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 
1996-04-30Exceeding allowed maximum primary coolant temperature during planned outageUkraineKHMELNITSKI-1
1996-07-24On-site radioactive contaminationUkraineKHMELNITSKI-1
2001-04-11Shut down of Rovno NPP unit 2 because of fall of a crane's boomUkraineROVNO-2
1992-12-13REACTOR SHUTDOWN BY THE ACTUATION OF THE EMERGENCY PROTECTION SYSTEM FOLLOWED BY NON-COMPLIANCE WITH THE SAFE OPERATING LIMITS ON STEAM GENERATOR COOLDOWN RATEUkraineROVNO-2
1994-05-25DEFECT OF MAIN GATE VALVE STUDSUkraineSOUTH UKRAINE-1
1994-05-18RUPTURE OF PRESTRESSED CABLE WIRES CONTAINMENTS DOME PARTUkraineSOUTH UKRAINE-1
1992-11-12UNIT OPERATION WITH ONE REACTOR PROTECTION SYSTEM CHANNEL OUTUkraineSOUTH UKRAINE-2
1993-02-12PLUTONIUM RECOVERY PLANT, B204United KingdomBNFL, Sellafield
2001-04-04Discovery of an Interlock Defeat applied to the Fuelling Machine d/P/dT Protection system without applicationUnited KingdomDUNGENESS-B1 UNIT A
2006-09-13Stolen Radiographic Exposure DeviceUnited States of AmericaBonded Inspections
1996-02-06LOSS OF OFFSITE POWER AND SAFETY INJECTIONUnited States of AmericaCATAWBA-2
1998-06-24Reactor trip and natural circulation cooldown due to loss of offsite powerUnited States of AmericaDAVIS BESSE-1
2005-06-27Potential Loss of Containment Due to Small Crack in TorusUnited States of AmericaFITZPATRICK
2003-12-02Missing Radioactive GaugeUnited States of AmericaGeismar
2005-05-02Potential Radiographer OverexposureUnited States of AmericaHouston
1995-10-31HIGH RADIATION LEVELS IN REACTOR BUILDINGUnited States of AmericaLASALLE-1
2005-05-29Lost Radiographic Exposure DeviceUnited States of AmericaOffshore Lousiana
1993-03-14PVNGS 2 STEAM GENERATOR TUBE RUPTUREUnited States of AmericaPALO VERDE-2
1994-04-07PLANT TRANSIENT INITIALLY CAUSED BY THE LOSS OF CIRCULATING WATER PUMPS DUE TO HIGH MARSH GRASS/DEBRIS CONCENTRATIONSUnited States of AmericaSALEM-1
2013-12-10Overexposure to Member of the PublicUnited States of AmericaSeminole, Texas/Wilco NDT
2016-12-31Overexposure to RadiographerUnited States of AmericaTulsa, Oklahoma/Tulsa Gamma Ray
2014-09-12Loss of radioactive source (Ir-192, APAVE, 2014)Viet NamAPAVE Company/Hồ Chí Minh city
2015-12-15Loss of radioactive source (Cs-137, Bac Kan, 2015)Viet NamBac Kan cement company/Bac Kan province
2006-05-29Loss and dispersion of radioactive source (Eu-152, 2006)Viet NamITRRE/Hanoi
2015-04-01Loss of radioactive source (Co-60, Pomina, 2015)Viet NamPomina steel company/Bà Rịa-Vũng Tàu province
2006-07-30Loss of radioactive source (Cs-137, Song Da, 2006)Viet NamSong Da cement company/Hoa Binh Province