Chapter 35 — WELDING AND OTHER HOT WORK
Section 3508
California Fire Code (Title 24, Part 9) · 2022 edition · updated 2026-09-10 · California
CBSC: official editions, supplements and errata
Italicized text is a California amendment to the model code, as printed in the official publication.
3508.1 Use of acetylene generators. The use of acetylene¶
generators shall comply with this section and Chapter 15 of NFPA 55.
3508.2 Portable generators. The minimum volume of rooms¶
containing portable generators shall be 35 times the total gasgenerating capacity per charge of all generators in the room. The gas-generating capacity in cubic feet per charge shall be assumed to be 4.5 times the weight of carbide per charge in pounds. The minimum ceiling height of rooms containing generators shall be 10 feet (3048 mm). An acetylene generator shall not be moved by derrick, crane or hoist while charged.
3508.3 Protection against freezing. Generators shall be¶
located where water will not freeze. Common salt such as sodium chloride or other corrosive chemicals shall not be utilized for protection against freezing.
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