Q1- Some operators in regions where regulatory criteria don't exist construct their own F-N curves. From the below F-N curve, which company is more restrictive? Explain. (2 Mark) Figure of Q1 Q2- R-22 (Formula: CHClF2 ), with a boiling point of 40.8C and a critical temperature of 96C, has been commonly used in residential and commercial refrigeration and air conditioning systems from the 1990s, following the phase-out of chlorofluorocarbons (CFCs) in 1995. In one incident, the storage tank of R-22 raptured, and around 10 tonnes of liquid was spilled on a hot summer day of 40C. The same incident happened in the previous year but on a cold winter day of 0C. (a) Compare the fraction of the liquid that flashed to vapour in winter and summer. (3 Marks) (b) Can R-22 be liquified by pressure at room temperature? Give a reason for your answer. (1 Mark) (4 Marks) Figure of Q2 Q3- You are going to make a significant investment in one supply chain of energy in country X. Your choices are (1) Fossil energy chains including oil, LPG, Natural gas, and coal; (2) Hydro; and (3) Nuclear energy. Your primary consideration in decision-making is the safety of the energy source. (a) What would be your first choice from the insights you get from the below frequency-consequence curves for all energy chains in country X? (1 Mark) (b) Compare the safety of the LNG with LPG and discuss your answer (150-250 words) (3 Marks) Part (b) grading rubric: Discuss the difference in storage condition of LNG and LPG (1 Mark); Discuss the hazard realizations as a result of a leak from an LPG tank and from an LNG tank. (3 Marks) (4 Marks)