Karthikraja Muthumanickam

Senior Supervisor with 14 years of experience in Water Treatment and Desalination Plant Operation & Maintenance. Strong expertise in Electrical and Instrumentation maintenance, RO desalination systems, SCADA monitoring, troubleshooting, and preventive maintenance. Proven ability to maintain plant reliability, ensure safety compliance, and support continuous plant operations.

Senior Supervisor (Control & Instrumentation) - Asia Project Engineering Pte Ltd

(2020-09)

• Perform troubleshooting, calibration, and maintenance of instrumentation systems used in water treatment and desalination processes to ensure reliable plant operation.
• Carry out calibration and configuration of field instruments using HART Communicator, including parameter verification and diagnostics.
• Maintain and service field instruments including flow transmitters (FIT), pressure transmitters (PIT), differential pressure transmitters (DPIT), and temperature instruments (TIT).
• Perform loop checking, 4–20 mA signal testing, and commissioning activities for newly installed and existing instrumentation systems.
• Diagnose and rectify instrument faults such as signal fluctuation, drift, communication failure, and inaccurate readings.
• Maintain and troubleshoot control valves, valve positioners, butterfly valves, and motor operated valves (MOV) including stroke testing and functional verification.
• Perform preventive maintenance and calibration of online analyzers such as pH, chlorine, conductivity, turbidity, and ORP analyzers.
• Conduct functional testing and performance checks to ensure all instruments meet operational and safety requirements.
• Prepare and maintain calibration reports, maintenance records, and technical documentation in compliance with plant standards.
• Support operations team by quick troubleshooting and rectification of instrumentation issues to minimize plant downtime.
• Ensure all maintenance activities are carried out in accordance with WSH safety procedures and environmental regulations.

Senior Technical Specialist –Operation and Electrical & Instrumentation - Hyflux / Hydrochem(S) Pte Ltd

(2011-12 - 2020-09)

• Operated large-scale seawater desalination plant systems, including pretreatment, RO, and post-treatment processes.
• Managed and operated pretreatment units such as DAFF, sand filtration systems, and strainers to maintain feed water quality.
• Operated membrane systems including Ultrafiltration (UF), Microfiltration (MF), and Reverse Osmosis (RO) to achieve production targets.
• Performed RO membrane CIP cleaning, including chemical preparation, circulation, and monitoring of membrane recovery performance.
• Conducted water quality testing and laboratory analysis including pH, Free Chlorine, Total Chlorine, ORP, Turbidity, TOC, Ammonia, Alkalinity, Hardness, and Conductivity.
• Performed chemical dosing adjustments and drop tests to optimize plant process performance and chemical consumption.
• Monitored plant operation using SCADA system and trend analysis to identify and rectify process deviations.
• Performed instrument calibration using HART communicator for transmitters and field instruments.
• Conducted loop checking, signal verification, and troubleshooting during plant maintenance and shutdown works.
• Maintained instrumentation devices including flow meters, pressure transmitters, DP transmitters, and analyzers.
• Carried out maintenance of electrical equipment such as motors, transformers, rectifiers, UPS systems, and circuit breakers.
• Supported installation and modification of motor control circuits using SLD and schematic diagrams.
• Assisted in preventive maintenance planning and execution to minimize breakdowns and improve plant reliability.
• Provided guidance and training to junior technicians on plant operation, safety procedures, and maintenance practices.

Diploma - Electrical and Electronics Engineering - Capital College of the Arts, Singapore (2021)

ITI - Electrical Technician - Mahavishnu ITI, Tamil Nadu, India (2010)

Certificate - Secondary School Certificate - GOVT H.S. School, Tamil Nadu, India (2009)