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.

$($b$)$ Perform a HAZOP study on the intention 'hot solvent from heat exchanger'. Use HAZOP

form provided.

$($c$)$ Recommend two $(2)$ possible modifications to improve the safety of the process.

$($d$)$ Based on the HAZOP study, identify three $(3)$ human factors that may contribute to the

possible causes.

$($e$)$ Suggest one $(1)$ action to manage the human factors.

rigure $1.$ v valuc suivent neaung system.

HAZOP form