Not just what and how, but why!
The seventh tactical implication identified in the Underwriters Laboratories study of the Impact of Ventilation on Fire Behavior in Legacy and Contemporary Residential Construction (Kerber, 2011) is the influence of changes in ventilation on flow path. “Every new ventilation opening provides a new flow path to the fire and vice versa. This could create very … Read more
The sixth tactical implication identified in the Underwriters Laboratories study of the Impact of Ventilation on Fire Behavior in Legacy and Contemporary Residential Construction (Kerber, 2011) identifies potential hazards and risks related to the tactic of Vent Enter Search (VES). Kerber (2011) provides a straightforward explanation of this tactic. It can be described as ventilating … Read more
The fifth tactical implication identified in the Underwriters Laboratories study of the Impact of Ventilation on Fire Behavior in Legacy and Contemporary Residential Construction (Kerber, 2011) is described as failure of the smoke layer to lift following horizontal natural ventilation and smoke tunneling and rapid air movement in through the front door. In the experiments … Read more
The fourth tactical implication identified in the Underwriters Laboratories study of the Impact of Ventilation on Fire Behavior in Legacy and Contemporary Residential Construction (Kerber, 2011) is that fire attack and (tactical) ventilation must be coordinated. This recommendation has been repeated in National Institute for Occupational Safety and Health (NIOSH) Death in the Line of … Read more
Developing and maintaining proficiency in reading the Fire using the B-SAHF (Building, Smoke, Air Track, Heat, and Flame) organizing scheme for fire behavior indicators, requires practice. This post provides an opportunity to exercise your skills using a video segment shot during a commercial fire. Residential Fire This post examines fire development during a residential fire … Read more
UL’s third tactical implication is that there may be little smoke showing when a fire initially enters the decay stage as a result of limited ventilation. These fire conditions may present similar indicators to an incipient fire. However, fire conditions and the hazards presented to firefighters are considerably different. Visible Indications of Fire Development In … Read more
A recent video posted on the firevideo.net [http://firecamera.net/] web brought to mind a number of painful lessons learned regarding live fire training in acquired structures. When watching video of fire training or emergency incidents, it is essential to remember that video provides only one view of the events. This video, titled Probationary Live House Burn … Read more
Is making entry with a hoseline for fire attack, ventilation? Is entering through a doorway when conducting search, ventilation? While many firefighters do not think about ventilation when performing these basic fireground tasks, the answer is a resounding yes! Making Entry is Ventilation While the Essentials of Firefighting (IFSTA, 2008) defines ventilation as “the systematic … Read more
UL Research on the Impact of Ventilation on Fire Behavior Earlier this year, Underwriters Laboratories (UL) conducted a series of full-scale experiments to determine the influence of ventilation on fire behavior in legacy and contemporary residential construction (see Did You Ever Wonder?). UL University recently released an excellent on-line training program based on this research. … Read more
There were multiple near miss incidents and injuries involving flashover during the month of December. These incidents point to the importance of understanding fire dynamics and reading the fire as part of initial size-up and ongoing dynamic risk assessment. Each member operating on the fireground must maintain a high level of situational awareness and communicate … Read more