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

INES 1: Anomaly

Impact on Defence-in-Depth
  • Overexposure of a member of the public in excess of statutory ­annual limits.
  • Minor problems with safety components with significant defence-in-depth remaining.
  • Low activity lost or stolen radioactive source, device or transport package.
(Arrangements for reporting minor events to the public differ from country to country. Also, it is difficult to ensure precise consistency in rating events between INES Level-1 and Below scale/Level-0)
▸ Legenda & explanation
date title location 
1991-08-06NEW RADIOACTIVE "HOT SPOTS" DISCOVERED AT KOZLODUY NPPBulgariaKOZLODUY-1
2001-08-09New equipment with CO-60 in steel flanges in non-nuclear research instituteNetherlandsSCRAPYARD
2006-12-01Multiple non compliance during a transportFranceTransport International
2000-04-15Moderator water leak in moderator roomIndiaNARORA-2
2018-12-18Missing Tc-99m GeneratorSwitzerlandSion, nuclear medicine institute
2003-12-02Missing Radioactive GaugeUnited States of AmericaGeismar
1994-08-26MISSING LUBRICATION GREASE TO THE ECC SYSTEM'S CORE SPRAY PUMPSSwedenBARSEBECK-1
2024-01-11Missing dangerous source during transport had been foundIndonesiaJambangan, Surabaya, East Java
2023-03-22Missing Dangerous Source at Salamanca, Guanajuato, Mexico.MexicoSalamanca, Guanajuato, Mexico
2015-02-03Missing Dangerous Source at Salamanca, GuanajuatoMexicoSalamanca, Guanajuato
2022-09-14Missing Dangerous Source at Estado de MexicoMexicoEstado de Mexico
2015-04-14Missing Dangerous Source at Cárdenas, Tabasco, MéxicoMexicoCárdenas, Tabasco, México
1991-04-07MISGRAPPLING OF FUEL BUNDLE MB-140 IN THE CORE OF UNIT NO. 2IndiaTARAPUR-2
1990-10-23MG-TRIPPING ON UNDER/OVER FREQUENCY PROTECTIONIndiaKALPAKKAM-1
2011-09-13Melting of Orphan SourceBelgiumDuferco - la Louvière
1999-07-12Manual shutdown of Tsuruga Power Station Unit 2JapanTSURUGA-2
1994-07-11MALFUNCTION IN THE SYSTEM OF NEUTRON CONTROL OF REACTOR POWER FOLLOWING THE REPLACEMENT OF A CONTROL ROD SWITCHLithuaniaIGNALINA-2
1992-08-18LOW ACTIVITY BORATED WATER LEAK FROM MAKE-UP SYSTEMCzech RepublicDUKOVANY-1
2006-05-12Lost radiopharmaceutical during its transportFranceTransport International
2005-05-29Lost Radiographic Exposure DeviceUnited States of AmericaOffshore Lousiana
2010-11-05Lost or stolen sources containing Co-60 PolandClosed Iron foundry in Town Lublin
2006-09-01Lost excepted package between France and AustriaFranceTransport International
2019-01-14Lost and Subsequent Recovery of a Radioactive SourcePakistanWajedo International Corporation (Private) Limited
1999-01-28Loss of reactor annulus integritySpainTRILLO-1
2001-11-29Loss of radioactive source Cs-137 included in a Beckman deviceRomaniaCERNAVODA-1
2014-09-12Loss of radioactive source (Ir-192, APAVE, 2014)Viet NamAPAVE Company/Hồ Chí Minh city
2006-07-30Loss of radioactive source (Cs-137, Song Da, 2006)Viet NamSong Da cement company/Hoa Binh Province
2015-12-15Loss of radioactive source (Cs-137, Bac Kan, 2015)Viet NamBac Kan cement company/Bac Kan province
2015-04-01Loss of radioactive source (Co-60, Pomina, 2015)Viet NamPomina steel company/Bà Rịa-Vũng Tàu province
1990-07-22LOSS OF POWER SUPPY TO REACTOR COOLANT PUMPS DUE TO 6 KV CABLE FIRERussian FederationSMOLENSK-2