Sellafield, Britain’s most dangerous building, in the decades-long process of getting its nuclear waste cleaned up.

Britain’s most dangerous building is finally to be made safe after
engineers began removing nuclear waste from an ageing silo left over from
the arms race of the Cold War. Sellafield, at the edge of the Lake District
in Cumbria, has taken the first steps in a project described as the nuclear
industry’s equivalent of putting a man on the moon.
It has spent the past
two decades searching for a solution to the seemingly intractable problem
of cleaning up 10,000 cubic metres of radioactive sludge housed inside a
concrete silo. Known as Magnox, the silo was built in the late 1950s to
receive waste from Britain’s atomic weapons development programme, as
well as its growing fleet of nuclear reactors.
Today it holds roughly 80
per cent of all of Britain’s nuclear waste. For decades the waste has
been dissolving into a highly dangerous and potentially explosive mix
within a building no longer fit for purpose, leading to it being described
as the “most hazardous building in western Europe” – a description
Sellafield itself uses.
In 2005 a leak containing 20 metric tons of uranium
and 160kg of plutonium was discovered to have escaped from one of the
containers. The Office for Nuclear Regulation, the public watchdog, has
designated the building “an intolerable risk”.
This week, the plant
removed the first batch of waste from one of the silo’s 22 compartments
using a robotic arm specially designed for the task. The radioactive
material is then encased in cement, immobilising it to prevent any leakage,
and placed inside a metal container designed to store it permanently. The
project, which has been 20 years in the making and will take an estimated
further 20 years to complete, costs roughly £2 billion a year. Phil
Hallington, head of policy at Sellafield, described the project as the
nuclear industry’s equivalent of putting a man on the moon.
Times 16th June 2022
https://www.thetimes.co.uk/article/nuclear-waste-removal-begins-at-sellafield-power-plant-xlcmskffn
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