Small fire reported at Exelon’s Limerick nuclear plant over weekend

An “alert” was declared at the Exelon (NYSE:EXC) Limerick 2 nuclear unit as a result of a small fire at the facility in Pennsylvania on Sunday April 5, according to a report filed with the Nuclear Regulatory Commission (NRC).

The fire was extinguished by on-site personnel. No off-site fire crews were required, according to the event notification report filed with NRC on April 6.

“The fire was contained in an electrical panel that overheated,” an Exelon spokesperson said. “The site fire brigade extinguished the fire within eight minutes and there was no impact to power operations,” the spokesperson added. 

There were no injuries resulting from the fire. There was no effect on Unit 1, according to the report filed with NRC.

“An Alert was declared due to a fire in a Unit 2 Division 2 Safeguard [250 volt] DC Motor Control Center,” according to the report. “This has made the High Pressure Core Injection system inoperable and unavailable. The fire is out. The emergency response organization has been activated and investigation / repair planning will commence. Unit 2 is stable with no other system affects,” the NRC report went on to say.

The event happened at about 3:37 p.m. EDT, according to the report. Limerick 2 was operating at 82% power early April 6, according to NRC data.

Limerick Units 1 and 2 are both boiling water reactors (BWRs) located in Montgomery County, Pa. Each unit has a generating capacity in excess of 1,100 MW, according to GenerationHub data.

Following an NRC license renewal in 2014, the new licenses will expire Oct. 26, 2044, for Unit 1 and June 22, 2049, for Unit 2.

About Wayne Barber 4201 Articles
Wayne Barber, Chief Analyst for the GenerationHub, has been covering power generation, energy and natural resources issues at national publications for more than 20 years. Prior to joining PennWell he was editor of Generation Markets Week at SNL Financial for nine years. He has also worked as a business journalist at both McGraw-Hill and Financial Times Energy. Wayne also worked as a newspaper reporter for several years. During his career has visited nuclear reactors and coal mines as well as coal and natural gas power plants. Wayne can be reached at