Abstract
The Power Energy Systems Division of JSME established a "Study Group on Optimum Nuclear Safety Regulation for Risk Reduction". This association is aimed at bringing together stakeholders from industry, government and academia, investigating and examining the latest knowledge on nuclear safety regulations, and contributing to the advancement of future safety regulations. We set the followings as research subjects for overseas visit. Plant Life Extension; we investigated the safety assessment at nuclear power plant in the US and the status of utilization of risk information to improve the safety of Long-Term Operation of nuclear power plant in Japan and to reflect the learned insights into our Code/Standards, Risk informed ISI; we investigated the US Risk-Informed Inspection approach and by proposing the utilization of the method to our regulator in Japan to optimize the inspection while reducing the unnecessary load of inspection and Classification of importance of FLEX equipment; we would like to investigate the approach method of safety classification of FLEX equipment so as to reflect this concept in the optimization of maintenance of SA equipment / DB equipment.
