Air heat-exchanger

Statement of Work (SOW) / Performance Work Statement (PWS)

This document provides the requirements for the procurement of one heat exchanger to serve as a Joules-Thompson heater for the 5000 psi Air Reducing Station at the Steam Plant, B1215.

• Heat Exchanger Design: Must be designed to heat air (5000 psig design, 4250 psig maximum operation, 2800 psig minimum operation) using 125 psig saturated steam. It must comply with ASME Section VIII Division 1, applicable ASTM and MSS SP standards, and TEMA standards.

• Materials: Shall be fabricated with new materials conforming to the Buy American Act. Specific materials are detailed for body, stationary head, cover, flanges, tube sheet, and tubes.

• Connections: Includes specific requirements for tube side (hub connectors) and shell side (Class 300, raised-face, weldneck flanges).

• Performance: Heat exchanger must heat air in the tube side using 125 psig steam on the shell side, meeting performance requirements detailed in Appendix A.

• Construction: Must be shell and tube type, TEMA Type AEU or BEU, with stationary heads and a removable U-tube bundle. It must be certified with a permanent ASME and National Board stamp.

• Pressure & Temperature: Design/Test Pressure of 635 psig (Shell Side) and 5000 psig (Tube Side). Design Temperature of 400°F (-20°F MDMT) for both sides.

• Performance Data: Detailed performance requirements are specified in Appendix A, including fluid properties, temperatures, pressures, and heat exchanged.

• Testing: Hydrostatic testing with clean potable water is required, with zero leakage allowance. Cleaning of interior and exterior surfaces is also mandated.

• Manufacturing Location: NASA Langley Research Center, Hampton, Virginia.

• Delivery Location: NASA Langley Research Center, Hampton, Virginia.

• Submittals: Vendor must submit proposal information, completed datasheets, drawings, sketches, and a statement of compliance. Shop drawings are required upon award, followed by detailed drawings.

• Quality Assurance: Vendor and Original Equipment Manufacturer are responsible for meeting all purchase and specification requirements. Procedures and welders must be qualified.

• Delivery, Storage, and Handling: Equipment must be protected from weather, humidity, and contaminants. It shall be boxed and crated for shipping, with lift points clearly marked. Openings must be covered.

• Spare Parts: One set of spare gaskets of each size is required.

• Coating/Paint System: Exterior coating requires a primer and final paint system suitable for 400°F, with specific surface preparation and thickness requirements.

• Documentation: Extensive documentation is required upon completion, including "as-built" datasheets, "CERTIFIED AS-BUILT" drawings, mill test reports, bills of materials, NDE reports, and hydrostatic test records.

Solicitation / RFP / RFQ

This is a Request for Quotation (RFQ) for an Air heat-exchanger. The solicitation is issued by NASA Shared Services Center.

• The specific requirements for the air heat-exchanger are detailed in the Statement of Work (SOW) / Bid Schedule (Section 1).

• Offerors must comply with various FAR and NFS clauses, including those related to:

  • System for Award Management (SAM.gov registration required)
  • Duty-Free Entry
  • Place of Manufacture
  • Personal Identity Verification of Contractor Personnel
  • Sustainable Products and Services
  • Government Property
  • Export Licenses
  • Ombudsman
  • Firm Fixed Priced contract type

• The contract will be a Firm Fixed Priced type. The total firm-fixed-price is TBD.

• Delivery is FOB Destination.

• Quote Due Date: June 2, 2026, by 4:00 p.m. CT.

• Submission Method: Quotes must be submitted in writing (email) to Lindsey McLellan at lindsey.m.mclellan@nasa.gov.

• Quote Validity: Quotes shall remain valid for 30 days unless otherwise stated.

• Contact for Questions: All contractual and technical questions must be submitted in writing (email) to Lindsey McLellan at lindsey.m.mclellan@nasa.gov no later than May 29, 2026, by 4:00 p.m. CT. Telephone questions will not be accepted.

• Evaluation Criteria: The Government will award the contract to the responsible Offeror whose offer is the lowest price technically acceptable (LPTA). Offers not deemed technically acceptable will be removed from consideration.

• This procurement is set aside for small business.

• Offerors must be registered at www.sam.gov.

• The solicitation is divided into five sections: Statement of Work/Bid Schedule, Instructions to Offerors, Solicitation Provisions/Representations and Certifications, Clauses/Terms and Conditions, and Quote Evaluation Criteria.

• Offerors are cautioned that solicitation provisions incorporated by reference may require completion and submission.