１．はじめに 日本再生のためには、既設原子力発電所の有効活用によって、安全で安価な安定電源を供給することが必須である。リスクを適正に管理することによって、世界中で実施されている手法を日本に導入することで、安全保障においても、経済発展においても、最も効果的な手法である。 具体的には、定量的リスク評価手法(PRA)を、事業者・規制の共通の安全指標とし、国民の理解を得ながら、安全性を向上し続けることである。安全向上策としては、(1)ROP(原子炉俯瞰プロセス)によるリスク情報を活用した安全パフォーマンス評価手法......

The Fukushima-Daiichi NPP Accident was caused by the wrong people and organization attitude for the nuclear safety. The Comprehens ive RISK is the most important factor to keep the safety for nucar system. However, the activities were based on the compliance only. Nobody consider the risk itself. To improve the experiences on RISK, all of the people and organization should always consid er the risk. The maintenance engineering based on the comprehensive risk will support the improvement of nuclear plant ex...
英字タイトル:
Maintenance Engineering considering Fukushima-Daiichi Accident

In this study, an alternative method to retrieve fuel debris and MCCI (Molten Corium Concrete Interaction) products in Fukushima Daiichi Nuclear Power Plants is proposed, where geopolymer is used for semi-stabilization of those debris. Facing the realization of this method, the fluidity and the setting time of geopolymer are regarded as one of the problems. Thus, for investigating those properties, slump flow experiment, funnel experiment and viscosity measurement will be done. In addition, the experimen...
英字タイトル:
Study on application of geopolymer to decommissioning of Fukushima Dai-ichi Nuclear Power Plant