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20.24.590 CFC Section 3704.3.3 amended — Outdoor storage weather protection <br /> for portable tanks and cylinders. <br /> Section 3704.3.3 is amended to read: <br /> 3704.3.3 Outdoor storage weather protection for portable tanks and cylinders. <br /> Weather protection in accordance with Section 2704.13 and this section shall be <br /> provided for portable tanks and cylinders located outdoors and not within gas cabinets <br /> or exhausted enclosures. The storage area shall be equipped with an approved <br /> automatic sprinkler system in accordance with Section 903.3.1.1 <br /> 20.24.600 CFC Section 4105.4 added — Pyrophoric gas distribution systems. <br /> Section 4105.4 is added to read: <br /> 4105.4 Pyrophoric gas distribution systems. <br /> 4105.4.1 Ventilation. Cylinders in use and non - welded or brazed connections shall <br /> be provided with approved, local ventilation. Failure of the ventilation system (as <br /> determined by air flow measurement) shall automatically shut down the distribution <br /> system at the source. <br /> 4105.4.2 Automatic shutdown. Pyrophoric gas distribution systems shall be <br /> provided with an approved release detection system at points of use and non - <br /> welded or — brazed connections. Upon activation, the detection system shall <br /> automatically shut down the distribution system at the source. <br /> 20.24.610 CFC Section 4603.4 amended — Existing commercial or industrial <br /> buildings or structures. <br /> 4603.4 Existing commercial or industrial buildings or structures. An automatic fire <br /> sprinkler system shall be provided in existing commercial buildings in accordance with <br /> Section 4603.4.1, Section 4603.4.2 and as follows: <br /> 1. Additions to any commercial or industrial building creating a 50% or more <br /> increase of floor area, or an addition of any size creating a total area exceeding <br /> 8,000 square feet. <br /> Exception: Additions not greater than 500 square feet in area to an existing <br /> non -fire sprinklered building providing accessory storage space or solely for <br /> the purpose of providing accessibility shall not be required to be provided with <br /> automatic fire sprinklers. <br /> 2. When a change in occupancy classification results in an increased fire hazard or <br /> risk to business operations or increased life safety hazard of the occupants. <br /> Any detached or attached structure added to a parcel of land already containing <br /> automatic extinguishing system protected buildings. <br /> 72 <br />