In-pile experiment analyses relevant to initiating-phase energetics

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野中 信之*; 丹羽 元*; 佐藤 一憲* ; F.Kasah*

not registered; not registered; not registered; F.Kasah*

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For the safety assessment of LMFBRs, much effort has been devoted to the analyses of LOF accident sequences with an emphasis on initiating-phase (IP) energetics (LOF-d-TOP event). Important knowledge and experiences on the IP energetics have been accumulated through reactor studies and in-pile experiment analyses, typically for the CABRI experiments. The present paper summarises the current understanding of key phenomenology relevant to the IP energetics based on the CABRl experiment analyses and the validation study for the PAPAS-2S, SAS3D and SAS4A codes.