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6004.1.12 Emergency response liaisons. Responsible persons shall be designated and trained to be liaison personnel for the Livermore Pleasanton Fire Department. These persons shall aid the Fire Department in preplanning emergency responses, identifying locations where regulated materials are stored, handled and used, and be familiar with the chemical nature of such material. An adequate number of personnel for each work shift shall be designated 20.24.520 CFC Section 6004.1.13 added — Emergency drills. Section 6004.1.13 is added to read: 6004.1.13 Emergency drills. Emergency drills of the on -site emergency response personnel and liaisons shall be conducted on a regular basis but not less than once every six months. Records of drills conducted shall be maintained. 20.24.530 CFC Section 6004.1.14 added — Cylinder leak testing. Section 6004.1.14 is added to read: 6004.1.14 Cylinder leak testing. Cylinders shall be tested for leaks immediately upon delivery and again immediately prior to departure. Testing shall be approved by the fire code official in accordance with appropriate nationally recognized industry standards and practices, if any. Appropriate remedial action shall be immediately undertaken when leaks are detected 20.24.540 CFC Section 6004.1.15 added — Inert gas purge system. Section 6004.1.15 is added to read: 6004.1.15 Inert gas purge system. Gas systems shall be provided with dedicated inert gas purge systems. A dedicated inert gas purge system may be used to purge more than one gas, provided the gases are compatible. Purge gas systems inside buildings shall be located in an approved gas cabinet unless the system operates by vacuum demand. Backflow prevention shall be provided. Exception: Refrigeration systems. 20.24.550 CFC Section 6004.1.16 added — Seismic shutoff valve. Section 6004.1.16 is added to read: 6004.1.16 Seismic shutoff valve. For other than lecture bottles, an automatic seismic shut -off valve, which is of a fail -safe to close design, shall be provided to shutoff the supply of highly toxic, toxic and moderately toxic gases with an LC50 less than 3000 parts per million upon a seismic event within 5 seconds of a horizontal sinusoidal oscillation having a peak acceleration of 0.3G (1.47m /sec2) and a period of 0.4 seconds