What would be the minimum distance to an ignition source when purging a #20 propane cylinder?

The minimum distance to an ignition source when purging a #20 propane cylinder is set at 25 feet. This requirement is in place to ensure safety during the purging process, as propane is highly flammable and can form explosive mixtures in the air. Maintaining a distance of 25 feet from any potential source of ignition, such as open flames, sparks, or electrical equipment, minimizes the risk of a fire or explosion during the release of propane vapors.

In practical applications, it is essential for technicians to adhere to this guideline to create a safe working environment. This standard reduces the likelihood of ignition from sources that may not be immediately visible or recognized as hazardous. Furthermore, the requirement emphasizes the importance of being cautious and prepared when handling pressurized gas cylinders.