Basic policy for decommissioning of nuclear power plant in Japan and the decommissioning of Fugen

日本における原子炉廃止措置の基本的考え方と「ふげん」の廃止措置

森下 喜嗣 

Morishita, Yoshitsugu

日本においては、役目を終えた原子力発電施設は510年の安全貯蔵の後に解体撤去することを基本としている。重水減速沸騰軽水冷却圧力管型原型炉である「ふげん」は、25年間の運転の後に原子炉を停止し、その廃止措置のための計画を整備してきた。本年2月に「ふげん」の廃止措置計画は認可され、2028年までに完了の予定で施設の解体に着手した。本稿では、日本における原子炉廃止措置の基本的考え方と「ふげん」の廃止措置について紹介する。

The basic policy for the decommissioning of the nuclear reactor in Japan was shaped in the 1990s. In the policy, it is premised that the nuclear power stations will be dismantled and removed after the safe store of the reactor from 5 to 10 years. Fugen, is the proto-type heavy water moderated, light water cooled, pressure tube type reactor with 165 MWe and has been shut downed 25 years operation. The program for decommissioning of Fugen had been prepared, and it was approved on Feb. of this year. Following the approval, we initiated to dismantle part of the facilities. It is expected that the whole decommissioning will be completed until 2028. In this paper, the basic policy for the decommissioning in Japan is outlined. The decommissioning program of FUGEN and relating R&D are also described.