How should relief valve vent lines be labeled when vented to the outside?

Relief valve vent lines must be labeled in a manner that clearly distinguishes them from the medical gas pipeline. This is crucial for ensuring the safety and proper operation of a medical gas system. If the vent lines are not marked distinctly, there is a risk that personnel might confuse them with active gas lines, leading to potential hazards such as improper venting or inadvertent interruptions to the medical gas supply.

The labeling should be durable and easy to read, so that it can withstand environmental factors when vented outdoors. This helps in maintaining safety protocols and ensuring that maintenance personnel can quickly identify the function and purpose of these lines. The emphasis on a labeling method that sets them apart ensures compliance with safety standards and enhances the overall reliability of the medical gas system.

Other methods of labeling, such as adhesive markers, stenciling, or stickers, could be acceptable but do not inherently ensure the distinction as effectively as the guideline suggesting any manner that distinctly identifies the vent lines.