The Japanese central Fukushima reached level 6 nuclear alert, the second most serious of the International Nuclear Event Scale and Radiology, as the president of the French nuclear authority, André-Claude Lacoste. Level 7, the highest in the scale of measurement of nuclear events (serious accidents), corresponds to the release of radioactive materials outside with large effects on health and the environment and requires prolonged application of countermeasures.
The Chernobyl plant in Ukraine, is the only case so far, of a serious accident. On April 26, 1986 was declared the alert level 7 after the explosion of reactor number four of the Chernobyl plant in Ukraine but then belonged to the USSR. Level 6 (major accident) corresponds to the release, considerable, outside of radioactive materials and will likely require the application of countermeasures.
The Mayak plant, located in the Ural Mountains near Kyshtym (former USSR) had an accident at this level in September 1957. Level 5 (accident with wider consequences) is set when there is a limited release of radioactive material abroad or recorded number of deaths by radiation. Also if the reactor is suffering serious harm or if a release of large quantities of radioactive materials within the facility.
Often requires the application of countermeasures. Plant accidents at Windscale, Sellafield in Liverpool (United Kingdom) in 1957, and Three Mile Island in Harrisburg, Pennsylvania (EU) in 1979, were level 5. Level 4 (accident consequences at local) corresponds to the events in which there is a minor release of radioactive material.
Level 4 takes lead at least one death by radiation, there is a merger of fuels or release significant amounts of radiation within the facility. Not usually necessary countermeasures, unless local food controls. At this level are Tokaimura accidents (Japan) in 1999, and St. Laurent des Eaux (France) in 1980.
Level 3 (major incident) refers to cases in which exposure to radiation is ten times the limit established for workers and where there are health effects but not fatal (eg burns). It also includes pollution in areas not covered by the plant design. Even then it was used in Spain, the International Nuclear Event Scale and Radiological (INES, for its acronym in English), the accident in October 1989 by the Spanish central Vandellós (Tarragona) reached this level, according to experts.
Level 2 (incident) is the exposure of a person at doses above 10 mSv (milisiever), which is the annual limit that provides the European Atomic Energy Community (EURATOM) to the exposure of a worker over annual regulatory limits. Level 2 are also events in which there is a significant pollution in zone of the installation or when levels above 50 mSv / h in an area of operation.
Level 1 (anomaly) provides for the overexposure of a person over the statutory annual limits, minor problems in safety components and the loss or theft of radioactive sources.
The Chernobyl plant in Ukraine, is the only case so far, of a serious accident. On April 26, 1986 was declared the alert level 7 after the explosion of reactor number four of the Chernobyl plant in Ukraine but then belonged to the USSR. Level 6 (major accident) corresponds to the release, considerable, outside of radioactive materials and will likely require the application of countermeasures.
The Mayak plant, located in the Ural Mountains near Kyshtym (former USSR) had an accident at this level in September 1957. Level 5 (accident with wider consequences) is set when there is a limited release of radioactive material abroad or recorded number of deaths by radiation. Also if the reactor is suffering serious harm or if a release of large quantities of radioactive materials within the facility.
Often requires the application of countermeasures. Plant accidents at Windscale, Sellafield in Liverpool (United Kingdom) in 1957, and Three Mile Island in Harrisburg, Pennsylvania (EU) in 1979, were level 5. Level 4 (accident consequences at local) corresponds to the events in which there is a minor release of radioactive material.
Level 4 takes lead at least one death by radiation, there is a merger of fuels or release significant amounts of radiation within the facility. Not usually necessary countermeasures, unless local food controls. At this level are Tokaimura accidents (Japan) in 1999, and St. Laurent des Eaux (France) in 1980.
Level 3 (major incident) refers to cases in which exposure to radiation is ten times the limit established for workers and where there are health effects but not fatal (eg burns). It also includes pollution in areas not covered by the plant design. Even then it was used in Spain, the International Nuclear Event Scale and Radiological (INES, for its acronym in English), the accident in October 1989 by the Spanish central Vandellós (Tarragona) reached this level, according to experts.
Level 2 (incident) is the exposure of a person at doses above 10 mSv (milisiever), which is the annual limit that provides the European Atomic Energy Community (EURATOM) to the exposure of a worker over annual regulatory limits. Level 2 are also events in which there is a significant pollution in zone of the installation or when levels above 50 mSv / h in an area of operation.
Level 1 (anomaly) provides for the overexposure of a person over the statutory annual limits, minor problems in safety components and the loss or theft of radioactive sources.
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