A water leak was found in a turbine at a non-nuclear part of the facility, a spokesman was quoted as saying by the BBC.
The plant was closed as a precaution. However, the spokesman did not confirm when the plant would resume operations.
In August 2014, the plant was closed after a regular inspect found a fault.
The reactor at the plant was also closed in 2013 following emission of smoke from the facility.
EDF operates eight nuclear plants across the UK.