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Attachment 1 Exhibit B <br />Page 35 of 64 <br /> <br />20.24.340 CFC Section 6004.1.6 added – Maximum threshold quantity. <br /> <br />Section 6004.1.6 is added to read: <br /> <br />6004.1.6 Maximum threshold quantity. Toxic gases stored or used in quantities exceeding the <br />maximum threshold quantity in a single vessel per control area or outdoor control area or H- <br />Occupancy shall comply with the additional requirements for highly toxic gases of Section 6004 of <br />this code. <br /> <br />Moderately toxic gases stored or used in quantities exceeding the maximum threshold quantity in a <br />single vessel per control area or outdoor control area or H-Occupancy shall comply with the <br />additional requirements for toxic gases of Section 6004 of this code. <br /> <br />20.24.350 CFC Section 6004.1.7 added – Reduced flow valve. <br /> <br />Section 6004.1.7 is added to read: <br /> <br />6004.1.7 Reduced flow valve. All containers of materials other than lecture bottles containing highly <br />toxic material and having a vapor pressure exceeding 29 psi shall be equipped with a reduced flow <br />valve when available. If a reduced flow valve is not available, the container shall be used with a flow- <br />limiting device. All flow limiting devices shall be part of the valve assembly and visible to the eye <br />when possible; otherwise, they shall be installed as close as possible to the cylinder source. <br /> <br />Exception: When the process use rate is approximately equal to the maximum flow rate of the <br />cylinder/tank valve. <br /> <br />20.24.360 CFC Section 6004.1.8 added – Fire extinguishing systems. <br /> <br />Section 6004.1.8 is added to read: <br /> <br />6004.1.8 Fire extinguishing systems. Buildings and covered exterior areas for storage and use areas <br />of materials regulated by this Chapter shall be protected by an automatic fire sprinkler system in <br />accordance with NFPA 13. The design of the sprinkler system for any room or area where highly <br />toxic, toxic and moderately toxic gases are stored, handled or used shall be in accordance with <br />Section 5004.5. <br /> <br />20.24.370 CFC Section 6004.1.9 added – Local gas shut off. <br /> <br />Section 6004.1.9 is added to read: <br /> <br />6004.1.9 Local gas shut off. Manual activation controls shall be provided at locations near the point <br />of use and near the source, as approved by the fire code official. The fire code official may require <br />additional controls at other places, including, but not limited to, the entry to the building, storage or <br />use areas, and emergency control stations. Manual activated shut-off valves shall be of a fail-safe-to- <br />close design. <br /> <br />20.24.380 CFC Section 6004.1.10 added – Exhaust ventilation monitoring. <br /> <br />Section 6004.1.10 is added to read: <br /> <br />Page 46 of 376