Manager Process

Larsen & Toubro; Riyadh; On-site; SAR 180,000 - 300,000; Full time

Job summary

Larsen & Toubro Limited in Riyadh seeks a desalination process engineer to lead design and optimization for seawater RO plants. You will develop mass and energy balances, PFDs and P&IDs, and coordinate with civil, electrical, instrumentation and mechanical teams.

Responsibilities include evaluating ERDs, membrane performance, FAT/SAT, and training operations on CIP and water quality control, with site travel as required.

Responsibilities

• Engineering Design & Process Development
• Develop mass and energy balances, PFDs, and P&IDs for seawater RO desalination systems.
• Design and size RO trains, pumps, pretreatment units (coagulation, media filtration, UF), and post-treatment (remineralization, CO2 dosing).
• Prepare detailed specifications for equipment: pressure vessels, membranes, dosing systems, and chemical treatment units.
• Analyze and optimize membrane performance using software
• Perform hydraulic calculations for multiport vessels and high-pressure piping networks.
• Technical Analysis & Modeling
• Conduct system simulations to predict performance under varying feedwater conditions.
• Perform recovery, energy consumption, and membrane fouling rate analysis.
• Evaluate energy recovery devices (ERDs) and design pressure exchanger systems.
• Review and analyze laboratory data, pilot trials, and membrane autopsy reports.
• Project Execution & Documentation
• Lead or review engineering deliverables: design reports, datasheets, BOQs, and technical specifications.
• Coordinate interdisciplinary interfaces with civil, electrical, instrumentation, and mechanical teams.
• Participate in HAZOP, design reviews (3D model reviews, RAM studies), and risk assessments.
• Support factory acceptance testing (FAT), site acceptance testing (SAT), and commissioning.
• Diagnose and resolve process bottlenecks, membrane fouling, scaling, or plant underperformance.
• Train operations teams on membrane cleaning procedures (CIP), energy optimization, and water quality control.

Job description

• Engineering Design & Process Development
• Develop mass and energy balances, PFDs, and P&IDs for seawater RO desalination systems.
• Design and size RO trains, pumps, pretreatment units (coagulation, media filtration, UF), and post-treatment (remineralization, CO? dosing).
• Prepare detailed specifications for equipment: pressure vessels, membranes, dosing systems, and chemical treatment units.
• Analyze and optimize membrane performance using software
• Perform hydraulic calculations for multiport vessels and high-pressure piping networks.
• Technical Analysis & Modeling
• Conduct system simulations to predict performance under varying feedwater conditions.
• Perform recovery, energy consumption, and membrane fouling rate analysis.
• Evaluate energy recovery devices (ERDs) and design pressure exchanger systems.
• Review and analyze laboratory data, pilot trials, and membrane autopsy reports.
• Project Execution & Documentation
• Lead or review engineering deliverables: design reports, datasheets, BOQs, and technical specifications.
• Coordinate interdisciplinary interfaces with civil, electrical, instrumentation, and mechanical teams.
• Participate in HAZOP, design reviews (3D model reviews, RAM studies), and risk assessments.
• Support factory acceptance testing (FAT), site acceptance testing (SAT), and commissioning.
• Diagnose and resolve process bottlenecks, membrane fouling, scaling, or plant underperformance.
• Train operations teams on membrane cleaning procedures (CIP), energy optimization, and water quality control.