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

INES 2: Incident

Impact on People and Environment:
  • Exposure of a member of the public in excess of 10 mSv.
  • Exposure of a worker in excess of the statutory annual limits.
Impact on Radiological Barriers and Control:
  • Radiation levels in an operating area of more than 50 mSv/h.
  • Significant contamination within the facility into an area not expected by design.
Impact on Defence-in-Depth:
  • Significant failures in safety ­provisions but with no actual ­consequences.
  • Found highly radioactive sealed orphan source, device or transport package with safety provisions intact.
  • Inadequate packaging of a highly radioactive sealed source.
▸ Legenda & explanation
date title location 
1998-11-10Workers exposure during weld testsUkraineZAPOROZHE-3
1998-10-02Switch off of a protection device during periodic inspectionFrancePHEBUS
1998-09-11Overexposure of two workersIndiaNARORA-2
1998-07-13Failure of safety system train during routine testingArmeniaARMENIA-2
1998-06-11Automatic shutdown of the reactor caused by spurious triggering of the containment spray system and jamming of a control cluster in the high position during this shutdownFranceBELLEVILLE-2
1998-06-06Unavailability of 1 out of 4 main steam safety and relief valve stationGermanyUNTERWESER
1998-06-04Reactor discharge due to deterioration of quality of water in the secondary circuit (power reduction)ArmeniaARMENIA-2
1998-05-19SG blow down pipe rupture at Kozloduy NPP unit 1 during refuelling outageBulgariaKOZLODUY-1
1998-05-13Large leak in the residual heat removal system (RHR)FranceCIVAUX-1
1998-05-08Loss of 4 TBq of Mo-99 in B(U) PackagingSouth AfricaSOUTH AFRICAN AE CORP.
1998-05-08Loss of 4 TBq of Mo-99 in B(U) packagingSouth AfricaSOUTH AFRICAN AE CORP.
1998-05-07Loss of ventilation in Dounreay fuel cycle areaUnited KingdomDOUNREAY
1998-04-21Modification to main steam and main feed isolation valves leading to degradation of reactor protection systemsUnited KingdomSIZEWELL-A UNIT B
1998-03-14Radiation overexposure of personnel while performing refuellig activitiesRussian FederationBILIBINO UNIT D
1997-09-27Closed valves in the containment spray pumps' suction lines during the non-nuclear phase of start-up after refuelingSwedenRINGHALS-4
1997-08-22Fresh fuel assembly damage during refuellingUkraineSOUTH UKRAINE-2
1997-08-20Sticking of one control rod during reactor protection actuation after the turbine control system's testHungaryPAKS-3
1997-07-14Leakage of water in the primary cooling system of AERE Reasearch CentreBangladeshTRIGA MARK II
1997-05-18Actuation of secondary shutdown system (SSS) on slow insertion of more than one rod of primary shutdown system (PSS)IndiaKAKRAPAR-1
1997-05-15Discovery of a Cs-137 radiation source on a scrap yardGermanyMETAL FOUNDRY, HETTSTEDT
1997-05-02Workers receive dose exceeding statutory annual dose limitSouth AfricaKOEBERG-1
1997-03-11Uncontrolled entry into room under reactor vessel during refuelling outageSouth AfricaKOEBERG-2
1997-03-07Exceeding the required operating limits, aggravated by safety culture problemsFrancePALUEL-1
1997-02-03Spillage of active liquorUnited KingdomBNFL, Sellafield
1997-02-02Release of airborne activity into the workplace resulted in a building evacuationUnited KingdomBNFL, Sellafield
1996-12-14Leakage on a piping connected to the primary circuitFranceDAMPIERRE-1
1996-11-21Operation of unit with insufficient containment functionNetherlandsBORSSELE
1996-11-01One of the emergency core cooling systems - the core spray system - was unavailable at Oskarshamn-2SwedenOSKARSHAMN-2
1996-10-04Emergency water/reheater drains distribution header damage inside the steam generatorsCanadaPOINT LEPREAU
1996-07-24Over-exposure of one worker during the industrial radiography activitiesIranGILAN