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 
2006-07-30Loss of radioactive source (Cs-137, Song Da, 2006)Viet NamSong Da cement company/Hoa Binh Province
2014-09-12Loss of radioactive source (Ir-192, APAVE, 2014)Viet NamAPAVE Company/Hồ Chí Minh city
2001-11-29Loss of radioactive source Cs-137 included in a Beckman deviceRomaniaCERNAVODA-1
1999-01-28Loss of reactor annulus integritySpainTRILLO-1
2019-01-14Lost and Subsequent Recovery of a Radioactive SourcePakistanWajedo International Corporation (Private) Limited
2006-09-01Lost excepted package between France and AustriaFranceTransport International
2010-11-05Lost or stolen sources containing Co-60 PolandClosed Iron foundry in Town Lublin
2005-05-29Lost Radiographic Exposure DeviceUnited States of AmericaOffshore Lousiana
2006-05-12Lost radiopharmaceutical during its transportFranceTransport International
1992-08-18LOW ACTIVITY BORATED WATER LEAK FROM MAKE-UP SYSTEMCzech RepublicDUKOVANY-1
1994-07-11MALFUNCTION IN THE SYSTEM OF NEUTRON CONTROL OF REACTOR POWER FOLLOWING THE REPLACEMENT OF A CONTROL ROD SWITCHLithuaniaIGNALINA-2
1999-07-12Manual shutdown of Tsuruga Power Station Unit 2JapanTSURUGA-2
2011-09-13Melting of Orphan SourceBelgiumDuferco - la Louvière
1990-10-23MG-TRIPPING ON UNDER/OVER FREQUENCY PROTECTIONIndiaKALPAKKAM-1
1991-04-07MISGRAPPLING OF FUEL BUNDLE MB-140 IN THE CORE OF UNIT NO. 2IndiaTARAPUR-2
2015-04-14Missing Dangerous Source at Cárdenas, Tabasco, MéxicoMexicoCárdenas, Tabasco, México
2022-09-14Missing Dangerous Source at Estado de MexicoMexicoEstado de Mexico
2015-02-03Missing Dangerous Source at Salamanca, GuanajuatoMexicoSalamanca, Guanajuato
2023-03-22Missing Dangerous Source at Salamanca, Guanajuato, Mexico.MexicoSalamanca, Guanajuato, Mexico
1994-08-26MISSING LUBRICATION GREASE TO THE ECC SYSTEM'S CORE SPRAY PUMPSSwedenBARSEBECK-1
2003-12-02Missing Radioactive GaugeUnited States of AmericaGeismar
2018-12-18Missing Tc-99m GeneratorSwitzerlandSion, nuclear medicine institute
2000-04-15Moderator water leak in moderator roomIndiaNARORA-2
2006-12-01Multiple non compliance during a transportFranceTransport International
2001-08-09New equipment with CO-60 in steel flanges in non-nuclear research instituteNetherlandsSCRAPYARD
1991-08-06NEW RADIOACTIVE "HOT SPOTS" DISCOVERED AT KOZLODUY NPPBulgariaKOZLODUY-1
1994-10-07NON RETRACTION OF SOUTH FUELLING MACHINE GUIDE SLEEVE FROM CHANNELS S-12IndiaRAJASTHAN-2
2010-12-02Non Usual Event declared due to loss of outside power at Laguna Verde NPP U1MexicoLAGUNA VERDE-1
1995-11-10Non-closure of primary steam isolating valves on auto during total loss of power incidentIndiaTARAPUR-1
1995-02-12NOT FULLY INSERTED CONTROL RODSSwedenRINGHALS-3