Automatic Shutdown of Unit 4 at South Korea's Hanul Nuclear Power Plant, Regulator Launches Investigation

The Nuclear Safety and Security Commission (NSSC) of South Korea reported on August 19 that Korea Hydro & Nuclear Power Co., Ltd. (KHNP) had reported the same day that Unit 4 of the Hanul Nuclear Power Plant, located in Uljin County, North Gyeongsang Province, automatically shut down at approximately 8:50 a.m.

The NSSC stated that Unit 4 of the Hanul Nuclear Power Plant is currently in a stable condition. No abnormal alarms were triggered by on-site radiation monitors, and no leakage of radioactive materials to the outside environment has been detected.

According to the notification, the NSSC's regional office for the Hanul Nuclear Power Plant is conducting inspections of on-site safety conditions. The regulatory body also plans to dispatch an investigation team comprising experts from the Korea Institute of Nuclear Safety (KINS) to the site to further confirm the cause of the automatic shutdown and related safety conditions.