ARFF DRIVER-OPERATOR QUESTIONS ANSWERED CORRECTLY & GRADED A+

ARFF DRIVER-OPERATOR QUESTIONS ANSWERED CORRECTLY & GRADED A+ If the solution temp is higher than 70 degrees, no correction applies. If the temperature is lower than 70 degrees, add 0.1 unit of expansion for each 3 degrees below 70 -Answer- Expansion ratio Identify THREE items that are covered under a periodic inspection of a fire apparatus -Answer- -Flushing pump and tank -Cooling system hoses -Power saws If you are doing a maintenance check on items such as pump valves, fluid levels, gauges, and batteries, you would document your findings on the: -Answer- Daily fire apparatus records The hand line nozzle test: -Answer- Analyses effect foam patterns produced from each nozzle setting. All of the following are equations used in the foam solution-concentration test EXCEPT: -Answer- Rv Identify THREE reasons for using inspection reports. -Answer- -Referrals -Data References -Replacement Place the steps for conducting the turret ground pattern test in the correct order. -Answer- 1. Discharge the foam onto a paved surface for 30 seconds at the specific pressure, in both the straight stream and fully dispersed nozzle settings. 2. Immediately after foam discharge has stopped, place markers, such as cones, around the outside perimeter to preserve the identity of the foam pattern as it fell on the ground. 3. For purposes of defining the edge of the pattern, disregard and foam that is less than 1/2 inch deep 4. Plot the distances between the markers on graph paper. 5. Measure the distance from the nozzle to the end of the effective foam pattern and plot the results on graph paper. Identify THREE reasons for using inspection reports -Answer- -Insurance -Data References -Replacement All of the following statements about an ARFF apparatus are TRUE EXCEPT: -Answer- There is a new technology that maintains a constant apparatus weight with either a full or empty water/foam tank Identify THREE conditions that could cause you to lose control of your ARFF Apparatus. -Answer- -Liquid surge within the water tank -Traveling at 50 mph around a turn -Wet, icy roadways A liquid surge effect is defined as: -Answer- the movement of liquid in an ARFF apparatus due to changes in speed or direction. Identify THREE TRUE statements about airfield light signals -Answer- -Light signals are used in areas designed for aircraft use when radio communications fail -A steady green light indicates that any aircraft or other apparatus may proceed -An alternating green and red light indicates that traffic can proceed using extreme caution A runway distance remaining sign displaying the number "6" indicates to the pilot that there are: -Answer- 6,000 feet of runway remaining A painted or lighted "X" indicates that a runway is: -Answer- Closed to aircraft and vehicle operations To turn an ARFF apparatus: -Answer- Decelerate before the turn, turn, and then accelerate. When driving on a downgrade, what should your rpm gauge read? -Answer- Below redline Identify THREE TRUE statements about railroad crossings. -Answer- -An ARFF apparatus must come to a complete stop before entering a railroad crossing zone. -Check to your left and right before proceeding across the tracks -Cross the tracks without delay once both directions are clear All of the following statements about managing underpasses and low clearance areas are TRUE EXCEPT: -Answer- Adjust the ARFF apparatus height to gain clearance through height restricted areas Place the steps for backing into a restricted spaced in the correct order. -Answer- 1. Activate your turn signal 2. Drive forward past the markers 3. Use your side view mirrors 4. Maintain visual contact with the spotter when backing 5.Judge the apparatus's clearance around the obstacles 6. Back the apparatus turning into the marked stall 7. Come to a complete stop in a smooth and safe manner within six inches of the finish line. Identify THREE steps for successfully completing the diminishing clearance exercise. -Answer- -Stop at the finish line without any part of the ARFF apparatus crossing the finish line -Pass under the vertical clearance prop if adequate clearance exists, or if adequate clearance does not exist, come to a complete stop -Do not move the apparatus in reverse unless you can see your spotter All of the following statements for driving an ARFF apparatus are TRUE EXCEPT: -Answer- Always use a spotter when traveling forward into a restricted space When maneuvering around obstructions in the roadway, do all the following EXCEPT: -Answer- Judge apparatus clearance around the obstruction All of the following are primary uses of water in ARFF operations EXCEPT: -Answer- Extinguishing fuel spills and fuel fires Dry chemicals can only be used on: -Answer- Class A, B, and C fires Identify THREE characteristics of a fuel spill that require blanketing with foam to prevent the release of flammable vapors. -Answer- -More than 10 feet in any direction -Continuous -50 square feet in area Dry chemicals are compatible with: -Answer- AFFFs Raw Liquid foam that is stored in containers until it is mixed with water and air is called: -Answer- Foam concentrate Identify TWO laws that apply to water and its ability to absorb heat and turn a liquid into a vapor: -Answer- -Law of Specific Heat -Law of Latent Heat of Vaporization Identify TWO TRUE statements about auxiliary agents. -Answer- -They must be compatible with primary agents -They must be used on the specific class of fire for which they are rated Identify THREE ways that foam works to extinguish a fuel-related fire. -Answer- -Separating the fuel from the fire -Cooling the fuel and heated areas -Smothering the fire Sparks from friction or electrical components can increase the ________ of a fuel spill. -Answer- Probability of ignition Re-ignition is also know as: -Answer- Flashback Identify THREE static sources of water -Answer- -Lake -Swimming pool -Ocean Identify THREE low-energy, foam proportioning systems. -Answer- -Batch mixing -Installed in-line eductor -Balanced pressure High-energy foam proportioning systems, known as CAFS, differ from low-energy systems because with high-energy foam proportioning systems: -Answer- Air is injected into the foam solution before it is discharged from the nozzle The roof turret typically discharges between _______ gallons of foam per minute. -Answer- 500 - 1,500 An ARFF apparatus should always be positioned: -Answer- Upwind During the control phase of an exterior fire, the process that should take precedence is: -Answer- Insulating and isolating the occupied portions of the aircraft. Identify TWO TRUE statements about fire fighting operations when forward firing munitions are involved in the fire. -Answer- -Assemble at the designated withdrawal area, with the rear of the apparatus facing the designated crash point -Sound the proper withdrawal signal All of the following is information that a driver/operator should receive about an incident prior to arriving at the incident EXCEPT: -Answer- The number of flight personnel available to help with the rescue