TWO BRITISH NUCLEAR POWER STATIONS CLOSED TEMPORARILY

The French company EDF has temporarily shut down two of its nuclear power station in England, due to an unexpected crack in a boiler at Heysham 1 nuclear reactor, according to the Office for Nuclear Regulation (ONR).
http://www.bbc.co.uk/news/business-28738074

Both nuclear reactors at Heysham have been shut down, also the two reactors at Hartlepool nuclear power station.

The company stated that the shut downs would last around eight weeks to allow further inspections. 

The National Grid has said that the shut downs would have no effect on the UK's supply of electricity.

The ONR is seeking positive confirmation of the condition of the boilers, and said that there has been no release of radioactive material and no persons have been injured.

Comment:  'Unexpected cracks' is worrying. We are assured that nuclear risks are all understood and accounted for at nuclear power stations - 'unexpected' is not part of the lexicon. It was the 'unexpected' that did it for Fukushima, and Chernobyl.