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Tunnel Segment Production Monitoring System copy

Sizewell C Limited

This public procurement record has 1 release in its history.

Tender

17 Aug 2026 at 15:00

Tender Notice
Summary of the contracting process

Sizewell C Limited is seeking a services supplier to provide an end-to-end monitoring and traceability system for approximately 39,000 precast concrete tunnel segments. The requirement covers tracking each segment from casting at the Avonmouth tunnel precast factory through transport using road and rail interfaces, storage at four facilities, and installation by three tunnel boring machines. The system is intended to provide supply-chain visibility, improve reporting and quality traceability, resolve inventory discrepancies, prevent duplicate segments and installation errors, and support quality compliance. The segments will serve two intake tunnels and one outfall tunnel. Delivery spans London, the South West and the South East of England. The procurement is categorised as tunnelling works, although the main requirement is for services.

The procurement reached the tender stage, at which Sizewell C Limited invited suppliers to submit offers. The tender deadline set by the buyer was 21 August 2026 at 17:00 BST. The planned contract period runs from 3 March 2027 to 3 December 2034. The estimated value is between £250,000 and £500,000, in GBP. The published classification is CPV 45221247, tunnelling works. The requirement is presented as a single procurement rather than separate lots. It is not identified as suitable for small or medium-sized enterprises or voluntary, community and social enterprises. The opportunity concerns a long-term service supporting the production, logistics, storage and installation lifecycle of tunnel segments.

This opportunity suits suppliers that can design, configure and support industrial asset-tracking or supply-chain traceability systems in complex infrastructure environments. Relevant capability includes real-time or near-real-time tracking across manufacturing, road and rail logistics, multiple storage locations and installation by tunnel boring machines. Suppliers should be able to integrate operational data from production, inventory, transport, storage and installation activities, while providing reliable reporting, audit trails and quality records for multiple stakeholders. Experience in construction, tunnelling, precast concrete, major infrastructure or similarly controlled manufacturing and logistics operations would be valuable. The scale and extended delivery period favour an established provider with sufficient implementation, systems-integration, technical-support and project-management capacity for an end-to-end service.

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Notice Information

Notice Title

Tunnel Segment Production Monitoring System copy

Notice Description

This project involves the manufacturing, transportation and installation of approximately 39000 precast concrete tunnel segments. The segments will be produced at Avonmouth tunnel precast factory, transported through a multi-modal logistics network (truck and train interfaces), stored across 4 facilities (TPF, Railhead, ACA and TLC), ultimately installed within three TBMs serving two intake tunnels and one outfall tunnel configuration. This operation requires complete end-to-end visibility from the moment a segment is cast until it is installed within the tunnel structure. Currently, critical gaps exist in reporting, quality traceability, inventory discrepancies, and segment tracking across the supply chain. A comprehensive traceability system is essential to manage the entire lifecycle, prevent installation errors, ensure quality compliance, eliminate segment duplication, and maintain supply chain transparency across all stakeholders.

Notice Details

Publication & Lifecycle

Open Contracting ID
ocds-b5fd17-e86010e9-31cb-4390-97d2-24719474ed92
Publication Source
Contracts Finder
Latest Notice
https://www.contractsfinder.service.gov.uk/Notice/8487f9cc-06bc-476d-9212-9dfd09693e47
Current Stage
Tender
All Stages
Tender

Procurement Classification

Notice Type
Tender Notice
Procurement Type
Standard
Procurement Category
Services
Procurement Method
Not Specified
Procurement Method Details
Tender Suitability
Not specified
Awardee Scale
Not specified

Common Procurement Vocabulary (CPV)

CPV Divisions

45 - Construction work

CPV Codes

45221247 - Tunnelling works

Notice Value(s)

Tender Value
£500,000 £500K-£1M
Lots Value
Not specified
Awards Value
Not specified
Contracts Value
Not specified

Notice Dates

Publication Date
17 Aug 20261 weeks ago
Submission Deadline
21 Aug 2026Expired
Future Notice Date
Not specified
Award Date
Not specified
Contract Period
3 Mar 2027 - 3 Dec 2034 Over 5 years
Recurrence
Not specified

Notice Status

Tender Status
Active
Lots Status
Not Specified
Awards Status
Not Specified
Contracts Status
Not Specified

Buyer & Supplier

Contracting Authority (Buyer)

Main Buyer
Sizewell C Limited
Contact Name
Available with D3 Tenders Premium →
Contact Email
Available with D3 Tenders Premium →
Contact Phone
Available with D3 Tenders Premium →

Buyer Location

Locality
LONDON
Postcode
W1T 4EZ
Postcode Area
West London
Country
England
Major Region (ITL 1)
TLI London
Basic Region (ITL 2)
TLI3 Inner London - West
Small Region (ITL 3)
TLI36 Camden
Delivery Location
TLI London, TLJ South East (England), TLK South West (England)
Local Authority
Camden
Electoral Ward
Bloomsbury
Westminster Constituency
Holborn and St Pancras

Further Information

Notice Documents

Open Contracting Data Standard (OCDS)

View full OCDS Record for this contracting process

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The Open Contracting Data Standard (OCDS) is a framework designed to increase transparency and access to public procurement data in the public sector. It is widely used by governments and organisations worldwide to report on procurement processes and contracts.

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