The authority is also looking for suppliers for a modular building complex to hold workers worth up to £10m on the Shetland Islands site.
Work on the new decommissioning site will involve major dredging and civil engineering works worth up to £35m to create a new 30,000 square metre quayside complex.
The contract will last 20 months and firms have until July 6 to register their interest with Doig and Smith Limited 6 Lynedoch Place James Donnelly G3 6AQ Glasgow UNITED KINGDOM +44 1413328907 email@example.com Tel +44 1413324967.
The same contact is also handling the £10m contract to create a new modular accommodation block on the site for workers.
The job will create 2,000 square metres of modular accommodation and 2,850 square metres of warehouse space.