Which improper operation can lead to exposure to chemicals or steam?
A) Putting the exchanger online with the bleeder valve open on process side
B) Applying heat to the exchanger without following the proper warm-up procedure
C) Operating a heat exchanger with ruptured tubes
D) All of the above
Answer: D
Explanation: A) Incorrect. Putting the exchanger online with the bleeder valve open on process side, applying heat to the exchanger without following the proper warm-up procedure, and operating a heat exchanger with ruptured tubes can all lead to exposure to chemicals or steam.
B) Incorrect. Putting the exchanger online with the bleeder valve open on process side, applying heat to the exchanger without following the proper warm-up procedure, and operating a heat exchanger with ruptured tubes can all lead to exposure to chemicals or steam.
C) Incorrect. Putting the exchanger online with the bleeder valve open on process side, applying heat to the exchanger without following the proper warm-up procedure, and operating a heat exchanger with ruptured tubes can all lead to exposure to chemicals or steam.
D) Correct. Putting the exchanger online with the bleeder valve open on process side, applying heat to the exchanger without following the proper warm-up procedure, and operating a heat exchanger with ruptured tubes can all lead to exposure to chemicals or steam.
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