QUESTION 2

Given A continuous flow reactor incorporating a mixer impeller is employed to react two liquid feed streams A and B entering from either side of its top via flow control valves VA and VB respectively to produce a product outlet stream C leaving its bottom.  The liquid level in the reactor is monitored and controlled using a level controller, LC via the two inlet valves, VA and VB. To avoid over-pressurisation in the event of vaporisation due to an exothermic reaction, the reactor pressure is controlled using a pressure controller, PC which in turn activates a pressure relief valve PRV placed on its top to open. For the above system and labelling format, construct a fault tree diagram with the top event representing damage to the reactor due to a rise in either the reactor level or pressure.