Three Mile Island nuclear power plant operating again

(Londonderry Township) -- The Three Mile Island nuclear power plant is back up and running after automatically shutting down earlier this week.

A problem with a reactor coolant pump caused the plant in Londonderry Township, Dauphin County to unexpectedly go off-line on Thursday.

Crews replaced and tested new equipment before restarting the plant.

TMI Site Vice President Rick Libra says the plant "performed the necessary repairs safely and efficiently and [is] committed to a reliable operating cycle."

The plant also shut down earlier this month due to a leak found in one of the units there. The piece of equipment was fixed and is now back up and running as well.

The facility has said no radiation was released into the atmosphere when it stopped running.

The plant generates 852 megawatts of powers, which is enough to service about 800,000 homes. Electric customers were not affected by the plant being off-line.