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Overarching design

Letters

The article on the closure for Chernobyl by Jon Young (NCE 27 April) states that the sliding arch was conceived in 2004.

However, in 1992 an almost identical sliding arch was submitted in the international competition organized by the Government of Ukraine.

The partners in the submission were AEA and Design Group Partnership (DGP) the latter providing the structural support to the bid. The result of the competition was France first with Germany and the UK joint second.

Subsequently in 1994 the three governments decided to pool resources and develop a European proposal. DGP was replaced by Taywood Engineering in this consortium and the previous submissions were studied to decide which was the best solution. Because the sliding arch minimises the radiation doses for the builders it was selected.

This consortium improved the shape of the arch to give vertical reactions, and importantly proposed that the external end wall be built first to act as a shield for those building the arch. A full description of their work is described in Civil Engineering Proceedings February 1997.

If any accolades (or even fi nancial recompense) are due they belong to DGP.

David Haslewood, David. haslewood@eu. earthtech. com

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