Oregon Administrative Rules
Chapter 918 - DEPARTMENT OF CONSUMER AND BUSINESS SERVICES, BUILDING CODES DIVISION
Division 225 - BOILERS AND PRESSURE VESSELS
Section 918-225-0320 - Refrigerant or Air Conditioning Pressure Vessels

(1) Refrigerant or air conditioning pressure vessels containing three cubic feet, or less, volume of non-corrosive gases are exempt from ORS 480.510 to 480.665 if the pressure vessel is manufactured in accordance with the Boiler and Pressure Vessel Code, (ASME Section VIII, Division I), and registered with the National Board of Boiler and Pressure Vessel Inspectors as required by OAR 918-225-0450(1).

(2) The installation and operation of these vessels are covered by the Oregon Mechanical Specialty Code or mechanical aspect of the One and Two Family Dwelling Specialty Code.