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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: Fri, 09-08-1991
ERF description: The unit was operating at nominal power. During the routine test of the 3QW diesel generator (DG) the failure of this DG control system occurred. The DG was taken out of service for maintenance. 5 hours 41 minutes after the event the 3QW DG was tested under load and placed in expectation mode. While taking the affected DG out of service for repair personnel failed to test the two remaining safety system (SS) trains, which constitutes a breach of technological procedure requirements. Thus, a breach of safe operation conditions occurred. The testing of SS trains 1 and 2 was performed successfully according to the schedule.
BASIS FOR RATING: Initial event -failure of one SS train. Event - expected, postulated. Safety function availability - sufficient, which correponds to level 1/2 (C-1P). The event reveals safety culture deficiencies (item 4.2 b), therefore level 2 has been chosen.
DIFFICULTIES IN RATING:
ERF rating date: 01-01-1991
ERF contact person: Mr. V.I. Andreev
ERF address: Kitaisky Proezd 7, 103074 Moscow, Russian Federation
ERF affiliation: Min. of Nuclear Power and Industry, of the USSR, Dept. of Principle, Accident Dispatch

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