Stichting Laka

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, 19-11-1991
ERF description: The unit was shut down by operating personnel due to breach of normal operation condition, namely, the time of safety system (SS) train 3 DG being removed from service in excess of that specified by procedure. DG-3 tripping occurred during routine test of SS train 3 components immediately after connection to the bus. The cause of DG-3 trip is breaker defect. During replacement of the DG's faulty breaker the subsitute breaker designed for transformer switchings was erroneously installed. The closure of this breaker resulted in the damage to DG-3 exciter.
BASIS FOR RATING: Event - postulated, expected (failure of one SS train while routine testing). Safety funciton availability - adequate. According to Table A1 - level 1/2 (C-1P). Level 2 has been chosen since the event revals safety culture deficiencies.
DIFFICULTIES IN RATING:
ERF rating date: 18-11-1991
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.
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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