Tender: Anaerobic Digester Inspection, Repair and Refurbishment Works across Thames Water Operational Estate

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Thames Water Utilities Limited is seeking suppliers for a single‑lot, multi‑supplier framework to deliver inspection, repair, refurbishment and upgrade works to anaerobic digester assets and associated infrastructure across its operational estate. The framework covers decommissioning, isolation and preparation of digesters, removal and regulated disposal of sludge and waste, internal and external inspection with reporting and defect recommendations, cleaning and enabling works, structural repairs to roofs, walls and bases, repair/replacement/upgrade of mechanical, electrical, control and instrumentation (MECI/MEICA) systems, upgrades to meet regulatory, environmental and operational standards (including emissions control and gas management), temporary works and access, testing and commissioning, and provision of as‑built documentation, O&M manuals and training; works will be delivered as discrete call‑off packages across multiple sites, the scope and value of individual contracts will vary and may be refined after initial inspections, and the estimated aggregate value of framework call‑offs is £70,000,000 (indicative only). Suppliers must demonstrate capability in delivering complex, safety‑critical works within live operational environments and to meet regulatory and programme objectives.