Section R. 408.41875 - L.P. containers and equipmentRule 1875.
(1) Containers in use shall be in compliance with all of the following provisions: (a) Each system shall have containers, valves, connectors, manifold valve assemblies, and regulators of an approved type.(b) Filling of fuel containers for trucks or motor vehicles from bulk storage containers shall be performed not less than 10 feet from the nearest masonry-walled building, or not less than 25 feet from the nearest building or other construction and, in any event, not less than 25 feet from any building opening.(c) Filling of portable containers or containers mounted on skids from storage containers shall be performed not less than 50 feet from the nearest building.(d) All of the following provisions apply to multiple container systems: (i) Valves in the assembly of multiple container systems shall be arranged so that replacement of containers can be made without shutting off the flow of gas in the system. This provision shall not be construed as requiring an automatic changeover device.(ii) Heaters shall be equipped with an approved regulator in the supply line between the fuel cylinder and the heater unit. Cylinder connectors shall be provided with an excess flow valve to minimize the flow of gas in the event the fuel line becomes ruptured.(iii) Regulators and low-pressure relief devices shall be rigidly attached to the cylinder valves, cylinders, supporting standards, the building walls, or otherwise rigidly secured, and shall be so installed or protected from the elements.(2) When damage to LP-Gas systems from vehicular traffic is a possibility, the employer shall ensure that precautions against such damage are taken.(3) Piping, pipe and tubing fittings, and valves used to supply utilization equipment within the scope of this standard shall be acceptable for services as approved by the manufacture of the equipment.(4) Welding is prohibited on containers.(5) Valves, fittings, and accessories connected directly to the container, including primary shut off valves, shall have a rated working pressure of at least 250 p.s.i.g. and shall be of material and design suitable for LP-Gas service.(6) Connections to containers, except safety relief connections, liquid level gauging devices, and plugged openings, shall have shutoff valves located as close to the container as practicable.(7) All cylinders shall meet the provisions of the Department of Transportation Title 49 C.F.R. Part 178, "Shipping Container Specifications," as adopted in R 408.41802.(8) When operational requirements make portable use of containers necessary, and their location outside of buildings or structures is impracticable, containers and equipment shall be permitted to be used inside of buildings or structures in accordance with R 408.41884(12), (13), and (16), and the following rules: (a) Systems utilizing containers having a water capacity greater than 2 1/2 pounds, nominal 1 pound LP-Gas capacity, shall be equipped with excess flow valves. Such excess flow valves shall be either integral with the container valves or in the connections to the container valve outlets.(b) Regulators shall be either directly connected to the container valves or to manifolds connected to the container valves. The regulator shall be suitable for use with LP -Gas. Manifolds and fittings connecting containers to pressure regulator inlets shall be designed for not less than 250 p.s.i.g. service pressure.(c) Valves on containers having water capacity greater than 50 pounds, nominal 20 pounds LP-Gas capacity, shall be protected from damage while in use or storage.(d) Aluminum piping or tubing shall not be used.(e) Hose shall be designed for a working pressure of at least 250 p.s.i.g. Design, construction, and performance of hose, and hose connections shall have their suitability determined by listing by a nationally recognized testing agency. The hose length shall be as short as practicable. Hoses shall be long enough to permit compliance with spacing provisions of this rule and R 408.41884(6), (7), (8), (12), (13), and (16), without kinking or straining, or causing hose to be so close to a burner as to be damaged by heat.(f) Containers having a water capacity greater than 2 1/2 pounds, nominal 1 pound LP-Gas capacity, connected for use shall stand on a firm and substantially level surface and, when necessary, shall be secured in an upright position.(g) The maximum water capacity of individual containers shall be 245 pounds (nominal 100 pounds L.P. gas capacity).Mich. Admin. Code R. 408.41875
1979 AC; 1983 AACS; 2002 AACS; 2015 MR 7, Eff. April 14, 2015