522 CMR, § 17.02
All piping systems covered by 522 CMR 17.00 shall be constructed using the following standards:
For Power Piping : ASME B31.1-2014 Power Piping, the American National Standard Code for Power Piping. This is piping typically found in electric power generating stations, industrial and institutional plants, geothermal heating systems, and central and district heating and cooling systems.
For Process Piping : ASME B31.3-2014 Process Piping, the American National Standard Code for Process Piping. This piping is typically found in petroleum refineries, chemical, pharmaceutical, textile, paper, semiconductor, and cryogenic plants, and related processing plants and terminals.
For Refrigeration Piping and Heat Transfer Components : ASME B31.5-2013 Refrigeration Piping and Heat Transfer Components, the American National Standard Code for Refrigeration Piping and Heat Transfer Components. This piping is typically used for piping refrigerants and secondary coolants.
For Building Services Piping : ASME B31.9-2014 Building Service Piping, the American National Standard Code for Building Service Piping. This piping is typically found in industrial, institutional, commercial, and public buildings, and in multi-unit residences, which does not require the range of sizes, pressures, and temperatures covered in ASME B31.1-2014 Power Piping.
522 CMR, § 17.02