LOUISA, VA. (AP) - Dominion Virginia Power is replacing a faulty electronic circuit card that caused a reactor to shut down at its North Anna power station.
Unit 2 at the Louisa County plant tripped automatically shortly before 2 a.m. Wednesday.
Dominion Virginia Power spokesman Rick Zuercher tells The Richmond Times-Dispatch that the circuit card failed, causing four valves to close. The valves control the flow of steam in the turbine system.
The unit sensed a problem and shut down automatically.
Zuercher says the reactor is expected to be back on line soon.
The shutdown came less than a week after the reactor was restarted following replacement of coolant pump seals.
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