A heat exchanger is used to heat flammable, volatile solvents, as shown in the Figure. The temperature of the outlet stream is measured by a thermocouple, and a controller valve manipulates the amount of steam to the heat exchanger to achieve the desired set point temperature. a. Identify the study nodes of the process. b. Perform a HAZOP study on the intention: hot solvent from heat exchanger. Process parameter: flow. Guide words: No/More/Less. c. Recommend possible modifications to improve the safety of the process