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Unfinished Nuclear Plants Raise Safety Doubts via Climate News Network

A new generation of giant reactors, meant to provide fresh hope for nuclear power in Europe, has been found to have a serious safety problem.

LONDON, 13 April, 2015 − The future of the world’s biggest nuclear reactor, under construction at Flamanville in northern France, is now in doubt after a serious flaw was found in its steel pressure vessel.

Examination has shown that the steel contains too much carbon, which can weaken the vessel’s structure and breaches safety rules. The Chinese, who have two similar 1,600 megawatt European Pressurised Reactors under construction, have been warned that they too may share the potentially catastrophic problem.

Investigations are continuing to check whether the problem can be rectified, but whatever happens it will add more delays and greater costs to the already troubled projects.

The problem also casts doubt on the much-heralded nuclear renaissance in Europe, where EPR reactors are being built not only in France but also in Finland.

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It is understood that the parts of the pressure vessel found with excess carbon were manufactured in France at the Creusot Forge, in Burgundy, owned by Areva. It was this same company that made parts for the two Chinese reactors, hence the fears that they too will contain carbon above safety limits.

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One problem is the pressure vessel’s sheer size and the fact that it was already in place when the fault was detected. The vessel weighs 410 tonnes and cannot now be removed, and it is hard to see how it could be repaired or modified.

The problem was discovered in December but made public in a low-key website announcement only on 7 April.

One knock-on effect might be to seriously damage the British government’s own energy policy, which relies on building four similar reactors in England. Work has already been completed on preparatory works for two at Hinkley Point, in the west of England, using the Flamanville design.

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