6292ZN01 Attachment (1)_Heater Specifications.docx
DOCX document 44 KB Posted
- Attached to
- Portable Liquid Nitrogen Circulation Heater
- Solicitation number
- N4215827QE008
About this file
This is a Specifications document for a Portable Liquid Nitrogen Circulation Heater solicitation issued by Naval Sea Systems Command (NAVSEA), Norfolk Naval Shipyard (NNSY) in Portsmouth, Virginia. The government seeks to procure two (2) portable LN2 heaters with specific technical requirements, including 30 Standard Cubic Feet per Minute (SCFM) nitrogen flow capacity at 200 PSIG, outlet temperature range of 50°F to 70°F, power output between 8-12 W/in², and heating element capacity of 1-2 KW minimum to maximum. The heaters must feature stainless steel sheath and steel vessel construction with weatherproof aluminized steel insulation jackets, maximum dimensions of 40 inches length by 18 inches width, and mounted on portable carts with wheels and pull handles. Equipment must operate on 208V and include dual J-type thermocouples (one in outlet pipe, one welded to heating element), a digital process controller with 0-999°F range and ±0.1% set point accuracy, and a high-temperature controller with 0-1000°F range, both with adjustable dead bands.
The contractor must submit complete fabrication drawings (structural, mechanical, and electrical) with bill of materials within 30 working days of contract award, using AutoCAD 2021 edition or earlier, in both hard copy (minimum C size) and electronic formats. NNSY will review and approve or disapprove submissions within 20 working days. Final acceptance inspection will occur at NNSY, and the manufacturer must provide a Certificate of Compliance. This is a 100% Small Business Set Aside solicitation with a submission deadline of November 30, 2026 at 11:00am Eastern Standard Time. Bids should be submitted to Eliot Faircloth at john.e.faircloth2.civ@us.navy.mil. Proposals must be comprehensive in price with no additional costs permitted after award.
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Other files
| File | Type | Posted |
|---|---|---|
| 6292ZN01 Attachment (2)_Certs Required.pdf | ||
| Request for Quote Solicitation - N4215827QE008.pdf | ||
| Attachment (3)-Technical Capability Statement 27QE008.docx | DOCX document |
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CUI
Attachment (1)CUI
Document No. 6292ZN01
SPECIFICATIONS FOR PORTABLE LIQUID NITROGEN HEATER
1. GENERAL REQUIREMENTS:
1.1. Purpose: The purpose of this solicitation is to provide specifications for the fabrication of each 30 Standard Cubic Feet per Minute (SCFM) Portable Liquid Nitrogen Circulation Heater. The heaters shall be delivered complete and ready for operation.
2. TECHNICAL REQUIREMENTS:
2.1. Fabrication Criteria:
2.1.1 All material shall be provided by the contractor and detailed in the submitted construction drawings.
2.2. Equipment
2.2.1 Circulation Heater:
Must have 30 SCFM of nitrogen at 200 PSIG from -10°F to 70°F (max change temp.) Gas must leave heater between 50°F and 70°F at conditions listed above.
Heater shall provide between 8 W/in2 and 12 W/in2. Heater size shall be minimum 1 KW, maximum 2 KW.
Sheath material shall be stainless steel and vessel material shall be steel.
Heater shall have minimum 3/8”-16 x 1-1/4” deep mounting lugs (2 each, one set (2) on each end of outer jacket), maximum ¾”-10 x 1-3/4” deep lugs, holes to be on minimum 1”, maximum 2” centers.
Heater shall come with weatherproof insulation jacket mounted on it for outdoor installation.
Material of jacket shall be steel with aluminized surface and shall be welded to outer jacket of heater.
Size of heater shall be as follows:
Maximum length = 40 Inches Maximum width = 18 inches (including controls and control cover) Size of outlets shall be ½” MNPT.
Heater and controls shall operate with 208V.
The heating unit and controls shall be on a portable cart with wheels and a pull handle.
2.2.2. Controls:
Controls shall be covered with a weatherproof fiberglass enclosure with a glass front access.
Controls shall be as follows:
1) J-type Thermocouple – one in the outlet pipe (tapped into tee of outlet pipe) and one welded to the heating element.
2) Process Controller – Digital, Range 0-999o F, on/off control, selectable from front panel, set point accuracy of +/- .1% span, dead band of 2.5 oF changeable to 10oF, to be used with thermocouple tapped into tee.
3) High Temp controller – digital, range 0-1000, on/off control, selectable from front panel, set point accuracy of +/- .1% span, dead band of 2.5 oF changeable to 10 oF, to be used with thermocouple welded to heating element.
3. DELIVERABLES:
In addition to the heaters meeting the specifications of Sections 1 and 2 above, the following deliverables are to be included as part of this contract.
3.1 Drawings:
3.1.1. Within 30 working days after contract award, the successful bidder will submit a complete set of drawings (including all structural, mechanical, and electrical) and complete list of materials with material specifications to NNSY for review and approval. No material procurement or manufacture of the heating units is to commence until after the plans and associated bill of materials are approved in writing by NNSY. NNSY will review and approve or disapprove the drawings and list of material within 20 working days after receipt at NNSY.
3.1.2. All final drawings shall be composed using AutoCAD (2021 edition or earlier) in order to be compatible with current NNSY software. The contractor shall submit hard and electronic copies of these drawings. Hard copies shall be a minimum of C size (16” Wide x 21” High) with fully dimensioned layouts of skid structure, equipment, etc. All drawings shall indicate adequate clearance for operation, maintenance, and replacement of operating equipment services. Final approved assembly drawings shall be submitted to NNSY in the form of AutoCAD (2021 edition or earlier).
3.1.3. Drawings and schematics must represent the “as built” system. These drawings and schematics must be developed and printed in a manner that is conducive to ease of use and understanding while troubleshooting.
3.2. Certificate of Compliance:
3.2.1. Final acceptance inspection is to be performed at NNSY.
Manufacturer shall provide a Certificate of Compliance.
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