Which of the following is a common safety concern when working with gas appliances?

Inadequate ventilation in the work area when working with gas appliances presents a significant safety concern because proper airflow is crucial for preventing the accumulation of harmful gases, such as carbon monoxide. Gas appliances consume oxygen during combustion, and if ventilation is insufficient, it can lead to incomplete combustion and the release of toxic gases that can be hazardous to health. Ensuring adequate ventilation helps to maintain a safe environment by allowing fresh air to enter and enabling the safe dispersal of any combustion byproducts.

In contrast, while excessive noise, insufficient lighting, and overheating of nearby surfaces can present issues, they do not pose the same direct and serious health risks associated with gas appliances. For instance, excessive noise may indicate a mechanical issue but generally does not lead to immediate danger. Similarly, while inadequate lighting may hinder safe operation or maintenance, it does not directly affect the safety associated with gas combustion. Overheating of nearby surfaces is a concern for material safety and appliance function but is not as critical as ensuring proper ventilation to prevent harmful gas buildup. Comprehensive training in gas appliance safety emphasizes the importance of ventilation to mitigate these life-threatening risks.