Podcast
Questions and Answers
What material is the 904K piercing nozzle primarily made of?
What material is the 904K piercing nozzle primarily made of?
- 1020 soft alloy steel (correct)
- Aluminum alloy
- Stainless steel
- Bronze
What is the maximum coverage area of the 904K nozzle?
What is the maximum coverage area of the 904K nozzle?
- 4,000 square feet
- 1,000 square feet
- 3,500 square feet
- 2,500 square feet (correct)
What is a disadvantage of using the 904K piercing nozzle?
What is a disadvantage of using the 904K piercing nozzle?
- May encounter hidden utilities (correct)
- Requires minimal training
- Offers extended reach
- Can safely extinguish fires
How far must the nozzle be driven into the surface for full penetration?
How far must the nozzle be driven into the surface for full penetration?
What is the rated flow of the 904K nozzle at 100 PSI?
What is the rated flow of the 904K nozzle at 100 PSI?
What type of fires is the 904K nozzle NOT used for?
What type of fires is the 904K nozzle NOT used for?
Which feature of the 904K nozzle helps to limit structural damage?
Which feature of the 904K nozzle helps to limit structural damage?
What must be done before opening the shut-off valve on the 904K nozzle?
What must be done before opening the shut-off valve on the 904K nozzle?
What is the maximum flow rate of the Elkhart Brass model nozzle at 50 PSI?
What is the maximum flow rate of the Elkhart Brass model nozzle at 50 PSI?
Which of the following features contributes to the physical attributes of the Elkhart Brass model nozzle?
Which of the following features contributes to the physical attributes of the Elkhart Brass model nozzle?
How many outlets does the Elkhart Brass model nozzle feature?
How many outlets does the Elkhart Brass model nozzle feature?
What is the diameter of the area that the Elkhart Brass model nozzle can cover when functioning?
What is the diameter of the area that the Elkhart Brass model nozzle can cover when functioning?
Which material contributes to the external finish of the Elkhart Brass model nozzle?
Which material contributes to the external finish of the Elkhart Brass model nozzle?
What is the weight of the Akron brass nozzle described?
What is the weight of the Akron brass nozzle described?
How many variable angle orifices does the Akron nozzle feature?
How many variable angle orifices does the Akron nozzle feature?
What is the female coupling size of the nozzle?
What is the female coupling size of the nozzle?
At what pressure is the nozzle capable of flowing 250 GPM?
At what pressure is the nozzle capable of flowing 250 GPM?
What is the diameter of the area covered by the Akron brass nozzle?
What is the diameter of the area covered by the Akron brass nozzle?
What is the primary method used in an indirect attack to extinguish a fire?
What is the primary method used in an indirect attack to extinguish a fire?
In a direct attack on a fire, what is primarily used to achieve fire extinguishment?
In a direct attack on a fire, what is primarily used to achieve fire extinguishment?
Which of the following scenarios best describes the sequence of actions in an indirect attack?
Which of the following scenarios best describes the sequence of actions in an indirect attack?
Which of the following statements is true about both indirect and direct attacks?
Which of the following statements is true about both indirect and direct attacks?
Which technique is typically followed after an indirect attack is initiated?
Which technique is typically followed after an indirect attack is initiated?
What is the maximum angle of travel for the hydraulic stability system left or right?
What is the maximum angle of travel for the hydraulic stability system left or right?
What feature of the hydraulic stability system helps ensure safety during operation?
What feature of the hydraulic stability system helps ensure safety during operation?
What is the minimum angle to which the system can be lowered when manned?
What is the minimum angle to which the system can be lowered when manned?
What is the purpose of the storage pouch included with the safety strap?
What is the purpose of the storage pouch included with the safety strap?
Which of the following is a feature of the hydraulic stability system that aids in its adjustment?
Which of the following is a feature of the hydraulic stability system that aids in its adjustment?
What is the maximum operational flow rate that should not be exceeded?
What is the maximum operational flow rate that should not be exceeded?
What is the calculated flow rate of the 1 3/8” deluge tip at 80 psi?
What is the calculated flow rate of the 1 3/8” deluge tip at 80 psi?
What is the friction loss within the RAM when flowing at 500 GPM?
What is the friction loss within the RAM when flowing at 500 GPM?
To achieve optimal flow, how much hose must be maintained in a straight line behind the RAM?
To achieve optimal flow, how much hose must be maintained in a straight line behind the RAM?
What is the friction loss per 100 feet when using the deluge tip at 80 psi?
What is the friction loss per 100 feet when using the deluge tip at 80 psi?
What is the friction loss experienced by the unit at a flow rate of 500 GPM?
What is the friction loss experienced by the unit at a flow rate of 500 GPM?
What is the maximum angle that the tip can rotate from center?
What is the maximum angle that the tip can rotate from center?
When unmanned, what is the operational range of angles the unit can be operated from?
When unmanned, what is the operational range of angles the unit can be operated from?
What adjustment does the top handle's spring-loaded mechanism allow?
What adjustment does the top handle's spring-loaded mechanism allow?
At what flow rate is the unit rated up to?
At what flow rate is the unit rated up to?
What is the maximum flow rate you can achieve with a 1-1/4” tip if it is pumped at 115 psi?
What is the maximum flow rate you can achieve with a 1-1/4” tip if it is pumped at 115 psi?
At what nozzle pressure does a 1-1/2” deluge tip need to be pumped to maintain its rated GPM?
At what nozzle pressure does a 1-1/2” deluge tip need to be pumped to maintain its rated GPM?
What is the flow rate for a 1-3/8” tip at a nozzle pressure of 80 psi?
What is the flow rate for a 1-3/8” tip at a nozzle pressure of 80 psi?
Which of the following tips produces the highest friction loss per 100 feet at a nozzle pressure of 80 psi?
Which of the following tips produces the highest friction loss per 100 feet at a nozzle pressure of 80 psi?
What is the flow rate of a 1” nozzle tip at a nozzle pressure of 80 psi?
What is the flow rate of a 1” nozzle tip at a nozzle pressure of 80 psi?
What does the UL classification rating of 2A indicate about the fire extinguisher?
What does the UL classification rating of 2A indicate about the fire extinguisher?
What is the weight of the Amerex 240 H fire extinguisher when it is full?
What is the weight of the Amerex 240 H fire extinguisher when it is full?
Which of the following statements about the discharge time of the Amerex 240 H is correct?
Which of the following statements about the discharge time of the Amerex 240 H is correct?
What type of fire is the Amerex 240 H specifically intended for?
What type of fire is the Amerex 240 H specifically intended for?
What is the maximum effective range for the Amerex 240 H fire extinguisher?
What is the maximum effective range for the Amerex 240 H fire extinguisher?
What is the significance of the 10-A rating for the Ansul Sentry 10 extinguisher?
What is the significance of the 10-A rating for the Ansul Sentry 10 extinguisher?
What caution should be taken when using the Ansul Sentry 10 extinguisher in small areas?
What caution should be taken when using the Ansul Sentry 10 extinguisher in small areas?
What is the maximum effective range of the Ansul Sentry 10 extinguisher?
What is the maximum effective range of the Ansul Sentry 10 extinguisher?
How often should the Ansul Sentry 10 extinguisher be inspected?
How often should the Ansul Sentry 10 extinguisher be inspected?
What does the 60-B:C rating indicate for the Ansul Sentry 10 extinguisher?
What does the 60-B:C rating indicate for the Ansul Sentry 10 extinguisher?
Which of the following statements accurately describes a CO2 extinguisher's capabilities?
Which of the following statements accurately describes a CO2 extinguisher's capabilities?
What is the purpose of the 10-B:C UL Rating on a CO2 extinguisher?
What is the purpose of the 10-B:C UL Rating on a CO2 extinguisher?
What impact does wind or air movement have on the effectiveness of a CO2 extinguisher?
What impact does wind or air movement have on the effectiveness of a CO2 extinguisher?
How frequently should a CO2 extinguisher be inspected?
How frequently should a CO2 extinguisher be inspected?
What is the maximum operating pressure specified for a CO2 extinguisher?
What is the maximum operating pressure specified for a CO2 extinguisher?
Which foam application rate is recommended for hydrocarbons like gasoline or diesel?
Which foam application rate is recommended for hydrocarbons like gasoline or diesel?
What is the primary use of Class A foam?
What is the primary use of Class A foam?
Which statement about Class B foam application rates is true?
Which statement about Class B foam application rates is true?
What is the advantage of CFD foam compared to other types of foam?
What is the advantage of CFD foam compared to other types of foam?
In what scenario would you apply a 0.3-0.6% application rate of Class A foam?
In what scenario would you apply a 0.3-0.6% application rate of Class A foam?
What is the recommended percentage knob setting for polar solvents when using the TASK FORCE TIP PRO/PAK?
What is the recommended percentage knob setting for polar solvents when using the TASK FORCE TIP PRO/PAK?
The maximum pressure supported by the TASK FORCE TIP PRO/PAK is:
The maximum pressure supported by the TASK FORCE TIP PRO/PAK is:
Which nozzle provides the shortest reach when using the TASK FORCE TIP PRO/PAK?
Which nozzle provides the shortest reach when using the TASK FORCE TIP PRO/PAK?
For fuel spills and vehicle fires, the percentage knob setting should be adjusted to what value?
For fuel spills and vehicle fires, the percentage knob setting should be adjusted to what value?
Which of the following is an ordinary combustible material suitable for Class A use?
Which of the following is an ordinary combustible material suitable for Class A use?
What is the required pressure at the eductor to ensure proper function?
What is the required pressure at the eductor to ensure proper function?
What is the maximum length of 1 3/4” hose that can be used with the 125 GPM eductor?
What is the maximum length of 1 3/4” hose that can be used with the 125 GPM eductor?
Which nozzle should be used with the 95 GPM eductor?
Which nozzle should be used with the 95 GPM eductor?
How does the maximum length of hose differ between the 95 GPM and 125 GPM eductors?
How does the maximum length of hose differ between the 95 GPM and 125 GPM eductors?
What is the flow rate capability of the 125 GPM eductor paired with the correct nozzle?
What is the flow rate capability of the 125 GPM eductor paired with the correct nozzle?
What is the primary function of the dispatchers monitoring the cameras for State Farm Blockers?
What is the primary function of the dispatchers monitoring the cameras for State Farm Blockers?
How can firefighters utilize the services of the State Farm Blockers before arriving on the scene?
How can firefighters utilize the services of the State Farm Blockers before arriving on the scene?
Which of the following best describes the method of contacting State Farm Blockers for dispatch assistance?
Which of the following best describes the method of contacting State Farm Blockers for dispatch assistance?
What advantage do State Farm Blockers provide by monitoring cameras?
What advantage do State Farm Blockers provide by monitoring cameras?
In what way do dispatchers impact the initial response to an accident scene?
In what way do dispatchers impact the initial response to an accident scene?
What distinguishes the Elkhart Chief XD nozzle from the Elkhart Chief nozzle?
What distinguishes the Elkhart Chief XD nozzle from the Elkhart Chief nozzle?
Which feature is NOT found in the Elkhart Chief XD nozzle?
Which feature is NOT found in the Elkhart Chief XD nozzle?
How are the internal shutoffs of both the Elkhart Chief and Elkhart Chief XD nozzles characterized?
How are the internal shutoffs of both the Elkhart Chief and Elkhart Chief XD nozzles characterized?
Which aspect of the Elkhart Chief XD nozzle's construction sets it apart in functionality?
Which aspect of the Elkhart Chief XD nozzle's construction sets it apart in functionality?
Which characteristic is shared by both the Elkhart Chief and Elkhart Chief XD nozzles?
Which characteristic is shared by both the Elkhart Chief and Elkhart Chief XD nozzles?
What is the primary purpose of nozzle pressure in firefighting?
What is the primary purpose of nozzle pressure in firefighting?
How is nozzle reaction defined in fire service terminology?
How is nozzle reaction defined in fire service terminology?
At what nozzle pressure are smooth bore hand line nozzles designed to be effectively operated?
At what nozzle pressure are smooth bore hand line nozzles designed to be effectively operated?
What does flow refer to in firefighting terminology?
What does flow refer to in firefighting terminology?
Which statement accurately reflects nozzle pressure variance in different types of nozzles?
Which statement accurately reflects nozzle pressure variance in different types of nozzles?
What is the primary reason for limiting the nozzle orifice size to no greater than half the diameter of the hose?
What is the primary reason for limiting the nozzle orifice size to no greater than half the diameter of the hose?
What happens if the orifice of the nozzle exceeds half the diameter of the hose?
What happens if the orifice of the nozzle exceeds half the diameter of the hose?
Which statement best describes the relationship between nozzle size and fire attack effectiveness?
Which statement best describes the relationship between nozzle size and fire attack effectiveness?
In the context of the Freeman Principle, what is the impact of a larger orifice nozzle on stream characteristics?
In the context of the Freeman Principle, what is the impact of a larger orifice nozzle on stream characteristics?
Why is the optimal exit velocity significant for fire attack operations?
Why is the optimal exit velocity significant for fire attack operations?
What is the nozzle reaction for the 188XD Smooth Bore 1 3/16” Single Tip at 50 PSI NP?
What is the nozzle reaction for the 188XD Smooth Bore 1 3/16” Single Tip at 50 PSI NP?
Which property is unique to the 2 1⁄2” ELKHART DB-375-GAT shutoff compared to newer models like the 2 1⁄2” ELKHART BRASS XD shutoff?
Which property is unique to the 2 1⁄2” ELKHART DB-375-GAT shutoff compared to newer models like the 2 1⁄2” ELKHART BRASS XD shutoff?
What is the maximum flow rate of the ELKHART ST-185-AIFD 'INDY STACK' with the 1 1/4” tip at 50 PSI NP?
What is the maximum flow rate of the ELKHART ST-185-AIFD 'INDY STACK' with the 1 1/4” tip at 50 PSI NP?
What is the main consequence of under or over pumping a nozzle?
What is the main consequence of under or over pumping a nozzle?
Which tip size of the ELKHART BRASS nozzle requires a range of pressures for desired GPM and nozzle reaction?
Which tip size of the ELKHART BRASS nozzle requires a range of pressures for desired GPM and nozzle reaction?
What is the recommended method for cleaning nozzles according to operational guidelines?
What is the recommended method for cleaning nozzles according to operational guidelines?
Why is it important to use a silicone-based lubricant for the nozzle maintenance?
Why is it important to use a silicone-based lubricant for the nozzle maintenance?
Which of the following components should be checked for damage during the nozzle inspection?
Which of the following components should be checked for damage during the nozzle inspection?
What action should be performed while cleaning the nozzle in the warm water and degreaser mixture?
What action should be performed while cleaning the nozzle in the warm water and degreaser mixture?
What is a recommended practice after cleaning a nozzle?
What is a recommended practice after cleaning a nozzle?
What principle emphasizes that hose advancement should be a collective effort?
What principle emphasizes that hose advancement should be a collective effort?
What is the recommended approach when stretching hose lines to a fire?
What is the recommended approach when stretching hose lines to a fire?
Which of the following statements best reflects the correct technique for hose line advancement?
Which of the following statements best reflects the correct technique for hose line advancement?
Why is moving quickly when advancing hoses discouraged?
Why is moving quickly when advancing hoses discouraged?
What does the saying 'slow is smooth and smooth is fast' imply about hose advancement?
What does the saying 'slow is smooth and smooth is fast' imply about hose advancement?
What is the primary responsibility of the attack firefighter before entering the fire area?
What is the primary responsibility of the attack firefighter before entering the fire area?
In what stance does the attack firefighter typically move when working with the hose?
In what stance does the attack firefighter typically move when working with the hose?
Which technique is emphasized for hose manipulation by the attack firefighter?
Which technique is emphasized for hose manipulation by the attack firefighter?
What action does the attack firefighter perform before approaching the fire with the hose?
What action does the attack firefighter perform before approaching the fire with the hose?
Which component is NOT part of the attack package that firefighters are instructed to follow?
Which component is NOT part of the attack package that firefighters are instructed to follow?
What is the primary responsibility of the backup firefighter at the front door?
What is the primary responsibility of the backup firefighter at the front door?
Which of these actions is NOT part of the backup firefighter's responsibilities?
Which of these actions is NOT part of the backup firefighter's responsibilities?
What does the 'LFL' acronym stand for in regard to the backup firefighter's assessment?
What does the 'LFL' acronym stand for in regard to the backup firefighter's assessment?
How should the backup firefighter assist with hose advancement?
How should the backup firefighter assist with hose advancement?
What is the significance of sweeping the floor around the door?
What is the significance of sweeping the floor around the door?
What is the primary responsibility of the Control firefighter in a hose management operation?
What is the primary responsibility of the Control firefighter in a hose management operation?
What should recruits remember about pre-loading hose during operations?
What should recruits remember about pre-loading hose during operations?
Which task is NOT part of the Door firefighter's responsibilities?
Which task is NOT part of the Door firefighter's responsibilities?
How does the Control firefighter assist in hose advancement?
How does the Control firefighter assist in hose advancement?
What is a key duty of the Door firefighter when splitting the door?
What is a key duty of the Door firefighter when splitting the door?
When should a 2 1/2” handline be considered for use according to the ADULTS acronym?
When should a 2 1/2” handline be considered for use according to the ADULTS acronym?
What type of fire scenario necessitates the use of two 1 3/4” hose lines?
What type of fire scenario necessitates the use of two 1 3/4” hose lines?
In which situation should a firefighter consider using a 2” or 2 1/2” hose line?
In which situation should a firefighter consider using a 2” or 2 1/2” hose line?
Which of the following is NOT part of the ADULTS acronym for utilizing a 2 1/2” handline?
Which of the following is NOT part of the ADULTS acronym for utilizing a 2 1/2” handline?
What is the primary consideration for selecting the size of the hose line in case of a fire on one floor or more?
What is the primary consideration for selecting the size of the hose line in case of a fire on one floor or more?
Which of the following accurately describes a commercial space in this context?
Which of the following accurately describes a commercial space in this context?
What characteristics differentiate a commercial space from a multi-story office building?
What characteristics differentiate a commercial space from a multi-story office building?
Why are commercial spaces typically considered high-risk locations?
Why are commercial spaces typically considered high-risk locations?
Which of the following types of buildings would not be classified as a commercial space?
Which of the following types of buildings would not be classified as a commercial space?
What does the definition of a commercial space imply about its structure?
What does the definition of a commercial space imply about its structure?
What happens to the nozzle when approaching flows of 250 GPM with a 2” handline?
What happens to the nozzle when approaching flows of 250 GPM with a 2” handline?
What is a consequence of exceeding optimal flow rates with a 2” handline?
What is a consequence of exceeding optimal flow rates with a 2” handline?
What limitation does a firefighter face at higher flow rates with a handline?
What limitation does a firefighter face at higher flow rates with a handline?
Which factor should firefighters consider when operating the 2” handline at high flows?
Which factor should firefighters consider when operating the 2” handline at high flows?
Why is it important for the nozzle firefighter to avoid flows exceeding 250 GPM?
Why is it important for the nozzle firefighter to avoid flows exceeding 250 GPM?
What is a significant advantage of using a 2” line in firefighting operations within multi-level office buildings?
What is a significant advantage of using a 2” line in firefighting operations within multi-level office buildings?
Which characteristic of the 2” line contributes to maximizing its potential in complex building structures?
Which characteristic of the 2” line contributes to maximizing its potential in complex building structures?
How does the 2” line improve operational efficiency in firefighting?
How does the 2” line improve operational efficiency in firefighting?
What impact does the target flow of 210 GPM have on the functionality of the 2” line?
What impact does the target flow of 210 GPM have on the functionality of the 2” line?
What is one of the key identities associated with the 2” line in firefighting operations?
What is one of the key identities associated with the 2” line in firefighting operations?
What is the target flow range for the 2 1⁄2” handline?
What is the target flow range for the 2 1⁄2” handline?
Which nozzle tip provides the highest flow rate at 50 psi for the smooth bore nozzles mentioned?
Which nozzle tip provides the highest flow rate at 50 psi for the smooth bore nozzles mentioned?
Which configuration allows engine companies to effectively utilize a smooth bore's operational range for the 2 1⁄2” hose?
Which configuration allows engine companies to effectively utilize a smooth bore's operational range for the 2 1⁄2” hose?
What is a recommended practice regarding flows over 300 GPM in an attack situation?
What is a recommended practice regarding flows over 300 GPM in an attack situation?
What range of psi is typically not achievable with the 1 3/4” handlines concerning the smooth bore?
What range of psi is typically not achievable with the 1 3/4” handlines concerning the smooth bore?
Where is the 2 1⁄2” attack line usually loaded on a CFD engine?
Where is the 2 1⁄2” attack line usually loaded on a CFD engine?
What are the distinctive color markings of the 2 1⁄2” attack line?
What are the distinctive color markings of the 2 1⁄2” attack line?
If the 2 1⁄2” attack line is not preconnected, where is the female coupling typically found?
If the 2 1⁄2” attack line is not preconnected, where is the female coupling typically found?
What is the typical length of a preconnected 2” attack line?
What is the typical length of a preconnected 2” attack line?
What configuration is common for loading the 2 1⁄2” attack line?
What configuration is common for loading the 2 1⁄2” attack line?
What is the primary movement technique recommended for firefighters when utilizing a nozzle in a large commercial space?
What is the primary movement technique recommended for firefighters when utilizing a nozzle in a large commercial space?
What angle should firefighters aim for while performing the sweeping motion with the nozzle?
What angle should firefighters aim for while performing the sweeping motion with the nozzle?
Which of the following is NOT a benefit of using the sweeping nozzle technique at ceiling level?
Which of the following is NOT a benefit of using the sweeping nozzle technique at ceiling level?
Why is it important to lower the angle with each sweep while using the nozzle in a commercial setting?
Why is it important to lower the angle with each sweep while using the nozzle in a commercial setting?
What is the main goal of the sweeping motion performed by firefighters at ceiling level?
What is the main goal of the sweeping motion performed by firefighters at ceiling level?
What is a critical reason why fires may not be extinguished during firefighting operations?
What is a critical reason why fires may not be extinguished during firefighting operations?
Which of the following best describes the importance of nozzle reach and penetration in firefighting?
Which of the following best describes the importance of nozzle reach and penetration in firefighting?
Which statement accurately reflects the benefits of nozzle characteristics in firefighting?
Which statement accurately reflects the benefits of nozzle characteristics in firefighting?
What can be considered a major challenge faced by firefighters when attempting to extinguish a fire?
What can be considered a major challenge faced by firefighters when attempting to extinguish a fire?
How do nozzle capabilities impact the strategy used during firefighting operations?
How do nozzle capabilities impact the strategy used during firefighting operations?
What is the primary reason the 2” line is considered more maneuverable than the 2 1⁄2” line?
What is the primary reason the 2” line is considered more maneuverable than the 2 1⁄2” line?
Which situation might make using the 2” line more advantageous?
Which situation might make using the 2” line more advantageous?
Which statement accurately reflects the handling characteristics of the 2 1⁄2” line?
Which statement accurately reflects the handling characteristics of the 2 1⁄2” line?
Why is preloading not as effective with the 2 1⁄2” line compared to smaller sizes?
Why is preloading not as effective with the 2 1⁄2” line compared to smaller sizes?
What is the total weight of a charged 50’ section of the 2” line?
What is the total weight of a charged 50’ section of the 2” line?
What happens to a nozzle firefighter's risk of becoming unseated when flowing from a larger hose size?
What happens to a nozzle firefighter's risk of becoming unseated when flowing from a larger hose size?
In which scenario is a nozzle firefighter most vulnerable to becoming unseated?
In which scenario is a nozzle firefighter most vulnerable to becoming unseated?
Which factor is not contributing to the danger of becoming unseated while flowing?
Which factor is not contributing to the danger of becoming unseated while flowing?
Why is the position of the hose significant for nozzle firefighters after making a turn?
Why is the position of the hose significant for nozzle firefighters after making a turn?
What is true about the correlation between hose size and firefighter safety?
What is true about the correlation between hose size and firefighter safety?
Why is it essential to prioritize flow when selecting a handline for firefighting?
Why is it essential to prioritize flow when selecting a handline for firefighting?
What is a potential risk of opting for a handline with less than favorable target flow?
What is a potential risk of opting for a handline with less than favorable target flow?
What aspect of firefighting equipment correlates most directly with extinguishment success?
What aspect of firefighting equipment correlates most directly with extinguishment success?
Which of the following considerations might detract from prioritizing flow in firefighting operations?
Which of the following considerations might detract from prioritizing flow in firefighting operations?
How should a firefighter balance flow and maneuverability when selecting a handline?
How should a firefighter balance flow and maneuverability when selecting a handline?
What is a primary advantage of the triple fold deployment method?
What is a primary advantage of the triple fold deployment method?
Which of the following is a limitation of the triple fold method?
Which of the following is a limitation of the triple fold method?
In what scenario is the triple fold method less effective?
In what scenario is the triple fold method less effective?
How does the number of moving parts in the triple fold method affect its deployment?
How does the number of moving parts in the triple fold method affect its deployment?
What aspect of the triple fold method makes it a reliable choice for quick deployment?
What aspect of the triple fold method makes it a reliable choice for quick deployment?
What is a potential limitation of using the 50' bundle in firefighting operations?
What is a potential limitation of using the 50' bundle in firefighting operations?
Which characteristic of the modified minuteman 50' bundle could lead to deployment issues?
Which characteristic of the modified minuteman 50' bundle could lead to deployment issues?
How does the manageability of the 50' bundle compare to the 100' bundle?
How does the manageability of the 50' bundle compare to the 100' bundle?
What advantage does the 50' bundle provide in terms of splitting the load?
What advantage does the 50' bundle provide in terms of splitting the load?
Which of the following statements is true regarding the deployment speed of the 50' bundle?
Which of the following statements is true regarding the deployment speed of the 50' bundle?
What advantage does the modified minuteman 100' bundle have compared to the triple fold?
What advantage does the modified minuteman 100' bundle have compared to the triple fold?
Which disadvantage is associated with the management of the modified minuteman 100' bundle?
Which disadvantage is associated with the management of the modified minuteman 100' bundle?
How does the modified minuteman 100' bundle improve usability for firefighters?
How does the modified minuteman 100' bundle improve usability for firefighters?
What is a significant drawback of using the modified minuteman 100' bundle?
What is a significant drawback of using the modified minuteman 100' bundle?
What characteristic of the modified minuteman 100' bundle makes it challenging to work with?
What characteristic of the modified minuteman 100' bundle makes it challenging to work with?
What is the recommended length of the initial attack line when using a garden stretch in apartments or townhomes?
What is the recommended length of the initial attack line when using a garden stretch in apartments or townhomes?
Where should the appliance be ideally placed when preparing for a vertical stretch using a garden stretch?
Where should the appliance be ideally placed when preparing for a vertical stretch using a garden stretch?
What is preferred for supplying the backup line during a garden stretch operation?
What is preferred for supplying the backup line during a garden stretch operation?
What is critical for selecting the appropriate hose line when executing a garden stretch?
What is critical for selecting the appropriate hose line when executing a garden stretch?
What does the backup line need to match to ensure effective fire extension coverage?
What does the backup line need to match to ensure effective fire extension coverage?
What must be monitored when the hose is dropped over an open landing to ensure safety?
What must be monitored when the hose is dropped over an open landing to ensure safety?
What is a significant consideration when dropping the acme pack hose through railing spindles?
What is a significant consideration when dropping the acme pack hose through railing spindles?
In terms of procedure, how should the hose be positioned if it is to be charged while hanging over an open railing?
In terms of procedure, how should the hose be positioned if it is to be charged while hanging over an open railing?
Which method of dropping the hose carries a greater risk of it being pulled off the landing?
Which method of dropping the hose carries a greater risk of it being pulled off the landing?
What is a necessary action before charging a hose that has been dropped over an open landing?
What is a necessary action before charging a hose that has been dropped over an open landing?
What is the main benefit of placing engines in series during a water supply operation?
What is the main benefit of placing engines in series during a water supply operation?
Why should interior lines not be gated down below their normal operating pressures?
Why should interior lines not be gated down below their normal operating pressures?
What is the ideal placement of a supply engine in relation to a hydrant?
What is the ideal placement of a supply engine in relation to a hydrant?
What should pump operators do to maintain effectiveness on gated lines?
What should pump operators do to maintain effectiveness on gated lines?
What is the primary reason for having the supply and attack engines operate in series?
What is the primary reason for having the supply and attack engines operate in series?
What is the primary advantage of using a 3” supply line in residential fire incidents?
What is the primary advantage of using a 3” supply line in residential fire incidents?
What flow rate can a single 3” supply line provide over a shorter lay?
What flow rate can a single 3” supply line provide over a shorter lay?
How much water is required to fill a 3” supply line per 100 feet?
How much water is required to fill a 3” supply line per 100 feet?
In terms of speed and efficiency, how does a 3” supply line compare to other supply line options?
In terms of speed and efficiency, how does a 3” supply line compare to other supply line options?
Why is it important that more of the supply engine's water reaches the attack engine?
Why is it important that more of the supply engine's water reaches the attack engine?
What can potentially trigger the Pump Boss to enter 'RPM LIMIT MODE' when using tank water and a master stream?
What can potentially trigger the Pump Boss to enter 'RPM LIMIT MODE' when using tank water and a master stream?
What should an operator do if the Pump Boss has entered 'RPM LIMIT MODE'?
What should an operator do if the Pump Boss has entered 'RPM LIMIT MODE'?
What occurs if the engine RPM is increased prior to opening the discharge?
What occurs if the engine RPM is increased prior to opening the discharge?
What is a critical factor to monitor when using a master stream while on tank water?
What is a critical factor to monitor when using a master stream while on tank water?
What can happen if the operator rapidly opens the deck gun discharge when the pump is at operating pressure?
What can happen if the operator rapidly opens the deck gun discharge when the pump is at operating pressure?
What is the initial action a pump operator should take if too much discharge pressure is detected while the supply driver is at idle?
What is the initial action a pump operator should take if too much discharge pressure is detected while the supply driver is at idle?
If the pressure is still too high after addressing the supply driver's discharge pressure, what should the supply driver do next?
If the pressure is still too high after addressing the supply driver's discharge pressure, what should the supply driver do next?
What alternative method can a pump operator use to manage excessive pressure in subzero temperatures?
What alternative method can a pump operator use to manage excessive pressure in subzero temperatures?
What should the attack operator focus on when using tank water to manage discharge pressure?
What should the attack operator focus on when using tank water to manage discharge pressure?
What is a potential solution if an attack operator has tried all options but still experiences excessive pressure?
What is a potential solution if an attack operator has tried all options but still experiences excessive pressure?
What does the Master Intake Gauge indicate when water is not flowing?
What does the Master Intake Gauge indicate when water is not flowing?
What happens to the pressure reading on the intake gauge when water begins to flow from the pump?
What happens to the pressure reading on the intake gauge when water begins to flow from the pump?
How is residual pressure defined in the context of hydraulic systems?
How is residual pressure defined in the context of hydraulic systems?
What action must be taken to observe a change in pressure from static to residual?
What action must be taken to observe a change in pressure from static to residual?
What is the initial pressure reading considered before any water is discharged?
What is the initial pressure reading considered before any water is discharged?
What does the phrase 'the first line is free' imply in firefighting operations?
What does the phrase 'the first line is free' imply in firefighting operations?
In what scenario should an operator consider the static pressure reading on the intake gauge as the initial pressure?
In what scenario should an operator consider the static pressure reading on the intake gauge as the initial pressure?
Which of the following statements best describes the relationship between defensive operations and hydrant supply?
Which of the following statements best describes the relationship between defensive operations and hydrant supply?
Why should the operator not factor the first line's flow into the remaining supply when it is flowing before the supply is established?
Why should the operator not factor the first line's flow into the remaining supply when it is flowing before the supply is established?
What procedure should an operator follow when the first line is flowing without an established hydrant supply?
What procedure should an operator follow when the first line is flowing without an established hydrant supply?
What occurs when there is a 0-10% drop in static pressure?
What occurs when there is a 0-10% drop in static pressure?
When the residual pressure drops to 85 PSI from 100 PSI, what is the percentage drop?
When the residual pressure drops to 85 PSI from 100 PSI, what is the percentage drop?
What amount of water remains when there is a 16-20% drop in pressure with a 500 GPM usage?
What amount of water remains when there is a 16-20% drop in pressure with a 500 GPM usage?
What is the primary concern when there is a drop of more than 20% in intake pressure?
What is the primary concern when there is a drop of more than 20% in intake pressure?
What does a static pressure of 100 PSI indicate when leaking water from a backup line causes a drop to 90 PSI?
What does a static pressure of 100 PSI indicate when leaking water from a backup line causes a drop to 90 PSI?
In the scenario of an 11-15% drop, how much water is estimated to remain when the drop was caused by a flow of 250 GPM?
In the scenario of an 11-15% drop, how much water is estimated to remain when the drop was caused by a flow of 250 GPM?
Why is it difficult to determine the remaining supply when the drop in pressure exceeds 20%?
Why is it difficult to determine the remaining supply when the drop in pressure exceeds 20%?
What mathematical relationship is used to determine the percentage drop in pressure?
What mathematical relationship is used to determine the percentage drop in pressure?
What is the primary feature of a simple water supply?
What is the primary feature of a simple water supply?
Which of the following best describes the establishment of a series water supply?
Which of the following best describes the establishment of a series water supply?
What is a significant limitation of a simple water supply system?
What is a significant limitation of a simple water supply system?
In establishing a series water supply, which alternative hose sizes are acceptable?
In establishing a series water supply, which alternative hose sizes are acceptable?
What is typically regarded as the top priority in any pump operation?
What is typically regarded as the top priority in any pump operation?
What is the preferred maximum distance for placing the supply pumper from the positive source?
What is the preferred maximum distance for placing the supply pumper from the positive source?
Why is it important to position the supply pumper as close to the hydrant as possible?
Why is it important to position the supply pumper as close to the hydrant as possible?
What consequence might occur if the supply pumper is placed more than 25 feet away from the positive source?
What consequence might occur if the supply pumper is placed more than 25 feet away from the positive source?
Which factor does NOT influence the placement of the supply pumper?
Which factor does NOT influence the placement of the supply pumper?
What is the primary reason to maintain a supply pumper within 25 feet of the positive source?
What is the primary reason to maintain a supply pumper within 25 feet of the positive source?
What happens when the supply pumper increases its discharge pressure?
What happens when the supply pumper increases its discharge pressure?
What situation would cause the supply pumper to increase its discharge pressure?
What situation would cause the supply pumper to increase its discharge pressure?
What is the role of the supply pumper in relation to the attack pumper?
What is the role of the supply pumper in relation to the attack pumper?
Under what condition does the intake pressure at the attack pumper decrease?
Under what condition does the intake pressure at the attack pumper decrease?
How does the supply pumper affect the performance of the attack pumper?
How does the supply pumper affect the performance of the attack pumper?
What must be done once the attack engine’s tank water is depleted to 1/4 of a tank?
What must be done once the attack engine’s tank water is depleted to 1/4 of a tank?
Which statement correctly describes the water usage sequence between the attack and supply engines?
Which statement correctly describes the water usage sequence between the attack and supply engines?
What is the main purpose of the sequence of actions involving the attack and supply engines’ tanks?
What is the main purpose of the sequence of actions involving the attack and supply engines’ tanks?
When does the supply driver need to secure a permanent water supply in this operational scenario?
When does the supply driver need to secure a permanent water supply in this operational scenario?
What does cutting in the supply engine's tank water enable during an operation?
What does cutting in the supply engine's tank water enable during an operation?
What is the actual discharge capacity of a two-stage pump operating in pressure mode if its total capacity is 1500?
What is the actual discharge capacity of a two-stage pump operating in pressure mode if its total capacity is 1500?
Which calculation shows how to determine the actual discharge capacity at 70% efficiency for a 1500 capacity pump?
Which calculation shows how to determine the actual discharge capacity at 70% efficiency for a 1500 capacity pump?
What percentage of the total capacity does a two-stage pump achieve when considered in pressure mode?
What percentage of the total capacity does a two-stage pump achieve when considered in pressure mode?
If a two-stage pump has a total capacity of 1500, what would be the output if it operates at 80% efficiency instead of 70%?
If a two-stage pump has a total capacity of 1500, what would be the output if it operates at 80% efficiency instead of 70%?
What is the difference in actual discharge capacity between a pump operating at 70% versus 50% efficiency with a total capacity of 1500?
What is the difference in actual discharge capacity between a pump operating at 70% versus 50% efficiency with a total capacity of 1500?
In which scenario would the demand for water generally exceed the capabilities of a two-stage pump in pressure mode?
In which scenario would the demand for water generally exceed the capabilities of a two-stage pump in pressure mode?
Which operation is likely to place a strain on the water supply, demanding more than what a two-stage pump can provide?
Which operation is likely to place a strain on the water supply, demanding more than what a two-stage pump can provide?
Which of the following operations would typically not exceed the capability of a two-stage pump in pressure mode?
Which of the following operations would typically not exceed the capability of a two-stage pump in pressure mode?
What type of fire operation is most likely to require water demands that surpass those manageable by a two-stage pump?
What type of fire operation is most likely to require water demands that surpass those manageable by a two-stage pump?
Which operation is least likely to require water demands exceeding a two-stage pump's capabilities, but may still approach its limits?
Which operation is least likely to require water demands exceeding a two-stage pump's capabilities, but may still approach its limits?
In quale scenario non esiste un flusso de volume durante l'operation?
In quale scenario non esiste un flusso de volume durante l'operation?
Quale operation non varya in pressione?
Quale operation non varya in pressione?
Quali delle seguenti operazioni dhe non presentano una pressione constant?
Quali delle seguenti operazioni dhe non presentano una pressione constant?
Quale operazione non permite il flusso de volume?
Quale operazione non permite il flusso de volume?
Quale delle seguenti operazioni permette sia volume che pressione?
Quale delle seguenti operazioni permette sia volume che pressione?
What action does the governor take if the discharge pressure remains between 15 PSI and 45 PSI for over seven seconds?
What action does the governor take if the discharge pressure remains between 15 PSI and 45 PSI for over seven seconds?
In which situation does the governor enter a Low Water Cycle?
In which situation does the governor enter a Low Water Cycle?
What is the programmed engine RPM during the Low Water Cycle initiated by the governor?
What is the programmed engine RPM during the Low Water Cycle initiated by the governor?
Which sequence of events occurs when the discharge pressure is below 15 PSI?
Which sequence of events occurs when the discharge pressure is below 15 PSI?
How does the governor respond if the discharge pressure rises above 45 PSI after being in the Low Water Cycle?
How does the governor respond if the discharge pressure rises above 45 PSI after being in the Low Water Cycle?
What happens if the discharge pressure does not rise above 15 PSI within three minutes?
What happens if the discharge pressure does not rise above 15 PSI within three minutes?
In which situation will the governor set the engine RPM to IDLE?
In which situation will the governor set the engine RPM to IDLE?
What must the pump operator do immediately after the governor cancels the pressure setting?
What must the pump operator do immediately after the governor cancels the pressure setting?
What indicates that there is a NO WATER supply condition?
What indicates that there is a NO WATER supply condition?
What occurs after the discharge pressure rises above 15 PSI within three minutes?
What occurs after the discharge pressure rises above 15 PSI within three minutes?
Flashcards
904K Piercing Nozzle
904K Piercing Nozzle
A type of fire nozzle designed for safely extinguishing fires in enclosed spaces, like attics or compartments.
Built-in Shut-off Valve (K)
Built-in Shut-off Valve (K)
The special feature of the 904K nozzle. This built-in valve allows firefighters to control the water flow.
Hardened Steel Tip
Hardened Steel Tip
The hardened steel tip on the 904K nozzle, which is replaceable.
904K Nozzle Operation
904K Nozzle Operation
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Confined Space Fire Extinguishing
Confined Space Fire Extinguishing
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Steam Expansion for Suppression
Steam Expansion for Suppression
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Hidden Electrical or Gas Services
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Smoke Explosion
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Coverage Area
Coverage Area
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Coupling Size
Coupling Size
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Chrome Plating
Chrome Plating
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Flow Rate
Flow Rate
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Nozzle Outlets
Nozzle Outlets
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GPM (Gallons Per Minute)
GPM (Gallons Per Minute)
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Direct Attack
Direct Attack
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Indirect Attack
Indirect Attack
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Indirect attack principle
Indirect attack principle
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Direct attack principle
Direct attack principle
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Combined Attack
Combined Attack
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Locking Pin
Locking Pin
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Hydraulic Stability System
Hydraulic Stability System
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Fold-out Aluminum Forged Legs
Fold-out Aluminum Forged Legs
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Adjustable Operating Angles
Adjustable Operating Angles
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Attached Safety Strap
Attached Safety Strap
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RAM Flow Rate and Pressure Limit
RAM Flow Rate and Pressure Limit
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RAM Deluge Tip Output
RAM Deluge Tip Output
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RAM Hose Requirement
RAM Hose Requirement
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RAM Friction Loss
RAM Friction Loss
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RAM Flow & Pressure Calculation
RAM Flow & Pressure Calculation
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Friction Loss
Friction Loss
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Tip Rotation
Tip Rotation
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Unmanned Operation
Unmanned Operation
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Spring-Loaded Mechanism
Spring-Loaded Mechanism
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Nozzle Pressure
Nozzle Pressure
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Nozzle Tip Size
Nozzle Tip Size
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Fire Load (FL)
Fire Load (FL)
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Fire Flow Calculation
Fire Flow Calculation
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Pressurized Water (PW) Fire Extinguisher
Pressurized Water (PW) Fire Extinguisher
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UL (Underwriters Laboratories) Classification/Rating System
UL (Underwriters Laboratories) Classification/Rating System
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Max Effective Range
Max Effective Range
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Discharge Time
Discharge Time
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Amerex 240 H Fire Extinguisher
Amerex 240 H Fire Extinguisher
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Ansul Sentry 10 Capabilities
Ansul Sentry 10 Capabilities
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Ansul Sentry 10 Applications
Ansul Sentry 10 Applications
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Ansul Sentry 10 UL Rating
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Ansul Sentry 10 Specifications
Ansul Sentry 10 Specifications
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Ansul Sentry 10 Maintenance
Ansul Sentry 10 Maintenance
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CO2 Extinguisher
CO2 Extinguisher
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UL Rating
UL Rating
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Yearly Inspection
Yearly Inspection
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Class A Foam
Class A Foam
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Class B Foam
Class B Foam
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CFD Foam
CFD Foam
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Foam Application Rate
Foam Application Rate
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Foam Application
Foam Application
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What is the recommended percentage knob setting for Class A fires?
What is the recommended percentage knob setting for Class A fires?
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What is the recommended percentage knob setting for hydrocarbon fuels?
What is the recommended percentage knob setting for hydrocarbon fuels?
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What is the recommended percentage knob setting for polar solvents?
What is the recommended percentage knob setting for polar solvents?
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What is the minimum and maximum pressure range of the Task Force TIP PRO/PAK?
What is the minimum and maximum pressure range of the Task Force TIP PRO/PAK?
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What type of fires is the Task Force TIP PRO/PAK most effective on?
What type of fires is the Task Force TIP PRO/PAK most effective on?
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Eductor Pressure Requirement
Eductor Pressure Requirement
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Maximum Hose Length
Maximum Hose Length
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Recommended Nozzle for 95 GPM Eductor
Recommended Nozzle for 95 GPM Eductor
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Recommended Nozzle for 125 GPM Eductor
Recommended Nozzle for 125 GPM Eductor
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Maximum Hose Length for 125 GPM Eductor
Maximum Hose Length for 125 GPM Eductor
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State Farm Blockers
State Farm Blockers
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9 D06-FSP
9 D06-FSP
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Dispatchers and Accident Location
Dispatchers and Accident Location
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Requesting Freeway Trucks
Requesting Freeway Trucks
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Elkhart Chief XD Nozzle
Elkhart Chief XD Nozzle
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Elkhart Chief Nozzle
Elkhart Chief Nozzle
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Nozzle Reaction
Nozzle Reaction
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Flow
Flow
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Freeman Principle (Fire Attack)
Freeman Principle (Fire Attack)
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Optimizing Water Stream Velocity
Optimizing Water Stream Velocity
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Fire Attack Effectiveness
Fire Attack Effectiveness
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Balancing Hose & Nozzle
Balancing Hose & Nozzle
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Reach and Penetration
Reach and Penetration
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2 1/2" Elkhart Brass XD Shutoff
2 1/2" Elkhart Brass XD Shutoff
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Hose Advancement Teamwork
Hose Advancement Teamwork
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Slow and Steady Hose Advancement
Slow and Steady Hose Advancement
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Patience in Hose Advancement
Patience in Hose Advancement
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Hose Advancement: Attention to Detail
Hose Advancement: Attention to Detail
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Coordination and Communication
Coordination and Communication
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Attack Firefighter
Attack Firefighter
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Three-Point Stance
Three-Point Stance
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Reach, Pressure, Penetration
Reach, Pressure, Penetration
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Only Use the Pistol Grip to Advance
Only Use the Pistol Grip to Advance
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Nozzle Check
Nozzle Check
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Backup Firefighter
Backup Firefighter
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Sweeping the Entry Area
Sweeping the Entry Area
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LFL Check
LFL Check
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Control Firefighter
Control Firefighter
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Door Firefighter
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Pistol Grip Advancement
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Initial Line Selection
Initial Line Selection
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ADULTS Acronym
ADULTS Acronym
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Freeman Principle
Freeman Principle
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What is a commercial space or occupancy?
What is a commercial space or occupancy?
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Why are multi-story office buildings and apartment buildings NOT considered commercial occupancies?
Why are multi-story office buildings and apartment buildings NOT considered commercial occupancies?
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What is a fire load?
What is a fire load?
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How does fire load affect firefighting operations?
How does fire load affect firefighting operations?
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What is compartmentalization in a building?
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Exceeding Optimal Flow Rate
Exceeding Optimal Flow Rate
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Painting the Room
Painting the Room
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Hydraulic Forces
Hydraulic Forces
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Nozzle Control
Nozzle Control
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Uncontrollable Nozzle
Uncontrollable Nozzle
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2-inch hose line
2-inch hose line
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Advantage of using a 2-inch hose line
Advantage of using a 2-inch hose line
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Increased operational envelope
Increased operational envelope
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Potential of a 2-inch hose line
Potential of a 2-inch hose line
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2 1/2" Handline Target Flow
2 1/2" Handline Target Flow
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Indy Stack
Indy Stack
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2" Attack Line
2" Attack Line
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2 ½" Attack Line
2 ½" Attack Line
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Hose Advancement
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Nozzle Firefighter
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Cooling the Roof Structure
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Firefighter Access
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Water Supply
Water Supply
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Larger Lines
Larger Lines
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Fire Fighting Equipment
Fire Fighting Equipment
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Hose line size
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Charged hose weight
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Preloading hoseline
Preloading hoseline
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Most Dangerous Nozzle Position
Most Dangerous Nozzle Position
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Commercial Space Hose Line
Commercial Space Hose Line
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Flow Rate: Top Priority
Flow Rate: Top Priority
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Maneuverability vs. Flow
Maneuverability vs. Flow
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Flow = Extinguishment
Flow = Extinguishment
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Flow: Key to Control
Flow: Key to Control
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High Flow: Always Best
High Flow: Always Best
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Triple Fold Hose Deployment
Triple Fold Hose Deployment
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Triple Fold - Obstacle Limitation
Triple Fold - Obstacle Limitation
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Triple Fold - No Shoulder Carry
Triple Fold - No Shoulder Carry
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Triple Fold - Reduced Deployment Error
Triple Fold - Reduced Deployment Error
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Triple Fold - Faster Deployment
Triple Fold - Faster Deployment
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50' Modified Minuteman Bundle
50' Modified Minuteman Bundle
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100' Triple Layer Load
100' Triple Layer Load
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Modified MinuteMan 100' bundle - Advantages
Modified MinuteMan 100' bundle - Advantages
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Modified MinuteMan 100' bundle - Disadvantages
Modified MinuteMan 100' bundle - Disadvantages
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Preventing 'Spaghetti' with straps
Preventing 'Spaghetti' with straps
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Splitting Cars with Modified MinuteMan
Splitting Cars with Modified MinuteMan
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Modified MinuteMan 100' bundle reach
Modified MinuteMan 100' bundle reach
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What is a garden stretch?
What is a garden stretch?
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What is the recommended hose line length for a garden stretch?
What is the recommended hose line length for a garden stretch?
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How should backup line be supplied in a garden stretch?
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Where do firefighters typically position the appliance in a garden stretch?
Where do firefighters typically position the appliance in a garden stretch?
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How should firefighters consider the placement of an appliance in a garden stretch?
How should firefighters consider the placement of an appliance in a garden stretch?
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Vertical Stretch - Dropping the Bundle Down
Vertical Stretch - Dropping the Bundle Down
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Mind the Hose During Charging
Mind the Hose During Charging
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Landing Layout and Hose Placement
Landing Layout and Hose Placement
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Passing the Female Coupling
Passing the Female Coupling
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Using a Ladder for Vertical Hose Stretching
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Engine Placement
Engine Placement
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Series Supply System
Series Supply System
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Gating Down Interior Lines
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Exterior Line Flow Reduction
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Attack and Supply Engine Operation
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3-inch Supply Line for Residential Fires
3-inch Supply Line for Residential Fires
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3-inch Line Capacity for Firefighting
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Fire Load
Fire Load
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Hose Flow Rate (GPM)
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Freeman Principle in Firefighting
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Pump Boss Limitations with Master Streams and Tank Water
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What does "RPM LIMIT MODE" indicate?
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How to Prevent Pump Boss Errors with Master Streams on Tank Water
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Importance of Pump Boss Understanding
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Excessive Pressure
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Static pressure
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Pressure drop
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Fire flow
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First Line Free
First Line Free
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Why is the first line not factored into calculations?
Why is the first line not factored into calculations?
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What is "The First Line is Free"?
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0-10% Drop
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11-15% Drop
11-15% Drop
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16-20% Drop
16-20% Drop
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Intake Pressure Drop >20%
Intake Pressure Drop >20%
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GPM (Gallons Per Minute) Importance
GPM (Gallons Per Minute) Importance
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Series Water Supply
Series Water Supply
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Simple Water Supply
Simple Water Supply
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Why is a Series Water Supply Preferred?
Why is a Series Water Supply Preferred?
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Failsafe in Series Supply
Failsafe in Series Supply
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Limitation of Simple Water Supply
Limitation of Simple Water Supply
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Supply Pumper Placement
Supply Pumper Placement
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Maximum Distance from Hydrant
Maximum Distance from Hydrant
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Minimizing Friction Loss
Minimizing Friction Loss
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Rapid Water Delivery
Rapid Water Delivery
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Reliable Water Supply
Reliable Water Supply
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Boosting Attack Pumper Pressure
Boosting Attack Pumper Pressure
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Increased Intake Pressure
Increased Intake Pressure
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Discharge Pressure
Discharge Pressure
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Intake Pressure
Intake Pressure
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Pressure Boosting
Pressure Boosting
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Water Tank Management
Water Tank Management
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When is a 2 1/2" Hose Line Recommended?
When is a 2 1/2" Hose Line Recommended?
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Commercial Space or Occupancy
Commercial Space or Occupancy
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Two-Stage Pump Discharge Capacity (Pressure Mode)
Two-Stage Pump Discharge Capacity (Pressure Mode)
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Calculating Two-Stage Pump Discharge
Calculating Two-Stage Pump Discharge
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High Water Demand Situations
High Water Demand Situations
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Multiple Line Operations
Multiple Line Operations
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Quick Attack Operations
Quick Attack Operations
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Deck Gun Operations
Deck Gun Operations
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Ladder Pipe Operations
Ladder Pipe Operations
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Attacco de foco individual.
Attacco de foco individual.
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Operation de multiple lineas.
Operation de multiple lineas.
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Operation de escala.
Operation de escala.
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Attacco rapide.
Attacco rapide.
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Operation de standpipe.
Operation de standpipe.
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Low Water Cycle
Low Water Cycle
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Normal Operation
Normal Operation
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Programmable Low Water Cycle Values
Programmable Low Water Cycle Values
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Governor's Role
Governor's Role
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Low Water Cycle Purpose
Low Water Cycle Purpose
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NO WATER Supply
NO WATER Supply
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IDLE Mode
IDLE Mode
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Restart Pump Operations
Restart Pump Operations
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Manual Pump Restart
Manual Pump Restart
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Study Notes
Actual Discharge Capacity of Two-Stage Pump
- Actual discharge capacity in pressure mode is approximately 70% of the total capacity.
- For a pump with a total capacity of 1500 gallons per minute (GPM), the discharge capacity in pressure mode is 1050 GPM.
- Demand exceeding pump capacity can occur during multiple line operations, quick attack operations, deck gun operations, and ladder pipe operations.
TRIPLE FOLD
- Advantages:
- Deploys faster than modified minuteman loads.
- Fewer moving parts, reducing deployment errors.
- Disadvantages:
- Less versatile around obstacles like cars and fences.
- Lacks a shoulder load feature for tight spaces.
MODIFIED MINUTEMAN – 50’ BUNDLE
- Advantages:
- Easier to shoulder carry; shorter than the 100' bundle.
- Easier to split cars than a triple layer load.
- Disadvantages:
- 50' length may be insufficient to reach targets.
- Slower deployment compared to a triple fold.
- More moving parts, potentially increasing deployment issues.
MODIFIED MINUTEMAN – 100’ BUNDLE
- Advantages:
- More versatile around cars and fixed obstacles.
- Shorter and more manageable dead stack thanks to bundling.
- Provides more usable hose near the entry point.
- Easier to split cars, reducing dragging.
- Disadvantages:
- Can be difficult to manage on the shoulder, prone to "spaghetti."
- Slower deployment compared to the triple fold.
- More moving parts, potentially increasing deployment issues.
- Added Information:
- Useful for garden stretches of apartments, condos, or townhomes, covering the fire unit and an adjacent unit.
- A 100' Acme pack is often sufficient.
- Preplanning and familiarity with the district is critical for hose line selection.
- A backup line, typically a secondary 2 1⁄2" or 3" trunk line, is preferable, matching lengths to cover potential fire extensions.
- Exterior Lines: Reducing flow is usually not a safety concern for exterior crews. Pump operators must ensure effectiveness.
- Interior Lines: Gating down interior lines to set pressure (after other attempts) is acceptable; avoiding gating to water other areas is key.
- Vertical Stretch—Dropping the Bundle:
- A 100' Acme pack is carried to the target landing.
- Interior crews pass the female coupling and drop it to the pump operator below.
- The hose can be dropped over railings.
- Dropping over open landings requires caution to prevent dragging.
- Supply Engine Placement: Placing an engine as close as possible to the hydrant minimizes friction loss. Series systems are backup systems. Aim for within 25 feet of the hydrant
- 3" Supply Line Information:
- Provides enough flow for most residential fires.
- Requires roughly 37 gallons of water per 100 feet to fill.
- Readily connected, delivering up to 800 GPM over shorter distances. Capable of primary and backup handlines
- Master Stream Considerations on Tanker Water:
- Rapid master stream discharge might exceed tank capacity. This triggers "RPM LIMIT MODE." Decreasing RPM or gating discharge restores pressure. Increasing RPM will worsen the issue.
- Excessive Discharge Pressure:
- Typically results from high intake pressure. Pump Boss engines throttle down to reduce pressure.
- If idle, communicate with the supply driver to adjust discharge pressure.
- If both are idle, the supply engine can go into neutral.
- Dump excess pressure through a non-critical discharge (tank fill).
- In freezing temperatures, alternate tank water and supply to prevent ice formation. If necessary, gate down attack intake valves. If needed, gate down attack lines to maintain hose pressure.
- Supply Pumper Support for Attack Pumper: Increase discharge pressure to increase intake to the attack pumper.
- Conserving Attack Engine Water: Use the attack engine's tank water first. Switch after it reaches ¼ full.
- Simple vs. Series Water Supply:
- Simple Supply: A direct connection, limited by the hydrant.
- Series Supply: A separate supply engine to the attack engine, providing redundancy.
- Static and Residual Pressure:
- Static: Pressure when no water flows.
- Residual: Pressure during flow from the hydrant.
- FIRST LINE IS "FREE": The initial attack lines, before a supply is established, are not considered in overall supply calculation. Use initial intake pressure as the static pressure.
- Hydrant Supply Calculation:
- 0-10% static pressure drop = 3x initial flow remaining.
- 11-15% = 2x.
- 16-20% = 1x.
-
20% = ~ half.
- High static doesn't reflect GPM until known flow. Connections to the same water main impact available supply. 10 PSI residual is a safety minimum.
- Single fire attack line: Pressure and volume are required.
- Multiple line operation: Pressure and volume vary.
- Ladder pipe operation: Pressure is required but volume is not a factor.
- Quick attack/deck gun: Pressure and volume are required.
- Standpipe operation: No pressure and volume required directly.
- Overhaul: Pressure and volume are required.
Pump Governor Low Water Cycle
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If discharge pressure is below 45 PSI but above 15 PSI, the governor enters a "Low Water Cycle".
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The message display flashes "LO WATER".
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The governor sets the engine RPM to 1100 RPM.
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If pressure doesn't rise above 45 PSI within 7 seconds, the governor sets the engine RPM to IDLE.
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The governor repeats the Low Water Cycle as long as the discharge pressure remains between 15 to 45 PSI.
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If the pressure rises above 45 PSI, the engine resumes normal operation.
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The RPM and PSI values for the Low Water Cycle are programmable.
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NO WATER SUPPLY:
- If discharge pressure is below 15 PSI, the governor sets the engine RPM to IDLE and the message display flashes NO WATER.
- If discharge pressure rises above 15 PSI within three minutes, the governor enters the Low Water Cycle.
- If discharge pressure does NOT rise above 15 PSI within three minutes, the governor switches to IDLE MODE and cancels the pressure setting.
- If the governor switches to IDLE Mode and cancels the pressure setting, the pump operator will have to take action to restart pump operations (press PRESET and/or rotate the control knob to select the pressure setting).
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Description
This quiz covers the detailed specifications and operational guidelines for the 904K piercing nozzle. Learn about its material composition, connection types, pressure resistance, and various uses in firefighting scenarios. Understand how to effectively operate this essential firefighting tool.
