• Development of process concept and design basis

• Process simulation using Aspen Plus or HYSYS (steady-state and dynamic)

• Establishment of Process Flow Diagram (PFD) and Heat & Material Balance (HMB)

• Review of licensor package and verification of design consistency

• Preliminary equipment sizing (columns, vessels, pumps, exchangers, etc.)

• Utility requirement and system definition (steam, cooling water, air, nitrogen, etc.)

• PSV sizing and relief load study for various scenarios

• Preliminary flare network configuration

• Development of control philosophy and Cause & Effect diagrams

• Preparation of preliminary P&ID and Utility Distribution Diagram (UDD)

• Initial safety review and overpressure protection verification

• Preparation of design basis report and technical documentation