[1D01-04] Environmental Radioacitivty and Remediation

[1D02] Similarity of composition between silicate glass of the Type A insoluble Cs particles and filtersof stand-by gas treatment system line in Unit 3

*Hiroki Hagiwara¹, Junpei Imoto¹, Akihide Hidaka^1,2 (1. JAEA, 2. Khalifa Univ.)

Keywords:Insoluble Cs particles (Type A), Silicon, HEPA filter, Electron probe micro analyzer, Fukushima Dai-ichi Nuclear Power Plant accident

The structural component of glass fiber of HEPA filter in Unit 3 was analyzed by EPMA to confirm recently proposed formation mechanism of insoluble Cs particles released during the Fukushima Accident. The results suggested that the silicon in the Type A of insoluble Cs particles was derived from the HEPA filter in Unit 3.