INES Levels
INES N/A
INES 0
INES 1
INES 2
INES 3
INES 4
INES 5
INES 6
INES 7

INES 0: Deviation

No safety significance

(Arrangements for reporting minor events to the public differ from country to country. Also, it is difficult to ensure precise consistency in rating events between INES Level-1 and Below scale/Level-0)

▸ Legenda & explanation
date title location 
1993-03-18REACTOR SHUTDOWN BY THE ACTUATION EMERGENCY PROTECTION CAUSED BY THE LEVEL RAISE IN DRUM SEPARATORUkraineCHERNOBYL-3
1991-11-01PARTIAL DAMAGE TO POWER AND INSTRUMENTATION CABLES OF TURBINE BUILDING VALVES AND AUXILIARY COMPONENTS AS A RESULT OF IGNITIONUkraineCHERNOBYL-1
1995-10-27UNIT SHUTDOWN BECAUSE OF THE REFUELING MACHINE'S EQUIPMENT FAILUREUkraineCHERNOBYL-1
1996-06-28Radioactive contamination in the reactor hallUkraineCHERNOBYL-1
1995-08-11PERSONNEL INJURY IN TURBINE HALL DURING REFUELLINGSwitzerlandLEIBSTADT
1992-04-10LOSS OF AC POWER DURING REFUELING WITH UNLOADED REACTORSwitzerlandBEZNAU-2
1991-09-11FAILURE OF TWO PRESSURIZER SPRAY LINESSwitzerlandBEZNAU-1
2004-09-20Event at a Studsvik laboratory producing radioactive sourcesSwedenStudsvik Nuclear AB
1994-08-22ONE CONTROL ROD NOT FULLY INSERTED AFTER SCRAMSwedenRINGHALS-4
1992-06-01REPAIR OF REACTOR PRESSURE VESSEL HEAD PENETRATIONSwedenRINGHALS-2
1995-04-09UNSUCCESSFUL SWITCH OVER FROM 400 KV TO 130 KVSwedenRINGHALS-2
1992-08-17CRACKS IN FEED WATER NOZZLESSwedenRINGHALS-1
1993-01-23INSUFFICIENT CONTROL ROD FUNCTION DURING HOT START UP TESTSwedenRINGHALS-1
1993-02-28MINOR LEAKAGE IN A 32 MM VALVE BONNET SEALSwedenRINGHALS-1
1993-03-02MINOR LEAKAGE IN A 15 MM PIPE TO A PILOT VALVE IN THE PRESSURE RELIEF SYSTEMSwedenRINGHALS-1
1994-07-09RELEASE OF IODINE 131 FROM THE TURBINE SYSTEM AT RINGHALS 1SwedenRINGHALS-1
1999-02-25Core instability occurred during maintenance performed in the switchyardSwedenOSKARSHAMN-2
1995-03-31CRACKS IN PUMP AND VALVE CASINGSSwedenOSKARSHAMN-1
1995-01-01CRACKS IN THE REACTOR CORE SHROUD IN THE LID OF THE SHROUD AND IN REACTOR VESSEL INTERNALSSwedenOSKARSHAMN-1
2012-09-12Unauthorized movementSri LankaColombo Fort
1993-12-24FIRE IN ELECTRIC TRANSFORMERSpainALMARAZ-1
1994-12-04LEAKAGE IN MANUAL VALVE INTO TECHNICAL SPECIFICATIONSSpainALMARAZ-1
1996-05-15Reactor trip due to steam generator level low signalSouth KoreaYONGGWANG-4
1996-06-19Reactor trip due to the malfunction of optical isolatorSouth KoreaYONGGWANG-4
1996-07-10Reactor trip due to the malfunction of optical isolatorSouth KoreaYONGGWANG-4
1995-04-27REACTOR TRIP DUE TO FEEDWATER CONTROL VALVE CLOSURESouth KoreaYONGGWANG-3
1995-08-07REACTOR TRIP DUE TO MALFUNCTION OF OPTICAL ISOLATORSouth KoreaYONGGWANG-3
1995-09-06REACTOR TRIP DUE TO THE FAILURE OF CONTROL ROD SYSTEMSouth KoreaYONGGWANG-3
1996-02-13REACTOR COOLANT SPILLAGE DURING OVERHAULSouth KoreaYONGGWANG-3
1993-08-09REACTOR SHUTDOWN DUE TO LIGHTNINGSouth KoreaYONGGWANG-2