Which hazard can occur from improper ventilation techniques during a fire?

Improper ventilation techniques during a fire can lead to a backdraft, which is a dangerous condition that occurs when an influx of oxygen is suddenly introduced into a confined space filled with hot, combustible gases that have yet to ignite.

When a fire smolders and is deprived of adequate oxygen, it generates a large amount of flammable gases. If ventilation is not properly controlled, such as by creating an opening that allows a sudden rush of oxygen into the area, these gases can ignite explosively. This phenomenon is characterized by a sudden and violent explosion of flames, which can pose a serious risk to firefighters and anyone else in the vicinity.

Understanding this hazard highlights the importance of following established ventilation procedures to ensure safety during firefighting operations. Properly executed ventilation can help control the fire's behavior by releasing smoke and heat while minimizing the risk of conditions that could lead to a backdraft.