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 
1991-09-11FAILURE OF TWO PRESSURIZER SPRAY LINESSwitzerlandBEZNAU-1
1989-06-26FAILURE OF THE MAIN FEEDWATER PUMP DUE TO ABSENCE OF REQUALIFICATION TEST AFTER MAINTENANCEJapanTSURUGA-2
1992-08-21FAILURE OF 5231 CB-5 TO CLOSE DURING FAILURE 5231 DG-1 TO START WHEN STATION CLASS IV SUPPLY FAILEDIndiaRAJASTHAN-1
1993-04-24EXCESSIVE FEEDWATER REGULATING VALVE OSCILLATIONS CAUSE WATER HAMMER INDUCED VIBRATION OF THE MAIN FEEDWATER PIPINGUnited States of AmericaNORTH ANNA-2
2007-07-16Events related to the earthquake on July 16thJapanKashiwazaki-Kariwa
2014-11-28Event during operation of Zaporizhzhya NPP Unit №3UkraineZAPOROZHYE-3
2004-09-20Event at a Studsvik laboratory producing radioactive sourcesSwedenStudsvik Nuclear AB
2002-06-11Empty Pressure Tube Damaged During Routine MaintenanceCanadaBRUCE-6
2001-03-21EMERGENCY DIESEL GENERATOR BEARING FAILURE & FIREUnited States of AmericaENRICO FERMI-2
1996-04-04Electrical fire in the control roomUnited States of AmericaPALO VERDE-2
2000-01-26Earthquake in the Indian State of GujaratIndiaKAKRAPAR-1
2013-10-08Discovery of damaged fuel rods during core unloading and fuel inspectionsSloveniaKRSKO
2022-02-27Discovered Ra-226 source in copper scrap metalsIranIslamic Republic of, West border
1991-07-26DEUTERIUM INCREASE IN MODERATOR COVER GAS SYSTEMIndiaKALPAKKAM-1
1994-03-06DEPRESSURIZATION OF CONTROL ROD HOUSING DISCOVERED DURING ROUTINE INSPECTIONRussian FederationKOLA-3
1992-11-04DENT ON THE PIPE OF REACTOR CHANNEL 10-33 TO THE DRUM SEPARATORLithuaniaIGNALINA-1
2024-01-04Declaration of Unusual Event (NUP-4.1)MexicoLAGUNA VERDE-1
1991-12-07DAMAGE TO RCP MAIN THRUST BEARING WHILE PREPARING PRIMARY FOR HYDROTESTRussian FederationKOLA-3
1996-01-07D2O leak from a calandria tube sheet plugIndiaKALPAKKAM-1
1995-01-01CRACKS IN THE REACTOR CORE SHROUD IN THE LID OF THE SHROUD AND IN REACTOR VESSEL INTERNALSSwedenOSKARSHAMN-1
1995-03-31CRACKS IN PUMP AND VALVE CASINGSSwedenOSKARSHAMN-1
1992-08-17CRACKS IN FEED WATER NOZZLESSwedenRINGHALS-1
1999-02-25Core instability occurred during maintenance performed in the switchyardSwedenOSKARSHAMN-2
1993-01-12CABLE CATCHING FIRE AT THE CONNECTION POINT FOR PORTABLE UTILIZING EQUIPMENTUkraineCHERNOBYL-3
1993-03-03BLOWN FUSE ON THE INVERTER CAUSED REACTOR TRIPSloveniaKRSKO
1996-09-14Blockage of sea water screen by jellyfishSouth KoreaULCHIN-2
2000-09-09Beloyarsk NPP Unit 3 scram due to events in the operation of the Urals power systemRussian FederationBELOYARSKY-3(BN-600)
1992-09-29AUTOMATIC SHUTDOWN OF UNIT-2 OF FUKUSHIMA DAIICHI NPPJapanFUKUSHIMA-DAIICHI-2
1994-07-14AUTOMATIC SHUT DOWN OF THE REACTOR AFTER GENERATOR PROTECTION ACTIVATIONSloveniaKRSKO
1995-11-12AUTOMATIC REACTOR UNLOADING DUE TO TURBOGENERATOR TRIP BY OPERATORLithuaniaIGNALINA-1