130' Crude Slop Tank
At a Western Canadian refinery, RJ Maclean was asked to circulate, process and clean a 130’ Crude Slop Tank for inspection. The client estimated 2-3’ of H2S laden sludge in the bottom of the tank. Using multiple SandPiper packages, and a client supplied light end hydrocarbon diluent, the tank was circulated to create a pumpable slurry for draw down from the tank. With the reduction of disposal volumes being a significant client focus, RJ Maclean employed a two-phase Centrifuge to separate the residual crude oil and hydrocarbon diluent from the solids, fines, and sediment. The Centrifuge processing continued during the Robotic Manway Cannon washing phase to re-circulate and re-use the wash water volume require for cleaning. The results were significant; an estimated 80% reduction in waste disposal volumes and a 60% reduction in water usage.