A fire which caused a nuclear power station in Kent to be shut down on Monday is being investigated by engineers.
The blaze broke out in a boiler annexe on Monday night, leading to the active reactor at Dungeness B being taken off-line.
Operator British Energy said the public were never at risk, and no radioactive material was released as a result of the fire.
Experts are on site trying to find out what happened.
A British Energy spokeswoman said: “They are looking at the cause of the fire and will be bringing the reactor back online as soon as possible.”
All 52 staff on site were accounted for after the fire and there were no casualties.
Earlier this month, Gordon Brown refused to rule out Dungeness as a site for a new power plant, despite plans being rejected over environmental concerns.
The government dismissed Dungeness as a location for one of 10 new nuclear power stations, but the Prime Minster said it was just an initial decision and Dungeness could well play a role in the county’s future nuclear plans.