What method should be used to check for a leak around a fitting?

Using a leak detector solution is the most effective method to check for leaks around fittings. This solution typically contains soapy water that creates bubbles when it comes into contact with escaping gas. If leaks are present, the gas will escape through the fitting and cause the solution to bubble up, clearly indicating the specific location of the leak.

This method is not only effective but also safe, as it allows for the detection of leaks without the hazards associated with using open flames or relying solely on sensory methods, which can be less reliable. While visual inspection can sometimes reveal obvious leaks or damage, it does not always expose small leaks. Listening for sounds and smelling for propane are also methods that people might consider; however, these can be unreliable since not all leaks produce detectable sounds or odors, particularly in low concentrations. Thus, the use of a leak detector solution is a standardized and reliable approach in the industry for ensuring safety and compliance.