INSPECTION OF BOILERS, AIR TANKS, ETC. LICENSES OF ENGINEERS, FIREMEN, AND OPERATORS OF HOISTING MACHINERY
Necessity for license
Section 84. No person shall engage in the business of a master pipefitter, or work as a journeyman or apprentice pipefitter or work as a refrigeration technician or work as a fire protection sprinkler system contractor or as a sprinkler fitter unless he is lawfully licensed under the provisions of section eighty-five.