Japanese utility Tokyo Electric Power (Tepco) plans to reactivate its long-idled 1,356MW No.6 reactor at the Kashiwazaki-Kariwa nuclear power plant after 19:00 Japan time (10:00 GMT) on 21 January, after completing an inspection of the reactor's control rods.
The Japanese utility has inspected all of the control rods at the No.6 reactor, after it identified errors in some of the control rod settings on 17 January. The company detected that an alarm designed to ensure safe management of the control rods — which are key to regulating nuclear fission — was not working correctly. The settings ensure safe operation of the reactor.
Tepco completed repairs on 18 January, but it decided to check the operation of all control rods as a safety precaution.
Tepco originally aimed to restart the No.6 reactor on 20 January. But it had to postpone the reactivation because of the technical issue.

