ORD 2197 - Laserfiche WebLink

Ordinance No. 2197 Exhibit B Page 24 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. Exception: Refrigeration systems. 20.24.440 CFC Section 6004.1.16 added — Seismic shutoff valve. Section 6004.1.16 is added to read: 6004.1.16 Seismic shutoff valve. 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 3,000 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. 20.24.450 CFC Section 6004.1.17 added — Fittings and connections. Section 6004.1.17 is added to read: 6004.1.17 Fittings and connections. Fittings and connections shall be located in a gas cabinet, exhausted enclosure, gas room or exhausted valve manifold box. Exception: Welded connections. 20.24.460 CFC Section 6004.2 amended — Indoor storage and use. Section 6004.2 is hereby amended to read: 6004.2 Indoor storage and use amended. The indoor storage or use of highly toxic, toxic and moderately toxic compressed gases shall be in accordance with Sections 6004.2.1 through 6004.2.2.10.4. 20.24.470 CFC Section 6004.2.1 amended —Applicability. Section 6004.2.1 is hereby amended to read: 6004.2.1 Applicability. The applicability of regulations governing the indoor storage and use of highly toxic, toxic and moderately toxic compressed gases shall be in accordance with Sections 6004.2.1.1 through 6004.2.1.5. 20.24.480 CFC Section 6004.2.1.1 amended —Quantities not exceeding the maximum allowable quantity per control area. Section 6004.2.1.1 is hereby amended to read: 6004.2.1.1 Quantities not exceeding the maximum allowable quantity per control area. The indoor storage or use of highly toxic and toxic compressed gases in amounts not exceeding the maximum allowable quantity per control area set forth in Table 5003.1.1(2) shall be in accordance with Sections 5001, 5003, 6001, 6004.1, 6004.2.1.4 and 6004.2.1.5. 20.24.490 CFC Section 6004.2.1.4 added — Quantities not exceeding minimum threshold quantity per control area. Section 6004.2.1.4 is added to read: