Group 20 - Flammable Liquids, Gases and Vapors
- Article 134 - Definitions (§ 5415)
- Article 135 - General (§ 5416 to 5420)
- Article 136 - Dip Tanks (§ 5426 to 5439)
- Article 137 - Spray Coating Operations (§ 5445 to 5461)
- Article 138 - Hydrogen (§ 5465 to 5498)
- Article 139 - Oxygen (§ 5500 to 5509)
- Article 140 - Electrical Equipment (§ 5530)
- Article 141 - Container and Portable Tank Storage (§ 5531 to 5543)
- Article 142 - Industrial Plants (§ 5545 to 5551)
- Article 143 - Processing Plants (§ 5554 to 5562)
- Article 144 - Service Stations (§ 5565 to 5581)
- Article 145 - Tank Storage (§ 5583 to 5605)
- Article 146 - Piping, Valves and Fittings (§ 5606 to 5612)
- Article 147 - Bulk Plants (§ 5614 to 5624)
- Article 148 - Refineries, Chemical Plants, Wineries and Distilleries (§ 5629)
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