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Pipeline Operations and Maintenance Flashcards

6 cards from real RMGA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. What is the primary purpose of cathodic protection on buried natural gas pipelines?

    Answer: To prevent corrosion of the metal pipe

    Cathodic protection prevents electrochemical corrosion by making the pipeline the cathode of an electrochemical cell.

  2. Which federal regulation governs the safety of natural gas pipelines in the United States?

    Answer: 49 CFR Part 192

    49 CFR Part 192 establishes minimum federal safety standards for the transportation of natural gas by pipeline.

  3. What does the term 'MAOP' stand for in pipeline operations?

    Answer: Maximum Allowable Operating Pressure

    MAOP, Maximum Allowable Operating Pressure, is the highest pressure at which a pipeline segment may be operated.

  4. How often must operators perform patrols on transmission pipelines in Class 1 locations under 49 CFR Part 192?

    Answer: At least once each calendar year

    For Class 1 locations, 49 CFR Part 192 requires transmission pipeline patrols at least once each calendar year.

  5. What is a 'pigging' operation in the context of natural gas pipelines?

    Answer: Running a device through the pipeline for cleaning or inspection

    Pigging involves sending a device called a pig through the pipeline interior to perform cleaning, inspection, or gauging.

  6. What type of valve is typically installed at a pipeline's mainline to allow full bore flow with minimal restriction?

    Answer: Ball valve

    Ball valves provide full bore flow with minimal pressure drop and are widely used as mainline isolation valves in gas pipelines.

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