The latest cost of decommissioning at Sellafield is due to be released today.
The Nuclear Decommissioning Authority will present the figures to Parliament.
There has already been severe criticism of previous over-spends, which have put up the costs to 70 billion pounds.
More top news
Conservative John Stevenson defied his party's whip to vote in both the ayes and noes lobby over Brexit legislation.
SNP's Blackford calls on PM to tell bank boss to act on closures while Holyrood colleague accepts "commercial realities".
The huge class A substance haul is said to have been located at an address in Carlisle's Derwent Street on 18 November.