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Oklahoma Statutes - Title 40. Labor Page 210 temperatures not exceeding two hundred fifty degrees Fahrenheit (250° F), one hundred twenty-one degrees Celsius (121° C), at or near the boiler outlet, or as further defined in American Society of Mechanical Engineers Boiler and Pressure Vessel Code Section IV, and f. "hot water supply heater" means a closed vessel in which water is heated by the combustion of fuels, electricity or any other source and withdrawn for use external to the system at pressures not exceeding one hundred sixty (160) pounds per square inch gauge and shall include all controls and devices necessary to prevent water temperature from exceeding two hundred ten degrees Fahrenheit (210° F), ninety-eight point nine degrees Celsius (98.9°C); 2. "Pressure vessel" means a vessel in which pressure is obtained from an external source or by the application of heat other than those vessels defined in paragraph 1 of this section or as further defined in American Society of Mechanical Engineers Boiler and Pressure Vessel Code Section VIII, Division I; 3. "Certificate of operation" means an annual certificate, unless otherwise provided for in this act, issued by the Commissioner of Labor permitting the operation of a boiler or pressure vessel which has been inspected as provided for in this act; 4. "Steam lines" means piping of welded construction in which steam is contained and/or transported at a pressure in excess of fifteen (15) pounds per square inch gauge; and 5. "Commissioner" means the Commissioner of Labor or the Commissioner’s duly authorized representative. Added by Laws 1982, c. 252, § 1. Amended by Laws 2003, c. 101, § 1, eff. Nov. 1, 2003.

§40-141.2. Exemptions – Exhibitor boilers. A. This act shall not apply to the following boilers, hot water heaters and pressure vessels: 1. Pressure vessels used for the transportation of compressed gases if constructed and operated in compliance with specifications and regulations of the United States Department of Transportation or of the Corporation Commission of Oklahoma and any unfired pressure vessels used as containers for liquefied petroleum gases and subject to the jurisdiction of the United States Department of Transportation or the Oklahoma Liquefied Petroleum Gas Administration or successor agencies; 2. Pressure vessels containing air located on vehicles operating pursuant to regulations of other jurisdiction authorities;