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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, 16-03-1998
ERF description: On 3 March 1998 unit 1 was in normal operation with thermal power of 2200 MW (equal to 50% of normal).
At 12.48 when the reactor control and protection system was subject to planned activity there was a spurious signal which actuated the Fast Acting Scram System (FASS) resulting in reactor trip. The spurious signal causes are currently under investigation.
Justification:
The fast reactor trip is an expected initial event. There is full availability of safety functions. This event is preliminarily classified on INES at level 0 according to Table II (A-1) INES user's manual
ERF rating date: 08-03-1998
ERF contact person: A. Glazunov
ERF address: 4761 Visaginas, Lithuania
ERF affiliation: Ignalina NPP

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