2003 APRIL - Laserfiche WebLink

20.24.240 which shall document the standards and reason for the exception. (2) Local Gas Shut-Off. [i] Manual activation controls shall be pro- vided at locations neaz the point of use and near the source, as approved by the Fire Chief. [ii] The Fire Chief may require additional controls at other places, including, but not limited to, the entry to the building, the area in the building where regulated materi- als are stored or used, and emergency con- trol stations. [iii] Manually activated shut-off valves shall be of "fail safe to close" design. (3) Emergency Power. Emergency power shall be provided for: [i] Exhaust ventilation, including the power supply for treatment systems. [ii] Gas-detection systems. [iii] Emergency building alarm systems and fire detection alarm transmission to an approved Underwriters Laboratory (UL) Central Station Service monitoring compa- ny. [iv] Temperature-control systems which comply with the Fire Code. (4) Excess Flow Control. [i] Portable tanks and cylinders shall be provided with excess flow control. [ii] Valves shall be permanently marked to indicate the maximum design flow rate. (5) Gas Detection. A continuous gas-detec- tion system (in accordance with the Uni- form Fire Code, Section 8003.3.1.6) shall be provided to detect the presence of gas at or below the permissible exposure limit. The detection system shall initiate a local alarm and transmit a signal to an approved Underwriters Laboratory (UL) Central Station Service as directed by the Fire Chief, to provide an immediate response to an alarm. The alarm shall be both visual and' audible and shall be designed to pro- vide wazning both inside and outside. of the storage, use or handling area. The audible alarm shall be distinct from all other on- site alarms. (6) Reduced Flow Valves. Reduced flow valves may be utilized to reduce the maxi- mum flow rate from cylinders and tanks under full flow conditions. Valve flow rates may be considered in determining the size of treatment systems required for a worst case release. (7) Seismic Shut-off Valves. A seis- mologically activated valve meeting stan- dards approved by the Fire Chief shall be provided for automatic shut off of regulated materials upon a seismic event within 5 seconds of horizontal semisoidal oscillation having a peak acceleration of .15g (=1.47m/sect) and a period of .4 seconds. (8) Class II Corrosives. Inert construction materials shall be used for the primary containment of Class II Regulated Materi- als which aze corrosives. Alternatively, secondary containment shall be provided for Class II materials which are corrosives. (9) Emergency Alarms. When materials regulated by this Article are transported through exit corridors or exit enclosures, there shall be an emergency telephone system or a local manual alarm station or a signaling device approved by the Fire Chief at not more than 150-foot intervals and at each exit doorway throughout the transport '] 10-59 (Pleasanton April 2003)