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 
2008-03-14Stainless steel coils contaminated by Cobalt 60ItalyOther
2005-11-25I-192 sealed source stolenItalyORAT s.r.l. Company for industrial non destructive analysis
2004-03-01Sealed sources stolen from an industrial non destructive test companyItalyI. C. Q. MODI/Massafra (Taranto)
2014-07-30Object: Retrieval of Co-60 orphan source at Genoa port coming from Senegal.ItalyGenoa Voltri Port
2000-10-16Flooding event at the EUREX facilityItalyEUREX
2011-12-22Start of a fire in decontamination machine of former nuclear manufacturing plant of Bosco Marengo (AL) under decommissioningItalyBosco Marengo (AL)
2020-11-24Discovered Ra-226 source in Copper scrap metalsIranIslamic Republic of, Northwest border
2024-01-11Missing dangerous source during transport had been foundIndonesiaJambangan, Surabaya, East Java
1994-03-18OVEREXPOSURE OF OPERATORS WHILE CHARGING IRRADIATED FUEL BUNDLES INTO THE DISSOLVERIndiaTROMBAY PLUTONIUM PLANT
2014-05-17Exposure of a temporary worker in excess of annual dose constraint during transfer operation of irradiated neutron detector.IndiaTARAPUR-4
1991-04-07MISGRAPPLING OF FUEL BUNDLE MB-140 IN THE CORE OF UNIT NO. 2IndiaTARAPUR-2
1992-05-13UNIT-2 EMERGENCY CONDENSER LOOP A TUBE FAILUREIndiaTARAPUR-2
1992-08-19STARTUP AUXILIARY TRANSFORMER X03B OUTAGE EXCEEDING SEVEN DAYS LIMITIndiaTARAPUR-2
1992-08-21SOIL CONTAMINATION WHILE PUMPING OUT RAIN WATER FROM TAPS-TRAP TRANSFER LINE INSPECTION PITIndiaTARAPUR-1
1995-11-10Non-closure of primary steam isolating valves on auto during total loss of power incidentIndiaTARAPUR-1
1995-05-08INADVERTENT DISCHARGE OF LIQUID RADIOACTIVE WASTEIndiaTARAPUR WASTE IMM. PLANT
2012-06-23Radiation Exposure of workers to tritiumIndiaRAJASTHAN-5
1991-07-09HIGH ACTIVITY IN TB PITIndiaRAJASTHAN-2
1992-01-24HEAVY WATER LEAK FROM RUPTURED HOSEIndiaRAJASTHAN-2
1992-05-15DEUTERIUM EXCURSION IN MODERATOR COVER GASIndiaRAJASTHAN-2
1992-06-28TRITIUM ACTIVITY IN PROCESS WATER RETURNIndiaRAJASTHAN-2
1992-07-04INSPECTION HEAD LEFT IN CHANNEL G-09 IN UNIT-2IndiaRAJASTHAN-2
1992-09-03LOSS OF 250V DC CONTROL POWER SUPPLY TO 415 V BKRS CONNECTED WITH CLASS-III BUS L&LXIndiaRAJASTHAN-2
1992-09-17TRITIUM ACTIVITY DISCHARGE TO LAKEIndiaRAJASTHAN-2
1994-10-07NON RETRACTION OF SOUTH FUELLING MACHINE GUIDE SLEEVE FROM CHANNELS S-12IndiaRAJASTHAN-2
1990-10-16DROPPING OF SPENT FUEL BUNDLES OF CHANNEL P-09 IN SOUTH SIDEFUEL TRANSFER CAVITYIndiaRAJASTHAN-1
2019-01-16Loss and subsequent recovery of a radioactive sourceIndiaRajahmundry, Oil and Natural Gas Corporation Ltd.
2003-04-12Loss of an industrial radiography device containing 138 GBq of iridium 192IndiaOther
2003-04-25Heavy water leak from a defuelled coolant channel in a PHWR during Inspection, with reactor in shutdown stateIndiaNARORA-2
1993-02-27WATER INGRESS IN ION CHAMBER HOUSING OF CHANNEL B & E OF REACTOR REGULATING AND PROTECTIVE SYSTEMIndiaNARORA-2