Legenda & explanation
date INES title location
05-12-2005INES 2Both low head safety injection motors declared inoperable because of insufficient motor cooling water flowKOEBERG-1, South Africa
11-03-1997INES 2Uncontrolled entry into room under reactor vessel during refuelling outageKOEBERG-2, South Africa
12-08-1992INES 0UNIT SCRAM DUE TO SHORT-TIME DEENERGIZATION OF AUXILIARY POWER BUSESKOLA-1, Russian Federation
17-11-1992INES 2UNIT SCRAM OWING TO LOSS OF DC PANEL POWERKOLA-1, Russian Federation
02-02-1993INES 3UNIT SCRAM CAUSED BY GRID DISTURBANCES DUE TO TORNADOKOLA-1, Russian Federation
31-03-1991INES 1WRONG POSITIONING OF THE FUEL ASSEMBLY WHILE PERFORMING FUEL ROD CLADDING INTEGRITY TESTKOLA-2, Russian Federation
16-04-1992INES 1DEGRADED WATER CHEMISTRY IN THE PRIMARY CIRCUIT DUE TO CEMENT MORTAR INGRESS INTO THE BORATED WATER STORAGE TANKKOLA-2, Russian Federation
02-02-1993INES 3UNIT SCRAM CAUSED BY GRID DISTURBANCES DUE TO TORNADOKOLA-2, Russian Federation
03-03-1994INES 2COOLANT LEAK FROM THE AUXILIARY PRIMARY CIRCUIT CLEANUP SYSTEM DURING COOLDOWN OF THE PRIMARY CIRCUITKOLA-2, Russian Federation
16-05-1991INES 2FAILURE OF SAFETY SYSTEM TRAIN WHILE ROUTINE TESTINGKOLA-3, Russian Federation
07-12-1991INES 0DAMAGE TO RCP MAIN THRUST BEARING WHILE PREPARING PRIMARY FOR HYDROTESTKOLA-3, Russian Federation
12-09-1992INES 0LOW ACTIVITY WATER LEAK FROM THE CONTAMINATED CONDENSATE TANKKOLA-3, Russian Federation
27-05-1993INES 1UNIT SCRAM DUE TO INADVERTENT ACTUATION OF PRESSURIZER PILOT RELIEF VALVEKOLA-3, Russian Federation
02-02-1993INES 1UNIT SCRAM CAUSED BY GRID DISTURBANCES DUE TO TORNADOKOLA-3, Russian Federation
06-03-1994INES 0DEPRESSURIZATION OF CONTROL ROD HOUSING DISCOVERED DURING ROUTINE INSPECTIONKOLA-3, Russian Federation
02-02-1993INES 1UNIT SCRAM CAUSED BY GRID DISTURBANCES DUE TO TORNADOKOLA-4, Russian Federation
02-07-1993INES 0REACTOR TRIP DUE TO STEAM GENERATOR LOW LOW LEVEL SIGNALKORI 1, South Korea
28-10-1993INES 0REACTOR TRIP DUE TO GENERATOR TRIP CAUSED BY ACTIVATION OF GENERATOR PROTECTION RELAYKORI 1, South Korea
29-06-1994INES 0REACTOR TRIP DUE TO GROUND OF MAIN GENERATOR PROTECTION RELAYKORI 1, South Korea
16-08-1995INES 0REACTOR TRIP DUE TO PRESSURE DROP OF INSTRUMENT AIRKORI 1, South Korea
30-03-1996INES 0Reactor trip due to actuation of sensitive relay influenced by starting currentKORI 1, South Korea
31-03-1996INES 0Reactor trip due to improper operation of main feedwater bypass valveKORI 1, South Korea
09-02-2012INES 2Loss of shutdown cooling due to station blackout during refueling outageKORI-1, South Korea
10-11-1993INES 0REACTOR TRIP DUE TO FLUCTUATION OF PRESSURE IN MOISTURE SEPARATOR AND REHEATER (MSR) DRAIN TANKKORI-2, South Korea
21-12-1993INES 0REACTOR TRIP DUE TO MAIN CONDENSER VACUUM LOW SIGNALKORI-2, South Korea
25-09-1994INES 0REACTOR TRIP DUE TO TURBINE TRIP CAUSED BY STEAM GENERATOR LEVEL "HI-HI" SIGNALKORI-2, South Korea
25-02-1995INES 0SAFETY INJECTION DUE TO PRESSURIZER SPRAY VALVE STACKKORI-2, South Korea
27-11-1995INES 0REACTOR TRIP DUE TO ACTUATION OF MAIN GENERATOR PROTECTION RELAYKORI-2, South Korea
18-06-1996INES 0Reactor trip due to steam generator level low-low signalKORI-2, South Korea
18-10-1993INES 0REACTOR TRIP DUE TO FAST CLOSURE OF MAIN FEED ISOLATION VALVES (MFIV)KORI-3, South Korea