MCGUIRE: Dropped Control Rods (Ten)

McGuire updated the NRC from the 11/14/13 reactor trip caused by dropped control rods.

On November 14, 2013, at 1313 Eastern Standard Time, Unit 1 was manually tripped from 100% power due to indications of [four] dropped control rods. This manual reactor protection system actuation is reportable per 10 CFR 50.72(b)(2)(iv)(B). The cause of the dropped rods is not confirmed at this time, but may be related to maintenance in a Rod Control Power Cabinet ongoing at the time of the event.

Update: A subsequent licensee evaluation determined that there were ten dropped control rods.
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