Sellafield is seeking contractors for a decommissioning framework worth up to £1.5bn.
The company in charge of clearing up the historic nuclear power station in Cumbria announced its intention to appoint suppliers on a 10-year agreement.
The framework will be used when Sellafield needs external help with its mammoth decommissioning activities.
Chief decommissioning officer Jack DeVine said: “Our job in decommissioning is very simple and very, very important – it is to accelerate risk and hazard reduction at Sellafield.
“Some 11,000 people work at Sellafield and I have no doubt that there is nowhere else in the world with the same concentration of nuclear experience and skills. However, we’ve committed to accelerating the clean-up of Sellafield and to do this we need external assistance to carry out specialist work that we can’t cover with our own in-house workforce.”
The procurement process is expected to conclude with the announcement of preferred bidders next summer.
A four-year decommissioning framework featuring Astrel, Cumbria Nuclear Solutions, DEV Nuclear and Nuvia is due to expire next year.
Meanwhile, NCE reported earlier this year that contractors working on Sellafield could win work on the Fukushima clean-up in Japan.