwater Horizon oil rig, large volumes of crude oil were washed onto and embedded in the sandy beaches and sublittoral sands of the Northern Gulf of Mexico. Some of this oil was mechanically or chemically dispersed before reaching the shore. With a set of laboratory-column experiments we show that the addition of chemical dispersants (Corexit 9500A) increases the mobility of polycyclic aromatic hydrocarbons (PAHs) in saturated permeable sediments by up to two orders of magnitude. Distribution and concentrations of PAHs, measured in the solid phase and effluent water of the columns using GC/MS, revealed that the mobility of the PAHs depended on their hydrophobicity and was species specific also in the presence of dispersant. Deepest penetration was observed for acenaphthylene and phenanthrene. Flushing of the columns with seawater after percolation of the oiled water resulted in enhanced movement by remobilization of retained PAHs. An in-situ benthic chamber experiment demonstrated that aromatic hydrocarbons are transported into permeable sublittoral sediment, emphasizing the relevance of our laboratory column experiments in natural settings. We conclude that the addition of dispersants permits crude oil components to penetrate faster and deeper into permeable saturated sands, where anaerobic conditions may slow degradation of these compounds, thus extending the persistence of potentially harmful PAHs in the marine environment. Application of dispersants in nearshore oil spills should take into account enhanced penetration depths into saturated sands as this may entail potential threats to the groundwater. PMID:23209777

  18. Interfacial tension dynamics, interfacial mechanics, and response to rapid dilution of bulk surfactant of a model oil-water-dispersant system.

    PubMed

    Reichert, Matthew D; Walker, Lynn M

    2013-02-12

    In the 2010 Deepwater Horizon rig explosion and subsequent oil spill, five million barrels of oil were released into the Gulf over the course of several months. Part of the resulting emergency response was the unprecedented use of nearly two million gallons of surfactant dispersant at both the sea surface and well head, giving rise to previously untested conditions of high temperature gradients, high pressures, and flow conditions. To better understand the complex interfacial transport mechanisms that this dispersant poses, we develop a model surfactant-oil-aqueous system of Tween 80 (a primary component in the Corexit dispersant used in the Gulf), squalane, and both simulated seawater as well as deionized water. We measure surfactant adsorption dynamics to the oil-aqueous interface for a range of surfactant concentrations. Using techniques developed in our laboratory, we investigate the impact of convection, step changes in bulk concentration, and interfacial mechanics. We observe dynamic interfacial behavior that is consistent with a reorganization of surfactant at the interface. We demonstrate irreversible adsorption behavior of Tween 80 near a critical interfacial tension value, as well as measure the dilatational elasticity of equilibrium and irreversibly adsorbed layers of surfactant on the oil-aqueous interface. We report high values of the surface dilatational elasticity and surface dilatational viscosity, and discuss these results in terms of their impact regarding oil spill response measures. PMID:23311916

  19. 75 FR 38078 - Incidental Taking of Marine Mammals; Taking of Marine Mammals Incidental to the Explosive Removal...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-01

    ...Marine Mammals; Taking of Marine Mammals Incidental to the Explosive Removal of Offshore Structures in the Gulf of Mexico AGENCY...Authorization (LOA) to take marine mammals incidental to the explosive removal of offshore oil and gas structures (EROS) in...

  20. 75 FR 28566 - Incidental Taking of Marine Mammals; Taking of Marine Mammals Incidental to the Explosive Removal...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-21

    ...Marine Mammals; Taking of Marine Mammals Incidental to the Explosive Removal of Offshore Structures in the Gulf of Mexico AGENCY...Authorization (LOA) to take marine mammals incidental to the explosive removal of offshore oil and gas structures (EROS) in...

  1. 75 FR 54851 - Incidental Taking of Marine Mammals; Taking of Marine Mammals Incidental to the Explosive Removal...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-09

    ...Marine Mammals; Taking of Marine Mammals Incidental to the Explosive Removal of Offshore Structures in the Gulf of Mexico AGENCY...Authorization (LOA) to take marine mammals incidental to the explosive removal of offshore oil and gas structures (EROS) in...

  2. 75 FR 8921 - Incidental Taking of Marine Mammals; Taking of Marine Mammals Incidental to the Explosive Removal...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-02-26

    ...Marine Mammals; Taking of Marine Mammals Incidental to the Explosive Removal of Offshore Structures in the Gulf of Mexico AGENCY...Authorization (LOAs) to take marine mammals incidental to the explosive removal of offshore oil and gas structures (EROS) in...

  3. 76 FR 35856 - Incidental Taking of Marine Mammals; Taking of Marine Mammals Incidental to the Explosive Removal...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-06-20

    ...Marine Mammals; Taking of Marine Mammals Incidental to the Explosive Removal of Offshore Structures in the Gulf of Mexico AGENCY...Authorization (LOA) to take marine mammals incidental to the explosive removal of offshore oil and gas structures (EROS) in...

  4. 75 FR 31423 - Incidental Taking of Marine Mammals; Taking of Marine Mammals Incidental to the Explosive Removal...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-03

    ...Marine Mammals; Taking of Marine Mammals Incidental to the Explosive Removal of Offshore Structures in the Gulf of Mexico AGENCY...Authorization (LOA) to take marine mammals incidental to the explosive removal of offshore oil and gas structures (EROS) in...

  5. Impacts of the Explosive Removal of Offshore Petroleum Platforms on Sea Turtles and Dolphins

    E-print Network

    Impacts of the Explosive Removal of Offshore Petroleum Platforms on Sea Turtles and Dolphins's National Marine Fisheries Service (NMFS) discussed the effects of offshore explosions on en dangered to 19 April 1986. During this period explosives were used to remove several oil platforms in adjacent

  6. 3. EASTERN VIEW OF HOISTING RIG FOR OXYGEN LANCES ON ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    3. EASTERN VIEW OF HOISTING RIG FOR OXYGEN LANCES ON THE FLUX STORAGE FLOOR OF THE FURNACE AISLE IN THE BOP SHOP. - U.S. Steel Duquesne Works, Basic Oxygen Steelmaking Plant, Along Monongahela River, Duquesne, Allegheny County, PA

  7. Using rigging and transfer to animate 3D characters

    E-print Network

    Baran, Ilya, 1981-

    2010-01-01

    Transferring a mesh or skeletal animation onto a new mesh currently requires significant manual effort. For skeletal animations, this involves rigging the character, by specifying how the skeleton is positioned relative ...

  8. Offshore operations report. Britoil's Beatrice gets unique workover rig

    SciTech Connect

    Salter, M.J.; Hogan, K.G.

    1983-11-15

    On the expectation of continuous down-hole production problems in its Beatrice field in the UK sector of the North Sea, Britoil selected a unique workover rig, with some drilling capability, for permanent installation on its B platform. Experience on Beatrice A platform provided inputs for the rig's design, which was accomplished by a multi-disciplined group of engineers and draftsmen, including an experienced toolpusher. The rig features a kelly racking system, in the absence of space for a rathole, and a spooler unit to handle down-hole pump electric cables, small-bore chemical injection lines, and down-hole instrument cables. The rig is fully instrumented to insure safe, pollution-free operation.

  9. Using the Glenn Extreme Environments Rig (GEER) for Venus Research

    NASA Astrophysics Data System (ADS)

    Vento, D. M.; Kremic, T.; Nakley, L. M.

    2015-04-01

    The Glenn Extreme Environments Rig (GEER) has the capability to simulate the Venus atmosphere chemistry, temperature and pressure anywhere from the surface to about 70 km. GEER can provide a CO2/N2 with six trace gasses plus water.

  10. 14. FACILITY IDENTIFICATION STENCILED ON ROOF BEAM, 'RIGGING LOFT' PORTION ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    14. FACILITY IDENTIFICATION STENCILED ON ROOF BEAM, 'RIGGING LOFT' PORTION OF BUILDING 4. - Chollas Heights Naval Radio Transmitting Facility, Public Works Shop, 6410 Zero Road, San Diego, San Diego County, CA

  11. 40. SOUTHWEST CORNER OF STAGE SHOWING RIGGING FOR FLYING SETS, ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    40. SOUTHWEST CORNER OF STAGE SHOWING RIGGING FOR FLYING SETS, LOCATION OF ORIGINAL DOORS IN PROSCENIUM WALL, AND COUNTERWEIGHTS FOR STAGE CURTAIN. - Auditorium Building, 430 South Michigan Avenue, Chicago, Cook County, IL

  12. Initiative for Explosives Detection

    E-print Network

    of highly concealed explosives include the development of enhanced energy sources, improved electronics. For terrorist organizations and insurgents, the Improvised Explosive Device (IED) has become a weapon of choice

  13. Inspection tester for explosives

    DOEpatents

    Haas, Jeffrey S. (San Ramon, CA); Simpson, Randall L. (Livermore, CA); Satcher, Joe H. (Patterson, CA)

    2007-11-13

    An inspection tester that can be used anywhere as a primary screening tool by non-technical personnel to determine whether a surface contains explosives. It includes a body with a sample pad. First and second explosives detecting reagent holders and dispensers are operatively connected to the body and the sample pad. The first and second explosives detecting reagent holders and dispensers are positioned to deliver the explosives detecting reagents to the sample pad. A is heater operatively connected to the sample pad.

  14. Rig Rover System views wellhead from every angle

    SciTech Connect

    Not Available

    1983-09-01

    The Rig Rover System (RRS), a new type of submersible remotely operated vehicle (ROV), has been introduced by Deep Ocean Technology, Oakland, California. It is described as a sophisticated wellhead TV with remote controlled arms, or a remotely controlled vehicle that is deployed like a wellhead TV. The RRS is available in 2 models. Rig Rover was designed specifically to support offshore exploration drilling to 2000 ft. of water.

  15. A new type of calibration rig for wind tunnel balances

    Microsoft Academic Search

    G. I. Johnson

    1989-01-01

    A new balance calibration rig has been designed and built for the T1500 wind tunnel, with applicability to a large variety of balances, including half-model as well as sting-type balances with one to six components. The typical load capacity range is ±50 kN normal force. The rig is automatic with calibration loads generated by pneumatic actuators, controlled by a dedicated

  16. Explosive Detection Equipment Program

    Microsoft Academic Search

    M. K. McPherson

    2010-01-01

    As the Technical Direction Agent for the Department of Defense's Explosive Detection Equipment Program, the Naval Explosive Ordnance Disposal Technology Division provides leadership in the pursuit of effective and suitable technology for concealed threat device detection. This program seeks explosive detection equipment that will effectively and economically confirm the presence or absence of energetic materials in or on: 1) mail\\/parcels\\/cargo,

  17. Plastic explosives Mike Hopkins

    E-print Network

    Ravenel, Douglas

    Plastic explosives Mike Hill Mike Hopkins Doug Ravenel What this talk is about The poster The HHRH The reduced E4 -term 1.1 Plastic explosives: A C4 analog of the Kervaire invariant calculation Conference of Virginia Mike Hopkins Harvard University Doug Ravenel University of Rochester #12;Plastic explosives Mike

  18. RIG-I activation inhibits HIV replication in macrophages

    PubMed Central

    Wang, Yizhong; Wang, Xu; Li, Jieliang; Zhou, Yu; Ho, Wenzhe

    2013-01-01

    The RIG-I signaling pathway is critical in the activation of the type I IFN-dependent antiviral innate-immune response. We thus examined whether RIG-I activation can inhibit HIV replication in macrophages. We showed that the stimulation of monocyte-derived macrophages with 5?ppp-dsRNA, a synthetic ligand for RIG-I, induced the expression of RIG-I, IFN-?/?, and several IRFs, key regulators of the IFN signaling pathway. In addition, RIG-I activation induced the expression of multiple intracellular HIV-restriction factors, including ISGs, several members of the APOBEC3 family, tetherin and CC chemokines, the ligands for HIV entry coreceptor (CCR5). The inductions of these factors were associated with the inhibition of HIV replication in macrophages stimulated by 5?ppp-dsRNA. These observations highlight the importance of RIG-I signaling in macrophage innate immunity against HIV, which can be beneficial for the treatment of HIV disease, where intracellular immune defense is compromised by the virus. PMID:23744645

  19. Use of UV Sources for Detection and Identification of Explosives

    NASA Technical Reports Server (NTRS)

    Hug, William; Reid, Ray; Bhartia, Rohit; Lane, Arthur

    2009-01-01

    Measurement of Raman and native fluorescence emission using ultraviolet (UV) sources (<400 nm) on targeted materials is suitable for both sensitive detection and accurate identification of explosive materials. When the UV emission data are analyzed using a combination of Principal Component Analysis (PCA) and cluster analysis, chemicals and biological samples can be differentiated based on the geometric arrangement of molecules, the number of repeating aromatic rings, associated functional groups (nitrogen, sulfur, hydroxyl, and methyl), microbial life cycles (spores vs. vegetative cells), and the number of conjugated bonds. Explosive materials can be separated from one another as well as from a range of possible background materials, which includes microbes, car doors, motor oil, and fingerprints on car doors, etc. Many explosives are comprised of similar atomic constituents found in potential background samples such as fingerprint oils/skin, motor oil, and soil. This technique is sensitive to chemical bonds between the elements that lead to the discriminating separability between backgrounds and explosive materials.

  20. Explosion proofing the ``explosion proof`` vacuum cleaner

    SciTech Connect

    Jones, R.D.; Chen, K.C.; Holmes, S.W.

    1995-07-01

    Because of the low humidity environments required in the fabrication of nuclear explosives, assembly technicians can be charged to tens of kilovolts while operating, for example, compressed air, venturi-type, `explosion proof` vacuum cleaners. Nuclear explosives must be isolated from all sources of, and return paths for, AC power and from any part of the lightning protection system. This requirement precludes the use of static ground conductors to drain any charge accumulations. Accordingly, an experimental study of the basic charging mechanisms associated with vacuum operations were identified, the charge generation efficacies of various commercial cleaners were established, and a simple method for neutralizing the charge was devised.

  1. New Mix Explosives for Explosive Welding

    NASA Astrophysics Data System (ADS)

    Andreevskikh, Leonid

    2011-06-01

    Suggested and tested were some mix explosives--powder mixtures of a brisant high explosive (HE = RDX, PETN) and an inert diluent (baking soda)--for use in explosive welding. RDX and PETN were selected in view of their high throwing ability and low critical diameter. Since the decomposition of baking soda yields a huge amount of gaseous products, its presence ensures (even at a low HE percentage) a throwing speed that is sufficient for realization of explosive welding, at a reduced brisant action of charge. Mix chargers containing 30-70 wt % HE (the rest baking soda) have been tested experimentally and optimized. For study of possibility to reduce critical diameter of HE mixture, the mixture was prepared where HE crystal sizes did not exceed 10 ?m. The tests, which were performed with this HE, revealed that the mixture detonated stably with the velocity D ~ 2 km/s, if the layer thickness was d = 2 mm. The above explosives afford to markedly diminish deformations within the oblique impact zone and thus to carry out explosive welding of hollow items and thin metallic foils.

  2. Conoco installs eight-pile rig on four-pile platform

    SciTech Connect

    Albaugh, E.K.

    1983-11-01

    Rig 122 recently became the largest standard self-contained drilling rig ever to be mounted on a four-pile, tender-style platform. The conversion sacrificed none of the rig's deep drilling capability, and enabled Conoco to utilize a self-contained platform drilling rig on a satellite platform in the same field. Two cantilever beams, extending some 42 ft beyond platform columns on two sides, support rig weight. Modifications to the rig include separation of pump and engine packages, a pipe-rack extension and a novel skidding system.

  3. 78 FR 70326 - Rigging Equipment for Material Handling; Extension of the Office of Management and Budget's (OMB...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-25

    ...OSHA-2010-0038] Rigging Equipment for Material Handling; Extension of the Office of Management and Budget's (OMB...the Standard on Rigging Equipment for Material Handling...or markings on rigging equipment, developing and...

  4. A design for a flexible, low-cost rigging block for black-box theaters by Michael J. Shields.

    E-print Network

    Shields, Michael J., S.B. Massachusetts Institute of Technology

    2010-01-01

    Theater rigging greatly expands both scenic movement and storage options when putting on a production. Small, black-box theaters are often built without rigging equipment in them. Temporary rigging equipment can greatly ...

  5. 33 CFR 155.400 - Platform machinery space drainage on oceangoing fixed and floating drilling rigs and other...

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...space drainage on oceangoing fixed and floating drilling rigs and other platforms...space drainage on oceangoing fixed and floating drilling rigs and other platforms...person may operate an oceangoing fixed or floating drilling rig or other platform unless...

  6. 33 CFR 155.400 - Platform machinery space drainage on oceangoing fixed and floating drilling rigs and other...

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...space drainage on oceangoing fixed and floating drilling rigs and other platforms...space drainage on oceangoing fixed and floating drilling rigs and other platforms...person may operate an oceangoing fixed or floating drilling rig or other platform unless...

  7. 33 CFR 155.400 - Platform machinery space drainage on oceangoing fixed and floating drilling rigs and other...

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...space drainage on oceangoing fixed and floating drilling rigs and other platforms...space drainage on oceangoing fixed and floating drilling rigs and other platforms...person may operate an oceangoing fixed or floating drilling rig or other platform unless...

  8. Energy efficient engine: High pressure turbine uncooled rig technology report

    NASA Technical Reports Server (NTRS)

    Gardner, W. B.

    1979-01-01

    Results obtained from testing five performance builds (three vane cascades and two rotating rigs of the Energy Efficient Engine uncooled rig have established the uncooled aerodynamic efficiency of the high-pressure turbine at 91.1 percent. This efficiency level was attained by increasing the rim speed and annulus area (AN(2)), and by increasing the turbine reaction level. The increase in AN(2) resulted in a performance improvement of 1.15 percent. At the design point pressure ratio, the increased reaction level rig demonstrated an efficiency of 91.1 percent. The results of this program have verified the aerodynamic design assumptions established for the Energy Efficient Engine high-pressure turbine component.

  9. Lumped parameter identification of a quarter car test rig

    NASA Astrophysics Data System (ADS)

    Taskin, Y.; Yagiz, N.; Yuksek, I.

    2013-02-01

    Quarter car model is a simple and widely used mathematical model to analyze the vibration and control problem of vehicles. In this study, a quarter car test rig is modeled as a lumped parameter system. Model parameters of the system are determined by measurements and experiments. Forced vibration method is used to identify the stiffness and damping parameters of the lumped model. A modal shaker is used to generate the road input in the test rig. The accelerations of the road input, sprung and unsprung masses are measured by piezoelectric accelerometers. The frequency response functions are obtained by using acceleration data. The identified parameters of the test rig are adjusted by comparing the experimental and simulation results.

  10. Contributed Review: Optical micro- and nanofiber pulling rig

    NASA Astrophysics Data System (ADS)

    Ward, J. M.; Maimaiti, A.; Le, Vu H.; Chormaic, S. Nic

    2014-11-01

    We review the method of producing adiabatic optical micro- and nanofibers using a hydrogen/oxygen flame brushing technique. The flame is scanned along the fiber, which is being simultaneously stretched by two translation stages. The tapered fiber fabrication is reproducible and yields highly adiabatic tapers with either exponential or linear profiles. Details regarding the setup of the flame brushing rig and the various parameters used are presented. Information available from the literature is compiled and further details that are necessary to have a functioning pulling rig are included. This should enable the reader to fabricate various taper profiles, while achieving adiabatic transmission of ˜99% for fundamental mode propagation. Using this rig, transmissions ranging from 85% to 95% for higher order modes in an optical nanofiber have been obtained.

  11. Comparison of High-Speed Operating Characteristics of Size 215 Cylindrical-Roller Bearings as Determined in Turbojet Engine and in Laboratory Test Rig

    NASA Technical Reports Server (NTRS)

    Macks, E Fred; Nemeth, Zolton N

    1951-01-01

    A comparison of the operating characteristics of 75-millimeter-bore (size 215) cylindrical-roller one-piece inner-race-riding cage-type bearings was made using a laboratory test rig and a turbojet engine. Cooling correlation parameters were determined by means of dimensional analysis, and the generalized results for both the inner- and outer-race bearing operating temperatures are compared for the laboratory test rig and the turbojet engine. Inner- and outer-race cooling-correlation curves were obtained for the turbojet-engine turbine-roller bearing with the same inner- and outer-race correlation parameters and exponents as those determined for the laboratory test-rig bearing. The inner- and outer-race turbine roller-bearing temperatures may be predicted from a single curve, regardless of variations in speed, load, oil flow, oil inlet temperature, oil inlet viscosity, oil-jet diameter or any combination of these parameters. The turbojet-engine turbine-roller-bearing inner-race temperatures were 30 to 60 F greater than the outer-race-maximum temperatures, the exact values depending on the operating condition and oil viscosity; these results are in contrast to the laboratory test-rig results where the inner-race temperatures were less than the outer-race-maximum temperatures. The turbojet-engine turbine-roller bearing, maximum outer-race circumferential temperature variation was approximately 30 F for each of the oils used. The effect of oil viscosity on inner- and outer-race turbojet-engine turbine-roller-bearing temperatures was found to be significant. With the lower viscosity oil (6x10(exp -7) reyns (4.9 centistokes) at 100 F; viscosity index, 83), the inner-race temperature was approximately 30 to 35 F less than with the higher viscosity oil (53x10(exp -7) reyns (42.8 centistokes) at 100 F; viscosity index, 150); whereas the outer-race-maximum temperatures were 12 to 28 F lower with the lower viscosity oil over the DN range investigated.

  12. The Arrow of Time in Rigged Hilbert Space Quantum Mechanics

    E-print Network

    Robert C. Bishop

    2005-06-22

    Arno Bohm and Ilya Prigogine's Brussels-Austin Group have been working on the quantum mechanical arrow of time and irreversibility in rigged Hilbert space quantum mechanics. A crucial notion in Bohm's approach is the so-called preparation/registration arrow. An analysis of this arrow and its role in Bohm's theory of scattering is given. Similarly, the Brussels-Austin Group uses an excitation/de-excitation arrow for ordering events, which is also analyzed. The relationship between the two approaches is initially discussed focusing on their semi-group operators and time arrows. Finally a possible realist interpretation of the rigged Hilbert space formulation of quantum mechanics is considered.

  13. Whirl Motion of a Seal Test Rig with Squeeze-Film Dampers

    NASA Technical Reports Server (NTRS)

    Proctor, Margaret P.; Gunter, Edgar J.

    2007-01-01

    This paper presents the experimental behavior and dynamic analysis of a high speed test rig with rolling element bearings mounted in squeeze film oil damper bearings. The test rotor is a double overhung configuration with rolling element ball bearings mounted in uncentered squeeze-film oil dampers. The damper design is similar to that employed with various high-speed aircraft HP gas turbines. The dynamic performance of the test rig with the originally installed dampers with an effective damper length of length 0.23-inch was unacceptable. The design speed of 40,000 RPM could not be safely achieved as nonsynchronous whirling at the overhung seal test disk and high amplitude critical speed response at the drive spline section occurred at 32,000 RPM. In addition to the self excited stability and critical speed problems, it was later seen from FFT data analysis, that a region of supersynchronous dead band whirling occurs between 10,000 to 15,000 RPM which can lead to bearing distress and wear. The system was analyzed using both linear and nonlinear techniques. The extended length damper design resulting from the analysis eliminated the rotor subsynchronous whirling, high amplitude critical speed, and the dead band whirling region allowing the system to achieve a speed of 45,000 RPM. However, nonlinear analysis shows that damper lockup could occur with high rotor unbalance at 33,000 RPM, even with the extended squeeze-film dampers. The control of damper lockup will be addressed in a future paper.

  14. RIG-I-like receptors evolved adaptively in mammals, with parallel evolution at LGP2 and RIG-I.

    PubMed

    Cagliani, Rachele; Forni, Diego; Tresoldi, Claudia; Pozzoli, Uberto; Filippi, Giulia; Rainone, Veronica; De Gioia, Luca; Clerici, Mario; Sironi, Manuela

    2014-03-20

    RIG-I-like receptors (RLRs) are nucleic acid sensors that activate antiviral innate immune response. These molecules recognize diverse non-self RNA substrates and are antagonized by several viral inhibitors. We performed an evolutionary analysis of RLR genes (RIG-I, MDA5, and LGP2) in mammals. Results indicated that purifying selection had a dominant role in driving the evolution of RLRs. However, application of maximum-likelihood analyses identified several positions that evolved adaptively. Positively selected sites are located in all domains of MDA5 and RIG-I, whereas in LGP2 they are confined to the helicase domain. In both MDA5 and RIG-I, the linkers separating the caspase activation and recruitment domain and the helicase domain represented preferential targets of positive selection. Independent selective events in RIG-I and LGP2 targeted the corresponding site (Asp421 and Asp179, respectively) within a protruding ?-helix that grips the V-shaped structure formed by the pincer. Most of the positively selected sites in MDA5 are in regions unique to this RLR, including a characteristic insertion within the helicase domain. Additional selected sites are located at the contact interface between MDA5 monomers, in spatial proximity to a positively selected human polymorphism (Arg843His) and immediately external to the parainfluenza virus 5 V protein binding region. Structural analyses suggested that the positively selected His834 residue is involved in parainfluenza virus 5 V protein binding. Data herein suggest that RLRs have been engaged in host-virus genetic conflict leading to diversifying selection and indicate parallel evolution at the same site in RIG-I and LGP2, a position likely to be of central importance in antiviral responses. PMID:24211720

  15. Query Nuclear Explosions Database

    NSDL National Science Digital Library

    2002-01-01

    NUCEXP, National Geoscience Database, provided by the Australian Geological Survey Organization (AGSO), contains entries on nuclear explosions around the world since 1945, with the location, time and size of explosions. To view the records, users must select site and country conducting the test and beginning/end dates.

  16. Idaho Explosives Detection System

    Microsoft Academic Search

    Edward L. Reber; Larry G. Blackwood; Andrew J. Edwards; J. Keith Jewell; Kenneth W. Rohde; Edward H. Seabury; Jeffery B. Klinger

    2005-01-01

    The Idaho Explosives Detection System was developed at the Idaho National Laboratory (INL) to respond to threats imposed by delivery trucks potentially carrying explosives into military bases. A full-scale prototype system has been built and is currently undergoing testing. The system consists of two racks, one on each side of a subject vehicle. Each rack includes a neutron generator and

  17. Explosively pumped laser light

    DOEpatents

    Piltch, Martin S. (Los Alamos, NM); Michelotti, Roy A. (Los Alamos, NM)

    1991-01-01

    A single shot laser pumped by detonation of an explosive in a shell casing. The shock wave from detonation of the explosive causes a rare gas to luminesce. The high intensity light from the gas enters a lasing medium, which thereafter outputs a pulse of laser light to disable optical sensors and personnel.

  18. Coal dust explosibility

    Microsoft Academic Search

    Kenneth L. Cashdollar

    1996-01-01

    This paper reports US Bureau of Mines (USBM) research on the explosibility of coal dusts. The purpose of this work is to improve safety in mining and other industries that process or use coal. Most of the tests were conducted in the USBM 20 litre laboratory explosibility chamber. The laboratory data show relatively good agreement with those from full-scale experimental

  19. Explosive Percolation in Directed Networks

    E-print Network

    Anlage, Steven

    Explosive Percolation in Directed Networks Diego Alcala and Katherine Sytwu With Shane Squires ­ Directed and undirected networks ­ Percolation ­ Explosive percolation · Methodology · Results · Conclusion, infrastructure, etc. · Grow by the addition of links · New class of transitions: "explosive percolation" Taken

  20. High pressure-resistant nonincendive emulsion explosive

    DOEpatents

    Ruhe, Thomas C. (Duquesne, PA); Rao, Pilaka P. (Baghlingampalli, IN)

    1994-01-01

    An improved emulsion explosive composition including hollow microspheres/bulking agents having high density and high strength. The hollow microspheres/bulking agents have true particle densities of about 0.2 grams per cubic centimeter or greater and include glass, siliceous, ceramic and synthetic resin microspheres, expanded minerals, and mixtures thereof. The preferred weight percentage of hollow microspheres/bulking agents in the composition ranges from 3.0 to 10.0 A chlorinated paraffin oil, also present in the improved emulsion explosive composition, imparts a higher film strength to the oil phase in the emulsion. The emulsion is rendered nonincendive by the production of sodium chloride in situ via the decomposition of sodium nitrate, a chlorinated paraffin oil, and sodium perchlorate. The air-gap sensitivity is improved by the in situ formation of monomethylamine perchlorate from dissolved monomethylamine nitrate and sodium perchlorate. The emulsion explosive composition can withstand static pressures to 139 bars and dynamic pressure loads on the order of 567 bars.

  1. Non-detonable explosive simulators

    DOEpatents

    Simpson, Randall L. (Livermore, CA); Pruneda, Cesar O. (Livermore, CA)

    1994-01-01

    A simulator which is chemically equivalent to an explosive, but is not detonable. The simulator has particular use in the training of explosives detecting dogs and calibrating sensitive analytical instruments. The explosive simulants may be fabricated by different techniques, a first involves the use of standard slurry coatings to produce a material with a very high binder to explosive ratio without masking the explosive vapor, and the second involves coating inert beads with thin layers of explosive molecules.

  2. Non-detonable explosive simulators

    DOEpatents

    Simpson, R.L.; Pruneda, C.O.

    1994-11-01

    A simulator which is chemically equivalent to an explosive, but is not detonable. The simulator has particular use in the training of explosives detecting dogs and calibrating sensitive analytical instruments. The explosive simulants may be fabricated by different techniques, a first involves the use of standard slurry coatings to produce a material with a very high binder to explosive ratio without masking the explosive vapor, and the second involves coating inert beads with thin layers of explosive molecules. 5 figs.

  3. GEOFRAC: an explosives stimulation technique for a geothermal well

    SciTech Connect

    Mumma, D.M.; McCullough, F. Jr.; Schmidt, E.W.; Pye, D.S.; Allen, W.C.; Pyle, D.; Hanold, R.J.

    1982-01-01

    The first known use of explosives for stimulating a geothermal well was successfully conducted in December 1981 with a process called GEOFRAC. The 260/sup 0/C well was located at the Union Oil Company's Geysers Field in northern California. For the initial test, 364 kg of a new explosive called HITEX II was placed at a depth of 2256 meters and detonated to verify techniques. The explosive was contained in an aluminum canister to separate it from the well fluids. In the second test, 5000 kg of explosive was used representing a column length of approximately 191 meters. The explosive was detonated at a depth of 1697 meters in the same well. The results of these tests show that HITEX II can be safely emplaced and successfully detonated in a hot geothermal well without causing damage to the well bore or casing.

  4. Unique electrical detonator enhances safety in explosive operations: Case histories

    SciTech Connect

    Motley, J.; Barker, J.

    1996-12-31

    The electroexplosive devices most commonly used in today`s oilfield operations include hot-wire detonators, resistorized detonators, exploding bridgewire devices, and exploding foil initiators. Each of these detonators functions differently and is subject to inherent operational, safety, and/or economic drawbacks. To overcome limitations of the present devices, a new type of electrical detonator has been designed. The new device, designated the rig-type environment detonator, utilizes semiconductor bridge technology and deflagration-to-detonation techniques with secondary explosives and does not require primary explosives, special surface firing panels, or downhole firing units in order to function. The new detonating device is insensitive to common wellsite hazards from radio transmissions, electrostatic discharge, cathodic protection, and welding, which have caused problems with other detonators, and thus, can significantly enhance operational safety. In addition, the new device is cost efficient and versatile as the different embodiments of the device allow it to be easily adapted for use with other common downhole explosive hardware and surface firing panels. A description of the qualification tests to which the new detonator has been subjected will be presented and will compare its safety and operational capabilities to that of other traditionally used devices. Case histories of its usage to date and evaluations from independent testing authorities in both the US and UK attest to its safety and reliability for oilfield explosive operations.

  5. Rigid and Articulated Motion Seen with an Uncalibrated Stereo Rig

    Microsoft Academic Search

    Andreas Ruf; Radu Horaud

    1999-01-01

    This paper establishes a link between uncalibrated stereo vision and the motion of rigid and articulated bod- ies. The variation in the projective reconstruction of a dy- namic scene over time allows an uncalibrated stereo rig to be used as a faithful motion capturing device. We intro- duce an original theoretical framework - projective kine- matics - which allows rigid

  6. HIL simulation of WSP systems on MI6 test rig

    Microsoft Academic Search

    L. Pugi; M. Malvezzi; A. Tarasconi; A. Palazzolo; G. Cocci; M. Violani

    2006-01-01

    In this article, a multi-purpose platform for Hardware In the Loop (HIL) testing of safety relevant railway subsystems, such as odometry boards or wheel slide protection systems, is shown. The rig, called MI-6, is a product of the cooperation of Trenitalia with researchers of Dip. Energetica Sergio Stecco (University of Florence). In this work, special attention has been paid to

  7. Estimating Sensor Pose from Images of a Stereo Rig

    Microsoft Academic Search

    Nicolas Paparoditis; Marc Pierrot-Deseilligny; Radu Horaud

    In this paper we investigate the estimation of pose of images provided by a rigid stereo rig on a mobile mapping system called STERE- OPOLIS developped at IGN in the ARCHI project of the MATIS laboratory. In this system the terrestrial photographies are a georef- erencing device. We use the images as a verticality measurement device by finding the vertical

  8. Mixed Stream Test Rig Winter FY-2011 Report

    SciTech Connect

    Chalres Park; Tedd Lister; Kevin DeWall

    2011-04-01

    This report describes the data and analysis of the initial testing campaign of the Mixed Stream Test Rig (MISTER) at Idaho National Laboratory (INL). It describes the test specimen selection, physical configuration of the test equipment, operations methodology, and data and analysis of specimens exposed in two environments designed to represent those expected for high temperature steam electrolysis (HTSE).

  9. Duck RIG-I CARD Domain Induces the Chicken IFN-? by Activating NF-?B

    PubMed Central

    Chen, Yang; Huang, Zhengyang; Wang, Bin; Yu, Qinming; Liu, Ran; Xu, Qi; Chang, Guobin; Ding, Jiatong; Chen, Guohong

    2015-01-01

    Retinoic acid-inducible gene I- (RIG-I-) like receptors (RLRs) have recently been identified as cytoplasmic sensors for viral RNA. RIG-I, a member of RLRs family, plays an important role in innate immunity. Although previous investigations have proved that RIG-I is absent in chickens, it remains largely unknown whether the chicken can respond to RIG-I ligand. In this study, the eukaryotic expression vectors encoding duRIG-I full length (duck RIG-I, containing all domains), duRIG-I N-terminal (containing the two caspase activation and recruitment domain, CARDs), and duRIG-I C-terminal (containing helicase and regulatory domains) labeled with 6?His tags were constructed successfully and detected by western blotting. Luciferase reporter assay and enzyme-linked immunosorbent assay (ELISA) detected the duRIG-I significantly activated NF-?B and induced the expression of IFN-? when polyinosinic-polycytidylic acid (poly[I:C], synthetic double-stranded RNA) challenges chicken embryonic fibroblasts cells (DF1 cells), while the duRIG-I was inactive in the absence of poly[I:C]. Further analysis revealed that the CARDs (duRIG-I-N) induced IFN-? production regardless of the presence of poly[I:C], while the CARD-lacking duRIG-I (duRIG-I-C) was not capable of activating downstream signals. These results indicate that duRIG-I CARD domain plays an important role in the induction of IFN-? and provide a basis for further studying the function of RIG-I in avian innate immunity. PMID:25918711

  10. 75 FR 37783 - National Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-30

    ...Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling AGENCY: Department...Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling (the Commission...Deepwater Horizon explosion, fire and oil spill and develop options to guard...

  11. Optically measured explosive impulse

    NASA Astrophysics Data System (ADS)

    Biss, Matthew M.; McNesby, Kevin L.

    2014-06-01

    An experimental technique is investigated to optically measure the explosive impulse produced by laboratory-scale spherical charges detonated in air. Explosive impulse has historically been calculated from temporal pressure measurements obtained via piezoelectric transducers. The presented technique instead combines schlieren flow visualization and high-speed digital imaging to optically measure explosive impulse. Prior to an explosive event, schlieren system calibration is performed using known light-ray refractions and resulting digital image intensities. Explosive charges are detonated in the test section of a schlieren system and imaged by a high-speed digital camera in pseudo-streak mode. Spatiotemporal schlieren intensity maps are converted using an Abel deconvolution, Rankine-Hugoniot jump equations, ideal gas law, triangular temperature decay profile, and Schardin's standard photometric technique to yield spatiotemporal pressure maps. Temporal integration of individual pixel pressure profiles over the positive pressure duration of the shock wave yields the explosive impulse generated for a given radial standoff. Calculated explosive impulses are shown to exhibit good agreement between optically derived values and pencil gage pressure transducers.

  12. Micro-explosion of compound drops

    NASA Astrophysics Data System (ADS)

    Chen, Chun-Kuei; Lin, Ta-Hui

    2014-08-01

    Introducing water into spray combustion systems, by either water-in-oil emulsification or supplementary water injection, is one of the major techniques for combustion improvement and NOx reduction. Plentiful researches are available on combustion of water-in-oil emulsion fuel drops. The emulsified liquid is a heterogeneous mixture of immiscible liquids. One component forms the continuous phase and the other component forms the discrete phase. The discrete phase consists of globules of the one fluid that are suspended in the continuous phase fluid. Water-in-oil emulsions are commonly considered for combustion applications because emulsions can result in micro-explosion, thereby reducing the average drop diameter to enhance liquid vaporization, and suppressing the formation of soot and NOx. However, the water addition generally does not exceed about 20% for smooth engine operations[!, 21. The combustion characteristics and micro-explosion of emulsion drop were studied by many researchers. The micro-explosion of water in fuel emulsion drops was caused by very fast growth of superheated water vapor bubbles, its superheat limits must be lower than the boiling point temperature of the fuel. These bubbles were primarily governed by the pressure difference between the superheated vapor and the liquid, and by the inertia imparted to the liquid by the motion of the bubble surface[3 6 In this study, we used a coaxial nozzle to generation the multi-component drop. The different type of water-in-oil fuel drops called the compound drops. Unlike an emulsion drop, a compound drop consists of a water core and a fuel shell, which can originate from the phase separation of emulsion[7, 81 or a water drop colliding with a fuel drop[9, 101 Burning and micro-explosion of compound drops have been found to be distinct from those of emulsion drops[9-111 Wang et al.[9 , 101 studied the combustion characteristics of collision merged alkane-water drops. The merged drops appeared in adhesive and inserted manners. The drop ignition delay time increased with increasing water content. The average burning rate of alkane-water drops decreased with increasing water content. In the burning process, hexadecane-water drops exhibited flash vaporization or flame extinction. Heterogeneous explosion was occasionally observed in drops with trapped air bubbles. The air bubbles were assumed to be the nucleation points of the heterogeneous explosions. Chen and Lin[11 studied the characteristics of water-in-dodecane compound drop with different water content, diameter of drop and environmental oxygen concentration. The vaporization rate increased with increasing environmental oxygen concentration. The compound drops micro-exploded during the burning process in a random way. The number of micro-explosions was majorly influenced by drop diameter, followed by environmental oxygen concentration. Water content had a weaker effect on micro-explosion. As available literature and research results of compound drop burning are scarce, their combustion and micro-explosion behaviors are still poorly understood. In this regard, we changed the drop nature as compound drops to study their combustion characteristics and micro-explosion phenomena.

  13. Lithium niobate explosion monitor

    DOEpatents

    Bundy, Charles H. (Clearwater, FL); Graham, Robert A. (Los Lunas, NM); Kuehn, Stephen F. (Albuquerque, NM); Precit, Richard R. (Albuquerque, NM); Rogers, Michael S. (Albuquerque, NM)

    1990-01-01

    Monitoring explosive devices is accomplished with a substantially z-cut lithium niobate crystal in abutment with the explosive device. Upon impact by a shock wave from detonation of the explosive device, the crystal emits a current pulse prior to destruction of the crystal. The current pulse is detected by a current viewing transformer and recorded as a function of time in nanoseconds. In order to self-check the crystal, the crystal has a chromium film resistor deposited thereon which may be heated by a current pulse prior to detonation. This generates a charge which is detected by a charge amplifier.

  14. FOUDRE ET ATMOSPHERES EXPLOSIVES LIGHTNING AND EXPLOSIVES ATMOSPHERES

    E-print Network

    Paris-Sud XI, Université de

    97-36 FOUDRE ET ATMOSPHERES EXPLOSIVES LIGHTNING AND EXPLOSIVES ATMOSPHERES HALAMA S., 1NERIS l'utilisation de produits sensibles pouvant provoquer facilement des incendies et des explosions. C inflammables. Les atmospheres explosives gazeuses et poussiereuses ainsi que les conditions favorisant [eur

  15. Occupational exposure to airborne contaminants during offshore oil drilling.

    PubMed

    Kirkhus, Niels E; Thomassen, Yngvar; Ulvestad, Bente; Woldbæk, Torill; Ellingsen, Dag G

    2015-07-01

    The aim was to study exposure to airborne contaminants in oil drillers during ordinary work. Personal samples were collected among 65 drill floor workers on four stationary and six moveable rigs in the Norwegian offshore sector. Air concentrations of drilling mud were determined based on measurements of the non-volatile mud components Ca and Fe. The median air concentration of mud was 140 ?g m(-3). Median air concentrations of oil mist (180 ?g m(-3)), oil vapour (14 mg m(-3)) and organic carbon (46 ?g m(-3)) were also measured. All contaminants were detected in all work areas (drill floor, shaker area, mud pits, pump room, other areas). The highest air concentrations were measured in the shaker area, but the differences in air concentrations between working areas were moderate. Oil mist and oil vapour concentrations were statistically higher on moveable rigs than on stationary rigs, but after adjusting for differences in mud temperature the differences between rig types were no longer of statistical significance. Statistically significant positive associations were found between mud temperature and the concentrations of oil mist (Spearman's R = 0.46) and oil vapour (0.39), and between viscosity of base oil and oil mist concentrations. Use of pressure washers was associated with higher air concentrations of mud. A series of 18 parallel stationary samples showed a high and statistically significant association between concentrations of organic carbon and oil mist (r = 0.98). This study shows that workers are exposed to airborne non-volatilized mud components. Air concentrations of volatile mud components like oil mist and oil vapour were low, but were present in all the studied working areas. PMID:26020723

  16. Poster: Building a test-bed for wireless sensor networking for under-water oil and gas installations

    E-print Network

    Zhou, Shengli

    company and deploy our sensor and actuators on an off-shore oil and gas rig. The use of such realPoster: Building a test-bed for wireless sensor networking for under-water oil and gas@ifi.uio.no 1 Introduction and background When the oil and gas industry moves its production facilities

  17. Test results of performance and oil circulation rate of commercial reciprocating compressors of different capacities working with

    E-print Network

    Fernández de Córdoba, Pedro

    Test results of performance and oil circulation rate of commercial reciprocating compressors test rig. Test results have been systematically compared with their R407C reference performance data others. The compressors used POE oil as lubricant and additional oil circulation rate (OCR) tests

  18. Idaho Explosive Detection System

    ScienceCinema

    Klinger, Jeff

    2013-05-28

    Learn how INL researchers are making the world safer by developing an explosives detection system that can inspect cargo. For more information about INL security research, visit http://www.facebook.com/idahonationallaboratory

  19. Parametric Explosion Spectral Model

    SciTech Connect

    Ford, S R; Walter, W R

    2012-01-19

    Small underground nuclear explosions need to be confidently detected, identified, and characterized in regions of the world where they have never before occurred. We develop a parametric model of the nuclear explosion seismic source spectrum derived from regional phases that is compatible with earthquake-based geometrical spreading and attenuation. Earthquake spectra are fit with a generalized version of the Brune spectrum, which is a three-parameter model that describes the long-period level, corner-frequency, and spectral slope at high-frequencies. Explosion spectra can be fit with similar spectral models whose parameters are then correlated with near-source geology and containment conditions. We observe a correlation of high gas-porosity (low-strength) with increased spectral slope. The relationship between the parametric equations and the geologic and containment conditions will assist in our physical understanding of the nuclear explosion source.

  20. Explosive Nucleosynthesis: Prospects

    E-print Network

    David Arnett

    1999-08-16

    Explosive nucleosynthesis is a combination of the nuclear physics of thermonuclear reactions, and the hydrodynamics of the plasma in which the reactions occur. It depends upon the initial conditions---the stellar evolution up to the explosive instability, and the nature of the explosion mechanism. Some key issues for explosive nucleosynthesis are the interaction of burning with hydrodynamics, the degree of microscopic mixing in convective zones, and the breaking of spherical symmetry by convection and rotation. Recent experiments on high intensity lasers provides new opportunities for laboratory testing of astrophysical hydrodynamic codes. Implications of SN1987A, SN1998bw (GRB980425?), and eta Carina are discussed, as well as the formation of black holes or neutron stars.

  1. Idaho Explosive Detection System

    SciTech Connect

    Klinger, Jeff

    2011-01-01

    Learn how INL researchers are making the world safer by developing an explosives detection system that can inspect cargo. For more information about INL security research, visit http://www.facebook.com/idahonationallaboratory

  2. Effect of Velocity of Detonation of Explosives on Seismic Radiation

    NASA Astrophysics Data System (ADS)

    Stroujkova, A. F.; Leidig, M.; Bonner, J. L.

    2014-12-01

    We studied seismic body wave generation from four fully contained explosions of approximately the same yields (68 kg of TNT equivalent) conducted in anisotropic granite in Barre, VT. The explosions were detonated using three types of explosives with different velocities of detonation (VOD): Black Powder (BP), Ammonium Nitrate Fuel Oil/Emulsion (ANFO), and Composition B (COMP B). The main objective of the experiment was to study differences in seismic wave generation among different types of explosives, and to determine the mechanism responsible for these differences. The explosives with slow burn rate (BP) produced lower P-wave amplitude and lower corner frequency, which resulted in lower seismic efficiency (0.35%) in comparison with high burn rate explosives (2.2% for ANFO and 3% for COMP B). The seismic efficiency estimates for ANFO and COMP B agree with previous studies for nuclear explosions in granite. The body wave radiation pattern is consistent with an isotropic explosion with an added azimuthal component caused by vertical tensile fractures oriented along pre-existing micro-fracturing in the granite, although the complexities in the P- and S-wave radiation patterns suggest that more than one fracture orientation could be responsible for their generation. High S/P amplitude ratios and low P-wave amplitudes suggest that a significant fraction of the BP source mechanism can be explained by opening of the tensile fractures as a result of the slow energy release.

  3. Numerical Model for Hydrovolcanic Explosions

    Microsoft Academic Search

    Charles Mader; Michael Gittings

    2007-01-01

    A hydrovolcanic explosion is generated by the interaction of hot magma with ground water. It is called Surtseyan after the 1963 explosive eruption off Iceland. The water flashes to steam and expands explosively. Liquid water becomes water gas at constant volume and generates pressures of about 3GPa. The Krakatoa hydrovolcanic explosion was modeled using the full Navier-Stokes AMR Eulerian compressible

  4. Splashes from Underwater Explosions

    Microsoft Academic Search

    H. Kolsky; J. P. Lewis; M. T. Sampson; A. C. Shearman; C. I. Snow

    1949-01-01

    The splashes from the underwater explosions of 1 and 10 1b. charges of P.E. no. 2 and Nobel's Explosive '808' at various depths have been photographed with cine-cameras. The experiments were carried out in a sheltered pond which enabled the surface phenomena to be studied in greater detail than has been done hitherto, and a number of new phenomena have

  5. What Factors Influence the Oil Market Dynamics?

    Microsoft Academic Search

    I. PODKOLZINA

    2009-01-01

    The paper reviews the main tendencies of the oil market over the last several years. Given that the explosive growth in crude oil prices during 2007 the first half of 2008 was caused by speculations the current drop is not a temporary relief in the course of commodities super-cycle and the boom has come to an end. Crude oil prices

  6. Gulf of Mexico Oil Spill - Landsat 5

    USGS Multimedia Gallery

    On April 20, 2010, an explosion at an oil well in the Gulf of Mexico resulted in a major oil spill. Since then, emergency response efforts have been underway to cap the leaking well system and contain the growing oil slick before it reaches wildlife refuges, fisheries, and beaches along the southern...

  7. Residual Oil Reservoir Recovery With Seismic Vibrations

    Microsoft Academic Search

    V. N. Nikolaevskiy; G. P. Lopukhov; Liao Yizhu; M. J. Economides

    1996-01-01

    Evidence suggests that certain vibrations, generated either by natural seismic events or by artificial explosions, have altered the production behavior of oil wells at distances as much as 200 km from the epicenter. These changes have affected the produced water\\/oil ratio; the water production rate increased from a formation that was at approximately the interstitial water saturation, while the oil

  8. Introduction Explosions in evolution problems The explosion time Stochastic Differential Equations with explosions

    E-print Network

    Groisman, Pablo

    Introduction Explosions in evolution problems The explosion time Stochastic Differential Equations with explosions Pablo Groisman University of Buenos Aires Joint work with J. Fern´andez Bonder, UBA J.D. Rossi, UBA ERPEM, November 29th, 2006 Pablo Groisman UBA Stochastic Differential Equations with explosions

  9. Non-detonable and non-explosive explosive simulators

    DOEpatents

    Simpson, Randall L. (Livermore, CA); Pruneda, Cesar O. (Livermore, CA)

    1997-01-01

    A simulator which is chemically equivalent to an explosive, but is not detonable or explodable. The simulator is a combination of an explosive material with an inert material, either in a matrix or as a coating, where the explosive has a high surface ratio but small volume ratio. The simulator has particular use in the training of explosives detecting dogs, calibrating analytical instruments which are sensitive to either vapor or elemental composition, or other applications where the hazards associated with explosives is undesirable but where chemical and/or elemental equivalence is required. The explosive simulants may be fabricated by different techniques. A first method involves the use of standard slurry coatings to produce a material with a very high binder to explosive ratio without masking the explosive vapor, and a second method involves coating inert substrates with thin layers of explosive.

  10. Non-detonable and non-explosive explosive simulators

    DOEpatents

    Simpson, R.L.; Pruneda, C.O.

    1997-07-15

    A simulator which is chemically equivalent to an explosive, but is not detonable or explodable is disclosed. The simulator is a combination of an explosive material with an inert material, either in a matrix or as a coating, where the explosive has a high surface ratio but small volume ratio. The simulator has particular use in the training of explosives detecting dogs, calibrating analytical instruments which are sensitive to either vapor or elemental composition, or other applications where the hazards associated with explosives is undesirable but where chemical and/or elemental equivalence is required. The explosive simulants may be fabricated by different techniques. A first method involves the use of standard slurry coatings to produce a material with a very high binder to explosive ratio without masking the explosive vapor, and a second method involves coating inert substrates with thin layers of explosive. 11 figs.

  11. Fire and explosion hazards of Grade E cargo. Interim report, July 1993August 1994

    Microsoft Academic Search

    R. G. Zalosh; D. M. Finnegan

    1995-01-01

    This study was motivated by a cargo tank explosion incident involving No. 6 fuel oil at a temperature well below its flash point. The overall objective of the study has been to evaluate the general fire and explosion hazards of high flash point liquid cargo, i.e., Grade E cargo. A review of Coast Guard and National Transportation Safety Board incident

  12. Energy efficient engine sector combustor rig test program

    NASA Technical Reports Server (NTRS)

    Dubiel, D. J.; Greene, W.; Sundt, C. V.; Tanrikut, S.; Zeisser, M. H.

    1981-01-01

    Under the NASA-sponsored Energy Efficient Engine program, Pratt & Whitney Aircraft has successfully completed a comprehensive combustor rig test using a 90-degree sector of an advanced two-stage combustor with a segmented liner. Initial testing utilized a combustor with a conventional louvered liner and demonstrated that the Energy Efficient Engine two-stage combustor configuration is a viable system for controlling exhaust emissions, with the capability to meet all aerothermal performance goals. Goals for both carbon monoxide and unburned hydrocarbons were surpassed and the goal for oxides of nitrogen was closely approached. In another series of tests, an advanced segmented liner configuration with a unique counter-parallel FINWALL cooling system was evaluated at engine sea level takeoff pressure and temperature levels. These tests verified the structural integrity of this liner design. Overall, the results from the program have provided a high level of confidence to proceed with the scheduled Combustor Component Rig Test Program.

  13. RIG-I self-oligomerization is either dispensable or very transient for signal transduction.

    PubMed

    Louber, Jade; Kowalinski, Eva; Bloyet, Louis-Marie; Brunel, Joanna; Cusack, Stephen; Gerlier, Denis

    2014-01-01

    Effective host defence against viruses depends on the rapid triggering of innate immunity through the induction of a type I interferon (IFN) response. To this end, microbe-associated molecular patterns are detected by dedicated receptors. Among them, the RIG-I-like receptors RIG-I and MDA5 activate IFN gene expression upon sensing viral RNA in the cytoplasm. While MDA5 forms long filaments in vitro upon activation, RIG-I is believed to oligomerize after RNA binding in order to transduce a signal. Here, we show that in vitro binding of synthetic RNA mimicking that of Mononegavirales (Ebola, rabies and measles viruses) leader sequences to purified RIG-I does not induce RIG-I oligomerization. Furthermore, in cells devoid of endogenous functional RIG-I-like receptors, after activation of exogenous Flag-RIG-I by a 62-mer-5'ppp-dsRNA or by polyinosinic:polycytidylic acid, a dsRNA analogue, or by measles virus infection, anti-Flag immunoprecipitation and specific elution with Flag peptide indicated a monomeric form of RIG-I. Accordingly, when using the Gaussia Luciferase-Based Protein Complementation Assay (PCA), a more sensitive in cellula assay, no RIG-I oligomerization could be detected upon RNA stimulation. Altogether our data indicate that the need for self-oligomerization of RIG-I for signal transduction is either dispensable or very transient. PMID:25259935

  14. New wave drilling rigs offer automation, ergonomics and economy

    SciTech Connect

    Von Flatern, R.

    1996-05-01

    The drilling industry is being pressured to do its job not just faster and cheaper, but also safer and cleaner. The latest land and offshore platform drilling rig designs incorporate modularization, mechanization, computers and environmental protection in an attempt to meet those demands. This paper reviews the technology of these new designs and how they can operate to ensure safety and environmental protection for lower costs.

  15. Frozen Rigging Model of the Energy Dominated Universe

    Microsoft Academic Search

    Brandon Carter

    2005-01-01

    Composite rigging systems, involving membranes that meet on strings that meet\\u000aon monopoles, arise naturally by the Kibble mechanism as topological defects in\\u000afield theories involving spontaneous symmetry breaking. Such systems will tend\\u000ato freeze out into static lattice type configurations with energy contribution\\u000aultimately be provided by the membranes. It has been suggested by Bucher and\\u000aSpergel that on

  16. North Sea rig quarters designed with hotel standards

    SciTech Connect

    Not Available

    1991-03-06

    According to Santa Fe Drilling Co., the living quarters on its new mobile offshore drilling unit (MODU) Galaxy 1 are designed with hotel standards. Santa Fe believes personnel productivity will be increased by providing a more relaxing off-duty environment. The rig quarters were designed by architects and interior designers with a bias toward comfort, says Santa Fe. The Galaxy 1 MODU jack up will be employed in three modes: Stand-alone drilling, Production drilling cantilevered over a platform, Tender assist operations. This rig can support more deck load and has longer leg length than any other jack up, its owners say. The unit was designed by Friede and Goldman Ltd. of New Orleans for drilling in the harsh environment of the central North Sea, on a year-round basis, in water depths up to 310 ft and seasonally in water depths up to 400 ft. The rig will be capable of drilling up to 30,000 ft and handling surface pressures up to 15,000 psi.

  17. Equations of State and High-Pressure Phases of Explosives

    Microsoft Academic Search

    Suhithi M. Peiris; Jared C. Gump

    2008-01-01

    Energetic materials, being the collective name for explosives, propellants, pyrotechnics, and other flash-bang materials, span a wide range of composite chemical formulations. Most militarily used energetics are solids composed of particles of the pure energetic material held together by a binder. Commonly used binders include various oils, waxes, and polymers or plasticizers, and the composite is melt cast, cured, or

  18. 78 FR 52562 - Outer Continental Shelf (OCS), Gulf of Mexico (GOM), Oil and Gas Lease Sales, Central Planning...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-23

    ...EIS) and in the Gulf of Mexico OCS Oil and Gas Lease Sales: 2013-2014...the Deepwater Horizon explosion, oil spill, and response. The CPA Supplemental...potential environmental effects of oil and natural gas leasing,...

  19. 78 FR 42544 - Outer Continental Shelf (OCS), Gulf of Mexico (GOM), Oil and Gas Lease Sale, Western Planning...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-16

    ...Multisale EIS) and the Gulf of Mexico OCS Oil and Gas Lease Sales: 2013-2014...the Deepwater Horizon explosion, oil spill, and response. The WPA Lease Sales...potential environmental effects of oil and natural gas leasing,...

  20. 77 FR 29682 - Gulf of Mexico, Outer Continental Shelf, Central Planning Area, Oil and Gas Lease Sale 216/222

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-18

    ...the Deepwater Horizon explosion and oil spill. After careful consideration, BOEM...reforms since the Deepwater Horizon oil spill and the economic and energy security...infrastructure includes advanced oil spill response infrastructure that...

  1. Continuous steam explosion

    SciTech Connect

    Taylor, J.D.; Yu, E.K.C. [Stake Technology Ltd., Norval, Ontario (Canada)

    1995-02-01

    StakeTech has focused on developing steam explosion on a commercial basis. The company essentially a biomass conversion company dealing with cellulosic biomass such as wood, crop residues and, more recently, wastepaper and municipal solid waste (MSW). They are faced with a tremendous opportunity to develop uses for the 50% of biomass that is currently wasted. The StakeTech steam explosion process is able to break the bonds using only high-pressure steam with no chemical additives. The continuous StakeTech System now has been installed in five countries and has proved effective in processing a wide variety of raw materials including wood chips, straw, sugarcane bagasse, and waste paper. End-use applications range from specialty chemicals to large-volume agricultural products. The increase of development activities in steam explosion should lead to expanded end-use applications, and acceptance of the technology by industry should accelerate in the years to come.

  2. ELECTROMAGNETIC FIELD EFFECTS IN EXPLOSIVES

    SciTech Connect

    Tasker, D. G.; Whitley, V. H. [MS J566, Los Alamos National Laboratory, Los Alamos, NM 87545 (United States); Lee, R. J. [Lndian Head Division, Naval Surface Warfare Center, Indian Head, MD 20640 (United States)

    2009-12-28

    Present and previous research on the effects of electromagnetic fields on the initiation and detonation of explosives and the electromagnetic properties of explosives are reviewed. Among the topics related to detonating explosives are: enhancement of performance; and control of initiation and growth of reaction. Two series of experiments were performed to determine the effects of 1-T magnetic fields on explosive initiation and growth in the modified gap test and on the propagation of explosively generated plasma into air. The results have implications for the control of reactions in explosives and for the use of electromagnetic particle velocity gauges.

  3. Seabirds at Risk around Offshore Oil Platforms in the North-west Atlantic

    Microsoft Academic Search

    Francis K Wiese; W. A Montevecchi; G. K Davoren; F Huettmann; A. W Diamond; J Linke

    2001-01-01

    Seabirds aggregate around oil drilling platforms and rigs in above average numbers due to night lighting, flaring, food and other visual cues. Bird mortality has been documented due to impact on the structure, oiling and incineration by the flare. The environmental circumstances for offshore hydrocarbon development in North-west Atlantic are unique because of the harsh climate, cold waters and because

  4. More MODU attrition key to better rigs and contractor profits. [Mobile Offshore Drilling Units

    SciTech Connect

    Kott, G.L. (Global Marine Drilling Co., Houston, TX (United States))

    1993-09-13

    For the offshore drilling industry to remain profitable, the attrition rate of aging mobile offshore drilling units (MODUs) needs to increase. These aging rigs should be removed and possibly replaced with new or upgraded rigs so contractors can deliver more reliable equipment and service to the operators. Unfortunately, only moderate attrition of the worldwide fleet appears likely. An increase in rig day rates is necessary to increase cash flow to levels that can support new rig construction. The long-term challenge for the contract drilling industry is to develop enough cash flow to allow for rig fleet replacement during the late 1990s and early 2000s. The paper discusses rig attrition, the MODU supply, day rates, and consolidation of contractors.

  5. Microcantilever detector for explosives

    DOEpatents

    Thundat, Thomas G. (Knoxville, TN)

    1999-01-01

    Methods and apparatus for detecting the presence of explosives by analyzing a vapor sample from the suspect vicinity utilize at least one microcantilever. Explosive gas molecules which have been adsorbed onto the microcantilever are subsequently heated to cause combustion. Heat, along with momentum transfer from combustion, causes bending and a transient resonance response of the microcantilever which may be detected by a laser diode which is focused on the microcantilever and a photodetector which detects deflection of the reflected laser beam caused by heat-induced deflection and resonance response of the microcantilever.

  6. High-nitrogen explosives

    SciTech Connect

    Naud, D. (Darren); Hiskey, M. A. (Michael A.); Kramer, J. F. (John F.); Bishop, R. L. (Robert L.); Harry, H. H. (Herbert H.); Son, S. F. (Steven F.); Sullivan, G. K. (Gregg K.)

    2002-01-01

    The syntheses and characterization of various tetrazine and furazan compounds offer a different approach to explosives development. Traditional explosives - such as TNT or RDX - rely on the oxidation of the carbon and hydrogen atoms by the oxygen carrying nitro group to produce the explosive energy. High-nitrogen compounds rely instead on large positive heats of formation for that energy. Some of these high-nitrogen compounds have been shown to be less sensitive to initiation (e.g. by impact) when compared to traditional nitro-containing explosives of similar performances. Using the precursor, 3,6-bis-(3,5-dimethylpyrazol-1-yl)-s-tetrazine (BDT), several useful energetic compounds based on the s-tetrazine system have been synthesized and studied. The compound, 3,3{prime}-azobis(6-amino-s-tetrazine) or DAAT, detonates as a half inch rate stick despite having no oxygen in the molecule. Using perfluoroacetic acid, DAAT can be oxidized to give mixtures of N-oxide isomers (DAAT03.5) with an average oxygen content of about 3.5. This energetic mixture burns at extremely high rates and with low dependency on pressure. Another tetrazine compound of interest is 3,6-diguanidino-s-tetrazine(DGT) and its dinitrate and diperchlorate salts. DGT is easily synthesized by reacting BDT with guanidine in methanol. Using Caro's acid, DGT can be further oxidized to give 3,6-diguanidino-s-tetrazine-1,4-di-N-oxide (DGT-DO). Like DGT, the di-N-oxide can react with nitric acid or perchloric acid to give the dinitrate and the diperchlorate salts. The compounds, 4,4{prime}-diamino-3,3{prime}-azoxyfurazan (DAAF) and 4,4{prime}-diamino-3,3{prime}-azofurazan (DAAzF), may have important future roles in insensitive explosive applications. Neither DAAF nor DAAzF can be initiated by laboratory impact drop tests, yet both have in some aspects better explosive performances than 1,3,5-triamino-2,4,6-trinitrobenzene TATB - the standard of insensitive high explosives. The thermal stability of DAAzF is equal to that of hexanitrostilbene (HNS), yet it has a greater CJ pressure and detonation velocity. In an effort to reduce the critical diameter of TATB without sacrificing its insensitivity, we have studied the explosive performances of TATB mixed with DAAzlF (X-0561) and TATB mixed with DAAF (X-0563).

  7. Explosion at Walton Colliery Yorkshire 

    E-print Network

    Rogers, T. A.

    MINISTRY OF POWER EXPLOSION AT WALTON COLLIERY YORKSHIRE REPORT On the causes of, and circumstances attending, the explosion which occurred at Walton Colliery, Yorkshire, on 22nd April, 1959 by T. A. ROGERS, C.B.E. H.M. ...

  8. Explosion at Glyncorrwg Colliery, Glamorganshire 

    E-print Network

    Jones, T.A.

    MINISTRY OF FUEL AND POWER EXPLOSION AT GLYNCORRWG COLLIERY, GLAMORGANSHIRE REPORT On the causes of, and circumstances attending, the Explosion which occurred at Glyncorrwg Colliery, Glamorganshire, on 13th January, ...

  9. Explosion at Cardowan Colliery Lanarkshire 

    E-print Network

    Houston, H. R.

    MINISTRY OF POWER EXPLOSION AT CARDOWAN COLLIERY LANARKSHIRE REPORT On the causes of, and circumstances attending, the explosion which occurred at Cardowan Colliery, Lanarkshire, on 25th July, 1960 BY H. R. HOUSTON, C.B.E ...

  10. Cotton Gin Dust Explosibility Determinations

    E-print Network

    Vanderlick, Francis Jerome

    2014-01-06

    the dust for explosibility based on the American Society for Testing and Materials (ASTM) E 1226 to ensure proper regulation of facilities. Dusts found in cotton gins were tested to determine if they are explosible. Safety Consulting Engineers Inc. (SCE...

  11. Portable Raman explosives detection

    Microsoft Academic Search

    David S. Moore; R. Jason Scharff

    2009-01-01

    Recent advances in portable Raman instruments have dramatically increased their application to emergency response and forensics,\\u000a as well as homeland defense. This paper reviews the relevant attributes and disadvantages of portable Raman spectroscopy,\\u000a both essentially and instrumentally, to the task of explosives detection in the field.

  12. Environmental fate of explosives

    Microsoft Academic Search

    Judith C. Pennington; James M. Brannon

    2002-01-01

    Waste disposal practices associated with military production of weapons, especially before and during World War II, have resulted in significant contamination of soils and ground water with high explosives such as TNT, RDX and HMX. Development of remediation and risk management strategies for these contaminated sites as well as development of approaches for sustainable use of active training and weapons

  13. Explosive Z Pinch

    E-print Network

    Francesco Giacosa; Ralf Hofmann; Markus Schwarz

    2006-11-08

    We propose an explanation for the recently observed powerful contained explosion in a Z pinch experiment performed at Sandia National Laboratories. Our arguments are based on the assumption that a pure SU(2) Yang-Mills theory of scale $\\sim 0.5 $MeV is responsible for the emergence of the electron and its neutrino.

  14. Ecotoxicology of Explosives

    SciTech Connect

    Efroymson, Rebecca Ann [ORNL; Giffen, Neil R [ORNL; Morrill, Valerie [U.S. Army Yuma Proving Ground; Jenkins, Thomas [U.S. Corps of Engineers, Cold Regions Research & Engineering Laboratory

    2009-04-01

    Managing sites contaminated with munitions constituents is an international challenge. Although the choice of approach and the use of Ecological Risk Assessment (ERA) tools may vary from country to country, the assurance of quality and the direction of ecotoxicological research are universally recognized as shared concerns. Drawing on a multidisciplinary team of contributors, 'Ecotoxicology of Explosives' provides comprehensive and critical reviews available to date on fate, transport, and effects of explosives. The book delineates the state of the science of the ecotoxicology of explosives, past, present, and recently developed. It reviews the accessible fate and ecotoxicological data for energetic materials (EMs) and the methods for their development. The chapters characterize the fate of explosives in the environment, then provide information on their ecological effects in key environmental media, including aquatic, sedimentary, and terrestrial habitats. The book also discusses approaches for assembling these lines of evidence for risk assessment purposes. The chapter authors have critically examined the peer-reviewed literature to identify and prioritize the knowledge gaps and to recommend future areas of research. The editors include a review of the genotoxic effects of the EMs and the cellular and molecular mechanisms underlying the toxicity of these chemicals. They also discuss the transport, transformation, and degradation pathways of these chemicals in the environment that underlie the potential hazardous impact and bioaccumulation of EMs in different terrestrial and aquatic ecological receptors. This information translates into practical applications for the environmental risk assessment of EM-contaminated sites and into recommendations for the sustainable use of defense installations.

  15. Explosive vaporization in microenclosures

    Microsoft Academic Search

    G. Romera-Guereca; J. Lichtenberg; A. Hierlemann; D. Poulikakos; B. Kang

    2006-01-01

    The explosive vaporization of a liquid above planar microheaters induces a fast increase of pressure that is exploited in many thermally driven actuators in MEMS components such as ink jet printer cartridges, pumps, valves and optical switches. Some of these components need to enclose the working fluid as it is the case of valves in which the heated liquid is

  16. CBC: Halifax Explosion

    NSDL National Science Digital Library

    In the evening of December 6, 1917, a massive explosion rocked the harbor of the rapidly growing city of Halifax, Nova Scotia, located in eastern Canada. Caused by the collision of two ships (one of which was carrying a tremendous amount of explosive material), the explosion killed over 1500 people outright, and devastated the settlements around the area. Working with various historical groups, the Canadian Broadcasting Corporation has created this engrossing multimedia look into the events leading up to that dreadful incident, along with offering a broader historical perspective on the development of the city of Halifax and the aftermath of these tragic events. Starting from the main page, visitors will learn about Halifax's history, along with having the opportunity to view significant interactive features, such as maps of the area and recently-discovered archival footage of the city and its environs. The interactive features here are quite amazing, as visitors can view video clips of survivors' recollections, and watch footage of various commemoration activities associated with the explosion.

  17. Technical and economic evaluation of selected compact drill rigs for drilling 10,000 foot geothermal production wells

    SciTech Connect

    Huttrer, G.W. [Geothermal Management Company, Inc., Frisco, CO (United States)

    1997-11-01

    This report summarizes the investigation and evaluation of several {open_quotes}compact{close_quotes} drill rigs which could be used for drilling geothermal production wells. Use of these smaller rigs would save money by reducing mobilization costs, fuel consumption, crew sizes, and environmental impact. Advantages and disadvantages of currently-manufactured rigs are identified, and desirable characteristics for the {open_quotes}ideal{close_quotes} compact rig are defined. The report includes a detailed cost estimate of a specific rig, and an evaluation of the cost/benefit ratio of using this rig. Industry contacts for further information are given.

  18. Airborne remote sensing for Deepwater Horizon oil spill emergency response

    Microsoft Academic Search

    Robert T. Kroutil; Sylvia S. Shen; Paul E. Lewis; David P. Miller; John Cardarelli; Mark Thomas; Timothy Curry; Paul Kudaraskus

    2010-01-01

    On April 28, 2010, the Environmental Protection Agency's (EPA) Airborne Spectral Photometric Environmental Collection Technology (ASPECT) aircraft was deployed to Gulfport, Mississippi to provide airborne remotely sensed air monitoring and situational awareness data and products in response to the Deepwater Horizon oil rig disaster. The ASPECT aircraft was released from service on August 9, 2010 after having flown over 75

  19. Charge accumulation in an oil tank during loading operations

    Microsoft Academic Search

    Yoshiyuki Matsubara; Sanae Matsushima; Thomas B. Jones

    1997-01-01

    Charge accumulation and relaxation of kerosene have been investigated in a full-sized, 100 kiloliter test rig during pumping operations. Two different experiments were conducted. First, measurements were made as a constant volume of oil was circulated through the tank via a recirculation loop. The first experiment, while not operationally realistic, permitted a simplified test of the charge relaxation model under

  20. Safe explosives for shaped charges

    Microsoft Academic Search

    K. J. Scribner; J. O. Davis

    1977-01-01

    It was demonstrated that high-performance shaped charges could be developed using as the explosive charge mixtures of ingredients that are not, by themselves, considered explosives. At least one of the ingredients needed to be a liquid, stored separately, that could be quickly injected into the shaped charge cavity to generate the active explosive. Precision copper shaped charge cones in diameters

  1. LSP EXPLOSIVE PACKAGES FRAGMENTATION STUDY

    E-print Network

    Rathbun, Julie A.

    ATM 1046 LSP EXPLOSIVE PACKAGES FRAGMENTATION STUDY Prepared by: ,11. 15. :n-~ G. B. Min Approved considerations the probability of fragments from an LSP explosive package striking the ALSEP Central Station Experiment requires that Explosive Charges be detonated on the luoar surface early in the ALSEP lunar mission

  2. EXPLOSIONS AND ARBITRAGE IOANNIS KARATZAS

    E-print Network

    Columbia University

    EXPLOSIONS AND ARBITRAGE IOANNIS KARATZAS Abstract The Feller and Khas'minskii tests provide conditions, under which a given dif- fusion process X(·) in a domain D can have explosions. If such explosions happen with positive probability, what is the distribution F(t, x) = Px(S t) , 0

  3. Gas Explosion Characterization, Wave Propagation

    E-print Network

    s & Dt^boooo^j Risø-R-525 Gas Explosion Characterization, Wave Propagation (Small-Scale Experiments EXPLOSION CHARACTERIZATION, WAVE PROPAGATION (Small-Scale Experiments) G.C. Larsen Abstract. A number; EXPLOSIONS; HOMOGENEOUS MIXTURES; METHANE; NITROGEN; OXYGEN; PRESSURE MEASUREMENT; REFLECTION; SIMULATION

  4. Hand held explosives detection system

    DOEpatents

    Conrad, Frank J. (Albuquerque, NM)

    1992-01-01

    The present invention is directed to a sensitive hand-held explosives detection device capable of detecting the presence of extremely low quantities of high explosives molecules, and which is applicable to sampling vapors from personnel, baggage, cargo, etc., as part of an explosives detection system.

  5. New explosive seam welding concepts

    NASA Technical Reports Server (NTRS)

    Bement, L. J.

    1973-01-01

    Recently developed techniques provide totally-confined linear explosive seam welding and produce scarf joint with linear explosive seam welding. Linear ribbon explosives are utilized in making narrow, continuous, airtight joints in variety of aluminum alloys, titanium, copper, brass, and stainless steel.

  6. Big Explosives Experimental Facility - BEEF

    ScienceCinema

    None

    2015-01-07

    The Big Explosives Experimental Facility or BEEF is a ten acre fenced high explosive testing facility that provides data to support stockpile stewardship and other national security programs. At BEEF conventional high explosives experiments are safely conducted providing sophisticated diagnostics such as high speed optics and x-ray radiography.

  7. Big Explosives Experimental Facility - BEEF

    SciTech Connect

    None

    2014-10-31

    The Big Explosives Experimental Facility or BEEF is a ten acre fenced high explosive testing facility that provides data to support stockpile stewardship and other national security programs. At BEEF conventional high explosives experiments are safely conducted providing sophisticated diagnostics such as high speed optics and x-ray radiography.

  8. Explosive performance measurements on large, multiple-hole arrays and large masses of conventional explosive

    SciTech Connect

    McKown, T.O. [Los Alamos National Lab., NM (United States); Eilers, D.D. [Raytheon Services Nevada, Las Vegas, NV (United States); Williams, P.E. [New Mexico Tech., Socorro, New Mexico (United States). Energetic Materials Research and Testing Center

    1994-11-01

    The COntinuous Reflectometry for Radius vs. Time EXperiment (CORRTEX) system was developed by the Los Alamos National Laboratory for determining the energy released in a nuclear explosion by measuring the position of its shock front as a function of time. The CORRTEX system, fielding techniques, and the methods and software for data reduction and analysis were developed over a 15 year period with hundreds of measurements made on nuclear tests and high explosive experiments. CORRTEX is a compact, portable, fast-sampling, microprocessor-controlled system, based on time domain reflectometry, requiring only a 24 volt power source and a sensing element. Only the sensing element (a length of 50 ohm coaxial cable) is expended during the detonation. In 1979, the CORRTEX system was shown to be ideally suited for chemical explosive performance measurements. Its utility for diagnosing chemical explosives was further demonstrated with successful measurements on large multiple-hole chemical shots in rock quarries and strip mines. Accurate timing of the detonation of sequenced or ripple fired arrays, as well as data characterizing the initiation, explosive performance and detonation anomalies are obtained. This information can serve as the basis for empirical or modeled improvements to blasting operations. A summary of the special CORRTEX features and well developed analysis techniques together with the experiment designs, data, and conclusions regarding the measurements and explosive performance from several array detonations and the Chemical Kiloton Experiment, 2.9 million pounds of an ammonium nitrate-fuel oil (ANFO) and emulsion blend conducted on the Nevada Test Site in 1993, are presented.

  9. Disc brake squeal characterization through simplified test rigs

    NASA Astrophysics Data System (ADS)

    Akay, A.; Giannini, O.; Massi, F.; Sestieri, A.

    2009-11-01

    This paper presents a review of recent investigations on brake squeal noise carried out on simplified experimental rigs. The common theme of these works is that of approaching the study of squeal noise on experimental set-ups that are much simpler than commercial disc brakes, providing the possibility of repeatable measurements of squeal occurrence. As a consequence, it is possible to build consistent and robust models of the experimental apparatus to simulate the squeal events and to understand the physics behind squeal instabilities.

  10. Burner rig hot corrosion of silicon carbide and silicon nitride

    NASA Technical Reports Server (NTRS)

    Fox, Dennis S.; Smialek, James L.

    1990-01-01

    A number of commercially available SiC and Si3N4 materials were exposed to 1000 C for 40 h in a high-velocity, pressurized burner rig as a simulation of an aircraft turbine environment. Na impurities (2 ppm) added to the burner flame resulted in molten Na2SO4 deposition, attack of the SiC and Si3N4, and formation of substantial Na2O+x(SiO2) corrosion product. Room-temperature strength of the materials decreased as a result of the formation of corrosion pits in SiC and grain-boundary dissolution and pitting in Si3N4.

  11. Rig safety depends on equipment, regulations, and personnel

    SciTech Connect

    Bates, T.R. Jr.; Tait, S. (Sedco Forex, Aberdeen (GB)); Mumford, G. (Sedco Forex, Montrouge (FR))

    1990-03-05

    The authors discuss how improvements that can increase rig safety can be made in equipment, regulations, and stabilized personnel levels. With regard to equipment, exposure to material handling must be reduced through automation, and well-control technology must be improved by enhanced use of computers and better systems to handle gas. According to this analysis, regulations are needed that are global in scope and have had their costs-to-benefits fully and fairly assessed. Self regulation must be used effectively throughout the industry. Job security and wages should be made adequate to maintain an experienced, motivated, and safe work force.

  12. RIG-I ATPase Activity and Discrimination of Self-RNA versus Non-Self-RNA

    PubMed Central

    Anchisi, Stéphanie; Guerra, Jessica

    2015-01-01

    ABSTRACT Many RNA viruses are detected by retinoic acid-inducible gene i (RIG-I), a cytoplasmic sensor that triggers an antiviral response upon binding non-self-RNA that contains a stretch of double-stranded RNA (dsRNA) bearing a base-paired 5? ppp nucleotide. To gain insight into how RIG-I discriminates between self-RNA and non-self-RNA, we used duplexes whose complementary bottom strand contained both ribo- and deoxynucleotides. These duplexes were examined for their binding to RIG-I and their relative abilities to stimulate ATPase activity, to induce RIG-I dimerization on the duplex, and to induce beta interferon (IFN-?) expression. We show that the chemical nature of the bottom strand is not critical for RIG-I binding. However, two key ribonucleotides, at positions 2 and 5 on the bottom strand, are minimally required for the RIG-I ATPase activity, which is necessary but not sufficient for IFN-? stimulation. We find that duplexes with shorter stretches of dsRNA, as model self-RNAs, bind less stably to RIG-I but nevertheless have an enhanced ability to stimulate the ATPase. Moreover, ATPase activity promotes RIG-I recycling on RIG-I/dsRNA complexes. Since pseudo-self-RNAs bind to RIG-I less stably, they are preferentially recycled by ATP hydrolysis that weakens the helicase domain binding of dsRNA. Our results suggest that one function of the ATPase is to restrict RIG-I signaling to its interaction with non-self-RNA. A model of how this discrimination occurs as a function of dsRNA length is presented. PMID:25736886

  13. Automatic detection and tracking of pedestrians from a moving stereo rig

    E-print Network

    Schindler, Konrad

    inner-city scenarios are presented, in which the system achieves promising results. Keywords: 1 submitted to IJPRS July 19, 2010 #12;(a) CharioBot (b) CharioBot II (c) SmartTer Figure 1: Recording platforms used in this work. (a), (b) stereo rig mounted on child strollers. (c) stereo rig mounted on Smart

  14. Development of a demonstration rig for providing primary frequency response through smart meters

    Microsoft Academic Search

    W. M. T. Vijayananda; Kamalanath Samarakoon; Janaka Ekanayake

    2010-01-01

    A development of a rig that demonstrates a load control scheme which provides primary frequency response is reported. The rig uses a commercially available smart meter and remotely controlled smart sockets. A load controller implemented in a computer sends control signals to switch smart sockets on and off. The meter communicates with the computer using Modbus protocol through RS485 -

  15. Structural Basis of Viral RNA Recognition by RIG-I-Like Receptors

    E-print Network

    Lu, Cheng

    2012-10-19

    dsRNA with and without 5'-triphosphate (5'-ppp) groups, and 5'-ppp ssRNA. RIG-I CTD binds to these forms of RNA, and exhibits the highest affinity for 5'-ppp dsRNA. We also determined the crystal structures of RIG-I CTD in complex with ds...

  16. The rigged Hilbert space of the algebra of the one-dimensional rectangular barrier potential

    NASA Astrophysics Data System (ADS)

    de la Madrid, Rafael

    2004-08-01

    The rigged Hilbert space of the algebra of the one-dimensional rectangular barrier potential is constructed. The one-dimensional rectangular potential provides another opportunity to show that the rigged Hilbert space fully accounts for Dirac's bra-ket formalism. The analogy between Dirac's formalism and Fourier methods is pointed out.

  17. Finite element calculation of fields around the end region of a turbine generator test rig

    Microsoft Academic Search

    J. F. Eastham; D. Rodger; H. C. Lai; H. Nouri

    1993-01-01

    The use of surface impedance elements and the use of volume elements when modeling at test rig using the MEGA package are compared. The test rig is representative of a turbine generator. The work is supported by practical measurements. Experimental results indicate that it is possible to model 3-D fields in large-scale objects containing nonlinear conducting iron using finite elements.

  18. A Sense of Self: RIG-I's Tolerance to Host RNA.

    PubMed

    Schoggins, John W

    2015-07-21

    The innate immune sensor RIG-I recognizes viral RNA while avoiding unwanted activation by self RNA. In this issue of Immunity, Schuberth-Wagner et al. (2015) show that a histidine residue in the RNA binding pocket of RIG-I sterically excludes the cap1 structure of self RNA, thereby preventing downstream activation. PMID:26200004

  19. Nanosecond resolution of .E, .H and .I in aircraft lightning test rigs

    Microsoft Academic Search

    B. J. C. Burrows

    1983-01-01

    Many designs of test rig have emerged in recent years incorporating hardwired connections and design incorporating series open arcs at each end of the aircraft. Important characteristics of the test rigs are not specified, but these characteristics control the generation of large (and usually HF) transients through the fast coupling processes. Both lumped element and distributed element representation of these

  20. Defining the functional determinants for RNA surveillance by RIG-I

    PubMed Central

    Kohlway, Andrew; Luo, Dahai; Rawling, David C; Ding, Steve C; Pyle, Anna Marie

    2013-01-01

    Retinoic acid-inducible gene-I (RIG-I) is an intracellular RNA sensor that activates the innate immune machinery in response to infection by RNA viruses. Here, we report the crystal structure of distinct conformations of a RIG-I:dsRNA complex, which shows that HEL2i-mediated scanning allows RIG-I to sense the length of RNA targets. To understand the implications of HEL2i scanning for catalytic activity and signalling by RIG-I, we examined its ATPase activity when stimulated by duplex RNAs of varying lengths and 5? composition. We identified a minimal RNA duplex that binds one RIG-I molecule, stimulates robust ATPase activity, and elicits a RIG-I-mediated interferon response in cells. Our results reveal that the minimal functional unit of the RIG-I:RNA complex is a monomer that binds at the terminus of a duplex RNA substrate. This behaviour is markedly different from the RIG-I paralog melanoma differentiation-associated gene 5 (MDA5), which forms cooperative filaments. PMID:23897087

  1. Department of Mechanical Engineering Dresser-Rand 1: LNG Test Rig Movable LSD Vanes

    E-print Network

    Demirel, Melik C.

    PENNSTATE Department of Mechanical Engineering Fall 2011 Dresser-Rand 1: LNG Test Rig Movable LSD (LSD) vanes which can easily be incorporated into current test rigs for centrifugal gas compressors of the system Approach Our team started the project by doing an extensive study on LSD vanes and current

  2. Department of Mechanical Engineering Spring 2012 LNG Test Rig Movable LSD Vanes

    E-print Network

    Demirel, Melik C.

    PENNSTATE Department of Mechanical Engineering Spring 2012 LNG Test Rig Movable LSD Vanes Overview (LSD) vanes are used to smoothly align the flow and minimize the losses. These vanes are fixed a diffuser with movable LSD vanes that can be incorporated into test rigs for centrifugal gas compressors

  3. Explosive welding of pipes

    Microsoft Academic Search

    O. Drennov; O. Burtseva; A. Kitin

    2006-01-01

    For connection by welding it is suggested to use the explosive welding method. This method is rather new. Nevertheless, it has become commonly used among the technological developments. This method can be advantageous (saving material and physical resources) comparing to its statical analogs (electron-beam welding, argon-arc welding, plasma welding, gas welding, etc.), in particular, in hard-to-reach areas due to their

  4. Explosive Welding of Pipes

    Microsoft Academic Search

    Olga Burtseva

    2007-01-01

    For connection by welding it is suggested to use the explosive welding method. This method is rather new. Nevertheless, it has become commonly used among the technological developments. This method can be advantageous (saving material and physical resources) comparing to its statical analogs (electron-beam welding, argon-arc welding, plasma welding, gas welding, etc.), in particular, in hard-to-reach areas due to their

  5. RIG-I-Mediated Antiviral Signaling Is Inhibited in HIV-1 Infection by a Protease-Mediated Sequestration of RIG-I?

    PubMed Central

    Solis, Mayra; Nakhaei, Peyman; Jalalirad, Mohammad; Lacoste, Judith; Douville, Renée; Arguello, Meztli; Zhao, Tiejun; Laughrea, Michael; Wainberg, Mark A.; Hiscott, John

    2011-01-01

    The rapid induction of type I interferon (IFN) is essential for establishing innate antiviral responses. During infection, cytoplasmic viral RNA is sensed by two DExD/H box RNA helicases, RIG-I and MDA5, ultimately driving IFN production. Here, we demonstrate that purified genomic RNA from HIV-1 induces a RIG-I-dependent type I IFN response. Both the dimeric and monomeric forms of HIV-1 were sensed by RIG-I, but not MDA5, with monomeric RNA, usually found in defective HIV-1 particles, acting as a better inducer of IFN than dimeric RNA. However, despite the presence of HIV-1 RNA in the de novo infection of monocyte-derived macrophages, HIV-1 replication did not lead to a substantial induction of IFN signaling. We demonstrate the existence of an evasion mechanism based on the inhibition of the RIG-I sensor through the action of the HIV-1 protease (PR). Indeed, the ectopic expression of PR resulted in the inhibition of IFN regulatory factor 3 (IRF-3) phosphorylation and decreased expression of IFN and interferon-stimulated genes. A downregulation of cytoplasmic RIG-I levels occurred in cells undergoing a single-cycle infection with wild-type provirus BH10 but not in cells transfected with a protease-deficient provirus, BH10-PR?. Cellular fractionation and confocal microscopy studies revealed that RIG-I translocated from the cytosol to an insoluble fraction during the de novo HIV-1 infection of monocyte-derived macrophages, in the presence of PR. The loss of cytoplasmic RIG-I was prevented by the lysosomal inhibitor E64, suggesting that PR targets RIG-I to the lysosomes. This study reveals a novel PR-dependent mechanism employed by HIV-1 to counteract the early IFN response to viral RNA in infected cells. PMID:21084468

  6. Explosive Welding of Pipes

    NASA Astrophysics Data System (ADS)

    Drennov, Oleg; Drennov, Andrey; Burtseva, Olga

    2013-06-01

    For connection by welding it is suggested to use the explosive welding method. This method is rather new. Nevertheless, it has become commonly used among the technological developments. This method can be advantageous (saving material and physical resources) comparing to its statical analogs (electron-beam welding, argon-arc welding, plasma welding, gas welding, etc.), in particular, in hard-to-reach areas due to their geographic and climatic conditions. Explosive welding of cylindrical surfaces is performed by launching of welded layer along longitudinal axis of construction. During this procedure, it is required to provide reliable resistance against radial convergent strains. The traditional method is application of fillers of pipe cavity, which are dense cylindrical objects having special designs. However, when connecting pipes consecutively in pipelines by explosive welding, removal of the fillers becomes difficult and sometimes impossible. The suggestion is to use water as filler. The principle of non-compressibility of liquid under quasi-dynamic loading is used. In one-dimensional gasdynamic and elastic-plastic calculations we determined non-deformed mass of water (perturbations, which are moving in the axial direction with sound velocity, should not reach the layer end boundaries for 5-7 circulations of shock waves in the radial direction). Linear dimension of the water layer from the zone of pipe coupling along axis in each direction is >= 2R, where R is the internal radius of pipe.

  7. Adhesion of explosives.

    PubMed

    Chaffee-Cipich, Michelle N; Sturtevant, Bryce D; Beaudoin, Stephen P

    2013-06-01

    It is of increasing importance to understand how explosive particles adhere to surfaces in order to understand how to remove them for detection in airport or other security settings. In this study, adhesion forces between royal demolition explosive (cyclotrimethylenetrinitramine) (RDX), pentaerythritol tetranitrate (PETN), and trinitrotoluene (TNT) in their crystalline forms and aluminum coupons with three finishes, acrylic melamine (clear coating), polyester acrylic melamine (white coating) automotive finishes, and a green military-grade finish, were measured and modeled. The force measurements were performed using the atomic force microscopy (AFM)-based colloidal probe microscopy (CPM) method. Explosive particles were mounted on AFM cantilevers and repeatedly brought in and out of contact with the surfaces of interest while the required force needed to pull out of contact was recorded. An existing Matlab-based simulator was used to describe the observed adhesion force distributions, with excellent agreement. In these simulations, the measured topographies of the interacting surfaces were considered, although the geometries were approximated. The simulations were performed using a van der Waals force-based adhesion model and a composite effective Hamaker constant. It was determined that certain combinations of roughness on the interacting surfaces led to preferred particle-substrate orientations that produced extreme adhesion forces. PMID:23510004

  8. Explosives signatures and analysis

    NASA Astrophysics Data System (ADS)

    Fountain, Augustus Way, III; Oyler, Jonathan M.; Ostazeski, Stanley A.

    2008-04-01

    The challenge of sampling explosive materials for various high threat military and civilian operational scenarios requires the community to identify and exploit other chemical compounds within the mixtures that may be available to support stand-off detection techniques. While limited surface and vapor phase characterization of IEDs exist, they are insufficient to guide the future development and evaluation of field deployable explosives detection (proximity and standoff) capabilities. ECBC has conducted a limited investigation of three artillery ammunition types to determine what chemical vapors, if any, are available for sensing; the relative composition of the vapors which includes the more volatile compounds in munitions, i.e., plastersizers and binders; and the sensitivity needed detect these vapors at stand-off. Also in partnership with MIT-Lincoln Laboratory, we performed a background measurement campaign at the National Training Center to determine the baseline ambient amounts and variability of nitrates and nitro-ester compounds as vapors, particulates, and on surfaces; as well as other chemical compounds related to non-energetic explosive additives. Environmental persistence studies in contexts relevant to counter-IED sensing operations, such as surface residues, are still necessary.

  9. Effect of explosion pressure on pipe collapse in chemical plants

    SciTech Connect

    Kurashiki, Tetsusei; Zako, Masaru [Osaka Univ., Suita, Osaka (Japan). Dept. of Welding and Production Engineering

    1995-12-31

    Once a big earthquake attacks the chemical plant and tanks are broken, the disaster will extend due to the dangerous materials in tanks. In addition, the destructive explosion pressure leads to the collapse of pipes, structures and missiles from these broken pieces. Therefore, simulating the disasters in chemical plants is very important for the safety and the reliability evaluation. In this study, a computer program to analyze the behavior of pipe and chemical equipment under explosion pressure on a personal computer has been developed. The outline of the algorithm is as follows: (1) Three-dimensional pressure applied on pipes at the explosion is calculated. (2) The effect of interception of explosion pressure by oil dike is quantified. (3) Mechanical behavior of pipe is analyzed by FEM using beam element, and pipe collapse is evaluated from the result of FEM. (4) Cumulative damage caused by sequential explosion of tanks is calculated. As an example, the developed system was applied to practical plant model, and the damaged zone in the plant and the dangerous location of pipes after the explosion of a tank have been analyzed. As a result, it is revealed that the proposed computer program is very useful not only for safety and reliability evaluation but for the installation of pipes in chemical plants as well.

  10. Nanosecond resolution of .E, .H and .I in aircraft lightning test rigs

    NASA Astrophysics Data System (ADS)

    Burrows, B. J. C.

    1983-06-01

    Many designs of test rig have emerged in recent years incorporating hardwired connections and design incorporating series open arcs at each end of the aircraft. Important characteristics of the test rigs are not specified, but these characteristics control the generation of large (and usually HF) transients through the fast coupling processes. Both lumped element and distributed element representation of these test rigs and the capacitor banks driving them are given, and the effects of parameter and geometry variations are highlighted. It is shown that quantitative analysis of fast transients (dot-D, dot-B) requires much closer specification of the test rig performance including switch closure time, capacitor bank and connecting line inductance, and the transmission line impedance of the test rig. Tests on the Fly-by-Wire Jaguar at Warton near Preston in England showed the need for developing a quantitative relationship between HF transients and the fast coupling processes.

  11. Friction and wear of tribofilms formed by zinc dialkyl dithiophosphate antiwear additive in low viscosity engine oils

    Microsoft Academic Search

    J. S. McQueen; H. Gao; E. D. Black; A. K. Gangopadhyay; R. K. Jensen

    2005-01-01

    Friction and wear characteristics of low viscosity SAE 5W-20 engine oils containing different amounts of phosphorus were studied using two different test devices. One was a laboratory high frequency reciprocating rig (HFRR) testing new and used oils at low and elevated temperatures. A direct acting mechanical bucket (DAMB) sliding valvetrain bench test apparatus was used to measure the friction and

  12. Monitoring of Oil Spills in the North Caspian Sea using SAR Imagery and MultiSensor Satellite Data

    Microsoft Academic Search

    Konstantin Litovchenko; Andrei Ivanov

    2008-01-01

    Since may 2007 the regular operational satellite monitoring of the north Caspian sea was set up and carried out. The purpose of the project is to monitor the ecological situation (namely, oil spills) particularly around the oil-rig offshore exploration platforms operating in Russian and Kazakhstan sectors, as well in the overall area of the North Caspian sea. The used data

  13. Characterization of commercial, composite explosives. [ANFO, DBA65-T2, POURVEX, EL836, UNIGL, TELEDET, AQUANAL, RX30, RX31

    Microsoft Academic Search

    M. Finger; F. Helm; E. Lee; R. Boat; H. Cheung; J. Walton; B. Hayes; L. Penn

    1976-01-01

    The explosive performance of a number of commercial blasting agents was investigated. EOS detonation parameters for a typical dynamite, aluminized and non-aluminized blasting agents, and ammonium nitrate\\/fuel oil (ANFO) were determined. The investigation also included nitromethane\\/oxidizer systems including several with aluminum. The time dependent properties in the detonation of several of these explosive materials were investigated. For some explosives the

  14. PS300 Tribomaterials Evaluated at 6500C by Bushing Test Rig

    NASA Technical Reports Server (NTRS)

    Striebing, Donald R.; DellaCorte, Christopher

    2004-01-01

    A new facility has been developed to test the tribological behavior (friction and wear) of PS300 solid lubricant bushings at high temperatures. PS300 is a commercially available solid lubricant invented at the NASA Glenn Research Center. It can be prepared as a plasma spray coating or as a free-standing powder metallurgy component, designated PM300. PS300 and PM300 composites are designed to lubricate sliding components at temperatures above the capability of today's best oils, greases, and solid lubricants. One of the primary applications being pursued for PM300 is the development of bushings for use in high-temperature machinery. Examples include inlet guide vane bushings for gas turbines and conveyors, and bearings for industrial furnaces and ovens. Encouraging preliminary field trials indicate that PS300 and PM300 lubricant materials have been commercialized successfully in several industrial applications. However, the lack of laboratory performance data has hindered further commercialization especially for new applications that differ significantly from the established experience base. The purpose of the newly developed bushing test rig will be to determine the performance characteristics of PM300, and other materials, under conditions closely matching intended applications. The data will be used to determine engineering friction and wear rates and to estimate the life expectancy of bushings for new applications. In the new rig, the bushing is loaded against a rotating shaft inside a furnace enclosure (see the preceding photograph). Loads can vary from 5 to 200 N, speeds from 1 to 400 rpm, and temperatures from 25 to 800 C. Furnace temperature, bushing temperature, shaft speed, and torque are monitored during the test, and wear of both the bushing and the shaft is measured after testing is completed. Initially, PM300 bushings will be evaluated and compared with lower temperature, traditional bushing materials like graphite and porous bronze. The baseline PM304 composition is 60 wt% NiCr (a binder), 20 wt% Cr2O3 (a hardener), 10 wt% BaF2/CaF2 (a high-temperature lubricant), and 10 wt% Ag (a low-temperature lubricant). Future research efforts will include determining the effects of load, sliding speed, and temperature on tribological performance and, possibly, tailoring composition for specific applications. We expect that the availability of measured performance data will enhance the market penetration of PM300 technology.

  15. 77 FR 10481 - Incidental Taking of Marine Mammals; Taking of Marine Mammals Incidental to the Explosive Removal...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-22

    ...to the explosive removal of offshore oil and gas structures (EROS...NMFS Galveston Laboratory's Platform Removal Observer Program...reports for ERT removal of offshore structures during 2011. Demex...dolphins (14) None. 100, Platform C....

  16. 77 FR 45341 - Incidental Taking of Marine Mammals; Taking of Marine Mammals Incidental to the Explosive Removal...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-31

    ...to the explosive removal of offshore oil and gas structures (EROS...NMFS Galveston Laboratory's Platform Removal Observer Program...for EOG Resources removal of offshore structures during 2011. NMFS...2011. dolphins (88). Platform B. July 31 to August 2,...

  17. 76 FR 12070 - Incidental Taking of Marine Mammals; Taking of Marine Mammals Incidental to the Explosive Removal...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-04

    ...to the explosive removal of offshore oil and gas structures (EROS...NMFS Galveston Laboratory's Platform Removal Observer Program...Noble Energy's removal of offshore structures during 2010. Demex...2010. dolphins (22), Platform JA. Spotted dolphins...

  18. 78 FR 13865 - Incidental Taking of Marine Mammals; Taking of Marine Mammals Incidental to the Explosive Removal...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-01

    ...to the explosive removal of offshore oil and gas structures (EROS...NMFS Galveston Laboratory's Platform Removal Observer Program...reports for ERT's removal of offshore structures during 2012. Demex...Area, Block 15, (99). Platform A....

  19. 76 FR 33704 - Incidental Taking of Marine Mammals; Taking of Marine Mammals Incidental to the Explosive Removal...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-06-09

    ...to the explosive removal of offshore oil and gas structures (EROS...NMFS Galveston Laboratory's Platform Removal Observer Program...and EOG Resources removal of offshore structures in 2010. NMFS PROP...None. Block 278, 2010. Platform A. El...

  20. Formulation of lower phosphorus passenger car oils

    SciTech Connect

    Burrows, A.L.; Korosec, P.S.; Malfer, D.J.; Yatsunami, K.

    1986-01-01

    This paper describes the results of a research program to evaluate the effect of lowering zinc dithiophosphate (ZDDP) content on engine oil performance. The automative industry is concerned that engine oil composition may have an adverse effect on exhaust catalytic converter efficiency and has therefore called for more research to develop engine oils that will promote catlyst/engine oil compatibility. An apparently simple solution is to reduce ZDDP content to a level that allows satisfactory catalyst efficiency. The effects of lowering the ZDDP content have been evaluated in terms of wear, oxidation and bearing corrosion performance. It has been demonstrated that in laboratory engines and rig tests by quantifying the influence of lubricant composition on performance, engine oils can be formulated at lower phosphorous levels (0.08% wt) to meet the performance needs of modern passenger cars in the United States, Europe and Japan.

  1. 77 FR 16539 - Incidental Taking of Marine Mammals; Taking of Marine Mammals Incidental to the Explosive Removal...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-21

    ...Marine Mammals; Taking of Marine Mammals Incidental to the Explosive Removal of Offshore Structures in the Gulf of Mexico AGENCY...issued one-year LOAs to take marine mammals incidental to the explosive removal of offshore oil and gas structures (EROS) in...

  2. 78 FR 22517 - Incidental Taking of Marine Mammals; Taking of Marine Mammals Incidental to the Explosive Removal...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-16

    ...Marine Mammals; Taking of Marine Mammals Incidental to the Explosive Removal of Offshore Structures in the Gulf of Mexico AGENCY...NMFS has issued LOAs to take marine mammals incidental to the explosive removal of offshore oil and gas structures (EROS) in...

  3. Linear accelerator for explosive detection

    Microsoft Academic Search

    K. Whitham; R. C. Miller; H. Anamkath; J. R. Clifford; R. B. Miller; K. Habiger

    1991-01-01

    A 14 MeV, S-band linear accelerator has been designed and built by Beta Development for use in the MIDEP explosive detection program at Titan\\/Spectron Division. The explosive detection technique utilizes photoneutron activation of the nitrogen which is an integral component in most commercial and military explosives. The accelerator was designed to be a small, high power, light weight, and portable

  4. Explosives solve downhole problems

    SciTech Connect

    Defrank, P.

    1981-11-01

    Shaped charges were first used more than 30 years ago to perforate casing, cement sheath and reservoir to provide selective communication between the reservoir and well bore. Since then, advances have been made in design of shaped charge sand ancillary equipment. Penetration has increased considerably. Miniaturization of equipment allows passing through relatively small restrictions and effectively communicating with reservoirs. Gun debris has been drastically reduced and in some designs eliminated. Deep reservoirs can be effectively penetrated under down-hole environments exceeding 500 F and 20,000 psi. This work covers the problems encountered and reviews successful devices employing shaped charge and explosive technology.

  5. Explosive turbulent magnetic reconnection.

    PubMed

    Higashimori, K; Yokoi, N; Hoshino, M

    2013-06-21

    We report simulation results for turbulent magnetic reconnection obtained using a newly developed Reynolds-averaged magnetohydrodynamics model. We find that the initial Harris current sheet develops in three ways, depending on the strength of turbulence: laminar reconnection, turbulent reconnection, and turbulent diffusion. The turbulent reconnection explosively converts the magnetic field energy into both kinetic and thermal energy of plasmas, and generates open fast reconnection jets. This fast turbulent reconnection is achieved by the localization of turbulent diffusion. Additionally, localized structure forms through the interaction of the mean field and turbulence. PMID:23829741

  6. Explosive Turbulent Magnetic Reconnection

    NASA Astrophysics Data System (ADS)

    Higashimori, K.; Yokoi, N.; Hoshino, M.

    2013-06-01

    We report simulation results for turbulent magnetic reconnection obtained using a newly developed Reynolds-averaged magnetohydrodynamics model. We find that the initial Harris current sheet develops in three ways, depending on the strength of turbulence: laminar reconnection, turbulent reconnection, and turbulent diffusion. The turbulent reconnection explosively converts the magnetic field energy into both kinetic and thermal energy of plasmas, and generates open fast reconnection jets. This fast turbulent reconnection is achieved by the localization of turbulent diffusion. Additionally, localized structure forms through the interaction of the mean field and turbulence.

  7. Advances in measuring techniques for turbine cooling test rigs

    NASA Technical Reports Server (NTRS)

    Pollack, F. G.

    1972-01-01

    Surface temperature distribution measurements for turbine vanes and blades were obtained by measuring the infrared energy emitted by the airfoil. The IR distribution can be related to temperature distribution by suitable calibration methods and the data presented in the form of isotherm maps. Both IR photographic and real time electro-optical methods are being investigated. The methods can be adapted to rotating as well as stationary targets, and both methods can utilize computer processing. Pressure measurements on rotating components are made with a rotating system incorporating 10 miniature transducers. A mercury wetted slip ring assembly was used to supply excitation power and as a signal transfer device. The system was successfully tested up to speeds of 9000 rpm and is now being adapted to measure rotating blade airflow quantities in a spin rig and a research engine.

  8. The NASA high pressure facility and turbine test rig

    NASA Technical Reports Server (NTRS)

    Stepka, F. S.

    1978-01-01

    NASA Lewis Research Center is presently constructing a test facility for developing turbine-cooling and combustor technology for future-generation aircraft gas-turbine engines. Prototype engine hardware will be investigated in this facility at gas-stream conditions up to 2480 K average turbine inlet temperature and 4.14 million N/sq m turbine inlet pressure. The facility will have the unique features of fully automated control and data acquisition through the use of an integrated system of minicomputers and programmable controllers, which will result in more effective use of operating time and operators and will provide a built-in self-protection safety system. The facility, turbine rig, and turbine-cooling test program are described.

  9. Modeling of explosion thermal radiation

    NASA Astrophysics Data System (ADS)

    Stepanov, K. L.; Stanchits, L. K.; Stankevich, Yu. A.

    2011-01-01

    The hydrodynamic and radiation processes accompanying explosions of chemical explosives and fuel-air mixtures have been considered. Computer modeling of the radiation from a fire ball of explosion and a flame of diffusion combustion of a hydrocarbon fuel has been performed. The dependences of the heat flux density from the region occupied by explosion and combustion products on its temperature and geometric characteristics have been determined. Thermal load distributions on targets of different orientations in the vicinity of the energy release zone have been obtained. A comparison of the thermal parameters on radiation detectors with the criteria of thermal affection of people and ignition of combustible materials has been made.

  10. Explosive scabbling of structural materials

    DOEpatents

    Bickes, Jr., Robert W. (Albuquerque, NM); Bonzon, Lloyd L. (Albuquerque, NM)

    2002-01-01

    A new approach to scabbling of surfaces of structural materials is disclosed. A layer of mildly energetic explosive composition is applied to the surface to be scabbled. The explosive composition is then detonated, rubbleizing the surface. Explosive compositions used must sustain a detonation front along the surface to which it is applied and conform closely to the surface being scabbled. Suitable explosive compositions exist which are stable under handling, easy to apply, easy to transport, have limited toxicity, and can be reliably detonated using conventional techniques.

  11. Low voltage nonprimary explosive detonator

    DOEpatents

    Dinegar, Robert H. (Los Alamos, NM); Kirkham, John (Newbury, GB2)

    1982-01-01

    A low voltage, electrically actuated, nonprimary explosive detonator is disclosed wherein said detonation is achieved by means of an explosive train in which a deflagration-to-detonation transition is made to occur. The explosive train is confined within a cylindrical body and positioned adjacent to low voltage ignition means have electrical leads extending outwardly from the cylindrical confining body. Application of a low voltage current to the electrical leads ignites a self-sustained deflagration in a donor portion of the explosive train which then is made to undergo a transition to detonation further down the train.

  12. Introduction Explosions in evolution problems Numerical approximations Adaptive numerical scheme Stochastic Differential Equations with explosions

    E-print Network

    Groisman, Pablo

    Introduction Explosions in evolution problems Numerical approximations Adaptive numerical scheme Stochastic Differential Equations with explosions Pablo Groisman University of Buenos Aires Joint work with J Stochastic Differential Equations with explosions #12;Introduction Explosions in evolution problems Numerical

  13. Telemedicine via satellite to support offshore oil platforms.

    PubMed

    Mair, Fiona; Fraser, Susan; Ferguson, James; Webster, Karyn

    2008-01-01

    On any one day, approximately 15,000-28,000 oil industry personnel are employed in the North Sea oil and gas industry. First aid in this remote environment is provided by non-medical staff on the rigs. Remote specialist advice via videoconferencing should improve the quality of offshore health care and reduce avoidable medical evacuations. Satellite communications and videoconferencing equipment was installed on the 'Alwyn North' oil platform, with medical advice provided via a call centre in Milan. Over a nine-month period, trial telemedicine links were conducted approximately twice per week. The three onshore physicians were very satisfied on each occasion with communications and diagnostic data image quality, including the ultrasound screening carried out by the rig provider. Remote specialist advice via videoconferencing should reduce unnecessary and/or untimely patient evacuation to hospital or onshore for medical assessment. PMID:18430278

  14. Oil Spill in the Gulf of Mexico - Landsat 7

    USGS Multimedia Gallery

    On April 20, 2010, an explosion at an oil well in the Gulf of Mexico resulted in a major oil spill. Since then, emergency response efforts have been underway to contain the growing oil slick before it reaches the southern coast of the United States. Landsat imagery, acquired by the U.S. Geological ...

  15. Antiviral immunity via RIG-I-mediated recognition of RNA bearing 5'-diphosphates.

    PubMed

    Goubau, Delphine; Schlee, Martin; Deddouche, Safia; Pruijssers, Andrea J; Zillinger, Thomas; Goldeck, Marion; Schuberth, Christine; Van der Veen, Annemarthe G; Fujimura, Tsutomu; Rehwinkel, Jan; Iskarpatyoti, Jason A; Barchet, Winfried; Ludwig, Janos; Dermody, Terence S; Hartmann, Gunther; Reis e Sousa, Caetano

    2014-10-16

    Mammalian cells possess mechanisms to detect and defend themselves from invading viruses. In the cytosol, the RIG-I-like receptors (RLRs), RIG-I (retinoic acid-inducible gene I; encoded by DDX58) and MDA5 (melanoma differentiation-associated gene 5; encoded by IFIH1) sense atypical RNAs associated with virus infection. Detection triggers a signalling cascade via the adaptor MAVS that culminates in the production of type I interferons (IFN-? and ?; hereafter IFN), which are key antiviral cytokines. RIG-I and MDA5 are activated by distinct viral RNA structures and much evidence indicates that RIG-I responds to RNAs bearing a triphosphate (ppp) moiety in conjunction with a blunt-ended, base-paired region at the 5'-end (reviewed in refs 1, 2, 3). Here we show that RIG-I also mediates antiviral responses to RNAs bearing 5'-diphosphates (5'pp). Genomes from mammalian reoviruses with 5'pp termini, 5'pp-RNA isolated from yeast L-A virus, and base-paired 5'pp-RNAs made by in vitro transcription or chemical synthesis, all bind to RIG-I and serve as RIG-I agonists. Furthermore, a RIG-I-dependent response to 5'pp-RNA is essential for controlling reovirus infection in cultured cells and in mice. Thus, the minimal determinant for RIG-I recognition is a base-paired RNA with 5'pp. Such RNAs are found in some viruses but not in uninfected cells, indicating that recognition of 5'pp-RNA, like that of 5'ppp-RNA, acts as a powerful means of self/non-self discrimination by the innate immune system. PMID:25119032

  16. Controlled by Distant Explosions

    NASA Astrophysics Data System (ADS)

    2007-03-01

    VLT Automatically Takes Detailed Spectra of Gamma-Ray Burst Afterglows Only Minutes After Discovery A time-series of high-resolution spectra in the optical and ultraviolet has twice been obtained just a few minutes after the detection of a gamma-ray bust explosion in a distant galaxy. The international team of astronomers responsible for these observations derived new conclusive evidence about the nature of the surroundings of these powerful explosions linked to the death of massive stars. At 11:08 pm on 17 April 2006, an alarm rang in the Control Room of ESO's Very Large Telescope on Paranal, Chile. Fortunately, it did not announce any catastrophe on the mountain, nor with one of the world's largest telescopes. Instead, it signalled the doom of a massive star, 9.3 billion light-years away, whose final scream of agony - a powerful burst of gamma rays - had been recorded by the Swift satellite only two minutes earlier. The alarm was triggered by the activation of the VLT Rapid Response Mode, a novel system that allows for robotic observations without any human intervention, except for the alignment of the spectrograph slit. ESO PR Photo 17a/07 ESO PR Photo 17a/07 Triggered by an Explosion Starting less than 10 minutes after the Swift detection, a series of spectra of increasing integration times (3, 5, 10, 20, 40 and 80 minutes) were taken with the Ultraviolet and Visual Echelle Spectrograph (UVES), mounted on Kueyen, the second Unit Telescope of the VLT. "With the Rapid Response Mode, the VLT is directly controlled by a distant explosion," said ESO astronomer Paul Vreeswijk, who requested the observations and is lead-author of the paper reporting the results. "All I really had to do, once I was informed of the gamma-ray burst detection, was to phone the staff astronomers at the Paranal Observatory, Stefano Bagnulo and Stan Stefl, to check that everything was fine." The first spectrum of this time series was the quickest ever taken of a gamma-ray burst afterglow, let alone with an instrument such as UVES, which is capable of splitting the afterglow light with uttermost precision. What is more, this amazing record was broken less than two months later by the same team. On 7 June 2006, the Rapid-Response Mode triggered UVES observations of the afterglow of an even more distant gamma-ray source a mere 7.5 minutes after its detection by the Swift satellite. Gamma-ray bursts are the most intense explosions in the Universe. They are also very brief. They randomly occur in galaxies in the distant Universe and, after the energetic gamma-ray emission has ceased, they radiate an afterglow flux at longer wavelengths (i.e. lower energies). They are classified as long and short bursts according to their duration and burst energetics, but hybrid bursts have also been discovered (see ESO PR 49/06). The scientific community agrees that gamma-ray bursts are associated with the formation of black holes, but the exact nature of the bursts remains enigmatic. ESO PR Photo 17b/07 ESO PR Photo 17b/07 Kueyen at Night Because a gamma-ray burst typically occurs at very large distances, its optical afterglow is faint. In addition, it fades very rapidly: in only a few hours the optical afterglow brightness can fade by as much as a factor of 500. This makes detailed spectral analysis possible only for a few hours after the gamma-ray detection, even with large telescopes. During the first minutes and hours after the explosion, there is also the important opportunity to observe time-dependent phenomena related to the influence of the explosion on its surroundings. The technical challenge therefore consists of obtaining high-resolution spectroscopy with 8-10 m class telescopes as quickly as possible. "The afterglow spectra provide a wealth of information about the composition of the interstellar medium of the galaxy in which the star exploded. Some of us even hoped to characterize the gas in the vicinity of the explosion," said team member Cédric Ledoux (ESO). ESO PR Photo 17c/07 ESO PR Photo 17c/07 The Kueyen Control Room

  17. Tenderizing Meat with Explosives

    NASA Astrophysics Data System (ADS)

    Gustavson, Paul K.; Lee, Richard J.; Chambers, George P.; Solomon, Morse B.; Berry, Brad W.

    2001-06-01

    Investigators at the Food Technology and Safety Laboratory have had success tenderizing meat by explosively shock loading samples submerged in water. This technique, referred to as the Hydrodynamic Pressure (HDP) Process, is being developed to improve the efficiency and reproducibility of the beef tenderization processing over conventional aging techniques. Once optimized, the process should overcome variability in tenderization currently plaguing the beef industry. Additional benefits include marketing lower quality grades of meat, which have not been commercially viable due to a low propensity to tenderization. The simplest and most successful arrangement of these tests has meat samples (50 to 75 mm thick) placed on a steel plate at the bottom of a plastic water vessel. Reported here are tests which were instrumented by Indian Head investigators. Carbon-composite resistor-gauges were used to quantify the shock profile delivered to the surface of the meat. PVDF and resistor gauges (used later in lieu of PVDF) provided data on the pressure-time history at the meat/steel interface. Resulting changes in tenderization were correlated with increasing shock duration, which were provided by various explosives.

  18. BP, Corporate R&D, and the University

    ERIC Educational Resources Information Center

    Lea, Russ

    2010-01-01

    April 20, 2010, and the days following, provided the world with graphic images of a burning oil rig, a perception that the oil industry and state and federal governments were helpless, and a pervasive sense of the devastation wrought on coastal residents by the rig explosion and the oil spill. The residents of the Gulf Coast soon realized that…

  19. The rig of the eleventh-century ship at Serce Liman, Turkey 

    E-print Network

    Matthews, Sheila Diane

    1983-01-01

    of The Homilies of St. Gregory of Nazianzenus dated to the eleventh century 17. Lateen-rigged vessel with a single mast stepped far forward in the bow. Taken from a copy of a Greek manuscript dated c. eleventh century 36 18. Single-masted, lateen...-rigged vessel. Taken from a copy of the miniature from the Bristol Psalter dated 1066 38 19. Single-masted vessels. Tenth-century graffiti from Bulgaria 39 20. Single-masted, lateen-rigged vessel. Taken from a copy of a miniature from a Greek manuscript...

  20. Sidewall penetrator for oil wells

    NASA Technical Reports Server (NTRS)

    Collins, E. R., Jr.

    1981-01-01

    Penetrator bores horizontal holes in well casing to increase trapped oil drainage. Several penetrators operated by common drive are inserted into well at once. Shaft, made from spiraling cable, rotates and thrusts simultaneously through rigid curvilinear guide tube forcing bit through casing into strata. Device pierces more deeply than armor-piercing bullets and shaped explosive charges.

  1. Equations of State and High-Pressure Phases of Explosives

    Microsoft Academic Search

    Suhithi M. Peiris; Jared C. Gump

    Energetic materials, being the collective name for explosives, propellants, pyrotechnics, and other flash-bang materials,\\u000a span a wide range of composite chemical formulations. Most militarily used energetics are solids composed of particles of\\u000a the pure energetic material held together by a binder. Commonly used binders include various oils, waxes, and polymers or\\u000a plasticizers, and the composite is melt cast, cured, or

  2. Negative role of RIG-I serine 8 phosphorylation in the regulation of interferon-beta production.

    PubMed

    Nistal-Villán, Estanislao; Gack, Michaela U; Martínez-Delgado, Gustavo; Maharaj, Natalya P; Inn, Kyung-Soo; Yang, Heyi; Wang, Rong; Aggarwal, Aneel K; Jung, Jae U; García-Sastre, Adolfo

    2010-06-25

    RIG-I (retinoic acid-inducible gene I) and TRIM25 (tripartite motif protein 25) have emerged as key regulatory factors to induce interferon (IFN)-mediated innate immune responses to limit viral replication. Upon recognition of viral RNA, TRIM25 E3 ligase binds the first caspase recruitment domain (CARD) of RIG-I and subsequently induces lysine 172 ubiquitination of the second CARD of RIG-I, which is essential for the interaction with downstream MAVS/IPS-1/CARDIF/VISA and, thereby, IFN-beta mRNA production. Although ubiquitination has emerged as a major factor involved in RIG-I activation, the potential contribution of other post-translational modifications, such as phosphorylation, to the regulation of RIG-I activity has not been addressed. Here, we report the identification of serine 8 phosphorylation at the first CARD of RIG-I as a negative regulatory mechanism of RIG-I-mediated IFN-beta production. Immunoblot analysis with a phosphospecific antibody showed that RIG-I serine 8 phosphorylation steady-state levels were decreased upon stimulation of cells with IFN-beta or virus infection. Substitution of serine 8 in the CARD RIG-I functional domain with phosphomimetic aspartate or glutamate results in decreased TRIM25 binding, RIG-I ubiquitination, MAVS binding, and downstream signaling. Finally, sequence comparison reveals that only primate species carry serine 8, whereas other animal species carry an asparagine, indicating that serine 8 phosphorylation may represent a primate-specific regulation of RIG-I activation. Collectively, these data suggest that the phosphorylation of RIG-I serine 8 operates as a negative switch of RIG-I activation by suppressing TRIM25 interaction, further underscoring the importance of RIG-I and TRIM25 connection in type I IFN signal transduction. PMID:20406818

  3. Cotton Gin Dust Explosibility Determinations 

    E-print Network

    Vanderlick, Francis Jerome

    2014-01-06

    personnel listed dust found in cotton gins, or gin dust, fueled two explosions in the past. OSHA is required by law to regulate facilities handling explosible dusts to provide a safe working environment for employees. The dust handling facilities must test...

  4. Numerical Model for Hydrovolcanic Explosions.

    NASA Astrophysics Data System (ADS)

    Mader, Charles; Gittings, Michael

    2007-03-01

    A hydrovolcanic explosion is generated by the interaction of hot magma with ground water. It is called Surtseyan after the 1963 explosive eruption off Iceland. The water flashes to steam and expands explosively. Liquid water becomes water gas at constant volume and generates pressures of about 3GPa. The Krakatoa hydrovolcanic explosion was modeled using the full Navier-Stokes AMR Eulerian compressible hydrodynamic code called SAGE [1] which includes the high pressure physics of explosions. The water in the hydrovolcanic explosion was described as liquid water heated by magma to 1100 K. The high temperature water is treated as an explosive with the hot liquid water going to water gas. The BKW [2] steady state detonation state has a peak pressure of 8.9 GPa, a propagation velocity of 5900 meters/sec and the water is compressed to 1.33 g/cc. [1] Numerical Modeling of Water Waves, Second Edition, Charles L. Mader, CRC Press 2004. [2] Numerical Modeling of Explosions and Propellants, Charles L. Mader, CRC Press 1998.

  5. After an explosion, what happens

    Microsoft Academic Search

    1975-01-01

    Whenever an explosion or fire occurs in the presence of LP-gas, an investigation is usually necessary to determine the cause and to protect the marketer from unreasonable lawsuits. Haag Engineering Co., Dallas, urges that the evidence be studied carefully so that mistakes do not obliterate evidence before a conclusion is reached. Overall effects of the explosion should be examined to

  6. 30 CFR 77.1301 - Explosives; magazines.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...2012-07-01 false Explosives; magazines. 77.1301 Section 77.1301 ...Blasting § 77.1301 Explosives; magazines. (a) Detonators and explosives other than blasting agents shall be stored in magazines. (b) Detonators shall not be...

  7. 30 CFR 77.1301 - Explosives; magazines.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...2013-07-01 false Explosives; magazines. 77.1301 Section 77.1301 ...Blasting § 77.1301 Explosives; magazines. (a) Detonators and explosives other than blasting agents shall be stored in magazines. (b) Detonators shall not be...

  8. 30 CFR 77.1301 - Explosives; magazines.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...2010-07-01 false Explosives; magazines. 77.1301 Section 77.1301 ...Blasting § 77.1301 Explosives; magazines. (a) Detonators and explosives other than blasting agents shall be stored in magazines. (b) Detonators shall not be...

  9. 30 CFR 77.1301 - Explosives; magazines.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...2011-07-01 false Explosives; magazines. 77.1301 Section 77.1301 ...Blasting § 77.1301 Explosives; magazines. (a) Detonators and explosives other than blasting agents shall be stored in magazines. (b) Detonators shall not be...

  10. 30 CFR 77.1301 - Explosives; magazines.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...2014-07-01 false Explosives; magazines. 77.1301 Section 77.1301 ...Blasting § 77.1301 Explosives; magazines. (a) Detonators and explosives other than blasting agents shall be stored in magazines. (b) Detonators shall not be...

  11. 77 FR 55108 - Explosive Siting Requirements

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-07

    ...facilities at a launch site where solid propellants, energetic liquids, or other explosives...basis of the type and quantity of solid propellants, energetic liquids, and other explosives...division 1.1 explosives and liquid propellants with trinitrotoluene (TNT)...

  12. Trace Explosive Detection Using Nanosensors

    SciTech Connect

    Senesac, Larry R [ORNL; Thundat, Thomas George [ORNL

    2008-01-01

    Selective and sensitive detection of explosives is very important in countering terrorist threats. Detecting trace explosives has become a very complex and expensive endeavor because of a number of factors, such as the wide variety of materials that can be used as explosives, the lack of easily detectable signatures, the vast number of avenues by which these weapons can be deployed, and the lack of inexpensive sensors with high sensitivity and selectivity. High sensitivity and selectivity, combined with the ability to lower the deployment cost of sensors using mass production, is essential in winning the war on explosives-based terrorism. Nanosensors have the potential to satisfy all the requirements for an effective platform for the trace detection of explosives.

  13. Assessing nuclear explosions

    NASA Astrophysics Data System (ADS)

    Smith, Joseph V.

    The all-Union session on the Geophysical and Geochemical Consequences of Nuclear Explosions at the 1983 AGU Fall Meeting attracted a large audience, and many were unable to find a seat or standing room. The speakers and questioners emphasized the complexity of the processes and the need to extend the computer models. In particular, the global-circulation models presented byscientists from the National Center for Atmospheric Research showed that smoke/dust clouds should cause major changes in the weather systems with great contrast between the temperature perturbations over oceanic, coastal, and continental regions. Important developments in the models and conclusions can be expected over the next few years as AGU members from many disciplines contribute their skills.

  14. Open Rigging Through XML: Character Setup Utilizing Metadata and Node Based Editing 

    E-print Network

    Kelly, Logan Scott

    2014-02-19

    definitions in extensible markup language (XML). This method provides for version control along with the construct of a metadata node network facilitating easy propagation of changes to existing rigs. A node based interface is also provided for easily...

  15. FULL SCALE MULTISTAGE J-35-A-23 TURBINE TEST APPARATUS - SUITABLY CONDITIONED AIR ENTERING THE RIG

    NASA Technical Reports Server (NTRS)

    1951-01-01

    FULL SCALE MULTISTAGE J-35-A-23 TURBINE TEST APPARATUS - SUITABLY CONDITIONED AIR ENTERING THE RIG THROUGH THE OVERHEAD PIPE IS PASSED THROUGH A CYLINDRICAL SCREEN IN THE INLET PLENUM CHAMBER TO ENTER THE TURBINE NOZZLE DIAPHRAGM AT UNIFORM PRESSUR

  16. 16 CFR Figure 1 to Part 1512 - Bicycle Front Fork Cantilever Bending Test Rig

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ...2011-01-01 2011-01-01 false Bicycle Front Fork Cantilever Bending Test Rig...SUBSTANCES ACT REGULATIONS REQUIREMENTS FOR BICYCLES Pt. 1512, Fig. 1 Figure 1 to Part 1512—Bicycle Front Fork Cantilever Bending Test...

  17. 77 FR 23117 - Rigging Equipment for Material Handling Construction Standard; Correction and Technical Amendment

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-18

    ...SUMMARY: OSHA is correcting its sling standard for construction titled ``Rigging...was amending its standards regulating slings for general industry, shipyard employment...requirements that prohibit employers from loading slings in excess of the recommended safe...

  18. Loads on Tie-Down Systems for Floating Drilling Rigs during Hurricane Conditions 

    E-print Network

    Bae, Yoon Hyeok

    2010-01-16

    Tie-down systems are used to fasten drilling rigs to the deck of offshore structures during harsh environmental conditions such as hurricanes. During Hurricane Ivan (2004) and Katrina (2005), a number of offshore structures ...

  19. 75 FR 20372 - Certificate of Alternative Compliance for the Offshore Supply Vessel RIG RUNNER

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-19

    ...89, has been issued for the offshore supply vessel RIG RUNNER, O...maneuver within close proximity of offshore platforms. The forward masthead light...working in close proximity to offshore platforms. Furthermore the...

  20. Non-Solid Explosives for Shaped Charges I: Explosive Parameters Measurements for Sensitized Liquid Explosives

    Microsoft Academic Search

    M. Cartwright; D. Lloyd-Roach; P. J. Simpson

    2007-01-01

    The disposal of time-expired and unexploded ordnance is a major problem for the NATO countries. Simple functioning of the device, either in its design mode or by attachment of additional explosive and firing, requires extended safety zones. Inducing deflagration could reduce co-lateral damage within the safety zone. One solution to the problem, with current explosive fillings, of producing predictable performance

  1. RIG-I-Mediated Antiviral Responses to Single-Stranded RNA Bearing 5'-Phosphates

    Microsoft Academic Search

    Andreas Pichlmair; Oliver Schulz; Choon Ping Tan; Tanja I. Näslund; Peter Liljeström; Friedemann Weber; Caetano Reis e Sousa

    2006-01-01

    Double-stranded RNA (dsRNA) produced during viral replication is believed to be the critical trigger for activation of antiviral immunity mediated by the RNA helicase enzymes retinoic acid-inducible gene I (RIG-I) and melanoma differentiation-associated gene 5 (MDA5). We showed that influenza A virus infection does not generate dsRNA and that RIG-I is activated by viral genomic single-stranded RNA (ssRNA) bearing 5'-phosphates.

  2. An experimental rig for near-bit force measurement and drillstring acoustic transmission of BHA

    Microsoft Academic Search

    Li Cheng; Ding Tianhuai; Wang Peng

    2011-01-01

    An experimental rig for near-bit force measurement and drillstring acoustic transmission of bottom-hole assembly (BHA) is designed and implemented to investigate downhole dynamic behaviors of BHA. By using a developed dynamic force sensor device with a four-straight beam strain gauge, the rig can measure axial, lateral forces and torques exerted on simulated drillstring while rotating. For the upward transmission of

  3. Mode localization results and laboratory demonstration techniques with a multi-pendulum rig 

    E-print Network

    Bollich, Robert Kenneth Gerard

    1992-01-01

    MODE LOCALIZATION RESULTS AND LABORATORY DEMONSTRATION TECHNIQUES WITH A MULTI-PENDULUM RIG A Thesis by ROBERT KENNETH GERARD BOLLICH Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE August 1992 Major Subject: Mechanical Engineering MODE LOCALIZATION RESULTS AND LABORATORY DEMONSTRATION TECHNIQUES WITH A MULTI-PENDULUM RIG A Thesis by ROBERT KENNETH GERARD BOLLICH Approved...

  4. The rig of the eleventh-century ship at Serce Liman, Turkey

    E-print Network

    Matthews, Sheila Diane

    1983-01-01

    THE RIG OF THE ELEVENTH-CENTURY SHIP AT SERQE LIMAN, TURKEY A Thesis by SHEILA DIANE MATTHEWS Approved as to style and content by: QLU Frederick van Doorninck, Jr (Chairman of Committee) George F. Bass (Member) J. Richard S (Member Hen... C. Schmidt (Member) aughn M. Bryan (Head of Department) May 1983 ABSTRACT The Rig of the Eleventh-Century Ship at Serge Liman, Turkey. (May 1983) Sheila Diane Matthews, B. A. , University of Texas at Austin; Chairman of Advisory Committee...

  5. Aspirating Seal Development: Analytical Modeling and Seal Test Rig

    NASA Technical Reports Server (NTRS)

    Bagepalli, Bharat

    1996-01-01

    This effort is to develop large diameter (22 - 36 inch) Aspirating Seals for application in aircraft engines. Stein Seal Co. will be fabricating the 36-inch seal(s) for testing. GE's task is to establish a thorough understanding of the operation of Aspirating Seals through analytical modeling and full-scale testing. The two primary objectives of this project are to develop the analytical models of the aspirating seal system, to upgrade using GE's funds, GE's 50-inch seal test rig for testing the Aspirating Seal (back-to-back with a corresponding brush seal), test the aspirating seal(s) for seal closure, tracking and maneuver transients (tilt) at operating pressures and temperatures, and validate the analytical model. The objective of the analytical model development is to evaluate the transient and steady-state dynamic performance characteristics of the seal designed by Stein. The transient dynamic model uses a multi-body system approach: the Stator, Seal face and the rotor are treated as individual bodies with relative degrees of freedom. Initially, the thirty-six springs are represented as a single one trying to keep open the aspirating face. Stops (Contact elements) are provided between the stator and the seal (to compensate the preload in the fully-open position) and between the rotor face and Seal face (to detect rub). The secondary seal is considered as part of the stator. The film's load, damping and stiffness characteristics as functions of pressure and clearance are evaluated using a separate (NASA) code GFACE. Initially, a laminar flow theory is used. Special two-dimensional interpolation routines are written to establish exact film load and damping values at each integration time step. Additionally, other user-routines are written to read-in actual pressure, rpm, stator-growth and rotor growth data and, later, to transfer these as appropriate loads/motions in the system-dynamic model. The transient dynamic model evaluates the various motions, clearances and forces as the seals are subjected to different aircraft maneuvers: Windmilling restart; start-ground idle; ground idle-takeoff; takeoff-burst chop, etc. Results of this model show that the seal closes appropriately and does not ram into the rotor for all of the conditions analyzed. The rig upgrade design for testing Aspirating Seals has been completed. Long lead-time items (forgings, etc.) have been ordered.

  6. Oil Oil Everywhere

    NSDL National Science Digital Library

    2012-07-18

    This math meets ecology lesson provides hands-on experiences with mixing oil and water, provides surface area information about the 2010 oil spill in the Gulf of Mexico, and gives learners opportunities to estimate small oil spills of their own making. This lesson guide includes questions for learners, assessment options, extensions, and reflection questions.

  7. Discriminating between explosions and earthquakes

    NASA Astrophysics Data System (ADS)

    Cho, Kwang-Hyun

    2014-12-01

    Earthquake, explosion, and a nuclear test data are compared with forward modeling and band-pass filtered surface wave amplitude data for exploring methodologies to improve earthquake-explosion discrimination. The proposed discrimination method is based on the solutions of a double integral transformation in the wavenumber and frequency domains. Recorded explosion data on June 26, 2001 (39.212°N, 125.383°E) and October 30, 2001 (38.748°N, 125.267°E), a nuclear test on October 9, 2006 (41.275°N, 129.095°E), and two earthquakes on April 14, 2002 (39.207°N, 125.686°E) and June 7, 2002 (38.703°N, 125.638°E), all in North Korea, are used to discriminate between explosions and earthquakes by seismic wave analysis and numerical modeling. The explosion signal is characterized by first P waves with higher energy than that of S waves. Rg waves are clearly dominant at 0.05-0.5 Hz in the explosion data but not in the earthquake data. This feature is attributed to the dominant P waves in the explosion and their coupling with the SH components.

  8. Noise From Shallow Underwater Explosions

    NASA Astrophysics Data System (ADS)

    Soloway, Alexander G.

    Naval activities such as ordnance disposal, demolition and requisite training, can involve detonation of small explosive charges in shallow water that have the potential to harm nearby marine life. Measurements of the underwater sound generated by sub-surface explosions were collected as part of a naval training exercise. In this thesis the noise levels from these explosions will be investigated using peak pressure, sound exposure level and energy spectral density. Measurements of very-low frequency Scholte interface waves will also be presented and used to investigate elastic parameters in the sediment.

  9. Light metal explosives and propellants

    DOEpatents

    Wood, Lowell L.; Ishikawa, Muriel Y.; Nuckolls, John H.; Pagoria, Phillip F.; Viecelli, James A.

    2005-04-05

    Disclosed herein are light metal explosives, pyrotechnics and propellants (LME&Ps) comprising a light metal component such as Li, B, Be or their hydrides or intermetallic compounds and alloys containing them and an oxidizer component containing a classic explosive, such as CL-20, or a non-explosive oxidizer, such as lithium perchlorate, or combinations thereof. LME&P formulations may have light metal particles and oxidizer particles ranging in size from 0.01 .mu.m to 1000 .mu.m.

  10. Thermal barrier coatings - Burner rig hot corrosion test results

    NASA Technical Reports Server (NTRS)

    Hodge, P. E.; Stecura, S.; Gedwill, M. A.; Zaplatynsky, I.; Levine, S. R.

    1980-01-01

    A Mach 0.3 burner rig test program was conducted to examine the sensitivity of thermal barrier coatings to Na- and V-contaminated combustion gases simulating potential utility gas turbine environments. Coating life of the standard ZrO2-12Y2O3/Ni-16.2Cr-5.6Al-0.6Y (composition in wt %) NASA thermal barrier coating system which was developed for aircraft gas turbines was significantly reduced in such environments. Two thermal barrier coating systems, Ca2SiO4/Ni-16.2Cr-5.6Al-0.6Y and ZrO2-8Y2O3/Ni-16.4Cr-5.1Al-0.15Y and a less insulative cermet coating system, 50 vol % MgO-50 vol % Ni-19.6Cr-17.1Al-0.97Y/Ni-16.2Cr-5.6Al-0.6Y, were identified as having much improved corrosion resistance compared to the standard coating.

  11. Frozen Rigging Model of the Energy Dominated Universe

    NASA Astrophysics Data System (ADS)

    Carter, Randon

    2005-10-01

    Composite rigging systems, involving membranes that meet on strings that meet on monopoles, arise naturally by the Kibble mechanism as topological defects in field theories involving spontaneous symmetry breaking. Such systems will tend to freeze out into static lattice type configurations with energy contribution ultimately be provided by the membranes. It has been suggested by Bucher and Spergel that on scales large compared with the relevant (interstellar separation) distance characterizing the relevant mesh length, such a system may behave as a rigidity-stabilized solid, having an approximately isotropic stress energy tensor with negative pressure, as given by a polytropic index ? = w+1 = 1/3. It has recently been shown that such a system can be rigid enough to be stable if the number of membranes meeting at a junction is even (though not if it is odd). Using as examples an approximaely O(3) symmetric scalar field model that can provide an “8-color” (body-centered) cubic lattice, and an approximate U(1)× U(1) model offering a disordered “5-color” lattice, it is argued that such a mechanism can account naturally for the observed dark energy dominance of the universe, without ad hoc assumptions, other than that the relevant symmetry breaking phase transition should have occurred somewhere about the Kev energy range.

  12. Structural basis of RNA recognition and activation by innate immune receptor RIG-I

    SciTech Connect

    Jiang, Fuguo; Ramanathan, Anand; Miller, Matthew T.; Tang, Guo-Qing; Gale, Jr., Michael; Patel, Smita S.; Marcotrigiano, Joseph (Rutgers); (RWJ-Med); (UW-MED)

    2012-05-29

    Retinoic-acid-inducible gene-I (RIG-I; also known as DDX58) is a cytoplasmic pathogen recognition receptor that recognizes pathogen-associated molecular pattern (PAMP) motifs to differentiate between viral and cellular RNAs. RIG-I is activated by blunt-ended double-stranded (ds)RNA with or without a 5'-triphosphate (ppp), by single-stranded RNA marked by a 5'-ppp and by polyuridine sequences. Upon binding to such PAMP motifs, RIG-I initiates a signalling cascade that induces innate immune defences and inflammatory cytokines to establish an antiviral state. The RIG-I pathway is highly regulated and aberrant signalling leads to apoptosis, altered cell differentiation, inflammation, autoimmune diseases and cancer. The helicase and repressor domains (RD) of RIG-I recognize dsRNA and 5'-ppp RNA to activate the two amino-terminal caspase recruitment domains (CARDs) for signalling. Here, to understand the synergy between the helicase and the RD for RNA binding, and the contribution of ATP hydrolysis to RIG-I activation, we determined the structure of human RIG-I helicase-RD in complex with dsRNA and an ATP analogue. The helicase-RD organizes into a ring around dsRNA, capping one end, while contacting both strands using previously uncharacterized motifs to recognize dsRNA. Small-angle X-ray scattering, limited proteolysis and differential scanning fluorimetry indicate that RIG-I is in an extended and flexible conformation that compacts upon binding RNA. These results provide a detailed view of the role of helicase in dsRNA recognition, the synergy between the RD and the helicase for RNA binding and the organization of full-length RIG-I bound to dsRNA, and provide evidence of a conformational change upon RNA binding. The RIG-I helicase-RD structure is consistent with dsRNA translocation without unwinding and cooperative binding to RNA. The structure yields unprecedented insight into innate immunity and has a broader impact on other areas of biology, including RNA interference and DNA repair, which utilize homologous helicase domains within DICER and FANCM.

  13. Disaster management following explosion.

    PubMed

    Sharma, B R

    2008-01-01

    Explosions and bombings remain the most common deliberate cause of disasters involving large numbers of casualties, especially as instruments of terrorism. These attacks are virtually always directed against the untrained and unsuspecting civilian population. Unlike the military, civilians are poorly equipped or prepared to handle the severe emotional, logistical, and medical burdens of a sudden large casualty load, and thus are completely vulnerable to terrorist aims. To address the problem to the maximum benefit of mass disaster victims, we must develop collective forethought and a broad-based consensus on triage and these decisions must reach beyond the hospital emergency department. It needs to be realized that physicians should never be placed in a position of individually deciding to deny treatment to patients without the guidance of a policy or protocol. Emergency physicians, however, may easily find themselves in a situation in which the demand for resources clearly exceeds supply and for this reason, emergency care providers, personnel, hospital administrators, religious leaders, and medical ethics committees need to engage in bioethical decision-making. PMID:18522253

  14. Explosive actuated valve

    DOEpatents

    Byrne, Kenneth G. (Livermore, CA)

    1983-01-01

    1. A device of the character described comprising the combination of a housing having an elongate bore and including a shoulder extending inwardly into said bore, a single elongate movable plunger disposed in said bore including an outwardly extending flange adjacent one end thereof overlying said shoulder, normally open conduit means having an inlet and an outlet perpendicularly piercing said housing intermediate said shoulder and said flange and including an intermediate portion intersecting and normally openly communicating with said bore at said shoulder, normally closed conduit means piercing said housing and intersecting said bore at a location spaced from said normally open conduit means, said elongate plunger including a shearing edge adjacent the other end thereof normally disposed intermediate both of said conduit means and overlying a portion of said normally closed conduit means, a deformable member carried by said plunger intermediate said flange and said shoulder and normally spaced from and overlying the intermediate portion of said normally open conduit means, and means on the housing communicating with the bore to retain an explosive actuator for moving said plunger to force the deformable member against the shoulder and extrude a portion of the deformable member out of said bore into portions of the normally open conduit means for plugging the same and to effect the opening of said normally closed conduit means by the plunger shearing edge substantially concomitantly with the plugging of the normally open conduit means.

  15. Explosive actuated valves

    DOEpatents

    Cobb, Jr., Lawrence L. (Livermore, CA)

    1983-01-01

    1. A device of the character described comprising the combination of a generally tubular housing having an end portion forming a chamber to receive the sensitive portion of an explosive squib, a plunger within said housing having an end portion exposed to said chamber, squib retaining means for engaging said housing and a said squib to releasably maintain the squib in close proximity to said plunger end portion including a retaining ring of fusible material spaced outwardly from and encircling at least part of a said squib and part of its sensitive portion for reception of heat from an external source prior to appreciable reception thereof by the sensitive portion of the squib, an annular compression spring bearing at one end against said housing for urging at least a portion of the squib retaining means and a said squib away from said housing and from said plunger end portion upon subjection of the fusible material to heat sufficient to melt at least a portion thereof, and guide means for said spring to maintain even expansion thereof as a said squib is being urged away from said housing.

  16. NASA Spinoff Article: Automated Procedures To Improve Safety on Oil Rigs

    NASA Technical Reports Server (NTRS)

    Garud, Sumedha

    2013-01-01

    On May 11th, 2013, two astronauts emerged from the interior of the International Space Station (ISS) and worked their way toward the far end of spacecraft. Over the next 51/2 hours, the two replaced an ammonia pump that had developed a significant leak a few days before. On the ISS, ammonia serves the vital role of cooling components-in this case, one of the station's eight solar arrays. Throughout the extravehicular activity (EVA), the astronauts stayed in constant contact with mission control: every movement, every action strictly followed a carefully planned set of procedures to maximize crew safety and the chances of success. Though the leak had come as a surprise, NASA was prepared to handle it swiftly thanks in part to the thousands of procedures that have been written to cover every aspect of the ISS's operations. The ISS is not unique in this regard: Every NASA mission requires well-written procedures-or detailed lists of step-by-step instructions-that cover how to operate equipment in any scenario, from normal operations to the challenges created by malfunctioning hardware or software. Astronauts and mission control train and drill extensively in procedures to ensure they know what the proper procedures are and when they should be used. These procedures used to be exclusively written on paper, but over the past decade, NASA has transitioned to digital formats. Electronic-based documentation simplifies storage and use, allowing astronauts and flight controllers to find instructions more quickly and display them through a variety of media. Electronic procedures are also a crucial step toward automation: once instructions are digital, procedure display software can be designed to assist in authoring, reviewing, and even executing them.

  17. ROLLING ELEMENT BEARING FAULT DIAGNOSIS IN ROTATING MACHINES OF OIL EXTRACTION RIGS

    Microsoft Academic Search

    E. Mendel; T. W. Rauber; F. M. Varej; R. J. Batista

    2009-01-01

    This paper presents vibration analysis techniques for fault detection in rotating machines. Rolling element bearing defects inside a motor pump are the subject of study. Signal processing techniques, like frequency filters, Hilbert tra ns- form, and spectral analysis are used to extract features use d later as a base to classify the condition of machines. Also, pattern recognition techniques are

  18. Recoveries of drift cards released from: Oil rigs around New Zealand, 1975–76 (note)

    Microsoft Academic Search

    R. A. Heath; B. S. Shakespeare

    1977-01-01

    Drift cards were released in batches of 50 every 2 d at drilling sites off the north and south Taranaki coast (May?October 1975), Banks Peninsula (July?August 1975), and in Tasman (January?March 1976) and Hawke Bays (November 1975?January 1976). The shortest distance “despatch to recovery” trajectories indicate that only in the South Taranaki Bight are the trajectories predominantly unidirectional, the surface

  19. Automatic feature definition and selection in fault diagnosis of oil rig motor pumps

    Microsoft Academic Search

    E. D. Wandekokem; T. W. Rauber; R. J. Batista

    2009-01-01

    We present a collection of pattern recognition techniques applied to fault detection and diagnosis of motor pumps. Vibrational patterns are the basis for describing the condition of the process. We rely on the data-driven approach to the learning of the fault classes, i.e. supervised learning in pattern recognition. Our work is motivated by the diversity of the studied defects, the

  20. Marine riser protector for use on offshore oil drilling rigs in icy waters

    Microsoft Academic Search

    Yashima

    1985-01-01

    An apparatus for protecting a marine riser extending downwardly from a platform of an offshore station above a sea level toward a sea bottom. A tubular protector is removably mounted on the underside of the platform in surrounding relation to the marine riser in the vicinity of the sea level. According to another embodiment, a tubular protector has an upper

  1. Comparisons of Rig and Engine Dynamic Events in the Compressor of an Axi-Centrifugal Turboshaft Engine

    NASA Technical Reports Server (NTRS)

    Owen, A. Karl; Mattern, Duane L.; Le, Dzu K.

    1996-01-01

    Steady state and dynamic data were acquired in a T55-L-712 compressor rig. In addition, a T55-L-12 engine was instrumented and similar data were acquired. Rig and engine stall/surge data were analyzed using modal techniques. This paper compares rig and engine preliminary results for the ground idle (approximately 60% of design speed) point. The results of these analyses indicate both rig and engine dynamic event are preceded by indications of traveling wave energy in front of the compressor face. For both rig and engine, the traveling wave energy contains broad band energy with some prominent narrow peaks and, while the events are similar in many ways, some noticeable differences exist between the results of the analyses of rig data and engine data.

  2. Explosive Spot Joining of Metals

    NASA Technical Reports Server (NTRS)

    Bement, Laurence J. (Inventor); Perry, Ronnie B. (Inventor)

    1997-01-01

    The invention is an apparatus and method for wire splicing using an explosive joining process. The apparatus consists of a prebend, U-shaped strap of metal that slides over prepositioned wires. A standoff means separates the wires from the strap before joining. An adhesive means holds two ribbon explosives in position centered over the U-shaped strap. A detonating means connects to the ribbon explosives. The process involves spreading strands of each wire to be joined into a flat plane. The process then requires alternating each strand in alignment to form a mesh-like arrangement with an overlapped area. The strap slides over the strands of the wires. and the standoff means is positioned between the two surfaces. The detonating means then initiates the ribbon explosives that drive the strap to accomplish a high velocity. angular collision between the mating surfaces. This collision creates surface melts and collision bonding resulting in electron-sharing linkups.

  3. Explosive plane-wave lens

    DOEpatents

    Marsh, Stanley P. (Los Alamos, NM)

    1988-01-01

    An explosive plane-wave air lens which enables a spherical wave form to be converted to a planar wave without the need to specially machine or shape explosive materials is described. A disc-shaped impactor having a greater thickness at its center than around its periphery is used to convert the spherical wave into a plane wave. When the wave reaches the impactor, the center of the impactor moves first because the spherical wave reaches the center of the impactor first. The wave strikes the impactor later in time as one moves radially along the impactor. Because the impactor is thinner as one moves radially outward, the velocity of the impactor is greater at the periphery than at the center. An acceptor explosive is positioned so that the impactor strikes the acceptor simultaneously. Consequently, a plane detonation wave is propagated through the acceptor explosive.

  4. Explosives detection with hard-wired moths

    Microsoft Academic Search

    Tony L. King; Frank M. Horine; Kevin C. Daly; Brian H. Smith

    2004-01-01

    Abstract—Insects, such as moths, can be trained to respond to explosives odors. A prototype system that can use trained insects such as moths to detect explosives was designed, assembled, and tested. It compares the electromyographic signals of insects trained to respond or not respond to a target explosive vapor in order to determine whether or not explosive devices, such as

  5. Detonation characteristics of powerful insensitive explosives

    Microsoft Academic Search

    Yu. A. Bogdanova; S. A. Gubin; B. L. Korsunskii; V. I. Pepekin

    2009-01-01

    Experimental and calculated detonation characteristics of powerful insensitive explosives are given. Features of explosives\\u000a with a high hydrogen content are discussed. The relationship between the power and sensitivity characteristics of explosives\\u000a and the structure of their molecules are considered. Prospects for the development of powerful explosives are discussed.

  6. EXPLOSIVE WELDING SIMULATION OF MULTILAYER TUBES

    Microsoft Academic Search

    A. A. Akbari Mousavi; G. Joodaki

    Summary. Explosive welding is a process which uses explosive detonation to propel the flyer plate material into the base material to produce a sound joint. Experimental tests have been performed to explosively welded aluminum 5056, aluminum 1015 and stainless steel 304 tubes in one step. The tests have been carried out using various stand-off distances and explosive ratios. Various interface

  7. The characterization and evaluation of accidental explosions

    NASA Technical Reports Server (NTRS)

    Strehlow, R. A.; Baker, W. E.

    1975-01-01

    Accidental explosions are discussed from a number of viewpoints. First, all accidental explosions, intentional explosions and natural explosions are characterized by type. Second, the nature of the blast wave produced by an ideal (point source or HE) explosion is discussed to form a basis for describing how other explosion processes yield deviations from ideal blast wave behavior. The current status blast damage mechanism evaluation is also discussed. Third, the current status of our understanding of each different category of accidental explosions is discussed in some detail.

  8. Microbial remediation of explosive waste.

    PubMed

    Singh, Baljinder; Kaur, Jagdeep; Singh, Kashmir

    2012-05-01

    Explosives are synthesized globally mainly for military munitions. Nitrate esters, such as GTN and PETN, nitroaromatics like TNP and TNT and nitramines with RDX, HMX and CL20, are the main class of explosives used. Their use has resulted in severe contamination of environment and strategies are now being developed to clean these substances in an economical and eco-friendly manner. The incredible versatility inherited in microbes has rendered these explosives as a part of the biogeochemical cycle. Several microbes catalyze mineralization and/or nonspecific transformation of explosive waste either by aerobic or anaerobic processes. It is likely that ongoing genetic adaptation, with the recruitment of silent sequences into functional catabolic routes and evolution of substrate range by mutations in structural genes, will further enhance the catabolic potential of bacteria toward explosives and ultimately contribute to cleansing the environment of these toxic and recalcitrant chemicals. This review summarizes information on the biodegradation and biotransformation pathways of several important explosives. Isolation, characterization, utilization and manipulation of the major detoxifying enzymes and the molecular basis of degradation are also discussed. This may be useful in developing safer and economic microbiological methods for clean up of soil and water contaminated with such compounds. The necessity of further investigations concerning the microbial metabolism of these substances is also discussed. PMID:22497284

  9. The regulatory domain of the RIG-I family ATPase LGP2 senses double-stranded RNA.

    PubMed

    Pippig, Diana A; Hellmuth, Johannes C; Cui, Sheng; Kirchhofer, Axel; Lammens, Katja; Lammens, Alfred; Schmidt, Andreas; Rothenfusser, Simon; Hopfner, Karl-Peter

    2009-04-01

    RIG-I and MDA5 sense cytoplasmic viral RNA and set-off a signal transduction cascade, leading to antiviral innate immune response. The third RIG-I-like receptor, LGP2, differentially regulates RIG-I- and MDA5-dependent RNA sensing in an unknown manner. All three receptors possess a C-terminal regulatory domain (RD), which in the case of RIG-I senses the viral pattern 5'-triphosphate RNA and activates ATP-dependent signaling by RIG-I. Here we report the 2.6 A crystal structure of LGP2 RD along with in vitro and in vivo functional analyses and a homology model of MDA5 RD. Although LGP2 RD is structurally related to RIG-I RD, we find it rather binds double-stranded RNA (dsRNA) and this binding is independent of 5'-triphosphates. We identify conserved and receptor-specific parts of the RNA binding site. Latter are required for specific dsRNA binding by LGP2 RD and could confer pattern selectivity between RIG-I-like receptors. Our data furthermore suggest that LGP2 RD modulates RIG-I-dependent signaling via competition for dsRNA, another pattern sensed by RIG-I, while a fully functional LGP2 is required to augment MDA5-dependent signaling. PMID:19208642

  10. Oil Oil Everywhere

    NSDL National Science Digital Library

    Lisa Cartwright

    2010-01-01

    This lesson plan makes real world connections as students explore the ability to estimate the surface area of an oil spill. The lesson provides surface area information about the 2010 oil spill in the Gulf of Mexico, and gives students opportunities to estimate small oil spills of their own making. This lesson includes two students activity sheets, one fractional amount overhead sheet, assessment and extension suggestions, and questions for reflection.

  11. Pandora’s Well: Hubris, Deregulation, Fossil Fuels, and the BP Oil Disaster in the Gulf

    Microsoft Academic Search

    Anthony E. Ladd

    2012-01-01

    The BP oil disaster in the Gulf of Mexico—the largest environmental disaster in U.S. history—represents far more than an oil rig “accident” caused by human error, mechanical failure, or poor engineering decisions driven by an industry mantra of “Drill, Baby, Drill!” At its roots are deeper questions about corporate power, corruption, and accountability; technological risk; government deregulation; fossil fuel dependence;

  12. THRESHOLD STUDIES ON TNT, COMPOSITION B, C-4, AND ANFO EXPLOSIVES USING THE STEVEN IMPACT TEST

    Microsoft Academic Search

    K S Vandersall; L L Switzer; F Garcia

    2006-01-01

    Steven Impact Tests were performed at low velocity on the explosives TNT (trinitrotolulene), Composition B (63% RDX, 36% TNT, and 1% wax by weight), C-4 (91% RDX, 5.3% Di (2-ethylhexyl) sebacate, 2.1% Polyisobutylene, and 1.6% motor oil by weight) and ANFO (94% ammonium Nitrate with 6% Fuel Oil) in attempts to obtain a threshold for reaction. A 76 mm helium

  13. Stress and accidents in the offshore oil and gas industry

    SciTech Connect

    Sutherland, V.J.; Cooper, C.L.

    1991-01-01

    This book is a comprehensive analysis of occupational stress and accidents among personnel working in the European offshore oil and gas industry. Identifies sources of stress and predicts stressor outcomes. Examines job dissatisfaction, mental well-being and their relation to accidents. Also explores the differences within occupational status (operator versus contractor) and type of installation (drilling rigs versus fixed production platforms). Conclusions presented include the growing need for extensive management involvement, responsibility, and understanding in this exceptionally high environmental stress industry.

  14. Adaptive Fuzzy Control Technology for Automatic Oil Drilling System

    Microsoft Academic Search

    Qingjie Zhao; Fasheng Wang; Wei Wang; Hongbin Deng

    2007-01-01

    The paper proposes an adaptive fuzzy control method for the new oil rigs of ZJ30DB series with AC frequency converters. The assistant motor and its gearing work as executing system. Considering the time-delay, time-variability and nonlinearity of controlled objects, we design a double-loop control system in order to control the drill pressure tending to an expected value. Because it is

  15. Core collapse supernovae: magnetorotational explosion

    E-print Network

    G. S. Bisnovatyi-Kogan; S. G. Moiseenko; N. V. Ardeljan

    2005-11-10

    Core-collapse supernovae are connected with formation of neutron stars. Part of the gravitation energy is transformed into the energy of the explosion, observed in SN II, SN Ib,c type supernovae. The mechanism of transformation is not simple, because the overwhelming majority of the energy is going into weakly interacting neutrino. The attempts to use this energy for the explosion were not successful during about 40 years of investigation. We consider the explosion mechanism in which the source of energy is the rotation, and magnetic field serves for the transformation of the rotation energy into the energy of explosion. 2-D MHD simulations of this mechanism were performed. After the collapse the core consists of a rapidly rotating proto-neutron star with a differentially rotating envelope. The toroidal part of the magnetic energy generated by the differential rotation grows as quadratic function with time at the initial stage of the evolution of the magnetic field. The linear growth of the toroidal magnetic field is terminated by the development of magnetohydrodynamic instability, when the twisted toroidal component strongly exceeds the poloidal field, leading to a drastic acceleration in the growth of magnetic energy. At the moment when the magnetic pressure becomes comparable to the gas pressure at the periphery of the proto-neutron star the MHD compression wave appears and goes through the envelope of the collapsed core. It transforms into the fast MHD shock and produces a supernova explosion. Our simulations give the energy of the explosion $0.6\\cdot 10^{51}$ ergs. The amount of the mass ejected by the explosion is $\\sim 0.14M_\\odot$. The implicit numerical method, based on the Lagrangian triangular grid of variable structure, was used for the simulations.

  16. Integrating Oil Debris and Vibration Gear Damage Detection Technologies Using Fuzzy Logic

    NASA Technical Reports Server (NTRS)

    Dempsey, Paula J.; Afjeh, Abdollah A.

    2002-01-01

    A diagnostic tool for detecting damage to spur gears was developed. Two different measurement technologies, wear debris analysis and vibration, were integrated into a health monitoring system for detecting surface fatigue pitting damage on gears. This integrated system showed improved detection and decision-making capabilities as compared to using individual measurement technologies. This diagnostic tool was developed and evaluated experimentally by collecting vibration and oil debris data from fatigue tests performed in the NASA Glenn Spur Gear Fatigue Test Rig. Experimental data were collected during experiments performed in this test rig with and without pitting. Results show combining the two measurement technologies improves the detection of pitting damage on spur gears.

  17. Molecular characterization, expression patterns, and subcellular localization of RIG-I in the Jinding duck (Anas platyrhynchos domesticus).

    PubMed

    Chen, Yang; Zhang, Yang; Huang, Zhengyang; Xu, Qi; Zhu, Zhen; Tong, Yiyu; Yu, Qinmin; Ding, Jiatong; Chen, Guohong

    2013-12-01

    Retinoic acid-inducible gene I (RIG-I)-like receptors (RLRs) have recently been identified as cytoplasmic sensors for RNA virus. Recent research has shown that RIG-I, a member of this family, play an important role in innate immunity. In this study, we cloned the RIG-I gene from Jinding duck by reverse transcription polymerase chain reaction (RT-PCR) and rapid amplification of cDNA ends (RACE). We determined that the cDNA of duRIG-I contains a 14-bp 5' UTR, a 2802-bp open reading frame, and alternative 3' UTRs (295-bp and 927-bp) and encodes a polypeptide of 933 amino acids. Based on this sequence, the duRIG-I protein is predicted to have conserved domains typical of RLRs. In addition, duRIG-I was found to be distributed throughout DF1 cells by indirect immunofluorescence, as predicted. duRIG-I mRNA was scarcely detected in healthy tissues by semi-quantitative RT-PCR (sqRT-PCR). To study the role of RIG-I in innate immunity, we used synthetic double-stranded RNA to mimic viral infection in vivo and detected duRIG-I transcripts in spleen and liver by quantitative real-time PCR (qRT-PCR). The expression of duRIG-I mRNA was significantly elevated at 8h post-injection (P < 0.05) and was indistinguishable from control levels at other time points (P > 0.05). These results suggest that duRIG-I plays an important role in innate immune responses to double-stranded RNA viruses and warrant further studies to reveal the possible mechanism. PMID:23916689

  18. Operational approach for oil spill monitoring

    NASA Astrophysics Data System (ADS)

    Franca, Gutemberg B.; Landau, Luiz; Tores, Audalio R., Jr.; Drumond, Jose A. L.; Fragoso, Mauricio R.; De Almeida, Ricardo C.; Cunha, Gerson G.; Pedroso, Enrico C.; Beisl, Carlos H.

    2003-05-01

    This paper presents the methodological approach of the oil spill monitoring system that is being put into operation by the National Petroleum Agency (NPA) in Brazil. The methodology is based on integrated analysis of multi-sensor data which includes satellites products, such as, GOES and AVHRR Sea Surface Temperature (SST), SeaWiFs chlorophyll concentration, QuikScat near sea surface wind field, GOES and AVHRR convective rain areas, and Synthetic Aperture RADAR (SAR) data from RADARSAT-1 satellite. The methodology is implemented by means of a system composed by four subsystems called, data reception (SAR, GOES, NOAA and QuikScat), Integrator, hydrodynamic model and database. The methodology was applied to the accidental oil spill caused by PETROBRAS oil rig P-36. A RADARSAT-1 image was acquired during accident period at 21:07 (GMT) on 22nd of March 2001 and used. The results are presented and discussed.

  19. Thermodynamic States in Explosion Fields

    SciTech Connect

    Kuhl, A L

    2009-10-16

    Here we investigate the thermodynamic states occurring in explosion fields from the detonation of condensed explosives in air. In typical applications, the pressure of expanded detonation products gases is modeled by a Jones-Wilkins-Lee (JWL) function: P{sub JWL} = f(v,s{sub CJ}); constants in that function are fit to cylinder test data. This function provides a specification of pressure as a function of specific volume, v, along the expansion isentrope (s = constant = s{sub CJ}) starting at the Chapman-Jouguet (CJ) state. However, the JWL function is not a fundamental equation of thermodynamics, and therefore gives an incomplete specification of states. For example, explosions inherently involve shock reflections from surfaces; this changes the entropy of the products, and in such situations the JWL function provides no information on the products states. In addition, most explosives are not oxygen balanced, so if hot detonation products mix with air, they after-burn, releasing the heat of reaction via a turbulent combustion process. This raises the temperature of explosion products cloud to the adiabatic flame temperature ({approx}3,000K). Again, the JWL function provides no information on the combustion products states.

  20. Airborne remote sensing for Deepwater Horizon oil spill emergency response

    NASA Astrophysics Data System (ADS)

    Kroutil, Robert T.; Shen, Sylvia S.; Lewis, Paul E.; Miller, David P.; Cardarelli, John; Thomas, Mark; Curry, Timothy; Kudaraskus, Paul

    2010-08-01

    On April 28, 2010, the Environmental Protection Agency's (EPA) Airborne Spectral Photometric Environmental Collection Technology (ASPECT) aircraft was deployed to Gulfport, Mississippi to provide airborne remotely sensed air monitoring and situational awareness data and products in response to the Deepwater Horizon oil rig disaster. The ASPECT aircraft was released from service on August 9, 2010 after having flown over 75 missions that included over 250 hours of flight operation. ASPECT's initial mission responsibility was to provide air quality monitoring (i.e., identification of vapor species) during various oil burning operations. The ASPECT airborne wide-area infrared remote sensing spectral data was used to evaluate the hazard potential of vapors being produced from open water oil burns near the Deepwater Horizon rig site. Other significant remote sensing data products and innovations included the development of an advanced capability to correctly identify, locate, characterize, and quantify surface oil that could reach beaches and wetland areas. This advanced identification product provided the Incident Command an improved capability to locate surface oil in order to improve the effectiveness of oil skimmer vessel recovery efforts directed by the US Coast Guard. This paper discusses the application of infrared spectroscopy and multispectral infrared imagery to address significant issues associated with this national crisis. More specifically, this paper addresses the airborne remote sensing capabilities, technology, and data analysis products developed specifically to optimize the resources and capabilities of the Deepwater Horizon Incident Command structure personnel and their remediation efforts.

  1. Developmental test report, assessment of XT-70E percussion drill rig operation in tank farms

    SciTech Connect

    Dougherty, L.F., Westinghouse Hanford

    1996-09-10

    The following report documents the testing of the XT-70E percussion drill rig for use in the 241-SX Tank Farm. The test is necessary to support evaluation of the safety and authorization level of the proposed activity of installing up to three new drywells in the 241- SX Tank Farm. The proposed activity plans to install drywells by percussion drilling 7 inch O.D./6 inch I.D. pipe in close proximity of underground storage tanks and associated equipment. The load transmitted from the drill rig`s percussion hammer through the ground to the tank structure and equipment is not known and therefore testing is required to ensure the activity is safe and authorized.

  2. Segmented negative-strand RNA viruses and RIG-I: divide (your genome) and rule.

    PubMed

    Weber, Michaela; Weber, Friedemann

    2014-08-01

    The group of negative-stranded RNA viruses (NSVs) with a segmented genome comprises pathogens like influenza virus (eight segments), Rift Valley fever virus and Hantavirus (three segments), or Lassa virus (two segments). Partitioning the genome allows rapid evolution of new strains by reassortment. Each segment carries a short double-stranded (ds) 'panhandle' structure which serves as promoter. Similar dsRNA structures, however, represent the optimal ligand for RIG-I, a cytoplasmic pathogen sensor of the antiviral interferon response. Thus, segmenting a virus genome can entail an increased RIG-I sensitivity. Here, we outline the astonishingly diverse and efficient strategies by which segmented NSVs are compensating for the elevated number of RIG-I ligands in their genome. PMID:24930021

  3. RIG-I knockdown impedes neurogenesis in a murine model of Japanese encephalitis.

    PubMed

    Mukherjee, Sriparna; Ghosh, Sourish; Nazmi, Arshed; Basu, Anirban

    2015-02-01

    Retinoic acid inducible gene I (RIG-I) is a well established pattern recognition receptor (PRR) in neurons infected with Japanese encephalitis virus (JEV) as reported previously from our laboratory. Japanese encephalitis (JE) virus infection in brain has been shown to decrease the proliferation of neural stem/progenitor cells (NSPCs) which has its implications in neurological sequelae in JE survivors. We have found that ablation of RIG-I both in vivo and in vitro models results in significant decrease in NSPC proliferation post JEV infection. We hypothesize that knockdown of RIG-I diminishes the expression of antiviral molecules resulting in an increase in viral replication, which in turn results in enhancement of the expression of cell cycle inhibitors, hence affecting the proliferation of NSPCs. PMID:25077467

  4. A new rig for standardized craniofacial photography put to the test.

    PubMed

    Stephan, Carl N; Clement, John G; Owen, Chris D; Dobrostanski, Tad; Owen, Allan

    2004-03-01

    This article describes and tests a photography rig that has been built at the University of Melbourne, Australia, specifically for the purpose of taking rapid and highly standardized craniofacial photographs, in simultaneous views of front and profile. The rig uses a novel projected light range-finding system that has been designed for easy and accurate positioning of subjects, in the natural head position, at precise distances from the frontal camera. Results of experiments examining the intraobserver error of multiple photographs taken on the rig indicate that high-quality, repeatable photographs can be taken after a reasonably large amount of time has lapsed between photography sessions (e.g., 30 days). This study also indicates that some variability remains between photographs even when highly standardized protocols are followed. Consequently, it is expected that the variation between photographs with limited standardization is much larger and more likely to cause significant errors in any comparisons. PMID:15108872

  5. Mach 0.3 Burner Rig Facility at the NASA Glenn Materials Research Laboratory

    NASA Technical Reports Server (NTRS)

    Fox, Dennis S.; Miller, Robert A.; Zhu, Dongming; Perez, Michael; Cuy, Michael D.; Robinson, R. Craig

    2011-01-01

    This Technical Memorandum presents the current capabilities of the state-of-the-art Mach 0.3 Burner Rig Facility. It is used for materials research including oxidation, corrosion, erosion and impact. Consisting of seven computer controlled jet-fueled combustors in individual test cells, these relatively small rigs burn just 2 to 3 gal of jet fuel per hour. The rigs are used as an efficient means of subjecting potential aircraft engine/airframe advanced materials to the high temperatures, high velocities and thermal cycling closely approximating actual operating environments. Materials of various geometries and compositions can be evaluated at temperatures from 700 to 2400 F. Tests are conducted not only on bare superalloys and ceramics, but also to study the behavior and durability of protective coatings applied to those materials.

  6. Characterization of Ceramic Matrix Composite Fasteners Exposed in a Combustion Liner Rig Test

    NASA Technical Reports Server (NTRS)

    Verrilli, Michael J.; Brewer, David; Gray, Hugh R. (Technical Monitor)

    2002-01-01

    Combustion tests on SiC/SiC CMC (Ceramic Matrix Composite) components were performed in an aircraft combustion environment using the Rich-burn, Quick-quench, Lean-burn (RQL) sector rig. SiC/SiC fasteners were used to attach several of these components to the metallic rig structure. The effect of combustion exposure on the fastener material was characterized via microstructural examination. Fasteners were also destructively tested, after combustion exposure, and the failure loads of fasteners exposed in the sector rig were compared to those of as-manufactured fasteners. Combustion exposure reduced the fastener failure load by 50% relative to the as-manufactured fasteners for exposure times ranging from 50 to 260 hours. The fasteners exposed in the combustion environment demonstrated failure loads that varied with failure mode. Fasteners that had the highest average failure load, failed in the same manner as the unexposed fasteners.

  7. Hydrogen Fuel Capability Added to Combustor Flametube Rig

    NASA Technical Reports Server (NTRS)

    Frankenfield, Bruce J.

    2003-01-01

    Facility capabilities have been expanded at Test Cell 23, Research Combustor Lab (RCL23) at the NASA Glenn Research Center, with a new gaseous hydrogen fuel system. The purpose of this facility is to test a variety of fuel nozzle and flameholder hardware configurations for use in aircraft combustors. Previously, this facility only had jet fuel available to perform these various combustor flametube tests. The new hydrogen fuel system will support the testing and development of aircraft combustors with zero carbon dioxide (CO2) emissions. Research information generated from this test rig includes combustor emissions and performance data via gas sampling probes and emissions measuring equipment. The new gaseous hydrogen system is being supplied from a 70 000-standard-ft3 tube trailer at flow rates up to 0.05 lb/s (maximum). The hydrogen supply pressure is regulated, and the flow is controlled with a -in. remotely operated globe valve. Both a calibrated subsonic venturi and a coriolis mass flowmeter are used to measure flow. Safety concerns required the placement of all hydrogen connections within purge boxes, each of which contains a small nitrogen flow that is vented past a hydrogen detector. If any hydrogen leaks occur, the hydrogen detectors alert the operators and automatically safe the facility. Facility upgrades and modifications were also performed on other fluids systems, including the nitrogen gas, cooling water, and air systems. RCL23 can provide nonvitiated heated air to the research combustor, up to 350 psig at 1200 F and 3.0 lb/s. Significant modernization of the facility control systems and the data acquisition systems was completed. A flexible control architecture was installed that allows quick changes of research configurations. The labor-intensive hardware interface has been removed and changed to a software-based system. In addition, the operation of this facility has been greatly enhanced with new software programming and graphic operator interface stations. Glenn s RCL23 facility systems were successfully checked out in the spring of 2002, and hydrogen combustor research testing began in the summer of 2002.

  8. Bowel preparation and the risk of explosion during colonoscopic polypectomy.

    PubMed

    Avgerinos, A; Kalantzis, N; Rekoumis, G; Pallikaris, G; Arapakis, G; Kanaghinis, T

    1984-04-01

    Concentration of oxygen, methane, and hydrogen were measured in intracolonic gas samples aspirated through the colonoscope at the time of colonoscopy from 46 patients. Of the above patients 20 prepared either with mannitol (n = 10) or with castor oil (n = 10) had the instrument passed to the caecum without air insufflation or suction. After mannitol, mean intracolonic hydrogen concentration (4.07%) was significantly higher (p less than 0.001) than after castor oil (0.51%). Mean oxygen and methane concentrations were approximately similar. Potentially explosive concentrations of hydrogen (greater than 4.1%) and or methane (greater than 5%) were present in 6/10 patients given mannitol and 2/10 patients given castor oil. Nevertheless only one patient from each group had coexisting oxygen concentrations of more than 5% producing thus a combustile mixture. Routine colonoscopy (using air insufflation and suction) was performed in 26 patients prepared with mannitol. Mean intracolonic hydrogen and methane was 0.63% and 0.88% respectively. The highest recorded concentration of hydrogen was 2.6%, and of methane 2.1%, while all patients had oxygen concentrations of more than 5%. It is suggested, therefore, that routine insufflation and suction before colonoscopic electrosurgical polypectomy should result in safe levels of these gases. The remote possibility of pockets of undiluted gas in explosive concentration, however, indicates the use of an inert gas such as carbon dioxide if mannitol preparation is used before electrosurgery. PMID:6423457

  9. On the Use of Excitation-Emission Matrix Spectroscopy (EEMs) to Detect Dissolved\\/Dispersed Oil in the Nearshore and Offshore Waters of the Louisiana Coast

    Microsoft Academic Search

    E. J. D'Sa; E. Overton; A. M. Freeman

    2010-01-01

    The massive amount of oil and dispersants in seawater due to the Deepwater Horizon oil rig accident impacted both nearshore and offshore waters of the Louisiana coast and neighboring states. Processes that the spilled oil undergoes include dispersion and dissolution in seawater. Excitation-emission matrix fluorescence spectroscopy (EEMs) along with gas-chromatography-mass spectroscopy (GC-MS) have been shown to be effective in detecting

  10. Pattern formation in colloidal explosions

    E-print Network

    Arthur V. Straube; Ard A. Louis; Jörg Baumgartl; Clemens Bechinger; Roel P. A. Dullens

    2011-07-23

    We study the non-equilibrium pattern formation that emerges when magnetically repelling colloids, trapped by optical tweezers, are abruptly released, forming colloidal explosions. For multiple colloids in a single trap we observe a pattern of expanding concentric rings. For colloids individually trapped in a line, we observe explosions with a zigzag pattern that persists even when magnetic interactions are much weaker than those that break the linear symmetry in equilibrium. Theory and computer simulations quantitatively describe these phenomena both in and out of equilibrium. An analysis of the mode spectrum allows us to accurately quantify the non-harmonic nature of the optical traps. Colloidal explosions provide a new way to generate well-characterized non-equilibrium behaviour in colloidal systems.

  11. The vapor pressures of explosives

    SciTech Connect

    Ewing, Robert G.; Waltman, Melanie J.; Atkinson, David A.; Grate, Jay W.; Hotchkiss, Peter

    2013-01-05

    The vapor pressures of many explosive compounds are extremely low and thus determining accurate values proves difficult. Many researchers, using a variety of methods, have measured and reported the vapor pressures of explosives compounds at single temperatures, or as a function of temperature using vapor pressure equations. There are large variations in reported vapor pressures for many of these compounds, and some errors exist within individual papers. This article provides a review of explosive vapor pressures and describes the methods used to determine them. We have compiled primary vapor pressure relationships traceable to the original citations and include the temperature ranges for which they have been determined. Corrected values are reported as needed and described in the text. In addition, after critically examining the available data, we calculate and tabulate vapor pressures at 25 °C.

  12. Explosive evaporation in solar flares

    NASA Technical Reports Server (NTRS)

    Fisher, George H.

    1987-01-01

    This paper develops a simple analytical model for the phenomenon of 'explosive evaporation' driven by nonthermal electron heating in solar flares. The model relates the electron energy flux and spectrum, plus details of the preflare atmosphere, to the time scale for explosive evaporation to occur, the maximum pressure and temperature to be reached, rough estimates for the UV pulse emission flux and duration, and the evolution of the blueshifted component of the soft X-ray lines. An expression is given for the time scale for buildup to maximum pressures and the onset of rapid motion of the explosively evaporating plasma. This evaporation can excite a rapid response of UV line and continuum emission. The emission lines formed in the plasma approach a given emissivity-weighted blueshift speed.

  13. Optimal dynamic detection of explosives

    SciTech Connect

    Moore, David Steven [Los Alamos National Laboratory; Mcgrane, Shawn D [Los Alamos National Laboratory; Greenfield, Margo T [Los Alamos National Laboratory; Scharff, R J [Los Alamos National Laboratory; Rabitz, Herschel A [PRINCETON UNIV; Roslund, J [PRINCETON UNIV

    2009-01-01

    The detection of explosives is a notoriously difficult problem, especially at stand-off distances, due to their (generally) low vapor pressure, environmental and matrix interferences, and packaging. We are exploring optimal dynamic detection to exploit the best capabilities of recent advances in laser technology and recent discoveries in optimal shaping of laser pulses for control of molecular processes to significantly enhance the standoff detection of explosives. The core of the ODD-Ex technique is the introduction of optimally shaped laser pulses to simultaneously enhance sensitivity of explosives signatures while reducing the influence of noise and the signals from background interferents in the field (increase selectivity). These goals are being addressed by operating in an optimal nonlinear fashion, typically with a single shaped laser pulse inherently containing within it coherently locked control and probe sub-pulses. With sufficient bandwidth, the technique is capable of intrinsically providing orthogonal broad spectral information for data fusion, all from a single optimal pulse.

  14. Saccharification of explosively dried corn

    SciTech Connect

    Robertson, G.H.; Zaragosa, E.M.; Pavlath, A.E.

    1986-08-01

    Very rapid or explosive drying of grains such as corn leads to obvious physical changes in the macrostructure of the grain kernel, probable alteration in starch molecular structure, and reduction in starch average molecular weight. These changes lead to greater susceptibility to attack by liquefying and saccharifying enzymes. Rates of formation of nonreducing and reducing sugars by liquefying and saccharifying enzymes applied to explosively dried and milled yellow dent corn and small-kernel flint corn were 3.3-10.6 times greater then rates for the normally milled grains. The enzymatic conversion of explosively dried flint corn containing absorbed ethyl alcohol, as would be the case if it had been used as an adsorbent to dewater aqueous ethyl alcohol, was not significantly different from that of ethyl-alcohol-free flint corn. 15 references.

  15. Seismic coupling of nuclear explosions

    SciTech Connect

    Larson, D.B. (ed.) (Defense Advanced Research Projects Agency, Arlington, VA (United States))

    1989-01-01

    The new Giant Magnet Experimental Facility employing digital recording of explosion induced motion has been constructed and successfully tested. Particle velocity and piezoresistance gage responses can be measured simultaneously thus providing the capability for determining the multi-component stress-strain history in the test material. This capability provides the information necessary for validation of computer models used in simulation of nuclear underground testing, chemical explosion testing, dynamic structural response, earth penetration response, and etc. This report discusses fully coupled and cavity decoupled explosions of the same energy (0.622 kJ) were carried out as experiments to study wave propagation and attenuation in polymethylmethacrylate (PMMA). These experiments produced particle velocity time histories at strains from 2 [times] 10[sup [minus]3] to as low as 5.8 [times] 10[sup [minus]6]. Other experiments in PMMA, reported recently by Stout and Larson[sup 8] provide additional particle velocity data to strains of 10[sup [minus]1].

  16. Insensitive fuze train for high explosives

    DOEpatents

    Cutting, Jack L. (Livermore, CA); Lee, Ronald S. (Livermore, CA); Von Holle, William G. (Livermore, CA)

    1994-01-01

    A generic insensitive fuze train to initiate insensitive high explosives, such as PBXW-124. The insensitive fuze train uses a slapper foil to initiate sub-gram quantities of an explosive, such as HNS-IV or PETN. This small amount of explosive drives a larger metal slapper onto a booster charge of an insensitive explosive, such as UF-TATB. The booster charge initiates a larger charge of an explosive, such as LX-17, which in turn, initiates the insensitive high explosive, such as PBXW-124.

  17. Systems analysis of a RIG-I agonist inducing broad spectrum inhibition of virus infectivity.

    PubMed

    Goulet, Marie-Line; Olagnier, David; Xu, Zhengyun; Paz, Suzanne; Belgnaoui, S Mehdi; Lafferty, Erin I; Janelle, Valérie; Arguello, Meztli; Paquet, Marilene; Ghneim, Khader; Richards, Stephanie; Smith, Andrew; Wilkinson, Peter; Cameron, Mark; Kalinke, Ulrich; Qureshi, Salman; Lamarre, Alain; Haddad, Elias K; Sekaly, Rafick Pierre; Peri, Suraj; Balachandran, Siddharth; Lin, Rongtuan; Hiscott, John

    2013-01-01

    The RIG-I like receptor pathway is stimulated during RNA virus infection by interaction between cytosolic RIG-I and viral RNA structures that contain short hairpin dsRNA and 5' triphosphate (5'ppp) terminal structure. In the present study, an RNA agonist of RIG-I was synthesized in vitro and shown to stimulate RIG-I-dependent antiviral responses at concentrations in the picomolar range. In human lung epithelial A549 cells, 5'pppRNA specifically stimulated multiple parameters of the innate antiviral response, including IRF3, IRF7 and STAT1 activation, and induction of inflammatory and interferon stimulated genes - hallmarks of a fully functional antiviral response. Evaluation of the magnitude and duration of gene expression by transcriptional profiling identified a robust, sustained and diversified antiviral and inflammatory response characterized by enhanced pathogen recognition and interferon (IFN) signaling. Bioinformatics analysis further identified a transcriptional signature uniquely induced by 5'pppRNA, and not by IFN?-2b, that included a constellation of IRF7 and NF-kB target genes capable of mobilizing multiple arms of the innate and adaptive immune response. Treatment of primary PBMCs or lung epithelial A549 cells with 5'pppRNA provided significant protection against a spectrum of RNA and DNA viruses. In C57Bl/6 mice, intravenous administration of 5'pppRNA protected animals from a lethal challenge with H1N1 Influenza, reduced virus titers in mouse lungs and protected animals from virus-induced pneumonia. Strikingly, the RIG-I-specific transcriptional response afforded partial protection from influenza challenge, even in the absence of type I interferon signaling. This systems approach provides transcriptional, biochemical, and in vivo analysis of the antiviral efficacy of 5'pppRNA and highlights the therapeutic potential associated with the use of RIG-I agonists as broad spectrum antiviral agents. PMID:23633948

  18. Systems Analysis of a RIG-I Agonist Inducing Broad Spectrum Inhibition of Virus Infectivity

    PubMed Central

    Goulet, Marie-Line; Olagnier, David; Xu, Zhengyun; Paz, Suzanne; Belgnaoui, S. Mehdi; Lafferty, Erin I.; Janelle, Valérie; Arguello, Meztli; Paquet, Marilene; Ghneim, Khader; Richards, Stephanie; Smith, Andrew; Wilkinson, Peter; Cameron, Mark; Kalinke, Ulrich; Qureshi, Salman; Lamarre, Alain; Haddad, Elias K.; Sekaly, Rafick Pierre; Peri, Suraj; Balachandran, Siddharth; Lin, Rongtuan; Hiscott, John

    2013-01-01

    The RIG-I like receptor pathway is stimulated during RNA virus infection by interaction between cytosolic RIG-I and viral RNA structures that contain short hairpin dsRNA and 5? triphosphate (5?ppp) terminal structure. In the present study, an RNA agonist of RIG-I was synthesized in vitro and shown to stimulate RIG-I-dependent antiviral responses at concentrations in the picomolar range. In human lung epithelial A549 cells, 5?pppRNA specifically stimulated multiple parameters of the innate antiviral response, including IRF3, IRF7 and STAT1 activation, and induction of inflammatory and interferon stimulated genes - hallmarks of a fully functional antiviral response. Evaluation of the magnitude and duration of gene expression by transcriptional profiling identified a robust, sustained and diversified antiviral and inflammatory response characterized by enhanced pathogen recognition and interferon (IFN) signaling. Bioinformatics analysis further identified a transcriptional signature uniquely induced by 5?pppRNA, and not by IFN?-2b, that included a constellation of IRF7 and NF-kB target genes capable of mobilizing multiple arms of the innate and adaptive immune response. Treatment of primary PBMCs or lung epithelial A549 cells with 5?pppRNA provided significant protection against a spectrum of RNA and DNA viruses. In C57Bl/6 mice, intravenous administration of 5?pppRNA protected animals from a lethal challenge with H1N1 Influenza, reduced virus titers in mouse lungs and protected animals from virus-induced pneumonia. Strikingly, the RIG-I-specific transcriptional response afforded partial protection from influenza challenge, even in the absence of type I interferon signaling. This systems approach provides transcriptional, biochemical, and in vivo analysis of the antiviral efficacy of 5?pppRNA and highlights the therapeutic potential associated with the use of RIG-I agonists as broad spectrum antiviral agents. PMID:23633948

  19. CHARACTERISATION OF A REFURBISHED 1½ STAGE TURBINE TEST RIG FOR FLOWFIELD MAPPING BEHIND BLADING WITH NON-AXISYMMETRIC CONTOURED ENDWALLS

    Microsoft Academic Search

    Glen Snedden; Thomas Roos; Dwain Dunn; David Gregory-Smith

    This paper describes the results, to date, of collaboration between the CSIR (South Africa) and Durham University (UK). Furthermore the paper intends to demonstrate the capability and suitability of a refurbished 1½ stage turbine test rig to performing tests on blading featuring non-axisymmetric endwalls in a low- speed, rotating environment. The test rig has been refurbished in such a way

  20. Design and Analysis of a Test Rig for Modeling the Bit/Formation Interface in Petroleum Drilling Applications

    E-print Network

    Wilson, Joshua Kyle

    2013-04-11

    ............................................................................................................... 154 APPENDIX A ? INTERFACE LAWS .......................................................................... 168 APPENDIX B ? GENERAL RIG ASSEMBLY DRAWINGS ..................................... 174 APPENDIX C ? ALTERNATIVE RIG ANALYSIS... Bits (From [13]) ................................... 5 Figure 1.6: Generalized PDC Bit Model (From [52]) .................................................... 7 Figure 1.7: Bit Layout Variations (a ?[61], b ?[62], c ?[54], d ?[63...

  1. Lightning Protection for Explosive Facilities

    SciTech Connect

    Ong, M

    2001-12-01

    Lawrence Livermore National Laboratory funds construction of lightning protection systems to protect explosive processing and storage facilities. This paper provides an intuitive understanding of the lighting risks and types of lightning protection available. Managers can use this information to decide if limited funds should be spent constructing a lightning protection system for their own facilities. This paper answers the following questions: (1) Why do you need lightning protection systems? (2) How do lightning protection systems work? and (3) Why are there no documented cases of lightning problems at existing explosive facilities?

  2. ICPP custom dissolver explosion recovery

    SciTech Connect

    Demmer, R.; Hawk, R.

    1992-06-11

    This report discusses the recovery from the February 9, 1991 small scale explosion in a custom processing dissolver at the Idaho Chemical Processing Plant. Custom processing is a small scale dissolution facility which processes nuclear material in an economical fashion. The material dissolved in this facility was uranium metal, uranium oxides, and uranium/fissium alloy in nitric acid. The paper explained the release of fission material, and the decontamination and recovery of the fuel material. The safety and protection procedures were also discussed. Also described was the chemical analysis which was used to speculate the most probable cause of the explosion. (MB)

  3. Explosive coalescence of magnetic islands

    NASA Technical Reports Server (NTRS)

    Tajima, T.; Sakai, J.-I.

    1986-01-01

    Simulation results from both the EM collisionless particle code and the MHD particle code reveal an explosive reconnection process associated with nonlinear evolution of the coalescence instability. The explosive coalescence is a self-similar process of magnetic collapse, and ensuing amplitude oscillations in the magnetic and electrostatic energies and temperatures are modeled by an equation of motion for the scale factor in the Sagdeev potential. This phenomenon may explain the rapid energy release of a certain class of solar flares during their impulsive phase.

  4. Test rig and particulate deposit and cleaning evaluation processes using the same

    DOEpatents

    Schroder, Mark Stewart (Hendersonville, NC); Woodmansee, Donald Ernest (Schenectady, NY); Beadie, Douglas Frank (Greer, SC)

    2002-01-01

    A rig and test program for determining the amount, if any, of contamination that will collect in the passages of a fluid flow system, such as a power plant fluid delivery system to equipment assemblies or sub-assemblies, and for establishing methods and processes for removing contamination therefrom. In the presently proposed embodiment, the rig and test programs are adapted in particular to utilize a high-pressure, high-volume water flush to remove contamination from substantially the entire fluid delivery system, both the quantity of contamination and as disposed or deposited within the system.

  5. Oxidation of a Silica-Containing Material in a Mach 0.3 Burner Rig

    NASA Technical Reports Server (NTRS)

    Nguyen, QuynhGiao N.; Cuy, Michael D.; Gray, Hugh R. (Technical Monitor)

    2002-01-01

    A primarily silica-containing material with traces of organic compounds, as well as aluminum and calcium additions, was exposed to a Mach 0.3 burner rig at atmospheric pressure using jet fuel. The sample was exposed for 5 continuous hours at 1370 C. Post exposure x-ray diffraction analyses indicate formation of cristobalite, quartz, NiO and Spinel (Al(Ni)CR2O4). The rig hardware is composed of a nickel-based superalloy with traces of Fe. These elements are indicated in the energy dispersive spectroscopy (EDS) results. This material was studied as a candidate for high temperature applications under an engine technology program.

  6. Explosive response model evaluation using the explosive H6

    Microsoft Academic Search

    Gerrit T. Sutherland; Joseph Burns

    2000-01-01

    Reactive rate model parameters for a two term Lee Tarver [simplified ignition and growth (SIG)] model were obtained for the explosive H6 from modified gap test data. These model was used to perform simulations of the underwater sensitivity test (UST) using the CTH hydrocode. Reaction was predicted in the simulations for the same water gaps that reaction was observed in

  7. Sandia Explosive Inventory and Information System

    SciTech Connect

    Clements, D.A.

    1994-08-01

    The Explosive Inventory and Information System (EIS) is being developed and implemented by Sandia National Laboratories (SNL) to incorporate a cradle to grave structure for all explosives and explosive containing devices and assemblies at SNL from acquisition through use, storage, reapplication, transfer or disposal. The system does more than track all material inventories. It provides information on material composition, characteristics, shipping requirements; life cycle cost information, plan of use; and duration of ownership. The system also provides for following the processes of explosive development; storage review; justification for retention; Resource, Recovery and Disposition Account (RRDA); disassembly and assembly; and job description, hazard analysis and training requirements for all locations and employees involved with explosive operations. In addition, other information systems will be provided through the system such as the Department of Energy (DOE) and SNL Explosive Safety manuals, the Navy`s Department of Defense (DoD) Explosive information system, and the Lawrence Livermore National Laboratories (LLNL) Handbook of Explosives.

  8. 14 CFR 420.63 - Explosive siting.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ...maximum quantities of liquid and solid propellants and other explosives to be located...the class and division for each solid explosive and the hazard and compatibility group for each liquid propellant; and (3) A description...

  9. 14 CFR 420.63 - Explosive siting.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ...maximum quantities of liquid and solid propellants and other explosives to be located...the class and division for each solid explosive and the hazard and compatibility group for each liquid propellant; and (3) A description...

  10. Explosion at Ingham Colliery, Thornhill, Yorkshire 

    E-print Network

    Bryan, A. M.

    MINISTRY OF FUEL AND POWER EXPLOSION AT INGHAM COLLIERY, THORNHILL, YORKSHIRE REPORT On the Causes of, and Circumstances attending the Explosion which occurred at Ingham Colliery Thornhill, Yorkshire) on the 9th September, ...

  11. Explosion at Harrington No. 10 Colliery, Cumberland 

    E-print Network

    Felton, John

    MINISTRY OF FUEL AND POWER EXPLOSION AT HARRINGTON No. 10 COLLIERY, CUMBERLAND REPORT On the Causes of, and Circumstances attending the Explosion which occurred at the Harrington No. 10 Colliery, Lowca,Cumberland, on ...

  12. Explosion at Hapton Valley Colliery, Lancashire 

    E-print Network

    Stephenson, H. S.

    MINISTRY OF POWER EXPLOSION AT HAPTON VALLEY COLLIERY, LANCASHIRE REPORT On the causes of, and circumstances attending, the Explosion which occurred at Hapton Valley Colliery, Lancashire, on 22nd March, 1962 By H. S. ...

  13. Astrophysics: A lithium-rich stellar explosion

    NASA Astrophysics Data System (ADS)

    Hernanz, Margarita

    2015-02-01

    The contribution of explosions known as novae to the lithium content of the Milky Way is uncertain. Radioactive beryllium, which transforms into lithium, has been detected for the first time in one such explosion. See Letter p.381

  14. Oil Spill in the Gulf of Mexico - Landsat 7 (caption embedded)

    USGS Multimedia Gallery

    On April 20, 2010, an explosion at an oil well in the Gulf of Mexico resulted in a major oil spill. Since then, emergency response efforts have been underway to contain the growing oil slick before it reaches the southern coast of the United States. Landsat imagery, acquired by the U.S. Geological ...

  15. 75 FR 56526 - National Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-16

    ...Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling AGENCY: Department...Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling (the Commission...Deepwater Horizon explosion, fire, and oil spill and to develop options to guard...

  16. 75 FR 47584 - National Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-08-06

    ...Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling AGENCY: Department...Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling (the Commission...Deepwater Horizon explosion, fire and oil spill and to develop options to guard...

  17. 75 FR 60097 - National Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-29

    ...Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling AGENCY: Department...Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling (the Commission...Deepwater Horizon explosion, fire, and oil spill and to develop options to guard...

  18. 75 FR 69652 - National Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-11-15

    ...Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling AGENCY: Department...Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling (the Commission...Deepwater Horizon explosion, fire, and oil spill and to develop options to guard...

  19. An Earth-System Approach to Understanding the Deepwater Horizon Oil Spill

    ERIC Educational Resources Information Center

    Robeck, Edward

    2011-01-01

    The Deepwater Horizon explosion on April 20, 2010, and the subsequent release of oil into the Gulf of Mexico created an ecological disaster of immense proportions. The estimates of the amounts of oil, whether for the amount released per day or the total amount of oil disgorged from the well, call on numbers so large they defy the capacity of most…

  20. hboi.fau.edu P. 1 Drill for Oil Spill Answers

    E-print Network

    Fernandez, Eduardo

    hboi.fau.edu P. 1 Drill for Oil Spill Answers Dr. Peter McCarthy examines the differences at 772-466-9876 or jmalford@hboifoundation.org. OIL SPILL ANSWERS, CONTINUED. Dr. Susan Laramore (L, Deepwater Horizon explosion, oil gushed into the Gulf of Mexico for nearly three months before a temporary

  1. 75 FR 65309 - National Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-10-22

    ...Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling AGENCY: Department...Commission on the BP Deepwater Horizon Oil Spill and Offshore Drilling (the Commission...Deepwater Horizon explosion, fire, and oil spill and to develop options to guard...

  2. Remote detector of explosive traces

    NASA Astrophysics Data System (ADS)

    Bobrovnikov, Sergey M.; Gorlov, Evgeny V.; Zharkov, Viktor I.; Panchenko, Yury N.; Aksenov, Valery A.; Kikhtenko, Andrey V.; Tivileva, Maria I.

    2014-11-01

    This paper presents the results of the research of possibility of remote detection of explosive traces using laser fragmentation/laser-induced fluorescence (LF/LIF) approach. Experimental data on the detection of traces of cyclonite in fingerprints at a distance of 4 m are presented.

  3. BEST: Baikal Explosion Seismic Transect

    Microsoft Academic Search

    H. Thybo; M. Jensen; A. R. Ross; V. Suvorov; A. Emanov; V. Seleznev; V. Soloviov; G. Tatkov; E. Perchuc

    2002-01-01

    The Baikal Explosion Seismic Transect is composed of two deep seismic profiles: one across the Baikal Rift Zone at the southern end of Lake Baikal and a second profile along the axis of the rift into the Tunga depression. The main field project was carried out in October 2003 after a pilot project (BASE) in September 2002. Our primary goal

  4. A model of vulcanian explosions

    Microsoft Academic Search

    Andrew W. Woods

    1995-01-01

    We present a model of the initial stages of the explosive eruption of magma from a volcanic conduit as occurs in Vulcanian style eruptions. We assume there is a volatile rich (1–10 wt%) mixture of magma, vaporised groundwater and exsolved volatiles, trapped at high pressure (1–100 atm) just below a plug in a volcanic conduit. If the plug disrupts, there

  5. Lead-free primary explosives

    DOEpatents

    Huynh, My Hang V.

    2010-06-22

    Lead-free primary explosives of the formula (cat).sub.Y[M.sup.II(T).sub.X(H.sub.2O).sub.6-X].sub.Z, where T is 5-nitrotetrazolate, and syntheses thereof are described. Substantially stoichiometric equivalents of the reactants lead to high yields of pure compositions thereby avoiding dangerous purification steps.

  6. Numerical Simulations of Thermobaric Explosions

    SciTech Connect

    Kuhl, A L; Bell, J B; Beckner, V E; Khasainov, B

    2007-05-04

    A Model of the energy evolution in thermobaric explosions is presented. It is based on the two-phase formulation: conservation laws for the gas and particle phases along with inter-phase interaction terms. It incorporates a Combustion Model based on the mass conservation laws for fuel, air and products; source/sink terms are treated in the fast-chemistry limit appropriate for such gas dynamic fields. The Model takes into account both the afterburning of the detonation products of the booster with air, and the combustion of the fuel (Al or TNT detonation products) with air. Numerical simulations were performed for 1.5-g thermobaric explosions in five different chambers (volumes ranging from 6.6 to 40 liters and length-to-diameter ratios from 1 to 12.5). Computed pressure waveforms were very similar to measured waveforms in all cases - thereby proving that the Model correctly predicts the energy evolution in such explosions. The computed global fuel consumption {mu}(t) behaved as an exponential life function. Its derivative {dot {mu}}(t) represents the global rate of fuel consumption. It depends on the rate of turbulent mixing which controls the rate of energy release in thermobaric explosions.

  7. Type IA Supernova Explosion Models

    Microsoft Academic Search

    Wolfgang Hillebrandt; Jens C. Niemeyer

    2000-01-01

    Because calibrated light curves of type Ia supernovae have become a major tool to determine the local expansion rate of the universe and also its geometrical structure, considerable attention has been given to models of these events over the past couple of years. There are good reasons to believe that perhaps most type Ia supernovae are the explosions of white

  8. Explosively Actuated Opening for Rapid Egress

    NASA Technical Reports Server (NTRS)

    Bement, L. J.; Bailey, J. W.; Perry, R.

    1982-01-01

    Flexible linear-shaped charge provides explosive energy to create opening and to jettison panel. Container around explosive charge protects pilot from effects of explosion. Exterior steel strip receives most of force of explosion to jettison severed panel. System allows pilot to bail out from left side of airplane by creating opening where no door exists. Egress system is simple and highly responsive, requiring minimal modifications to airplane.

  9. 30 CFR 56.6905 - Protection of explosive material.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...2010-07-01 false Protection of explosive material. 56.6905 Section 56...STANDARDS-SURFACE METAL AND NONMETAL MINES Explosives General Requirements § 56.6905 Protection of explosive material. (a) Explosive...

  10. 30 CFR 56.6905 - Protection of explosive material.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...2011-07-01 false Protection of explosive material. 56.6905 Section 56...STANDARDS-SURFACE METAL AND NONMETAL MINES Explosives General Requirements § 56.6905 Protection of explosive material. (a) Explosive...

  11. 27 CFR 555.181 - Reporting of plastic explosives.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ...2010-04-01 true Reporting of plastic explosives. 555.181 Section 555.181 Alcohol...BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE EXPLOSIVES COMMERCE IN EXPLOSIVES Marking of...

  12. 27 CFR 555.205 - Movement of explosive materials.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ...2011-04-01 2010-04-01 true Movement of explosive materials. 555.205 Section 555.205...BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE EXPLOSIVES COMMERCE IN EXPLOSIVES Storage §...

  13. 30 CFR 57.6903 - Burning explosive material.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...2012-07-01 false Burning explosive material. 57.6903 Section...STANDARDS-UNDERGROUND METAL AND NONMETAL MINES Explosives General Requirements-Surface and Underground § 57.6903 Burning explosive material. If explosive...

  14. 27 CFR 555.202 - Classes of explosive materials.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ...2011-04-01 2010-04-01 true Classes of explosive materials. 555.202 Section 555.202...BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE EXPLOSIVES COMMERCE IN EXPLOSIVES Storage §...

  15. 30 CFR 57.6905 - Protection of explosive material.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...2010-07-01 false Protection of explosive material. 57.6905 Section 57...STANDARDS-UNDERGROUND METAL AND NONMETAL MINES Explosives General Requirements-Surface and Underground § 57.6905 Protection of explosive material. (a) Explosive...

  16. 27 CFR 555.202 - Classes of explosive materials.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ...2010-04-01 2010-04-01 false Classes of explosive materials. 555.202 Section 555.202...BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE EXPLOSIVES COMMERCE IN EXPLOSIVES Storage §...

  17. 30 CFR 56.6305 - Unused explosive material.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...2014-07-01 2014-07-01 false Unused explosive material. 56.6305 Section 56.6305...STANDARDS-SURFACE METAL AND NONMETAL MINES Explosives Use § 56.6305 Unused explosive material. Unused explosive material...

  18. 27 CFR 555.205 - Movement of explosive materials.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ...2012-04-01 2010-04-01 true Movement of explosive materials. 555.205 Section 555.205...BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE EXPLOSIVES COMMERCE IN EXPLOSIVES Storage §...

  19. 30 CFR 56.6903 - Burning explosive material.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...2010-07-01 2010-07-01 false Burning explosive material. 56.6903 Section 56...STANDARDS-SURFACE METAL AND NONMETAL MINES Explosives General Requirements § 56.6903 Burning explosive material. If explosive material...

  20. 30 CFR 56.6305 - Unused explosive material.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...2010-07-01 2010-07-01 false Unused explosive material. 56.6305 Section 56.6305...STANDARDS-SURFACE METAL AND NONMETAL MINES Explosives Use § 56.6305 Unused explosive material. Unused explosive material...

  1. 30 CFR 57.6903 - Burning explosive material.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...2010-07-01 false Burning explosive material. 57.6903 Section...STANDARDS-UNDERGROUND METAL AND NONMETAL MINES Explosives General Requirements-Surface and Underground § 57.6903 Burning explosive material. If explosive...

  2. 30 CFR 75.1315 - Boreholes for explosives.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...2010-07-01 false Boreholes for explosives. 75.1315 Section 75.1315 ...SAFETY STANDARDS-UNDERGROUND COAL MINES Explosives and Blasting § 75.1315 Boreholes for explosives. (a) All explosives fired...

  3. 30 CFR 56.6905 - Protection of explosive material.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...2013-07-01 false Protection of explosive material. 56.6905 Section 56...STANDARDS-SURFACE METAL AND NONMETAL MINES Explosives General Requirements § 56.6905 Protection of explosive material. (a) Explosive...

  4. 30 CFR 57.6905 - Protection of explosive material.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...2013-07-01 false Protection of explosive material. 57.6905 Section 57...STANDARDS-UNDERGROUND METAL AND NONMETAL MINES Explosives General Requirements-Surface and Underground § 57.6905 Protection of explosive material. (a) Explosive...

  5. 30 CFR 57.6905 - Protection of explosive material.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...2011-07-01 false Protection of explosive material. 57.6905 Section 57...STANDARDS-UNDERGROUND METAL AND NONMETAL MINES Explosives General Requirements-Surface and Underground § 57.6905 Protection of explosive material. (a) Explosive...

  6. 29 CFR 1926.903 - Underground transportation of explosives.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...false Underground transportation of explosives. 1926.903 Section 1926.903...CONSTRUCTION Blasting and the Use of Explosives § 1926.903 Underground transportation of explosives. (a) All explosives or...

  7. 27 CFR 555.205 - Movement of explosive materials.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ...2014-04-01 2014-04-01 false Movement of explosive materials. 555.205 Section 555.205...BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE EXPLOSIVES COMMERCE IN EXPLOSIVES Storage §...

  8. 30 CFR 56.6305 - Unused explosive material.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...2012-07-01 2012-07-01 false Unused explosive material. 56.6305 Section 56.6305...STANDARDS-SURFACE METAL AND NONMETAL MINES Explosives Use § 56.6305 Unused explosive material. Unused explosive material...

  9. 27 CFR 555.205 - Movement of explosive materials.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ...2010-04-01 2010-04-01 false Movement of explosive materials. 555.205 Section 555.205...BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE EXPLOSIVES COMMERCE IN EXPLOSIVES Storage §...

  10. 30 CFR 57.6903 - Burning explosive material.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...2013-07-01 false Burning explosive material. 57.6903 Section...STANDARDS-UNDERGROUND METAL AND NONMETAL MINES Explosives General Requirements-Surface and Underground § 57.6903 Burning explosive material. If explosive...

  11. 27 CFR 555.202 - Classes of explosive materials.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ...2014-04-01 2014-04-01 false Classes of explosive materials. 555.202 Section 555.202...BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE EXPLOSIVES COMMERCE IN EXPLOSIVES Storage §...

  12. 30 CFR 57.6302 - Separation of explosive material.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...2012-07-01 false Separation of explosive material. 57.6302 Section...STANDARDS-UNDERGROUND METAL AND NONMETAL MINES Explosives Transportation-Surface and Underground § 57.6302 Separation of explosive material. Explosives and...

  13. 30 CFR 56.6905 - Protection of explosive material.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...2014-07-01 false Protection of explosive material. 56.6905 Section 56...STANDARDS-SURFACE METAL AND NONMETAL MINES Explosives General Requirements § 56.6905 Protection of explosive material. (a) Explosive...

  14. 30 CFR 75.1315 - Boreholes for explosives.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...2013-07-01 false Boreholes for explosives. 75.1315 Section 75.1315 ...SAFETY STANDARDS-UNDERGROUND COAL MINES Explosives and Blasting § 75.1315 Boreholes for explosives. (a) All explosives fired...

  15. 30 CFR 56.6302 - Separation of explosive material.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 2014-07-01 false Separation of explosive material. 56.6302 Section 56.6302...STANDARDS-SURFACE METAL AND NONMETAL MINES Explosives Use § 56.6302 Separation of explosive material. Explosives and blasting...

  16. 30 CFR 75.1315 - Boreholes for explosives.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...2011-07-01 false Boreholes for explosives. 75.1315 Section 75.1315 ...SAFETY STANDARDS-UNDERGROUND COAL MINES Explosives and Blasting § 75.1315 Boreholes for explosives. (a) All explosives fired...

  17. 27 CFR 555.202 - Classes of explosive materials.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ...2013-04-01 2013-04-01 false Classes of explosive materials. 555.202 Section 555.202...BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE EXPLOSIVES COMMERCE IN EXPLOSIVES Storage §...

  18. 30 CFR 56.6903 - Burning explosive material.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...2013-07-01 2013-07-01 false Burning explosive material. 56.6903 Section 56...STANDARDS-SURFACE METAL AND NONMETAL MINES Explosives General Requirements § 56.6903 Burning explosive material. If explosive material...

  19. 27 CFR 555.181 - Reporting of plastic explosives.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ...2014-04-01 false Reporting of plastic explosives. 555.181 Section 555.181 Alcohol...BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE EXPLOSIVES COMMERCE IN EXPLOSIVES Marking of...

  20. 29 CFR 1926.903 - Underground transportation of explosives.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...false Underground transportation of explosives. 1926.903 Section 1926.903...CONSTRUCTION Blasting and the Use of Explosives § 1926.903 Underground transportation of explosives. (a) All explosives or...

  1. 30 CFR 56.6305 - Unused explosive material.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...2011-07-01 2011-07-01 false Unused explosive material. 56.6305 Section 56.6305...STANDARDS-SURFACE METAL AND NONMETAL MINES Explosives Use § 56.6305 Unused explosive material. Unused explosive material...

  2. 27 CFR 555.181 - Reporting of plastic explosives.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ...2010-04-01 true Reporting of plastic explosives. 555.181 Section 555.181 Alcohol...BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE EXPLOSIVES COMMERCE IN EXPLOSIVES Marking of...

  3. 30 CFR 57.6305 - Unused explosive material.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 2011-07-01 false Unused explosive material. 57.6305 Section 57...STANDARDS-UNDERGROUND METAL AND NONMETAL MINES Explosives Transportation-Surface and Underground § 57.6305 Unused explosive material. Unused explosive...

  4. 30 CFR 75.1315 - Boreholes for explosives.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...2012-07-01 false Boreholes for explosives. 75.1315 Section 75.1315 ...SAFETY STANDARDS-UNDERGROUND COAL MINES Explosives and Blasting § 75.1315 Boreholes for explosives. (a) All explosives fired...

  5. 30 CFR 75.1315 - Boreholes for explosives.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...2014-07-01 false Boreholes for explosives. 75.1315 Section 75.1315 ...SAFETY STANDARDS-UNDERGROUND COAL MINES Explosives and Blasting § 75.1315 Boreholes for explosives. (a) All explosives fired...

  6. 30 CFR 56.6905 - Protection of explosive material.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...2012-07-01 false Protection of explosive material. 56.6905 Section 56...STANDARDS-SURFACE METAL AND NONMETAL MINES Explosives General Requirements § 56.6905 Protection of explosive material. (a) Explosive...

  7. 30 CFR 56.6302 - Separation of explosive material.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 2010-07-01 false Separation of explosive material. 56.6302 Section 56.6302...STANDARDS-SURFACE METAL AND NONMETAL MINES Explosives Use § 56.6302 Separation of explosive material. Explosives and blasting...

  8. 30 CFR 56.6903 - Burning explosive material.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...2011-07-01 2011-07-01 false Burning explosive material. 56.6903 Section 56...STANDARDS-SURFACE METAL AND NONMETAL MINES Explosives General Requirements § 56.6903 Burning explosive material. If explosive material...

  9. 30 CFR 57.6302 - Separation of explosive material.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...2011-07-01 false Separation of explosive material. 57.6302 Section...STANDARDS-UNDERGROUND METAL AND NONMETAL MINES Explosives Transportation-Surface and Underground § 57.6302 Separation of explosive material. Explosives and...

  10. 30 CFR 57.6305 - Unused explosive material.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 2012-07-01 false Unused explosive material. 57.6305 Section 57...STANDARDS-UNDERGROUND METAL AND NONMETAL MINES Explosives Transportation-Surface and Underground § 57.6305 Unused explosive material. Unused explosive...

  11. 27 CFR 555.202 - Classes of explosive materials.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ...2012-04-01 2010-04-01 true Classes of explosive materials. 555.202 Section 555.202...BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE EXPLOSIVES COMMERCE IN EXPLOSIVES Storage §...

  12. 29 CFR 1926.903 - Underground transportation of explosives.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...false Underground transportation of explosives. 1926.903 Section 1926.903...CONSTRUCTION Blasting and the Use of Explosives § 1926.903 Underground transportation of explosives. (a) All explosives or...

  13. 30 CFR 57.6302 - Separation of explosive material.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...2013-07-01 false Separation of explosive material. 57.6302 Section...STANDARDS-UNDERGROUND METAL AND NONMETAL MINES Explosives Transportation-Surface and Underground § 57.6302 Separation of explosive material. Explosives and...

  14. 30 CFR 56.6302 - Separation of explosive material.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 2013-07-01 false Separation of explosive material. 56.6302 Section 56.6302...STANDARDS-SURFACE METAL AND NONMETAL MINES Explosives Use § 56.6302 Separation of explosive material. Explosives and blasting...

  15. 29 CFR 1926.903 - Underground transportation of explosives.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ...false Underground transportation of explosives. 1926.903 Section 1926.903...CONSTRUCTION Blasting and the Use of Explosives § 1926.903 Underground transportation of explosives. (a) All explosives or...

  16. 27 CFR 555.181 - Reporting of plastic explosives.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ...2010-04-01 false Reporting of plastic explosives. 555.181 Section 555.181 Alcohol...BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE EXPLOSIVES COMMERCE IN EXPLOSIVES Marking of...

  17. 30 CFR 57.6905 - Protection of explosive material.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...2014-07-01 false Protection of explosive material. 57.6905 Section 57...STANDARDS-UNDERGROUND METAL AND NONMETAL MINES Explosives General Requirements-Surface and Underground § 57.6905 Protection of explosive material. (a) Explosive...

  18. 29 CFR 1926.903 - Underground transportation of explosives.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ...false Underground transportation of explosives. 1926.903 Section 1926.903...CONSTRUCTION Blasting and the Use of Explosives § 1926.903 Underground transportation of explosives. (a) All explosives or...

  19. 30 CFR 57.6302 - Separation of explosive material.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...2014-07-01 false Separation of explosive material. 57.6302 Section...STANDARDS-UNDERGROUND METAL AND NONMETAL MINES Explosives Transportation-Surface and Underground § 57.6302 Separation of explosive material. Explosives and...

  20. 27 CFR 555.205 - Movement of explosive materials.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ...2013-04-01 2013-04-01 false Movement of explosive materials. 555.205 Section 555.205...BUREAU OF ALCOHOL, TOBACCO, FIREARMS, AND EXPLOSIVES, DEPARTMENT OF JUSTICE EXPLOSIVES COMMERCE IN EXPLOSIVES Storage §...