What is an acceptable method of verifying gas leaks in a piping system?

The soap solution method is an acceptable and widely used technique for verifying gas leaks in a piping system due to its simplicity and effectiveness. When a soap solution is applied to the surfaces of the joints and fittings in the gas piping system, any leaks will cause the soap solution to bubble or foam, indicating the presence of gas. This method is practical because it can be performed visually, allowing a quick and immediate assessment of whether there is a leak.

While there are other methods like ultrasonic testing, pressure decay testing, and gas chromatography, they might be more complex, costly, or require specialized equipment and expertise, making them less practical for routine leak detection in many situations. The soap solution method is accessible and straightforward, allowing anyone responsible for maintenance or safety checks to readily identify leaks without the need for advanced technology.