1999 MAY - Laserfiche WebLink

20.24.120 nized standards, if any, ap- proved by the Fire Chief, and shall have welded connections compatible with the regulated material throughout unless an exhausted enclosure is provided. [ii] Material which is not compatible with ferrous piping may be installed in non-ferrous piping approved by the Fire Chief. [iii] Where connections other than welded connections meet appropriate nationally recognized industry standards, if any, a person responsible for a facility may seek an exception from the Fire Chief, by filing a request for exception with the Fire Chief, which shall docu- ment the standards and reason for the exception. (2) Local Gas Shut-Off. [i] Manual activation con- trols shall be provided at loca- tions near 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 build- ing where regulated materials are stored or used, and emer- gency control stations. [iii] Manually activated shut-off valves shall be of "fall safe to close" design. (3) Emergency Power. Emer- gency 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 ap- proved central station. [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 perma- nently marked to indicate the maximum design flow rate. (5) Gas Detection. A continuous gas-detection system (in accor- dance with the 1994 Ed. Uniform 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 (Pleasanton 5-99) 710-24