محمد Rishan

Bahri Floating Barges SWRO Desalination Project - Yanbu, Saudi Arabia
Commissioned 2022 | Operational from 2024
Owner: Bahri | End User: SWA | Desalination Operator: Aqualia
Project Summary:
Part of the world’s largest floating SWRO desalination facility, this project includes three mobile barges, each producing 50, 000 m³/day of desalinated water (totaling 150, 000 m³/day). Owned by Bahri, the desalination operations are now managed by Aqualia, while Bahri oversees power generation and infrastructure systems. These barges supply critical potable water to the western regions of Saudi Arabia, aligning with national water security and sustainability goals.

Key Responsibilities & Contributions:
• Working as the Instrument & Control Engineer responsible for comprehensive maintenance, calibration, and troubleshooting of all process instruments and control systems on the desalination barges.
• Developed and implemented the Annual Maintenance Plan, covering instruments, PLCs, SCADA systems, analyzers, and control cabinets — ensuring proactive scheduling of preventive and corrective tasks.
• Created and executed Monthly Preventive Maintenance (PM) Checklists for:
• Flow, pressure, and level transmitters
• pH, ORP, chlorine, and turbidity analyzers
• Ultrafiltration and RO system sensors
• Chemical dosing skids and monitoring systems
• Authored and maintained Standard Operating Procedures (SOPs) for:
• Instrument calibration and configuration
• Fault diagnostics and corrective actions
• Shutdown/start-up control logic handling
• SCADA and PLC backup and restore operations
• Prepared detailed Corrective Maintenance Reports (CMRs) following instrument or control system failures — documenting fault diagnosis, part replacement, resolution timelines, and recommendations for long-term reliability.
• Performed instrument calibrations using HART communicators and portable simulators, maintaining full compliance with internal and ISO standards.
• Handled Preventive Maintenance (PM) for SCADA & PLC systems, including:
• I/O module testing and signal verification
• Control panel health monitoring
• Backup file management for PLC programs
• Alarm system audits and historian performance reviews
• Assisted during commissioning and early operations phases with loop checks, interlock validation, alarm testing, and tuning of PID loops.
• Maintained and updated all documentation: instrument index, calibration records, loop drawings (ISA 5.1 standard), control narratives, and tag management systems.
• Interfaced with Aqualia’s O&M team and Bahri’s power division, ensuring smooth coordination between process and utility systems.
• Participated in internal technical audits, KPI reporting, and implementation of system improvements based on operational feedback and failure trends.

🔧 Tools & Technologies:

HART Communicators · Multivariable Calibrators · SCADA (Schneider / Siemens / Rockwell) · PLC (Allen-Bradley / Siemens S7) · ISA Standards · Fiber Optic Networks · Field Instrumentation · UPS Systems · Desalination Sensors · CMR Reporting · SOP Preparation · Maintenance Planning · Control Panel Diagnostics · Historian & Alarm Management · Root Cause Analysis (RCA).

• Provide strategic development of Instrument related working procedures and processes.
• Executed Pre-SAT and SAT activities to validate instrument and control systems, ensuring compliance with design specifications.
• Conducted through loop checks, identified discrepancies, and rectified control loop issues to optimize system performance.
• Collaborated with cross-functional teams, including design, electrical, and process engineers, to successfully commission systems on time and within budget.
• Developed and implemented comprehensive commissioning plans, overseeing project timelines and budgets.
• Diagnosed and resolved complex instrument and control system issues to maintain operational efficiency.
• Established preventive maintenance programs to extend the life cycle of instrumentation equipment.
• Providing clearance Post-FAT punch point given by customer and providing the system error free to Site Acceptance Test (SAT) and commissioning
• Inter-action with client, company management and other disciplines to develop the control, safety and monitoring systems and instrumentation philosophies per the above criteria.
• Prepared technical documentation for operation, troubleshooting and maintenance of industrial systems for PLC and Human Machine Interface.
• Commissioning and supervising the installation of Controller and field instruments.
• Verify and review all necessary technical information, installation records, as built drawings etc. before initiating the commissioning activity.
• Troubleshooting the Control module and troubleshooting on the equipment under maintenance and/or installation in the Field.
• Tune feedback control loops.
• Preparation of Technical proposals, Work instructions, technical presentations, I/O list, ILD And Calibration certificates.
• To review Scope of Work (SOW) and generate Compliance statement and Technical Queries (TQ).
• Automation: PLC (Siemens S7-400 / 300 series, S7-1200, S7- 1500 & Allen Bardley- Compact Logix L33ER).
• Initiate local procurement if any to meet Automation, calibration, maintenance, repairs, services and Installation activities to meet customer expectations.
• Conducting Pre-FAT, FAT staging activities of the panel and console
• Delegating tasks to technicians and interns
• Creating complex loops, safety interlocks and advanced operating graphics in PLC SCADA

DCS Engineer - Instrument and Control
• Conducting Pre-FAT, FAT staging activities of the panel and console
• Checking system configuration, System and aux console functionality and troubleshooting the I/O wiring for both DCS and
SIS
• Delegating tasks to technicians and interns
• Providing clearance Post-FAT punch point given by customer and providing the system error free to Site Acceptance Test
(SAT) and commissioning
• Creating complex loops, safety interlocks and advanced operating graphics in Yokogawa’s Centum-VP DCS

• Troubleshoot and repair pneumatic, electronic and smart
instruments.
• Calibrate pneumatic, electronic and digital instruments.
• Overhaul control valves and other instruments
• Read and understand P&ID, Loop, Logic and Electrical drawings
• Follow ISO procedural requirements for calibration and record keeping. • Tune feedback control loops.
• Follow plant preventive maintenance procedures.
• Function test safety critical instrument systems following provided written procedures
• Understand maintenance and calibration requirements for instrument systems such as compressor controls, vibration monitoring, interlock systems, emergency shutdown systems, fire and gas detection systems. • Train Subordinates & co-workers. Report on work progress & maintenance activities.
• Installation, testing, calibration and commissioning of various Temperature, Flow, Level & Pressure measuring instruments & Control valves along with all its accessories using various test equipment’s.