Study on physical mechanism in aging phenomenon of fuel debris, 3; Transition of total crack length by cyclic temperature fluctuation under water in solidified molten materials

Suzuki, Seiya ; Arai, Yoichi ; Okamura, Nobuo ; Watanabe, Masayuki

Clarification of aging phenomenon of fuel debris is one of the important issues because to evaluate that the safety during long term at defueling and storing. As a physical mechanism, we were investigated the effect of environmental temperature on the amount of cracks increased, and clarified the behavior of crack generation and propagation in submerged fuel debris.

Language	:	Japanese
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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	:	燃料デブリ; 経年変化; 物理学的メカニズム; クラック; 温度変化; 福島第一原子力発電所事故; Fukushima Daiichi Nuclear Power Station Accident
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Registration No. : BB20200819
JAEA Abstracts No. :
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