INES Levels
INES N/A
INES 0
INES 1
INES 2
INES 3
INES 4
INES 5
INES 6
INES 7

INES 2: Incident

Impact on People and Environment:
  • Exposure of a member of the public in excess of 10 mSv.
  • Exposure of a worker in excess of the statutory annual limits.
Impact on Radiological Barriers and Control:
  • Radiation levels in an operating area of more than 50 mSv/h.
  • Significant contamination within the facility into an area not expected by design.
Impact on Defence-in-Depth:
  • Significant failures in safety ­provisions but with no actual ­consequences.
  • Found highly radioactive sealed orphan source, device or transport package with safety provisions intact.
  • Inadequate packaging of a highly radioactive sealed source.
▸ Legenda & explanation
date title location 
2014-10-14A practitioner’s regulatory annual exposure dose limit was exceededFranceBordeaux University Hospital - Pellegrin Hospital
1992-08-21ABNORMAL PRESENCE OF A FILTER ON A DRAINING CIRCUIT OF THE REACTOR CAVITYFranceCATTENOM-1
1994-03-31ACCIDENT CLOSE TO THE FORMER RAPSODIE REACTOR AT THE CADARACHE SITEFranceCADARACHE, RAPSODIE
2013-04-24Accidental exposure of a worker exceeding annual regulatory limit to the skinFranceBLAYAIS-4
1997-05-18Actuation of secondary shutdown system (SSS) on slow insertion of more than one rod of primary shutdown system (PSS)IndiaKAKRAPAR-1
2005-12-09Anomaly on safety pumps of 900 MW reactorsFranceAll NPP - generic
2003-12-31Anomaly on the water recirculation circuits of French pressurised water reactorsFranceAll NPP - generic
2012-09-26ASN decided to uprate as level 2 on the INES scale an event related to non-compliance with the requirements applicable to labelling, storage and on-site transfer of wet fissile materialsFranceAREVA-FBFC
2003-07-11Auto-trip of R21, following trip of Main Boiler Feed Pump, subsequent breach of Gas Circulator 22 Inlet Temp. limitUnited KingdomDUNGENESS-B1 UNIT A
1998-06-11Automatic shutdown of the reactor caused by spurious triggering of the containment spray system and jamming of a control cluster in the high position during this shutdownFranceBELLEVILLE-2
2021-07-22Automatic trip of both reactors following loss of off-site electric suppliesUnited KingdomHeysham 1 Power Station
2021-07-22Automatic trip of both reactors following loss of off-site electric suppliesUnited KingdomHeysham 1 Power Station
2019-05-10Auxiliary feedwater system actuation and manual reactor trip due to careless withdrawal of control rods at Hanbit Unit 1South KoreaHANBIT-1
1991-10-25BORATED WATER STORAGE TANK LEVEL REDUCTION TO 180 M3Russian FederationNOVOVORONEZH-4
2015-06-30Bordeaux University: discovery of radioactive sources and incidental exposure of personsFranceBordeaux University
2001-08-27Boron concentration below specification in borated water storage tanks of 3 out of 4 ECCS trainsGermanyPHILIPPSBURG-2
1991-09-16BORON MEASURING DEVICE CALIBRATION ERROR AT THE CHEMICAL LABORATORYFranceCHINON-B1
2005-12-05Both low head safety injection motors declared inoperable because of insufficient motor cooling water flowSouth AfricaKOEBERG-1
1993-02-02CAPSULE BREAKAGE IN CENTRAL THIMBLEBangladeshTRIGA MARK II
2004-08-25Circumferential break of Essential Service Water (ESW) hatch neck pipeSpainVANDELLOS-2
1992-07-28CLOGGED PUMP SUCTION STRAINERS IN THE WET WELL POOLSwedenBARSEBECK-2
1997-09-27Closed valves in the containment spray pumps' suction lines during the non-nuclear phase of start-up after refuelingSwedenRINGHALS-4
2010-07-20Co-60 orphan source discovered in a container of metal scraps in the Genova PortItalyGenova port
2008-10-07Cobalt-60 contaminated elevator buttons sold abroad by a French companyFranceMetallic products manufacturer
2001-10-15Cobalt-60 contaminated steel slabs sent to Italian shipyard from a foundry in MacedoniaItalySHIPYARDS
2013-09-26Common cause mechanical deficiency in control rodsNetherlandsHigh Flux Reactor / Petten
1995-03-24CONFIRMED DOSE ABOVE STATUTORY DOSE LIMIT PROBABLY DUE TO A WOUNDUnited KingdomBNFL, Sellafield
2002-03-11Consequential failure of Fuelling Machine Interlock at Buffer Storage TubeUnited KingdomHEYSHAM-1 UNIT A
2017-09-21Contamination event at research facilitySwedenStudsvik Nuclear AB
2010-05-26Contamination of 6 workers during the recovery of a gammagraphy Co-60 sourceFranceindustrial radiography