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Maryland Nuclear Plant Shuts Down 1 Of 2 Reactors

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LUSBY, Md. -- Constellation Energy Nuclear Group says one of two nuclear reactors at its Calvert Cliffs power plant in Maryland shut down automatically after a malfunction.

Calvert Cliffs spokesman Kory Raftery says valves that feed turbines in Unit 2 unexpectedly shut down Wednesday evening, and the reactor was taken offline. He says that workers at the southern Maryland plant followed their training and that there was no public safety threat.

Raftery says the unit will remain offline while a team investigates why the valves shut down, but it's not clear when they will return to service.

This unit's last unplanned shutdown was in 2010. The other shut down in 2012 after a control rod unexpectedly dropped into the reactor core.

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

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