Tender: Controlled Demolition of B55 Office Complex and B55.2 Turbine Hall – Sellafield (WAGR)

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A2R JV is seeking a supplier for the controlled demolition and dismantling of the B55 Office Complex and B55.2 Turbine Hall within the WAGR complex at Sellafield, down to existing ground-floor slab level. The scope includes soft stripping, asbestos remediation, high-reach mechanical demolition of the structural frame, cladding and reinforced-concrete floors, segregation and processing of demolition arisings, backfilling of voids and final site clearance. A key constraint is Substation 65, which is located within the B55/B55.2 structure and must remain operational and be protected from demolition impacts, dust and water ingress throughout the works; retained basements and associated structures also require protection. Uncertainties associated with ageing structures, buried services, below-ground voids and incomplete historical information must be managed through robust surveys, demolition engineering and risk-informed planning, with the overall intent to provide a safe, demolition-led solution that reduces workforce exposure, removes redundant infrastructure and supports accelerated hazard reduction across the wider WAGR decommissioning programme.