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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, 04-03-1993
ERF description: Trip of the inverter no. 2 caused by the blown fuse resulted in the loss of power to the instrumentation bus II which supplies control power to the circuit of the auxiliary contatct on the reactor coolant pump no. 2 breaker, which serves as the input signal to the reactor trip logic. Loss of the control power generated "RCP no. 2 Breaker Trip" signal which in coincidence with P-7 interlock (above 10% reactor power) caused reactor trip.
The fuse was replaced and the inverter successfully tested. Plant was prepared for startup. All the safety functions were fully available.
Basis for rating:
Real initiator, expected (reactor trip) - level 0.
ERF rating date: 08-03-1993
ERF contact person: Mr. M.F. Levstek
ERF address: Vojkova 59, 1113 LJUBLJANA, Slovenia
ERF affiliation: Slovenian Nuclear Safety Administration

This map shows a selection of reports from nuclear and radiological incidents stored in the IAEA NEWS-database.
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