The Limerick plant near Philadelphia had four high-level and 110 low-level violations from 2000 to 2012,
The sirens went off Tuesday morning at the Peach Bottom Atomic Power Station on the Susquehanna River.
The Three Mile Island nuclear plant in central Pennsylvania will be conducting separate tests of its emergency systems.
Federal regulators began examining a nuclear plant in northeastern Pennsylvania on Monday following three unexpected shutdowns, but the facility’s operator said it is safe and stable.
Oyster Creek in Lacey Township, N.J., was already offline for regular maintenance before Sandy, a superstorm downgraded Monday night from a hurricane, slammed the East Coast.
The Nuclear Regulatory Commission says a reactor operator at a suburban Philadelphia nuclear power plant has been removed from duty after being found under the influence of alcohol.
For the second time in two months, the Three Mile Island nuclear power plant has had an automatic shutdown.
The plant experienced the malfunction, which led to a shutdown of the reactor, around 8:15 a.m. on Wednesday.
Officials say an electrical malfunction on the non-nuclear side of a suburban Philadelphia power plant has forced one of the two reactors to be shut down.
Normal operations have resumed at a southern New Jersey nuclear plant that was taken offline late last month for refueling and maintenance work.
The Salem 2 nuclear plant in southern New Jersey has been taken offline after a leak of low-level radioactive water developed during routine testing of an emergency cooling system.
One of New Jersey’s nuclear plants will be shutting down for good 10 years ahead of schedule, but not for awhile.