Section 12-222.1-11 - Boiler room and operating area(a) The following shall apply to the care of the boiler room: (1) The boiler room shall be free from accumulation of rubbish and materials that obstruct access to the boiler, its setting, or firing equipment;(2) The storage of flammable material or gasoline powered equipment in the boiler room is prohibited;(3) The roof over boilers designed for indoor installations, shall be free from leaks and maintained in good condition;(4) Adequate drainage shall be provided;(5) All exit doors shall open outward; and(6) It is recommended that the ASME BPVC Section VII be used as a guide for proper and safe operating practices.(b) The following shall apply to boiler supports, foundations, and settings: (1) Each boiler and its associated piping shall be safely supported. Design of supports, foundations, and settings shall consider vibration, including seismic where necessary, movement including thermal expansion and contraction, and loadings including the weight of the fluid in the system during a pressure test in accordance with jurisdictional requirements, manufacturers recommendations, and other industry standards as applicable; and(2) If the boiler is supported by structural steel, the steel supporting members shall be so located or insulated that the heat from the furnace will not affect their strength. Structural steel shall be installed in accordance with jurisdictional requirements, manufacturer's recommendations, and other industry standards, as applicable.(c) Exit. Two means of exit shall be provided for equipment rooms exceeding five hundred (500) square feet of floor area and containing one or more boilers having a combined fuel capacity of 1,000,000 Btu/hr or more (or equivalent electrical heat input). Each elevation shall be provided with at least two means of exit, each to be remotely located from each other. A platform at the top of a single boiler is not considered an elevation.(d) Ladders and runways. The following shall apply to ladders and runways: (1) All walkways, runways, and platforms shall be of metal construction or equivalent material;(2) Provided between or over the top of boilers that are more than eight (8) feet above the operating floor to afford accessibility for normal operation, maintenance, and inspection;(3) Constructed of safety treads, standard grating, or similar material and have a minimum width of thirty (30) inches; of bolted, welded, or riveted construction; and equipped with handrails forty-two (42) inches high with an intermediate rail and four (4) inch toe-board;(4) Stairways that serve as a means of access to walkways, runways, or platforms shall not exceed an angle of forty-five (45) degrees from the horizontal and shall be equipped with handrails forty-two (42) inches high with an intermediate rail;(5) Ladders that serve as a means of access to walkways, runways, or platforms shall: (A) Be made of metal construction and not less than eighteen (18) inches wide;(B) Have rungs that extend through the side members and are permanently secured;(C) Have a clearance of not less than thirty (30) inches from the front of rungs to the nearest permanent object on the climbing side of the ladder;(D) Have a clearance of not less than six and a half (6-1/2) inches from the back of rungs to the nearest permanent object; and(E) Have a clearance width of at least fifteen (15) inches from the center of the ladder on either side across the front of the ladder; and(6) There shall be at least two permanently installed means of exit from walkways, runways, or platforms that exceed six (6) feet in length.(e) Fuel. Fuel systems, whether firing coal, oil, gas, or other substance, shall be installed in accordance with departmental, environmental requirements, manufacturer's recommendations, and industry standards, as applicable.(f) Ventilation and combustion air. The following shall apply to ventilation and combustion air: (1) The equipment room shall have an adequate air to permit clean, safe combustion, minimize soot formation, and maintain a minimum of nineteen and a half per cent (19.5%) oxygen in the air of the equipment room and sufficient to maintain ambient temperatures as recommended by the boiler manufacturer. The combustion and ventilation air should be supplied by either an unobstructed air opening or by power ventilation or fans;(2) When combustion air is supplied to the boiler, heater, or vessel by an independent duct, with or without the employment of power ventilators or fans, the duct shall be sized and installed in accordance with the manufacturer's recommendations provided that ventilation for the equipment room must still be considered;(3) Unobstructed air openings shall be sized based on the manufacturer's recommendations, or as specified by the National Fire Protection Association (NFPA) standards for oil and gas burning installations for the particular job conditions, or 1 square inch free area per 2000 Btu/hr maximum fuel input of the combined burners located in the equipment room. The equipment room supply openings shall be kept clear at all times;(4) Power ventilators or fans shall be sized on the basis of 0.2 cfm for each 1000 Btu/hr of maximum fuel input for the combined burners of all boilers and heaters located in the equipment room. Additional capacity may be required for other fuel burning equipment in the equipment room;(5) When power ventilators or fans are used to supply combustion air, they shall be installed with interlock devices so that burners will not operate without an adequate number of ventilators or fans in operation;(6) The size of openings specified in subsection (c) may be reduced when special engineered air supply systems approved by the department are used; and(7) Care shall be taken to ensure that steam, water, and fluid lines are not routed across combustion air openings, where freezing may occur.(g) Lighting. The equipment room shall be well lit and have an emergency light source for use in case of power failure.(h) Chimneys or stacks shall be installed in accordance with jurisdictional, environmental requirements, manufacturer's recommendations, and industry standards, as applicable.(i) Ash removal systems shall be installed in accordance with jurisdictional, environmental requirements, manufacturer's recommendations, and industry standards, as applicable.(j) Carbon monoxide (CO) detector/alarm. The owner or user shall install a carbon monoxide detector/alarm in equipment rooms where fuel fired boilers or fuel fired pressure vessels are located, in accordance with manufacturer's recommendation, and industry standards, as applicable.(k) Water (cleaning). A convenient water supply shall be provided for flushing out the boiler and its appurtenances, adding water to the boiler while it is not under pressure, and cleaning the equipment room floor.(l) Final acceptance. A power boiler may not be placed into service until its installation has been inspected and accepted by the department.Haw. Code R. § 12-222.1-11
[Eff and comp 12/21/2019] (Auth: HRS § 397-4) (Imp: HRS § 397-4)