320 Ton Absorption Chiller Re-Tubing

The State of North Dakota’s Department of Health and Human Services seeks a qualified contractor to remove and replace all evaporator tubes (≈ 288) in a 320‑ton lithium‑bromide absorption chiller at the Life Skills & Transition Center in Grafton, ND. The work includes full disassembly, cleaning, installation of new copper or copper‑nickel tubes, nondestructive testing, leak testing, re‑assembly, commissioning, and a one‑year warranty on materials and workmanship. The contract is a firm‑fixed‑price, all‑or‑none award with a short execution window in early September 2026. • Remove existing evaporator tubes and clean tube‑sheet surfaces. • Supply and install new tubes matching OEM specifications (≈ 3/4 in. OD, copper‑nickel alloy). • Perform NDT, leak testing, and full system commissioning after re‑assembly. • Provide complete documentation, warranties, and post‑completion cleanup. • Must meet extensive insurance, indemnity, and record‑keeping requirements, and adhere to a boycott‑Israel clause.