2023 Oklahoma Statutes › Title 40. Labor › §40-141.1. Short title - Definitions.

This act shall be known and may be cited as the "Boiler and Pressure Vessel Safety Act", and, except as otherwise herein provided, shall apply to all boilers and pressure vessels. For the purpose of this act, the following definitions apply:
1. "Boiler" means a closed vessel in which water is heated, steam is generated, steam is superheated, or any combination thereof, under pressure or vacuum, for external use to itself, by the direct application of heat. The term "boiler" includes fired units for heating or vaporizing liquids other than water where these units are separate from processing systems and complete within themselves:
a.
"power boiler" means a boiler in which steam or other vapor is generated at a pressure of more than fifteen (15) pounds per square inch gauge, or as further defined in American Society of Mechanical Engineers Boiler and Pressure Vessel Code Section I,
b.
"high-temperature water boiler" means a water boiler intended for operation at pressures in excess of one hundred sixty (160) pounds per square inch gauge; or temperatures in excess of two hundred fifty degrees Fahrenheit (250° F), or as further defined in American Society of Mechanical Engineers Boiler and Pressure Vessel Code Section I,
c.
"low pressure steam boiler" means a steam boiler operating at pressures not exceeding fifteen (15) pounds per square inch gauge, or as further defined in American Society of Mechanical Engineers Boiler and Pressure Vessel Code Section IV,
d.
"hot water heating boiler" means a heating boiler operating at pressures not exceeding one hundred sixty (160) pounds per square inch gauge - one thousand one hundred three (1,103) kilopascals and/or 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,
e.
"hot water supply boiler" means a supply boiler operating at pressures not exceeding one hundred sixty (160) pounds per square inch gauge - one thousand one hundred three (1,103) kilopascals and/or 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.