Study on influence of isolation condenser in Fukushima Daiichi Nuclear Plant Unit 1 accident with TRAC-BF1 code

Tamai, Hidesada; Akimoto, Hajime; Takase, Kazuyuki

The Fukushima Daiichi Nuclear Plant Unit 1 accident was investigated with TRAC-BF1 code in order to confirm the effect of an isolation condenser (IC) on core cooling analytically. The analysis shows that it is too late to cool fuel rods, once the core is heated up because of the lack of coolant derived from discharge of steam through a safety relief valve. It also shows that early start-up of the IC is essential to avoid the core meltdown under station blackout conditions.

Language	:	Japanese
Journal	:	Nihon Genshiryoku Gakkai Wabun Rombunshi
Volume	:	11
Number	:	1
Pages	:	p.8 - 12
Publication Year/Month	:	2012/03
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Paper URL	:	https://doi.org/10.3327/taesj.J11.037
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Keywords	:	福島第一原子力発電所事故; Fukushima Daiichi Nuclear Power Station Accident
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Article of JAEA R&D Review	:	Prediction of the Core Meltdown of the TEPCO's Fukushima Daiichi NPS Unit 1 Reactor; Evaluation of the Influence of an Isolation Condenser on Core Cooling Using the TRAC Code[/]
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Registration No. : AA20111068
JAEA Abstracts No. : 40000632
Paper Submission No. : 10548

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