Jōb Industrial Services completed conceptual and detailed engineering for upgrades to an older SCOT tail gas unit at a Rocky Mountain Region refiner. Scope included increasing capacity, addressing operating concerns and replacing corroded equipment. A new waste heat boiler, stripper tower, reboiler and overhead condenser were re-designed and replaced. Quench tower packing was upgraded, and the absorber had trays replaced with packing. Jōb also provided on-site construction management and start-up assistance.