In the event of a gas leak, what is the first action that should be taken?

In the event of a gas leak, the priority must always be the safety of individuals in the vicinity. Evacuating the area is the most immediate and critical action to take because it minimizes the risk of exposure to hazardous gases that can lead to serious injury or fatality. Ensuring that safety measures are activated further protects those affected by sealing off the area and preventing additional people from entering, thereby containing the risk.

While notifying maintenance staff is a necessary subsequent step, it should not take precedence over the immediate actions required to safeguard individuals. Returning to work before ensuring the area is secure is dangerous and counters safety protocols. Checking gas levels in the system can also provide valuable information but is not a first step since ensuring a safe environment takes priority over diagnostics. The focus in such emergencies should always be on evacuation and securing safety first.