Fission products and nuclear fuel behaviour under severe accident conditions part 1: Main lessons learnt from the first VERDON test

JOURNAL OF NUCLEAR MATERIALS

卷:495

Article

Pontillon, Y.^1,2  Geiger, E.¹  Le Gall, C.¹  Bernard, S.¹  Gallais-During, A.¹  Malgouyres, P. P.¹  Hanus, E.¹  Ducros, G.¹ 

[1] CEA, DEN, CAD, DEC, F-13108 St Paul Les Durance, France

[2] Royal Mil Coll Canada, Dept Chem & Chem Engn, 11 Gen Crerar Crescent, Kingston, ON K7K 7B4, Canada

关键词: LWR;    PWR;    VERDON tests;    HEVA-VERCORS tests;    Severe accidents;    Fission product behaviour;    Fission product releases;   

DOI  :  10.1016/j.jnucmat.2017.08.021

来源: Elsevier

【 摘 要 】

This paper describes the first VERDON test performed at the end of September 2011 with special emphasis on the behaviour of fission products (FP) and actinides during the accidental sequence itself. Two other papers discuss in detail the post-test examination results (SEM, EPMA and SIMS) of the VERDON-1 sample. The first VERDON test was devoted to studying UO2 fuel behaviour and fission product releases under reducing conditions at very high temperature (similar to 2883 K), which was able to confirm the very good performance of the VERDON loop. The fuel sample did not lose its integrity during this test. According to the FP behaviour measured by the online gamma station (fuel sight), the general classification of the FP in relation to their released fraction is very accurate, and the burn-up effect on the release rate is clearly highlighted. (C) 2017 Elsevier B.V. All rights reserved.

【 授权许可】

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