Alternate fuel cycle technologies, nitrate-to-oxide conversion project. Progress report, January--June 1977
Work is being done at the Rocky Flats Plant (RFP) under contract from the Savannah River Operations Office (SROO) of the U.S. Energy Research and Development Administration (ERDA) to critically analyze and evaluate existing technology for converting plutonium nitrate to plutonium oxide, and to recommend flow sheets and equipment for this process. Seven such processes were compared using an expanded process-comparison scheme. The results of the comparison differed somewhat from the initial comparison made in September, 1976. The direct calcination methods, headed by the screw calciner process, received the highest ratings when operating experience was considered with a small weighting factor. These methods are much simpler than the others. The oxalate precipitation methods, headed by the plutonium(IV) oxalate precipitation and calcination process, received highest ratings when operating experience was strongly considered. Thus, in the long term, the screw calciner or other direct-conversion methods should be developed. For a plant to be built in the short term, however, an oxalate precipitation method should be used since a larger amount of experience exists with these processes. The block flow diagrams, material balances, and equipment flow sheets for each of the seven processes compared are included in this report. A process-design criterion is being prepared for a mechanical (screw calciner) direct-denitration process, and includes process flow sheets, a material balance, a process description, equipment performance specifications, the control philosophy and specifications, the operating philosophy, and a general process layout.
- Research Organization:
- Atomics International Div., Golden, Colo. (USA). Rocky Flats Plant
- Sponsoring Organization:
- US Energy Research and Development Administration (ERDA)
- DOE Contract Number:
- EY-76-C-04-3533
- OSTI ID:
- 7211272
- Report Number(s):
- RFP-2591; TRN: 78-000029
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
36 MATERIALS SCIENCE
PLUTONIUM DIOXIDE
PRODUCTION
PLUTONIUM NITRATES
CHEMICAL REACTIONS
WATER COOLED REACTORS
FUEL CYCLE
CALCINATION
COMPARATIVE EVALUATIONS
DENITRATION
FLOWSHEETS
PRECIPITATION
RESEARCH PROGRAMS
SPENT FUELS
ACTINIDE COMPOUNDS
CHALCOGENIDES
DECOMPOSITION
DIAGRAMS
ENERGY SOURCES
FUELS
NITRATES
NITROGEN COMPOUNDS
NUCLEAR FUELS
OXIDES
OXYGEN COMPOUNDS
PLUTONIUM COMPOUNDS
PLUTONIUM OXIDES
PYROLYSIS
REACTOR MATERIALS
REACTORS
SEPARATION PROCESSES
TRANSURANIUM COMPOUNDS
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