The alert at PPL’s Susquehanna nuclear power plant in Luzerne County, Pa., ended at 4:33 a.m. EST Thursday (3/2).

The plant continues to operate normally. There was no release of radiation and an investigation continues to find the cause of the incident.

The alert was declared after a fire protection system activated in a building located in a non-nuclear area of the plant.

The plant’s fire brigade responded to the building after the system activated and found no fire. There were no injuries. PPL is investigating why the fire protection system activated, releasing halon gas.
 
"The plant remained safe and secure throughout the incident," said Miriam Mylin, public information manager for PPL Susquehanna. "A security officer in the building at the time was able to leave safely and no other plant employees were affected."

The alert was declared at 9:27 p.m. Wednesday (3/1). An alert is the second lowest of four emergency classifications for U.S. nuclear power plants established by the Nuclear Regulatory Commission.

PPL notified Luzerne and Columbia county emergency management agencies, as well as the Pennsylvania Emergency Management Agency. The company also has notified the Nuclear Regulatory Commission.

The Susquehanna plant, located about seven miles north of Berwick, is owned jointly by PPL Susquehanna LLC and Allegheny Electric Cooperative Inc. and is operated by PPL Susquehanna.

PPL Susquehanna LLC is a member of the PPL Corporation (NYSE: PPL) family of companies. Headquartered in Allentown, Pa., PPL Corporation controls about 11,500 megawatts of generating capacity in the United States, sells energy in key U.S. markets and delivers electricity to customers in Pennsylvania, the United Kingdom and Latin America.