Regarding the evaluation of the fault on the site, which was an issue in the examination of the Tomari Nuclear Power Station, which Hokkaido Electric Power Company aims to restart, the Nuclear Regulatory Commission concluded at the meeting on the 2nd that it was "not an active fault".
Eight years have passed since the application, as the examination of the Tomari Nuclear Power Plant, which Hokkaido Electric Power Company aims to restart, has taken a long time to determine whether the fault called "F-1" on the site is an active fault. doing.
The Regulatory Commission examined the data submitted by Hokkaido Electric Power Company in addition to the five field surveys so far at the review meeting on the 2nd, and found that the strata above the fault were from 120,000 to 130,000 years ago. As it turned out to be old, he concluded that "the data were convincing that it was not an active fault."
As a result, the examination of the Tomari nuclear power plant will proceed, but there are still issues such as the formulation of "standard ground motion" that will be the standard for the seismic design of the nuclear power plant and the evaluation of the tsunami expected from the earthquake on the eastern margin of the Sea of Japan. Therefore, the Regulatory Commission requested Hokkaido Electric Power Company to show the schedule for responding to the issues at the next review meeting.