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    The nation’s oldest nuclear power plant is running once again following the replacement of a balky electrical transformer.

    The Oyster Creek Nuclear Generation Station in Lacey Township was returned to normal service yesterday afternoon after a main power transformer was replaced.

    The plant had been operating at reduced power since Dec. 12 after one of its two transformers produced abnormal readings when it was started up following a November refueling outage.

    That transformer was replaced with the station’s spare transformer this week.

    The plant produces 636 megawatts of electricity per hour, enough to power approximately 600,000 homes.

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