What action can firefighters take to lessen heat stress while wearing structural firefighting PPE?

Opening or removing protective clothing can indeed be an effective way for firefighters to manage heat stress while wearing structural firefighting personal protective equipment (PPE). When firefighters don their gear, it provides essential protection against heat, flames, and hazardous materials, but it can also significantly reduce heat dissipation from the body, leading to increased risk of heat-related illnesses.

By strategically opening or partially removing their gear when safe to do so, firefighters can allow heat to escape, facilitate airflow, and help regulate their body temperature. This action can help prevent overheating, which is crucial in maintaining optimal performance and safety in high-stress situations.

Proper hydration, while important, is more about prevention and maintenance rather than an immediate action to lessen heat stress when already in the PPE. Increasing work intensity or taking breaks in high-heat areas would further exacerbate the risk of heat stress rather than reduce it. Therefore, managing the PPE appropriately through opening or removing parts of it can be a practical solution for immediate relief from intense heat.