Scope
Reference
T4879
Description
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 ¼" 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 1½" 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
Total value (estimated)
- £25,000 excluding VAT
- £30,000 including VAT
Below the relevant threshold
Contract dates (estimated)
- 1 August 2026 to 1 August 2026
- 1 day
Main procurement category
Goods
CPV classifications
- 44160000 - Pipeline, piping, pipes, casing, tubing and related items
Contract locations
- UK - United Kingdom
Submission
Enquiry deadline
27 February 2026, 1:00pm
Tender submission deadline
6 March 2026, 1:00pm
Submission address and any special instructions
All tender documents are available via the HSE In-Tend supplier e-procurement portal. All responses and requests for clarification must be submitted via the portal. Registration is free of charge and can be completed via the following link:
Tenders may be submitted electronically
Yes
Award criteria
The successful supplier(s) will be selected based on
- ability to deliver the supply required
- fully meeting the specifications
- meeting the specified delivery timeline
- price.
Procedure
Procedure type
Below threshold - open competition
Contracting authority
Health and Safety Executive
- Public Procurement Organisation Number: PBXM-4389-TXVZ
Redgrave Court, Merton Road, Bootle, Merseyside
Liverpool
L20 7HS
United Kingdom
Email: tenders@hse.gov.uk
Region: UKD73 - Sefton
Organisation type: Public authority - central government