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1 of 2 Calvert Cliffs nuclear reactors shut down

Tuesday - 8/14/2012, 2:43pm  ET

LUSBY, Md. - Constellation Energy Nuclear Group says it has shut down one of two reactors at its Calvert Cliffs plant in southern Maryland after a malfunction caused a drop in power generation.

A spokesman said Monday that a control rod unexpectedly dropped into the reactor core. Control rods are used to regulate the pace of the nuclear reaction.

A Nuclear Regulatory Commission spokesman says such events are infrequent but do not pose a risk to the public. He says shutting down the unit for inspections and maintenance was a prudent decision.

Plant spokesman Kory Raftery says he can't predict when Unit 1 will return to operation. He says Unit 2 is running at full power.

The plant is located along the Chesapeake Bay near Lusby, about 70 miles south of Baltimore.


(Copyright 2012 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)