Consider the liquid surge system shown in Figure E. A high-level alarm is used to prevent tank overflow. After a high alarm sounds, the operator has ten minutes to respond before the ESD system turns off the pumps on the inlet streams. The tank is 6 ft in diameter, 8 ft tall, and half-full at the nominal conditions. The density of the liquid is constant. The nominal values and ranges of the flow rates are shown as follows 

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Range (ft'/min) 8 – 12 4 – 6 Flow rate Nominal Value (ft'/min) q1 10 92 5 b. 15 13 -17 a) Assuming that the pumps are operating properly, determine an appropriate set-point value for the high-level alarm that is, the numerical value of liquid level h that triggers the alarm. (5 Marks) b) What additional safety features are required to handle unanticipated pump shutdowns? (5 Marks) Figure G Range (ft'/min) 8 – 12 4 – 6 Flow rate Nominal Value (ft'/min) q1 10 92 5 b. 15 13 -17 a) Assuming that the pumps are operating properly, determine an appropriate set-point value for the high-level alarm that is, the numerical value of liquid level h that triggers the alarm. (5 Marks) b) What additional safety features are required to handle unanticipated pump shutdowns? (5 Marks) Figure G