Unnamed plant officials were quoted by The Associated Press as saying that the crews will perform additional unspecified maintenance work during the outage to ensure the reliable and efficient functioning of the unit.
The officials, however, did not disclose the time required for completion, and when the reactor will restart.
Located in Lacey Township, New Jersey, US, the single unit 636MWe boiling water reactor power plant generates enough electricity to power 600,000 homes in the state.
The plant went online on December 1, 1969, an is scheduled to shut down by the end of 2019 instead of 2029, according to the news agency.