Movement of Japanese Nuclear Codes and Standards

摘要

48 nuclear power plants have been commissioned to day in Japan. Capacity of nuclear power plant has been increased to 1200 Mwe and total generating capacity of Nuclear Power Plant have recently reached more than 25% of total generating capacity. Availability has been maintained at higher than 70% in recent years. The background of the high level of operation experience are utilities' and manufacturers' efforts however most important reasons are as follows: 1. Conservatism of Regulations 2. Efforts to prevent reoccurrence of trouble 3. Completeness of In-service Inspection