This testing was conducted in July 2010 by a consortium of fire service and fire equipment instructors that were conducting CAFS training as part of the 81st annual Summer Municipal Fire School . This class is a portion of the Advanced Municipal Fire Operations courses presented at Texas A & M Universities “Brayton Fire Field” in College Station, Texas. The school is administered by the Texas Engineering Extension Service (TEEX) which conducts emergency services training year round and is known as one of the best worldwide.

The data gathered in the live fire testing bears witness to and reinforces the lessons learned over several decades of Class “A” and Compressed Air Foam System (CAFS) fire fighting. The numbers compiled in these tests once again demonstrate definitively that Class “A” foam solution performs better than plain water and CAFS performs far superior to both solution and plain water applications in fire fighting. This validates the data acquired in many previous tests including the Salem Tests and the widely acknowledged Palmdale Burns.

Questions or comments regarding this research may be posted to the website.

  Suppression Method Water Only   Class A Foam Only   CAFS Only   ***
Ceiling Temperature at Beginning of Application (Degrees F)  600   600    600   
Ceiling Temperature After Interior Corner Application
(Degrees F)
 500   500    400   
Knock Down Time to Achieve Knockdown  8 seconds   7 seconds    3.5 seconds   
Ceiling Temperature After Knockdown (degrees F)  500   400    300   
Gallons Used to Knockdown   8     3.5   
Class A Foam %  N/A   0.5    0.5  0.3
Onces of Concentrate  N/A    4.48   2.24  1.33
Mop Up Time to Achieve Mop Up 35.6 seconds (then rekindled)    16 seconds    8.5 seconds  
Ceiling Temperature Immediately After Mop Up 400   250    200   
Gallons Used to Mop Up 35 (didn’t extinguish)   16    8.5   
Ounces of Concentrate  N/A   10.24    5.44   2.07
Totals Total Gallons Flowed 43    23   12  
Total Ounces of Concentrate N/A    14.72    7.68   2.9

*** Shows total foam concentrate that would have been used if the % was .03.

Shaped tip 1 1/8″ ID on CAFS line
Saberjet Nozzle for water and Class A Foam attack lines
60 GPM Flow
Straight-Stream application into interior corner
Straight-Stream application into the center of the fuel load
Pallets and hay were used for fuel
Complicating the Knockdown and Mop-up was that the application was from a distance and only from one side.