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Appurtenance

Last updated: April 19, 2019

What Does Appurtenance Mean?

Appurtenance refers to all auxiliary physical components that support the function of a pipeline during its operation. Examples include drains, vents, valves and manholes. They may be located above ground or below ground and may be prone to corrosion.

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Corrosionpedia Explains Appurtenance

Appurtenances are often associated with internal corrosion due to corrosion-causing conditions on the internal lining of a given pipeline. These conditions are often contaminant or corrosive substances such as:

  • Hydrogen sulfide
  • Carbon dioxide
  • Hydrochloric acid
  • Water

Corrosion prevention mechanisms must be used to maintain a pipeline's structural integrity and its associated appurtenances to prevent critical failure. Adequate protective mechanisms such as coatings, cathodic protection (CP) and in-line pipeline inspections can be used to reduce the rate of corrosion.

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