Purchase of jet fans for the tunnel at the Great Belt Link

AI Summary

A/S Storebælt has awarded a contract to replace the 160 jet fans that currently line the 8 km south and north railway tunnels of the Great Belt Link. The existing fans, whose function is to evacuate smoke during a fire and provide a safe working environment, are at the end of their service life. With both tunnels at a maximum depth of 75 metres below sea level and interconnected by 31 cross‑tunnel escape routes, the replacement must be carried out with minimal alteration to the existing infrastructure. The procurement therefore requires new fans to be installed in their current positions, reusing the existing concrete brackets, while providing higher capacity ventilation.

The contract obliges the contractor to deliver a complete solution including design, manufacturing, factory acceptance testing, delivery to site, and 24‑hour on‑site supervision during tunnel closures. Supervision covers the test installation of a single fan in July 2026 and the subsequent installation and testing of the remaining 159 fans in May–June 2027. All fans must be delivered with power and control cables already connected, and must comply with applicable fire‑ventilation safety standards.

Description

BACKGROUND: The 160 jet fans in the railway tunnel on the Great Belt Link is at the end-of-life cycle and is required to be replaced. The main purposes of the jet fans are to remove smoke during a fire and ventilate for safe working environment. The tunnel is approximately 8 km long and at its deepest point the tunnel is 75 meters below sea level. The tunnel consists of two separate tunnels called the south and north tunnel with one railway track in each tunnel. The two tunnels are connected by 31 cross tunnels, which partly function as an escape route between the two tunnels and partly contain installations, such as switch-boards and transformers. THE SCOPE OF THE TENDER The scope of this tender is to provide project management, design, manufacturing, factory testing (FAT), delivery to site, supervision at site and documentation for the new jet fans. Currently there are 80 jet fans installed in each tube, totally 160 jet fans. The new jet fans shall be installed at the same location as the existing to minimize the works for power supply and fixtures to the concrete. The existing brackets, which is fixed to the concrete wall in the tunnel shall be reused for mounting the new jet fans. The new jet fans will have higher capacity than the existing jet fans, but the quantity of jet fans will remain the same 80 jet fans per tunnel, totally 160 new jet fans. The jet fans shall be delivered with connected power and control cables connected to minimize the works at site. The installation of the jet fans is done during limited closures of the railway tunnel. The installation of the jet fans is not part of the scope of this tender. It is part of this tender to provide supervision of the installation and testing of all jet fans 24 hours a day during the railway tunnel closures. The primary scope of the supervision is to approve the installation and testing done by a third party contactor and the secondary scope is to assist if there are issues with the supplied jet fans and related equipment supplied in this tender. The installation and testing at site of the jet fans are planned into two main phases. • Phase 1 – July 2026 – Test installation of one jet fan in the tunnel. • Phase 2 – May and June 2027 – Installation and testing of the rest of the jet fans. Further information and details are described in tender material.
Additional information: A/S Storebælt only received non-compliant tenders. Thus, the Contracting Entity chose to proceed with a negotiated procedure in accordance with article 50(1)(a) in directive 2014/25/EU on procurement by entities operating in the water, energy, transport and postal services sectors and repealing Directive 2004/17/EC. The contracting entity invited all tenderers to a negotation. The value stated for the tender is stated as the evaluation technical price.
Place of performance: The place of delivery of the jet fans is the above address. The supervision will take place during the installation, which is in the tunnels at the Great Belt Link.

Lot: LOT-0000
Title: Purchase of jet fans for the tunnel at the Great Belt Link


Details

Status:
Awarded
Procedure type:
Restricted Procedure
Sectors:
42522000 - Non-domestic fans
Place of origin:
Denmark
Places of performance:
Denmark
Contract duration:
30 MONTH
Contract type:
Goods
Publication date:
Dec 12, 2025
Created date:
Dec 15, 2025
Update date:
Oct 14, 2026

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