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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: Mon, 05-10-1992
ERF description: Restart operations were in progress at the unit with reactor at the minimum controlled power level. While testing safety system (SS) train 2 under the load sequencing program DG-2 failed to start. While testing SS train 1 under the above program DG-1 failed to start as well. In accordance, with the procedure the reactor was brought to subcriticality. Defect in SS train 1 was corrected (speed controller maladjustment at DG-1) and DG-1 was placed in expectation (hot standby) mode. After defect elimination (failure of 6 kV breaker's electric drive) and successful testing DG-2 was placed in hot standby. Breach of unit safe operation condition occurred due to failure of two trains of emergency power supply system.
Basis for event rating:
No real initiator. Failed safety system equipment is intended for expected initiator.
Safety function availability - adequate.
According to Table A1 - Level 1/2 (C-1P). Level 1 was chosen.
ERF rating date: 07-07-1992
ERF contact person: I. Jouk
ERF address: (VNIIAES) FERGANSKAYA 25, MOSKOW 109507, Russian Federation
ERF affiliation: Ministry of the Russian Federation for, Atomic Energy, All Russian Research Inst. for Nuclear P

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