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Current status of JRR-3

JRR-3の現状

車田 修

Kurumada, Osamu

東日本大震災が起きた2011年3月11日、JRR-3は定期自主検査期間中であったが、原子炉建屋及び安全上重要な機器に地震による深刻な損傷はなく放射能漏れも発生しなかった。その後、JRR-3は原子炉建屋の復旧作業及び全ての機器において健全性確認を行った。2012年6月、原子炉等規制法は福島第一原子力発電所の事故を受けて最新の技術的知見を導入した改正を行い、既存の原子炉施設等にもこの最新基準への適合を義務付けるため「バックフィット制度」を導入した。JRR-3は、2013年12月18日に施行された試験研究用原子炉に関する新たな規制に準拠することを確認し、2014年9月26日に原子炉設置許可申請をした。本シンポジウムではJRR-3の現状と今後の予定について報告を行う。

JRR-3 at Tokai site of JAEA was in its regular maintenance period, when the Great East Japan Earthquake took place on 11th March 2011. The reactor building with the solid foundations and the equipment important to safety survived the earthquake without serious damage, and no radioactive leakage has been occurred. Recovery work, check and test of the integrity for all components have been carried out. In response to the accident at Fukushima Daiichi NPS, the Reactor Regulation Act was revised in June 2012, for the purpose of introducing new regulations based on the latest technical analysis. The revision introduces the "backfit system" under which the existing nuclear facilities are also required to conform to new regulatory requirements. Now, we confirmed that JRR-3 conforms to new regulations on research and test reactor facilities which came into force on 18th December 2013. Therefore, we have applied for permission for changes in reactor installment license on 26th September 2014. We will present the current state of JRR-3 and future plan.

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