Contents 1 Features 2 Engine types 2.1 Type 3 2.2 Type 4 2.3 Type 5 2.4 Type 6 2.5 Type 7 - Prevention Module 3 NFPA 1906 4 References 5 External links

Features[edit] Wildland engines are traditionally smaller than standard fire engines and are primarily used for vegetation fires or wildland fires. They also respond to emergencies in the back country where traditional engines cannot respond. Most wildland engines feature four-wheel drive capability and can thus climb hills and make it through rough terrain. One of the features that makes these engines ideal for vegetation fires is that they can pump water while driving, whereas most, but not all traditional engines must be put into park to flow water, it depends on the specifications to which the Fire Department wants the vehicle to be built. This pump-and-roll feature allows the engines to make "running attacks" on vegetation fires, a tactic that can help minimize the rate of spread by having a firefighter walk the edge of a fire with a hose line and the engine trailing close behind.[4]

Engine types[edit] In the fall of 2007, the National Wildfire Coordinating Group agreed on a set of standards for all fire engines that are used for wildland firefighting. As structure engines are sometimes used on wildland fires, though primarily for structure protection, they are also included in the NWCG engine typing.[5] Per the standards there are 7 types of fire engines. Minimum Standards by Type[5] Engine Type Structure Wildland Requirements 1 2 3 4 5 6 7 Minimum tank capacity 300 US gal (1,100 L; 250 imp gal) 300 US gal (1,100 L; 250 imp gal) 500 US gal (1,900 L; 420 imp gal) 750 US gal (2,800 L; 620 imp gal) 400 US gal (1,500 L; 330 imp gal) 150 US gal (570 L; 120 imp gal) 50 US gal (190 L; 42 imp gal) Minimum flow rate USGPM (L/S IMPGPM) 1,000 (63; 830) 500 (32; 420) 150 (9.5; 120) 50 (3.2; 42) 50 (3.2; 42) 50 (3.2; 42) 10 (0.63; 8.3) Minimum pressure 150 psi (1,000 kPa) 150 psi (1,000 kPa) 250 psi (1,700 kPa) 100 psi (690 kPa) 100 psi (690 kPa) 100 psi (690 kPa) 100 psi (690 kPa) Hose types 2-​1⁄2" 1,200 ft (370 m) 1,000 ft (300 m) N/A N/A N/A N/A N/A 1-​1⁄2" 500 ft (150 m) 500 ft (150 m) 1,000 ft (300 m) 300 ft (91 m) 300 ft (91 m) 300 ft (91 m) N/A 1" N/A N/A 500 ft (150 m) 300 ft (91 m) 300 ft (91 m) 300 ft (91 m) 200 ft (61 m) Pump and Roll Sometimes Sometimes Type 3[edit] An example of a type 3 fire engine from the United States The Type 3 Engines traditionally have four-wheel drive to make driving over rough terrain easier, they can also be produced with standard rear wheel drive.[6] Additionally the cab can either be 2-door or 4-door holding up to five people, but no fewer than three.[7] Almost all Type 3s have 4 doors as a crew size of five is optimum. Type 3s are required to have a minimum of 500 US gallons (1,900 L; 420 imp gal) of water, and be able to pump 150 US gallons per minute (9.5 litres per second; 120 imperial gallons per minute) at a pressure of 250 pounds per square inch (1,700 kPa).[5] They have a typical GVWR of 26,000 pounds (12,000 kg).[8] The Type 3 is the most popular engine in California due to the easy road access of most fires. Type 4[edit] The Type 4 engine trades a smaller pump and less hose for a 50% larger tank. They are required to carry a minimum of 750 US gallons (2,800 L; 620 imp gal) of water, but only pump 50 US gallons per minute (3.2 litres per second; 42 imperial gallons per minute) at a pressure of 100 pounds per square inch (690 kPa).[5] The typical GVWR is at least 26,000 pounds (12,000 kg).[8] Type 5[edit] Type 5s are normally used as an initial attack engine atop a medium duty chassis. The GVWR of the chassis is around 20,000 pounds (9,100 kg).[8] Type 6[edit] A Type 6 Wildland Engine (Patrol 57) belonging to the Kern County Fire Department. Type 6 Engines are built on a pickup truck frame with a medium duty chassis giving a GVWR of 9,000–16,000 pounds (4,100–7,300 kg).[8] They are required to carry a minimum of 150 US gallons (570 L; 120 imp gal) of water, but only pump 50 US gallons per minute (3.2 litres per second; 42 imperial gallons per minute) at a pressure of 100 pounds per square inch (690 kPa).[5] In California these engines are staffed with one firefighter and used for patrols; for this reason the unit itself is sometimes called a patrol truck or simply "patrol".[9] Most other dispatch areas require the Type 6 to have a minimum of 3 personnel (required by NWCG policies), and is more popular outside of California due to its ability to go where other engines cannot. Type 7 - Prevention Module[edit] Type 7s are patrol vehicles with a small pump and tank. As a light duty vehicle, they are in the range of 6,500–10,000 pounds (2,900–4,500 kg) GVWR.[8] The vehicle has a small 50 US gallons (190 L; 42 imp gal) water tank and can pump 10 US gallons per minute (0.63 litres per second; 8.3 imperial gallons per minute) at a pressure of 100 pounds per square inch (690 kPa).[5] It is a multipurpose unit used for patrol, mop up, or initial attack.

NFPA 1906[edit] Additionally, there are requirements laid out by the National Fire Protection Association in NFPA 1906: Standard for Wildland Fire Apparatus.[10] Some of the many details of the NFPA 1906 include:[1] Stability: All vehicles must pass a 30° stability test. Roadability: Vehicles must be capable of operating on 20% grades and remain stationary on 10% grades. Carrying Capacity: The Standard lays out a detailed analysis of what the allowable additional weight is on top of the gross vehicle weight rating. This in critical to keep the vehicles from getting overweight. Pump-And-Roll: Vehicles must be able to deliver 20 GPM at 80 psi while moving at a speed of 2 mph

References[edit] ^ a b David, Haston. "NFPA 1906 and Wildland Apparatus Design" (PDF). US Forest Service. Retrieved 6 January 2014.  ^ Engine Boss, S-231. NWCG. 2004.  ^ Fire Fighter Training, S-130. NWCG. 2003.  ^ "Type 3 Engine" (PDF). Santa Barbara County Fire. Archived from the original (PDF) on 31 December 2013. Retrieved 30 December 2013.  ^ a b c d e f "Engine Types" (PDF). National Wildfire Coordinating Group. Archived from the original (PDF) on 1 May 2015. Retrieved 5 January 2014.  ^ "Wildland Type III". Ferrara Fire. Retrieved 15 January 2014.  ^ "Engines". National Park Service. Retrieved 15 January 2014.  ^ a b c d e "USDA Forest Service Wildland Fire Engine Guide" (PDF). United States Department of Agriculture. p. 4. Retrieved 15 January 2014.  ^ "Kern County Firefighters at station 72 receives(sic) brand-new equipment". 23 ABC News Bakersfield. Sep 1, 2017. Retrieved 2 September 2017.  ^ NFPA 1906: Standard for Wildland Fire Apparatus (2012 ed.), National Fire Protection Association 

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