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Radiation standards and calibrations. FY-1981 annual report

Description: The research program encompasses: reviewing calibration standards, regulations, and handbooks; assuring that calibration procedures used are in agreement with technically accepted methods; maintaining basic radioactive sources and instruments that serve as radiological standards; and providing traceability to the National Bureau of Standards where possible. In addition, major efforts are being expended to upgrade the 318 calibration facility. This report focuses on major accomplishments during … more
Date: July 1, 1982
Creator: Roberson, P. L.; Yoder, R. C.; Fox, R. A.; Hooker, C. D.; Hogan, R. T.; Holbrook, K. L. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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/sup 238/Pu fuel-form processes. Quarterly report, October-December 1981

Description: Progress in the Savannah River /sup 238/Pu Fuel Form Program is summarized. Work during this period concentrated on the extensive cracking of the /sup 238/PuO/sub 2/ fuel form prior to encapsulation in the iridium containment shell for heat sources. This cracking results in increased recycle cost and decreased production efficiency. To better understand this cracking, Savannah River Laboratory (SRL) has made an extensive review of the development of /sup 238/PuO/sub 2/ fuel forms from small-sca… more
Date: May 1, 1982
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Gamma densitometer for measuring Pu density in fuel tubes

Description: A fuel-gamma-densitometer (FGD) has been developed to examine nondestructively the uniformity of plutonium in aluminum-clad fuel tubes at the Savannah River Plant (SRP). The monitoring technique is ..gamma..-ray spectroscopy with a lead-collimated Ge(Li) detector. Plutonium density is correlated with the measured intensity of the 208 keV ..gamma..-ray from /sup 237/U (7d) of the /sup 241/Pu (15y) decay chain. The FGD measures the plutonium density within 0.125- or 0.25-inch-diameter areas of th… more
Date: January 1, 1982
Creator: Winn, Willard G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Tested method to minimize plutonium assay discrepancies between laboratories

Description: Plutonium assay differences are frequently observed between laboratories exchanging plutonium dioxide powders. These differences are commonly the result of chemical changes and/or nonhomogeneities in sampled materials. The irregularities are often caused by moisture absorption during sampling, packaging, shipment, and storage of the materials. A method is proposed which eliminates the effects of chemical change in samples, particularly moisture absorption, and minimizes sampling error. A nondes… more
Date: January 29, 1982
Creator: Seiler, R. J.; Goss, R. L.; Rodenburg, W. W. & Rogers, D. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effect of pressure on the transient swelling rate of oxide fuel. [LMFBR]

Description: An analysis of the transient swelling rate of oxide fuel, based on fission-gas bubble conditions calculated with the FRAS3 code, has been developed and implemented in the code. The need for this capability arises in the coupling of the FRAS3 fission-gas analysis code to the FPIN fuel-pin mechanics code. An efficient means of closely coupling the calculations of swelling strains and stresses between the modules is required. The present analysis provides parameters that allow the FPIN calculation… more
Date: April 1, 1982
Creator: Gruber, E.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Pu-238 fuel form activities, January 1-31, 1982

Description: This monthly report for /sup 238/Pu fuel form activities has two main sections: SRP-PuFF facility and SRL fuel form activities. The program status, budget information, and milestone schedules are discussed in each main section. The Work Breakdown Structure (WBS) for this program is shown. Only one monthly report per year is processed for EDB.
Date: March 1, 1982
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Environmental and radiological safety studies: Interaction of /sup 238/PuO/sub 2/ heat sources with terrestrial and aquatic environments. Progress report, September 26-December 25, 1981

Description: Although existing radioisotope thermoelectric generator designs have proved more than adequately safe, more information is continually sought about the heat sources to improve their safety. The work here includes studies of the effects on the heat sources of terrestrial and aquatic environments and also of the effect of the heat sources on various simulated environments. This progress report presents recent data from environmental chamber and aquatic experiments and gives the present status of … more
Date: February 1, 1982
Creator: Matlack, G. M. & Patterson, J. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Uranium immobilization and nuclear waste

Description: Considerable information useful in nuclear waste storage can be gained by studying the conditions of uranium ore deposit formation. Further information can be gained by comparing the chemistry of uranium to nuclear fission products and other radionuclides of concern to nuclear waste disposal. Redox state appears to be the most important variable in controlling uranium solubility, especially at near neutral pH, which is characteristic of most ground water. This is probably also true of neptunium… more
Date: February 1, 1982
Creator: Duffy, C.J. & Ogard, A.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Reduced-size plutonium sample processing and packaging for the PAT-2 package

Description: A light-water container for the air transport of plutonium safeguards samples, the PAT-2 package, has been developed in the USA and is now licensed by the US NRC (Certificate of Compliance) and the US DOT (IAEA Certificate of Competent Authority). The very limited available space in this package for plutonium-bearing samples required the design of small-size canisters to meet the needs of international safeguards. The suitability of a new small canister and vial for powder and solution samples … more
Date: January 1, 1982
Creator: Kuhn, E.; Deron, S.; Aigner, H. & Andersen, J. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Space nuclear safety and fuels program. Progress report, October 1981

Description: This technical monthly report covers studies related to the use of /sup 238/PuO/sub 2/ in radioisotope power systems carried out for the Office of Coordination and Special Projects of the US Department of Energy by Los Alamos National Laboratory. Topics include impact tests and temperature response of a general purpose heat source, light-weight radioisotope heater unit, support systems, and helium release. (WHK)
Date: March 1, 1982
Creator: Bronisz, S. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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FBR pellet fabrication - density and dimensional control

Description: The fuel pellet fabricating experience described in this paper involved pellet processing tests using mixed oxide (PuO/sub 2/-UO/sub 2/) powders to produce fast breeder reactor (FBR) fuel pellets. Objectives of the pellet processing tests were to establish processing parameters for sintered-to-size fuel pellets to be used in an irradiation test in the Fast Flux Test Facility and to establish baseline fabrication control information. 26 figures, 7 tables.
Date: January 1, 1982
Creator: Rasmussen, D. E. & Schaus, P.S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Apparatus for dynamic measurement of gases released from materials heated under programmed temperature-time control

Description: This apparatus, a prototype of one being constructed for hotcell examination of irradiated nuclear materials, measures dynamic release rates and integrated volumes of individual gases from materials heated under controlled temperature-time programs. It consists of an inductively heated vacuum furnace connected to a quadrupole mass spectrometer. A computerized control system with data acquisition provides scanning rates down to 1s and on-line tabular and graphic displays. Heating rates are up to… more
Date: April 1, 1982
Creator: Early, J.W. & Abernathey, R.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Study of the hydrolysis of uranium hexafluoride by Fourier transform infrared spectroscopy

Description: The reaction of uranium hexafluoride with water has been studied by using Fourier transform infrared (FT-IR) spectroscopy. Several different methods for accomplishing this task have been carried out. In addition, interpretatins of the results have been made. These interpretations have been based on literature values for the reactants and for compounds analogous to possible products. It was shown that classical matrix-isolation techniques proved to be unsatisfactory for studying this reaction. O… more
Date: August 1, 1982
Creator: Anderson, S.P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Space nuclear safety and fuels program. Progress report, September 1981

Description: This technical monthly report covers studies related to the use of /sup 238/PuO/sub 2/ in radioisotope power systems carried ot for the Office of Coordination and Special Projects of the US Department of Energy by Los Alamos National Laboratory. Most of the studies discussed here are ongoing. Results and conclusions described may change as the work continues. Published reference of the results cited in this report should not be made without the explicit permission of the person in charge of the… more
Date: February 1, 1982
Creator: Bronisz, S. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Gamma-ray measurements for simultaneous calorimetric assay

Description: Gamma-ray measurements obtained in the course of developing a simultaneous calorimetric assay system are described. Gamma-ray measurements of the isotopic composition of six, well-characterized plutonium oxide samples were obtained while the samples were in the calorimeter. These samples represent a range of plutonium masses from 19 to 231 g and two isotopic compositions. The values of effective specific power determined from the gamma-ray measurements agree with the values determined from dest… more
Date: March 2, 1982
Creator: Rakel, D.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Fuel and cladding tests for fuel failure safety analysis. [LMFBR]

Description: Three systems for testing fuel pin cladding were developed to support the determination of the mode and location of cladding failure during transient overpower events or transient undercooled overpower (TUCOP) conditions. The TUCOP FCTT system consists of exposing cladding specimens to thermal and loading conditions typical of TUCOP events. The Mandrel Loading Test (MLT) system was designed to produce cladding deformation and failure by internal mechanical interaction loading of a heated claddi… more
Date: January 1, 1982
Creator: Hunter, C. W.; Johnson, G. D.; Hu, W. L.; Cannon, N. S.; Feigenbutz, L. V.; Hinman, C. A. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Detection and sizing of underbead cracks using ultrasonic nondestructive examination

Description: Ultrasonic nondestructive examination (NDE) will detect three mil deep underbead cracks in welds joining thin walled iridium hemishells. A correlation was developed to relate the amplitude of the signal reflected from the crack with crack wall area. The observed cracks occur in the weld underbead in the arc taper area during encapsulation of /sup 238/PuO/sub 2/ pellets for thermoelectric generators used in deep space exploration.
Date: February 11, 1982
Creator: Scarbrough, J.D. & Wierzbicki, W.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Pyrochemical processing of plutonium. Technology review report

Description: Non-aqueous processes are now in routine use for direct conversion of plutonium oxide to metal, molten salt extraction of americium, and purification of impure metals by electrorefining. These processes are carried out at elevated temperatures in either refractory metal crucibles or magnesium-oxide ceramics in batch-mode operation. Direct oxide reduction is performed in units up to 700 gram PuO/sub 2/ batch size with molten calcium metal as the reductant and calcium chloride as the reaction flu… more
Date: September 8, 1982
Creator: Coops, M.S.; Knighton, J.B. & Mullins, L.J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Effect of storage temperature on self-irradiation damage of /sup 238/Pu-substituted zirconolite

Description: /sup 238/Pu-substituted cubic zirconolite (CaPuTi/sub 2/O/sub 7/) was stored at ambient temperature, 575/sup 0/ K, and 875/sup 0/ K until alpha decay doses of 2.4 to 3.6 x 10/sup 25//m/sup 3/ had been accumulated. The ambient temperature material swelled to a saturation value of 5.5 vol %, and the originally crystalline structure was transformed to one with an amorphous matrix and small domains that had retained their crystallinity. At 575/sup 0/ K, lesser amounts of swelling (4.1 vol %) and tr… more
Date: January 1, 1982
Creator: Clinard, F. W.; Peterson, D. E.; Rohr, D. L.; Roof, R. B. & Hobbs, L. W.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Nuclear-fuel-cycle risk assessment: descriptions of representative non-reactor facilities, Sections 15-19

Description: Information is presented under the following section headings: fuel reprocessing; spent fuel and high-level and transuranic waste storage; spent fuel and high-level and transuranic waste disposal; low-level and intermediate-level waste disposal; and, transportation of radioactive materials in the nuclear fuel cycle. In each of the first three sections a description is given on the mainline process, effluent processing and waste management systems, plant layout, and alternative process schemes. … more
Date: September 1, 1982
Creator: Schneider, K.J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Vapor pressures and vapor compositions in equilibrium with hypostoichiometric plutonium dioxide at high temperatures

Description: Vapor pressures and vapor compositions in equilibrium with a hypostoichiometric plutonium dioxide condensed phase have been calculated for the temperature range 1500 less than or equal to T less than or equal to 4000 K. Thermodynamic functions for the condensed phase and for each of the gaseous species were combined with an oxygen-potential model to obtain the partial pressures of O/sub 2/, O, Pu, PuO, and PuO/sub 2/. New thermodynamic functions for the solid oxide were calculated from availabl… more
Date: June 1, 1982
Creator: Green, D.W.; Fink, J.K. & Leibowitz, L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Differential scanning calorimetry of metamict Pu-substituted zirconolite

Description: Samples of CaPuTi/sub 2/O/sub 7/ were prepared by cold pressing and sintering. Plutonium was substituted for zirconium in order to characterize radiation damage effects. The energy stored in a sample which had reached saturation in swelling after storage at ambient temperature was measured with a differential scanning calorimeter. The total energy of 6.6 +- 0.1 cal/g is released over the range 485 to 715/sup 0/C. The activation energy of annealing of the damage is 1.22 +- 0.05 eV. The temperatu… more
Date: January 1, 1982
Creator: Peterson, D.E. & Clinard, F.W. Jr.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Flight Systems Safety Program Progress Report: August 1982

Description: This technical monthly report covers studies related to the use of /sup 238/PuO/sub 2/ in radioisotope power systems carried out for the Office of Special Nuclear Projects of the US Department of Energy by Los Alamos National Laboratory. Most of the studies discussed here are ongoing. Results and conclusions described may change as the work continues.
Date: December 1, 1982
Creator: Bronisz, S. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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/sup 238/Pu fuel form processes. Quarterly report, July-September 1982

Description: Fracture tendency of pellets after final heat treatment or vacuum outgassing during production has been reviewed. A statistical analysis of fracture tendency has revealed a cyclical trend. The period of the cycle on average is about every 50 pellets. Phosphorus is considered detrimental to the impact behavior of iridium. Tests show that phosphorus is easily picked up by PuO/sub 2/ through a variety of pathways and is difficult to remove by heating techniques such as are possible in the PuFF Fac… more
Date: December 1, 1982
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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