Stainless Metalcraft has won a Sellafield contract to enter into a second phase of supplying high integrity stainless steel storage boxes. Sellafield is a government-run nuclear site that decommissions the UK’s nuclear legacy, spent fuel storage ponds, reprocessing, waste treatment and waste storage plants. The 3m3 box contract is now worth up to £70 million and represents an approximately £20 million uplift to the original contract awarded in 2015. The boxes will be used to store intermediate level waste retrieved from silos at legacy locations in Cumbria. As part of this transition, Metalcraft will be producing approximately 1,000 boxes over phase two of the programme, which is currently expected to take six years, with revenue being recognised evenly across this period. Metalcraft has invested over five years to create a dedicated facility to supply boxes for ILW in the UK. As a result, the company says it is in a leading position to tender for future contracts at Sellafield over the duration the site decommissioning.
Product Engineering Solutions 7th June 2021 read more »
Decommissioning legacy nuclear waste silos on the former UK power generating site at Sellafield requires a large number of bins to be machined to close geometrical tolerances to ensure they can be stacked safely. They are 3m3, double-walled, box fabrications that are highly resonant and, to make their production even more difficult, they are made from 6mm thick Duplex stainless steel plate that tends to induce vibrations when it is milled. One of the firms leading the Sellafield decommissioning work, Darchem Engineering, had been taking delivery of machined bins from contract machinist BEL Engineering since 2017. The problem was, in the words of CEO Jonathan Lamb, “We wanted to increase productivity but realised that further improvements to the machining process were impossible using conventional machinery and fixturing.
Engineer Live 7th June 2021 read more »