WP1150 - Survey & Design - Tunnel Vent Vans & Fan Drives

Costain Limited (H7-Heathrow)

Published: Jun 2, 2026

Updated: Jun 4, 2026

Source: uk_contracts_finder

About This Opportunity

This is a services contract in the architecture and engineering sector. Located in United Kingdom, Europe, this opportunity is open to firms and consortiums, with an estimated budget of GBP 5.0 million. Proposals must be submitted before June 9, 2026.

Published through UK Contracts Finder, a national government procurement portal. Public procurement tenders follow the country's national bidding regulations and may have specific eligibility and documentation requirements for services in the architecture and engineering sector. Service contracts are typically evaluated on both technical quality and price, and may require bidders to demonstrate relevant experience and qualified personnel. Interested parties should review the full documentation on the original source before submitting their proposal.

Description

Expression of Interest Tunnel Vent, Fans and Fan Drives MEP Subcontractor Tunnel Vent, Fans and Fan Drives (Survey and RIBA 4) Scope The objective of this scope is to replace components that form part of the ventilation system at Central Terminal Area (CTA) North and South, Terminal 4 North and South and Sipson Farm, that are at their end of life. The components of concern are Fan Drives and Low Voltage Air Circuit Breakers. It is proposed that all components for the 8 No. existing Variable Speed Drives (VSD) which are close to their designed lifetime are to be replaced, together with the panel. It is proposed that all components for the 5 No. existing Direct On-Line (DOL) starters which are close to their designed lifetime are to be replaced, together with the panel are replaced with VSD's. The VSDs are to be connected to the Tunnel Control System (TCS). The incoming air circuit breakers (ACB's) and the low voltage protection devices (MCCB/MCB's) within the existing switch gear will be replaced with new devices. Where the impact is significant, this may lead to replacing the entire LV switchgear and the DOL panels for the associated equipment. New lighting will be provided by energy-efficient LED luminaires, as the existing lighting system is in poor condition. As part of small power provision, 240V socket outlet assemblies shall be provided near damper units. The existing junction boxes and cable termination boxes need to be replaced with new equipment. Item Question Q1 What capability do you have of understanding the requirements for replacing Electrical infrastructure etc., Specifically considering the constraints of an operational rail network? Q2 What capability do you have of carrying out a survey of the 5 ventilation buildings non-operational hours to provide all the information required to complete the RIBA 4 design? . CPV: Engineering design services (71320000). Suitable for SMEs. Suitable for VCSEs

Data provenance

This notice is sourced from UK Contracts Finder and was originally published on June 2, 2026. Last refreshed today. Reference: C4N113536412. BidsFactory mirrors official procurement notices and links back to the source for full legal text.

About Costain Limited (H7-Heathrow)

Costain Limited (H7-Heathrow) has issued 23 procurement notices on BidsFactory, including 3 currently open and 0 awarded contracts. Activity concentrates in Construction & Civil Works, Architecture & Engineering Services, and Water & Sanitation. All notices are published for United Kingdom. Notices are distributed via UK Contracts Finder. Most recent publication: June 2, 2026.

Frequently asked questions about this tender

Where will the contract be performed?

The contract is for delivery in United Kingdom. Foreign bidders should review local registration, taxation, and any in-country presence requirements before submitting.

How can I submit a bid?

Visit UK Contracts Finder to access the full notice, required documents, and submission instructions. Quote reference C4N113536412 when communicating with the contracting authority.

When does this tender close?

The submission deadline is June 9, 2026. You have 5 days left to prepare and submit your proposal to the contracting authority.

Who is the contracting authority?

This notice was issued by Costain Limited (H7-Heathrow) in United Kingdom. The authority is responsible for evaluating bids, awarding the contract, and managing performance.

What type of contract is this?

This is a Services contract in the Architecture & Engineering Services sector. The classification helps bidders match the opportunity to their qualifications and registered scope of supply.

What is the estimated budget?

The estimated contract value is £5,000,000 - £5,000,000. Bidders should ensure their proposals are consistent with this range and account for any local taxes and contract execution costs.