To limit the probability that smoke will spread through grilles, louvres or other openings in the fire separations into the corridor, which could lead to patients and emergency responders being exposed to hazardous conditions, which could lead to harm to persons, including emergency responders.
To limit the probability that smoke will spread through grilles, louvres or other openings in the fire separations into the corridor, which could lead to emergency responders being exposed to hazardous conditions, which could lead to fire emergency response operations being delayed or ineffective, which could lead to delays in the evacuation or movement of persons to a safe place, which could lead to harm to persons, including emergency responders.