LINCOLN — The Nebraska Public Power District named a new chief officer Tuesday to head Cooper Nuclear Station.

Oscar Limpias, vice president of engineering for Entergy Nuclear since 2007, will assume his new duties this week at the station near Brownville, Neb.

He replaces Brian O'Grady, who held the job since 2010. O'Grady has left to pursue other opportunities, said Mark Becker, spokesman for NPPD.

Limpias has been in charge of all engineering for Entergy's nuclear business.

The district contracted with Entergy Nuclear Nebraska, a subsidiary of Entergy Corp. of Jackson, Miss., in 2004 to provide support services for plant operation. The agreement includes employment of a limited number of management personnel at Cooper, one of which is the chief nuclear officer.

The Cooper Station began operating in 1974 and generates 800 megawatts of electricity. The plant employs about 700 people.

NPPD recently announced it will pursue a $243million project with the goal of generating 20 percent more electricity from the reactor.

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