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 
1995-01-29HUMAN ERROR INITATED REACTOR TRIPUkraineCHERNOBYL-3
1995-01-01DESIGN DEFICIENCIES IDENTIFIED IN SEPARATION OF ELECTRICAL SYSTEM, AVOIDANCE OF COMMON CAUSE FAILURES IN THE REACTOR PROTECTION SYSTEM AND OVERPRESSURE RELEASE IN THE AUX BUILD.SwedenOSKARSHAMN-1
1994-12-11REACTOR AUTOMATIC SHUTDOWN BY SIGNAL OF NUCLEAR INSTRUMENTATION SYSTEMSYSTEMJapanONAGAWA-1
1994-11-24LOSS OF ELECTRICAL SUPPLY OF THE BANK PUMP STATION OF KOZLODUY NPPBulgariaKOZLODUY-1
1994-11-24LOSS OF OFF-SITE AC POWERBulgariaKOZLODUY-1
1994-10-17THROUGH WALL CRACK OF THE UPPER PART OF THE FUEL CHANEL TRACT NO. 41-13UkraineCHERNOBYL-3
1994-10-07NON RETRACTION OF SOUTH FUELLING MACHINE GUIDE SLEEVE FROM CHANNELS S-12IndiaRAJASTHAN-2
1994-09-28PROTECTION SYSTEM FOR INITIATING BLOW DOWN NOT COMPLETELY REESTABLISHED AFTER REFUELLING OUTAGESwedenBARSEBECK-1
1994-08-31LEAKING ISOLATION VALVES IN THE EMERGENCY CORE COOLING SYSTEMSwedenBARSEBECK-2
1994-08-31DAMAGE TO A SPENT FUEL ASSEMBLY DURING PREPARATORY OPERATIONS FOR REPROCESSINGRussian FederationMAYAK, RT-1
1994-08-26MISSING LUBRICATION GREASE TO THE ECC SYSTEM'S CORE SPRAY PUMPSSwedenBARSEBECK-1
1994-08-12INADVERTENT LOADING OF FUEL COLUMN DURING ON-POWER REFUELLING OF COOLANT CHANNELIndiaKALPAKKAM-1
1994-08-11OVERFLOW OF A SOLUTION IN THE MAPU WORKSHOP (MEDIUM ACTIVITY PLUTONIM WORKSHOP) AT THE UP2-400 PLANTFranceLA HAGUE
1994-07-14SIMULTANEOUS INOPERABILITY OF TWO HIGH-PRESSURE ECCS PUMPSHungaryPAKS-4
1994-07-11MALFUNCTION IN THE SYSTEM OF NEUTRON CONTROL OF REACTOR POWER FOLLOWING THE REPLACEMENT OF A CONTROL ROD SWITCHLithuaniaIGNALINA-2
1994-06-15UNINTENTIONAL SLOW INSERTION OF ALL CONTROL RODSSwedenFORSMARK-3
1994-05-25DEFECT OF MAIN GATE VALVE STUDSUkraineSOUTH UKRAINE-1
1994-05-18RUPTURE OF PRESTRESSED CABLE WIRES CONTAINMENTS DOME PARTUkraineSOUTH UKRAINE-1
1994-05-15DETERIORATION OF NATURAL CIRCULATION DURING REPAIR WORKS AT UNIT NO. 1BulgariaKOZLODUY-1
1994-04-18SCRAM DUE TO THE LEVEL DROP IN TANKS OF EMERGENCY REACTOR COOLING SYSTEMUkraineCHERNOBYL-3
1994-04-18INCORRECT SAFEGUARD REPORTINGSwedenRINGHALS-2
1994-04-12IRRADIATED FUEL ROD REMAINING IN THE FLASK WITHOUT COOLING - HUMAN ERRORIndiaCIRUS
1994-04-07PLANT TRANSIENT INITIALLY CAUSED BY THE LOSS OF CIRCULATING WATER PUMPS DUE TO HIGH MARSH GRASS/DEBRIS CONCENTRATIONSUnited States of AmericaSALEM-1
1994-03-18OVEREXPOSURE OF OPERATORS WHILE CHARGING IRRADIATED FUEL BUNDLES INTO THE DISSOLVERIndiaTROMBAY PLUTONIUM PLANT
1994-03-16REACTOR SCRAM CAUSED BY THE CABLE FIRE UNDER THE TURBINE HALL PREMISESUkraineKHMELNITSKI-1
1994-02-24DETERIORATION OF THE PRIMARY CIRCUIT INTEGRITYLithuaniaIGNALINA-2
1994-02-07FAILURE OF THE FOAM FIRE-EXTINGUISHING SPRINKLER SYSTEM TO OPERATE FOR 16 HOURS DUE TO FROZEN PIPESLithuaniaIGNALINA-1
1994-01-18CRACK IN CONTROL ROD HOUSINGSpainJOSE CABRERA-1 (ZORITA)
1994-01-03RENDERING AN EMERGENCY FEEDWATER PUMP AND AN AUXILIARY EMERGENCY FEEDWATER PUMP AVAILABLE FOR A SHORT TIME WITHOUT ADHERANCE TO THE REQUIREMENTS OF THE TECSPECSHungaryPAKS-4
1993-12-21TURBINE TRIP DUE TO PRESSURE DROP IN STEAM GENERATOR MAIN COLLECTORSlovakiaBOHUNICE-2