Evaluation of JRC source term methodology using MAAP5 as a fast-running crisis tool for a BWR4 Mark I reactor

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• 作者：M. Vela-Garcí ; a ; ^{monica.vela-garcia@ec.europa.eu" class="auth_mail" title="E-mail the corresponding author} ; K. Simola ^{kaisa.simola@ec.europa.eu" class="auth_mail" title="E-mail the corresponding author}
• 关键词：A ; activity ; AC ; alternating current ; ASTEC ; accident source term evaluation code ; BWR ; boiling water reactor is a type of light water nuclear reactor ; DC ; direct current ; DOSE ; MAAP5 module for the dose calculation ; ECCS ; emergency core cooling system ; EPRI ; electric power research institute ; FAI ; Fauske & Associates ; LLC is a world leader in nuclear ; industrial and chemical process safety what developed the MAAP code ; FASTNET ; FAST Nuclear Emergency Tools project ; FASTRUN ; TG FASTRUN ; Internat
• 刊名：Annals of Nuclear Energy
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：96
• 期：Complete
• 页码：446-454
• 全文大小：1720 K

文摘

JRC participated in the OECD/NEA FASTRUN benchmark reviewing fast-running software tools to model fission product releases during accidents at nuclear power plants. The main goal of fast-running software tools is to foresee the accident progression, so that mitigating actions can be taken and the population can be adequately protected. Within the FASTRUN, JRC used the MAAP 4.0.8 code and developed a methodology to obtain the source term (as activity released per radioisotope) of PWR and BWR station black-out accident scenarios. The modifications made in the MAAP models were limited to a minimum number of important parameters. This aims at reproducing a crisis situation with a limited time to adapt a generic input deck.

This paper presents further studies, where JRC analysed the FASTRUN BWR scenario using MAAP 5.0.2 that has the capability of calculating doses. A sensitivity study was performed with the MAAP 5.0.2 DOSE package deactivated, using the same methodology as in the case of MAAP 4.0.8 for source term calculation. The results were close to the reference LTSBO SOARCA case, independently of the methodology used. One of the benefits of using the MAAP code is the short runtime of the simulations.