Air Receivers

An air receiver is probably the most common type of unfired pressure vessel. However, due to minimum size inspection thresholds employed by the vast majority of jurisdictions, many of the smaller air receivers will not qualify for a mandatory inservice inspection. The typical inspection threshold sizes referenced in jurisdictional regulations are 5 cubic feet or 15 cubic feet in volume as long as the maximum allowable working pressure (MAWP) does not exceed 250 psi, or 1-½ cubic feet in volume as long as the MAWP does not exceed 600 psi. The inspector must review the jurisdiction's inspection requirements to ensure compliance with the appropriate size and pressure limitations.