What is one of the initial "make safe" actions to take upon discovering a gas leak?

Ventilating the area is a crucial initial action to take upon discovering a gas leak because it helps to disperse the gas concentration in the air, reducing the risk of a fire or explosion. Gas leaks can create hazardous conditions, particularly if the gas is accumulating in enclosed spaces, where the potential for ignition increases significantly. By bringing fresh air into the area, the likelihood of reaching an explosive limit is diminished.

In addition to this, proper ventilation aids in safeguarding people in the vicinity by allowing them to breathe cleaner air and reducing the overall concentration of gas in the environment. This action is fundamental before any further steps are considered, such as evacuation or contacting emergency services, ensuring that the area is as safe as possible during the immediate response to the leak.