New Engine ops
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Questions and Answers

What is the primary benefit of using the 904K piercing nozzle for confined space fires?

  • Can safely extinguish fires with limited structural damage (correct)
  • Has a fixed steam capability that cannot be adjusted
  • Requires extensive training to operate effectively
  • Increases structural damage due to its large opening

    • Which of the following statements about the Elkhart Brass model is true?

  • It covers a wider area than the Akron Brass model when flowing.
  • It has a chrome plated finish and weighs 10 lbs.
  • It can flow 340 GPM at 50 PSI and 495 GPM at 100 PSI. (correct)
  • It features nine orifices ranging in size from .5” to .625”.

    • Which diameter of the area does the Akron Brass model cover while flowing?

  • 36 feet
  • 14 feet (correct)
  • 25 feet
  • 20 feet

    • What potential hazard may arise when using the 904K nozzle in confined spaces?

    <p>Smoke explosions from introducing fresh air</p> Signup and view all the answers

    What is the maximum pressure and flow rate for the 904K piercing nozzle?

    <p>100 PSI and 175 GPM</p> Signup and view all the answers

    Which feature of the 904K nozzle helps it penetrate surfaces for fire fighting?

    <p>A replaceable hardened steel tip</p> Signup and view all the answers

    What should be done before placing the nozzle in service?

    <p>Check for any obvious damages and cleanliness.</p> Signup and view all the answers

    What is one of the main drawbacks of using the 904K piercing nozzle?

    <p>Limited reach during operation.</p> Signup and view all the answers

    Which application is NOT suitable for the Akron Brass model?

    <p>Wide-open field fires</p> Signup and view all the answers

    What is the recommended penetration depth for the 904K nozzle to achieve full performance?

    <p>3.75 inches</p> Signup and view all the answers

    What is a fundamental disadvantage of using direct attack methods in firefighting?

    <p>It may conduct electricity and is not Class C compatible.</p> Signup and view all the answers

    How does the R.A.M.XD maintain stability during operation?

    <p>It harnesses the reaction force to stabilize the monitor.</p> Signup and view all the answers

    What is the maximum operating pressure for the R.A.M.XD?

    <p>150 psi</p> Signup and view all the answers

    At what flow rate does the hydraulic effect of the RAM XD's safety system activate?

    <p>350 GPM</p> Signup and view all the answers

    Which of the following tips provides the highest GPM at 80 psi nozzle pressure with the MQA?

    <p>1-3/8” tip</p> Signup and view all the answers

    What is the primary function of the locking pin in the R.A.M.XD?

    <p>To prevent accidental opening of the valve.</p> Signup and view all the answers

    When using the MQA, which statement is true regarding the use of the 1” tip?

    <p>It is generally avoided due to no GPM advantage.</p> Signup and view all the answers

    How much friction loss occurs at 500 GPM through the MQA?

    <p>6 PSI</p> Signup and view all the answers

    What is the operational limit for hose connection at the end of the MQA?

    <p>1-3/4” hoseline for connecting beyond the MQA</p> Signup and view all the answers

    What should be ensured to achieve optimal flow with the R.A.M.XD?

    <p>There should be at least 20 feet of hose in a straight line behind.</p> Signup and view all the answers

    What is the maximum effective range of the water can known as the Amerex 240 H?

    <p>44-55 feet</p> Signup and view all the answers

    Which UL rating indicates the effectiveness of the dry chemical extinguisher equivalent to water?

    <p>10-A:60-B:C</p> Signup and view all the answers

    What is the weight of the dry chemical extinguisher when fully loaded?

    <p>17 lbs.</p> Signup and view all the answers

    Which extinguisher is specifically noted for leaving no residue behind and is ideal for sensitive equipment?

    <p>CO2 extinguisher</p> Signup and view all the answers

    How long is the discharge time for the CO2 extinguisher model Badger B10V-1?

    <p>10 seconds</p> Signup and view all the answers

    What is the maximum effective range of the Ansul Sentry 10 dry chemical extinguisher?

    <p>19 feet</p> Signup and view all the answers

    Which material construction is used for the water can model Amerex 240 H?

    <p>Polished stainless steel</p> Signup and view all the answers

    What should be done to the water can immediately after it is discharged?

    <p>It should be filled.</p> Signup and view all the answers

    What potential risk does the dry chemical extinguisher powder pose in small or contained areas?

    <p>It is an irritant.</p> Signup and view all the answers

    How frequently should extinguishers be inspected?

    <p>Yearly</p> Signup and view all the answers

    What is the purpose of rinsing the extinguisher with clean water before filling it?

    <p>To prevent excessive foaming during filling</p> Signup and view all the answers

    What should be done to verify the water level in the extinguisher during inspection?

    <p>Weigh the extinguisher</p> Signup and view all the answers

    What is a critical step to avoid damaging the valve assembly when replacing the collar?

    <p>Make sure it is hand tight only</p> Signup and view all the answers

    What can cause the valve assembly to fail during pressurization?

    <p>Over pressurizing the extinguisher</p> Signup and view all the answers

    Which method is recommended for depressurizing the extinguisher before maintenance?

    <p>Discharging air and contents through the handle</p> Signup and view all the answers

    What is the recommended procedure for adding the additive to the extinguisher after filling it?

    <p>Introduce the additive after filling with water</p> Signup and view all the answers

    What special consideration should firefighters have when using the Badger WP-61 extinguisher?

    <p>It must be held securely during the filling process</p> Signup and view all the answers

    What is a potential risk of solely relying on the pressure gauge during daily inspections?

    <p>It does not indicate the actual weight of the extinguisher</p> Signup and view all the answers

    What should be the maximum reading on the pressure gauge when pressurizing the extinguisher?

    <p>100 psi</p> Signup and view all the answers

    Which of the following statements accurately describes the filling process?

    <p>The fill tube should be removed after adding the additive</p> Signup and view all the answers

    What is the recommended application rate for polar solvents when using foam?

    <p>6%</p> Signup and view all the answers

    What is a common cause of eductor failure in foam operations?

    <p>Kinks in the hose line</p> Signup and view all the answers

    Which statement about Class B foam application is correct?

    <p>The recommended application rate for hydrocarbons is 3%.</p> Signup and view all the answers

    What is the minimum pressure required for the PRO/Pak foam system?

    <p>40 PSI</p> Signup and view all the answers

    Which component of the Task Force Tip PRO/PAK allows for flow control adjustments?

    <p>Percentage Knob</p> Signup and view all the answers

    For ordinary combustible materials, what is the recommended foam application percentage?

    <p>0.1% – 1%</p> Signup and view all the answers

    What is the maximum pressure that the PRO/Pak foam system can handle?

    <p>500 PSI</p> Signup and view all the answers

    What effect do hydrocarbons have when spilled on water?

    <p>They float on top.</p> Signup and view all the answers

    Which issue is most likely to cause low pressure at the eductor in foam systems?

    <p>Excessive hose length</p> Signup and view all the answers

    What is the shelf life of CFD foam when stored correctly?

    <p>Nearly unlimited</p> Signup and view all the answers

    What is the correct percentage knob setting for polar solvents when using PRO/PAK ASSEMBLY?

    <p>6%</p> Signup and view all the answers

    Which nozzle should be used with a 125 GPM eductor?

    <p>SM20-FLP nozzle</p> Signup and view all the answers

    What is the maximum length of 1 ¾” hose that can be used between the 95 GPM eductor and the nozzle?

    <p>400’</p> Signup and view all the answers

    What is the required pump pressure at the eductor for proper operation?

    <p>200 PSI</p> Signup and view all the answers

    Which of the following foam percentage ranges is recommended for Class A operations?

    <p>0.1% – 1%</p> Signup and view all the answers

    What type of materials is the Class A use of foam concentrate specifically designed to combat?

    <p>Ordinary combustibles</p> Signup and view all the answers

    What should be done with the nozzle after cleaning the PRO/PAK ASSEMBLY?

    <p>Store it in a dry place.</p> Signup and view all the answers

    How should the flow control valve be adjusted after use of the PRO/PAK ASSEMBLY?

    <p>Until a trickle of clean water flows.</p> Signup and view all the answers

    When using hydrocarbons as fuels, what is the recommended percentage knob setting?

    <p>3%</p> Signup and view all the answers

    What is essential to check before placing the eductor into operation?

    <p>Eductor and nozzle compatibility</p> Signup and view all the answers

    During freeway runs, which of the following actions can help minimize risks to firefighters?

    <p>Positioning the engine behind an accident to act as a blocker</p> Signup and view all the answers

    What is a critical factor impacting the placement of fire apparatus on highways?

    <p>The speed at which vehicles commonly travel</p> Signup and view all the answers

    What position might provide greater safety for the pump operator during freeway runs?

    <p>Taking a safe position ahead of the scene</p> Signup and view all the answers

    Which of the following describes the role of freeway assistance vehicles?

    <p>They block traffic and support firefighting efforts.</p> Signup and view all the answers

    What should be done with the engine after it has positioned for a freeway incident?

    <p>Leave it in place until the accident scene is secured.</p> Signup and view all the answers

    What potential issue can arise from improper parking of rescue vehicles at accident scenes?

    <p>It increases the exposure of firefighters to traffic.</p> Signup and view all the answers

    Which factor can create additional hazards on smaller roads compared to freeways?

    <p>Traffic moving in different directions and speeds.</p> Signup and view all the answers

    Why is it important to have good radio communications during a freeway run?

    <p>To improve the efficiency and safety of the search for the wreck.</p> Signup and view all the answers

    Which type of vehicle can be utilized as a protective barrier at an accident scene?

    <p>Semi truck or large vehicles</p> Signup and view all the answers

    What might contribute to a driver not responding in time at accident scenes?

    <p>Mechanical issues with their vehicle</p> Signup and view all the answers

    What is the primary concern for firefighters operating around moving traffic at an accident scene?

    <p>Avoiding injuries from distracted drivers</p> Signup and view all the answers

    Which of the following is a consideration in the size-up process for accident responses?

    <p>The time of day and visibility conditions</p> Signup and view all the answers

    What is the main goal of law enforcement at an auto accident scene on the freeway?

    <p>To minimize travel disruptions for other drivers</p> Signup and view all the answers

    Why is a median potentially unsafe for emergency operations during slick conditions?

    <p>Traffic may still move dangerously close to personnel</p> Signup and view all the answers

    What is the recommended approach for positioning apparatus at an accident scene?

    <p>Use larger trucks as barriers to protect personnel</p> Signup and view all the answers

    What condition can lead to increased stopping distances for vehicles on the road?

    <p>Slick weather conditions</p> Signup and view all the answers

    What is a significant psychological barrier for firefighters when encountering moving traffic?

    <p>Discomfort while treating patients in dangerous environments</p> Signup and view all the answers

    What is the first priority for emergency crews at an accident before moving involved vehicles?

    <p>Conducting size-up and triage as needed</p> Signup and view all the answers

    Which aspect of road conditions can exacerbate the challenges for emergency responders at accident scenes?

    <p>Variable weather conditions impacting visibility</p> Signup and view all the answers

    What is one of the psychological challenges that firefighters face when responding to vehicle accidents?

    <p>Feeling overwhelmed by the volume of injured parties</p> Signup and view all the answers

    What is the nozzle pressure required for smooth bore hand line nozzles to achieve the designed flow?

    <p>50 PSI</p> Signup and view all the answers

    What is the primary feature that differentiates the Chief XD nozzles from the Elkhart Chief nozzles?

    <p>Laser etched labeling</p> Signup and view all the answers

    According to the Freeman Principle, what should be the maximum diameter of the nozzle orifice in relation to the hose diameter?

    <p>Not greater than half the hose diameter</p> Signup and view all the answers

    What flow rate is targeted for initial interior residential attack lines?

    <p>150 GPM</p> Signup and view all the answers

    How does increased water flow through a hand line affect nozzle reaction?

    <p>Increases nozzle reaction</p> Signup and view all the answers

    What configuration do most Elkhart Chief nozzles feature regarding shutoff construction?

    <p>Standard double cut ball shutoff</p> Signup and view all the answers

    What is the consequence of not pumping nozzles at appropriate pressures?

    <p>Improper discharge pattern</p> Signup and view all the answers

    Which statement accurately describes the internal shutoff feature of the Chief XD nozzle?

    <p>1 ¾ inch internal shutoff</p> Signup and view all the answers

    What measurement is used to determine nozzle reaction in firefighting?

    <p>Force in pounds</p> Signup and view all the answers

    What should be maintained to achieve adequate reach and penetration for fire attacks?

    <p>Appropriate pumping pressures</p> Signup and view all the answers

    What is the primary consequence of improper pumping of a hand line?

    <p>Altered flow rate and nozzle reaction</p> Signup and view all the answers

    Which tip size of a smooth bore nozzle produces the highest water flow at 50 PSI?

    <p>1 3/16” Tip</p> Signup and view all the answers

    What characteristic of the SM20-FLP/SELECT-O-MATIC nozzle affects the relationship between nozzle pressure and flow?

    <p>Exponential growth with increased pressure</p> Signup and view all the answers

    What material is primarily used in the construction of the newer style 2 ½” Elkhart Brass XD shutoff?

    <p>Forged aluminum</p> Signup and view all the answers

    Which of the following statements is true regarding pumping trash lines at higher pressures?

    <p>It results in excessive workloads on operating crews.</p> Signup and view all the answers

    Which option describes the flow rate and nozzle reaction for the 1 1/4” tip at 50 PSI?

    <p>328 GPM, 121 lbs</p> Signup and view all the answers

    What is a significant challenge when using the 1 3/16” tip at various pressures?

    <p>Calibrating GPM output with pressure</p> Signup and view all the answers

    Which class of nozzles is designed to have pressure operated features that vary based on the year of engine purchase?

    <p>Combination nozzles</p> Signup and view all the answers

    What function does the orange urethane molded bumper serve in the Elkhart Brass nozzles?

    <p>Protects the nozzle threads</p> Signup and view all the answers

    What is the primary reason to avoid pumping trash lines at excessively high pressures?

    <p>It leads to high workloads on operating crews.</p> Signup and view all the answers

    What should be done with excess lubricant on nozzle parts?

    <p>Clean it off to avoid attracting dirt and grit.</p> Signup and view all the answers

    What is the primary responsibility of the Attack firefighter?

    <p>To bring the first 50’ coupling to the door and create workable hose.</p> Signup and view all the answers

    What action should be taken if basic nozzle maintenance does not resolve issues?

    <p>Refer to a senior engineer for guidance.</p> Signup and view all the answers

    During hose advancement, what phrase indicates the nozzle firefighter is about to apply water?

    <p>Fire Room.</p> Signup and view all the answers

    What is crucial when advancing the hose line according to the training?

    <p>Teamwork and communication are essential.</p> Signup and view all the answers

    What should the Attack firefighter assess before entering the structure?

    <p>Nozzle and attack package for reach, pressure, penetration, and readiness.</p> Signup and view all the answers

    In hose deployment, what does the phrase 'I Need ___ Feet' specify?

    <p>The distance needed to reach a certain point.</p> Signup and view all the answers

    What maintenance method is suggested for cleaning the ball bearings?

    <p>Using Simple Green after removing them carefully.</p> Signup and view all the answers

    What is the core principle conveyed through hose advancement training?

    <p>Patience and good pacing are necessary.</p> Signup and view all the answers

    What is a disadvantage of the double cut ball shutoff compared to the full round ball shutoff?

    <p>Reduces attack stream quality due to turbulence</p> Signup and view all the answers

    What feature distinguishes the integrated tip in the Chief XD nozzles from the Elkhart Chief nozzles?

    <p>It lacks a beveled machined edge</p> Signup and view all the answers

    Which of the following is NOT suggested as part of the nozzle maintenance routine?

    <p>Lubricate with petroleum-based products</p> Signup and view all the answers

    Why is it important to inspect the swivel of a nozzle?

    <p>To ensure it spins freely</p> Signup and view all the answers

    What is one of the first steps to take when cleaning nozzles exposed to debris and grime?

    <p>Inspect the nozzle for visible defects first</p> Signup and view all the answers

    What is the recommended way to cycle the nozzle during the cleaning process?

    <p>Move the nozzle in and out while submerged</p> Signup and view all the answers

    Which type of nozzle construction allows for better performance in smooth bore operations?

    <p>Full round ball shutoff</p> Signup and view all the answers

    Which cleaning solution is specifically mentioned for cleaning nozzles?

    <p>Simple Green</p> Signup and view all the answers

    What indicates the presence of an integrated tip on a nozzle?

    <p>A beveled machined edge on the inner face</p> Signup and view all the answers

    What is the primary cleaning method suggested for the nozzle bail after use?

    <p>Use warm water and a mild degreaser</p> Signup and view all the answers

    What is one of the primary responsibilities of the backup firefighter during entry into a structure?

    <p>Sweep the immediate egress area around the door</p> Signup and view all the answers

    Which role is responsible for managing the hose line outside the structure?

    <p>Door firefighter</p> Signup and view all the answers

    What should recruits avoid doing with hose inside a building?

    <p>Stacking hose</p> Signup and view all the answers

    What does LFL stand for in the context of checking conditions around a door?

    <p>Life, Fire, Layout</p> Signup and view all the answers

    What is a critical consideration when selecting a hose line for firefighting?

    <p>The amount of fire present</p> Signup and view all the answers

    Which firefighter is responsible for assisting with hose advancement by preventing kinks prior to entry?

    <p>Control firefighter</p> Signup and view all the answers

    What should the backup firefighter do regarding hose deployment?

    <p>Pre-load only according to what the building offers</p> Signup and view all the answers

    Which action is NOT a responsibility of the door firefighter?

    <p>Managing hose inside the building</p> Signup and view all the answers

    Why is it important to control the line and its advancement during firefighting?

    <p>To minimize exposure to the fire</p> Signup and view all the answers

    What does the phrase 'The fire goes as the first line goes' imply?

    <p>Initial line selection is crucial</p> Signup and view all the answers

    What is the proper hose line configuration for a fire involving more than three rooms?

    <p>Two 1 ¾” hose lines or one 2” hose line</p> Signup and view all the answers

    When is it advisable to utilize a 2 ½” hand line according to the ADULTS acronym?

    <p>When tons of water are needed</p> Signup and view all the answers

    What flow rate can be expected from a 2 ½” attack line at 50 PSI with a 1 3/16” smooth bore tip?

    <p>296 GPM</p> Signup and view all the answers

    In defensive operations, what consideration should be made regarding hose lines?

    <p>Consider master streams</p> Signup and view all the answers

    What is the rule of thumb for selecting larger hose line sizes?

    <p>Every increase approximately doubles the GPM</p> Signup and view all the answers

    What volume of water does a deck gun deliver based on its specifications?

    <p>600 GPM</p> Signup and view all the answers

    For a fire that is classified as 'advanced fire on arrival', what should be the consideration for hose line selection?

    <p>Deploy a 2 ½” hand line</p> Signup and view all the answers

    What is recommended when fire is in large, non-compartmentalized areas?

    <p>Utilize a 2 ½” hand line</p> Signup and view all the answers

    Which configuration is suitable for a commercial structure fire?

    <p>A 2” or 2 ½” hose line</p> Signup and view all the answers

    What should be ensured before selecting the appropriate hose line for firefighting?

    <p>That enough water availability matches the BTUs burning</p> Signup and view all the answers

    What is the target flow range for a 2” attack line when fighting fires in problem occupancies?

    <p>200 to 250 GPM</p> Signup and view all the answers

    Which nozzle type, when used with a 2” handline, provides a flow rate of 240 GPM at 50 PSI at the nozzle?

    <p>Smooth bore with a 1 1/16” tip</p> Signup and view all the answers

    What key characteristic distinguishes commercial occupancies from multi-story residential buildings?

    <p>Number of compartments</p> Signup and view all the answers

    What is one significant disadvantage noted regarding the 2” hose attack package?

    <p>The use of the 1” tip is only marginally beneficial.</p> Signup and view all the answers

    Which type of occupancy is not classified as commercial as defined in the article?

    <p>Common hall apartment building</p> Signup and view all the answers

    What is the primary reason for evaluating the stretch potential before responding to an incident in a multi-floor building?

    <p>To minimize the distance firefighters need to travel to the fire floor</p> Signup and view all the answers

    How does the deployment of hose in an 'Attack over Supply' orientation benefit firefighters during an attack?

    <p>It reduces friction between the hose and the ground</p> Signup and view all the answers

    Which technique is suggested for effectively using larger handlines in commercial environments?

    <p>Flow water early to establish fire control</p> Signup and view all the answers

    What angle of operation is suggested for nozzle firefighters using larger handlines to combat higher reaction forces?

    <p>45° left and right from center</p> Signup and view all the answers

    What is the recommended minimum flow rate for a 2 ½” handline in firefighting situations?

    <p>260 GPM</p> Signup and view all the answers

    What hydraulic issue may arise when using a 2” handline at higher flows?

    <p>Increased reaction forces that diminish effectiveness</p> Signup and view all the answers

    What challenge does navigating corners and stairs present when responding to fires in multi-floor buildings?

    <p>It delays the firefighters' arrival at the point of service</p> Signup and view all the answers

    In what scenarios is a 2” line especially beneficial for firefighters?

    <p>In multi-level office buildings with long stretches</p> Signup and view all the answers

    What is the expected operational effect when using a 1 ¾” line compared to larger handlines during fire suppression?

    <p>Increased operational tempo due to compartmentalization</p> Signup and view all the answers

    What should firefighters consider regarding the manipulation of larger handlines compared to smaller ones?

    <p>Expect reduced nozzle movement capability with larger handlines</p> Signup and view all the answers

    What is the function of the Indy Stack in firefighting equipment?

    <p>To stack various nozzle sizes for different flows</p> Signup and view all the answers

    When might flows over 300 GPM be deemed inappropriate?

    <p>In a moving operation without fixed support</p> Signup and view all the answers

    What challenges arise from using smaller handlines during firefighting?

    <p>Inadequate water supply to combat larger fires</p> Signup and view all the answers

    How should attack packages be configured on CFD engines for effectiveness?

    <p>To ensure efficient deployment under realistic conditions</p> Signup and view all the answers

    What is the primary limitation when using the lower end of the smoothbore’s operational range with smaller handlines?

    <p>Inability to achieve effective flow rates</p> Signup and view all the answers

    What is the primary consideration when selecting a handline for firefighting?

    <p>Target flow capability</p> Signup and view all the answers

    Which statement best describes the operational capabilities of the 2 ½” white hose compared to the 2” red hose?

    <p>The 2 ½” hose can reduce perceived reaction force for the nozzle firefighter.</p> Signup and view all the answers

    What is a significant risk for a nozzle firefighter when advancing a line after making a turn?

    <p>Being unseated without support from the hose behind</p> Signup and view all the answers

    What should be prioritized when multiple engine companies are deployed on a fire?

    <p>The primary line must be properly staffed and functioning first.</p> Signup and view all the answers

    Which aspect of the fire scene should firefighters assess to determine the proper hose size?

    <p>Extent of the fire and size of the building</p> Signup and view all the answers

    Why should caution be taken with less favorable target flows while using a hose?

    <p>It reduces the effectiveness of the extinguishment effort.</p> Signup and view all the answers

    What training approach is recommended for firefighters regarding hose deployment?

    <p>Engage in enjoyable and varied training exercises.</p> Signup and view all the answers

    How should firefighters view the relationship between the size and weight of a hose line?

    <p>The added weight can actually assist in operational effectiveness.</p> Signup and view all the answers

    What is the expected pattern for advancing a 2 ½” hose through a building?

    <p>Shallow S patterns with reduced preloading.</p> Signup and view all the answers

    What overall benefit does effective hose deployment provide during firefighting operations?

    <p>Enhances the ability to control fire spread efficiently.</p> Signup and view all the answers

    What is one of the key advantages of forward stretching in firefighting?

    <p>It minimizes wasted effort and expedites deployment towards the structure.</p> Signup and view all the answers

    In what situation is split stretching particularly beneficial?

    <p>In tight urban environments with narrow access points.</p> Signup and view all the answers

    Which of the following factors is NOT considered when estimating hose stretch for firefighting?

    <p>The average width of hose bundles in the fire department.</p> Signup and view all the answers

    What is the recommended approach if there is uncertainty in estimating hose length needed for a fire?

    <p>Overestimate the length to ensure sufficient coverage.</p> Signup and view all the answers

    What mistake should be avoided when placing the hose bundle during a forward stretch?

    <p>Walking backwards to advance the hose toward the structure.</p> Signup and view all the answers

    What is a major advantage of the triple fold hose load?

    <p>Deploys quicker than other loads</p> Signup and view all the answers

    What is a significant drawback of the modified minuteman 50' bundle?

    <p>May not reach the objective</p> Signup and view all the answers

    What could cause the modified minuteman 100' bundle to experience deployment issues?

    <p>More moving parts involved</p> Signup and view all the answers

    How should the size of the hose bundle be determined when building?

    <p>It should match the approximate size of the hose bed</p> Signup and view all the answers

    What is a primary benefit of using the modified minuteman 100' bundle when encountering obstacles?

    <p>Easier to split around fixed obstacles</p> Signup and view all the answers

    Which step follows after building the 100' bundle section in the loading process?

    <p>Loading the remaining hose section</p> Signup and view all the answers

    What is a common issue associated with the deployment of the 100' bundle if not secured properly?

    <p>Spaghetti effect</p> Signup and view all the answers

    What is the primary purpose of placing a small loop in the rear of the hose bundle?

    <p>To aid in back stretches or split stretches</p> Signup and view all the answers

    When building the hose pack, where should the coupling of the hose be positioned?

    <p>At the front of the bundle, towards the nozzle</p> Signup and view all the answers

    Why is it important to build the hose pack away from oneself?

    <p>To keep tabs facing up for better deployment</p> Signup and view all the answers

    What technique should be employed to deploy a hose bundle efficiently through a narrow entry point?

    <p>Back stretch</p> Signup and view all the answers

    What should be done when the coupling reaches the endpoint of the hose bundle during loading?

    <p>Connect the nozzle and fold it up over the front</p> Signup and view all the answers

    When is it acceptable for the second loop in the hose bundle not to align exactly with the midpoint?

    <p>When it is the approximate midpoint and serves its purpose</p> Signup and view all the answers

    How should the dead stack be configured when loading into a hose bed with a single stack setup?

    <p>Placed at the bottom with the last coupling draped back</p> Signup and view all the answers

    What common mistake can delay hose deployment when making entry into a structure?

    <p>Failing to split the door correctly</p> Signup and view all the answers

    What is a major drawback of utilizing the back stretch technique?

    <p>Crews will need to backtrack their steps</p> Signup and view all the answers

    What is critical to remember about hose deployment techniques?

    <p>To fully commit to a chosen technique</p> Signup and view all the answers

    What is the primary goal of the nozzle firefighter when preparing to make entry at a fire scene?

    <p>To establish an angle for hose advancement</p> Signup and view all the answers

    What should be the maximum angle at which the hose placement is directed toward the door?

    <p>45°</p> Signup and view all the answers

    Why should storm/screen doors be removed prior to entry?

    <p>To prevent them from being potential obstacles</p> Signup and view all the answers

    What defines the inside of the door concerning hose placement and fire location?

    <p>The closest 45° area to the engine</p> Signup and view all the answers

    How should the nozzle firefighter approach the area between two cars after moving back toward the engine?

    <p>In a straight line to minimize obstruction</p> Signup and view all the answers

    What does the driver operator need to ensure after the nozzle firefighter has cleared the hose?

    <p>That the loop section is placed on the other side of the cars</p> Signup and view all the answers

    How can the organization of the fireground be improved at a fire scene?

    <p>By ensuring proper line placement and angles</p> Signup and view all the answers

    What is a pinch point in the context of firefighting hose placement?

    <p>A location that limits hose movement due to obstacles</p> Signup and view all the answers

    What should the nozzle firefighter do with the attack line once reached the opening during the operation?

    <p>Flake it out towards the target</p> Signup and view all the answers

    What is the primary goal when splitting cars for firefighting operations?

    <p>To ensure 100 feet of usable hose is accessible on the fire side</p> Signup and view all the answers

    What should be done to avoid kinking the hose while performing the shoulder load maneuver?

    <p>Rotate 180° into the shoulder load</p> Signup and view all the answers

    Which step follows carrying the shoulder load between the cars?

    <p>Pull the loop tight and move excess hose out of the street</p> Signup and view all the answers

    What is the purpose of placing a tight looped section of the hose between the two cars?

    <p>To maximize the working length of hose on the fire side</p> Signup and view all the answers

    During a two-firefighter deployment method, what is the order of actions for the pump operator and nozzle firefighter?

    <p>Pump operator pulls the loop, then the nozzle firefighter pulls the shoulder bundle</p> Signup and view all the answers

    What happens when the nozzle firefighter reaches the back tire of the second car?

    <p>He rotates away from the target and back toward the engine</p> Signup and view all the answers

    How should the driver position themselves while pulling the loop section?

    <p>Tight to the cars to maintain control of the loop</p> Signup and view all the answers

    What is the consequence of improperly managing the hose between the cars?

    <p>Potential for the hose to be caught on the car tires</p> Signup and view all the answers

    What is the recommended initial action during the hose deployment process?

    <p>Start by pulling the stack closest to the fire</p> Signup and view all the answers

    What should be the length of the backup line to ensure it matches the structure for effective firefighting?

    <p>Length matching the structure</p> Signup and view all the answers

    When performing a vertical stretch, where should the appliance ideally be placed in relation to the entryway?

    <p>Approximately ten feet from the attack line's entrance</p> Signup and view all the answers

    What is the general rule of thumb for the amount of hose to have on the fire floor landing for a three-story stretch?

    <p>75 feet</p> Signup and view all the answers

    What is the maximum number of stories the hook stretch method should be utilized for?

    <p>Three stories</p> Signup and view all the answers

    Which piece of equipment is crucial for connecting the pump discharge in a vertical stretch?

    <p>Gated wye</p> Signup and view all the answers

    What is a potential hazard when dropping the hose over the top of an open landing?

    <p>Hose dragging back over the rail</p> Signup and view all the answers

    Why is it important for the nozzle firefighter to have their knee on the hose line before charging it?

    <p>To prevent the hose from slipping back down</p> Signup and view all the answers

    What is the initial action taken after the 3” trunk line is set at the appropriate spot for vertical stretching?

    <p>Close the gated wye or water thief</p> Signup and view all the answers

    Which method should be avoided when the hose is in use over three stories?

    <p>Hook stretch</p> Signup and view all the answers

    What should firefighters ensure regarding the bale of a break apart nozzle during operation?

    <p>It should be tied open to maintain flow.</p> Signup and view all the answers

    What is a critical safety measure to take when extending an attack line?

    <p>Ensure the crew is equipped with self-contained breathing apparatus (SCBA).</p> Signup and view all the answers

    Which method allows firefighters to extend a hose line without depressurizing the attack line?

    <p>Using a break apart nozzle.</p> Signup and view all the answers

    What is the advantage of using a double donut roll?

    <p>It keeps both couplings readily available for quick connections.</p> Signup and view all the answers

    Under what circumstances should extending an attack line be avoided?

    <p>In an IDLH atmosphere.</p> Signup and view all the answers

    Which option is NOT part of the hose line extension process when using a break apart nozzle?

    <p>Using a secondary pump to add pressure.</p> Signup and view all the answers

    What should be done if a break apart nozzle is not available for extending a line?

    <p>Shut down the line at the pump before removing the nozzle.</p> Signup and view all the answers

    What is considered a critical safety point when extending an attack line?

    <p>The bale of the break apart nozzle after extending the line.</p> Signup and view all the answers

    What precaution should be taken when extending a hose line in an unsafe environment?

    <p>Establish a safe area before proceeding.</p> Signup and view all the answers

    Why is the bale of a break apart nozzle considered critical after extending a line?

    <p>It must maintain continuous water flow to the nozzle.</p> Signup and view all the answers

    What is the primary reason for a pump operator to gate down a discharge valve for a larger handline?

    <p>To ensure proper nozzle pressure for the smaller handline.</p> Signup and view all the answers

    What is a consequence of gating down an interior handline discharge valve?

    <p>It creates a smaller discharge opening, potentially affecting flow.</p> Signup and view all the answers

    When multiple hose lines are in use, why is it essential for the pump operator to adjust discharge pressures?

    <p>To prevent excessive nozzle reaction in various lines.</p> Signup and view all the answers

    What might be a potential hazard if a pump operator fails to adjust the discharge pressure for different hose lines?

    <p>Increased nozzle reaction leading to unsafe working conditions.</p> Signup and view all the answers

    Why might it be more hazardous to pump a larger handline at a higher pressure than required?

    <p>It results in greater nozzle feedback and a risk of losing control.</p> Signup and view all the answers

    What action should the Pump Boss take if the pump is in RPM LIMIT MODE?

    <p>Throttling down and gating down the discharge</p> Signup and view all the answers

    Why is it important for a pump operator to understand residual pressure on the intake gauge?

    <p>To determine the volume available from the hydrant</p> Signup and view all the answers

    If a pump operator faces excessive discharge pressure, which method should be tried first?

    <p>Throttle down the engine supplying water</p> Signup and view all the answers

    What is the primary concern when a pump operator alternates between tank water and a supply line in subzero temperatures?

    <p>Avoiding ice hazards on the scene</p> Signup and view all the answers

    What should the pump operator do if initial static pressure readings are uncertain due to an active line?

    <p>Gather more information about the active line pressure</p> Signup and view all the answers

    To maintain adequate pressure when intake valves are gated down, what must the attack operator ensure?

    <p>That sufficient water volume is still available</p> Signup and view all the answers

    What happens if the pump operator does not manage the residual pressure accurately during a fire incident?

    <p>They could run out of water unexpectedly</p> Signup and view all the answers

    What is the risk associated with gating down interior attack lines without timely recognition of pressure loss?

    <p>Inability to maintain effective stream pressure</p> Signup and view all the answers

    Why is it important to position the supply engine as close as possible to the hydrant?

    <p>To minimize friction loss and maximize water supply</p> Signup and view all the answers

    In what scenario would using a 5” supply line be preferable over a 3” line?

    <p>During large incidents requiring high flow rate</p> Signup and view all the answers

    What consequence arises from rapidly opening a discharge when using tank water with a master stream?

    <p>Insufficient water flow to the attack engine</p> Signup and view all the answers

    What is a critical reason for maintaining the effectiveness of gated exterior lines?

    <p>To balance supply between multiple lines without losing pressure</p> Signup and view all the answers

    What should a pump operator consider before gating down an interior line?

    <p>Evaluate the current residual pressure levels</p> Signup and view all the answers

    Which of the following best describes the reasoning behind using a 3” supply line for most residential incidents?

    <p>Sufficient flow for working fires while minimizing wastage</p> Signup and view all the answers

    What disadvantage might arise if the pump operator forgets to open a gated line during a fire incident?

    <p>Insufficient water to combat the fire effectively</p> Signup and view all the answers

    What is a significant limitation of a simple water supply setup?

    <p>It is dependent on the flow and pressure from the hydrant.</p> Signup and view all the answers

    In the context of establishing a series water supply, what is the role of the supply pumper?

    <p>To use a 5” supply hose to connect to the hydrant.</p> Signup and view all the answers

    What does the term 'at draft' refer to in the context of CFD fire pumps?

    <p>Discharging water while using a static water source.</p> Signup and view all the answers

    Why is establishing a water supply considered a 'safety net' for pump operators?

    <p>It ensures a continuous flow of water regardless of external factors.</p> Signup and view all the answers

    What is a critical advantage of using a series water supply over a simple water supply?

    <p>It allows the attack crew to remain entirely independent of the hydrant pressure.</p> Signup and view all the answers

    What is the primary water supply priority for the supply engine?

    <p>To secure a hydrant</p> Signup and view all the answers

    When should the attack engine driver start using supply engine water?

    <p>After depleting ¼ of their tank water</p> Signup and view all the answers

    What is a recommended practice for the supply driver when setting discharge pressure?

    <p>To charge the supply line to around 80-100 PSI</p> Signup and view all the answers

    How should the supply driver react if the hydrant pressure exceeds expectations?

    <p>Decrease the pressure to the attack truck</p> Signup and view all the answers

    Where should the supply engine be positioned when connecting to a hydrant?

    <p>One car width away from the curb and aligned with the rear wheel</p> Signup and view all the answers

    What is essential for the attack driver after opening their supply intake?

    <p>To isolate their remaining tank water for emergencies</p> Signup and view all the answers

    What is the preferred method for establishing a water supply for the attack engine?

    <p>Creating a series supply with the supply engine</p> Signup and view all the answers

    What is the primary advantage of locating the supply pumper within 25 feet of a hydrant?

    <p>It maximizes the water flow to the attack pumper.</p> Signup and view all the answers

    Which method is recommended for increasing the ability to flow more water during firefighting operations?

    <p>Connecting two engines using a second 3&quot; supply line.</p> Signup and view all the answers

    What defines the operational limitation of the attack pumper when connected to a positive source?

    <p>The residual pressure in the water main.</p> Signup and view all the answers

    How does the setup of pumping in series benefit the firefighting process?

    <p>It provides redundancy if one pump fails.</p> Signup and view all the answers

    What critical factor influences how much water can be moved from the pump during high-demand situations?

    <p>The diameter of the supply line selected.</p> Signup and view all the answers

    What outcome occurs if the attack pumper tries to flow more water than the supply engine can provide?

    <p>The supply pump can increase its discharge pressure.</p> Signup and view all the answers

    What happens if the supply engine's intake gauge still shows pressure?

    <p>The supply engine is still capable of providing water.</p> Signup and view all the answers

    Which setup is deemed most effective for moving extreme volumes of water efficiently?

    <p>Employing three 3&quot; hose lines into a trigate appliance.</p> Signup and view all the answers

    In what situation could the demand for water exceed 1000 GPM when using a two-stage pump in pressure mode?

    <p>Multiple line operations</p> Signup and view all the answers

    What must a pump operator do to safely transfer a pump from pressure mode to volume mode?

    <p>Dial down the throttle of the pump</p> Signup and view all the answers

    What is a significant consequence of not pulling crews from an attack line during a mode transfer?

    <p>A sudden drop in supply pressure for the crew</p> Signup and view all the answers

    Why is it argued that fire pump operations should not overly focus on wear prevention?

    <p>Modern diesel motors can handle much more wear than fire pumps see.</p> Signup and view all the answers

    What benefit does starting a two-stage pump in volume mode provide?

    <p>It allows for higher flow rates without the need for mode changes.</p> Signup and view all the answers

    In what scenario is it advisable to operate a two-stage pump in pressure mode?

    <p>When managing a fire in a high-rise structure</p> Signup and view all the answers

    What happens to the pump's RPM in pressure mode when the discharge pressure drops?

    <p>The RPM increases to maintain the selected pressure</p> Signup and view all the answers

    What condition triggers the pump governor to switch to RPM Limit Mode?

    <p>When discharge pressure cannot be maintained despite increased RPM</p> Signup and view all the answers

    What is the function of the governor's Low Water Cycle?

    <p>To indicate the discharge pressure has fallen below 45 PSI</p> Signup and view all the answers

    Which statement accurately describes the operational capabilities of a two-stage pump in volume mode?

    <p>It provides the maximum GPM output without disrupting operations</p> Signup and view all the answers

    What action does the governor take if the discharge pressure remains below 15 PSI for more than three minutes?

    <p>It cancels the pressure setting and switches to IDLE MODE.</p> Signup and view all the answers

    How does the governor respond if the discharge pressure is approaching the 30 PSI limit in RPM Mode?

    <p>It lowers the RPM to prevent a high-pressure surge.</p> Signup and view all the answers

    When switching from Pressure Mode to RPM Mode, what pressure setting does the pump adopt?

    <p>The last RPM operating pressure from Pressure Mode.</p> Signup and view all the answers

    Which step is NOT required during the monthly maintenance of the pump system?

    <p>Reprogram the governor to the desired PSI settings.</p> Signup and view all the answers

    What indicates that the relief valve is engaged when the pilot valve is ON?

    <p>An amber light on the control panel.</p> Signup and view all the answers

    How should the pressure adjustment handle be turned to decrease the required pressure for the relief valve?

    <p>Counterclockwise in half turn increments.</p> Signup and view all the answers

    What occurs when the governor sets the engine RPM to IDLE due to no water supply?

    <p>The message display shows NO WATER.</p> Signup and view all the answers

    What does the pilot valve’s pressure adjustment handle control?

    <p>The opening pressure of the relief valve.</p> Signup and view all the answers

    What is necessary before starting the monthly maintenance procedure?

    <p>Engage the pump to a discharge pressure of 150 PSI.</p> Signup and view all the answers

    What is the purpose of removing the intake screens before back flushing the pump?

    <p>To ensure water flows directly into the pump without obstruction</p> Signup and view all the answers

    Why might older 5” intake screens be particularly challenging to remove?

    <p>They may have corroded and become fragile</p> Signup and view all the answers

    What is the expected outcome of back flushing the pump through the intakes?

    <p>To assist in the removal of fine sediment from the piping</p> Signup and view all the answers

    What should be done if an intake screen is damaged during removal?

    <p>Replace the screen as it is considered sacrificial</p> Signup and view all the answers

    During the back flushing process, what connects the hydrant to the pump to facilitate the flow of water?

    <p>A 5” supply hose to the 5” discharge</p> Signup and view all the answers

    What should be done daily to prevent freezing of pump valves in cold weather?

    <p>Open and close all intake and discharge valves.</p> Signup and view all the answers

    What is the proper action to take with the master drain during freezing weather?

    <p>Keep it closed while other drains are open.</p> Signup and view all the answers

    What is a crucial maintenance step after flushing intake systems?

    <p>Inspect gaskets for rips or tears and service them.</p> Signup and view all the answers

    Which of the following is a consequence of failing to follow cold weather maintenance procedures?

    <p>Increased likelihood of transducer failure.</p> Signup and view all the answers

    What is an indicator of a problem with the Pump Boss systems in cold weather?

    <p>Repeated fault codes FO6 and EO6 displayed.</p> Signup and view all the answers

    What procedure should be followed if an engine must be stored outside during winter?

    <p>Ensure all water is drained and drains are left open.</p> Signup and view all the answers

    Why is just recirculating the pump ineffective in preventing freezing?

    <p>Ice formation can still happen at low points in the piping.</p> Signup and view all the answers

    What must be done if gauging failures occur with the Pump Boss during operation?

    <p>Switch to RPM mode for limited operations.</p> Signup and view all the answers

    What is the primary starting pressure recommended for effective water flow at the turntable in pressure mode?

    <p>150 PSI</p> Signup and view all the answers

    Which of the following is NOT an indicator of an adequate master stream supply?

    <p>The volume of water in the tank</p> Signup and view all the answers

    What is a common method for establishing a supply line between the engine and tiller?

    <p>Two 3” lines from the engine’s discharges</p> Signup and view all the answers

    What should be done once the water is flowing to maximize potential flow into the platform’s auxiliary intake?

    <p>Establish an additional 3” supply line</p> Signup and view all the answers

    How is the pressure managed when using the Akron Brass Akromatic nozzle?

    <p>It closely maintains 80 PSI throughout its operating range.</p> Signup and view all the answers

    Which supply pressure is primarily used for platforms to initiate water flow at their pump intake?

    <p>80 PSI</p> Signup and view all the answers

    What is essential to confirm before charging the supply line for the tiller?

    <p>That the tiller operator has signaled readiness</p> Signup and view all the answers

    Study Notes

    904K Piercing Nozzle

    • Specifications:

      • Built-in shut-off valve (model K)
      • 1.5" National standard threaded connection
      • 1.25" diameter shaft
      • Up to 25' coverage (2,500 sq ft)
      • Limited back pressure (check mark piping)
      • Replaceable hardened steel tip
      • Made of 1020 soft alloy steel (iron-carbon)
      • 3.75" drive depth for full penetration
      • Removable safety strike handle
      • Replaceable strike plate
      • 24" extensions
      • 175 GPM at 100 PSI

    • Uses:

      • Attic fires
      • Basement fires
      • Box truck/semi-truck fires
      • Dumpster fires
      • Car fires
      • Hidden compartment fires
      • Confined space fires

    • Operation:

      • Assemble nozzle with extensions
      • Attach hose and shut-off valve (if not model K)
      • Position tip on exterior surface
      • Drive nozzle into compartment, open valve

    • Advantages:

      • Safe confined space fire suppression
      • Steam expansion for fire suppression
      • Limits structural damage

    • Disadvantages:

      • Requires multiple firefighters
      • Possible damage to hidden utilities
      • Potential smoke explosions
      • Limited reach

    Elkhart Brass Model

    • Specifications:
      • 36' diameter coverage
      • 2 ½" female coupling
      • Chrome plated finish
      • 6.25" length
      • 7.5 lbs weight
      • Nine outlets (.5" to .625")
      • 340 GPM at 50 PSI; 495 GPM at 100 PSI

    Akron Brass Model

    • Specifications:
      • 14' diameter coverage
      • 2 ½" female coupling
      • 5.125" length
      • 4.5 lbs weight
      • Nine variable angle orifices (3/8" & 13/32")
      • 250 GPM at 100 PSI

    Placing in Service

    • Inspect for cleanliness and damage
    • Attach hose and 2 ½" shut-off device (ball valve)
    • Position directly above fire, cut a 12"x12" hole
    • Lower nozzle 1-2 ft below opening

    Indirect vs. Direct Attack

    • Indirect Attack:

      • Converts water to steam, absorbs heat, cools environment
      • Allows for follow-up with interior direct attack

    • Direct Attack:

      • Applies water directly to fire
      • Uses water, steam, and thermal disruption to extinguish

    • Indirect Attack Advantages:

      • Easier for entry team

    • Indirect Attack Disadvantages:

      • May conduct electricity
      • Limited stream reach

    Elkhart Brass R.A.M. XD

    • Specifications:

      • Patent-pending hydraulic stability system
      • Four fold-out aluminum legs with carbide tips
      • Locking pin for valve
      • Attached safety strap
      • 2 ½" inlet and outlet
      • 20° of travel left/right
      • 51° - 35° unmanned operation / 35° - 14° manned operation

    • Pressure and Flow:

      • Max 500 GPM, 150 PSI
      • 1 3/8" deluge tip (505 GPM at 80 PSI; 55 lbs of friction loss per 100')
      • Optimal flow with 20' hose behind RAM

    • Active Safety System:

      • Self-correcting increase in nozzle angle (protection against dangerous unmanned use)
      • System active at ~350 GPM

    Mercury Quick Attack Monitor/MQA

    • Specifications:

      • Rated for up to 500 GPM
      • 6 PSI friction loss at 500 GPM
      • 20° tip rotation
      • 60° - 30° unmanned operation; 20° minimum manned operation
      • Spring-loaded mechanism for travel position adjustment

    • Pressure & Flow:

      • Triple stacked tips are common
        • 1" = 266 GPM at 80 PSI
        • 1-1/8" = 336 GPM at 80 PSI
        • 1-1/4" = 415 GPM at 80 PSI
          • Can reach 498 GPM at 115 PSI with 1-1/4" tip
        • 1-3/8" = 502 GPM at 80 PSI
        • 1-1/2" = 496 GPM at 55 PSI (max pressure)
      • 2-1/2" inlet/outlet for hose extension

    • Tactical Considerations: - For going with a 1 inch tip with the MQA, there is no advantage over a 1-1/8 inch tip at 50 psi

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    Description

    This quiz covers the specifications, uses, and operation of the 904K Piercing Nozzle designed for fire suppression in various environments including confined spaces. Participants will explore its unique features and advantages, making it an essential tool for firefighters and emergency responders. Test your knowledge on this innovative firefighting equipment!

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