AIR SEPARATION UNIT SPECIALIST ENGINEER - MECHANICAL DUNCAN AND ROSS MANAGEMENT CONSULTANCIES

Lead and execute mechanical engineering activities for ASU plants, including air compression, purification, cold box, cryogenic distillation, storage, and product distribution systems. Develop and review mechanical design deliverables such as equipment layouts, plot plans, piping layouts, stress analysis inputs, equipment datasheets, and material specifications. Prepare and check datasheets and specifications for static and rotating equipment including air compressors, expanders, cryogenic pumps, vaporizers, heat exchangers, pressure vessels, columns, tanks, and cold box internals. Ensure mechanical designs are suitable for cryogenic service, oxygen service, and low-temperature operating conditions. Review piping material specifications, line classes, insulation systems, supports, and expansion philosophies for cryogenic and ambient services. Perform or review piping stress analysis for cold box interconnecting piping, cryogenic transfer lines, and large bore process piping. Ensure compliance with ASME, API, ASTM, ISO, EN, MSS, NACE, and Middle East client standards (Saudi Aramco, ADNOC, PDO, QP, SABIC, Maaden). Participate in HAZOP, HAZID, SIL, LOPA, and QRA studies, providing mechanical discipline inputs and safeguards. Review vendor and licensor documentation from industrial gas licensors. Conduct technical bid evaluations, vendor clarifications, and technical alignment meetings. Coordinate with OEMs for compressors, expanders, cryogenic pumps, cold boxes, and packaged units. Review mechanical interfaces with electrical, instrumentation, and control systems. Support layout optimization, maintainability, accessibility, and constructability reviews. Participate in FAT, mechanical completion, pre-commissioning, commissioning, and performance testing activities. Support construction activities including inspection, site queries, and technical problem resolution. Provide troubleshooting support for equipment failures, vibration issues, leakage, thermal contraction issues, and plant reliability improvements. Support debottlenecking, revamp, and brownfield modifications in operating ASU plants. Ensure mechanical deliverables meet project schedules, quality requirements, and client milestones.