What improper operation can cause flashbacks?
A) Failure to wear proper protective equipment
B) Failure to follow flame safety procedure
C) Poor control of excess air and draft control
D) Opening inspection ports when the firebox has a positive pressure or pressure greater than atmospheric
Answer: B
Explanation: A) Incorrect. Failure to follow flame safety procedure can cause flashbacks.
B) Correct. Failure to follow flame safety procedure can cause flashbacks.
C) Incorrect. Failure to follow flame safety procedure can cause flashbacks.
D) Incorrect. Failure to follow flame safety procedure can cause flashbacks.
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