Preparing Pre-feasibility study assessing the probability of detailed onePreparing feasibility study that deals with all the project dimensions that affect the project performance.Studying economic, political and legal changes affecting the project through its projected life time and its profitability.Testing the sensitivity of projected revenues to the expected changes in costs, selling prices, interest rates, fuel prices, raw material prices and exchange rates.Comparing between investing alternatives and choosing the best for implementation according to parameters of petrochemical projects.Preparing economic studies that help top management and decision makers in choosing between alternative resources.