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 
2017-04-14Stolen gamma densitometerFranceSouth of France / Valérian Company
2020-09-19Stolen Catgeory-2 source at Ciudad Obregon, Sonora, México.MexicoCiudad Obregon, Sonora
2023-10-18Stolen cat-3 source in MexicoMexicoCiudad del Carmen, Tabasco
2017-10-16Stolen and recovered radioagraphy cameraMexicoTepic, Nayarit
2017-01-23Stolen and recovered nuclear densimeterMexicoCiudad Juarez, Chihuahua, Mexico
2012-09-03Stolen and lately recovered intact radioactive sourceBulgariaSofia
2002-04-05Steam Generator Tube FailureSouth KoreaULCHIN-4
1992-08-19STARTUP AUXILIARY TRANSFORMER X03B OUTAGE EXCEEDING SEVEN DAYS LIMITIndiaTARAPUR-2
2002-12-24Start-up Instrumentation ImpairmentCanadaBRUCE-7
2011-12-22Start of a fire in decontamination machine of former nuclear manufacturing plant of Bosco Marengo (AL) under decommissioningItalyBosco Marengo (AL)
2008-03-14Stainless steel coils contaminated by Cobalt 60ItalyOther
1996-04-21Spurious signal for actuation of the ESFAS caused by human errorCzech RepublicDUKOVANY-3
1995-05-14SPURIOUS OPENING OF REACTOR COOLANT LIQUID RELIEF VALVECanadaBRUCE-5
2008-07-07Spillage of uranium-bearing effluents into the environment at the SOCATRI nuclear facility (Saint-Paul-Trois-Châteaux (Drôme), France)FranceSOCATRI Bollène (Vaucluse)
1992-08-21SOIL CONTAMINATION WHILE PUMPING OUT RAIN WATER FROM TAPS-TRAP TRANSFER LINE INSPECTION PITIndiaTARAPUR-1
1993-01-02SMALL STEAM LEAK FROM THE MAIN FLANGE OF THE PRIMARY COOLANT PUMP NO. 4BulgariaKOZLODUY-2
1991-09-14SMALL STEAM LEAK FROM THE MAIN FALNGE OF THE PRIMARY COOLANT PUMP NO. 6BulgariaKOZLODUY-4
2004-06-06Small leakage from Residual Heat Removal System.Czech RepublicTEMELIN-2
1996-05-15Small leak of radioactive water from auxiliary building no. 2BulgariaKOZLODUY-3
1992-09-22SMALL FIRES CAUSED BY SHORT-CIRCUITBulgariaKOZLODUY-5
1997-01-17Slow insertion of control rodsSpainALMARAZ-2
1997-07-26Slightly increased radioactivity release outside the reactor while preparing for removal of leaky fuel assemblyRussian FederationMIR-M1, RU-0013
2002-02-16Site contamination at Khmelnitsky NPPUkraineKHMELNITSKI-1
1994-07-14SIMULTANEOUS INOPERABILITY OF TWO HIGH-PRESSURE ECCS PUMPSHungaryPAKS-4
2001-04-11Shut down of Rovno NPP unit 2 because of fall of a crane's boomUkraineROVNO-2
1991-01-07SHUT DOWN OF MAPS UNITS 1 AND 2 FOLLOWING INABILITY TO MEET MINIMUM STAFF REQUIREMENTIndiaKALPAKKAM-1
1995-05-02SHORT VIOLATION OF LIMITS AND CONDITIONS DUE TO ONE AND A HALF HOUR UNAVAILABILITY OF 2 OUT OF 3 SAFETY SYSTEMSCzech RepublicDUKOVANY-1
1995-12-08Secondary sodium leakage in the prototype fast breeder reactor MonjuJapanMONJU
2004-03-01Sealed sources stolen from an industrial non destructive test companyItalyI. C. Q. MODI/Massafra (Taranto)
1996-10-06Scram of the reactor caused by a wrong operation of the control room operatorCzech RepublicDUKOVANY-4