Simulation of the processing plant  
  Preparation of conceptual design of the plant  
  Overall material balance  
Process Flow Diagram
  Process Equipment Design  
  Piping & Instrumentation Diagrams (P&IDs)  
  Hydraulic Calculations  
  Instrument Specifications  
  Equipment Layout  
  Specialized Activities:
        Feasibility study of the plant
        Distillation column debottlenecking & Retrofit
        Overall process plant modifications
         Heat Exchanger rating, design, retrofitting
  Detail Engineering activities like Mechanical, Piping, Civil, Instrumentation, Electrical through associated companies.