| date | INES  | title | location |
|---|
| 28-05-1990 | INES 1 | FEEDWATER TUBE RUPTURE DUE TO EROSION CORROSION | LOVIISA-1, Finland |
| 07-07-1990 | INES 1 | REACTOR COOLANT LEAK ON REACTOR TEMPERATURE DETECTOR | VANDELLOS-2, Spain |
| 30-06-1988 | INES 1 | DEGRADATION OF NATURAL CIRCULATION | PAKS-4, Hungary |
| 22-07-1990 | INES 1 | LOSS OF POWER SUPPY TO REACTOR COOLANT PUMPS DUE TO 6 KV CABLE FIRE | SMOLENSK-2, Russian Federation |
| 01-10-1990 | INES 1 | FAULTY WELD DETECTED ON PRIMARY CIRCUIT | OSKARSHAMN-1, Sweden |
| 21-12-1990 | INES 1 | REACTOR COOLANT LEAKAGE DUE TO FAILURE OF SEALING OF MAIN REACTOR FLANGE | KOZLODUY-2, Bulgaria |
| 05-02-1991 | INES 1 | PRESSURIZER DISCHARGE TANK MEMBRANE RUPTURE | KOZLODUY-2, Bulgaria |
| 06-12-1990 | INES 1 | TURBINE SJAES STEAMING DUE TO PLANT PERSONNEL ERROR | SMOLENSK-3, Russian Federation |
| 11-01-1991 | INES 1 | UNIT SHUTDOWN DUE TO SG-4 PULSE LINE RUPTURE | NOVOVORONEZH-5, Russian Federation |
| 31-03-1991 | INES 1 | WRONG POSITIONING OF THE FUEL ASSEMBLY WHILE PERFORMING FUEL ROD CLADDING INTEGRITY TEST | KOLA-2, Russian Federation |
| 11-05-1991 | INES 1 | UNPLANNED EXPOSURE OF PERSONNEL DURING REFUELLING | KOZLODUY-5, Bulgaria |
| 01-06-1991 | INES 1 | UNIT SHUTDOWN DUE TO PERSONNEL ERRORS AND DAMAGE TO RCP 6 KV BREAKER | KALININ-2, Russian Federation |
| 01-01-1990 | INES 1 | FUEL BUNDLE LATTICE SPACING FAILURES | LOVIISA-1, Finland |
| 28-05-1991 | INES 1 | FUEL ASSEMBLY TILTED OVER DURING CORE LOADING | RINGHALS-2, Sweden |
| 15-07-1991 | INES 1 | FIRE IN LOW LEVEL RADIOACTIVE WASTE STORAGE | KOZLODUY-1, Bulgaria |
| 18-07-1991 | INES 1 | EARTHQUAKE IN CENTRAL EUROPE | KOZLODUY-1, Bulgaria |
| 16-10-1990 | INES 1 | DROPPING OF SPENT FUEL BUNDLES OF CHANNEL P-09 IN SOUTH SIDEFUEL TRANSFER CAVITY | RAJASTHAN-1, India |
| 23-10-1990 | INES 1 | MG-TRIPPING ON UNDER/OVER FREQUENCY PROTECTION | KALPAKKAM-1, India |
| 07-01-1991 | INES 1 | SHUT DOWN OF MAPS UNITS 1 AND 2 FOLLOWING INABILITY TO MEET MINIMUM STAFF REQUIREMENT | KALPAKKAM-1, India |
| 07-03-1991 | INES 1 | HEAVY WATER SPILL FROM MODERATOR SYSTEM | KALPAKKAM-1, India |
| 07-04-1991 | INES 1 | MISGRAPPLING OF FUEL BUNDLE MB-140 IN THE CORE OF UNIT NO. 2 | TARAPUR-2, India |
| 03-05-1991 | INES 1 | FAILURE OF FUEL OIL LINE IN RUNNING DG-2 | KALPAKKAM-2, India |
| 18-07-1991 | INES 1 | REACTOR SCRAM AND COOLDOWN BECAUSE OF LEAKAGE IN A PRIMARY CIRCUIT MEASURING SYSTEM | PAKS-1, Hungary |
| 22-07-1991 | INES 1 | CONTAMINATION OF SOIL ON SITE | KOZLODUY-1, Bulgaria |
| 06-08-1991 | INES 1 | NEW RADIOACTIVE "HOT SPOTS" DISCOVERED AT KOZLODUY NPP | KOZLODUY-1, Bulgaria |
| 08-09-1991 | INES 1 | INADVERTENT STEAM RELEASE INTO THE REACTOR HALL DUE TO STOP OF PUMP IN RESIDUAL HEAT REMOVAL SYSTEM | BARSEBECK-2, Sweden |
| 14-08-1991 | INES 1 | DEVIATION FROM OPERATING INSTRUCTIONS | OSKARSHAMN-2, Sweden |
| 14-09-1991 | INES 1 | SMALL STEAM LEAK FROM THE MAIN FALNGE OF THE PRIMARY COOLANT PUMP NO. 6 | KOZLODUY-4, Bulgaria |
| 20-09-1991 | INES 1 | INCREASE ACTIVITY OF WASTE WATER FROM THE A-1 AND V-1 NPPS | BOHUNICE-1, Slovakia |
| 19-09-1991 | INES 1 | FUEL BUNDLE DAMAGE DURING TRANSFER TO SPENT FUEL BAY | GENTILLY-2, Canada |
