LBNF Liquid Argon LAr Circulation Equipment

Amendment No. 1 to Solicitation No. RFP LBNF-372669-JD, issued on November 26, 2025, extends the proposal due date for the LONG-BASELINE NEUTRINO FACILITY LAR CIRCULATION project to January 5, 2026, at 5:00 P.M. CST. It also extends the deadline for technical questions to December 8, 2025. The amendment addresses several vendor questions, clarifying that the project is a design-build situation and providing a .stp file for the valve box for reference. It confirms the un-insulated piping is within the offeror's design scope and includes a P&ID to define in/out-of-scope tie points. Additionally, it clarifies that the VD and HD cryostats will be identical, each requiring three valve boxes. Offerors must acknowledge this amendment via SARC, fax, letter, or email.

Amendment 1 to RFP-LBNF-372669-JD, titled "LAr Circulation," provides instructions for accessing a large STP file that could not be hosted on SAM.gov. Due to file size limitations, the document directs users to download the STP file for "Amendment 1 STP File LAr Circulation" from a designated Fermilab OneDrive portal. This amendment is crucial for parties interested in the LAr Circulation RFP, as it provides essential supplementary materials for the solicitation.

This government file, "LAR CIRCULATION PUMPS SYSTEM VD PIPING & INSTRUMENTATION DIAGRAM," from Fermi National Accelerator Laboratory, is a detailed piping and instrumentation diagram (P&ID) outlining the design and components of a liquid argon (LAr) circulation pump system. The document, intended for reference and review, includes specifications for various valves (HV, SV, PSV, FCV, PV), pressure and temperature sensors (PT, TE, PI, PDT), flow sensors (FT), and associated cryostat-turbine pumps. It details connections for gas vent, common vent header, LAr from condenser pumps, LAr/gas to condenser pumps, and purge distribution piping. The diagram is crucial for understanding the system’s layout, control mechanisms, and safety features, indicating its relevance for federal projects involving large-scale cryogenic systems and particle physics research at institutions like Fermilab.

This document outlines the Scope of Work for the Liquid Argon (LAr) Circulation System Vertical Drift (VD) and Horizontal Drift (HD) Equipment for the Long-Baseline Neutrino Facility (LBNF)/Deep Underground Neutrino Experiment (DUNE)-US project. The project involves the detailed engineering, manufacturing, procurement, and testing of Vacuum Jacketed Pump Valve Boxes, associated piping, valves, instrumentation, and cryogenic protection equipment. The system is responsible for transferring liquid argon to and from the LAr Purification system, with each cryostat (VD and HD) requiring three pump valve boxes. The document details extensive engineering, functional, mechanical, manufacturing, and safety requirements, adhering to numerous American and International codes and standards. It also specifies detailed requirements for valves, pressure safety devices, temperature and pressure sensors, and materials, ensuring a 30-year operational lifetime and safety within the detector cavern environment. The supply also includes cryogenic equipment protection such as ladders, modular platforms, and support beams.

This document outlines the project management, quality assurance, and quality control requirements for the Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) - US LAr Circulation Packages. It details the subcontractor's responsibilities for procurement, fabrication, and installation, emphasizing adherence to international quality standards like ISO 9001 and ASME. Key aspects include a robust Quality Assurance Program (QAP), personnel qualifications, comprehensive documentation, and stringent control over manufacturing, welding, shipping, and nonconforming materials. The document also specifies design review stages (Preliminary, Final, and Production Readiness Reviews) and mandates a formal process for modifications and independent assessments to ensure project success and compliance.

The LBNF/DUNE-US LAr Circulation J-13 Project Schedule outlines administrative and procedural requirements for documenting engineering, manufacturing, and testing progress for the Long-Baseline Neutrino Facility (LBNF) / Deep Underground Neutrino Experiment (DUNE) – US project. This document, relevant to federal government RFPs and grants, details project scheduling, including administrative requirements, progress reporting, resource management, and coordination among subcontractors. It specifies the use of Critical Path Method (CPM) schedules, Primavera (P6) software, and earned value tracking to monitor progress. The scope covers eleven Argon Cryogenic Packages for cryostats VD and HD. Key aspects include detailed engineering and manufacturing phase schedules, monthly updates, reporting of unusual events, and specific qualifications for schedulers. The document emphasizes adherence to a strict schedule, with provisions for recovery schedules if progress falls behind, and mandates coordination with FermiForward for all project milestones and modifications.

This government file details the interface specifications and installation requirements for a Barber-Nichols (BNCP-76-998) pump, likely for a Liquid Argon exterior application. The document provides crucial dimensions in both inches and millimeters, outlining the pump's physical layout, including inlet and discharge diameters, and connection types like the 3/4" NPT motor junction box. It specifies installation considerations such as allowable tubing loads (50 LBF in X,Y,Z and 5 FT-LBS in X,Y,Z), recommended pipe lengths before elbows (5-10 diameters for inlet, 2-3 for discharge), and the pump's required vertical orientation. Critical warnings include not obstructing the motor's fan-cooled area and the necessity of customer-supplied pump mounting plates and seal welds. The document also includes details on weld specifications, material requirements (304/L or 316/L SS for weld-in housing), and the use of hoist rings for lifting. It is a technical drawing providing essential data for integrating the pump into a larger system, indicating the precision required for federal, state, and local RFP projects involving specialized equipment.

Amendment No. 02 to Solicitation RFP LBNF-372669-JD for the LONG-BASELINE NEUTRINO FACILITY LAR CIRCULATION extends the proposal due date to January 23, 2026, at 5:00 P.M. CST. This amendment also provides a 3D model for reference and addresses numerous vendor questions regarding technical specifications. Key updates include required LAr circulation flow rates and pressures (20 kg/s flow rate, 4.3 bar pressure differential), clarification that all piping must be 304/304LSS, and a requirement for MLI insulated piping inside the valve box with vendors determining thickness and layer count to maintain a heat leak of 1 W/m^2. Vendors are responsible for sizing relief valves per CGA S1.3, and cold testing must occur at the vendor’s facility with a leak-rate acceptance threshold of 1x10-9 mbar-l/sec. The amendment also specifies that firm prices are needed for bids, and the provided 3D model is for reference only, not for precise routing or spatial constraints. Two engineering drawing reviews (50% and 100%) are sufficient, and the PSV discharge will route to a common vent header. This amendment ensures clarity and provides crucial technical details for prospective offerors.

Amendment 2 to RFP-LBNF-372669-JD, titled "LAr Circulation," provides instructions for accessing a large STP file. Due to the file size exceeding the limitations of the SAM.gov platform, where the RFP is posted, the file must be downloaded from a dedicated Fermilab OneDrive portal. This amendment is crucial for bidders to obtain necessary technical information related to the LAr Circulation component of the project, ensuring they have all required documents for their proposals.

The document outlines load envelopes and lifting capacities for various cages and adapters used in the Ross Shaft at CERN, specifically for the LBNF/DUNE project. It details specifications for the Single Deck Ross Cage, Ross Cage or Shaft, Transport Cage, and Lifting Adapter, providing imperial and metric dimensions and weight capacities. Key information includes maximum cage payloads (13,500 lbs for Ross Cages, 19,000 lbs for Transport Cage), allowances for rigging and transport conveyance, and specific clearances for loads. The document also provides contact information for Jace Stocker, FNAL LBNF/DUNE Rigging Lead, for items exceeding specified load envelope dimensions or height. Special instructions are included for items requiring roll-in/slide-in insertion or single-point slinging, emphasizing stability and proper fit within the load envelope. This revision (Revision 5) was issued on May 6, 2025.

This document outlines the General Terms and Conditions for Supplies for the Fermi Forward Discovery Group, LLC (FFDG), operating the Fermi National Accelerator Laboratory under a DOE Prime Contract. It covers essential contractual aspects such as definitions, scope, payment, inspection, changes, indemnification, warranty, and termination. Key provisions address independent contractor status, assignment, and the importance of timely performance. The document details FFDG's rights regarding changes, modifications, and inspections, and emphasizes the subcontractor's responsibilities for licenses, permits, and safeguarding materials. It also includes comprehensive clauses on indemnification, assumption of risk, and warranties for supplies, including compliance with IPv6 for IT acquisitions and protection against suspect/counterfeit parts. Dispute resolution, applicable laws (Illinois law where federal law is absent), information release, and notification requirements are also specified. Crucially, it incorporates numerous Federal Acquisition Regulation (FAR) and Department of Energy Acquisition Regulation (DEAR) clauses by reference, with specific applicability thresholds for subcontract value, ensuring compliance with federal government flow-down provisions for supplies.

RFP LBNF-372669-JD is a request for proposals for the Long-Baseline Neutrino Facility/Deep Underground Neutrino Experiment (LBNF/DUNE) Liquid Argon Circulation Vertical Drift (VD) and Horizontal Drift (HD) systems. Fermi Forward Discovery Group LLC (FFDG) is seeking a subcontractor for the engineering, manufacturing, testing, and delivery of equipment, valves, and instrumentation for the LAr Circulation System. Key dates include November 20, 2025, for questions and December 4, 2025, for proposal submissions, both by 5:00 p.m. Central Daylight Savings Time to Jeremy Duncan at jeremyd@fnal.gov. The subcontract will be a Firm Fixed Price (FFP) agreement, with a focus on past experience, technical merit, and quality. Proposals must include separate technical and price/business volumes, addressing specific criteria such as past projects, key personnel, facilities, and a corporate quality control plan. The estimated award date is December 31, 2025.