Talen Energy (NYSE:TLN) operators reconnected Unit 2 at the Susquehanna nuclear power plant in Pennsylvania to the regional power grid on May 17, the company said.
The Unit 2 reactor was manually shut down on Friday, May 13 due to a fault in one of the unit’s 480-volt electrical distribution centers. The plant’s design provides redundancy to account for the potential of these types of electrical faults.
An investigation by the plant’s nuclear professionals determined the reason for the shutdown was a short in a breaker that supplies power to a ventilation fan. “Our electrical engineers and craftsmen completed a comprehensive assessment and identified an isolated electrical short, said Jon Franke, site vice president.
“We have replaced the breaker and verified the functionality of the system,” Franke added in a news release.
Susquehanna 1 continued to run at 100% power while the other unit was down. Both Susquehanna units are boiling water reactors (BWRs) commissioned in the 1980s. Each can generate roughly 1,200 MW.
The Susquehanna plant, located about seven miles north of Berwick, is jointly owned by Susquehanna Nuclear, LLC, and Allegheny Electric Cooperative Inc., and is operated by Susquehanna Nuclear.
To keep its nuclear options open, Talen has been proceeding with a combined construction and operating license (COL) application at the Nuclear Regulatory Commission (NRC). The application seeks approval for a potential nuclear facility, Bell Bend, which would be located adjacent to the existing Susquehanna site.