DCS (Distributed Control System) & Instrumentation Engineer - ABB BESIX CONSTRUCT LLC

A DCS & Instrumentation Engineer with a strong background in ABB DCS (e.g., ABB 800xA, Freelance) and SCADA systems for sewage treatment plant (STP) operations. The role involves end-to-end responsibility for process control, instrumentation asset reliability, and industrial communications, with a particular focus on maintaining the health of Profibus (DP/PA) networks. The engineer must have experience working in corrosive, H₂S-prone STP environments, ensuring safety, compliance, continuous operations, and optimized plant performance.

• DCS / SCADA & Control Systems

  • Administer, operate, and optimize ABB DCS, including control strategies, graphics, alarms, trends, historian tags, and backup/restore.

  • Maintain and enhance SCADA interfaces, dashboards, and reporting for O&M and compliance KPIs.

  • Develop, test, and implement logic modifications (loop tuning, interlocks, permissives, sequences) under strict MOC procedures.

  • Manage alarm rationalization and limit settings to reduce nuisance alarms and improve operator effectiveness.

  • Coordinate factory and site acceptance testing (FAT/SAT) for control system changes and expansions.

• Instrumentation

  • Own the lifecycle of field instruments, including selection, installation, calibration, loop checks, diagnostics, and replacement.

  • Typical devices include DO, pH/ORP, turbidity/SS, ammonium/nitrate, chlorine, flow (magnetic/ultrasonic), pressure, level (radar/ultrasonic), vibration, temperature, and gas detection instruments.

• Profibus DP/PA & Industrial Communication

  • Ensure Profibus DP/PA network reliability, including topology design, segment diagnostics, termination, shielding/earthing, redundancy, spur lengths, baud rates, device addressing, and GSD management.

  • Use diagnostic tools (e.g., bus analyzers) to identify noise, reflections, voltage drops, telegram errors, and intermittent faults.

  • Integrate field devices via Profibus PA couplers/links, gateways, and interfaces to ABB DCS/SCADA; maintain and update device libraries.

  • Collaborate with electrical and control teams on EMI mitigation, cable routing, and panel/earthing standards.

  • Support interfaces with MCCs/VFDs, PLC skids, and plant SCADA/IMS/CMMS systems.

• Safety, Compliance & Cybersecurity

  • Ensure all DCS/SIS activities comply with plant safety standards, IEC requirements, and cybersecurity policies.

  • Strengthen OT cybersecurity through access control reviews, patch management, and secure network segmentation.

  • Develop a long-term DCS roadmap covering upgrades, expansions, and software/hardware obsolescence.