What is the primary precaution to take before lighting a gas fire?

The primary precaution to take before lighting a gas fire is to check for visible leaks in the gas line. This step is crucial because gas leaks can lead to dangerous situations, including explosions and fires. Ensuring that there are no leaks helps to create a safe environment for lighting the fire, as even a small amount of gas escaping can create a serious safety hazard.

Recognizing leaks before igniting the gas is fundamental because it addresses the immediate risk associated with gas. If a leak is detected, appropriate measures should be taken to repair it before proceeding. Safety must be the top priority when working with gas, making the verification of leak integrity a vital preliminary step.