Footage of cracks in North Ayrshire nuclear reactor released
EDF Energy says cracks in offline Hunterston B reactor growing faster than expected
Fri 8 Mar 2019
Footage has been released of cracks found inside a reactor at a nuclear plant in Scotland.
The unit at Hunterston B in North Ayrshire has not been operating after the cracks were found to be growing faster than expected.
In March last year a planned inspection of the graphite bricks that make up the core of reactor 3 uncovered new “keyway root cracks”.
EDF Energy, which owns and operates the power station, said these have now grown to an average of 2mm wide.
The firm has released footage of the cracks, which was taken in 2017 and 2018.
About 370 hairline cracks have been discovered, which means there is a fracture in roughly one in 10 bricks in the reactor core.
Under current rules, operations must stop if the number of cracks exceeds 350.
The power station is one of seven in the UK using advanced gas-cooled (AGR) reactors switched on during the 1970s and 80s; there are 14 such reactors across the seven plants, several of which have seen their lifetimes extended into the 2020s.
https://www.theguardian.com/environment/2019/mar/08/photos-cracks-north-ayrshire-hunterston-b-nuclear-reactor ☆ Hunterston B: Pictures show cracks in Ayrshire nuclear reactor - BBC News
Over 350 cracks found in Hunterston B nuclear reactor
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