What is the recommended action regarding fireline in relation to chutes or chimneys?

The recommended action regarding fireline in relation to chutes or chimneys is that it should not lie in or adjacent to them. This is primarily because chutes and chimneys can greatly influence fire behavior. These structures can accelerate the movement of fire and smoke, making them more intense and unpredictable. If a fireline is placed adjacent to or in them, it can create serious safety risks for firefighters and negatively impact the effectiveness of the fire control efforts.

Chutes and chimneys often funnel heat and flames upward, and positioning firelines near these areas can expose firefighters to extreme conditions and increase the chances of fire overrunning the line. Therefore, maintaining a safe distance from these features is crucial to ensure the safety of personnel and the success of fire suppression strategies.

By keeping firelines away from chutes or chimneys, it allows for safer conditions to manage the fire and reduces the risk of rapid fire spread through these vertical pathways.