| date | INES | title | location |
|---|
| 05-11-1991 | INES 2 | SIGNIFICANT CONTAMINATION IN THE CHEMICAL PURIFICATION LABORATORY IN THE CADARACHE RESEARCH CENTER | CADARACHE, France |
| 02-10-1991 | INES 2 | CONTAMINATION OF THE SECONDARY WATER DUE TO ERRORS OF THE SPECIAL WATER TREATMENT FACILITY PERSONNEL | ZAPOROZHE-2, Ukraine |
| 01-07-1991 | INES 2 | NEW FUEL ASSEMBLY DROPPING WHILE REFUELING | CHERNOBYL-2, Ukraine |
| 23-01-1991 | INES 2 | UNIT SHUTDOWN DUE TO BREACH OF NORMAL OPERATION CONDITIONS | ZAPOROZHE-1, Ukraine |
| 01-12-1990 | INES 2 | ESSENTIAL BUS DEENERGIZATION | SOUTH UKRAINE-1, Ukraine |
| 04-10-1990 | INES 2 | TG 2 TRIP DUE TO DEENERGIZATION OF 6 & 0.4 KV BUSES AND FAILURE OF TG STANDBY OIL PUMP TO START | IGNALINA-1, Lithuania |
| 01-11-1991 | INES 0 | PARTIAL DAMAGE TO POWER AND INSTRUMENTATION CABLES OF TURBINE BUILDING VALVES AND AUXILIARY COMPONENTS AS A RESULT OF IGNITION | CHERNOBYL-1, Ukraine |
| 11-10-1991 | INES 2 | UNIT SHUTDOWN DUE TO FIRE IN THE TURBINE BUILDING CAUSED BY ELECTRICAL EQUIPMENT FAILURE | CHERNOBYL-2, Ukraine |
| 10-07-1991 | INES 3 | RADIOACTIVE WATER SPILLAGE ON THE PLANT TERRITORY WHILE TRANSPORTING CASK WITH FUEL FRAGMENTS TO THE DRY RADWASTE REPOSITORY | BILIBINO GEN, Russian Federation |
| 12-05-1991 | INES 3 | RELEASE OF ACTIVE LIQUID FROM STORAGE TANK | BOHUNICE-1, Slovakia |
| 29-04-1991 | INES 2 | VIOLATION OF SAFETY REGULATIONS AT A WORKSHOP IN THE FUEL FABRICATION PLANT | PIERRELATTE, France |
| 12-06-1991 | INES 2 | PARTIAL INOPERABILITY OF THE REACTOR PROTECTION SYSTEM | CATTENOM-4, France |
| 13-09-1991 | INES 2 | METALLURGICAL FLAW IN SECONDARY STEAM PIPE | FESSENHEIM-1, France |
| 16-09-1991 | INES 2 | BORON MEASURING DEVICE CALIBRATION ERROR AT THE CHEMICAL LABORATORY | CHINON-B1, France |
| 20-09-1991 | INES 1 | INCREASE ACTIVITY OF WASTE WATER FROM THE A-1 AND V-1 NPPS | BOHUNICE-1, Slovakia |
| 14-08-1991 | INES 0 | INTERNAL LEAKAGE OF PRESSURIZER SAFETY VALVES | STADE, Germany |
| 14-09-1991 | INES 1 | SMALL STEAM LEAK FROM THE MAIN FALNGE OF THE PRIMARY COOLANT PUMP NO. 6 | KOZLODUY-4, Bulgaria |
| 14-08-1991 | INES 1 | DEVIATION FROM OPERATING INSTRUCTIONS | OSKARSHAMN-2, Sweden |
| 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 |
| 15-06-1991 | INES 2 | TEMPERATURE TRANSIENT DURING START-UP | BRADWELL UNIT A, United Kingdom |
| 10-08-1991 | INES 2 | PRIMARY WATER SPILLAGE WHILE REPAIR OF THE GATE VALVE AT RCP SUCTION DURING SCHEDULED MAINTENANCE | CHERNOBYL-2, Ukraine |
| 06-08-1991 | INES 1 | NEW RADIOACTIVE "HOT SPOTS" DISCOVERED AT KOZLODUY NPP | KOZLODUY-1, Bulgaria |
| 01-08-1991 | INES 2 | DEFECT IN THE COATING OF THE SUMPS (1300 PLANTS) | PALUEL-2, France |
| 10-04-1991 | INES 3 | UNAVAILABILITY OF LOW POWER EMERGENCY PROTECTION (LPEP) DUE TO LOSS OF IONIZATION CHAMBER POWER SUPPLY | CHERNOBYL-1, Ukraine |
| 04-05-1991 | INES 3 | PERSONNEL OVEREXPOSURE DURING PRECOMMISSIONING OPERATIONS INVOLVING HOT CELL | IGNALINA-2, Lithuania |
| 16-05-1991 | INES 2 | FAILURE OF SAFETY SYSTEM TRAIN WHILE ROUTINE TESTING | KOLA-3, Russian Federation |
| 22-07-1991 | INES 1 | CONTAMINATION OF SOIL ON SITE | KOZLODUY-1, Bulgaria |
| 18-07-1991 | INES 1 | REACTOR SCRAM AND COOLDOWN BECAUSE OF LEAKAGE IN A PRIMARY CIRCUIT MEASURING SYSTEM | PAKS-1, Hungary |
| 10-07-1991 | INES 2 | INADVERTENT DILUTION OF THE PRIMARY FLUID DURING A COLD SHUTDOWN | BELLEVILLE-2, France |
| 18-07-1991 | INES 1 | EARTHQUAKE IN CENTRAL EUROPE | KOZLODUY-1, Bulgaria |
