| date | INES | title | location  |
| 03-12-1994 | INES 0 | TURBINE AND REACTOR TRIP DUE TOMFCV TROUBLE | YONGGWANG-1, South Korea |
| 13-07-1995 | INES 0 | SAFETY INJECTION DUE TO MAIN STEAM LINE LOW PRESSURE | YONGGWANG-1, South Korea |
| 23-01-1996 | INES 0 | Reactor trip due to spurious signal generated by mistake of worker | YONGGWANG-1, South Korea |
| 12-09-2023 | INES 2 | Accidential Exposure of Industrial Radiography Worker | Yeosu, South Korea |
| 31-12-2016 | INES 3 | Workers Exceeded Annual Whole Body Dose Limits | Yeosu, South Korea |
| 31-07-1993 | INES 2 | REFUELLING GRAB FAILURE AT WYLFA | WYLFA UNIT A, United Kingdom |
| 28-10-2011 | INES 2 | Over Exposure to Radiographer | Wyalusing, Pennsylvania, United States of America |
| 11-06-2014 | INES 2 | Irradiation of a worker during an intervention using gamma ray projector | Worksite in Pau (Pyrénées Atlantiques département), France |
| 20-10-1994 | INES 2 | HEAVY WATER SPILLAGE IN CONTAINMENT | WOLSONG-3, South Korea |
| 24-09-1995 | INES 0 | MANUAL REACTOR TRIP DUE TO FAILURE OF DRAIN VALVE IN AUTOCLAVE CIRCUIT | WOLSONG-3, South Korea |
| 12-07-1996 | INES 0 | Manual shutdown for repairing the fueling machine | WOLSONG-3, South Korea |
| 30-01-1996 | INES 2 | PARTIAL LOSS OF ESSENTIAL SERVICE WATER DUE TO FRAZIL ICE ON INTAKE TRASH RACKS | WOLF CREEK, United States of America |
| 06-03-2006 | INES 2 | Spill of High-Enriched Uranium Solution | Withheld, United States of America |
| 15-05-2017 | INES 2 | Overexposure to Radiographer | Wisconsin Rapids, Wisconsin/ACUREN INSPECTION, INC, United States of America |
| 30-09-2011 | INES 2 | Overexposure to Radiation Worker | Wichita, Kansas/ PFI, LLC, United States of America |
| 28-11-2002 | INES 1 | Improper performance of radiography | Welding Institute, Ljubljana, Slovenia |
| 30-09-2022 | INES 2 | Worker Exceeded Annual Whole Body Dose Limit | Waukegan, IL / Vista Medical Center East, United States of America |
| 25-03-1995 | [N/A] | GASEOUS RELEASE FROM NEARBY CHEMICAL PLANT | WATERFORD-3, United States of America |
| 20-07-1995 | INES 0 | AMMONIA RELEASE FROM NEARBY CHEMICAL PLANT | WATERFORD-3, United States of America |
| 27-11-1999 | INES 2 | Loss of reactor coolant system inventory | WATERFORD-3, United States of America |
| 13-02-2006 | INES 0 | Fire in Nuclear Waste Volume Reduction Facilities of JAEA | Waste Volume Reduction Facilities, Japan |
| 07-03-2016 | INES 1 | A sealed radioactive Cs-137 source contaminated the premises of waste management company | waste management company, Finland |
| 02-04-2010 | INES 0 | Worker Overexposure | Washington University St. Louis, United States of America |
| 11-12-2020 | INES 2 | Hands skin exposure | Wales, F-18 Radio-pharmacy, United Kingdom |
| 18-10-2012 | INES 3 | Overexposure of Workers | Wajedo International, Karachi, Pakistan |
| 14-01-2019 | INES 1 | Lost and Subsequent Recovery of a Radioactive Source | Wajedo International Corporation (Private) Limited, Pakistan |
| 18-07-2006 | INES 0 | Potential Flooding Common Mode Failure of Service Water Pumps | VIRGIL C. SUMMER-1, United States of America |
| 04-10-2011 | INES 1 | Hazardous manipulation of a lightning rod with Ra-226 | Vila Nova de Gaia, Portugal |
| 20-09-2019 | INES 2 | Overexposure of a worker while performing industrial radiography | Victoria-Control and Inspection Services, Spain |
| 14-03-2018 | INES 2 | Overexposure of a worker | Veterinary clinic in Tampere, Finland |