On a simple shell and tube heat exchanger a process technician would turn the device into a bomb if he closed which of the following valves first.
A) tube inlet valve #1- process fluid 125 F
B) tube outlet valve #2- process fluid 325 F
C) shell inlet valve #3- steam
D) shell outlet valve #4- steam

Question

Quizplus · Accepted Answer

Closing the tube outlet valve #2 first would trap the high-temperature process fluid inside the tubes, causing pressure to build up and potentially leading to a dangerous situation.

On a Simple Shell and Tube Heat Exchanger a Process