Measurement and modelling of postirradiation fission product release from HTGR fuel particles under accident conditions
Description
A study was performed to provide a description of the release of fission products from failed fuel particles during a core heatup event in an HTGR. The need for this study was established in the Accident Initiation and Progression Analysis program. The release of fission products was measured from laser-failed BISO ThO2, TRISO UC2, and weak acid resin (WAR) particles over a range of burnups. The burnups were 0.25, 1.4 and 15.7% FIMA for ThO2 particles, 23.5 and 74% FIMA for UC2 particles, and 60% FIMA for WAR particles. The fission products measured were nuclides of xenon, iodine, krypton, tellurium, and cesium. Two types of experiments were performed: isothermal and temperature rise experiments. The range of the temperatures was from 12000 to 23000C. In the temperature rise experiments, the heating rates were between 500 and 4500C/h
Availability note (English)
MF available from INIS under the Report Number; Available from NTIS., PC A08/MF A01.
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Additional details
Publishing Information
- Imprint Pagination
- 152 p.
- Report number
- GA-A--15018
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 10461726
- Subject category
- S21: SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS;
- Descriptors DEI
- COATED FUEL PARTICLES; FISSION PRODUCT RELEASE; FUEL ELEMENT FAILURE; HTGR TYPE REACTORS; THORIUM OXIDES; URANIUM CARBIDES
- Descriptors DEC
- ACCIDENTS; ACTINIDE COMPOUNDS; CARBIDES; CARBON COMPOUNDS; CHALCOGENIDES; FUEL PARTICLES; GAS COOLED REACTORS; GRAPHITE MODERATED REACTORS; OXIDES; OXYGEN COMPOUNDS; REACTOR ACCIDENTS; REACTORS; THORIUM COMPOUNDS; URANIUM COMPOUNDS