SATPC0042783 Tab 04 4 SOW.pdf

Statement of Work (SoW)

VACUUM-JACKETED TUBING SYSTEM

FOR HYDROGEN SERVICE

Procurement Request: Vacuum-Jacketed Tubing System

Requesting Organization: NASA Marshall Space Flight Center – Propulsion Research Development Laboratory

Technical Point of Contact:

Adam Martin Propulsion Research & Technology Branch George C. Marshall Space Flight Center

NASA MSFC ER64

Delivery Location:

NASA Marshall Space Flight Center 4631 Saturn Rd. BLDG 4631, Huntsville, AL 35812

Date: 08/27/2026

1. PURPOSE AND REQUIREMENT DESCRIPTION

The Government requires the design, fabrication, inspection, documentation, packaging, and delivery of a vacuum-jacketed tubing or piping system for gaseous hydrogen (GH2). The completed system shall satisfy the Government-furnished drawings and the minimum technical requirements identified in this specification.

This procurement is for a complete material system. Installation is excluded, as the final product will be assembled in-house and on site. The vendor shall identify any exceptions, assumptions, or deviations in its quotation.

2. GOVERNMENT-FURNISHED INFORMATION

The Government will provide the following information with the solicitation or purchase request:

- System layout or isometric drawing showing required routing and dimensions.

- Required operating pressure and design pressure.

- Required operating temperature and design temperature.

- Hydrogen service designation: GH2.

- Required end-connection types and interface dimensions.

- Delivery location and any site-specific packaging requirements.

If the Government-furnished drawing conflicts with this written specification, the contractor shall notify the Contracting Officer or designated technical representative and obtain written clarification before fabrication.

3. MINIMUM TECHNICAL REQUIREMENTS

3.1 General Configuration

- Approximate overall system length: 60 feet

- Approximate number of directional changes or elbows: 4 elbows

- Inner process-line size: ½ inch ID.

- Outer vacuum-jacket size: Contractor-designed, subject to the dimensional envelope and performance requirements established by the Government drawing.

- Number of spool pieces or field joints: As required by the approved design, shipping limitations, and installation requirements.

- End connections: ½ inch A/N fittings

Equivalent contractor designs may be proposed when they satisfy the required pressure, temperature, hydrogen compatibility, dimensional interfaces, vacuum performance, installation constraints, and applicable codes.

3.2 Pressure and Temperature Requirements

- Maximum allowable working pressure (MAWP): Not less than 2,000 psig at the specified design temperature.

- Normal operating pressure: 1,200 psig.

- Design temperature range: 80 K to 320 K.

- Process fluid: GH2

- Vacuum-jacket external-pressure design: The jacket and associated components shall be suitable for the pressure differential created by the insulating vacuum and credible operating conditions.

The contractor shall clearly state the proposed system MAWP, design temperature, proof-test pressure, and applicable design-code basis. A quotation that does not meet the required MAWP or temperature range will not be considered technically acceptable unless the Government changes the requirement in writing.

3.3 Materials

- Process tubing or piping shall be austenitic stainless steel suitable for the specified hydrogen service, pressure, and temperature.

- The vacuum jacket shall be stainless steel or another Government-approved material suitable for the environment and design conditions.

- Wetted materials, seals, weld filler materials, flexible sections, and connection components shall be compatible with the specified hydrogen service.

- Materials shall be new and traceable to applicable material certifications.

The contractor shall identify the material grades, product forms, wall thicknesses, and applicable ASTM or equivalent specifications in its proposal and final documentation.

3.4 Vacuum Insulation System

- The annular space between the inner process line and outer jacket shall be evacuated and designed to maintain the required insulating vacuum.

- The contractor shall provide multilayer insulation, getters, molecular sieve, or equivalent vacuum-insulation provisions as required by its qualified design.

- Each independently evacuated spool shall include an appropriate pump-out or vacuum seal-off connection.

- Vacuum-jacket pressure-relief provisions shall be included where required by the applicable code and contractor design.

3.5 Thermal Expansion and Structural Design

The system shall accommodate thermal contraction, expansion, installation tolerances, dead weight, pressure loads, and other applicable design loads. Bellows, flexible sections, supports, anchors, guides, or other features shall be provided when required by the contractor's engineering analysis and the approved system layout.

4. APPLICABLE CODES AND STANDARDS

The contractor shall identify and apply the codes and standards appropriate to the specified hydrogen service and system classification. Unless otherwise approved in writing, the process piping design shall comply with the Government-specified edition of the applicable code.

- ASME B31.12, Hydrogen Piping and Pipelines, when applicable to the defined service and system classification.

- ASME B31.3, Process Piping, when specified or otherwise applicable.

- Applicable ASTM material standards.

- Applicable Compressed Gas Association requirements and NASA requirements identified in the solicitation or Government-furnished documentation.

The contractor shall identify the code edition and any proposed code exceptions or alternative standards in its quotation. No exception shall apply without written Government approval.

5. DESIGN SUBMITTALS AND APPROVAL

- Government review does not relieve the contractor of responsibility for design accuracy, code compliance, workmanship, or contract performance.

6. FABRICATION, CLEANING, AND WORKMANSHIP

- Internal process surfaces shall be cleaned to a level suitable for the specified hydrogen service.

- Components shall be protected from contamination during fabrication, inspection, testing, packaging, and shipment.

- Fabricated components shall be free from defects that could affect pressure integrity, vacuum integrity, cleanliness, assembly, or operation.

- Openings shall be capped or sealed following final cleaning and testing.

7. INSPECTION AND TESTING

The contractor shall state its proposed test pressures, acceptance criteria, leak-rate acceptance criteria, vacuum-retention duration, and nondestructive-examination coverage in its proposal. Testing shall not create conditions exceeding the allowable limits of any component.

8. REQUIRED DELIVERABLES

- Welding procedure and personnel qualification records.

- Inspection and nondestructive-examination reports.

- Pressure-test and leak-test reports.

- Vacuum-retention test results.

- Operating, handling, installation, and maintenance instructions, as applicable.

9. PACKAGING AND SHIPPING

- The system shall be packaged to prevent contamination, moisture intrusion, physical damage, and loss of alignment during transportation and handling.

- Process openings shall be capped or sealed after cleaning and testing.

- Packaging shall be suitable for the selected shipment method and shall support safe unloading and handling.

- Individual spool pieces and shipping containers shall be clearly identified to correspond with the approved drawings.

- Shipping terms and freight charges shall be identified separately in the quotation.

- Quotation shall include Free

- Delivery destination:

NASA Marshall Space Flight Center

4631 Saturn Rd. BLDG 4631, Huntsville, AL 35812

10. DELIVERY SCHEDULE

The contractor shall provide the proposed drawing-submittal schedule, fabrication duration, testing schedule, and delivery date. Required delivery is [INSERT REQUIRED DATE OR NUMBER OF WEEKS AFTER AWARD]. The contractor shall identify any assumptions affecting the delivery schedule.

11. WARRANTY

The contractor shall provide its standard commercial warranty if it available for that product and identify its duration, commencement date, exclusions, and procedures for obtaining warranty service. The warranty shall address defects in materials and workmanship and leaks involving the inner process line and outer vacuum jacket.

12. QUOTATION REQUIREMENTS

The contractor's quotation shall include sufficient information for the Government to determine technical acceptability. The quotation shall clearly identify:

- Compliance with each minimum requirement.

- Proposed MAWP and design-temperature range.

- Proposed materials and dimensions.

- Applicable design code and edition.

- Proposed system configuration and connection details.

- Inspection and test methods and acceptance criteria.

- Required drawings and documentation.

- Warranty terms.

- Delivery schedule.

- Firm itemized pricing, freight, and any separately priced options.

- Exceptions, assumptions, exclusions, or deviations.

13. BASIS OF TECHNICAL ACCEPTABILITY

A product will be considered technically acceptable when the submitted information demonstrates that it satisfies all Government minimum requirements, including the required hydrogen service, MAWP, temperature range, dimensional interfaces, material compatibility, applicable codes, inspection and testing, documentation, and delivery requirements.

Brand names, proprietary connection systems, or vendor-specific construction details shall not be mandatory unless separately justified and expressly identified by the Government. Functionally equivalent designs may be accepted when they meet all minimum requirements.

15. REFERENCES USED TO PREPARE THIS DRAFT

[1] NSSC New SAT Request Checklist, Version 1.0, 2026. The checklist requires an item description or specification that accurately states the essential salient characteristics and functions necessary to meet the Government's minimum needs.

[2] Spaceline Technologies, Proposal MarshallGH201, dated July 31, 2026.

[3] Technifab Products, Inc., Quote Q17889 Rev B, dated August 18, 2026.

[4] Acme Cryogenics, Budgetary Quotation 26081702-SEG, dated August 17, 2026.

Technical User Approval

Name: ____ Adam Martin___ _________________

Title/Office: _NASA Marshall Space Flight Center ER64_______________

Date: __ August 27, 2026__________________________________ End of Item Specification