R 408.11222 Storage.

Rule 1222. (1) An oxygen cylinder shall be stored not less than 20 feet from fuel gas cylinders or a highly combustible material, such as, but not limited to, oil, grease, excelsior, flammable gas, or a source of ignition, or shall be separated from the material by a noncombustible wall, not less than 5 feet (1.6 meters) high, having a fire-resistance rating of 1/2 hour. An oxygen cylinder shall not be stored in an acetylene generator compartment. The underwriters' laboratory fire resistance directory may be used as a guide to determine fire resistance, as adopted in R 408.11202. (2) A cylinder shall be stored away from heat in excess of 125 degrees Fahrenheit. (3) A cylinder, including an empty cylinder, which is in storage, being shipped, or has the regulator removed shall have the cap secured in place, if a cap is provided in the design, or shall be otherwise protected. (4) Storage shall be set up to ensure first-in, first-out usage. (5) A cylinder storage area shall be posted with the names of the individual gases stocked, and a warning shall be posted against tampering by an unauthorized employee. An assigned storage area shall be located where a cylinder will not be knocked over or struck by a passing or falling object. (6) Where different gases are stored, they shall be grouped by types. Groupings shall separate the flammable gases from the oxidizing gases as in subrule (1) of this rule. (7) A storage area for cylinders shall be well ventilated. A cylinder shall not be stored in basements or pits, except where ventilation as specified by the Michigan Occupational Safety and Health Administration (MIOSHA) standards is furnished to keep the area purged of any accumulation of gases. (8) Storage of fuel gas in a building in 1 area within 100 feet (30 meters) of another fuel gas storage area and not protected by an automatic sprinkler system shall be limited to a total gas capacity of 2,000 cubic feet (56 cubic meters approximately) or 11.8 cubic feet (.33 cubic meters) of liquefied gas, which is 735 pounds (333 kilograms) water capacity. Storage in excess of this amount shall be in a separate room or compartment with an exterior wall and on the top floor of the building, outside, or in a special building. All walls, floors, and ceilings shall be constructed of noncombustible material having a fire- resistance rating of 1 hour. The walls shall be continuous from the floor to the ceiling and shall be securely anchored. The separate room, compartment, or special building shall have no open flame for heat or light and shall be well ventilated. Openings from the separate storage room to other parts of the building shall be protected by a self-closing fire door for a class B opening and shall have a fire-resistance rating of not less than 1 hour. Windows in partitions shall be wired glass and approved metal frames with a fixed sash. Installation shall be in accordance with NFPA 80 “Standard for the Installation of Fire Doors and Windows,” 1974 edition, as adopted in R 408.11202. (9) Where a liquid or gaseous oxygen system is used to supply gaseous oxygen for welding and cutting and the system has a storage capacity of more than 20,000 cubic feet (560 cubic meters), measured at 14.7 psia (101.34 kPa) and 70 degrees Fahrenheit (21.1 degrees Celsius), including unconnected reserves at the site, the system shall be as prescribed in NFPA 50 “Bulk Oxygen Systems,” 1971 edition, as adopted in R 408.11202. (10) A cylinder used for methylacetylene-propadiene, stabilized, shall be constructed of materials suitable for this fuel gas in the gaseous or liquid phases.