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 Entered dateEvent description
ENS 439728 February 2008 19:59:00While withdrawing shutdown bank rods in preparation for a North Anna Unit 2 startup, a Rod Control system Urgent Failure alarm was received in the main control room. Further investigation revealed group step counters for Shutdown Bank 'A' deviated by 3 steps from demand. TRM 3.1.3 was entered and the Reactor Trip breakers were opened within the 15 minute requirement. The licensee notified the NRC Resident Inspector.