Experimental data and analytical models that should be considered in assessing the transport properties of plutonium aerosols following a hypothetical reactor accident have been examined. Behaviors of released airborne materials within the reactor contain...

Accidental re-entry into the earth's atmosphere could lead to the release and dispersion into the atmosphere of up to about 1% of the plutonium-238 ...

The Plutonium Finishing Plant (PFP) at the Hanford, Washington, site began operating in the 1950s to produce plutonium metal and oxide for national defense purposes. Due to the production requirements and methods utilized to meet national needs and the abrupt shutdown of the plant in the late 1980s, the plant was left in a condition that poses a risk of ...

Activities in the following fields are summarized: plutonium scrap processing, process technology, plutonium trenches and soils, prevention of accidental release, environmental evaluations, and radiation monitoring. (DLC)

The Savannah River Site (SRS) was bulk to produce plutonium and tritium for national defense. As a result of site operations, routine and accidental releases of radionuclides have occurred. The effects these releases have on the k>cal population and envir...

The activity concentration of plutonium in an environmental sample does not usually constitute sufficient information to determine if it is due only to fallout. Alpha and gamma spectrometry are used here conjointly in the study of environmental soil samples to distinguish between samples showing plutonium contamination due to fallout exclusively, and ...

Activities are summarized in the following fields: process development and technology, plutonium trenches, soils, prevention of accidental releases, radiation monitoring, environment, and radiation standards. (DLC)

... Directive SUBJECT Release of Information Concerning Accidental Casualties ___- Involving Military Personnel or Equipment ...

Risk estimates for deterministic effects of inhaled weapons-grade plutonium (WG Pu) are needed to evaluate potential serious harm to: (1) U. S. Department of Energy nuclear workers from accidental or other work-place releases of WG Pu; and (2) the public from terrorist actions re...

An accidental atmospheric release of PuO sub 2 particles from a nuclear facility may result in deposition of a major fraction of the particles within a few kilometers downwind. Estimates of plume depletion as a function of distance were computed using our...

Activities in the following fields are summarized: waste concentration and storage (corrosion of mild steel, tank leaks), Pu recovery from incinerator ashes, plutonium trenches, tank farms, prevention of accidental releases (airborne release, biological i...

The Colorado Department of Public Health and Environment (CDH) sponsored a study to reconstruct contaminant doses to the public from operations at the Rocky Flats nuclear weapons plant. This analysis of the accidental release of plutonium from the area known as the 903 Pad is part of the CDH study. In the 1950`s and 1960`s, 55-gallon ...

The Colorado Department of Public Health and Environment (CDH) sponsored a study to reconstruct contaminant doses to the public from operations at the Rocky Flats nuclear weapons plant. This analysis of the accidental release of plutonium from the area known as the 903 Pad is part of the CDH study. In the 1950's and 1960's, 55-gallon ...

The manual discusses reducing the risk associated with an accidental release of chlorine. It identifies examples of potential causes of accidental releases that apply to processes that use chlorine, as well as measures that may be taken to reduce the accidental release ...

... was through accidental release from a private research facility. ...

... as the reinforcement in filamentary composite materials brought up the possibility of accidental release of carbon fibers from the burning of crashed ...

Experimental data and analytical models that should be considered in assessing the transport properties of plutonium aerosols following a hypothetical reactor accident have been examined. Behaviors of released airborne materials within the reactor containment systems, as well as in the atmosphere near the reactor site boundaries, have been ...

Transporting radioactive material onsite (intrasite transfers) via truck or train must be performed in a safe manner. Adequate safety is assured for each transfer, as documented in the corresponding Onsite Safety Assessment (OSA). One aspect of the OSA is to show that the package to be used for the transfer meets onsite acceptance criteria. The activity being analyzed in this report is the ...

During the summer of 1974, two accidental releases from a radioactive liquid-waste line at the Los Alamos Scientific Laboratory (LASL) resulted in plutonium contamination of a small area of land, a portion of a Laboratory parking lot, and a strip along an adjacent street. This report documents the immediate control actions and ...

The Hanford Site is the DOE's largest legacy waste site, with uranium (U) from plutonium processing being a major contaminant in its subsurface. Accidental release of highly concentrated high-level wastes left large quantities of U in the vadose zone under tank farms. The U contamination has been found in groundwater beneath ...

... ballast water discharge, intentional release as forage for sport fish, and accidental release from aquaculture facilities. ...

Aerosol transport tubes are often used to draw aerosol from desirable sampling locations to nearby air sampling equipment that cannot be placed at that location. In many plutonium laboratories at Los Alamos National Laboratory, aerosol transport tubes are used to transport aerosol from the front of room ventilation exhaust registers to continuous air monitors (CAMs) that are ...

The report discusses the control of accidental releases of ammonia to the atmosphere. Ammonia has an IDLH (immediately dangerous to life and health) concentration of 500 ppm, making it an acute toxic hazard. Reducing the risk associated with an accidental release of ammonia invol...

This thesis studied the management of hazard assessment of accidental releases and identified some relevant methods and how they could be used to optimize assessment of accidental releases to the environment. Further, the thesis produced an approach to ha...

The paper discusses control and mitigation systems for accidental releases of toxic chemicals. A review of the control/mitigation system data base developed during an EPA study reveals that the major control measure employed by industry for accidental releases is routine process ...

The paper considers the potential for damage from the accidental release of conductive carbon fibers

... Title : The Potential for Accidental Release of Carbon/Graphite Fibers from Resin Matrix Composites as Determined by Thermogravimetric Analysis. ...

Accidents and potential accidents involving plutonium in processing facilities and accidents are briefly reviewed. Data available regarding plutonium aerosol released are used to access the release of plutonium aerosols in potentially serious accidents, a...

The Mayak Production Association (Mayak PA) was established in the late 1940's to produce plutonium for the Soviet Nuclear Weapons Programme. In total, seven reactors and two reprocessing plants have been in operation. Today, the area comprises both military and civilian reactors as well as reprocessing and metallurgical plants. Authorized and accidental ...