Powering down at nuclear power plant
Kent's nuclear power plant, Dungeness B, is closing down one of it's reactors for 12 weeks to carry out a 30-million pound maintenance program.
It will involve 12-thousand pieces of work which are not possible when the reactor is working.
Cameras are used for remote access.
Around 500 extra staff are on the EDF site to help carry out specialist checks, and replace and upgrade materials.