What color bands must the last meter of piping be painted to distinguish between the vapor manifold and the cargo manifold?

The correct answer indicates that the last meter of piping must be painted with red, yellow, and red bands to clearly differentiate between the vapor manifold and the cargo manifold. This color-coding system is a vital safety measure to prevent confusion during cargo operations where the handling of flammable liquids and vapors is involved.

The use of red typically signifies the presence of flammable materials, aligning with the need to clearly mark the hazards associated with the cargo. The addition of yellow in the middle serves as a cautionary color, indicating a transition zone or the presence of a secondary process, in this case, the vapor handling.

This specific configuration ensures that personnel working at the site can quickly identify the purpose of each piping section, reducing the risk of incorrect connections or handling procedures that could lead to dangerous situations, including leaks, explosions, or other hazardous incidents. Such color-coding is part of regulatory requirements for safe operations in marine environments, emphasizing the importance of clear visual cues to ensure safety among crew members and the environment.