Saturday, July 22, 2023

It's (mostly) about the Nozzle

The Five Essential Funtions™that comprise the "engine" of the Firefighter Challenge have their origin in the original JTA (job task analysis) that I conducted as a part of our FEMA-funded research while a faculty member of the University of Maryland. 

The criteria for inclusion were: 1. Frequently Performed Tasks; 2. Arduous, and 3. Critical. Anything to do with hydraulics was axiomatically inclusive as an "Essential Function" of fire suppression. I knew from experience that with water weighing 8.3 pounds per gallon, moving supply or attack lines was hard work. 

We measured the physical requirements of moving an attack line to full extension (say 150 feet) in a drag would require an ability to pull ≈240 pounds (as measured by a dynamometer). But, you wanted to have some defining activity to validate that you were "there." Ergo: opening the bale and squirting some water defined the task. 

Nominally, for a straight bore nozzle, with 125psi, you get some kickback, so again, there's a built-in physical demand that requires a combination of dynamic and static strength. Getting up a good head of steam before the looped sections are pulled into the equation was an excellent way to keep up the momentum. 

Initially, we didn't have a target; that will come later. But, what to do with the nozzle once the task was accomplished? Squirt water. That's what. 

With the first Challenge event held at the University of Maryland's Fire Rescue Institute, we used appliances and hose provided by MFRI. The following year we began to assemble our own assets. At FDIC held in Cincinnatti, the representative of Akron demonstrated the ruggedness of their straight bore nozzle by spiking it on the concrete floor. He said, "you can do that all day long." I was impressed. 

In our first formative years, Task Force Tips (TFT) approached us and offered to become the "Official Nozzle" of the Challenge. Doug McMillian, brother of Stewart, had a pair of targets designed for our application. It had a strobe on top and a horn powered by a Scott air bottle that would sound when the guillotine fell. This ingenious design, weighing about 300 pounds, would have to be reduced in weight and complexity when used on tour. 

Doug wanted us to use their Automatic Nozzle; I suggested that this was the bridge too far in that I had been taught in basic school that you treated these appliances with care; not dropping them on the ground or using them for forcible entry. Our trademark, the "Hose Dragging Man," was a posterized image created by George Eade, our commercial artist, who designed the stylized and trademarked "Firefighter Challenge" with the Fruiter font. 

Not unexpectantly, the nozzles began to break. Doug asked that I explain to the Competitors that they had to gently place the nozzles on the ground before advancing. I said, "I'll be glad to explain that the TFT nozzles required special handling." He got it immediately and said, "We'll make them tougher." And he did. 

Shortly after this solution, Doug and Stewart had a falling out, and the sponsorship was collateral damage. 

Enter Elkhart Brass. Danny Brogden, who I had known prior to his becoming the marketing guy for Elkart. He proffered that their fog nozzle would be up to the Challenge. As you know, you can dial in a number of patterns, but he locked in the straight stream function. The nozzle came with a chrome bale. I said, "I think that's going to be a problem." He differed and as it turned out, was correct. 

Then came POK, a French manufacturer of a whole line of firefighting appliances. Jean-Marc Tassé was the North American marketing manager and wanted to make a statement about their presence in the business. So, POK paid for the 700-pound scoreboard and provided the smoothbore, straight stream nozzle that went into use for the next 20 years. 

The scoreboard, made by Colorado Timing, turned out to be an albatross. The display was better suited for indoor applications and was a constant headache requiring maintenance and power supply replacements. Jay Staeden, our then-Operations Manager, could be seen hanging from a rope with a broomstick in his hand, banging the back of the panels to get bulky displays to light up. Colorado Timing never completed the specifications and kept screaming to get paid. 

We ended up dumping off the whole pile of junk in their parking lot. But, true to his word, Jean-Marc continued to work on improving the nozzles. By rev 4.0, he had it mil-spec'd and nuclear-hardened. Until: 

When Jean-marc disappeared to Costa Rica, leaving the entire Maryland Warehouse on Maryland's Eastern Shore abandoned, we thought we might return to the original Akron Brass product. We purchased (against our religion) two of their straight bore nozzles and were sorely disappointed that they failed almost immediately. So, scratch that idea. 

Since we conducted a couple of events in Elkhart, IN, and they provided us with nozzles for that event, we thought exploring a partnership was worth pursuing. For WCXXX two beautiful nozzles were produced and put into service. Regrettably, they did not survive. 

We have made entreaties to POK through three emails, alerting them that the decision to go to a metal bale was a mistake. Of course, for the preponderance of fire fighting organizations, they never approach their end of life since no one abuses equipment like we do. In fact, we lay claim to being the "Aberdeen Proving Ground" of the fire service. If you want to have your stuff tested, we run "Four Alarm Fires" every weekend. 

The clear value to any company that wishes to associate their equipment with the very rugged nature of the Challenge is an imprimatur. 

While in Fort Pierce, Captain-Paramedic John Tillett (ret) pointed out to me the major differences between the POK product and what Elkhart had produced. The POK nozzle is machined from a solid block of a metal composite. The handle is a brass frame, covered by a rubberized material and secured with taps, drilled into the body. 

One note: way back, Clint Lamb and I got the idea of inserting a quarter-inch washer into the smooth bore of the nozzle. This reduced the flow, since we have a finite amount of water (250gal) onboard our Semi trailer. 

The really fast guys can knock down the target with as little as a liter of water. 

So, what's next? 

If we can't find a suitable replacement to the handle issues on the POK nozzle, we may be forced to add a requirement that after knocking the target down, the nozzle has to be hung on a hook. I know that there will be push-back since this added step will take additional time. But, we simply can't be at the mercy of equipment that is no longer up to the Challenge. 

Parenthetically, I must mention that while in Paris, a few years back, POK funded my trip to their factory at Nogent-sur-Seine. I was very impressed with their operations and their CEO Dr. Alexandra Grandpierre. 




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