Which of the following can cause off-spec products to be produced?
A) Improper valve operation
B) Improper operation of the chlorine system
C) Improper /incorrect treatment of cooling water chemically
D) All of the above
Answer: D
Explanation: A) Incorrect. Improper valve operation, improper operation of the chlorine system, and improper /incorrect treatment of cooling water chemically can cause off-spec products to be produced.
B) Incorrect. Improper valve operation, improper operation of the chlorine system, and improper /incorrect treatment of cooling water chemically can cause off-spec products to be produced.
C) Incorrect. Improper valve operation, improper operation of the chlorine system, and improper /incorrect treatment of cooling water chemically can cause off-spec products to be produced.
D) Correct. Improper valve operation, improper operation of the chlorine system, and improper /incorrect treatment of cooling water chemically can cause off-spec products to be produced.
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