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Hydrogeochemical and stream sediment reconnaissance of the National Uranium Resource Evaluation Program primarily for the Rocky Mountain states of New Mexico, Colorado, Wyoming, and Montana, and the State of Alaska. Semiannual progress report, October 1978-March 1979

Description: During this six-month period, Hydrogeochemical and Stream Sediment Reconnaissance samples were collected by the Los Alamos Scientific Laboratory (LASL) from 623 locations in Colorado for a special study. Additional special studies are planned for nine other areas in the Rocky Mountain states in fiscal year 1979, plus some cleanup reconnaissance sampling in parts of four quadrangles that overlap state borders. Preparations for reconnaissance sampling of the entire North Slope region of Alaska ha… more
Date: July 1, 1979
Creator: Aamodt, P. L.; Bunker, M. E.; Waterbury, G. R. & Waller, R. A.
Partner: UNT Libraries Government Documents Department
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Quality assurance program for surveillance of fast reactor mixed oxide fuel analytical chemistry

Description: An effective quality assurance program for the chemical analysis of nuclear fuel is essential to assure that the fuel will meet the strict chemical specifications required for optimum reactor performance. Such a program has been in operation since 1972 for the fuels manufactured for the Fast Flux Test Facility. This program, through the use of common quality control and calibration standards, has consistently provided high levels of agreement among laboratories in all areas of analysis. The pap… more
Date: January 1, 1976
Creator: Rein, J. E.; Zeigler, R. K.; Waterbury, G. R.; McClung, W. E.; Praetorius, P. R. & Delvin, W. L.
Partner: UNT Libraries Government Documents Department
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Dissolution rates of /sup 238/PuO/sub 2/ and /sup 239/PuO/sub 2/ in 1M perchloric acid

Description: The dissolution rate of /sup 238/PuO/sub 2/ and /sup 239/PuO/sub 2/ in 1M HClO/sub 4/ was measured over a period of 200 days. When equal (150-..mu..g/l) masses of the oxides were compared, /sup 238/Pu was found to be released approximately five times faster than /sup 239/Pu. At the 10-..mu..Ci/ml activity level, /sup 238/Pu was released 100 times faster than /sup 239/Pu. The difference in dissolution rates is attributed to the difference in alpha particle specific activity of the two materials … more
Date: December 1, 1976
Creator: Matlack, G. M.; Patterson, J. H.; Nelson, G. B. & Waterbury, G. R.
Partner: UNT Libraries Government Documents Department
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Interaction of an iridium-clad RTG heat source unit with a simulated terrestrial environment. [/sup 238/PuO/sub 2/]

Description: An iridium-clad, 100-W /sup 238/PuO/sub 2/ sphere, a prototype for the multihundred-watt radioisotope thermoelectric generator, was exposed for 1 y to a simulated temperate humid climate in an environmental test chamber containing sandy soil. The hot sphere sank into the soil after the first rain, then gradually acquired a hard crust around it as a result of the rainwater reacting with the hot soil during successive rains. Time and temperature profiles of the sphere were recorded during the wee… more
Date: February 1, 1976
Creator: Patterson, J. H.; Herrera, B.; Nelson, G. B.; Matlack, G. M. & Waterbury, G. R.
Partner: UNT Libraries Government Documents Department
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Chemical assay of plutonium for safeguards

Description: From joint meeting of the American Nuclear Society and the Atomic Industrial Forum and Nuclear Enengy Exhibition; San Francisco, California, USA (11 Nov 1973). The plutonium-containing samples analyzed for nuclear safeguards purposes range from heterogeneous scrap materials to highly pure metal. The factors governing the selection of analytical methods are the quantities of plutonium represented by the sample and the representativeness of the sample. Product-type materials generally are charact… more
Date: April 30, 1974
Creator: Jackson, D. D.; Rein, J. E. & Waterbury, G. R.
Partner: UNT Libraries Government Documents Department
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Analytical methods for fissionable materials in the nuclear fuel cycle. Covering June 1974--June 1975

Description: Research progress is reported on method development for the dissolution of difficult-to-dissolve materials, the automated analysis of plutonium and uranium, the preparation of plutonium materials for the Safeguard Analytical Laboratory Evaluation (SALE) Program, and the analysis of HTGR fuel and SALE uranium materials. The previously developed Teflon-container, metal-shell apparatus was applied to the dissolution of various nuclear materials. Gas-- solid reactions, mainly using chlorine at elev… more
Date: October 1975
Creator: Waterbury, G. R.
Partner: UNT Libraries Government Documents Department
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Interaction of a /sup 238/Pu fueled-sphere assembly with a simulated terrestrial environment

Description: A /sup 238/Pu fueled sphere assembly (FSA) was exposed to a simulated humid environment on sandy soil for 3 y. After a 70-week exposure, plutonium was first detected in measurable quantities in rain and condensate samples. A core sample taken in the ninety-third week contained 302 ng of plutonium. Examination of the FSA after exposure revealed a hole in the bottom of the graphite impact shell (GIS) and a leaking weld on the vent assembly of the postimpact containment shell (PICS). These two ope… more
Date: February 1, 1981
Creator: Steinkruger, F. J.; Patterson, J. H.; Herrera, B.; Nelson, G. B.; Matlack, G. M.; Waterbury, G. R. et al.
Partner: UNT Libraries Government Documents Department
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Interaction of $sup 238$PuO$sub 2$ heat sources with terrestrial and aquatic environments

Description: Radioisotope thermoelectric generators used in space missions are designed with a great factor of safety to ensure that they will withstand reentry from orbit and impact with the earth, and safely contain the nuclear fuel until it is recovered. Existing designs, utilizing $sup 238$PuO$sub 2$ fuel, have proved more than adequately safe. More data about the interaction of this material with terrestrial and aquatic environments is continually being sought to predict the behavior of these heat sour… more
Date: January 1, 1975
Creator: Patterson, J. H.; Nelson, G. B.; Matlack, G. M. & Waterbury, G. R.
Partner: UNT Libraries Government Documents Department
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The Geochemical Atlas of Alaska

Description: The Geochemical Atlas of Alaska presents regional geochemical data as computer-generated images having concentration values of the elements displayed as colors and color intensities.
Date: October 1983
Creator: Los Alamos National Laboratory. Earth and Space Sciences Division. Geochemistry Group.
Partner: UNT Libraries Government Documents Department
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