Statutes > Massachusetts Statutes > PART I ADMINISTRATION OF THE GOVERNMENT > TITLE XX PUBLIC SAFETY AND GOOD ORDER > CHAPTER 146 INSPECTION OF BOILERS, AIR TANKS, ETC. LICENSES OF ENGINEERS, FIREMEN, AND OPERATORS OF HOISTING MACHINERY > Section 42 Safety valves
Section 42. No person shall use an ammonia compressor unless it is equipped with a safety valve.