The safety hazards inherent in electropolishing are eliminated by using liquid abrasives. Electropolishing requires high currents and electrolytes consisting of low-pH acids. In addition, the process generates hydrogen and oxygen. Under these conditions, electropolishing has an inherently high hazard potential, and elaborate precautions are necessary to protect the ...

The purpose of this work was to investigate abrasive blasting as a method for decontamination of radioactive Process Refabrication Experiment (PRE) in-cell equipment. Experiments were carried out, initially with nonradioactive materials, and then with low-level radioactive materials to determine the proper operating conditions ...

A demonstration was performed for decontaminating a radioactivity contaminated concrete pad with a portable abrasive blasting system. The system utilizes a rotating blast wheel that scours the concrete surface with metal abrasive. The metal abrasive, pulv...

Lead used for shielding is often surface contaminated with radioisotopes and is therefore a RCRA D008 mixed waste. The technology-based standard for treatment is macroencapsulation. However, decontaminating and recycling the clean lead is a more attractive solution. Los Alamos National Laboratory decontaminates material and equipment contaminated with ...

Lead used for shielding is often surface contaminated with radioisotopes and is therefore a RCRA D008 mixed waste. The technology-based standard for treatment is macroencapsulation. However, decontaminating and recycling the clean lead is a more attractive solution. Los Alamos National Laboratory decontaminates material and equipment contaminated with ...

Past decontamination and solvent recovery activities at the Idaho Chemical Processing Plant (ICPP) have resulted in the accumulation of 1.5 million gallons of radioactively contaminated sodium-bearing liquid waste. Future decontamination activities at the ICPP could result in the production of 5 million gallons or more of sodium-bearing waste using the ...

The Gentilly 1 station, a 250-MW(e) light-water-cooled and heavy-water-moderated nuclear reactor, is being decommissioned to a static state (variant of stage 1) condition by Atomic Energy of Canada Limited (AECL). The scope of the decontamination program at the Gentilly 1 site includes the fuel pool and associated systems, the decontamination center, the ...

This report presents an evaluation of methods for decontamination of reference waste canisters and waste containers. The potential use of chemical solvents, ultrasonics, liquid abrasive blasting, vibratory finishing, electropolishing, liquid honing, high-pressure steam/water spraying, and fixatives as decontamination techniques for ...

... Title : The Primary Dermal Irritation Resulting from the Abrasive Action When Using the M-258 A-1 Decontamination Kit (Study 7). ...

Page 1. PROTOTYPE MINERAL ABRASIVE RECLAIMER: ... 4. TITLE AND SUBTITLE Prototype Mineral Abrasive Reclaimer: Shipyard Operation 5a. ...

The process which will be used to decontaminate waste glass canisters at the Savannah River Plant consists of: decontamination (slurry blasting); rinse (high-pressure water); and spot decontamination (high-pressure water plus slurry). No additional waste will be produced by this process because glass frit used in ...

The process which will be used to decontaminate waste glass canisters at the Savannah River Plant consists of: decontamination (slurry blasting); rinse (high-pressure water); and spot decontamination (high-pressure water plus slurry). No additional waste will be produced by this process because glass frit used in ...

Past decontamination and solvent recovery activities at the Idaho Chemical Processing Plant (ICPP) have resulted in the accumulation of 1.5 million gallons of radioactively contaminated sodium-bearing liquid waste. Future decontamination activities at the...

... Project Number 3-95-7 User's Guide to Selection of Blasting Abrasives ... Operating Conditions Typical Mineral Abrasive Refinery & By-Product Grits ...

... Honing is a centerless machining operation, where the abrasive stones (honing ... centerless machining is permitted by coupling the abrasives to the ...

This report summarizes work conducted to develop, adapt, and evaluate a variety of techniques for sectioning glove boxes, chemical processing equipment, pipes, ducts, and other contaminated components in preparation for decontamination by vibratory finishing and electropolishing. These sectioning studies were conducted with a special 10-ft x 20-ft x 10-ft stainless-steel, ...

... Under practical operation, the undercarriage and the tracked chain can be sujected to abrasives or non- abrasive conditions. ...

A modified Draize test was used to determine the level of primary dermal irritation attributable to the physical abrasion resulting from the wiping action needed for decontamination with the Prototype M-258A-1 Decontamination Kit. Scores recorded were bel...

A modified Draize test was used to determine the level of primary dermal irritation attributable to the physical abrasion resulting from the wiping action needed for decontamination with the Prototype M-258A-1 Decontamination Kit. Exposure sites were not ...

...2010-07-01 2010-07-01 false Abrasive blasting. 72.610 Section 72...MINES Miscellaneous § 72.610 Abrasive blasting. (a) Surface and underground mines. When an abrasive blasting operation is...

...2009-07-01 2009-07-01 false Abrasive blasting. 72.610 Section 72...MINES Miscellaneous § 72.610 Abrasive blasting. (a) Surface and underground mines. When an abrasive blasting operation is...

...2010-07-01 2010-07-01 false Abrasive blasting. 58.610 Section 58...MINES Miscellaneous § 58.610 Abrasive blasting. (a) Surface and underground mines. When an abrasive blasting operation is...

...2009-07-01 2009-07-01 false Abrasive blasting. 58.610 Section 58...MINES Miscellaneous § 58.610 Abrasive blasting. (a) Surface and underground mines. When an abrasive blasting operation is...

Abrasive blasting techniques are being developed for canister decontamination. Abrasive blasting with a slurry of frit followed by rinsing with high pressure water is the present reference process. The present reference process was reevaluated, because of equipment design concerns due to the abrasiveness of the ...

A demonstration was performed for decontaminating a radioactivity contaminated concrete pad with a portable abrasive blasting system. The system utilizes a rotating blast wheel that scours the concrete surface with metal abrasive. The metal abrasive, pulverized concrete dust, and contaminants rebound into a ...

... Battelle provided a report detailing the analysis ... Abrasive Removal Electropolishing Acid Etch Sandblasting ... which provided more detailed analysis. ...

... Title : Decontamination/Cleanup Operations for the Leaseback Area of Alabama Army Ammunition Plant, Alabama. Environmental Assessment. ...

The primary initiatives of the LITCO Decontamination Development group at the Idaho Chemical Process Plant (ICPP) are the development of methods to eliminate the use of sodium bearing decontamination chemicals and minimization of the amount of secondary w...

The primary initiatives of the LITCO Decontamination Development group at the Idaho Chemical Process Plant (ICPP) are the development of methods to eliminate the use of sodium bearing decontamination chemicals and minimization of the amount of secondary waste generated during decontamination activities. In July of 1994, a Commerce ...

Belgium started its nuclear program quite early. The first installations were constructed in the fifties, and presently, more than 55 % of the Belgian electricity production is provided by nuclear power plants. After 30 years of nuclear experience, Belgium started decommissioning of nuclear facilities in the eighties with two main projects: the BR3-PWR plant and the Eurochemic reprocessing plant. ...

The report contains practical, operational information on the decontamination of radioactive fallout. It discusses the type of surfaces which will be encountered, the methods best suited to their decontamination, and the special considerations required by...

A dry abrasive decontamination method was developed for removing radioactive corrosion products from surfaces of coolant pipe systems in decommissioning of a nuclear power plant. Erosion behavior of inside surfaces of stainless and carbon steel pipes by a swirling air flow containing alumina or cast-iron grit abrasive was studied. ...

... ECBC-TR-435 EVAPORATION RATES OF DECONTAMINATION SOLUTIONS FROM OPERATIONALLY RELEVANT SUBSTRATES ...

Feb 27, 2004 ... The Honeybee Robotics team, which designed and operates the rock abrasion tool, determined the depth of the cut at "McKittrick" to be 4.4 ...

Effects of lubrication and humidity on the abrasiveness of a thin boron carbide coating M investigated. However, both lubrication and humidity can strongly influence the abrasive wear process. In this study, the influences of the operating environment, namely humidity and lubrication, on the coating abra

...control device to keep the blade taut. (g) Abrasive wheels and machinery. (1) Abrasive wheels shall be used only on machines...of the wheel in case of breakage. (8) Abrasive wheels with operational defects shall...

Available in abstract form only. Full text of publication follows: The possibility of using conventional vibratory vessel technology as a decontamination technique is the motivation for the development of this project. The objective is to explore the feasibility of applying the vibratory vessel technology for decontamination of radioactively-contaminated ...

... OPERATIONS, DECONTAMINATION, OPERATIONAL READINESS, INFORMATION PROCESSING, BIODYNAMICS, COSMIC RAYS, NEUTRINOS. ...

Commercializationof Dredged- Material Decontamination Technologies Keitb U?Jones isa senior Keith in a tfonof sediment decontamination seamless way,starting with validation at the bench-and pilot-scale levels of sediment decontamination obtaining adequatefunding for capital and operating costs during the tecbnob

A Defense Waste Processing Facility (DWPF) is currently being designed to convert Savannah River Plant liquid, high-level radioactive waste into a solid form, such as borosilicate glass. To prevent the spread of radioactivity, the outside of the canisters of waste glass must have very low levels of smearable radioactive contamination before they are removed from the DWPF. Several techniques were ...

A Defense Waste Processing Facility (DWPF) is currently being designed to convert Savannah River Plant (SRP) liquid, high-level radioactive waste into a solid form, such as borosilicate glass. The outside of the canisters of waste glass must have very low levels of smearable radioactive contamination before they are removed from the DWPF to prevent the spread of radioactivity. Several techniques ...

A method and system are disclosed for removing a surface layer contaminated with radioactive and/or hazardous material and subsequently treating the waste to remove contaminants and provide an essentially contaminant-free final effluent. The contaminated material is removed by blasting the surface with a pressurized stream of air and sodium bicarbonate abrasive media, and the ...

This report describes a machine designed to contaminate rodent diets such as rolled oats and pearled barley with radioactive material. The machine consists of a vertical cylinder with a funnel-shaped bottom in which the grain is tumbled by a jet of compressed gas. An isotope solution is atomized in the gas stream as it is injected through the base of the cylinder. The exhaust gases are ...

The report describes a method for evaluation of individual decontamination and impregnation kit operational and functional performance characteristics. Identifies supporting tests, facilities, and equipment required. Provides procedures for operational su...

...rays, hot metal, or sparks from welding or cutting. (d) Abrasive blasting and spray painting. Longshoring operations shall not be carried on in the immediate vicinity of abrasive blasting or spray painting operations. (e) Machine...

Los Alamos National Laboratory (LANL) is in the process of decontaminating lead shielding material. The procedure involves abrasive surface etching of the shielding to remove the outer layer of lead that contains the majority of the radioactive contaminan...

The electrical submersible pump (ESP) is a high-speed rotating device. Its operational life in oil wells can depend on the type and quantities of abrasives present in the produced fluid. This paper reports on a set of experiments performed in a specialized abrasive test loop. In the test, the size and quantity of ...

A method for fabricating a tool used in cutting, grinding and machining operations, is provided. The method is used to deposit a mixture comprising an abrasive material and a bonding material on a tool surface. The materials are propelled toward the receiving surface of the tool substrate using a thermal spray process. The thermal spray process melts the ...

The primary objective of winter maintenance operations is to improve traffic safety and efficiency during winter storm periods. Abrasives and salt brines have been successfully applied to increase traction and prevent snow and ice from bonding to road sur...

Aim of this research program is to establish the effect of mill size and batch or continuous operation on the role of corrosive and abrasive wear during mineral grinding operations. Grinding ball wear tests are being conducted on the laboratory, pilot pla...

Research has shown that during operation of a number of domestic engines a major portion of the wear is caused by abrasive particles which enter the engine by various routes: i.e. cylinder wear during operation is primarily abrasive in nature, not corrosi...

... and naval science, operational warfare ... DETECTION, ABRASIVES, LIFE CYCLES, ELIMINATION ... Categories : INORGANIC CHEMISTRY ORGANIC ...

As the applications for stents expand, contract manufacturers have responded with improvements in manufacturing operations. PMID:19852180

... BEARINGS CONTAMINATED WITH PARTICLES SMALLER THAN THE EHD OIL FILM THICKNESS RECOVERED AND OPERATED ...

... Offshore of Seabright, NJ ... Each configuration is being evaluated against the operational ... A capability for the drilling, draining and decontamination of ...

... DATA ACQUISITION, LAND AREAS, DECONTAMINATION, EARTH HANDLING EQUIPMENT, BULLDOZERS, DOSIMETRY, NUCLEAR ...

... A sequence of hosing and vigorous scrubbing operations resulted in contamination reductions of 40 to 70 per cent, but with reductions on most ...

... A sequence of hosing and vigorous scrubbing operations resulted in contamination reductions of 40 to 70%, but with reductions on most surfaces ...

Research studies demonstrated the ability of electropolishing to reduce the radiation levels of steel tools and stainless steel vacuum system components, which were heavily contaminated with plutonium oxide, from 1 million dis/min x 100 cm/sup 2/ to background in less than 10 min. Other examples of objects that have been decontaminated within minutes using electropolishing ...

Some items of decontamination and monitoring equipment developed at Chalk River, the reasons for their construction, and the shape or form of the items are described. Operational performance is also discussed. (auth)

... pilot test imply that building construction will be an important factor to the site-specific design of hot gas decontamination system field operations. ...

Technical assistance was provided High Level Waste Engineering in the investigation and prevention of filming during decontamination by mopping. After mopping operations in a Tank Farm application, a film of the cleaning agent sometimes remained on the su...

The objective of this project is to develop and test radiological countermeasures that can be used in post-nuclear-attack recovery operations. The specific objective of this phase of the project was to conduct decontamination experiments on exterior surfa...

Decontamination kinetics of a high-gloss polyurethane paint have been investigated using a novel flow cell experiment where the sample was counted in situ during decontamination. The /sup 134/Cs, /sup 137/Cs, and /sup 90/Y decontaminations follow a rate law that can be predicted theoretically for contaminant ion desorption from weakly ...

Principles are presented of design and operation aimed at reducing radioactive contamination and raising the efficiency of decontamination procedures. The procedures are mainly for routine work and accidental spills. Personnel decontamination is not considered. (J.R.D.)

Contents: Decontamination and Ship Clearance Directives; Miscellaneous Conference Notes; Directives for Future Decontamination Research.

Data are presented on the release of radionuclides, stable metals, and organic reagents from decontamination ion-exchange resin wastes solidified in Portland cement. Both solidified and unsolidified decontamination resin waste samples were collected from ...

The Thorex dissolver was decontamination with Turco reagents afater four years operation. The Turco system of decontamination proved far superior to the previously used caustic-tartrate-nitric acid method. (auth)

Pacific Northwest Laboratory (PNL) conducted a comprehensive literature review of actual reactor decontamination processes that are currently available. In general, any decontamination process should be based on the following criteria: effectiveness, effi...

The component decontamination technology, developed under the DOE sponsored TRU Waste Decontamination Program, has potential benefits to nuclear utility owners in four strategic areas: (1) Meeting ALARA Criteria for Maintenance/Operations; (2) Management ...

The purpose of this Transit IDEA project was to investigate the potential use and effectiveness of a remotely operated Electrostatically Charged Aerosol Decontamination (ECAD) process for decontaminating a rail transit station after a chemical or biologic...

The norms of decontamination for inactive and hot sites are tabulated, and then the nature of radioactive contamination is briefly reviewed. The methods of decontamination can be classified as chemical, physical, and physicochemical. Each of these methods is described in some detail. Ultrasonic decontamination is also ...

Abrasive blasting media is used to remove anticorrosive and antifoulant coatings from the hulls and tanks of US Navy ships. The total production of paint-contaminated spent abrasives from the eight US. Navy shipyards ranges from 75,000 to 100,000 tons per year. Most of this spent abrasive is disposed in landfills. Organic paint binders ...

Micro-scale abrasion (commonly referred to as 'ball cratering') is a small-scale tribological test method which can be operated on a desktop. It offers the possibility of providing a quick, cheap, localized abrasion test that can be used with small samples. In principle its operation is simple, but in practice ...

When decommissioning nuclear installations, large quantities of metal components are produced as well as significant amounts of other radioactive materials, which mostly show low surface contamination. Having been used or having been brought for a while in a controlled area marks them as 'suspected material'. In view of the very high costs for radioactive waste processing and ...

This report gives details of tests conducted to investigate some aspects of the operational safety with respect to frictional sparking of a water/abrasive jet cutting head when used in explosive environments. The tests were carried out on mild steel plate...

Numerous unexpected operational issues relating to the abrasive nature of lunar dust, such as scratched visors and spacesuit pressure seal leaks, were encountered during the Apollo missions. To avoid reoccurrence of these unexpected detrimental equipment ...

The invention is a flow and pressure-sealing valve for use with abrasive solids. The valve embodies special features which provide for long, reliable operating lifetimes in solids-handling service. The valve includes upper and lower transversely slidable ...

This data set contains Rock Abrasion Tool (RAT) Operations Experiment Data Records (EDRs) acquired by Spirit (MER 2) during the Mars Exploration Rover ...

This archive contains Mars Exploration Rover Operations (Ops) Rock Abrasion Tool (RAT) Experiment Data Record (EDR) products and ancillary files. The RAT ...

The publication, intended for use by plant safety and industrial hygiene engineers, describes in detail typical abrasive blast cleaning practices and equipment; potential health and safety hazards involved; methods to identify hazards, and measures which ...

Partial Contents: CAUTIONS AND WARNINGS; GENERAL DESCRIPTION OF THE EQUIPMENT AND THEORY OF OPERATION; OPERATING PROCEDURES; PLANNED MAINTENANCE SYSTEM SETTINGS AND REQUIRED UTILITIES.

The preliminary experiment was performed to obtain the operating conditions of soil washing decontamination process such as decontamination agent, decontamination temperature, decontamination time and ratio of soil and decontamination agent. To estimate ...

The DP West Plutonium Facility operated by the Los Alamos National Laboratory, Los Alamos, New Mexico, was decontaminated between April 1978 and April 1981. The facility was constructed in 1944 to 1945 to produce plutonium metal and fabricate parts for nuclear weapons. It was continually used as a plutonium processing and research facility until mid-1978. ...

In recent years, CFB boilers (CFBB) have been widely used in the commercial power plants due to its environmental benefits, high combustion efficiency, wide coal flexibility, and some other advantages. At the same time, the abrasion problem, the greatest weakness of this kind of boiler, has been gradually exposed in its application process. The abrasion, ...

TRIDENT Refit Facility (TRF) has worked closely with vendors and local regulators to develop a wet abrasive blast paint removal process. This work was initiated when dry abrasive blast operations in their drydock were shut down due to the associated air e...

In response to a request from the Ohio Department of Health, a study was begun of possible silicosis in workers involved in or around abrasive blasting operations. Workers were screened from Parma and Akron, Ohio who were involved in abrasive blasting ope...