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Title: {sup 242}Pu CRITICAL MASS

Large amounts of {sup 242}Pu (0.3 to 0.8 mg/g UO{sub 2}) are present in spent nuclear reactor fuel with more being produced on a daily basis. For stabilization and reprocessing of spent fuel, criticality safety data are needed to ensure that {sup 242}Pu is handled safely. The calculated bare critical mass of {sup 242}Pu is 85.80 {+-} 3.46 kg at a density of 19.86 g/cm{sup 3}. This critical mass was derived based upon calculations of critical experiments that used up to 24 kg {sup 242}Pu. The previous critical mass derivation should be reasonably accurate until such time that integral data can be obtained.
Authors:
Publication Date:
OSTI Identifier:
772996
Report Number(s):
LA-UR-99-3509
TRN: US0106237
DOE Contract Number:
W-7405-ENG-36
Resource Type:
Conference
Resource Relation:
Conference: Conference title not supplied, Conference location not supplied, Conference dates not supplied; Other Information: PBD: 1 Jun 1999
Research Org:
Los Alamos National Lab., NM (US)
Sponsoring Org:
US Department of Energy (US)
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; 11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; CRITICAL MASS; CRITICALITY; REPROCESSING; SAFETY ANALYSIS; SPENT FUELS; STABILIZATION; PLUTONIUM 242; URANIUM DIOXIDE