NIST GOES BACK TO SCHOOL: Just in time for Fall, NIST evaluates positive pressure ventilation tactics in a retired high school

摘要

During the past six years, the National Institute of Standards and Technology (NIST) has conducted numerous experiments examining the effectiveness of positive pressure ventilation (PPV) for the fire service. As a tactic, fire departments frequently rely on PPV to ventilate a structure after extinguishing a fire, allowing them to complete salvage and overhaul operations in a less hazardous atmosphere. PPV has also been used during fire suppression operations to increase visibility and force heat away from the attack team as they locate the blaze. While PPV has been implemented with some success, however, using it also comes with some difficulties.