A major milestone has taken place on the UK’s largest current nuclear project with the topping out of the Evaporator D building, at Sellafield, on the northwest coast of England.
A Costain-Sellafield Ltd alliance will later this year complete the basic structure of the building, which is designed to reduce the volume of highly radioactive liquid waste at the Cumbria site.
It is a project which, for obvious reasons, requires the highest possible standards of build quality. Just designing and developing the initial construction safety case for the £397million project took a year; work on the foundations began in May 2009 and the project is not scheduled to be fully complete until summer 2014.
When in service, it will be used to reduce the quantities of Highly Active Liquor, a product of reprocessing of spent nuclear fuel. The liquor is reduced in quantity by a factor of 20 by evaporation, to reduce the volume of highly active waste that will be vitrified in glass and stored on site.
The liquor will be evaporated inside a highly complex process plant designed by Costain Energy & Process in the Manchester office. The Evaporator D process plant will add additional capacity to the current evaporators...
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