[1A15-20] 1F fuel debris 2

5:35 PM - 5:50 PM JST(8:35 AM - 8:50 AM UTC)

[1A20] Analysis of fuel debris obtained from inside the pedestal of Unit 2 of Fukushima Daiichi Nuclear Power Station(20) Estimation of energy absorption fraction based on analytical results for assessing hydrogen generation

*Honoka Kurosawa¹, Yuta Kumagai¹, Hirotomo Ikeuchi¹, Toru Kitagaki¹, Masato Mizokami², Shinya Mizokami² (1. JAEA, 2. TEPCO HD)

Keywords:

Fukushima Daiichi Nuclear Power Station accident,Fuel debris,PHITS,Solution analysis

To assess hydrogen generation from fuel debris, it is necessary to estimate the fraction of radiation energy emitted from the debris that is absorbed by water (energy absorption fraction). In this study, the energy absorption fraction was estimated using PHITS based on solution analysis results of samples obtained the first trial retrieval.