Study on revaporization of deposited CsI from stainless steel 304 surface in high-temperature steam atmosphere

Rizaal, M. ; Miwa, Shuhei ; Suzuki, Eriko ; Imoto, Jumpei ; Osaka, Masahiko ; Goullo, M.*

We experimentally investigated the revaporization behavior of deposited CsI on the surface of structural material such as stainless steel in a subsequent high-temperature steam flow (i.e., reflood of the reactor at severe accident). The experimental results showed that the deposited CsI at 850 K could be vaporized, leaving the formation of Cs $_{2}$ CrO $_{4}$ on that once-deposited surface and consequently giving an increase of iodine release observed below 400 K.

Language	:	English
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Meeting title	:	日本原子力学会2021年春の年会
Held date	:	2021/03
Location (city)	:	東京(online)
Location (country)	:	日本
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Keywords	:	Cesium Iodide; revaporization; high-temperature steam; Cs $_{2}$ CrO $_{4}$ ; Fukushima Daiichi Nuclear Power Station Accident; 福島第一原子力発電所事故
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Cooperating Institute	:	VTT

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Registration No. : BB20200920
JAEA Abstracts No. :
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