---
title: "3\" Cryogenic Vent Stack with Changeable Terminations"
ocid: "ocds-h6vhtk-064e2b"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-064e2b"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-064e2b.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-064e2b.json"
source: "Find A Tender Service"
current_stage: "Tender"
buyer: "HEALTH AND SAFETY EXECUTIVE"
published: "2026-02-11"
---

# 3" Cryogenic Vent Stack with Changeable Terminations

Buyer: HEALTH AND SAFETY EXECUTIVE  
Current stage: Tender  
OCID: ocds-h6vhtk-064e2b

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## Summary

The Health and Safety Executive, a central government authority, is currently in the tender stage of procuring a 3" Cryogenic Vent Stack with Changeable Terminations. This procurement falls under the category of goods, specifically pipeline-related items within the industry classification CPV: 44160000. The tender is open and below the threshold, encouraging open competition. The procurement will be delivered in the United Kingdom, with key dates including an enquiry period ending on 27th February 2026, and the closure of the tender period on 6th March 2026. Potential suppliers must submit proposals via the HSE In-Tend portal, ensuring electronic submissions are permitted.

This tender presents significant opportunities for businesses involved in the manufacturing and supply of cryogenic equipment, piping, or related engineering products, aiming to expand their reach within government contracts. Companies with expertise in complying with precise technical specifications and delivering high-quality cryogenic vent components are particularly well-suited to compete. Successful bids will be evaluated based on several criteria including the ability to meet specifications, adherence to delivery timelines, and competitive pricing, providing eligible businesses a chance to enhance their portfolios through government collaboration.

## Notice

HSE require a 3" vent stack for use with cryogenic hydrogen for an experimental programme. The vent must have interchangeable terminations (miter cut, bullhorn, lambda) which may be on a flanged connection or otherwise joined. The vent stack should be 4 m tall and terminate in a 3" ANSI Class 300 flange. 0.5 m from the top there should be two bosses with 1/4" BSP female fittings and another boss with a 7/16" UNJF female fitting. The vent stack must have a maximum allowable working pressure of 40 barg. The vent stack should have a manual drain valve at the bottom of the stack which is spring loaded (normally closed). 1.5 m from the bottom of the vent stack should be a 3" ANSI flange connection and a 1 1/2" ANSI flange connection. Both these flanges must be Class 300. The vent should come with 3 interchangeable termination designs which are on 3" ANSI Class 300 flanges to attach to the top of the vent stack. Suitable gaskets and torque values/calculations for all flanges should be provided. See In-tend for full requirements

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/012525-2026 |
| Notice type | UK4 - Tender Notice |
| Procurement type | Standard |
| Procurement category | Goods |
| Procurement method | Open |
| Procurement method details | Below threshold - open competition |
| Tender suitability | Not specified |
| Awardee scale | Not specified |
| All stages | Tender |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 11 Feb 2026 |
| Submission deadline | 6 Mar 2026 |
| Future notice date | Not specified |
| Award date | Not specified |
| Contract period | 31 Jul 2026 - 1 Aug 2026 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £25,000 |
| Lots value | £25,000 |
| Awards value | Not specified |
| Contracts value | Not specified |

## Status

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

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | HEALTH AND SAFETY EXECUTIVE |
| Locality | LIVERPOOL |
| Post town | Liverpool |
| Postcode | L20 7HS |
| Country | England |
| ITL 1 | TLD North West (England) |
| ITL 2 | TLD7 Merseyside |
| ITL 3 | TLD73 Sefton |
| Local authority | Sefton |
| Electoral ward | Linacre |
| Westminster constituency | Bootle |
| Delivery location | Not specified |

## CPV Codes

### Divisions

- 44 - Construction structures and materials; auxiliary products to construction (except electric apparatus)

### Codes

- 44160000 - Pipeline, piping, pipes, casing, tubing and related items

## Release History

- 11 Feb 2026 at 15:18 - Tender - UK4 - Tender Notice - https://www.find-tender.service.gov.uk/Notice/012525-2026

## Documents

- https://www.find-tender.service.gov.uk/Notice/012525-2026
  11th February 2026 - Tender notice on Find a Tender

## Notice URLs

- https://in-tendhost.co.uk/hse
- 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-064e2b. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-064e2b.json.