Effective Jan 17, 2025Mass. Register #1539MGL c. 146, §§ 1 through 51; §§ 56 through 64; §§ 66 through 80Board of Boiler Rules
All Low Pressure/Heating Boilers under the scope of 522 CMR 4.02 shall be initially constructed in accordance with the 2021 ASME Boiler and Pressure Vessel Code, Section IV, Rules for Construction of Heating Boilers.