---
title: "Supervision of Helium Leakage"
ocid: "ocds-h6vhtk-05d1b4"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-05d1b4"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-05d1b4.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-05d1b4.json"
source: "Find A Tender Service"
current_stage: "Award"
buyer: "SELLAFIELD LIMITED"
published: "2025-10-22"
---

# Supervision of Helium Leakage

Buyer: SELLAFIELD LIMITED  
Current stage: Award  
OCID: ocds-h6vhtk-05d1b4

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[Download OCDS JSON](https://d3tenders.com/contract/ocds-h6vhtk-05d1b4.json)

## Summary

Sellafield Limited, a sub-central government authority based in Warrington, UK, has completed a procurement process titled "Supervision of Helium Leakage" within the services category. The process involved leak tightness testing for transportation and storage flasks, adhering to the ISO 9712:2012 standard. The procurement stage reached completion with the awarding of the contract to Orano Nuclear packages and services, a large-scale supplier from France, signed on 22nd October 2025. This contract, valued at £76,410 (exclusive of VAT), is set to commence on 27th October 2025 and conclude on 31st March 2026. The direct procurement process was conducted below the threshold without competition.

This tender presents a promising opportunity for businesses within the gas industry, especially those specialising in professional services related to helium leak detection and containment. Companies with expertise in adhering to strict ISO standards would find this project aligns well with their capabilities and offers a potential for growth through high-stakes projects. Large-scale enterprises that can provide comprehensive solutions in line with specific technical requirements will be well-suited to compete in similar future opportunities. Additionally, the involvement with a prominent organisation such as Sellafield Limited could enhance market presence and credibility for participating suppliers.

## Notice

Leak tightness testing to meet LT L2 standard ISO 9712:2012 on 7 Castor HAW 28 M transport / storage flasks to specification

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/067524-2025 |
| Notice type | UK7 - Contract Details Notice |
| Procurement type | Standard |
| Procurement category | Services |
| Procurement method | Direct |
| Procurement method details | Below threshold - without competition |
| Tender suitability | Not specified |
| Awardee scale | Large |
| All stages | Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 22 Oct 2025 |
| Submission deadline | Not specified |
| Future notice date | Not specified |
| Award date | 21 Oct 2025 |
| Contract period | 27 Oct 2025 - 31 Mar 2026 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | Not specified |
| Lots value | Not specified |
| Awards value | Not specified |
| Contracts value | £76,410 |

## Status

| Field | Value |
| --- | --- |
| Tender status | Complete |
| Lots status | Complete |
| Awards status | Active |
| Contracts status | Active |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | SELLAFIELD LIMITED |
| Locality | WARRINGTON |
| Post town | 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 | ORANO NUCLEAR PACKAGES AND SERVICES |

## CPV Codes

### Divisions

- 76 - Services related to the oil and gas industry

### Codes

- 76100000 - Professional services for the gas industry

## Release History

- 22 Oct 2025 at 13:29 - Award - UK7 - Contract Details Notice - https://www.find-tender.service.gov.uk/Notice/067524-2025

## Documents

- https://www.find-tender.service.gov.uk/Notice/067524-2025
  22nd October 2025 - Contract details notice on Find a Tender

## Notice URLs

- https://www.gov.uk/government/organisations/sellafield-ltd
- https://www.legislation.gov.uk/ukpga/2023/54/contents

## 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-05d1b4. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-05d1b4.json.