3" Cryogenic Vent Stack with Changeable Terminations Tender

• Country: United Kingdom
• Summary: 3" Cryogenic Vent Stack with Changeable Terminations
• GBT Ref No: 135606945
• Deadline: 06 Mar 2026
• Financier: Self Financed
• Purchaser Ownership: Government
• Tender Value: Refer Document
• Notice Type: Tender
• Document Ref. No.: T4879
• Purchaser's Detail:
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• 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
  CPV classifications: 44160000 - Pipeline, piping, pipes, casing, tubing and related items
• Documents:

 Tender Notice