What should never be used to check for gas leaks?

Using open flames or ignition sources to check for gas leaks is fundamentally dangerous and should never be done. When dealing with flammable gases, any open flame can ignite gas, potentially leading to an explosion or fire hazard. Safety protocols in the handling of LP gas emphasize the avoidance of any ignition sources in proximity to leaks, as even a small spark can result in catastrophic incidents, including injury or destruction of property.

In contrast, other methods, such as using a soap solution, electronic gas leak detectors, or visual inspections, are safe and effective ways to identify leaks without the risk that flames present. A soap solution can create visible bubbles where gas escapes, and electronic detectors can reliably sense the presence of gas without any risk of ignition. Visual inspections for frost on cylinders can indicate gas leaks, as escaping gas can cause surface temperatures to drop. These methods uphold safety standards and are endorsed for identifying leaks without danger.