LACEY TOWNSHIP, N.J. (AP) – The operator of the nation’s oldest nuclear power plant has manually shut down its reactor after equipment failed on one of its two transformers.

Officials at the Oyster Creek Nuclear Generating Station in New Jersey say Saturday night’s shutdown occurred without incident. But they won’t say how long it’s expected to last or when repairs will be completed at the facility in Lacey Township, about 60 miles east of Philadelphia and 75 miles south of New York City.

Plant spokesman David Benson says the shutdown caused no risk to the public and no radiation was released.

Oyster Creek opened in December 1969 and just received a new 20-year operating license. It generates enough electricity to power 600,000 homes a year.

Anti-nuclear and environmental groups say the plant is unsafe.

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