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Event Report Forms (ERFs) are filed to the IAEA. Sometimes there are multiple event reports, updating the rating, the event description. Here you only see the latest event report

ERF send date: Thu, 22-11-2007
ERF description: Detailed investigation on all power reactors (units from #1 to #7) is still underway at Kashiwazaki-Kariwa nuclear power station. Nuclear and Industrial Safety Agency (NISA) of Japan, on November 13th, finalised the INES ratings for the four incidents which are found after the earthquake occurred on July 16th 2007. Other events including the bended ventilation duct found at Units #1 to #5, and water spillage on B5th floor of the reactor complex building of Unit #1 have been repaired and are considered to impose no risk of radioactive materials leakage.

[Incidents and INES ratings]
Unit #1 through #7,
Water of the spent fuel storage pool spread on the operation floor of the reactor buildings. INES 0.

Unit #6
Water with radioactive material found at 3 and 3M floors (uncontrolled area). INES 0

Unit #3
Fire at house transformer. Out of scale

Unit #6
Break of joints of drive shaft at the reactor building crane. Out of scale

ERF rating date: 13-11-2007
ERF contact person: Shin MORITA
ERF address: 1-3-1 Kasumigaseki, Chiyoda, Tokyo 100-8901 Japan
ERF affiliation: Nuclear and Industrial Safety Agency

This map shows a selection of reports from nuclear and radiological incidents stored in the IAEA NEWS-database.
Locations are estimates. Contact us if a location is wrong.
The map shows a maximum of 100 incidents. If hundred incidents or more are within the map, the yellow perimeter indicates from where events are excluded. Drag or zoom the map to explore different areas.

Power Reactor Research Reactor Radwaste Facility Enrichment Facility Radiation Source Irradiation/Accelerator Facility Transportation

Fuel Fabrication Fuel Reprocessing Research Facility Mining/Milling Radioisotope Processing/Handling Facility Other