(Solved): Safety Instrumented System or also known as Safety Interlock System (SIS) is designed to provide au ...

Safety Instrumented System or also known as Safety Interlock System (SIS) is designed to provide automatic response after alarms indicate potentially hazardous situations. Figure 1 shows a gas storage tank equipped with a SIS system. a) List two (2) general objectives of the SIS system. [4 marks] b) Explain the operation of SIS system designed for the gas storage tank in Figure 1. [6 marks] c) An engineer proposed a design of Basic Process Control System (BPCS) on the same loop of the SIS system loop in Figure 1. Evaluate whether the BPCS design is feasible and state three (2) reasons to support your evaluation. [5 marks] Page 1 of 3