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Report No.

FP chemistry in a high temperature region of LWR under a severe accident, 7; Surface analyses of Strontium compounds chemisorbed onto Stainless steel 304

Afiqa, B. M. ; Nakajima, Kunihisa  ; Miwa, Shuhei  ; Osaka, Masahiko  ; Oishi, Yuji*; Muta, Hiroaki*; Kurosaki, Ken*; Yamanaka, Shinsuke*

The release of Sr from fuel would be enhanced by the formation of volatile SrCl$$_{2}$$ in case of seawater injection into the core like as Fukushima Dai-ichi Nuclear Power Plant severe accidents. Since these volatile Sr vapor species can chemically react with stainless steel (SS) at high temperature, the chemisorption behavior is important in evaluating the Sr distribution in the reactor. Therefore, in order to verify the chemisorption behavior of SrCl$$_{2}$$ (generated by seawater injection) vapor species onto SS 304, chemical adsorption by the experiment was carried out and the compound formed on the SS 304 surface was analyzed. As a result, it was found a stable Sr/Si/O compound was formed on the surface of SS 304.



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