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Huge challenge to decontaminate Dounreay: ‘World’s deepest nuclear clean-up’.

Dounreay: ‘World’s deepest nuclear clean-up’ to begin, The first work in a clean-up of a 1950s-built shaft at a nuclear power research complex is to begin this year. BBC News, 9 Sep 20,

The shaft plunges 65.4m (214.5ft) below ground and poses one of the biggest challenges in the demolition of Dounreay in Caithness.

Radioactive waste was disposed there from 1959 until 1977 when an explosion ended the practice.

Tackling the shaft has been described as the “world’s deepest nuclear clean-up”…….

A £7.5m contract has been awarded for the first steps in this work, due to begin in late autumn, and also to carry out similar engineering work at another site at Dounreay called the silo.

It is described as being like a swimming pool with a concrete roof and was also used for the disposing of radioactive waste.

Engineering firms Nuvia and Graham Construction have been awarded the contract for work that would eventually lead to the waste being removed.

David Hubbard, of Dounreay Site Restoration Ltd, said: “The shaft and silo contain solid waste and sludge which must be retrieved and repackaged for safe above-ground storage…..

Dounreay, near Thurso, was the UK site for the development of fast reactor research from 1955 to 1994.

The facility on the north Caithness coast is in the process of being closed down, demolished and cleaned up. https://www.bbc.com/news/uk-scotland-highlands-islands-54085592

September 10, 2020 - Posted by Christina Macpherson | decommission reactor, UK

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