Effects of oxidation and secondary hydriding on the strength of post LOCA cladding

Okada, Yuji

It is important to evaluate the fracture resistance of fuel rod against a seismic loading following a LOCA since the accident at the Fukushima Daiichi Nuclear Power Plant. In consideration of this, the effects of oxidation and secondary hydriding on the fracture resistance were investigated by four point bending test using the cladding tube with drilled holes. Based on the obtained results, it was suggested that the oxygen concentration in prior-beta layer affects the maximum bending stress. The maximum bending stress related to the secondary hydriding was estimated as about a half compared with that at the rupture opening position.

Language	:	English
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Meeting title	:	Fuel Safety Research Meeting 2018 (FSRM 2018)
Held date	:	2018/10
Location (city)	:	Mito
Location (country)	:	Japan
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Keywords	:	no keyword
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Registration No. : BB20181261
JAEA Abstracts No. :
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