Source: https://tendernation.io/opportunities/01a13bbc-c27a-7206-bd68-11f0cd18850a/southern-region-passive-thermal-management-solutions-for-legacy-lineside-signall closed GB restricted procedure Suitable for SMEs # Southern Region Passive Thermal Management Solutions for Legacy Lineside Signalling Equipment Housings (Location Cases) [Network Rail Infrastructure Limited](https://tendernation.io/buyers/network-rail-infrastructure-limited) Estimated value £14,000,000 Published 14 Nov 2025 Deadline Rolling deadline ## Who can bid - Buyer says suitable for SMEs The buyer ticked “suitable for SMEs” on the notice. Anyone can still bid. - Buyer says suitable for VCSEs The buyer ticked “suitable for voluntary, community and social enterprises” on the notice. - Sets up a framework Winning a place does not guarantee work: contracts are awarded later as call-offs, and the list usually stays closed for years. [More contracts for small businesses and VCSEs](https://tendernation.io/opportunities/for-small-businesses) ## About this tender Legacy lineside equipment housings (dating from the 1960s–2000s) on the GB rail network are experiencing increasing thermal stress due to hotter, longer summers and changing climate patterns. These housings were not designed for elevated ambient temperatures or prolonged thermal loads and are increasingly at risk of overheating, which may degrade the reliability or lifespan of the sensitive signalling and telecoms equipment inside. In Kent Route, there are over 5,000 and in Southern Region there are over 15,000 of these housings (also known as Location Cases), and nationally over 60,000. Network Rail is seeking passive thermal management solutions that can be retrofitted to existing housings without compromising security, structural integrity, or existing cable penetrations. Active cooling systems are not desirable due to power constraints, maintenance burden, and whole-life cost implications. ## CPV classification Cooling and ventilation equipment Source Find a Tender (UK) · Notice ocds-h6vhtk-054443-2025-11-14T13:05:59Z [View official notice](https://www.find-tender.service.gov.uk/Notice/ocds-h6vhtk-054443-2025-11-14T13:05:59Z) Never miss a tender like this again Get AI summaries, deadline alerts and a bid pipeline for tenders matched to your business. Free to start. [Track tenders free](https://tendernation.io/register) [Buyer profile Network Rail Infrastructure Limited: past awards and live tenders](https://tendernation.io/buyers/network-rail-infrastructure-limited) [Sector More Industrial machinery tenders](https://tendernation.io/sectors/industrial-machinery) ## More tenders like this [Lifting and handling equipment – Moyens de manutention motorisés · Union des Groupements d'Achats Publics · 56 days left · 15 Dec 2026](https://tendernation.io/opportunities/01a156a9-88ab-73d8-bf7c-44ba9139abc3/france-lifting-and-handling-equipment-moyens-de-manutention-motorises) [Lathes – Strung universal cu diametrul de prelucrare între Ø 320 ÷ Ø 380 mm · S Uzina Mecanica Plopeni SA · 31 days left · 20 Nov 2026](https://tendernation.io/opportunities/01a156a9-89ea-7222-a30a-79ce9a09d1c7/romania-lathes-strung-universal-cu-diametrul-de-prelucrare-intre-o-320-o-3) [Water pumps – ΠΡΟΜΗΘΕΙΑ ΑΝΤΑΛΛΑΚΤΙΚΩΝ ΓΙΑ ΤΙΣ ΥΠΗΡΕΣΙΕΣ ΕΠΙΣΚΕΥΗΣ ΤΩΝ ΥΠΟΒΡΥΧΙΩΝ ΑΝΤΛΗΤΙΚΩΝ ΣΥΓΚΡΟΤΗΜΑΤΩΝ ΥΔΡΕΥΣΗΣ · ΔΗΜΟΤΙΚΗ ΕΠΙΧΕΙΡΗΣΗ ΥΔΡΕΥΣΗΣ-ΑΠΟΧΕΥΤΕΥΣΗΣ ΗΡΑΚΛΕΙΟΥ (Δ.Ε.Υ.Α.Η.) · 34 days left · 23 Nov 2026](https://tendernation.io/opportunities/01a156a9-74e7-7383-82e1-b4c6885044d2/greece-water-pumps-promhthia-antallaktikon-gia-tis-yphresies-episkefhs-ton-y) [Miscellaneous special-purpose machinery – „Wood Vision Lab“ - das Technikum: "Absauganlage" · Wood Vision Lab GmbH · 7 days left · 27 Oct 2026](https://tendernation.io/opportunities/01a156a9-7ec8-7322-8445-8dcef4fed830/austria-miscellaneous-special-purpose-machinery-wood-vision-lab-das-tech) [Centrifuges – Centrifug och styrskåp - Hudiksvalls kommun · Hudiksvalls kommun · 2 days left · 21 Oct 2026](https://tendernation.io/opportunities/01a156a9-8986-70b3-a08f-2e4ab5fe626c/sweden-centrifuges-centrifug-och-styrskap-hudiksvalls-kommun) [Machinery and apparatus for filtering or purifying water – Systém na přípravu ultračisté vody · Vysoká škola báňská - Technická univerzita Ostrava · 34 days left · 23 Nov 2026](https://tendernation.io/opportunities/01a156a9-8de7-7383-a6dd-5533ea57df0c/czechia-machinery-and-apparatus-for-filtering-or-purifying-water-system-na-p)