Terms as used in this chapter, unless the context otherwise requires, mean:
             (1)      “Boiler,” a closed vessel in which water is heated, steam is generated, steam is superheated, or any combination thereof, under pressure or vacuum, for use externally to itself by the direct application of heat from the combustion of fuels, or from electricity, nuclear or solar energy. The term “boiler” includes fired units for heating or vaporizing liquids other than water where these units are separate from processing systems and are complete within themselves. The term “boiler” includes the apparatus by which heat is generated and all controls and safety devices associated with such apparatus or the closed vessel;
             (2)      “Certificate inspection,” an inspection, the report of which is used by the chief inspector to decide whether or not a certificate as provided by § 34-29A-39 may be issued. This certificate inspection shall be an internal inspection when required; otherwise, it shall be as complete an inspection as possible;
             (3)      “Heating boiler,” a steam or vapor boiler operating at pressures not exceeding fifteen psig, or a hot water boiler operating at pressures not exceeding 160 psig or temperatures not exceeding 250 degrees F;
             (4)      “High pressure, high temperature water boiler,” a water boiler operating at pressures exceeding 160 psig or temperatures exceeding 250 degrees F;
             (5)      “Historic power boiler,” a standard or nonstandard power boiler, including free-lance and scale models, owned by publicly operated museums, nonprofit organizations and individuals who preserve, maintain, exhibit, and only occasionally operate these boilers on a not-for-profit basis and for the primary purpose of perpetuating the agricultural and pioneer heritage of South Dakota;
             (6)      “Hot water supply boiler (water heater),” a boiler of either instantaneous or storage type, furnishing hot water to be used externally to itself;
             (7)      “Power boiler,” a boiler in which steam or other vapor is generated at a pressure of more than fifteen psig;
             (8)      “Secondhand boiler,” a boiler for which both location and ownership have changed since initial installation.