What does the technique of 'penciling' involve in fire suppression?

The technique of 'penciling' in fire suppression involves utilizing a solid or straight stream of water aimed directly at burning fuels. This method is effective because it allows firefighters to apply water precisely to the source of the fire, thus maximizing the cooling effect on the combustible material. By directing the stream accurately, firefighters can effectively penetrate the fire and significantly reduce its intensity, as opposed to dispersing the water in a broader pattern that might not reach the flames effectively.

This approach can be particularly useful in situations where reaching the fire directly is possible, as it minimizes water waste and enhances the speed at which the fire is brought under control. The straight stream produced in penciling helps to ensure that the energy being directed is targeted, increasing the efficiency of the water application during firefighting efforts.