# LBNF/DUNE-US Cryostat Temporary Ventilation

Canonical: https://abierto.us/opportunities/rfplbnf372089bf01

- Solicitation number: RFP-LBNF-372089-BF-01
- Notice type: Solicitation
- Status: Closed. Deadline was May 12, 2026 at 6:00 PM EDT
- Department: Department of Energy
- Contracting office: Fermilab - DOE Contractor (899034)
- NAICS: 238220 Plumbing, Heating, and Air-Conditioning Contractors
- Product or service code: 4130 Refrigeration and Air Conditioning Components
- Place of performance: Lead, South Dakota
- County: Lawrence County (FIPS 46081). https://abierto.us/counties/lawrence-county-sd-46081
- City: Lead. https://abierto.us/cities/lead-sd-4636220
- First posted: March 31, 2026
- Last posted: March 31, 2026
- SAM.gov: https://sam.gov/workspace/contract/opp/8440bc1d1f794908afa877498ef4724c/view

## Description

The general purpose of this Subcontract is the acquisition of an air handling unit constructed of shipping splits, which is required during the installation of cryostat membrane, insulation, and detector components. The system will feed conditioned air to the cryostat and circulate air using large feedthroughs in the roof of the cryostat. The air handling equipment will connect to the cryostat via non-conductive duct material to custom duct adapters as provided by FFDG.

The air handling equipment shall be electrically connected in conduit to the designated power panel, which is provided by FFDG. The scope encompasses an air handling system, specifying the total air flow into the cryostats. This includes ducting (flexible or fixed) connecting the air handling equipment to the cryostat input ports.

The vendor will procure all materials, fabricate, assemble, test, package, deliver, and install the completed product for the Long Baseline Neutrino Facility (LBNF) Deep Underground Neutrino Experiment (DUNE), Far Detector and Cryogenics (FDC) subproject, located at the 4850 level underground at the Sanford Underground Research Facility (SURF) in Lead, SD.

## Publications

- March 31, 2026: Solicitation, due May 12, 2026 at 6:00 PM EDT. Notice 8440bc1d1f794908afa877498ef4724c. https://sam.gov/workspace/contract/opp/8440bc1d1f794908afa877498ef4724c/view

## Points of contact

- Bridget Fugett, bridget@fnal.gov, 8152459847
- Jeremy Duncan, jeremyd@fnal.gov, 8653000443

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Source: SAM.gov Contract Opportunities bulk extract. Confirm deadlines on SAM.gov before responding. Cite https://abierto.us/opportunities/rfplbnf372089bf01.