HD Coldboxes Fabrication

Fermi National Accelerator Laboratory, through Fermi Forward Discovery Group (FFDG), is soliciting firm-fixed price proposals for the fabrication of two Stainless Steel 304 (SS 304) Coldbox Structures, with an option for a third unit. These coldboxes are critical components for the Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) project and will be used to house and cold-test Anode Plane Assembly (APA) units before installation in an underground neutrino detector. Vendors must meet detailed technical specifications including precise dimensional tolerances per ASME Y14.5-2018, welding requirements following AWS D1.1/D1.6 specifications, and comprehensive quality control measures including dimensional inspections, non-destructive testing, fit-up tests, and load bearing beam tests. The award will be made using a best value source selection method, with the intent to award to the lowest-priced technically acceptable offeror without discussions. The proposal deadline is 5:00 PM Central Time on January 6, 2026, and all proposals exceeding $10,000 must include completed SARC and PUR-466 forms.

This procurement carries no set-aside designation and represents work under Prime Contract No. DE AC02 07CH11359 with the U.S. Department of Energy. The base scope consists of two coldbox units with a potential third unit as an alternate additive scope, each standing 14 meters tall and fabricated from stainless steel. Vendors must provide delivery within six months of contract signature on a firm-fixed price basis, with all freight charges included in their quotation and delivery to Fermilab Receiving Warehouse 2 in Batavia, Illinois on an F.O.B. Fermilab basis. The specification documents include detailed engineering drawings and technical requirements across multiple attachment files, and offerors are permitted to propose alternative connection details provided they adhere to overall product and design requirements. Interested contractors should direct questions to Spencer Keske, Procurement Specialist II, at skeske@fnal.gov or 630-840-3323.