What equipment is used to check for leaks in oxyfuel systems?

The use of a soap solution is considered the standard method for checking for leaks in oxyfuel systems due to its effectiveness and ease of use. When applied to joints, fittings, and connections in the system, the soap solution creates bubbles at the site of any leak. The formation of bubbles indicates that gas is escaping, providing a clear visual indication of a leak's presence. This method is reliable, relatively inexpensive, and does not require sophisticated equipment, making it highly suitable for immediate field use.

In contrast, while a pressure gauge can measure system pressure and determine if it is at a safe level, it does not directly identify leaks. An oil-based lubricant might make connections easier to assemble and seal but can obscure any escaping gas, thus potentially masking leaks instead of detecting them. Digital sensors can be sophisticated tools for leak detection, but their application may not be as widespread in basic oxyfuel setups, especially in handling smaller leaks where a soap solution would suffice. Therefore, using a soap solution is the most straightforward and effective approach for leak detection in oxyfuel systems.