Sunday, February 26, 2012

PG Update & More on “Wind Driven” fires


Update from statter911.com:

Word from the Medstar Burn Unit of the Washington Hospital Center is that Bladensburg VFD Firefighter Ethan Sorrell (21 years old) and Firefighter Kevin O'Toole (22 years old) remain in critical but stable condition. Sorrell has respiratory burns and O'Toole has second and third degree burns over 40% of his body.
As we reported earlier, O'Toole and Sorrell both requested that the annual Bladensburg VFD banquet on Saturday continue as planned. We are told that Firefighter O'Toole was able to visit the event via Skype.

Strong winds were gusting out of the west at the time — “up to 40, 45 mph,” said the chief. They were blowing directly at — and into — the burning basement, which had a west-facing door.

“As soon as the guys opened the front door and advanced, it blew from the basement, up the steps and right out the front door,” Bashoor said. “It was like a blowtorch coming up the steps and out the door.”

The entire incident — “from the time they were in the door until they were burned” — took eight seconds, the chief said.

The firefighters inside the house “did everything they were trained to do,” he said, but they were essentially defenseless.

“Without that wind, the hot air and gases would have been venting out of the rear of the house,” he said. “The current of air essentially produced a chimney right up the steps and out the front door.”



Our first concern is and must be the continued recovery of these young volunteer firefighters. Nothing below is intended as “second guessing” these firefighters or their brothers on scene at this fire. Having said that and while we await the official reports, the initial discussion leads us to believe that this was a “wind driven” fire event.

Wind driven fires used to be considered most hazardous in high rise structures and with good reason. Numerous firefighters in all areas of the country have been injured or killed when a combination of failed windows and an open apartment door have caused “blow torch” conditions in the public hallway.   

However, this incident as well as previous incidents in Houston, TX and Prince William County, VA have proven that high winds can be a hazard in any type of structure.

NIST Study & Report on Houston, TX 2009 incident (Just released last month): http://www.nist.gov/customcf/get_pdf.cfm?pub_id=909779

Prince William County LODD Report Presentation Video: http://firecritic.com/files/2010/04/LODD-Report-Video-Section-2.wmv

I recently attended a Haz Mat Operations level training class taught by Retired Toledo Chiefs Mark Hertzfeld and Dave Fought. They stressed the importance of knowing what the weather forecast and conditions are each day you’re going to work (EVERYDAY if you’re a Volunteer like me) 

This is so important not only for Haz Mat but for firefighting as well. If winds are gusting, you must be very cautious of how and when ventilation is applied to the fire building. Especially horizontal ventilation but it must be considered in vertical ventilation as well (as discussed in this Urban Firefighter Magazine article: (“To Lee or Not to Lee”) http://epaperflip.com/aglaia/viewerUF.aspx?docid=a9792599ba6f4b41877b0b169ec68c8b

Be aware of where the fire is and what will happen if a window on the windward side fails or is broken out. A 360 walkaround by the first arriving officer can help accomplish this.

Finally, be aware that opening a door must be considered as part of ventilation. Smoke, gases and flame will usually follow the path of least resistance. Be aware of what effect your actions for entry are having on both the fire and the building and be ready to change those tactics quickly if bad things start to happen.

Please continue to keep a good thought for these young firefighters who have a long road to recovery ahead of them.

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Remember, Safety and Aggression are not mutually exclusive...be a student of your craft...be smart and be safe.

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