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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: Tue, 07-05-1991
ERF description: Unit was shut down by operating personnel due to increase in the primary circuit controlled leaks rate up to 2 m3/h. The cause of excessive leak was the crack in the 18 mm Dn pipe of the line removing controlled leaks from the seal of main isolation valve no. 3. Radiation situtation at the plant and off-site remained unchanged. Breach of safe operation limits and conditions did not occur.
BASIS FOR RATING: Initiator - reactor coolant system leakage that would not prevent a controlled reactor shutdown. Criterion - degradation of defence-in-depth. Initial event - expected, real. Safety function availability: full, which corresponds to level 0/1 (A-1R).

DIFFICULTIES IN RATING:
ERF rating date: 01-01-1991
ERF contact person: Mr. V.I. Andreev
ERF address: Kitaisky Proezd 7, 103074 Moscow, Ukraine
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