Which standard governs CO2 warning signage?

Which standard governs CO2 warning signage?

• A. NFPA 12 2018
• B. ANSI Z535.2
• C. NFPA 2001 2018
• D. OSHA 29 CFR 1910.145

Answer: (B)

CO2 warning signage is governed by ANSI Z535.2, which defines how environmental health and safety signs should look, including the proper header (such as Warning), the symbol, colors, and wording. This standard ensures a CO2 hazard sign is immediately recognizable and communicates the level of risk and the required actions clearly. The other standards relate to the systems themselves (for example, CO2 extinguishing or clean agent systems) or to general OSHA signage requirements, not the specific design and formatting of hazard signs.

CO2 warning signage is governed by ANSI Z535.2, which defines how environmental health and safety signs should look, including the proper header (such as Warning), the symbol, colors, and wording. This standard ensures a CO2 hazard sign is immediately recognizable and communicates the level of risk and the required actions clearly. The other standards relate to the systems themselves (for example, CO2 extinguishing or clean agent systems) or to general OSHA signage requirements, not the specific design and formatting of hazard signs.