---
title: "Tunnel Segment Production Monitoring System"
ocid: "ocds-b5fd17-237252c3-1022-40b9-903c-50d898896667"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-b5fd17-237252c3-1022-40b9-903c-50d898896667"
markdown_url: "https://d3tenders.com/contract/ocds-b5fd17-237252c3-1022-40b9-903c-50d898896667.md"
json_url: "https://d3tenders.com/contract/ocds-b5fd17-237252c3-1022-40b9-903c-50d898896667.json"
source: "Contracts Finder"
current_stage: "Tender"
buyer: "SIZEWELL C LIMITED"
published: "2026-08-06"
---

# Tunnel Segment Production Monitoring System

Buyer: SIZEWELL C LIMITED  
Current stage: Tender  
OCID: ocds-b5fd17-237252c3-1022-40b9-903c-50d898896667

[View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-b5fd17-237252c3-1022-40b9-903c-50d898896667)  
[Download OCDS JSON](https://d3tenders.com/contract/ocds-b5fd17-237252c3-1022-40b9-903c-50d898896667.json)

## Summary

The public procurement process initiated by Sizewell C Limited focuses on a project titled "Tunnel Segment Production Monitoring System." The procurement falls under the industry category of Tunnelling Works, with a primary location in regions including London, the South West, and South East of the United Kingdom. As part of the tender stage, this project requires complete lifecycle management of approximately 39,000 precast concrete tunnel segments. The tender was published on 6th August 2026, with submissions due by 14th August 2026. The planned contract period spans from 3rd March 2027 to 3rd December 2034. This procurement is significant, with a total value of £500,000, highlighting its scale and importance to the infrastructure developments in the regions mentioned.

This tender offers substantial opportunities for businesses involved in manufacturing, logistics, and installation services related to tunnelling applications. Companies with expertise in creating comprehensive traceability systems are well-suited to address the project's current gaps in reporting, quality traceability, and inventory management. Firms with a robust logistical network capable of multi-modal transport and high standards of quality compliance would find this project especially appealing. While the tender is not explicitly targeting SMEs or VCSEs, larger organisations with significant resources in tunnelling and supply chain transparency can certainly leverage this opportunity for business growth.

## Notice

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.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Contracts Finder |
| Latest notice | https://www.contractsfinder.service.gov.uk/Notice/2375427c-6174-48ea-9bb1-6dca14761f9f |
| Notice type | Tender Notice |
| Procurement type | Standard |
| Procurement category | Services |
| Procurement method | Not Specified |
| Procurement method details | Not specified |
| Tender suitability | Not specified |
| Awardee scale | Not specified |
| All stages | Tender |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 6 Aug 2026 |
| Submission deadline | 14 Aug 2026 |
| Future notice date | Not specified |
| Award date | Not specified |
| Contract period | 3 Mar 2027 - 3 Dec 2034 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £500,000 |
| Lots value | Not specified |
| Awards value | Not specified |
| Contracts value | Not specified |

## Status

| Field | Value |
| --- | --- |
| Tender status | Active |
| Lots status | Not specified |
| Awards status | Not specified |
| Contracts status | Not specified |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | SIZEWELL C LIMITED |
| Locality | LONDON |
| Post town | West London |
| Postcode | W1T 4EZ |
| Country | England |
| ITL 1 | TLI London |
| ITL 2 | TLI3 Inner London - West |
| ITL 3 | TLI36 Camden |
| Local authority | Camden |
| Electoral ward | Bloomsbury |
| Westminster constituency | Holborn and St Pancras |
| Delivery location | TLI London, TLJ South East (England), TLK South West (England) |

## CPV Codes

### Divisions

- 45 - Construction work

### Codes

- 45221247 - Tunnelling works

## Release History

- 6 Aug 2026 at 12:50 - Tender - Tender Notice - https://www.contractsfinder.service.gov.uk/Notice/2375427c-6174-48ea-9bb1-6dca14761f9f

## Documents

- https://www.contractsfinder.service.gov.uk/Notice/2375427c-6174-48ea-9bb1-6dca14761f9f
  6th August 2026 - Opportunity notice on Contracts Finder
- https://www.competefor.co.uk/business/viewOpportunityDetailsSupplier.html?id=117106796
  Please follow this link to view the notice.

## Provenance

This Markdown file is an alternate public rendering of the D3 Tenders contract record. The canonical page is https://d3tenders.com/contract/?ocid=ocds-b5fd17-237252c3-1022-40b9-903c-50d898896667. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-b5fd17-237252c3-1022-40b9-903c-50d898896667.json.