Two nuclear reactors at EDF Energy’s Hartlepool site have been shut down following concerns about its sister site in Lancashire.
One of the two reactors at EDF’s Heysham 1 nuclear power station, Reactor 1, has been shut since June when a defect was found in a ‘boiler spine.’
The discovery was originally made during a period of planned statutory outage in 2013, before closer inspection this year.
EDF called the closure of Heysham 1 Reactor 2 and Hartlepool Reactors 1 and 2 a “conservative decision.”
Ongoing inspections are now taking place to satisfy the company and the Regulator that the reactors can be safely returned to service.
A statement from EDF read: “Until the results of the further inspections are known it is not possible to advise exact return to service dates for these four reactors, however, an initial estimate is that these investigations will take around eight weeks.
“EDF Energy’s other nuclear power stations are not affected by this issue as they are of a different design.”
The closures will cause a reduction in the output of the plants for around eight weeks.