Alan M. Petrillo
Developments in wildland urban interface (WUI) apparatus have taken a page from businesses that use customer satisfaction surveys and feedback, incorporating changes and modifications into rigs that firefighters and fire departments see as necessary to make their jobs easier and safer on the front lines of wildland fires.
Structure and Wildland Duties
Chad Trinkner, marketing manager of pumpers, fire suppression and aerial products for Pierce Manufacturing Inc., says that Pierce has seen an emphasis on maneuverable wildland units that can double as urban interface vehicles to fight structure fires or protect exposures when necessary. "Pierce makes Type I, II, and III urban interface and wildland vehicles on custom or commercial chassis," Trinkner says, "often customizing a vehicle to a very specific body design as we do for the Federal Bureau of Land Management (BLM)."
Trinkner notes that the BLM vehicle, called a Model 62, is a spinoff of the United States Forest Service's (USFS) Model 34 Type III wildland apparatus with its own body design that can hold a spare tire, a different pump capacity, and space "so the vehicle is prepped for everything, and the crew will be able to live out of the apparatus."
A Type III wildland apparatus typically carries 500 gallons of water, a pump with a minimum capacity of 150 gallons per minute (gpm), and 1,000 feet of 1½-inch and 500 feet of one-inch hose. "We've built Type III wildland vehicles with water tanks of up to 600 gallons and Type IV rigs with 750 gallons of water," Trinkner notes. Type IV apparatus have less hose and pump capacity requirements than Type IIIs.
Doug Kelley, wildland product manager for KME, says recent developments in pumps and in remote turrets have improved the performance of wildland vehicles. "The big thing that KME focuses on is pump-and-roll capability, where we have developed pumping systems with dual impellers and single manifolds that allow for low- and high-pressure systems," Kelley says. "We can get 100 gpm at 150 pounds per square inch (psi) at engine idle or, with a four-wheel-drive vehicle, can crawl along in low range and expend water and class A foam on a fire."
KME delivers that pump-and-roll capability chiefly through its Ridgerunner apparatus, designed as a WUI vehicle that can handle both structure and wildland fires. Ridgerunner is available on an International 7400 chassis and carries a Hale 1,500-gpm pump that provides 100 gpm at 150 psi for pump-and-roll situations, an 800-gallon Poly tank, a 20-gallon foam cell, and a FoamPro 2001 direct-injection foam system.
Scott Oyen, vice president of sales for Rosenbauer, says that urban interface pumpers meeting all the criteria as Type I units also can make effective wildland apparatus. "Those that meet the Type I, II, and III classifications might be able to get Insurance Services Organization (ISO) rating points for the fire department," he points out. "That's where our Timberwolf fits in, built on an International 4400 four-door 4x4 chassis with a 500-gpm Darley JSP fire pump, 500 gallons of water, extended front bumper with crosslay, remote bumper turret, high-pressure booster reels in the cab steps, and rescue tool storage.
|
(1) Pierce
Read more
- 984
- Article rating: No rating
Posted: Jul 8, 2013
By Chris Mc Loone
In late May, a Washington, D.C., ambulance shut down while transporting a gunshot victim. The ambulance operator was able to safely pull the vehicle over to the side of the road to await another unit to finish the transport to the hospital. Immediately prior to the engine failing, the operator noted a light had illuminated that indicated engine failure was imminent. News reports out of Washington, D.C., that week reported it was the emissions control system that caused the problem.
I wasn't convinced it was an emissions control problem. Although logically it made sense based on the vehicle's age, it just didn't figure to be the cause-unless regens weren't being performed. Unless there was something really wrong with system, the driver would have been signaled multiple times before the engine actually derated-IF everything was working properly. So I was disappointed that this looked like a case of not performing aftertreatment regeneration when prompted or that the emissions system was being made a scapegoat here.
A week after the incident, news arrived that the culprit was actually a faulty fuel cooler screen that caused the engine to shut down.
These 2010 engines have caused a good deal of consternation for fire departments all over the country. The Washington, D.C., Fire Department did the right thing and conducted an investigation into the incident and discovered the actual cause of the engine shutdown. However, remember to not let our general displeasure with EPA-compliant engines cause you to rush to judgment when an apparatus or ambulance experiences engine trouble. And, whatever you do, don't delay your regens unnecessarily. Legitimate problems with emissions control systems may occur, but do everything you can to ensure your operations are not the cause of the problems.
Technology and the Fire Service
The use of new technology within the fire service has come up in a number of my conversations recently. Topics ranged from how to use it, the cost of it, why the fire service embraces it or doesn't embrace it, and so on. There is any number of answers to any of those questions. Any time a product employing a new technology allows us to complete our tasks more safely and efficiently, it's a no-brainer, to me, to put it to use.
A case in point is a recent training night at which several line officers and firefighters got a chance to use a new hydraulic tool power unit. We all got a chance to use the new product, inspect it, and learn about it. The technology in this case was using a lithium ion battery as the unit's power source. The instructor began the conversation by stating that there is a great deal of fear out there regarding battery-operated tools. Many departments know firsthand how the NiCad batteries we had charging in our trucks connected to shorelines had dismally short life-spans. Lithium ion batteries, however, are a whole different game. Questions ranged from whether the tool would work slower as the battery strength diminished, what the overall lifetime of the battery is, how long we can work off the battery before the power unit shuts down, how many stages the pump has, and so on.
In one hour and seven minutes, we performed three door removals, one B-post removal, and a vertical displacement and removed the trunk lid for good measure. Our instructor also reviewed some new tactics for rescue scenarios.
Using a power unit with this technology to me is a no-brainer. It's quiet. There is no exhaust-which is good for the rescuer and the rescued. The truck's generator is not running, so it's not pumping out diesel exhaust into the air around the rescuers. No generator means no cord reels to trip over-health and safety are covered right off the bat. Powering up the unit is with the touch of a button. The rescuer literally picks it up with a tool and hydraulic hose and goes. There is no waiting for the gener
Read more
- 858
- Article rating: No rating
|