COVERT TOWNSHIP — The U.S. Nuclear Regulatory Commission has started a special Inspection to review the circumstances around a reactor shutdown on Sunday at the Palisades Nuclear Plant.

A news release from the NRC said workers were performing maintenance activities on an electrical panel when a small metal piece located inside the breaker panel came into contact with another metal piece and caused an arc.

"This resulted in a series of electrical issues that caused the plant to shut down and sent signals to multiple plant systems causing certain safety pumps to start and some safety valves to reposition," according to the news release.