3- Here we have some statements : choose Yes (Y) or No (N) for these statements and explain simply with a few sentences why you choose your answer You will get grades from the explanations/your comments. i- Risk assessment step in risk management system involves risk analysis. (Y/N) ii- Quantitative methods are more convenient and easy to apply for any engineering system on its conceptual design phase. (Y/N) iii- For an HAZOP study, MSDS's are the most important documents of the analysis, it provides the nesessary classifications of the process. (Y/N) iv- After 2000, ammonium nitrate explosions are only observed in developing countries such as Lebanon or Romania or Chine. Because there are severe regulations on risk assessment, process safety and HSE in developed countries. Moreover, developed countries improve their engineering ad control systems on a systematic manner. Thus they reduced their ammonium nitrate explosion risk to its minimum possible level, practically zero. (Y/N) V- With improving maintenace management systems and reliability systems, MTBF has increased and it contributes positively on equipment availability. (Y/N) vi- Fault tree analysis and Event tree analysis are two risk analysis methods, considering their qualitative nature and simplicity they are used as a starting point when a detailed risk assessment study to be conducted. (Y/N)