Not just what and how, but why!
CFBT-US has just taken delivery of two Low Pressure Fognails manufactured by Waterfog AB, in Sweden. Fognails are small piercing nozzles with a flow rate of 70 lpm at 8 bar (18.49 gpm at 116 psi). Low Pressure Fognails have a maximum working pressure of 20 bar (290 psi) which will allow operation at pressures … Read more
Each of the UL ventilation studies has generated a list of tactical considerations, many of which overlap or reinforce one another. It is useful to revisit the tactical considerations developed in the horizontal ventilation study and to integrate these with those resulting from the vertical ventilation research project. Download the Tactical Integration Poster as an … Read more
A pre-arrival video of a July 23, 2013 residential fire posted on YouTube illustrates the impact of ventilation (making an entry opening) in advance of having a hoseline in place to initiate fire attack. The outcome of increased ventilation mirrors the full scale fire tests conducted by Underwriters Laboratories (UL) during their Horizontal Ventilation Study … Read more
The last several weeks have brought a number of interesting things in the area of fire dynamics and firefighting operations. Before getting back to the question of Door Control Doctrine, take a few minutes to have a look at the ALIVE on-line interactive training program by the NYU Poly Fire Research Group and the recently … Read more
Jason Sowders recently wrote an post on the Fire Engineering in support 150 gpm (570 lpm) as the minimum flow rate for interior structural firefighting and the use of solid (or if not solid, at least straight) streams for interior fire attack. I commented on-line that many of the conclusions stated in Jason’s post was … Read more
Captain Mike Sullivan with the Mississauga Ontario Fire Department and I are continuing our dialog with another series of questions related to the science behind fire attack and fire control methods. Mike’s next several question deal with gas and surface cooling. I know the best way to extinguish a fire is to put water on … Read more
This post continues the discussion with Captain Mike Sullivan with the Mississauga Ontario Fire Department regarding fire attack methods. Captain Sullivan refined his definitions and explanation of direct, indirect, and combination fire attack, stating: Direct Attack: Water droplets put out the fire (droplets land directly on the burning fuel and cool this fuel to put … Read more
As I was beginning work on a post focusing on fire attack methods and fire stream effectiveness, I received an e-mail from Captain Mike Sullivan with the Mississauga Ontario Fire Department asking for help in clarifying indirect and combination fire attack methods and their impact on the fire environment. Mike is particularly interested in how … 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
A number of years ago, several nozzle manufacturers developed a break apart combination nozzle (shutoff separate from the tip) with an integrated solid stream tip. This design allowed the user to adjust the pattern using the combination tip, or if desired, remove the combination tip and use the nozzle to develop a solid stream. Good … Read more