Overview
- Chubu Electric disclosed on January 5 that part of the data it submitted for the Hamaoka Nuclear Power Plant’s conformity review was handled inappropriately.
- The issue centers on how the plant’s design-basis ground motion, a key parameter for seismic design, was formulated.
- Company statements and reporting indicate the methods used differed from what was described at Nuclear Regulation Authority review meetings.
- Chubu said related figures tied to the ground-motion assessment were intentionally understated in reports to regulators.
- The company said it will set up an independent committee to investigate the matter.