Questions and Answers
What is the primary function of the fog tip on TFD high rise nozzles?
How can a firefighter create a broken stream pattern resembling a medium fog using a solid bore nozzle?
What feature of TFD high rise nozzles allows for the extension of a hoseline in a high rise setting?
Which of the following statements about Elkhart Brass 'SM' nozzles is true?
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What is the expected output of a TFD high rise nozzle when used with a pump discharge pressure of 70 psi?
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What is a primary disadvantage of using a 3" line for firefighting?
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How does the flow from a RAM monitor compare to traditional handlines?
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Which application is NOT mentioned as a use for the 2" high rise hose?
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What is a key feature of the SM-30F nozzle when paired with high rise hose?
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What is one benefit of deploying a RAM monitor as part of a blitz attack?
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Why might a fire crew prefer to use a 2" high rise hose instead of a 3" line?
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What flow range can a 3" line provide?
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Which of the following statements about RAM monitors is true?
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What is the standard minimum flow rate when applying a master stream, excluding a RAM?
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Which of the following devices can be used with both a solid or fog tip?
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What is a primary function of a telesquirt apparatus?
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In which situation is it generally advised to apply master streams through roof openings?
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What is the main advantage of aiming master streams through windows and doors?
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What is the default mixing ratio for Class A foam concentrate used by TFD apparatus?
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Which is NOT a characteristic of Class A foam?
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What is the purpose of richening up Class A foam?
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Class B foam primarily relies on what mechanism to mitigate fire hazards?
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What is the correct mixing ratio for the Class B foam concentrate used by TFD for liquid fuels?
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Why is Mil-Spec AFFF foam not effective for off-airport fires?
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How much Class A foam concentrate can be added to a 500-gallon booster tank for overhaul?
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What type of foam is classified as 'Universal' foam?
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What is the primary way Class A foam extends its effectiveness during firefighting?
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How many gallons of Class A and Class B foam does a TFD engine with onboard foam typically carry?
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Which statement is true regarding the production of foam during firefighting?
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What is a crucial factor that companies must know regarding their foam apparatus?
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What is a key benefit of using Class A foam in firefighting scenarios?
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What is the maximum duration firefighters can use a 20-gallon tank with Class B foam at a flow rate of 100 GPM and 0.3% concentration?
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If an Incident Commander (IC) anticipates needing a significant amount of foam, what is the minimum quantity that should prompt a call for the TFD Foam Trailer?
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What is the expected operational time when using a 40-gallon tank with a Hydrofoam nozzle at 350 GPM and 3% foam concentration?
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Why should the IC consider calling for additional foam early in an incident?
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What is the GPM and duration for a handline using a 40-gallon tank with a 3% concentration of Class B foam?
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Study Notes
TFD High Rise Nozzles
- TFD high rise nozzles deliver high-flow solid streams from a 1½" preconnect, achieving 140-150 gpm with 200' of hose at 70-80 psi.
- A nozzle can produce a medium fog pattern by slightly closing the bail for increased stream turbulence.
- Elkhart Brass "SM" automatic fog nozzles maintain 100 psi to ensure consistent flow, offering 150 gpm at a minimum of 75 psi for pressure-reduced applications.
2" High Rise Hose
- Bundled and stored in high rise bags on TFD apparatus, the 2" high rise hose is versatile for various firefighting tasks beyond high rise operations.
- Can extend a 1½" preconnect, replace broken sections of hose, or create larger flow handlines with manageable weight.
3" Lines and Rapid Access Monitor (RAM)
- 3" lines provide flows of 210-350 gpm but lack mobility, making them difficult to move once charged.
- RAM monitors can connect to 3" preconnects and deliver flows up to 500 gpm, effective for both offensive and defensive applications during large fires.
TFD Master Streams
- Master streams require a minimum flow of 1000 gpm and include pre-piped deck guns, portable bases, and ladder pipes.
- Application techniques include attacking through roof openings or from windows aiming upward, facilitating effective fire control.
- Telesquirt apparatus allows for flexible positioning of master streams targeting ceilings.
Foam Fire Streams
- TFD engines carry 40 gallons each of Class A and Class B foam; Telesquirts carry 20 gallons.
- Familiarity with foam types and quantities is essential for effective firefighting.
Class A Foam
- Class A foams lower water surface tension, expanding to create foam for improved knockdown efficiency and reduced overhaul time.
- Electric foam systems default to 0.3% concentrate but can be adjusted for longer supply duration or stronger adhesion for exposure protection.
Class B Foam
- Class B AFFF/ATC foams specifically target flammable liquids, forming vapor-suppressing blankets for fire control, mixed at a 3% concentration.
- TFD uses "Universal" foam suitable for various liquid fuels.
Airport Apparatus Foam
- Mil-Spec AFFF is used on airport apparatus, tailored for aircraft fuels, making it unsuitable for over-the-road fuel fires.
Foam Resource Management
- For significant foam needs exceeding 80 gallons, incident command should request the TFD Foam Trailer, equipped with 750 gallons of foam.
- Sun Refinery serves as a foam staging area for additional support on large incidents requiring extensive foam application.
Foam Limitations
- Awareness of foam system limitations is crucial; early requests for additional foam can prevent resource burnout.
- Specific application rates reveal consumption times for both handlines and hydrofoam nozzles, highlighting the need for calculated foam usage.
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Description
Explore the technical specifications and functionality of TFD high rise nozzles as detailed in the Emergency Operating Guidelines. Learn about flow rates, hose specifications, and operational considerations for effective firefighting in high-rise scenarios.