Aviation Boatswain’s Mate – Fuels (ABF) Practice Test

These questions are part of the practice quiz. Start practicing

• The inside diameter ranges from 200 millimeters to 250 millimeters in increments of how many millimeters?
• What is the most commonly used rotary vane pump in the JP-5 below deck systems?
• What equipment on shore refueling stations provides a continuous check on the cleanliness of the fuel passing through the filter/ separators?
• Which statement best describes a key difference between shore-based hoses and afloat-unit hoses?
• Which component is positioned last among the following to ensure disk centering in a manifold's valve body?
• What is the NATO number for JP-5?
• What is the bowl speed of the JP-5 300 GPM centrifugal purifier?
• Which materials correctly describe mobile refueler tanks?
• What component on the LIMITORQUE valve operator operates the OPEN and CLOSE position indicator lights for the valve?
• How far should mobile refueling trucks be parked from inhabited buildings?
• What type of gauge is normally installed on the service filter to read pressure changes from inlet and outlet chambers?
• Water-in-fuel emulsions appear as what?
• The pressure refueling nozzle used for bottom loading a mobile refueler is designed to receive product at a minimum of how many gallons per minute?
• What is the flashpoint of JP-5?
• How often must the standard cards be replaced within the CCFD?
• What is the minimum capacity of a refueler/defueler truck tank to safely conduct refueling operations?
• Which statement about the Pensky-Martin tester is true?
• In a defueling operation, which person is typically the final sign-off on the documentation?
• Mobile refueler tanks are made from what type of material?
• What is the maximum allowable time for product circulation on a returner that is more than one half full?
• The top of the wing tank is at which deck level on the ship?
• On a manifold, what connects the main-side valve to the tank-side valve?
• What is the major difference between hoses used at shore facilities and afloat units?
• Which figure represents the number of ball bearings used to attach the collar?
• The bottom of the body is attached to the inlet by how many ball bearings?
• How often should you inspect bonding and grounding cables, clamps, and plugs?
• What is the range of beats per minute associated with the purifier’s operation?
• In a rotary vane pump, which component houses the ball bearings and mechanical seals?
• What are the maximum allowed values for free water and sediment in JP-5?
• What grade is the oil in the oil sump?
• For a sediment test with CCFD, how much fuel is used?
• Which pair of sample volumes is used for sediment and water tests with the CCFD?
• What device ensures the disk is centered into the base of the valve body in a manifold?
• The high level shutoff on mobile refuelers functions as what kind of safety feature?
• What unit is used for the inside diameter measurements described?
• To safely conduct refueling operations, what minimum number of gallons of product (fuel) should a refueler/defueler truck tank contain?
• In the CCFD, what is the maximum detection limit expressed for solid contamination?
• During fueling operations near an aircraft, what position should the refueler truck assume?
• Sediment in JP-5 most commonly looks like which of the following?
• What disk provides a rotating casing for the centripetal pump?
• Which statement correctly describes the construction of mobile refueler tanks?
• How long does the CCFD take to warm up?
• What is the freezepoint of JP-5?
• What is the RPM range listed as 1770 to 1775 rpm in the purifier specifications?
• The spindle assembly is supported by how many sets of ball bearings?
• What is used to insulate the swing amphonel stud that also prevents it from completely grounding out?
• What is the gpm rated capacity of the centrifugal pump?
• The bottom of the wing tank is located at which part of the ship?
• What is the minimum size for a halon fire extinguisher used at the fueling point of a direct refueling system?
• How many intermediate disks are in the 200 gpm purifier?
• To reduce static charges, the fuel must be in contact with the metal walls of the relaxation device for at least how many seconds?
• The service system is typically designed to be isolated into how many quadrants?
• How far does the service tank suction tailpipe extend from the bottom of the tank?
• In the NAVIFLASH system, which component signals the flashpoint?
• Tank filling connections are regulated to introduce fuel into the tanks at a velocity of no more than how many feet per second of product?
• Specific Gravity is defined as which?
• A total of how many sets of ball bearings support the spindle assembly?
• In the purifier assembly, which part holds the wetcake?
• Viscosity is the measure of which property of a liquid?
• Which statement correctly describes the meaning of the acronym CCFD?
• To reduce static electricity prior to entering a fuel tank what component is provided inside a fuel system?
• Tank cleaning maintenance is authorized by which personnel?
• What is the reclamation system used for?
• The CCFD operates on which principle?
• What is the NATO designation for JP-8?
• What unit is used to express the pressure adjustments in cla-val valve settings?
• Mobile refueler tanks are typically made from which combination of materials?
• What is the preferred method of fuel containment used in refueler parking areas?
• What is the description of the automatic Pensky-Martin?
• Which statement correctly describes the Aurora JP-5 service pump?
• What is an aircraft direct refueling system primarily designed for?
• Which purifier has more intermediate disks, the 300 gpm purifier or the 200 gpm purifier?
• A nylon collar acts as a wearing ring for which component?
• What is the working pressure of the positive displacement refuel pump in fueling stations?
• Which statement best describes wearing rings' purpose?
• For a water test with the CCFD, how much fuel is used?
• Microbiological growth in JP-5 is typically described as which of the following?
• How much hose does JP-5 hose reel hold?
• Which tank is normally filled first during a refueling operation?
• Which statement about cla-val valve pressure settings is correct?
• What size mesh are the screens used in strainers for overwing refueling nozzles?
• When should you use an eductor on a direct refueling system?
• What is installed on mobile refuelers to provide a secondary fail-safe system that closes an internal valve when the fuel level is too high?
• Where are the two stationary wearing rings located?
• What is the rated flow and pressure for the Aurora JP-5 service pump?
• Which purifier contains 127 intermediate disks?
• Which statement about the wing tank's location is true?
• What is the effect of surfactants on fuel and water in JP-5?
• Which distance is the correct minimum separation during fueling operations?
• During ashore refueling, tanks are categorized as bulk storage or what?
• During fueling operations, what position should the refueler truck assume?
• Which fuel is associated with the JP-5 hose reel?
• The bowl in the purifier must not exceed how much wetcake?
• Which containment measure is preferred in refueler parking areas?
• What is the suction lift value for the Aurora JP-5 service pump?
• What is the pressure drop limit, in psi, on the service fuel filter?
• How much longer should you cut the continuity wire than the hose itself?
• While inspecting fuel hoses, which indication requires hose replacement?
• Which device is used to quantify solid contaminants in fuel by light transmission through a filter?
• What is the effective range of spring tension that the pressure relief control valves can be adjusted?
• What is the purpose of the fill and transfer system?
• How many intermediate disks are in the 300 gpm purifier?
• The collar is attached by how many ball bearings?
• In the cla-val system, the defuel valve pressure relief control valve will be set how many psi higher than the delivery pressure?
• What is the minimum inside diameter mentioned in the range 200 to 250 millimeters?
• Why are wearing rings used?
• What is the maximum allowable time for product circulation on a returner that is more than half full?
• Coarse sediment is defined as particles of what size?
• Which of the following statements about the three JP-5 pumping systems below decks is true?
• Which gauge type is used to monitor differential pressure across the service filter?
• What is the maximum inside diameter mentioned in the range 200 to 250 millimeters?
• Where are the stationary wearing rings located?
• A control device is built-in on all refueling systems ashore and incorporated on all modern aircraft designs to limit surge pressure to what prescribed pressure?
• Which of the following is NOT one of the three pumping systems in JP-5 below decks?
• Water-in-fuel emulsions appear as what?
• Which of the following is the correct containment approach for refueler parking areas?
• The centrifugal pump impeller is centered and secured in the pump casing by what devices?
• What is the acceptable pressure drop limit, in psi, for the service fuel filter?
• What are the two types of stripping systems in JP-5 below decks?
• How far does the hand-operated stripping tailpipe extend off the ground?
• What is the minimum distance a refueler truck should be positioned from an aircraft during fueling?
• What pore size do the milipore filters used in the CCFD have?
• What tank alarm system is set at 98% and has a mechanically actuated valve to shut off fuel flow?
• Which component on the LIMITORQUE valve operator provides the OPEN and CLOSE position indication lights for the valve?
• Which statement best describes the effect of surfactants on water and fuel in JP-5?
• Why are two milipore filters used in CCFD testing?
• What is the rated pressure for a rotary vane pump for transferring?
• What is the purpose of the CCFD?
• In the cla-val system, which valve provides pressure relief for defuel operations?
• How far does the recirculating line extend off the bottom of the tank?
• Which term describes the mixing of two different fuels?
• Which description best characterizes the NAVIFLASH Method?
• What is the minimum safe distance from an aircraft during refueling?
• Transfer main branch headers connect the transfer main to which component?
• Specific gravity determinations are correlated with a specific temperature of which value?
• The CLA-VAL functions as a pressure-reducing valve to maintain a constant discharge pressure not to exceed what psi?
• Freezing Point is the temperature at which which occurs?
• Which fuel has NATO number F-34?
• What are the two categories of fuel storage tanks used at ashore refueling activities?
• Which two manufacturers are the most common for JP-5 service pumps?
• What are service tanks used for?
• Flashpoint is defined as which statement?
• Microbiological growth in JP-5 is described as which of the following?
• In all direct refueling system pantographs, what type of hose coupling is used?
• The high level alarm tank system is set at what percent of tank capacity?
• In the cla-val system, the fuel valve pressure relief control valve will be set how much higher than the delivery pressure?
• Which of the following is not the preferred containment method in refueler parking areas?
• For overwing refueling nozzle strainers, what mesh size is used in the screens?
• Oil sump capacity is how many quarts?
• Wearing rings are installed between which two components to minimize leakage?
• What is the detection range of the CCFD for solid contamination?
• Which device maintains a constant discharge pressure and prevents overpressure in the fuel distribution line?
• The pressure refueling nozzle used for bottom loading a mobile refueler is designed to receive the product at what minimum gallons per minute?
• Rotating wearing rings are installed on which pump component?
• To be acceptable to aircraft, how should JP-5 look?
• What is the flashpoint of JP-8?
• Who is the last person to sign off a defueling operation in the flight deck or hangar bay?
• Refueling operations are terminated when lighting is observed at what distance from ashore installations?
• What type of tank located between voids is an integral part of the ship's underwater protective system?
• What is the unit of measurement for the working pressure of the refuel pump?
• Which of the following best describes the Aurora JP-5 service pump?
• What is the rated capacity for pre-filters?
• What type of flow meters is installed on truck fill stands?
• Where are the two rotating wearing rings located?
• What is the rated pressure for a rotary vane stripping pump?
• On a return line with more than half its capacity filled with product, how long may circulation continue?
• Which device is used to reduce pressure and maintain a constant discharge pressure in the shore fuel system?
• During preparation for fueling, what distance should be maintained between the refueler and the aircraft?
• How far does the motor-driven extending tailpipe extend off the ground?
• What is the primary use of JP-5 storage tanks?
• What is the freezing point value of JP-8?
• Before fuel can be pumped into any tank in a nest of storage tanks, what condition must be met?
• Sediment in JP-5 most commonly appears as which of the following?
• Volatility describes what concept in fuel properties?
• During hose inspection, which finding requires hose replacement?
• What is the primary device used at shore installations to keep aviation fuels clean and dry?
• What is the name of the gravity fueling nozzle used for auxiliary operations on the flight deck?
• Which percentage reflects the high level alarm set point used in tank operations?
• What is the freezing point (freezepoint) of JP-8?
• Which purifier contains 186 intermediate disks?