INES-event
INES 0

REACTOR TRIP DUE TO GENERATOR TRIP CAUSED BY ACTIVATION OF GENERATOR PROTECTION RELAY

Kori-1 was operated at full power. Power supply of generator protection relay was lost due to bad contact. At that time, breaker of 345 kV transformer was opened because of the overhaul of Kori-2. Opening of both breakers caused generator trip and reactor trip.
Justification: As full safety functions were available, the event is rated at level 0 as per users manual Part III, Table II, A1.

Location: KORI 1
Event date: Thu, 28-10-1993
Nuclear event report
Legenda & explanation