Source: https://tendernation.io/opportunities/01a13bc9-984f-7164-a801-04f052e186e8/ultrasonic-rail-frequency-detection-services-framework awarded GB restricted procedure # Ultrasonic Rail Frequency Detection Services Framework [Network Rail Infrastructure Ltd](https://tendernation.io/buyers/network-rail-infrastructure-ltd) Estimated value Not stated Published 16 Dec 2025 Deadline Rolling deadline ## Who can bid - 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. ## About this tender Ultrasonic testing is a non-destructive testing method of inspection (without destroying railway components), which utilises high-frequency ultrasonic pulses to detect internal flaws, ensuring track integrity. The Scope of Services is to provide Network Rail Southern Region (including High Speed) with trained and competent Ultrasonic Rail Detection Operators and equipment to conduct manual testing of all applicable Track Assets. ## CPV classification Railway-track inspection services Source Find a Tender (UK) · Notice ocds-h6vhtk-05f68e-2025-12-16T11:47:12Z [View official notice](https://www.find-tender.service.gov.uk/Notice/ocds-h6vhtk-05f68e-2025-12-16T11:47:12Z) 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 Ltd: past awards and live tenders](https://tendernation.io/buyers/network-rail-infrastructure-ltd) [Sector More Architecture, engineering & surveying tenders](https://tendernation.io/sectors/architecture-engineering-surveying) ## More tenders like this [Engineering design services for the construction of civil engineering works – Dokumentace pro povolení záměru stavby č. 9567 Radlická radiála JZM - Smíchov; v úseku MÚK Bucharova – MÚK Jinonice · Hlavní Město Praha · 15 days left · 3 Nov 2026](https://tendernation.io/opportunities/01a15183-0c15-72b2-bb19-c3ab1550e67e/czechia-engineering-design-services-for-the-construction-of-civil-engineering) [Infrastructure works consultancy services – Contrôle extérieur des chaussées · Collectivité européenne d Alsace · 29 days left · 17 Nov 2026](https://tendernation.io/opportunities/01a15183-1730-733b-8247-a32bbbe2211c/france-infrastructure-works-consultancy-services-controle-exterieur-des-chau) [Architectural, construction, engineering and inspection services – Single Party Framework Agreement for Architect Led Integrated Design Team Services for Fire Safety Remediation Works for Dublin City Council · Dublin City Council · 5 days left · 23 Oct 2026](https://tendernation.io/opportunities/01a15183-0a15-7156-849b-5a223dd6d615/ireland-architectural-construction-engineering-and-inspection-services-sin) [Architectural, construction, engineering and inspection services – Būvprojekta izstrāde un autoruzraudzība fasādes siltināšanai kārtās Dzirciema ielā 16, Rīgā – 1.kārta, C korpuss · Rīgas Stradiņa universitāte · 28 days left · 16 Nov 2026](https://tendernation.io/opportunities/01a15183-3915-73d1-83e6-c378f9f7a926/latvia-architectural-construction-engineering-and-inspection-services-buvp) [Technical assistance services – Suivi et gestion de chantiers de réhabilitation de sites pollués · SPAQuE · 16 days left · 3 Nov 2026](https://tendernation.io/opportunities/01a15183-155e-73c2-a593-9e17375422ac/belgium-technical-assistance-services-suivi-et-gestion-de-chantiers-de-rehab) [Engineering design services – Planung GDRMA-HR Mittelhausen, Erfurt · SWE Netz GmbH · 29 days left · 16 Nov 2026](https://tendernation.io/opportunities/01a15183-1b45-71e4-84d1-8ef96006e2cb/germany-engineering-design-services-planung-gdrma-hr-mittelhausen-erfurt)