AL Pipelines Practice Questions - Alabama Pipelines Contractor Examination Exam

Before cutting or welding on a tank that has held flammable liquid, the tank must first be:

Emptied, cleaned, and rendered vapor-free or inerted, with atmosphere testing to confirm the condition Filled with water to the top of the fill pipe only Left open overnight to air out Pressurized with air to hold back vapors

Correct Answer:

Emptied, cleaned, and rendered vapor-free or inerted, with atmosphere testing to confirm the condition

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