Plans to switch energy generation to nuclear are partly being delayed by extended evaluations of how vulnerable different reactor designs are to terror attacks.
Two designs are currently being considered for construction in the UK, but sensitive information is still needed from French and US security forces in relation to airborne terror attacks, while health and safety issues also need a resolution, reports the Telegraph.
The general design assessment is due to be completed within the next two years in order to have the first new nuclear reactor operational by 2017.
According to the paper, a report from the Health and Safety Executive commented on the reactor design proposed by US-based company Westinghouse: "We are having some difficulty in arriving at an agreed way forward on our expectations for demonstrating the integrity of the highest reliability components, such as the reactor pressure vessels."
French-owned energy supplier EDF is to lead nuclear redevelopment in the UK due to its extensive sector experience in Europe.
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