Fission gas release of MOX fuel under RIA condition; Analysis result of BZ-3 and 4

Kakiuchi, Kazuo

Fission gas release from MOX fuel pellet during reactivity-initiated accident (RIA) was estimated by using SEM-EPMA data before and after the pulse irradiation experiment for high burnup MOX fuel (BZ-3, BZ-4). As a results of considering the relative change of Xe depression in Pu-spot and the crack enhancing effect in the periphery region, the amount of fission gas released form Pu-spot was estimated as roughly approximately 5% in BZ-4 and 10% in BZ-3. In comparison with the measured fission gas release by the puncture test, it is probable that fission gas releases also from the region excluding Pu-spot.

Language	:	English
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Meeting title	:	Fuel Safety Research Meeting 2019 (FSRM 2019)
Held date	:	2019/10
Location (city)	:	Mito
Location (country)	:	Japan
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Keywords	:	no keyword
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Registration No. : BB20191386
JAEA Abstracts No. :
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