Citizens' Nuclear Information Center Blog

Lawsuit to Nullify the Rokkasho Reprocessing Plant’s Business License – Updates (1): Potential Activity of Continental Shelf Fringe Fault and Rokkasho Fault

By Kamisawa Chihiro   Recent earthquake off the eastern coast of Aomori Prefecture (December 8, 2025) An earthquake with a magnitude of 7.5 took place off the eastern coast of Aomori Prefecture (the hypocenter...

Questioning the Obsolescence of Nuclear Power Plants — Part 4. Lawsuit to Revoke the Permits for Operating Lifetime Extensions for Takahama Units 1 & 2 and Mihama Unit 3: Underestimated Neutron Irradiation Embrittlement of Aging Reactors

By Ino Hiromitsu, Nuclear Power Plant Aging Problem Research Group, Professor Emeritus of the University of Tokyo   Every reactor pressure vessel (RPV) in operation gradually becomes brittle, exposed to neutrons emitted from the...