Measurement and modelling of postirradiation fission product release from HTGR fuel particles under accident conditions

Technical Report · Fri Dec 01 04:00:00 EST 1978

DOI:https://doi.org/10.2172/6495626· OSTI ID:6495626

Myers, B F; Morrissey, R E

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 ThO/sub 2/, TRISO UC/sub 2/, and weak acid resin (WAR) particles over a range of burnups. The burnups were 0.25, 1.4 and 15.7% FIMA for ThO/sub 2/ particles, 23.5 and 74% FIMA for UC/sub 2/ 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 1200/sup 0/ to 2300/sup 0/C. In the temperature rise experiments, the heating rates were between 50/sup 0/ and 450/sup 0/C/h.

• Research Organization: General Atomic Co., San Diego, CA (USA)
• DOE Contract Number: EY-76-C-03-0167-065
• OSTI ID: 6495626
• Report Number(s): GA-A-15018
• Country of Publication: United States
• Language: English

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