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

INES 5: Accident with wider consequences

Impact on People and Environment:
  • Limited release of radioactive ­material likely to require ­mplementation of some planned­ countermeasures.
  • Several deaths from ­radiation.
Impact on Radiological Barriers and Control:
  • Severe damage to reactor core.
  • Release of large quantities of radioactive material within an installation with a high probability of significant public exposure. This could arise from a major criticality accident or fire.
Legenda & explanation
date title location 
2011-03-12Abnormal rise of radioactive dosage value at site boundary (INES Level 4)JapanFUKUSHIMA-DAIICHI-1
2011-03-11The core damage by loss of all cooling function due to the big tsunami.JapanFUKUSHIMA-DAIICHI-2
2011-03-11The core damage by loss of all cooling function due to the big tsunami.JapanFUKUSHIMA-DAIICHI-3