Water and Fuel Systems Maintenance (WFSM) Set B Volume 3 Practice Test

These questions are part of the practice quiz. Start practicing

• Which problem would cause a vibrating horn to sound in the Type 3 system?
• What size mesh screen is used in the receiving strainer for a Type 4 system?
• How often should the 41AF-10 valve be inspected?
• What is the primary purpose of a water distribution system?
• Which switch on the Type 4 pump control panel resembles a red mushroom?
• In a Type 4 system, what occurs when the high level alarm is triggered?
• Identify a method for detecting a water leak in a distribution system.
• What action does the flush valve perform in loop flush mode when it is deenergized?
• What is hydraulic hammer in fuel systems?
• Which materials are typically used for constructing water storage tanks?
• Describe the purpose of a fuel injection system.
• Which valve is used as the flush valve in a type 4 system?
• What type of diagram is displayed on the type 3 pump control panel?
• Who is responsible for defining the temperature rating for motors used with the fueling pumps in the Type III system?
• What is a common fix for a water system that has low pressure due to leaks?
• At what percent full does the switch assembly automatically energize the fuel transfer pump on the product recovery tank in a Type 3 system?
• At what differential pressure must the receiving strainer in the Type 3 system be cleaned?
• How many gallons of fuel must be pumped to flush the hydrant loop of a type 3 system containing 42,000 gallons?
• What type of pump is used as the fuel transfer pump on the product recovery tank in a Type 3 system?
• When the cover chamber pressure of the 90AF-8 refueling control valve matches the inlet pressure, what will the valve do?
• What is the main purpose of the pantograph pressure control valve during fuel operations?
• What is a recommended action in the maintenance procedure for a diesel fuel filter?
• How do aboveground fuel storage tanks differ from underground tanks?
• When an aircraft is refueling, the 362AF-8 hydrant control valve opens by using the?
• How can the closing feature and rotary disc assembly of the 413AF-5A high level shut off valve be tested?
• Which type of single point nozzle is used on the type 4 hose end pantograph?
• Which maintenance activity helps extend the life of water pipes?
• What can trigger an alarm in a fuel control system?
• Which of the following components is part of the 302AF fueling and defueling valve system?
• Which GPM rate of flow can the low range differential pressure transmitter sense and indicate on the return venturi in the Type 3 system?
• What is the primary purpose of the pressure indicating transmitters in the Type 3 system?
• What preventive maintenance is crucial for ensuring fuel quality in a Type 4 system?
• What is the main consequence if the deadman control is not pressed within the specified time during pantograph flushing?
• How do you reset the system to refuel after activating an emergency stop switch at the type 2 hydrant outlet?
• What is the first step in properly shutting down a fuel system?
• What is the impact of a clogged receiving strainer in a Type 4 system?
• Which method is least effective when dealing with low water pressure?
• As demand for fuel flowing through the 362AF-7 refueling control valve decreases in a Type 4 system, where does flow increase?
• What is the purpose of an air separator in a water system?
• How many differential pressure transmitters are piped into the return venturi on a 2400 gpm Type 3 system?
• When the issue venture senses 600 gpm and the return venturi senses 40 gpm or less for 10 seconds, what happens to the lead pump?
• In pantograph mode, what is the effect of the solenoid when it energizes?
• Why is the flow installed under the disc of the main valve body on the 50AF-2 pressure relief valve?
• When does the high level light go out after the operator acknowledges an activated alarm on a Type 4 storage tank?
• Which component is crucial for maintaining the integrity of fuel quality in the storage tank system?
• What type of ground rods are hydrant outlets grounded to in the type 2 piping system?
• How often should you operationally inspect the 90AF-8 refueling control valve?
• What is the primary function of the return venturi in a fuel system?
• What are the risks associated with improper fuel storage?
• What is the gallon per minute rating of the return venturi in the Type 3 system?
• What happens to the main valve during pantograph flushing based on action from solenoid B on the 58AF-9-1 defuel/flush valve?
• To adjust the flow rate of the differential control on the 41AF rate of flow control valve, which direction should the adjustment screws be turned?
• What is a backflow preventer?
• If the pump is running, but no fuel is delivered, what should be your first diagnostic step?
• Describe the function of an overflow pipe in water tanks.
• What is the primary purpose of the orifice plate on the 302AF fueling and defueling valve?
• What is the function of a vacuum pressure gauge on a fuel system?
• Approximately how many seconds should it take for the fueling valve to open when adjusting the control valve flow control on the 302AF?
• Explain the procedure for conducting a leak test on fuel lines.
• What type of piping is used with the Type 4 issue filter separator in the system loop when a 6 inch pipe is used?
• What occurs when the return venture senses 560 gpm or more for 60 seconds while the issue venture has a 600 gpm flow on the bypass control valve?
• Which valve is used on a Type 4 cut and cover tank for high level shutoff?
• What should you do last after adjusting the high pressure on the 51-AF-4 valves pressure relief controls before leaving the area?
• What does the first symbol in a rung of ladder logic represent?
• At what psi does the pressure reducing control deliver constant pressure on the 90AF-8 refueling control valve?
• What does an increase in fuel flow rate indicate to the system automatically?
• What is a common practice for maintaining fuel storage tanks?
• What is the consequence of ignoring water pressure monitoring?
• When refueling and defueling at the same time, where does the fuel begin to defuel go in a type 3 system?
• When a Type 4 system is in loop flush mode, what happens to one of the solenoids on the 58AF-9-1 defuel/flush valve?
• What should be regularly monitored to ensure the effectiveness of a fuel system?
• What indicates a high level alarm on a Type III operating storage tank?
• What is the significance of the cross-connection control program?
• What condition causes the defuel pump to stop before air can enter the piping system?
• What size piping is used to connect the pressure reliefs and other drains to the product recovery tank in a Type III system?
• What type of valve is the 362AF-7 in a Type 4 refueling system?
• What component opens the electrical control circuit when the defuel pump shuts off?
• What is the first step to take when investigating a water system for performance issues?
• What do blue lines represent on the Type 3 pump control panel line drawing?
• To what precision must the fueling pump and motor in the Type 3 system be aligned?
• On the 90AF-8, the pressure relief control is set to what pressure?
• What is generally a required action before draining a fuel line?
• When the CDHS-3 on the 302AF fueling and defueling valve trips, where does the pressure travel?
• What type of piping, 12 inches in diameter, is used in the hydrant loop of a Type 3 system?
• What is a primary indicator of proper operation for the 90AF-8 refueling control valve?
• What type of steel is used in the control tubing of the Type 3 system?
• The Thy 40-28G bypass valve (BPV) opens and fuel bypasses the receiving separators when which differential pressure is sensed?
• What is the purpose of the bypass control valve in a fuel system?
• Which valve serves as the tank outlet valve in a Type 3 system?
• If low water pressure is detected, what is a primary action to take?
• What is the function of the solenoid switch in the Type 3 system?
• When the nearest bulk storage tank is one mile from the fueling apron, which tank can be used as an operating storage tank on the Type 3 system?
• What does the acronym "MSDS" refer to in fuel handling?
• What pressure rate must you establish before setting the pressure relief control on the 90AF-4 refueling flow control?
• What change was made to the 352AF adapter in addition to removing the float for rapid defueling?
• Where are pressure indicating transmitters located in a Type 4 system?
• What maintenance task is often required for aboveground fuel tanks?
• Which GPM points must be calibrated on the return venturi's high range differential pressure transmitter?
• What is one purpose of the flow switch in the Type 3 system?
• What type of piping is used on the pressure relief and drain system for a 2 inch pipe in a Type 4 system?
• To properly calculate the differential pressure required for the pressure differential shutoff (CDHS-3), what must you identify first?
• What maintenance measure is crucial during a seasonal change?
• What does the 352AF hydrant adapter control to prevent air from entering the installed piping system?
• What should be done if a water quality test indicates contamination?
• During pantograph flushing, how many seconds does the operator have to press the deadman control on the refueling control valve before pumps shut off due to high pressure?
• Which component closes the main valve of the 302AF refueling/defueling valve in case of excess flow at the hydrant outlet?
• If the third pump is called on automatically in a type 3 system and fails to start, what occurs next?
• Why is it important to maintain clear signage near fuel storage areas?
• Regular maintenance on water systems should include what critical aspect?
• What type of solenoid is used on the 90AF-8 refueling control valve?
• At what maximum differential pressure does the 352AF hydrant adapter's automatic bypass valve open?
• What is the role of a fuel pump in a fuel system?
• Which component is key in a water treatment plant?
• Which factors should be evaluated if a water supply issues occur?
• During a visual inspection of a fuel tank, what is a critical sign to check for?
• What might you check for if you suspect a leak in your water system?
• Which personal safety equipment is essential during fuel system maintenance?
• To what psi differential is the differential pressure control on the Type 4 emergency shut off valve adjusted?
• What is the primary purpose of a tank vent in a fuel system?
• After refueling an aircraft and the lead pump deenergizes, at what PSI does the 58AF-9-1 defuel/flush valve close?
• What should be done to prevent bacteria growth in fuel systems?
• During refueling, which component holds the defuel side of the main valve inlet closed in the 302AF fueling and defueling valve?
• How does the high-high level alarm signal on a Type III operating storage tank?
• Which component in the lateral control pit automatically cuts off the defuel pump when a predetermined amount of inches of mercury is reached?
• What is the difference between potable and non-potable water?
• Which of the following is a preventive measure to ensure fuel system reliability?
• How many manual valves are found in the lateral control pit of the Pritchard system?
• How does the system respond if the operator fails to maintain pressure with the deadman control?
• What is a sensible practice to prevent low water pressure?
• When is the solenoid on the 58AF-3 pressure control valve in the type 4 system deenergized?
• What is the purpose of the 59AF-9-1 defuel flush in the type 4 system?
• The presence of what in the water distribution system can lead to low pressure?
• What is the primary purpose of environmental signage in fuel areas?
• What class must a type 3 operating storage tank level indicator servo compartment be approved for?
• To remedy a leakage on the Philadelphia hydrant adapter, which component may need to be replaced?
• To maintain safe fuel storage, what must be regularly checked?
• What role do surge tanks play in water systems?
• What can fluctuation in temperature lead to in fuel tanks?
• What maintenance activity can prevent backflow issues in a water system?
• Which component is primarily responsible for separating water from fuel in a Type 4 system?
• Which of the following is NOT typically found in a fuel handling safety protocol?
• Solenoid B on the 58AF-9-1 defuel/flush valve energizes to allow the main valve to open only when the?
• What is the term for the three-step process of checking inputs, executing the program, and updating outputs in a programmable logic controller?
• What must be done to the 40-27G filter/separator valve to get it to operate again after it has closed due to high differential pressure?
• What is one common cause of fuel system failures?
• Which delivery pressure causes the fueling side of the 302AF fueling and defueling valve to close when adjusting the loading pressure relief control counterclockwise?
• What are the principal components of a fuel system?
• What is one primary reason for visually inspecting fuel tanks regularly?
• What is an important environmental concern related to fuel systems?
• Which component houses the defuel pump for the type 3 system?
• What type of maintenance is critical for preventing leaks in the Philadelphia hydrant adapter?
• How does a backflow preventer enhance the safety of a water distribution system?
• What is the significance of conducting a risk assessment for a water system?
• Which valve is used as the receiving filter separator control valve in a Type 4 system?
• When the flush valve on a Type IV system is placed in the pantograph flush mode, the solenoid is:
• During aircraft refueling in a Type 4 system, under what conditions does only the lead pump continue running?
• Which conditions can exacerbate low water pressure in a system?
• What is indicated by the activation of the emergency stop switch in a Type 4 fuel system?
• What is the effect of high chloramine levels in treated water?
• What are the positions of the pump control switch?
• In pantograph flush mode, what does the solenoid on the 136AF-5B flush valve do?
• Where does the remote-sensing pressure reducing control on the 362AF-8 hydrant control valve sense pressure from?
• When does the solenoid on the 58AF-3 pressure control valve energize to close the valve?
• How is leakage minimized during a complete seal failure on the Type 3 fueling pump mechanical seal?
• Which valve opens during the idle mode to allow defueling in the type 3 system?
• What common issues can arise from inadequate fuel filtration?
• Why should water pressure be monitored continuously?
• How can sediment in a water system be addressed?
• What must be adjusted to control the differential pressure in the 302AF fueling and defueling valve system?
• Which material is commonly used for water pipes and what is its advantage?
• At what pressure in psi does the pantograph pressure control valve relieve excess pressure during refueling?
• What is the function of the solenoid in a type 4 system when entering the loop flush mode?
• What type of API pump is used as fueling pumps in the Type 3 system?
• What is the impact of extreme temperature on fuel quality?
• Most emergency service calls involve which of the following issues?
• What is the primary reason for using PVC in water distribution systems?
• What component restricts the flow of fuel in the control tubing of the 302AF fueling/defueling valve?
• An air sense pressure setting of 65 psi on the Brooks valve relieves excess nozzle pressure when it reaches?
• When a magnet is placed on the defuel keep it simple system switch, which solenoid is energized to open the defuel valve?
• At what psi does the 58AF-3 pressure control valve close?
• What does the u-bend in the panel hydrant system pit defuel line accomplish?
• How long can an operator wait before pumps shut off during pantograph flushing?
• What is the primary method of receiving fuel in a Type 4 system?
• How does ambient air temperature affect fuel storage?
• What is the impact of lead in drinking water systems?
• Which method is commonly used to control corrosion in water systems?
• Which type of displacement meter is used in the receiving line of a Type 3 system?
• When a type 4 system is placed in the loop flush mode, what action does the solenoid on the 136AF-5B flush valve perform?
• Where is the issue venturi tube located on the Type 3 system?
• What effect might fuel contamination have on an engine?
• What type of fueling pumps are used in a Type IV cut and cover tank and what is the capacity?
• What type of fuel dispensing hose is installed on a type 4 hose end pantograph?
• Which of the following is essential for water purification?
• What condition would cause a resonating horn to sound on a Type 4 system?
• What is one potential consequence of a leaky fuel line?
• How much pressure in psi is the type 4 refueling control valve adjusted to maintain pressure at the skin of the aircraft?
• In loop flush mode, what activation occurs when the main valve is opened?
• What can be removed from the strainer orifice used on the 50AF-2 pressure relief valve?
• When is the second pump called off while refueling in a Type 4 system?
• What should be done if you notice fluctuating water pressure?
• In the modified Panera system, how many tanks are required for defueling aircraft?
• What is a recommended corrective measure for addressing low water pressure in a system?
• If the cover chamber pressure on a 90AF-8 refueling control valve is between the inlet and outlet pressure, what action occurs?
• How frequently should water samples be tested for contamination?
• Where is the ball float for the 413AF-5A high level shutoff valve located on an operating storage tank?
• How many hydrant outlets are served by each Panero pit?
• What is the function of a water filter?
• How can blockages in a water system typically be addressed?
• Which condition prompts the operator to maintain control on the deadman switch during refueling?
• What function does the solenoid perform in the 302AF fueling and defueling valve?
• What do the blue lines on a Type 4 pump control panel graphic display indicate?
• What type of swivel joints are installed on a type 4 hoseless pantograph?
• What size suction header is used in the Type 3 system?
• How often is the 134AF defueling control valve operationally inspected?
• What is triggered to close the main valve in a flush mode system?
• What psi backpressure does the pressure relief control maintain on the high level shutoff valve on a Type 4 underground operating storage tank?
• Which method can be used to test fuel quality?
• What is one common indicator of fuel contamination?
• What is defined by the term "water hammer"?
• What is a common effect of fuel contamination?
• What is the function of the 40-27G valve in a Type 4 system?
• What position is solenoid A in on the 58AF-9-1 defuel flush valve when refueling in automatic mode of a Type 4 system?
• Which of the following actions occurs when a type 4 system is set to pantograph flush?
• What is the recommended storage temperature range for fuel?
• What happens to the lead, second, and third refueling pumps when the issue venturi senses 1800 gpm and the return venturi senses 100 gpm for 15 seconds?
• Why is biocide added to fuel?
• The standard pressure setting on the 503AF-2 pressure valve's pressure relief control is based on the 90AF-8 refueling valve's pressure. How much is it set above normal?
• Which of the following is NOT a function of the 40-27G filter separator control valve?
• What is a potential consequence of using contaminated water for irrigation?
• Why is it essential to maintain optimal water pressure in a distribution system?
• What is the primary purpose of the 40-27G filter separator in a Type 3 system?
• Which factor can contribute significantly to a decrease in water flow?
• How many seconds must the flow rate stay above 700 gpm through the Type 4 return venturi before the second pump is called off?
• Which type of separator can be found in the Type 3 system to manage fuel quality?
• Which valve is utilized as an overfill valve for the product recovery tank in the Type 3 system?
• What is the maximum electrical resistance measured in ohms allowed through the entire type 4 pantograph?
• Which of the following can be an indicator of a blockage in a water system?
• What is the timing requirement for the deadman control during pantograph flushing procedures?
• What is the primary purpose of having 5 psi in the lateral piping on the 51 AF-4 rapid defuel valve?
• Why is water quality testing critical in water systems?