... of continuous seismic reflection technique (the Continuous Seismic Profiler) developed at ... and tracing the geologic history of continental margins. ...
DTIC Science & Technology
Due to recent developments in elastomer technology, seismic isolation using elastomer bearings is rapidly becoming an acceptable design tool to enhance structural seismic margins and to protect people and equipment from earthquake damage. With proper design of isolators, high-energy seismic ...
DOE Information Bridge
In NUREG/CR-4334 ('An Approach to the Quantification of Seismic Margins in Nuclear Power Plants'), the Expert Panel on Quantification of Seismic Margins presented a technique for studying the issue of quantifying seismic margins. As part of that technique...
National Technical Information Service (NTIS)
... modify continental crust occur at continental margins. ... margin and the convergent margin of Alaska using modem marine seismic techniques ...
... Abstract : The Seismic Communication and Control Processor (CCP) was assembled and programmed during the period September 1974 to ...
The objective of this report is to discuss the current information on methodological aspects of obtaining risk insight from seismic margins methodologies. It is feasible in the context of a seismic margins review to gain an understanding of the risk signi...
The report is the third report of the Expert Panel on the Quantification of Seismic Margins. The objective of the report is to present detailed guidelines for the performance of seismic margin reviews of nuclear power plants. The guidelines presented in t...
A study was conducted to recommend a methodology for the seismic safety margin review of existing Canadian CANDU nuclear generating stations such as Pickering A. The purpose of the seismic safety margin review is to determine whether the nuclear plant has...
The report is the second report of the Expert Panel on Quantification of Seismic Margins. The Panel's first report was entitled, 'NRC Seismic Design Margins Program Plan.' The objective of the report is to discuss progress to date in studying the issue of...
An evaluation of the seismic capacity of the essential structures for the Zion Nuclear Power plant in Zion, Illinois, was conducted as part of the Seismic Safety Margins Research Program (SSMRP). The structures included the reactor containment building, t...
The report presents a review of the seismic probabilistic risk assessment and seismic margins studies for nuclear power plants in the United States. The techniques employed in these studies are briefly described. A few comments on the evaluation of the fr...
The purpose of this paper is to present the basis and method used for the development of the systems screening portion of the seismic margin review methodology. The results from the review of seven utility-sponsored seismic PRA's and one Seismic Safety Ma...
The Seismic Safety Margins Research Program has produced a systems-oriented probabilistic computational procedure for evaluating the seismic safety of nuclear power plants. The Zion, Illinois, nuclear power plant, chosen as typical, served as the subject ...
This paper briefly outlines the overall systems approach being developed for the Seismic Safety Margins Research Program. The unique features of the approach being taken to reduce the uncertainty in the seismic input for this program are discussed. These ...
The purpose of this paper is to present the basis and method used for the development of the systems screening portion of the seismic margin review methodology. The results from the review of seven utility-sponsored seismic PRA's and one Seismic Safety Margins Research Program Study ...
Energy Citations Database
... tha cross significant tectonic features like graben structures and continental margins. ... with those provided by the Western Norway seismic network. ...
... this proposal is to determine some of the seismic properties of ... Northern California in the STRATAFORM (STRATA FORmation on Margins) test area ...
... In one model, the seismic activity in this province was uniformly distributed ... that for near-term hazard evaluations, the subplate margin provided the ...
... Abstract : This workshop considered seismic propagation in the continental margin (eg, water depths of 200m or less). When ...
... of the conversion of Sn into Lg at continental margins is published. ... in the interpretation of the propagation of high-frequency seismic phases where ...
... of the tectonic history of the margin requires information ... Descriptors : *SEISMIC DATA, *TECTONICS, COMPUTER PROGRAMS, COLD WEATHER ...
... somewhat unusual when the system is compared with seismic surveillance systems ... This tends to reduce the margin between magnitude of events ...
... Title : Enhancing Shallow Seismic Reflection Profiles Using Nonlinear Correlation: Applications to the New Jersey Margin. ...
Seismic structure, gravity anomalies, and flexure of the Amazon continental margin, NE Brazil A. B margin, offshore NE Brazil. Seismic reflection profile data reveal a major unconformity at $7 s two Sea rifted margin and caused seismicity [Lin and Watts, 2002]. ...
E-print Network
Present-day stresses, seismicity and Neogene-to-Recent tectonics of Australia's `passive' margins passive margin. (4) The NW Seismic Zone located mainly on the NW Shelf, the passive margin bordering horizontal stress (e.g. SE, Flinders and SW Seismic Zones). Deformation of ...
... possibility that similar but fossil deposits underlie the rifted continental margins. ... sea-floor spreading, the age of prominent seismic reflectors within ...
... of Rayleigh waves incident obliquely upon the continental margin. ... Descriptors : (*SEISMIC WAVES, PROPAGATION), MATHEMATICAL MODELS ...
... complemented by continuous seismic reflection profiling. Subsequent studies focused on the continental margins. Continental margin studies were ...
During the last several years new bathymetric, seismic reflection and refraction profiles have been collected on the Lomonosov Ridge, a feature whose bathymetric expression is 1700 km long and 50-200 km across. Compiling of data from various organizations provides a more complete data base for describing and interpreting the geological history of this unique ridge that crossed ...
NASA Astrophysics Data System (ADS)
This Summary Report is the first of three volumes for the Seismic Margin Review of the Maine Yankee Atomic Power Station. Volume 2 is the Systems Analysis of the first trial seismic margin review. Volume 3 documents the results of the fragility screening for the review. The three volumes demonstrate how the ...
This Fragility Analysis is the third of three volumes for the Seismic Margin Review of the Maine Yankee Atomic Power Station. Volume 1 is the Summary Report of the first trial seismic margin review. Volume 2, Systems Analysis, documents the results of the systems screening for the review. The three volumes are part ...
Structure of the SE Greenland margin from seismic reflection and refraction data: Implications 2002; published 24 May 2003. [1] Seismic reflection and refraction data from the SE Greenland margin seismics (0935); 8105 Tectonophysics: Continental margins and sedimentary ...
Enhanced intraplate seismicity along continental margins: Some causes and consequences Mike 2008 Available online 14 June 2008 Keywords: Intraplate seismicity Passive margins Australia Structural's marginal seismic zones. This interpretation requires that strength changes ...
This project is directed toward a portion of the Seismic Safety Margins Research Program which includes one link in the seismic methodology chain. The link addressed here is the structural subsystem dynamic response which consists of those components and ...
A multiyear seismic research program has been initiated at the Lawrence Livermore Laboratory. This program, the Seismic Safety Margins Research Program (SSMRP) is funded by the U.S. Nuclear Regulatory Commission, Office of Nuclear Regulatory Research. The...
Since the first meeting on November 9, 1977, the objective of the Seismic Safety Margin Research Program (SSMRP) has been to develop mathematical models that realistically predict the probability of radioactive releases from seismically induced events in ...
The goal of the Seismic Safety Margins Research Program is to develop a complete and fully-coupled analysis procedure, including methods and computer codes, for estimating the risk of earthquake-induced radioactive release from a commercial nuclear power ...
Earthquake experience as well as experiments indicate that, in general, piping systems are quite rugged in resisting seismic loadings. Therefore there is a basis to hold that the seismic margin against pipe failure is very high for systems designed accord...
Seismic design margins indicate the adequacy for earthquake resistance of pumps, valves, piping and their supports used in nuclear power plants. The margins that exist with the allowable stresses given in applicable codes and standards are reviewed in thi...
The Seismic Design Margins Program (SDMP) discussed in this Plan provides the technical basis for assessing the significance of design margins in terms of overall plant safety and will identify potential weaknesses that might have to be addressed. This, i...
The damping values acceptable to the AEC Regulatory staff to be used in the elastic modal dynamic seismic analysis of Seismic Category 1 structures, systems, and components are described. (auth)
Seismic probabilistic risk assessment or a seismic margin study will require a reliable data base of seismic fragility of various equipment classes. Brookhaven National Laboratory (BNL) has selected a group of equipment and generically evaluated the seism...
Project II was charged with developing 'a probabilistic statement of the seismic hazard' at the Zion site. The definition of the seismic hazard included both the time histories upon which the SMACS computation was based and the hazard curve necessary for ...
The overall objectives of this review are to assess the seismic margins of the Maine Yankee pressurized water reactor, and to test the adequacy of this review approach, quantification techniques, and guidelines for performing the review. Results from the trial review will be used to revise the seismic margin ...
The objective of this report is to discuss the current information on methodological aspects of obtaining risk insight from seismic margins methodologies. It is feasible in the context of a seismic margins review to gain an understanding of the risk significance of important seismic-induced ...
In an appeal for broader government support of the University National Oceanographic Laboratory System (UNOLS), Marcus G. Langseth (Eos, 62, 690�691, 1981) has noted that �other U.S. agencies, such as � U.S. Geological Survey, etc., which occasionally use the UNOLS fleet, buy time as needed and accept little or no responsibility for the health or composition of the ...
Seismic correlation of glacial-marine deposition cycles along Antarctic continental margins. Entry ID: ASAC_1051. [ Update this Record ] ...
NASA Website
... Abstract : Recently deployed seismic networks and arrays along the southern Former ... a proxy for that along most of the southern margins of Russia. ...
This paper first examines the difficulties inherent in developing a probabilistic model for the evaluation of margins of risk relating to nuclear incidents produced by earthquakes. Then it considers the seismic and geologic problems pertaining to the dete...
... noise and to constrain models of the near-bottom seismic environment. ... such as sediment thickness, distance from the continental margin and sea ...
... RESEARCH ACCOMPLISHED A new seismic refraction profile has been acquired on the eastern margin of the Silent Canyon caldera. ...
... 12- Page 21. energy normalizations. If we wanted to allow a margin of safety ... the actual presence of a second seismic event in the coda of the first. ...
... Austin, JA, Jr., GS Mountain, CS Fulthorpe, D. Orange, and M. Field, 1996, Continental-margin seismic stratigraphy: assessing the preservation ...
SOLID EARTH > SEISMOLOGY > SEISMIC SURFACE WAVES � Parameter Definition � OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > CONTINENTAL MARGINS > CONTINENTAL ...
This paper discusses the global stress analysis required for the seismic/structural requalification of a reactor secondary piping system in which minor defects (flaws) were discovered during a detailed inspection. The flaws in question consisted of weld imperfections. Specifically, it was necessary to establish that the stresses at the flawed sections did not exceed the ...
... report reviewing the implementation and acceptance testing of several refinements to the Communications and Control Processor (CCP) and a ...
The Seismic Safety Margins Research Program (SSMRP) was a U.S. NRC-funded multi-year program conducted by Lawrence Livermore National Laboratory. Its goal was to develop a complete, fully coupled analysis procedure (including methods and computer) for est...
This report documents interim definitions of terms in the Seismic Safety Margins Research Program (SSMRP). Intent is to establish a common-based terminology integral to the probabilistic methods that predict more realistically the behavior of nuclear powe...
The Seismic Safety Margins Research Program (SSMRP) is an NRC-funded, multiyear program conducted by Lawrence Livermore National Laboratory (LLNL). Its goal is to develop a complete, fully coupled analysis procedure (including methods and computer codes) ...
This document is a progress report on the Seismic Safety Margins Research Program (SSMRP) covering the period July 1, 1981 through September 30, 1981. The report gives a general description of the program, together with financial summaries and individual ...
This document is a progress report on the Seismic Safety Margins Research Program (SSMRP) covering the period April 1, 1981 through June 30, 1981. The report gives a general description of the program, together with financial summaries and individual proj...
The Seismic Safety Margins Research Program (SSMRP) is a NRC-funded, multiyear program conducted by Lawrence Livermore National Laboratory (LLNL). Its goal is to develop a complete, fully coupled analysis procedure (including methods and computer codes) f...
This document is a progress report on the Seismic Safety Margins Research Program (SSMRP) covering the period January 1, 1981 through March 31, 1981. The report gives a general description of the program, together with financial summaries and individual p...
This document is a progress report on the Seismic Safety Margins Research Program (SSMRP) covering the period October 1, 1980 through December 31, 1980. The report gives a general description of the program, together with financial summaries and individua...
This document is a process report on the Seismic Safety Margins Research Program, a program designed to develop realistic estimates of the behavior of a nuclear power plant during an earthquake. The report gives a general description of the program, toget...
The document has been prepared pursuant to the second meeting of the Senior Research Review Group of the Seismic Safety Margin Research Program (SSMRP), which was held on June 15, 16, 1978. The major portion of the material contained in the document is de...
The Seismic Safety Margins Research Program (SSMRP) is a US Nuclear Regulatory Commission-funded, multiyear program conducted by Lawrence Livermore National Laboratory (LLNL). Its objective is to develop a complete, fully coupled analysis procedure for es...
The objective of this paper is to describe how seismic PRA and margin assessments have been used in the design certification of standard reactors and actual design of new nuclear power plants. The lessons learnt in these applications are highlighted. (authors)
Seismic margin review of nuclear power plants requires that the High Confidence of Low Probability of Failure (HCLPF) capacity be calculated for certain components. The candidate methods for calculating the HCLPF capacity as recommended by the Expert Pane...
... CRUISE SUMMARY EASTERN GULF OF MAINE AND CONTINENTAL MARGIN. ... Continuous seismic profiling data reveal a flank of Kelvin ...
... for this is simply that large margins of error would have to be allowed in planning a covert underground test since precise earthquake prediction is ...
This report discusses the mechanics of subduction between the trench and the outer rise region of the seafloor. Finite element modeling of stress and deformation are used. Also discussed in this paper is clustering of seismicity in assoication with asperities; the analysis of oblique subduction; and upper plate and back-arc seismicity.
Continuous seismic reflection profiles along the line of JOIDES drill holes were adjusted for the velocity of sound at depth, as measured in one of the drill holes and determined at nearby seismic refraction stations. The adjusted reflecting horizons agre...
In order to evaluate the conservatisms in present nuclear power plant seismic safety requirements, a probabilistic based systems model is being developed. This model will also be used to develop improved requirements. In Phase I of the Seismic Safety Marg...
A wide depth distribution of seismic tremors along the northern Cascadia margin Honn Kao1 , Shao convergence across a locked interface--are observed about every 14 months with an unusual tremor-like seismic a limited horizontal band. Many occurred within or close to the strong seismic reflectors above the plate
Students will use GeoMapApp to investigate variations in the geomorphology of continental margins both Passive and Active at various sites of the North American and South American continents. They will then construct a table of observations that will relate margin geomorphology and seismic activity, followed by general interpretations ...
NSDL National Science Digital Library
Offers explanations on the origin of the North American Atlantic continental margin. Provides an analysis and illustrations of structural and strategraphic elements of cross sections of the Atlantic continental margin. Also explains the operations and applications of seismic-relection profiles in studying ocean areas. (ML)
ERIC Educational Resources Information Center
The Gulf of Aden is a young and narrow oceanic basin formed in Oligo-Miocene time between the rifted margins of the Arabian and Somalian plates. The distal margin and particularly the Ocean-Continent Transition (OCT) domain were previously studied considering a large set of data (Leroy et al., 2004; d'Acremont et al., 2005; d'Acremont et al., 2006; Autin, ...
A method acceptable to the NRC is described for complying with regulations pertaining to verification of adequacy of seismic design of electrical equipment for all types of nuclear power plants.
This book contains 15 chapters. Some of the titles are: Vertical Seismic Profiling - A Measurement that Transfers Geology to Geophysics; Depositional Sequence Mapping to Illustrate the Evolution of a Passive Continental Margin; Seismic Stratigraphic Expression of Submarine Fans; Aspects of Seismic Resolution; and ...
Processes that create and modify continental crust occur at continental margins. We investigate the crustal structure across the U.S. East Coast rifted margin and the convergent margin of Alaska using modem marine seismic techniques. Rifling of the U.S. E...
An initial specification is presented of a computation approach for a probabilistic risk assessment model for use in the Seismic Safety Margin Research Program. This model encompasses the whole seismic calculational chain from seismic input through soil-structure interaction, transfer functions to the probability ...
Since the first meeting on November 9, 1977, the objective of the Seismic Safety Margin Research Program (SSMRP) has been to develop mathematical models that realistically predict the probability of radioactive releases from seismically induced events in nuclear power plants. These models will be used to estimate the actual probability ...
This paper briefly outlines the overall systems approach being developed for the Seismic Safety Margins Research Program. The unique features of the approach being taken to reduce the uncertainty in the seismic input for this program are discussed. These unique features will include extensive use of expert opinion, earthquake rupture ...
Knowledge of convergent margin systems evolved from hypothesis testing with marine geophysical technology that improved over decades. Wegener's drift hypothesis, Holmes mantle convection, and marine magnetic anomaly patterns were integrated into an ocean spreading concept that won wide acceptance after ocean drilling confirmed the crustal younging trend ...
Due to recent developments in elastomer technology,seismic isolation using elastomer bearings is rapidly gaining acceptance as a design tool to enhance structural seismic margins and to protect people and equipment from earthquake damage. With proper design of isolators, the fundamental frequency of the structure ...
Recent studies estimate that seismically induced core melt comes mainly from earthquakes in the peak ground acceleration range from 2 to 4 times the safe shutdown earthquake (SSE) acceleration used in plant design. However, from the licensing perspective of the US Nuclear Regulatory Commission, there is a continuing need for consideration of the inherent quantitative ...
Task of the Major Structure Response Project within the Seismic Safety Margins Research Program (SSMRP) was to develop detailed finite element models of the Zion Nuclear Power Plant's containment building and auxiliary-fuel-turbine (AFT) complex. The resulting models served as input to the seismic methodology analysis chain.
An atlas of 14 seismic sections shows major tectonic features across various convergent margins. All sections are at the same scale and have been processed to a research level. Such processing produces clear images of sediment accretion from below. Most margins show sediment subduction. The results of tectonic erosion are seen in ...
Quantifying subaqueous slope stability during seismic shaking: Lake Lucerne as model for ocean margins Michael Strasser a,, Sylvia Stegmann b , Felix Bussmann a , Flavio S. Anselmetti a , Beat Rick c Research Centre Ocean Margins (RCOM), University of Bremen, P.O. Box 330440, 28334 Bremen, Germany c Dr
A deep seismic reflection profile, SEISDATA 6 (SD 6), was collected in the state of Georgia (United States), in 1981, with the main purpose to study the crustal structure and tectonic evolution of the southeastern North American continental margin. The SD 6 profile, with a total length of approximately 430 km, was collected by Seisdata Services Inc. of ...
The Seismic Communication and Control Processor (CCP) was assembled and programmed during the period September 1974 to August 1975 using the BBN PLURIBUS multiprocessor architecture. Acceptance testing of the CCP was dependent on and interwoven with implementation and testing of the other nodes in the Seismic Data Network. ...
In the southeast corner of the Caribbean plate, westward subduction of oceanic (Atlantic) South America transitions to east-west transform with continental South America, forcing the South American lithosphere to tear along its former passive margin. The most widely accepted model for lithospheric detachment, the tensile tear model, envisages oblique ...
...of buying or carrying margin stock if the credit is secured directly or indirectly by margin stock. Lenders include �banks...Commission or the Commodity Futures Trading Commission that accept deposits of margin stock in connection with:...
Code of Federal Regulations, 2011
This project is directed toward a portion of the Seismic Safety Margins Research Program which includes one link in the seismic methodology chain. The link addressed here is the structural subsystem dynamic response which consists of those components and systems whose behavior is often determined decoupled from the major structural ...
Results of the recently completed seismic evaluation at the Los Alamos National Laboratory site indicate a need to consider seismic loads greater than design basis for many structures systems and components (SSCs). DOE Order 5480.28 requires that existing SSCs be evaluated to determine their ability to withstand the effects of earthquakes when changes in ...
... lasers. However, the cross sections for cobalt ions are large enough to be marginally acceptable. Design considerations ...
Seismic probabilistic risk assessment or a seismic margin study will require a reliable data base of seismic fragility of various equipment classes. Brookhaven National Laboratory (BNL) has selected a group of equipment and generically evaluated the seismic fragility of each equipment class by ...
This report documents the formulation of a methodology for modeling and evaluating the effects of structural uncertainty on predicted modal characteristics of the major structures and substructures of commercial nuclear power plants. The uncertainties are...
This report presents a computational methodology for the prediction of core melt probabilities in a nuclear power plant due to earthquake events. The proposed model has four modules: seismic hazard, structural dynamic (including soil-structure interaction...
ARK-VIII/3b: 2440 km of multi-channel reflection seismic and 2440 km ... ARK-X/2 > Structure of the East Greenland Continental Margin � Supplemental Info ...
The seismic qualification requirements of auxiliary feedwater systems (AFWS) of Pressurized Water Reactors (PWR) were developed over a number of years. These are formalized in the publication General Design Criteria (Appendix A to 10CFR50). The full recog...
Five profiles of seismic reflection data from the United States east coast are described. From these profiles, two localized areas of extensive slope deposition are identified, one seaward of Albemarle Sound and the other seaward of the Delaware-Maryland-...
The goal of this proposal is to determine some of the seismic properties of the top few tens of meters of the sedimentary fan off Northern California in the STRATAFORM (STRATA FORmation on Margins) test area, and to attempt to relate them to the the multi...
Seismic, infrasonic and magnetic induction data from Mt Erebus: 1980-1986, ... Drilling on the Antarctic Continental Margin (SHALDRIL) [NBP0602A] PARENT DIF ...
A preliminary determination of failure modes for safety related equipment and major structures in the SSMRP reference plant was made. The preliminary predictions were made using engineering judgment as a review of seismic qualification requirements, desig...
In this report the emphasis is on those structures which support systems necessary to assure the safe shut down of the reactors and prevent the release of radioactive materials. Of primary importance are the reactor containment buildings, the combined tur...
Seismic monitoring stations could be used to detect and measure a target body's seismic activity .... Total Monitoring Station mass ~ 11.5 kg (with margin) ...
Multichannel seismic reflection, seismic refraction, and magnetic anomaly data are used to interpret the Mesozoic sea-floor spreading history and subsequent sedimentary evolution of the Sohm basin southeast of Nova Scotia. Observed M-series (Mesozoic) mag...
... sedimentology, geochemistry, magnetic susceptibility, and palynology. Twenty-two seismic profiles (18 km total) and eight sediment cores taken from the lake margin to its depocenter at 13.5 m provide ... ...
NBII National Biological Information Infrastructure
The New Madrid seismic zone (NMSZ), located in the central United States, is the most seismically active zone east of the Rocky Mountains. It lies within the Reelfoot rift, a northeast-trending basement fault zone. Historical records and paleoseismic research indicate this region has experienced at least three major prehistoric events that occurred in ...
We describe the containment failure mode and release category assumptions used in the seismic risk study of the Zion nuclear power plant, which was performed by the Seismic Safety Margins Research Program (SSMRP). We then, for the dominant accident sequen...
Twenty continuous seismic reflexion profiles have been made across the main trough of the Red Sea north of 17th degree N latitude. The main trough is characterized by mildly deformed sediment layers along the margins with highly disturbed materials in the...
Median response and its variability and correlation are the elements required in the calculation of component failure probability. Conservatism or non-conservatism of the seismic response of piping system generated by the plant design procedures must be removed. The Lawrence Livermore National Laboratory under contract to the US Nuclear Regulatory Commission developed an ...
... on reflection seismic profiles along the world's continental margins (Vail et al., 1991). If sequence architecture, with ... most prominent Cenozoic marine incursion on the Australian continental margin (...
A study of the geology of the continental margin of northeast Venezuela was conducted by marine magnetic, gravity, seismic reflection, and bathymetric investigations, and by a program of dredging of submarine rock outcrops. This study demonstrates the ext...
The material presented in this paper deals with a coordinated experimental/analytical program designed to provide information needed for making margins to failure assessments of seismic Category I reinforced concrete structures. The experimental program i...
Geophysical investigations consisting of gravity, magnetic, depth sounding seismic reflection and refraction measurements were made aboard R/V Vema on the continental margin off Norway. Using these and earlier data in the area, maps showing bathymetry, fr...
Mar 8, 2001 ... Site Identification of the GNSS Monument Site Name : Seismic Station ... Geologic Characteristic : Eastern margin of Siberian platform. ...
Site Identification of the GPS Monument Site Name : Seismic Station Tixi Four ... Tixi is about 100 km to the east of the : margin of Siberian platform. ...
Feb 28, 2006... beyond the margin of this particular image. ... creating a large volume of volcanic and seismic activity in the area. ...
Mar 1, 2011 ... Statistical Analysis of Thermal Analysis Margin ... community in characterizing the effect of sonic booms on seismic sensors in the field, ...
ANT-VI/3 >Structure of the Continental Margin in the Weddell Sea and ... Miller and Oerter (Unknown), Cruise Report ANT-X/2, Berichte zur Polarforschung ...
ANT-X/2 > Structure of the Continental Margin in the Weddell Sea and Adjacent ... Miller and Oerter, Cruise Report ANT-X/2, Berichte zur Polarforschung ...
This report is the third report of the Expert Panel on the Quantification of Seismic Margins. The objective of this report is to present detailed guidelines for the performance of seismic margin reviews of nuclear power plants. The guidelines presented in this report are based on the Panel's second report ...
... FOR 3-DIMENSIONAL S-VELOCITY MANTLE STRUCTURE ALONG THE TETHYAN MARGIN ... by jointly inverting a variety of different seismic data. ...
Seismic study of the northwestern boundary of the Scotia plate on the Argentinean continental margin. IX ISAES. 8-12 setiembre. Potsdam. Alemania. ...
Depth to the Juan De Fuca Slab Beneath the Cascadia Subduction Margin: A ... volcanoes, and (4) revision of the slab shape based on new seismic-reflection ...
objectives of the cruise were (a) to image the gas-hydrate stability zone across the continental margin to document bottom-simulating reflections (BSRs) and changes in...
Science.gov Websites
... earthquake is given. In Section IV, results are presented of modeling observations of S, SS, SSS where the event occurs near tectonic margins and ...
Reflection seismic, magnetic, gravimetric survey of the Pacific Margin of the Antarctic Peninsula (Summer 1989-90, 1991-1992) [X89_92AP] ...
Seismic fragility levels of safety related equipment are developed for use in a seismic oriented Probabilistic Risk Assessment (PRA) being conducted as part of the Seismic Safety Margins Research Program (SSMRP). The Zion Nuclear Power Plant is being utilized as a reference plant and fragility descriptions are ...
The Advisory Committee on Reactor Safeguards recommended that the NRC staff review in detail the capability and available seismic design margin of fluid systems and equipment used in North Anna, Units 1 and 2 to achieve safe shutdown following a site-design safe-shutdown earthquake (SSE). The staff conducted a series of plant visits and meetings with the ...
In the North Atlantic there is a clear association between continental breakup and onshore flood basalts. For the past two decades, largely based on the North Atlantic, it has become widely accepted that mantle temperature is the primary factor that controls melt generation during breakup. Subsequently the majority of numerical models that seek to explain variations in ...
This book contains 14 chapters. Some of the chapter titles are: An Interpretation of the Multichannel Seismic Reflection Profiles across the Continental Margin of the Dumont D'Urville Sea, off Wilkes Land, East Antarctica; Hydrocarbon Geochemistry of Sediments Offshore from Antarctica: Wilkes Land Continental margin; and the ...
Ellef Ringnes Island is located in the Sverdrup Basin, a pericratonic trough that began rifting in the Carboniferous. The island contains several ovate domes composed of evaporites derived from the Carboniferous Otto Fiord formation. The domes consist of 300-500 m thick, relatively undeformed anhydrite caps underlain by halite cores of unknown thickness with sheared anhydrite ...
The close proximity to the New Madrid Seismic Zone and the significant population and infrastructure presents a potentially substantial risk for central U.S. cities such as Memphis, Tennessee. However, seismic provisions in currently adopted Memphis building codes for non-essential structures have a lower seismic design intensity level ...
The seismic environment for the surface facilities is one of the most important design considerations of the prospective nuclear waste repository at the Yucca Mountain site. As the repository design progresses through the site characterization and advanced conceptual design, the seismic design strategy will be modified to resolve ...
The Algerian - French SPIRAL research program uses deeply penetrating low frequency multichannel and wide-angle seismic methods to study the structure of the Algerian margin and adjacent basin. This presentation will show the context and objectives of the SPIRAL program together with some new insights brought out from Multichannel ...
The purpose of this article is to make aware seismic evidences that suggest a possible segmentation of the continental margin at the Guerrero-Oaxaca, Mexico region. The analysis of the aftershocks of relevant earthquakes and a survey of microseismicity using a portable seismographs network permit to infer the characteristics of the ...
The purpose of this article is to make aware seismic evidences that suggest a possible segmentation of the continental margin at the Guerrero-Oaxaca, Mexico region. A survey of microseismicity using a portable seismographs network and the analysis of the aftershocks distribution of 1982 and 1995 major earthquakes permit to infer the characteristics of the ...
This paper describes procedures used to design and qualify unanchored equipment to survive Seismic events to the PC = 4 level in a moderate seismic area. The need for flexibility to move experimental equipment together with the requirements for remote handling in a highly-radioactive non-reactor nuclear facility precluded normal equipment anchorage. ...
During cruises in May and June of 1999, 7991 km of single channel high resolution seismic data and 5278 km of chirp sub-bottom and side-scan sonar data were collected from the continental margin of the East China Sea (ECS) and Yellow Sea. When these data ...
This study addresses uncertainties arising from variations in different modeling approaches to soil-structure interaction of massive structures at a nuclear power plant. As part of the Nuclear Regulatory Commission's Seismic Safety Margins Research Progra...
This document is a progress report on the Seismic Safety Margins Research Program (SSMRP) covering the period July 1, 1981 through September 30, 1981. The report gives a general description of the program, together with financial summaries and individual project details. Each project is summarized to show accomplishements, schedules, milestones and ...
This document is a progress report on the Seismic Safety Margins Research Program (SSMRP) covering the period April 1, 1981 through June 30, 1981. The report gives a general description of the program, together with financial summaries and individual project details. Each project is summarized to show accomplishments, schedules, milestones and completion ...
This summary presents the results and lessons learned from the seismic margin assessment (SMA) of Unit 1 of the Hatch Nuclear Plant. The primary purpose of this SMA was to assess the practicality of the EPRI SMA methodology on a BWR on a soil site such as Hatch. The major findings from the Hatch SMA are briefly described along with the lessons learned ...
A seismic margin assessment of the Duke Power Company Catawba unit 2 nuclear station showed the practicality of an EPRI-developed methodology for demonstrating the ability of nuclear plants to withstand earthquakes beyond design basis. The assessment established that the Catawba station would survive earthquake loads up to twice its design basis.
This report documents interim definitions of terms in the Seismic Safety Margins Research Program (SSMRP). Intent is to establish a common-based terminology integral to the probabilistic methods that predict more realistically the behavior of nuclear power plants during an earthquake. These definitions are a response to a request by the Nuclear Regulatory ...
This document is a progress report on the Seismic Safety Margins Research Program (SSMRP) covering the period January 1, 1981 through March 31, 1981. The report gives a general description of the program, together with financial summaries and individual project details. Each project is summarized to show accomplishments, schedules, milestones and ...
This document is a quarterly progress report on the Seismic Safety Margins Research Program (SSMRP). The report gives a general description of the program, together with financial summaries and individual project details. Each project is summarized to show accomplishments, schedules, milestones and completion dates, budget and expenditures, and any ...
The Advisory Committee on Reactor Safeguards recommended that the NRC staff review in detail the capability and available seismic design margin of fluid systems and equipment used in North Anna, Units 1 and 2 to achieve safe shutdown following a site-desi...
The main objective of the cruise was to collect multichannel seismic reflection profiles over the southern margin of the Rockall Plateau. These profiles were for use in defining drillsites for upgrading a preliminary Ocean Drilling Program proposal entitl...
The rifted and transform margins created by the separation of Madagascar and Africa offer an opportunity to jointly investigate the structural and geodynamic evolution of conjugate continental passive margins. It is generally accepted that the continental breakup of Gondwana in the East African region began with the onset of the ...
STOCHASTIC SEISMIC EMISSION FROM ACOUSTIC GLORIES AND THE QUIET SUN A.-C. DONEA1, C. LINDSEY2 and D; accepted 8 January 2000) Abstract. Helioseismic images of multipolar active regions show enhanced seismic'. The acoustic glories contain elements that sustain an average seismic emission 50% greater than similar
In this paper we present observations on a number of issues related to seismic PRAs including: strengths and weaknesses of seismic PRAs; uncertainty, sensitivity and variability; common misconceptions; possible improvements in seismic safety acceptance criteria; recommended modifications to the NRC approach to ...
In 1992, the Erable project was undertaken by the Geological Survey of Canada and Ifremer to acquire multiple 2-D multichannel seismic reflection profiles in the Newfoundland Basin and along the margins of Flemish Cap. We present four multichannel seismic reflection profiles from the project collected over the southern ...
Integration of regional seismic reflection and refraction profiles and potential field data across the Argentine margin and its conjugate off South Africa, complemented by crustal-scale gravity modelling, is used to reveal and illustrate the whole-crust architecture, onshore-offshore crustal structure correlations, the character of the continent-ocean ...
Regional seismic interpretation of the passive margin offshore Namibia has enabled a sequence stratigraphic framework to be established for this previously under-studied region. Within this framework potential hydrocarbon plays, for example the location of source, seal and reservoir rocks can be pinpointed. The history of sequence stratigraphic models ...
The purpose of the staff technical position (STP) is to provide guidance to the U.S. Department of Energy (DOE) on acceptable geologic repository investigations that can be used to identify fault displacement hazards and seismic hazards. The staff conside...
For seismic analysis of structures in nuclear industry, the spectrum method of modal combination acceptable to US Nuclear Regulatory Commission is applicable only to systems with orthogonal natural modes. When a structure with frequency dependent boundary...
The Seismic Safety Margins Research Program (SSMRP) was started in 1978 with the goal of developing tools and data bases to compute the probability of earthquake - caused radioactive release from commercial nuclear power plants. These tools and data bases were to help NRC to assess seismic safety at nuclear plants. The methodology to ...
22. Yorath, C. J. et al. Marine Multichannel Seismic Reflection, Gravity and Magnetic Profiles--Vancouver Island Continental Margin and Juan De Fuca Ridge (Open File Report 1661, Geological Survey of Canada (2003). 27. Bolton, M. K. & Rogers, G. C. Juan de Fuca plate seismicity at the northern end
The Seismic Safety Margins Research Program (SSMRP) is a NRC-funded, multi-year program conducted by Lawrence Livermore National Laboratory (LLNL). One of the goals of the program is to develop a complete, fully coupled analysis procedure (including methods and computer codes) for estimating the risk of an earthquake-caused radioactive release from ...
Tens of thousands of small earthquakes occur in California each year, reflecting brittle deformation of the margins of the Pacific and North American plates as they grind inexorably past one another along the San Andreas fault system. The deformational patterns revealed by this ongoing earthquake activity provide a wealth of information on the tectonic processes along this ...
We present an interpretation of crustal seismic refraction data from the Peninsular terrane, one of the many exotic terranes that have been accreted to the continental margin of southern Alaska in the past 200 m.y. A seismic refraction line was collected along the Glenn Highway in the Copper River Basin of south central Alaska in 1984 ...
In 2000 FY, a 3 year program of eroded piping tests was initiated with the following objectives: 1) to ascertain the seismic safety margins for eroded piping designed under the current seismic design code, 2) to clarify the elasto-plastic response and ultimate strength of eroded nuclear piping. It was intended to carry out a series of ...
in the northeast. Very dense (i.e., 100 m geophone spacing), reversed and multifold seismic refraction profiling as an aulacogen of the rifted Levantine margin along the eastern Mediterranean. Key words: Seismic refraction, P: Velocity structure of north Arabian platform INTRODUCTION A seismic refraction survey was ...
The project described here demonstrates a new method for detecting the margin of poorly mapped old mine works using the seismic waves generated by the active mining of the coal seam. This method resembles that of seismic while drilling and especially forw...
Existing academic and industry data from the eastern Gulf of Aden away from the Afar flood basalt province show that it is an ideal natural laboratory for seismic studies of passive continental margins because 1) the Gulf of Aden margins are largely free of salt deformation structures, and Oligocene-Recent sedimentary strata are ...
Natural-gas hydrates are solid, ice-like mixtures of natural gas (mainly methane) and water that are found in continental margin sediments at depths of water greater than about 500 m. The presence of gas hydrates in continental margins is commonly inferre...
The deep crustal structure of the Northeast American margin has been intensely investigated in the 1980s by means of seismic reflection and wide-angle studies. New data about the Northwest African margin system allow us to better understand the conjugate evolution of the Central Atlantic Ocean margins. The ...
A deep marine seismic reflection profile was obtained across the Mesozoic rifted continental margin off Nova Scotia, eastern Canada. This profile crosses the Scotian Basin, one of the deepest basins on the margin of eastern North America, and it complements other deep crustal seismic data on this ...
A method acceptable to the NRC is described for identifying and classifying the safety-related components of LWR power plants that should be designed to withstand the effects of the safe shutdown earthquake.
... roughly equal amplitudes in all of the-wrong beams. ... occurred which was visible in a beam but invisible ... at-the center of the acceptance region, the ...
... 47 side-scan sonar and seismic systems used for mineral exploration are acceptable for detecting ... The effective shallow water survey limit for ...
... mand. From this expression, a damage factor which is a measure of ... damage factor. It is generally accepted that nonstructural damage is related to ...
Depositional facies are predictable from seismic data through an orderly approach to the interpretation of seismic reflections. We term this approach seismic facies analysis. Seismic facies types generated by sand-shale strata vary mostly as a function of water depth at the time of deposition. Therefore, a regional ...
The Seismic Safety Margins Research Program (SSMRP) is a US Nuclear Regulatory Commission-funded, multiyear program conducted by Lawrence Livermore National Laboratory (LLNL). Its objective is to develop a complete, fully coupled analysis procedure for estimating the risk of earthquake-induced radioactive release from a commercial nuclear power plant and ...
The controls on seismicity and fault reactivation in stable intraplate crust located far from active plate boundaries are poorly understood. The southern Australian continental margin has been undergoing mild levels of deformation over the past ~10 Myr, manifested today by high levels of seismicity for a stable intraplate region. ...
In recent years, increasing knowledge in the geoscience field has led to a better understanding that, although highly unlikely , it is possible for a nuclear power plant to be subjected to earthquake ground motion greater than that for which the plant was designed. There is a concern that there may be an upper shelf of seismic capacity, primarily for active equipment, which ...
Los Alamos National Laboratory (LANL) is situated on the eastern flank of the Jemez Mountains in which lies the Valles Caldera, a volcanic center that erupted 1.1 to 1.5 million years ago. Los Alamos is also situated within the western margin of the Rio Grande Rift system, where there is a possibility for seismic activity. Within the Los Alamos area are ...
the failure of bridges during an earthquake can cause loss of life and impede emergency response, it can also excessive transverse movement of the bridge deck during earthquakes in the event of bearing failure. TypicalAccepted M anuscript N otC opyedited Bridge Seismic Retrofitting Practices in the Central
Background:Traditionally a 1-cm margin has been accepted as the gold standard for resection of colorectal liver metastases. Evidence is emerging that a lesser margin may provide equally acceptable outcomes, but a critical margin, below which recurrence is higher and survival poorer, has not ...
PubMed Central
... then is to examine needs of the Air Force relative to qualifying engines to the operational suitability requirement for engine distortion acceptance ...
with a caliber 50 light-gas gun by William Page, Robert Miller, and Jack ... of the gun in its present mode of operation has been marginally acceptable. ...
... being flown at I percent static margin to ... a measure of acceptable (not desirable) flying qualities ... to double amplitude as a measure of satisfactory fly- ...
... As discussed in Subsection 2.4, the results of the assessment confirm whether the design is within the acceptable safety margins by comparing the ...
... The fracture mechanics analyses show that the SRS reactor tanks can tolerate large cracks while still maintaining Code required safety margins. ...
Nov 17, 2009 ... This represents a ten percent drop in available solar power and is considered normal, acceptable, and within design margins. ...
... or, for that matter, for any indication that any of these variables might be close to or far from the upper limits of acceptable processing safety margins ...
We present a gravity inversion method for determining the deep structure of rifted margins. It uses a 2-D earth model parametrized as multiple, irregularly shaped, polygonal bodies, each of uniform density. The method has three novel features. First, it links parameters in the shallow parts of the model to those in the deep parts by using a uniform extension model as a ...
The seismic risk methodology developed in the US NRC Seismic Safety Margins Research Program (SSMRP) was demonstrated by its application to the Zion nuclear power plant, a pressurized water reactor (PWR). A detailed model of Zion, including systems analysis models (initiating events, event trees, and fault trees), SSI and structure ...
A seismic evaluation of concrete pits was performed for loads induced by long-length contaminated equipment platform. This evaluation has two load scenarios included in the analyses. The first scenario is the combined static and seismic soil and wall seismic loads applied to the pit walls. The second scenario is the LLCE platform ...
Marine deep seismic reflection data have been collected across the Appalachian Orogen and the rifted continental margin northeast of Newfoundland. Results across the Appalachian Orogen show the extent of the ancient Grenvillian passive margin beneath the terranes to the east, the nature of terrane boundaries at depth, and the ...
This report discusses the structure, geologic history, and petroleum potential of the Yakutat segment, the part of the continental margin between Cross Sound and Icy Bay, northern Gulf of Alaska. As part of a program of geological and geophysical investigations of the continental margin in the northern Gulf of Alaska, the US Geological Survey collected ...
The Electric Power Research Institute (EPRI) has sponsored a two part program for evaluation of nuclear power plant seismic margin. The two parts consist of criteria development and criteria application. Criteria development is documented by EPRI. This report documents the application of the Seismic Margin ...
