Modeling of barium release from severely damaged fuel
Iodine, tellurium, and cesium, are the primary radionuclides affecting the health consequences associated with fission product release for severe accidents. The next most important are strontium, barium, and ruthenium. Considerable progress has been made in the mechanistic understanding of iodine, cesium, tellurium, and noble gas release; however, no such mechanistic models currently exist for estimating the release of barium, strontium, and ruthenium. Rather, release predictions are based solely on empirical correlations from a limited data base. This paper presents a description of the primary physical/chemical models recently incorporated into the FASTGRASS-VFP (volatile fission product) code for the mechanistic estimation of barium release.
- OSTI ID:
- 5592547
- Report Number(s):
- CONF-851115-
- Journal Information:
- Trans. Am. Nucl. Soc.; (United States), Journal Name: Trans. Am. Nucl. Soc.; (United States) Vol. 50; ISSN TANSA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
220900* -- Nuclear Reactor Technology-- Reactor Safety
ACCIDENTS
ACTINIDE COMPOUNDS
ALKALINE EARTH METALS
BARIUM
CHALCOGENIDES
CHEMICAL REACTIONS
COMPUTER CODES
COMPUTERIZED SIMULATION
ELEMENTS
F CODES
FISSION PRODUCT RELEASE
FUEL ELEMENT FAILURE
METALS
OXIDES
OXYGEN COMPOUNDS
QUANTITY RATIO
RADIOACTIVITY TRANSPORT
REACTOR ACCIDENTS
REACTOR SAFETY
SAFETY
SIMULATION
URANIUM COMPOUNDS
URANIUM DIOXIDE
URANIUM OXIDES