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

INES 1: Anomaly

Impact on Defence-in-Depth
  • Overexposure of a member of the public in excess of statutory ­annual limits.
  • Minor problems with safety components with significant defence-in-depth remaining.
  • Low activity lost or stolen radioactive source, device or transport package.
(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 
1992-01-24HEAVY WATER LEAK FROM RUPTURED HOSEIndiaRAJASTHAN-2
2003-04-25Heavy water leak from a defuelled coolant channel in a PHWR during Inspection, with reactor in shutdown stateIndiaNARORA-2
2011-10-04Hazardous manipulation of a lightning rod with Ra-226PortugalVila Nova de Gaia
2016-10-24Fuel fail and emission from research reactorNorwayInstitute for Energy Technology, Halden
1990-01-01FUEL BUNDLE LATTICE SPACING FAILURESFinlandLOVIISA-1
1991-09-19FUEL BUNDLE DAMAGE DURING TRANSFER TO SPENT FUEL BAYCanadaGENTILLY-2
1991-05-28FUEL ASSEMBLY TILTED OVER DURING CORE LOADINGSwedenRINGHALS-2
2011-09-28Found radioactive sourceCzech RepublicPraha
2013-11-22Found orphan Cs-137 sourceFinlandTornio, Steel factory
2015-03-14Found category 4 source, shutter of the source container partly openAustriaAustrian-Italian border station
2000-10-16Flooding event at the EUREX facilityItalyEUREX
2004-05-16Fire on electric cables in Cattenom-2 NPPFranceCATTENOM-2
1991-07-15FIRE IN LOW LEVEL RADIOACTIVE WASTE STORAGEBulgariaKOZLODUY-1
2012-04-05Fire and abnormal primary circuit leak occured at Penly NPP n°2 reactorFrancePENLY-2
1990-05-28FEEDWATER TUBE RUPTURE DUE TO EROSION CORROSIONFinlandLOVIISA-1
1990-10-01FAULTY WELD DETECTED ON PRIMARY CIRCUITSwedenOSKARSHAMN-1
2008-05-30Fast stop of the main circulation pumps and simultaneous loss of their fly wheel systems during reactor scram.FinlandOLKILUOTO-1
1993-02-23FALL DOWN OF CONNECTOR FRAGMENTS INTO THE REACTOR VESSELSlovakiaBOHUNICE-2
1996-05-24Failure to replace horizontal flux detector shielding after maintenanceCanadaPOINT LEPREAU
1992-07-06FAILURE OF TWO DIESEL GENERATORS WHILE ROUTINE TESTING DURING UNIT MAINTENANCERussian FederationBALAKOVO-2
1994-02-07FAILURE OF THE FOAM FIRE-EXTINGUISHING SPRINKLER SYSTEM TO OPERATE FOR 16 HOURS DUE TO FROZEN PIPESLithuaniaIGNALINA-1
1991-05-03FAILURE OF FUEL OIL LINE IN RUNNING DG-2IndiaKALPAKKAM-2
2021-05-23Failure of a defectoscope during industrial radiography testHungaryBorsodchem PLC
1996-03-04FAILURE OF A CONTAINMENT ISOLATION VALVE AT A PERIODICAL TESTSwedenOSKARSHAMN-1
2014-05-04Exposure to Worker in Excess of Administrative LimitPakistanCHASNUPP-1 (C-1)
2014-05-17Exposure of a temporary worker in excess of annual dose constraint during transfer operation of irradiated neutron detector.IndiaTARAPUR-4
2011-09-12Explosion and fire at Centraco CENTRACO waste processing and conditioning plantFranceCENTRACO (Codolet, France)
1993-12-09EXCEEDING OF CL-CONCENTRATION IN PRIMARY CIRCUIT WATERSlovakiaBOHUNICE-2
1996-04-30Exceeding allowed maximum primary coolant temperature during planned outageUkraineKHMELNITSKI-1
2015-05-15Eu-152 lightning rods found in metal scrapThe Former Yugoslav Republic of MacedoniaPAVOR DOOEL SKOPJE, Scrap Metal Yard Veles