What color and lettering should elevated pressure piping labels use?

What color and lettering should elevated pressure piping labels use?

• A. Red with white lettering
• B. Yellow with black lettering
• C. Blue with white lettering
• D. Green with black lettering

Answer: (B)

Gas piping, including elevated pressure sections, uses a yellow label with black lettering. Yellow is the standard color used to identify gas lines, and black lettering provides strong contrast for readability in a variety of lighting conditions and environments. This combination helps ensure quick, accurate identification by installers, operators, and emergency responders, reducing the chance of mistaken handling of gas systems. Other color schemes are used for other systems (such as red for fire protection or green for certain utilities), so they don’t align with the NFPA 54 labeling conventions for gas piping.

Gas piping, including elevated pressure sections, uses a yellow label with black lettering. Yellow is the standard color used to identify gas lines, and black lettering provides strong contrast for readability in a variety of lighting conditions and environments. This combination helps ensure quick, accurate identification by installers, operators, and emergency responders, reducing the chance of mistaken handling of gas systems. Other color schemes are used for other systems (such as red for fire protection or green for certain utilities), so they don’t align with the NFPA 54 labeling conventions for gas piping.