# DUNE "Warm Structure" Steel Fabrication

Canonical: https://abierto.us/opportunities/bz202514

- Solicitation number: BZ-2025-14
- Notice type: Sources sought
- Status: Closed. Deadline was October 8, 2025 at 6:00 PM EDT
- Department: Department of Energy
- Contracting office: Berkeley Natl Lab - DOE Contractor (899032)
- NAICS: 332710 Machine Shops
- Product or service code: 9999 Miscellaneous Items
- Place of performance: Batavia, Illinois
- County: Kane County (FIPS 17089). https://abierto.us/counties/kane-county-il-17089
- City: Batavia. https://abierto.us/cities/batavia-il-1704078
- First posted: August 28, 2025
- Last posted: August 28, 2025
- SAM.gov: https://sam.gov/workspace/contract/opp/5176fcd576bf447e811e1ebc31188df7/view

## Description

Lawrence Berkeley National Laboratory is conducting market research to identify sources that possess the capabilities and experience necessary to fabricate a steel “Warm Structure” to meet AISC 360 Specification for Structural Steel Buildings in support of the DUNE-ND project. A key component of DUNE-ND is a particle detector housed inside of an insulated cryogenic tank or cryostat. The cryostat is filled with liquid argon and uses a membrane construction. The exterior steel frame, referred to as the “Warm Structure,” is the subject of this Request for Information. Please see the attached RFI document and technical drawings for more details and response instructions.

## Publications

- August 28, 2025: Sources sought, due October 8, 2025 at 6:00 PM EDT. Notice 5176fcd576bf447e811e1ebc31188df7. https://sam.gov/workspace/contract/opp/5176fcd576bf447e811e1ebc31188df7/view

## Points of contact

- Brian Zatkow, bzatkow@lbl.gov, 510-495-2547

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Source: SAM.gov Contract Opportunities bulk extract. Confirm deadlines on SAM.gov before responding. Cite https://abierto.us/opportunities/bz202514.