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in subjects: "Plutonium"

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Decommissioning of a grout- and waste-filled storage tank in the 200 East Area of the Hanford Site

A self-concentrating waste tank located at the Strontium Semiworks Facility in the 200 East Area of the Hanford Site will be decommissioned following waste removal. During a previous decommissioning phase, the tank, thought to be empty, was filled with grout to prevent it from collapsing over time. Several years later, an agitator rod was pulled from within the tank and found to contain significant amounts of radiation, indicating there was still radioactive waste in the tank. Several alternati… more

Date: January 1, 1991

Creator: Marske, S.G.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Organic components of nuclear wastes and their potential for altering radionuclide distribution when released to soil

Normal waste processing at the Hanford operations requires the use of many organic materials, chiefly in the form of complexing agents and diluents. These organic materials and their chemical and radiolytic degradation products, have potential for complexing fission products and transuranium elements, both in the waste streams and upon infiltration into soil, perhaps influencing future sorption or migration of the nuclides. Particular complexation characteristics of various nuclides which const… more

Date: August 1, 1980

Creator: McFadden, K.M.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Recovery of plutonium and americium from chloride salt wastes by solvent extraction

Plutonium and americium can be recovered from aqueous waste solutions containing a mixture of HCl and chloride salt wastes by the coupling of two solvent extraction systems: tributyl phosphate (TBP) in tetrachloroethylene (TCE) and octyl(phenyl)-N,N-diisobutylcarbamoylmethylphosphine oxide (CMPO) in TCE. In the flowsheet developed, the salt wastes are dissolved in HCl, the Pu(III) is oxidized to the IV state with NaClO/sub 2/ and recovered in the TBP-TCE cycle, and the Am is then removed from t… more

Date: January 1, 1987

Creator: Reichley-Yinger, L. & Vandegrift, G.F.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Effect of fuel recycling on radioactivity and thermal power of high-level wastes

The radioactivity and thermal power of high-level and plutonium-bearing wastes from the nuclear fuel cycle have been calculated for the years 1975 to 2005 using the rate of generation of such wastes projected for the Generic Environmental Statement on Mixed Oxide Fuel (NUREG-0002). Three modes of fuel recycle are considered: (1) no recycle, (2) uranium recycle, and (3) prompt uranium and plutonium recycle. These cases are compared with a respect to radioactivity and thermal power of the generat… more

Date: October 1, 1977

Creator: Wachter, J.W.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Plutonium scrap recovery at Savannah River: Past, present, and vision of the future

As a result of the changing requirement, plus environmental and regulatory commitments, SRP now has essentially completed its paradigm shift. SRP has been transformed from primarily a reprocessor of irradiated uranium targets to primarily a reprocessor of non-specification plutonium. This is the mission which will carry SRP into the 21st Century. Accomplishment of the defined goals for the three-pronged RandD program will achieve several objectives: exploit new processes for recovering low-grad… more

Date: January 1, 1988

Creator: Gray, Leonard W.; Gray, John H.; Blancett, Allen L.; Lower, William M. & Rudisill, Tracy S.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Studies of nuclear-waste migration in geologic media. Annual report, November 1976--October 1977

The confinement of nuclear wastes in geologic formations is being considered as a method of permanently disposing of the waste. Laboratory experiments (column infiltration, static absorption, and batch partitioning experiments) were performed with nuclides of Cs, Pu, Np, and Am to examine the migratory characteristics of long-lived radionuclides that could be mobilized by groundwaters infiltrating a nuclear waste repository and the surrounding geologic body. In column infiltration experiments, … more

Date: March 1, 1978

Creator: Seitz, M.G.; Rickert, P.G.; Fried, S.M.; Friedman, A.M. & Steindler, M.J.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Exploding the myths about the fast breeder reactor

This paper discusses the facts and figures about the effects of conservation policies, the benefits of the Clinch River Breeder Reactor demonstration plant, the feasibility of nuclear weapons manufacture from reactor-grade plutonium, diversion of plutonium from nuclear plants, radioactive waste disposal, and the toxicity of plutonium. The paper concludes that the U.S. is not proceeding with a high confidence strategy for breeder development because of a variety of false assumptions.

Date: January 1, 1979

Creator: Burns, S.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Investigations of the Natural Fission Reactor Program. Progress report, October 1976--September 1977

During Fiscal Year 1977, efforts of the Natural Fission Reactor Program have been directed toward (1) further measurements and predictions of reactor product migration at Oklo, (2) uraninite solubility studies, (3) radiogenic equilibria studies of natural Pu, Ra, and Th in U ores, (4) search for evidence of other natural fission reactors, and (5) supportive analytical measurements and procedures development.

Date: November 1, 1977

Creator: Apt, K.E. (ed.)

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Criticality experiments with mixed oxide fuel pin arrays in plutonium-uranium nitrate solution

A series of critical experiments was completed with mixed plutonium-uranium solutions having a Pu/(Pu + U) ratio of approximately 0.22 in a boiler tube-type lattice assembly. These experiments were conducted as part of the Criticality Data Development Program between the United States Department of Energy (USDOE) and the Power Reactor and Nuclear Fuel Development Corporation (PNC) of Japan. A complete description of the experiments and data are included in this report. The experiments were perf… more

Date: August 1, 1988

Creator: Lloyd, R.C. (Pacific Northwest Lab., Richland, WA (United States)) & Smolen, G.R. (Oak Ridge National Lab., TN (United States))

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Hanford Laboratories Operation monthly activities report, March 1959

This document details activities of the Hanford Laboratories Operation during the month of March 1959. (FI)

Date: April 15, 1959

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Plutonium, americium, and uranium in blow-sand mounds of safety-shot sites at the Nevada Test Site and the Tonopah Test Range

Blow-sand mounds or miniature sand dunes and mounds created by burrowing activities of animals were investigated by the Nevada Applied Ecology Group (NAEG) to determine the influence of mounds on plutonium, americium, and uranium distributions and inventories in areas of the Nevada Test Site and Tonopah Test Range. Those radioactive elements were added to the environment as a result of safety experiments of nuclear devices. Two studies were conducted. The first was to estimate the vertical dist… more

Date: January 1, 1977

Creator: Essington, E. H.; Gilbert, R. O.; Wireman, D. L.; Brady, D. N. & Fowler, E. B.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Fiscal year 1987 program plan

The Defense TRU Waste Program (DTWP) is the focal point for the Department of Energy in national planning, integration, operation, and technical development for TRU waste management. The scope of this program extends from the point of TRU waste generation through delivery to a permanent repository. The TRU program maintains a close interface with repository development to ensure program compatibility and coordination. The defense TRU program does not directly address commercial activities that … more

Date: December 1, 1986

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Methods and techniques of NDA (nondestructive assay)

Nondestructive assay (NDA) refers to techniques and instruments developed to measure nuclear materials in the many forms in which they occur throughout the fuel cycle. These techniques were first developed to support nuclear safeguards inspections and nuclear material accountability; they are also used extensively for process and quality control. Most accountability measurements are based on analytical chemistry and require that a sample be drawn and analyzed destructively. Destructive analysis… more

Date: January 1, 1988

Creator: Reilly, T. D.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Support of International Waste Management Agreements in the field of TRU Waste Management

The USDOE has implemented technical information exchange agreements in the field of TRU waste management with the United Kingdom, Federal Republic of Germany, Japan, and France. This has been done in an effort to minimize research and development costs, and ensured maximum safety to man and the environment during waste handling and disposal. In this report, the technical work plan for fiscal year 1986 is presented. (JDL)

Date: January 1, 1986

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Input and decayed values of radioactive liquid wastes discharged to the ground in the 200 Areas through 1975

Low and intermediate level liquid wastes from chemical separations processing of spent reactor fuel elements have been discharged to the ground in the 200-Areas since 1944. Large volumes of process cooling water, normally free of radioactive contaminants, are discharged to surface ditches or natural surface depressions (ponds). Lesser volumes of liquid waste such as steam condensates, process condensates, scavenged process waste supernatants, and plutonium processing wastes have been, or are be… more

Date: July 8, 1976

Creator: Anderson, J. D.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Interactive planning system for developing decommissioning and decontamination plans at Hanford

The 570-square mile Hanford Project contains facilities with varying degrees of radioactive contamination as a result of plutonium production operations. With the evolution of production requirements and technology, many of these have been retired and will be decommissioned and decontaminated (D and D). Planning for D and D at Hanford requires identification and characterization of contaminated facilities, prioritization of facilities for decommissioning, selection of D and D modes, estimating … more

Date: September 1, 1977

Creator: Litchfield, J. W. & King, J. C.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Uncertainty in the power distribution for a fast reactor burnup cycle

Demonstration that advanced reactor designs satisfy safety and performance goals requires the analysis of uncertainties in calculated reactor characteristics. Two of the important performance characteristics of advanced liquid metal reactors (LMR) are the burnup reactivity swing and the local power peaking factor. Previous work reported a study of the uncertainty in the burnup reactivity swing attributable to nuclear data uncertainties for a typical advanced LMR design. The results are reported… more

Date: January 1, 1989

Creator: Downar, D.J.; Khalil, H. (Purdue Univ., Lafayette, IN (USA) & Argonne National Lab., IL (USA))

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Rockwell Hanford Operations' 1978 radiological improvement program

This document describes the radiological improvement program (RIP) to be undertaken by Rockwell Hanford Operations during calendar year 1978. Actions taken in each facility to reduce exposure and to implement the Company's policy to conduct operations in a manner that assures radiation exposures to employees are maintained at the lowest levels reasonably achievable.

Date: December 30, 1977

Creator: Cunningham, D. S.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Evaluation of filter media for clarification of partially dissolved residues containing plutonium

A common process in the chemical industry employs the leaching of a desirable component from an insoluble substrate, followed by filtration to produce a clarified solution of the desirable component and a discardable residue. The work described here involved evaluating sintered metal filter media for separating dissolved plutonium from undissolved residues generated at various locations owned by the Department of Energy throughout the United States. The work was performed during a six-week assi… more

Date: October 9, 1989

Creator: Foley, E.S.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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Health, Safety, and Environment Division: Annual progress report 1987

The primary responsibility of the Health, Safety, and Environment (HSE) Division at the Los Alamos National Laboratory is to provide comprehensive occupational health and safety programs, waste processing, and environment protection. These activities are designed to protect the worker, the public, and the environment. Many disciplines are required to meet the responsibilities, including radiation protection, industrial hygiene, safety, occupational medicine, environmental science, epidemiology,… more

Date: April 1, 1988

Creator: Rosenthal, M.A. (comp.)

Item Type: Report

Partner: UNT Libraries Government Documents Department

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History of Met Lab Section C-I, May 1945 to May 1946

This is the final volume of a history of the research work of Seaborg and associates in the University of Chicago Metallurgical Laboratory, Chemistry Section C-1. The work was concerned with the development of chemical procedures for the extraction of plutonium, for the purification of plutonium and, in the later phases, for research on the isotopes of other heavy elements including other transuranium elements. The style of the history is that of a diary with footnotes giving additional informa… more

Date: June 1, 1980

Creator: Seaborg, G. T.

Item Type: Report

Partner: UNT Libraries Government Documents Department

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New computer-controlled precipitator at the Savannah River Plant

A new plutonium triflouride preciptation facility was successfully started up on the first attempt May 13, 1987 at the Savannah River Plant (SRP). This new facility provided a 75% reduction in radiation exposure, a substantial improvement in process performance, and elimination of the major SRP process bottleneck. This was accomplished through sound engineering, improved process control, process automation, and extensive testing of components, assemblies, and entire system prior to ''… more

Date: January 1, 1988

Creator: Moore, E. N.; Robbins, C. C. & Murdock, D. W.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Robotic sample preparation for radiochemical plutonium and americium analyses

A Zymate robotic system has been assembled and programmed to prepare samples for plutonium and americium analyses by radioactivity counting. The system performs two procedures: a simple dilution procedure and a TTA (xylene) extraction of plutonium. To perform the procedures, the robotic system executes 11 unit operations such as weighing, pipetting, mixing, etc. Approximately 150 programs, which require 64 kilobytes of memory, control the system. The system is now being tested with high-purity … more

Date: January 1, 1985

Creator: Stalnaker, N.; Beugelsdijk, T.; Thurston, A. & Quintana, J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Calculation of particulate dispersion in a design-basis tornadic storm from the Atomics International Nuclear Material Development Facility, Santa Susana, California

A three-dimensional numerical model is used to calculate ground-level air concentration and deposition (due to precipitation scavenging) after a hypothetical tornado strike at the Atomics International Nuclear Material Development Facility at Santa Susana, California. Plutonium particles less than 20 ..mu..m in diameter are assumed to be lifted into the tornadic storm cell by the vortex. The rotational characteristics of the tornadic storm are embedded within the larger mesoscale flow of the st… more

Date: July 1, 1980

Creator: Pepper, D.W.

Item Type: Report

Partner: UNT Libraries Government Documents Department