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Subchapter 7. General Industry Safety Orders
Group 10. Gas Systems for Welding and Cutting
Article 80. Purpose and Definitions

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§4795. Definitions.

Building, as used in this group. A building having occupancy other than that directly associated with the production of acetylene, the storage of calcium carbide, or the storage and manifolding of gases used in welding, flame cutting, heating and heat treating.

Hydraulic Back-Pressure Valve, Hydraulic Seal, Hydraulic Flash Arrester, Hydraulic Valve and Backflow Check Valve. Terms used interchangeably to mean a device designed and constructed to prevent a flash-back from reaching a fuel gas source such as a generator, manifold or cylinder and to prevent accidental mixing of fuel gas and oxygen by reverse flow.

Welder and Welding Operator. Any operator of electric or gas welding and cutting equipment.

NOTE: All other welding terms are used in accordance with American Welding Society Terms and Definitions-A3.0-1980.

NOTE: Authority cited: Section 142.3, Labor Code. Reference: Section 142.3, Labor Code.


1. Repealer and new section filed 5-16-75; effective thirtieth day thereafter (Register 75, No. 20).

2. Amendment filed 7-16-76; effective thirtieth day thereafter (Register 76, No. 29).

3. Repealer and new section filed 7-13-78; effective thirtieth day thereafter (Register 78, No. 28).

4. Amendment filed 6-12-87, operative 7-12-87 (Register 87, No. 26).

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