1. Mass balance
2. Heat Balance
3. Fluid Properties
4. Heat Exchanger & Pich Technology
5. Fired Heater
6. Flash Calculation
7. Coloum
8. Separator & Vessel
9. Tankage
10. Flaring System
11. Reactor & Catalyst System
12. Pumps
13. Compressors
14. Fluid Dynamic
15. Utility
16. Energy Conservation
17. Process Modelling
18. Capital Investment
19. Process Control
20. Health, Safety & Environmnet