(Solved):   A heat exchanger is used to heat flammable, volatile solvents, as shown in Figure 1. The t ...

 

A heat exchanger is used to heat flammable, volatile solvents, as shown in Figure 1. The temperature of the outlet stream is measured by thermocouple, and a controller valve manipulates the amount of steam to the heat exchanger to achieve the desired set point temperature. (a) Identify three (3) study nodes of the process. (6 Marks) (b) Perform a HAZOP study on the intention 'hot solvent from heat exchanger'. Use HAZOP form provided. (10 Marks) (c) Recommend two (2) possible modifications to improve the safety of the process. (2 Marks) (d) Based on the HAZOP study, identify three (3) human factors that may contribute to the possible causes. (6 Marks) (e) Suggest one (1) action to manage the human factors. (1 Mark) Study aby node Volatile solvent V1 Steam 200 Parameters. Deviations HAZOP form Control valve Condensate Figure 1: Volatile solvent heating system. Possible causes TRC Heat exchanger Possible consequences Actions