2023 Delaware Code › Title 7 - Conservation › Chapter 74B. BOILER SAFETY PROGRAM › § 7402B. Definitions.

§ 7402B. Definitions.
(a) “Boiler” shall mean 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 or nuclear energy. The term “boiler” shall include fired units for heating or vaporizing liquids other than water, where these units are separate from processing systems, and are complete within themselves.
(1) “Heating boiler” shall mean a steam boiler operating at pressures not exceeding 15 psi, or a hot water boiler operating at pressures not exceeding 160 psi and/or temperatures not exceeding 250 degrees Fahrenheit which is supplied to an external heating system.
(2) “High temperature water boiler” shall mean a water boiler operating at a pressure exceeding 160 psi and/or temperatures in excess of 250 degrees Fahrenheit.
(3) “Hot water supply boiler” shall mean a vessel used to heat water for purposes other than space heating, where the water is used external to itself, at pressures not exceeding 160 psi, and/or temperatures not exceeding 250 degrees Fahrenheit at or near the boiler outlet. American Society of Mechanical Engineers (ASME) Stamping would be “ASME Section IV, H.”
(4) “Jacketed cooking kettle” shall mean a gas or electrically fired jacketed cooking kettle built and stamped “ASME Section VIII, Division 1.” ASME stamping would be “U.”
(5) “Pool heater” shall mean an appliance designed for heating nonpotable water stored at atmospheric pressure such as water in swimming pools, spas, hot tubs, and similar applications.
(6) “Power boiler” shall mean a vessel in which steam or other vapor is generated at a pressure of more than 15 PSIG.
(7) “Thermal fluid heater” shall mean a boiler used to heat an organic fluid for heating and or processing that does not vaporize in the process. Object is considered a boiler in the State of Delaware and is required to be built to Section I of the ASME Construction Codes and registered with the National Board. Overpressure protection will be in accordance with ASME Section I Part PVG.
(8) “Water heater” shall mean a closed vessel in which water is heated by gas, oil, electric, or some other fuel supply, and the water is used externally to itself for potable water supply, or used for potable water and space heating, operating at pressures not exceeding 160 psi and water temperatures not in excess of 210 degrees Fahrenheit. ASME Stamping would be “ASME Section IV, HLW.”
(b) “Council” shall mean the Governor's Council on Boiler Safety.
(c) “Department” shall mean the Department of Natural Resources and Environmental Control.
(d) “National Board” shall mean the National Board of Boiler and Pressure Vessel Inspectors.
(e) “NBIC” shall mean the National Board Inspection Code. The manual for boiler and pressure vessel inspectors, published by the National Board of Boiler and Pressure Vessel Inspectors. The NBIC is recognized for Repairs and Alterations, and Antique (Historical) boilers only (Part 3 only).
(f) “Place of public assembly” shall mean any establishment, building, location or any portion thereof within this State intended and used for occupation by persons while employed therein for compensation of any kind, any commercial structure and/or location to which the public has access.
(g) “Pressure vessel” shall mean containers for the containment of pressure, either internal or external. The pressure may be obtained from an external source or by the application of heat from a direct or indirect source, or any combination thereof.
(h) “PSI” or “psi” shall mean pounds per square inch.
(i) “PSIG” or “psig” shall mean pounds per square inch gauge.
(j) “Secretary” shall mean the Secretary of the Department of Natural Resources and Environmental Control.
(k) “Shop review” shall mean a general survey and examination of a boiler or pressure vessel manufacturing or repair firm's facilities, methods and records. The examination is performed by a designee of the ASME, and/or the National Board.
78 Del. Laws, c. 127, §  7;