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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, 12-05-1992
ERF description: On April 19, 19992 at 08:58 a.m. while unit 4 was running at rated power a fire-alarm signal emerged indicating a fire in make-up pumps oil systems compartment. The fire-fighting system pumps were actuated. Inspection of the compartment revealed neither ignition nor fume therefore the pumps were turned off.
When removing the cause of the signal malfunction, owing to a maintenance personnel mistake the fire-fighting system gate valves in the MCP-3 oil system compartment had accidentally been opened and water ingressed to MCP-3 oil system sensing elements. The latter caused a false signal of rise in oil pressure at MCP-3 and it was turned off. The reactor unit got automatically unloaded to 67% of the level of power permitted for three MCPs when sensing elements troubles were removed MCP-3 was turned on and on April 20, 1992 at 14:10 the unit rated power was restored.
ERF rating date: 30-04-1992
ERF contact person: A.I. DEMYANENKO
ERF address: B. VERCHOVNOJ RADY 3, KIEV, UKRAINE, Ukraine
ERF affiliation: STATE COMMITTEE ON NUCLEAR AND, RADIATION SAFETY OF UKRAINE, DESHATOMNAGLIAD UKRAINE

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