Fine Radial Collimator

The Department of Energy, through Oak Ridge National Laboratory, is soliciting proposals for the fabrication, inspection, packaging, and shipping of a complete Fine Radial Collimator assembly for the Spallation Neutron Source. This precision scientific instrument consists of a two-piece curved detector assembly with angular coverage of 93.6 degrees and 78 degrees, weighing 295 pounds total and featuring neutron-absorbing blades with isotopically-enriched boron carbide powder. The procurement will be awarded using a best value tradeoff approach where technical merit outweighs cost considerations, with evaluation criteria focusing on Manufacturing/Fabrication Plan and Schedule, Company Experience/Past Performance (requiring successful completion of one similar project within the last 36 months), and Quality Assurance Program. Proposals are due August 18, 2025, with the RFP closing date of August 20, 2025 at 3:00 p.m. EST, and all proposals must remain valid for 120 days.

This procurement operates under NAICS code 332710 (Machine Shops) with no small business set-aside designation, making it a full and open competition. The contract is anticipated as a fixed-price arrangement with Net 30 payment terms upon final acceptance, to be paid via electronic funds transfer. The collimator assembly must meet stringent technical specifications including an inner radius of 16.5 inches, outer radius of 25.5 inches, active length of 29.0 inches, and compatibility with vacuum levels of 1e-7 Torr and magnetic flux density of 600 Gauss. The contractor must also provide 24 additional replacement blades and comprehensive quality assurance documentation. Performance will occur with delivery to Oak Ridge, Tennessee, where final acceptance testing will be conducted after installation at ORNL's facility.