Overall maintenance inspection

An overall maintenance inspection refers to the scheduled shutdown of a nuclear power plant for the inspection, maintenance and modernisation of parts of the plant. Various tasks are carried out during an overall maintenance inspection. This includes various inspections, the replacement of fuel assemblies and the maintenance of components.

The overall maintenance inspection is an integral part of safety management and contributes to guaranteeing the licensed safety level of a plant, extending the plant's service life and optimising the overall performance of a nuclear power plant.

The overall maintenance inspection cycles vary depending on the power plant and the regulatory requirements. However, they usually take place every 12 to 24 months. The duration of an inspection depends on the scope of the work to be carried out and can range from two weeks to several months.