Low Ambient Pressure Chamber

The Department of the Interior Bureau of Reclamation issued a sources sought notice on May 8, 2026, for procurement, delivery, and installation of a 100 horsepower horizontal centrifugal pumping unit, motor, and Variable Frequency Drive (Galt Model G540-03050UL-03 or approved equal) for its Low Ambient Pressure Chamber facility, with removal and disposal of existing equipment; responses are due May 18, 2026, at 5:00 PM Mountain Time.

Work will be performed at the Denver Federal Center, Building 56 (Hydraulics Laboratory), with a 12-month period of performance after award. The specification requires a complete horizontal-shaft, split-case, single-stage, double-suction pumping unit rated 100 HP at 4,500 gallons per minute with 60 feet of total dynamic head, designed for 5,650 feet elevation and 104 degrees Fahrenheit ambient temperature with minimum 80-percent efficiency. The unit must be mounted on a structural steel baseplate with the induction motor, seismically restrained per ASCE 7 Chapter 13, and balanced to ISO 1940/1 Grade G6.3 or better. Field testing must demonstrate vibration levels not exceeding one-half the HI 9.6.4 acceptable limits.

Recommended pump manufacturers include Goulds, Flowserve, and Ruhrpumpen; recommended motor manufacturers include U.S. Motors, Baldor, and WEG. The contractor must provide a qualified manufacturer's erection engineer on-site during installation and testing, a safety plan, lifting and handling equipment, comprehensive documentation including installation and commissioning plans, operations and maintenance manuals, and spare parts including gaskets, seals, and packing. Security badging applies if work extends beyond five working days. Interested parties should submit capability statements not exceeding ten pages addressing company qualifications, relevant experience, timeline estimates, non-binding cost estimates, and any constraints affecting quotation development.