WP1140 - T5D Design Consultant
Reference ocds-b5fd17-abb75190-6054-4f95-b2a7-26ec9ecfbe8d · Costain Limited (H7-Heathrow)
Closed. Submission deadline: 9 June 2026. Estimated value: £5,000,000.
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Amounts and figures
Description
The T5D Rail-tunnel Ventilation Shaft is located adjacent to T5D at its North and can be accessed from the bottom (Level 6) via the trackside of the HEX tunnel or from the top (level 7) via Airside. The objective is to replace the four attenuators in the T5D Shaft because they are at their end of life. The renewal of the T5D attenuators aims to reduce the risk of debris entering fans, tunnels and station, prevent the fans from failing in any fire scenario and provide ventilation and smoke clearance for the Heathrow Rail Tunnels. This improves safety conditions within Heathrow Rail Tunnels and improves resilience of systems. In addition, less maintenance and repair are required for the attenuator. Each attenuator is formed of four quadrants weighing around 1160 kg. Review MEP systems along the airflow and advise replacement/modification to bring them up to compliance. Surveys will be carried out by others (Employed by the Client) under the direction of the Design Consultant Item Question Q1 Do you have experience with Underground rail network ventilation resilience? Requirement: Ventilation Re…
Official publications
| Medium | Reference | Date |
|---|---|---|
| FTS | 2a1ded63-c1d7-4984-9540-4dd819838020-900110 | 2 June 2026 |
| Contracts Finder | 2a1ded63-c1d7-4984-9540-4dd819838020-900110 | 2 June 2026 |
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Frequently asked questions
- What is the deadline to bid for this tender?
- The submission deadline is 9 June 2026, 21:34. Check the official source, as dates can be modified.
- What is the estimated value of this tender?
- The estimated value published by the buyer is £5,000,000.
- Who is the buyer of this tender?
- The contracting authority is Costain Limited (H7-Heathrow) (United Kingdom).
- How can I bid for public tenders in the United Kingdom?
- Bids are submitted through the official public procurement portal in the United Kingdom. El Vínculo helps you find tenders and analyse their documents; submission always happens at the official source.
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