---
title: "SWTC Large Scale Lid Manufacture and Testing Regime"
ocid: "ocds-h6vhtk-078958"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-078958"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-078958.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-078958.json"
source: "Find A Tender Service"
current_stage: "Award"
buyer: "International Nuclear Services Ltd"
published: "2026-10-16"
---

# SWTC Large Scale Lid Manufacture and Testing Regime

Buyer: International Nuclear Services Ltd  
Current stage: Award  
OCID: ocds-h6vhtk-078958

[View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-h6vhtk-078958)  
[Download OCDS JSON](https://d3tenders.com/contract/ocds-h6vhtk-078958.json)

## Summary

International Nuclear Services Limited is buying the detailed design and manufacture of a bespoke, full-scale Dummy Lid Arrangement and Test Rig for the SWTC-255 lid sealing system. The work also includes an experimental testing programme, with test data, analysis and technical reports to validate the proposed seal and support development of the SWTC-255 transport package from technology readiness level 4 to level 5. This is a specialist nuclear transport engineering and testing requirement, including non-destructive testing services (CPV 71632200). The procurement is arranged as a single lot and is marked as suitable for small and medium-sized businesses. The buyer is based in Warrington; no delivery location is stated in the procurement details.

The procurement is complete and has been awarded to Nuvia Limited. The award is recorded as pending. The award value is £299,767 excluding VAT (£359,720.40 including VAT). The contract period runs from 29 October 2026 to 3 April 2028, with the award dated 15 October 2026. The procurement used a direct award, justified as novel goods and services for testing, research, development and experimentation. The requirement was evaluated as one lot; the available details do not set out separate scoring criteria. The award covers the full-scale test rig and associated experimental testing and technical outputs. A contract signature milestone was scheduled for 29 October 2026.

This award demonstrates demand from International Nuclear Services for bespoke, full-scale nuclear transport package testing, combining engineered test equipment with experimental validation and technical reporting. A credible competitor for a future requirement of this kind would need to design and manufacture specialist rigs and lid-sealing arrangements, plan and carry out controlled experimental tests, and deliver reliable test data, analysis and reports that support progression through technology readiness levels. The single-lot award bundles design, manufacture and testing, so suppliers would need the capacity to manage an integrated engineering and testing programme rather than supply a component alone. The buyer selected a supplier through direct award on the basis of the novel research, development and experimentation requirement; businesses should therefore be able to demonstrate relevant technical expertise and the ability to address a bespoke nuclear transport engineering problem.

## Notice

The contract covers the detailed design and manufacture of a bespoke full-scale Dummy Lid Arrangement and Test Rig for the SWTC-255 lid sealing system. The supplier will undertake an experimental testing programme and provide the associated test data, analysis and technical reports to support development of the SWTC-255 transport package from TRL4 to TRL5.

### Procurement Information

This requirement concerns the design and manufacture of a bespoke full-scale test rig and the conduct of an experimental test programme for the SWTC-255 lid sealing system. The purpose of the work is to generate test data, validate the proposed sealing arrangement and support the development of the SWTC-255 transport package from TRL4 to TRL5. The requirement therefore concerns the supply of novel goods and services for the purposes of testing, research, development and experimentation.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/097869-2026 |
| Notice type | UK6 - Contract Award Notice |
| Procurement type | Standard |
| Procurement category | Services |
| Procurement method | Direct |
| Procurement method details | Direct award |
| Tender suitability | SME |
| Awardee scale | Large |
| All stages | Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 16 Oct 2026 |
| Submission deadline | Not specified |
| Future notice date | Not specified |
| Award date | 15 Oct 2026 |
| Contract period | 29 Oct 2026 - 3 Apr 2028 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | Not specified |
| Lots value | Not specified |
| Awards value | £299,767 |
| Contracts value | Not specified |

## Status

| Field | Value |
| --- | --- |
| Tender status | Complete |
| Lots status | Complete |
| Awards status | Pending |
| Contracts status | Not specified |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | International Nuclear Services Ltd |
| Locality | WARRINGTON |
| Postcode area | Warrington |
| Postcode | WA3 6GR |
| Country | England |
| ITL 1 | TLD North West (England) |
| ITL 2 | TLD6 Cheshire |
| ITL 3 | TLD61 Warrington |
| Local authority | Warrington |
| Electoral ward | Birchwood |
| Westminster constituency | Warrington North |
| Delivery location | Not specified |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 1 |
| Supplier names | Nuvia Limited |

## CPV Codes

### Divisions

- 71 - Architectural, construction, engineering and inspection services

### Codes

- 71632200 - Non-destructive testing services

## Release History

- 16 Oct 2026 at 11:51 - Award - UK6 - Contract Award Notice - https://www.find-tender.service.gov.uk/Notice/097869-2026
- 16 Oct 2026 at 11:45 - Award - UK5 - Transparency Notice - https://www.find-tender.service.gov.uk/Notice/097864-2026

## Documents

- https://www.find-tender.service.gov.uk/Notice/097869-2026
  16th October 2026 - Contract award notice on Find a Tender
- https://www.find-tender.service.gov.uk/Notice/097864-2026
  16th October 2026 - Transparency notice on Find a Tender

## Notice URLs

- https://www.legislation.gov.uk/ukpga/2023/54/contents
- https://www.nucleartransportsolutions.com

## 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-h6vhtk-078958. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-078958.json.