What is a primary concern when using a fog stream?

When using a fog stream, the primary concern revolves around the possibility of steam generation that can cause burns. Fog streams, which consist of small water droplets, are designed to create a wide coverage area and effectively cool hot environments. However, when these small droplets come into contact with hot surfaces or superheated air, they can rapidly turn into steam. This steam can create a dangerous environment for firefighters and can potentially lead to serious burn injuries if not managed properly.

The concern lies in the rapid change from water to steam, which expands and can scald anyone in close proximity to the steam generation area. It necessitates that firefighters be aware of their surroundings and the potential for steam burn hazards while using fog streams, especially in confined spaces or high-heat scenarios. This understanding of steam dynamics is crucial for maintaining safety during firefighting operations.