A chemical engineering consultant focuses on process design, analysis, and technical advisory services, ensuring plants and processes are safe, efficient, and compliant.

Key Responsibilities:

• Feasibility studies and process selection
• Process design and simulation (mass & energy balances, PFDs, P&IDs)
• Equipment sizing and specification (reactors, distillation columns, heat exchangers, pumps)
• Selection of raw materials, catalysts, and utilities
• Preparation of technical specifications, datasheets, and BOQs
• Safety studies (HAZID, HAZOP, risk assessment)
• Compliance with codes, standards, and environmental regulations
• Process optimization, energy efficiency, and cost reduction
• Tender evaluation and technical bid review
• Site supervision, performance testing, and commissioning support

👉 The consultant ensures the process is technically sound, safe, economical, and environmentally compliant.

A chemical engineering contractor is responsible for procurement, construction, installation, and commissioning of chemical process plants.

Key Responsibilities:

• Procurement of process equipment, materials, and chemicals
• Fabrication and erection of process equipment and piping systems
• Installation of instrumentation and control interfaces
• Coordination with civil, mechanical, and electrical teams
• Implementation of health, safety, and environmental (HSE) practices
• Quality control during fabrication and installation
• Pre-commissioning, commissioning, and start-up support
• Operator training and documentation handover
• Maintenance support and plant troubleshooting

👉 The contractor converts the process design into an operating plant.

In EPC (Engineering, Procurement & Construction) projects, one firm may act as both chemical engineering consultant and contractor, providing:

• Single-point responsibility
• Reduced project risk
• Faster execution
• Better integration of design and construction