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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, 03-10-1991
ERF description: When the plant was at the preparation stage of power generation after plant having been started-up, an operator changed the reactor mode switch from "start-up" to "operation" at the lower pressure of main steam than set-point value, subsequently the reactor was automatically shut down.
This plant had been manually shut down on November 20, 1990 because of an alarm "Primary Loop Recirculation Pump Motor Lubrication Oil Level Low".
There was no release of radioactive materials outside the reactor facility. Also there was no unplanned occupational exposure of employees working under radiation.
BASIS FOR RATING: The misoperation by an operator was a simple careless mistake. Thus alevel 0 of INES can be selected for this event by the defence-in-depthcriterion.
DIFFICULTIES IN RATING:
ERF rating date: 01-01-1991
ERF contact person: SUSUMU NAKAMURA
ERF address: CHIYODA-KU, TOKYO, JAPAN, Japan
ERF affiliation: ANRE/MITI, , 1-3-1 KASUMIGASEKI

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