In these regulations, the following terms have the meanings indicated. Terms Defined. “ASME Code” means the “ASME Boiler and Pressure Vessel Code” of the American Society of Mechanical Engineers with revisions, amendments, and interpretations adopted by the Board of Boiler Rules. “Antique boiler” means a boiler that is: Fabricated and stamped: In accordance with the ASME Code or another nationally recognized boiler construction standard; and More than 30 years before the date of the inspection; Operated primarily for demonstration, exhibition, or instructional purposes and not for profit; or Constructed, inspected, and stamped in accordance with the ASME Code and registered with the National Board of Boiler and Pressure Vessels Inspectors to replace a historical boiler. “Approved” means approved by the Board of Boiler Rules. “Authorized Inspection Agency” means an entity that: Is accredited in accordance with the National Board of Boiler and Pressure Vessel Inspectors NB-369, Qualifications and Duties for Authorized Inspection Agencies Performing Inservice Inspection Activities and Qualifications for Inspectors of Boilers and Pressure Vessels; Is accredited in accordance with the National Board of Boiler and Pressure Vessel Inspectors NB-371, Accreditation of Owner-User Inspection Organizations (OUIO); or Meets the qualifications and definition of the National Board of Boiler and Pressure Vessel Inspectors NB-360, Criteria for Acceptance of Authorized Inspection Agencies for New Construction. “Authorized Insurer” means an authorized inspection agency licensed to insure boilers and pressure vessels in Maryland. “Board” means the Board of Boiler Rules. “Boiler external piping” means piping which: Begins where the boiler proper terminates at the: First circumferential joint for welded end connections; Face of the first flange in bolted flanged connections; or First threaded joint in threaded connections; and Extends up to and including the valve or valves required by Section I or Section IV of the ASME Code. “Certificate of Competency” means a certificate issued by the Chief Boiler Inspector indicating the suitability and fitness of an individual to inspect boilers and pressure vessels in Maryland. “Certificate inspection” means an inspection the report of which is used by the Chief Boiler Inspector to determine whether to issue a certificate. “Certificate of inspection for repair or alteration” means the certificate inspection performed after a repair or alteration to determine suitability of the object for return to service. “Commissioner” means the Commissioner of Labor and Industry. “Condemned boiler or pressure vessel” means a boiler or pressure vessel that has been inspected and declared unsafe or declared disqualified under legal requirements by an inspector who is authorized to take such action and who has applied a stamp or mark designating condemnation. “Electric boiler” means a boiler in which the source of heat is electricity. “Existing boiler or pressure vessel installation” means: A boiler constructed, installed, placed in operation, or contracted for before July 1, 1969, excluding antique boilers, historical boilers or model steam boilers; or A pressure vessel constructed, installed, placed in operation, or contracted for before January 1, 1974, excluding antique boilers, historical boilers or model steam boilers. “External inspection” means an inspection made when a boiler or pressure vessel is in operation. “Follow up inspection” means an inspection performed after a boiler or pressure vessel has been determined to be nonconforming with applicable laws and regulations. Heating Boiler. “Heating boiler” means: A steam boiler that operates at pressures not exceeding 15 PSIG; or A hot water boiler operated at pressures not exceeding 160PSIG or temperatures not exceeding 250°F at or near the boiler outlet. “Heating boiler” includes a vessel used in connection with it as an expansion tank. “High-pressure, high-temperature water boiler” means a water boiler that operates at pressures exceeding 160 PSIG or temperatures exceeding 250°F at or near the boiler outlet. “Historical boiler” means a boiler that is: Riveted and/or welded construction; Not under the jurisdiction of the Federal Railroad Administration; Not used for profit; and An antique boiler, steam tractor, traction engine, hobby steam boiler, or portable steam boiler that is preserved, restored, and maintained for demonstration, viewing, or educational purposes. “Hobby steam boiler” means a model steam boiler. “Hot water heating boiler” means a heating boiler furnishing hot water circulated to return to itself. “Hot water supply boiler” means a heating boiler furnishing hot water for use external to itself. “Individually fabricated” means constructed, inspected, and stamped in accordance with the ASME Code, or other standard accepted by the Chief Boiler Inspector. “Inspector” means the chief boiler inspector, a deputy boiler inspector, or a special inspector. "Installer” means an individual, firm, association, corporation, or other entity that installs or constructs boilers or pressure vessels. “Internal inspection” means an examination as complete as possible of the internal and external surfaces of a boiler or pressure vessel conducted while it is not in operation, and with all manhole plates, hand hole plates, and other coverings of inspection openings removed. “Kitchen” means an area used for the preparation or processing of food for human consumption. “Kitchen equipment boiler” means a boiler located in a kitchen, and used for cooking or related purposes. “Lap-seam crack” means a crack in a lap-seam of a boiler or pressure vessel parallel to a longitudinal joint, either between or adjacent to rivet holes. “Maryland inspection report form” means the form submitted by an inspector and available on the Department’s website. “Miniature boiler” means a boiler when none of the following limitations are exceeded: 16 inches inside diameter of shell; 20 square feet heating surface, except for an electric boiler; 5 cubic feet gross volume, exclusive of casing and insulation; and 100 psig maximum allowable working pressure. “Model steam boiler” means a boiler that is individually fabricated for non-commercial use and that is used primarily for demonstration, exhibition, or educational purposes, and not used for profit. “Maximum allowable operating pressure” means the maximum pressure at which a boiler or pressure vessel is permitted to operate as determined by an inspector after an inspection and which is equal to or less than the maximum allowable working pressure. “Maximum allowable working pressure” means the maximum pressure at which a boiler or pressure vessel is designed to operate as determined by the manufacturer in accordance with the construction code. “Modular boiler system” means a series of boiler units specifically designed to be used singularly or together in sequential operation. “National Board” means the National Board of Boiler and Pressure Vessel Inspectors. “NBIC” means the National Board Inspection Code. “New boiler or pressure vessel installation” means: A boiler constructed, installed, placed in operation, or contracted for after July 1, 1969; or A pressure vessel constructed, installed, placed in operation, or contracted for after January 1, 1974. “Nonstandard boiler or pressure vessel” means a boiler or pressure vessel that does not bear the stamp of: Maryland; Another jurisdiction which has adopted a standard of construction equivalent to that required by the Board of Boiler Rules; The ASME; or The National Board. “Owner” means a person, firm, or corporation owning or operating a boiler or pressure vessel within Maryland. “Owner-user inspection service” means an owner of a boiler or pressure vessel in Maryland, who maintains a regularly established inspection department whose inspection procedures meet the applicable requirements of the National Board of Boiler and Pressure Vessel Inspectors and are acceptable to the Board. “Person” means an installer, owner, or operator of a boiler or pressure vessel, a repair organization, or a company licensed to insure or inspect boilers and pressure vessels in the State. “Portable boiler or pressure vessel” means a boiler or pressure vessel that is not historical but meets the following requirements: Is set on a frame, platform or trailer; and Is designed to be moved to different locations for use. “Portable steam boiler” means a historical boiler that is: Not self-propelled; Set on a frame, platform, or trailer; and Designed to be moved to different locations for use. “Power boiler” means a boiler in which steam or other vapor is generated at a pressure of more than 15 PSIG, and includes a high-pressure, high-temperature water boiler. “PSIG” means pounds per square inch gauge. “Standard boiler or pressure vessel” means a boiler or pressure vessel that: Bears the stamp of Maryland; Bears the stamp of another jurisdiction which has adopted a standard of construction equivalent to that required by the Board of Boiler Rules; Bears the stamps of both ASME and the National Board; or Is of equivalent safe construction acceptable to the Board. “Used boiler or pressure vessel” means a boiler or pressure vessel which has been removed from its original setting and reinstalled at the same or different location. “Water heater” means a closed vessel with openings through which water may flow and includes: An apparatus by which heat is generated; Controls necessary to prevent pressures greater than 160 psig and water temperatures greater than 210 degrees F; and Potable water that is withdrawn for external use. “Workday” means a day that is not a Saturday, a Sunday, or a State holiday.