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Seaweed clogging up cooling system of EDF’s Hunterston B nuclear station in Scotland

Largs and Millport News 20th Oct 2017, A seaweed solution is being sought by EDF Energy to prevent cooling water being clogged up with seaweed. Hunterston B has made an application to
Marine Scotland to remove seaweed from the seabed next to the cooling water
intake jetty to help to reduce the amount of seaweed entering the cooling
water system. The consultation period on the application has ended,
responses have been received and the station is awaiting a license decision
from Marine Scotland.

Two years ago, a reactor at the nuclear power station
had to be taken offline due to high levels of seaweed in the waters around
the plant. The plant relies on water taken from the sea for cooling. Back
in 2015, in a letter to stakeholders, station director Colin Weir said:
“Hunterston B power station’s reactor 3 was manually shut down at 18.40
on Monday 1 June due to severe seaweed ingress, accompanied by strong winds
and storm surges. “This was done as a precautionary measure when it was
clear that the seaweed levels weren’t reducing. “Reactor 4 was also
reduced in power and remains operating at a reduced power.”

Mr Weir said staff at the station were monitoring the weather and seaweed levels would
begin the return to normal service when it was determined conditions were
“in a stable state”. At the time, cooling to the reactor was maintained
at all times and there were no health, safety or environmental impacts.


October 23, 2017 - Posted by | safety, UK

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