Nuclear submarine to get new core after test reactor problem

Low levels of radioactivity have been discovered in the cooling waters of a nuclear submarine test reactor at Dounreay, Defence Secretary Philip Hammond has said.

Mr Hammond told MPs that no leak had occurred and said there were no safety implications for staff working on the site, or risks to the environment.

But, as a result, HMS Vanguard is to be refuelled with a new nuclear core at a cost of £120m.

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