Costain Group PLC · Contracts Finder

Closed

Tender: Design and Supply of Tunnel Ventilation Attenuators for HS2 Headhouses and Ventilation Shafts

Released about 1 year ago

Closed29 Oct 2025

Est. valueEstimate£35K to £3.4M

LocationUnited Kingdom

AgencyCostain Group PLC

SourceContracts Finder

CategoryInfrastructure

Submissions closedClosed Wed, 29 Oct 2025

About

Costain is seeking a supplier for design and supply only of the tunnel ventilation attenuator package for Contract HRS02 on the HS2 project, covering sound attenuators within headhouses and ventilation shaft areas along the circa 180 km route. The package includes tunnel ventilation fan attenuators, acoustic panelling and testing, and requires support to Costain's design partner through concept and detailed design, noise analysis, modelling and calculations, product and arrangement testing, provision of samples and mock-ups, and commissioning support as required. Costain and HS2 are looking for innovative solutions that deliver benefits in health and safety, installation and commissioning efficiency, cost, quality and assurance efficiency, whole-life cost and carbon efficiency; all design and innovation must be accompanied by rigorous technical verification. Full scope and specifications will be provided to shortlisted suppliers, who should assess their internal capabilities against the scale of the HS2 project before expressing interest.

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