AL Pipelines Practice Questions - Alabama Pipelines Contractor Examination Exam

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What is the purpose of a pressure relief or thermal relief valve on a section of liquid pipeline that can be blocked in at both ends?

To relieve pressure that builds as trapped liquid warms and expands To speed up flow through the segment To prevent the line from freezing To odorize the product for leak detection

Correct Answer:

To relieve pressure that builds as trapped liquid warms and expands

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