Members of ISCT have pioneered mercury chemical decontamination of hydrocarbon process equipment (i.e,, tubing, riser platforms, well flow test equipment, production platforms and FPSOs, sub-sea pipelines, onshore gas deny plants, midstream and downstream processing systems/plants) and have developed proprietary chemistries for decontamination of personnel and equipment at hydrocarbon process plants that have metals (i.e., mercury, arsenic and selenium in inlet streams through process and partitioning to products.