INES 3: Serious incident
Impact on People and Environment:
- Exposure in excess of ten times the statutory annual limit for workers.
- Non-lethal deterministic health effect (e.g., burns) from radiation.
Impact on Radiological Barriers and Control:
- Exposure rates of more than 1 Sv/h in an operating area.
- Severe contamination in an area not expected by design, with a low probability of significant public exposure.
Impact on Defence-in-Depth:
- Near accident at a nuclear power plant with no safety provisions remaining.
- Lost or stolen highly radioactive sealed source.
- Misdelivered highly radioactive sealed source without adequate procedures in place to handle it.
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| 1996-01-05 | A worker was injured by an overexposure of Iridium-192 lost source from a gamma radiograph | China | JIHUA |
| 2012-01-12 | Accident in industrial radiography | Peru | Chilca, Lima |
| 1999-01-08 | Accidental overexposure to radiation from Co 60 source | Turkey | SCRAPYARD |
| 1991-07-22 | BREACH OF UNIT LIMITING CONDITIONS FOR OPERATION WHILE PREPARING FOR RESTART AFTER MAINTENANCE DUE TO ECCS AND MSV UNAVAILABILITY | Russian Federation | SMOLENSK-2 |
| 1992-12-01 | COBALT-60 SOURCE LOSS | China | RADIATION FACILITY |
| 1993-03-31 | COMPLETE STATION BLACK OUT DUE TO FIRE IN TURBINE BUILDING | India | NARORA-1 |
| 2013-08-19 | Contaminated water leakage from a water tank | Japan | FUKUSHIMA DAIICHI |
| 2022-02-08 | Damaged radiation source out of regulatory control | Poland | Dąbrowa Górnicza/Mirków |
| 2002-03-08 | DETERIORATION OF REACTOR VESSEL HEAD | United States of America | DAVIS BESSE-1 |
| 2011-03-11 | Effect to the Nuclear Facilities from the earthquake on east area of Japan | Japan | FUKUSHIMA-DAIICI-1,2 FUKUSHIMA-DAINI-1, Japan |
| 2017-08-22 | Exposure to Hands of Quality Control Analyst | Australia | Australian Nuclear Science & Technology Org |
| 2014-02-14 | Exposure to workers | Peru | Ventanilla, Callao / SPI GAMMA |
| 1997-03-11 | Fire and Explosion at the Bituminization Demonstration Facility of the Reprocessing Plant | Japan | TOKAI REPROCESSING PLANT |
| 2005-04-20 | Fractured Pipe in Thorp Reprocessing plant | United Kingdom | BNFL, Sellafield |
| 2002-01-02 | High radiation levels measured on a package containing Iridium-192 | Sweden | Studsvik Nuclear AB |
| 2003-04-10 | Incremented radioactivity of the heat carrier during refueling outage at a time of fuel cleaning | Hungary | PAKS-2 |
| 1991-02-26 | INOPERABILITY OF VALVES AT THE DISCHARGE SIDE OF HPSI PUMPS IN THREE TRAINS DUE TO FAILURE TO CONNECT POWER CABLES | Ukraine | KHMELNITSKI-1 |
| 2008-08-25 | Iodine-131 release in the environment | Belgium | IRE-Fleurus |
| 2011-03-11 | Loss of cooling function and water supplying function on the spent fuel pool due to the big tsunami. | Japan | FUKUSHIMA-DAIICHI-4 |
| 1999-01-08 | Loss of radioactive Co60 source of 700 Ci | Turkey | IKITELLI |
| 2011-03-11 | Loss of the cooling function to the ultimate heat sink due to the big tsunami | Japan | FUKUSHIMA-DAINI-4 |
| 2011-03-11 | Loss of the cooling function to the ultimate heat sink due to the big tsunami | Japan | FUKUSHIMA-DAINI-2 |
| 2011-03-11 | Loss of the cooling function to the ultimate heat sink due to the big tsunami | Japan | FUKUSHIMA-DAINI-1 |
| 2013-12-02 | Missing Dangerous Source at Tepojaco, Hidalgo, Mexico | Mexico | Tepojaco, Hidalgo, Mexico |
| 2009-07-27 | Overexposure in the field radiography | Poland | ROil refinery, Gdansk |
| 2009-03-03 | Overexposure of a field radiography worker | South Korea | Argus, Jinju, South Korea |
| 2014-07-15 | Overexposure of a service technician repairing a biplane X-ray system | Switzerland | Hospital |
| 2008-08-01 | Overexposure of a worker | Spain | Tarragona |
| 2014-02-28 | Overexposure of radiation workers | Australia | Queensland field site west of Chinchilla |
| 2015-09-23 | Overexposure of two industrial radiographers | Iran | Islamic Republic of Iran, Oil refinery Company |
