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http://dx.doi.org/10.5516/NET.2009.41.5.715

MODELING FAILURE MECHANISM OF DESIGNED-TO-FAIL PARTICLE FUEL  

Wongsawaeng, Doonyapong (Nuclear Technology Department, Chulalongkom University)
Publication Information
Nuclear Engineering and Technology / v.41, no.5, 2009 , pp. 715-722 More about this Journal
Abstract
A model to predict failure of designed-to-fail (dtf) fuel particles is discussed. The dtf fuel under study consisted of a uranium oxycarbide kernel coated with a single pyrocarbon seal coat. Coating failure was assumed to be due to fission gas recoil and knockout mechanisms and direct diffusive release of fission gas from the kernel, which acted to increase pressure and stress in the pyrocarbon layer until it ruptured. Predictions of dtf fuel failure using General Atomics' particle fuel performance code for HRB-17/18 and HFR-B1 irradiation tests were reasonably accurate; however, the model could not predict the failure for COMEDIE BD-1. This was most likely due to insufficient information on reported particle fuel failure at the beginning.
Keywords
Designed-to-fail; Dtf; Fuel Particles; Pyrocarbon; PISA; Failure; Fission Gas;
Citations & Related Records

Times Cited By Web Of Science : 1  (Related Records In Web of Science)
Times Cited By SCOPUS : 1
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