What improper operation can lead to exposure to harmful microorganisms?

A) Cooling tower fan shut-off during cold months
B) Excessive fan speed
C) Formation of ice-fog when operating in cold climates
D) Improper /incorrect treatment of cooling water chemically


Answer: D
Explanation: A) Incorrect. Improper valve operation can lead to scalding or burns from exposure to hot process cooling water.
B) Incorrect. Improper operation of the chlorine system can lead to severe injury or death from chlorine exposure.
C) Incorrect. Formation of ice-fog when operating in cold climates can lead to injury due very slippery conditions.
D) Correct. Improper /incorrect treatment of cooling water chemically can lead to exposure to harmful microorganisms.

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