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Ordinance No. 2241 Page 30 of 60 6004.1.3 Exhausted enclosures.Exhausted enclosures containing highly toxic,toxic or moderately toxic gases shall comply with Section 5003.8.5 and the following requirements: [balance to remain the same] 20.24.320 CFC Sections 6004.1.4 added—Automatic shut-off valve. Section 6004.1.4 is added to read: 6004.1.4 Automatic shut-off valve.An automatic shut-off valve,which is of a fail-safe to close design, shall be provided to shut off the supply of highly toxic gases as close as possible to the supply container for any of the following: 1. Activation of a manual fire alarm system. 2. Activation of the gas detection system. 3. Failure of emergency power. 4. Failure of primary containment. 5. Seismic activity. 6. Failure of required ventilation. 7. Manual activation at an approved remote location. 20.24.330 CFC Section 6004.1.5 added—Annual Maintenance. Section 6004.1.5 is added to read: 6004.1.5 Annual Maintenance.All safety control systems at a facility shall be maintained in good working condition and tested not less frequently than annually. Maintenance and testing shall be performed by persons qualified to perform the maintenance and tests. Maintenance records and certifications shall be kept for a minimum of three years and shall be made available to any representative of the Livermore-Pleasanton Fire Department for inspection upon request. 20.24.340 CFC Section 6004.1.6 added—Maximum threshold quantity. Section 6004.1.6 is added to read: 6004.1.6 Maximum threshold quantity. Toxic gases stored or used in quantities exceeding the maximum threshold quantity in a single vessel per control area or outdoor control area or H-Occupancy shall comply with the additional requirements for highly toxic gases of Section 6004 of this code. Moderately toxic gases stored or used in quantities exceeding the maximum threshold quantity in a single vessel per control area or outdoor control area or H-Occupancy shall comply with the additional requirements for toxic gases of Section 6004 of this code. 20.24.350 CFC Section 6004.1.7 added—Reduced flow valve. Section 6004.1.7 is added to read: 6004.1.7 Reduced flow valve.All containers of materials other than lecture bottles containing highly toxic material and having a vapor pressure exceeding 29 psi shall be equipped with a reduced flow valve when available. If a reduced flow valve is not available,the container shall be used with a flow-limiting device. All flow limiting devices shall be part of the valve assembly and visible to the eye when possible; otherwise,they shall be installed as close as possible to the cylinder source. Exception: When the process use rate is approximately equal to the maximum flow rate of the cylinder/tank valve.