Field welding on propane containers is limited to attachments on which parts?

Field welding on propane containers is permitted exclusively on non-pressure parts because these areas do not directly contribute to the structural integrity of the container under pressure. Non-pressure components are those that do not contain or support the liquid propane, thereby minimizing potential risks and hazards associated with welding, such as structural failure or leaks.

In contrast, pressure parts, such as the vessel walls or attachments that are integral to maintaining the pressure within the container, should never be welded in the field. Doing so could compromise the safety of the container, leading to dangerous outcomes. Safety valves are critical safety devices that must not be tampered with through welding, as preserving their function is vital to the safe operation of the propane system. Support brackets might seem less critical at first glance, but if they are classified as pressure-bearing components, welding them in the field could again pose a risk to the overall integrity of the container.

Understanding these distinctions underscores the importance of adhering to safety regulations when working with propane containers, especially concerning welding practices.