A330-200/300 Fuel System Overview
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A330-200/300 Fuel System Overview

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Questions and Answers

What is the purpose of the collector cell in the trim transfer system?

  • To act as a reservoir for booster pumps (correct)
  • To separate water from the fuel supply
  • To store excess fuel from the engines
  • To allow for manual fuel transfers

    • How is the forward transfer initiated in the trim transfer system if needed?

  • By an override switch located in the cockpit
  • Automatically by the FCMCs
  • Using a remote control system
  • Through pilot's manual activation from the fuel panel (correct)

    • What role does the crossfeed system serve in engine fuel management?

  • It monitors the output pressure of the pumps
  • It isolates a specific tank for fueling
  • It allows any engine to be fueled from any tank (correct)
  • It alternates the main fuel pumps between engines

    • What is the function of the LP valve in the fuel feed system?

    <p>To isolate its related engine from the fuel supply</p> Signup and view all the answers

    Where are vent surge tanks located in relation to the fuel tanks?

    <p>Outboard of each outer tank in the wing and on the trim tank</p> Signup and view all the answers

    What happens if the refuel isolation valve solenoid fails during refueling?

    <p>The valve can be operated by a manual plunger.</p> Signup and view all the answers

    Which component's failure would lead to a crossfeed valve failure in the A330-200/300?

    <p>Refuel isolation valve solenoid failure.</p> Signup and view all the answers

    In the context of fuel line maintenance, what is the primary function of the refuel isolation valve?

    <p>To isolate fuel during refueling.</p> Signup and view all the answers

    What energizes the refuel isolation valve solenoid during the refueling process?

    <p>Fuel pressure from the tanker.</p> Signup and view all the answers

    If both the solenoid and electrical control for the refuel isolation valve fail, which action can be taken?

    <p>Manually operate the valve.</p> Signup and view all the answers

    What is a potential risk of a malfunctioning refuel isolation valve?

    <p>Delayed takeoff due to fueling issues.</p> Signup and view all the answers

    Which operational level is involved with the A330-200/300 fuel system maintenance?

    <p>Level 2 &amp; 3</p> Signup and view all the answers

    What is the primary source of fuel pressure required for the operation of the refuel isolation valve?

    <p>Tanker or pump unit.</p> Signup and view all the answers

    What is an acceptable condition for dispatch with an OUTER tank quantity indication inoperative?

    <p>Low Level sensing system test must be OK.</p> Signup and view all the answers

    Which of the following indicates an operational TRIM tank indication?

    <p>An indication with dashes on the last two digits.</p> Signup and view all the answers

    When is a LOW Level sensing system test NOT required for dispatch?

    <p>When the CENTER tank quantity is operational.</p> Signup and view all the answers

    Which of the following conditions must be met to dispatch with an INNER tank quantity indication inoperative?

    <p>The FUEL used indication must be operational.</p> Signup and view all the answers

    What action is REQUIRED after refueling when an OUTER tank quantity is inoperative?

    <p>Check fuel quantity using the manual MLIs.</p> Signup and view all the answers

    What must be operational to dispatch with a CENTER tank quantity indication inoperative?

    <p>All INNER and OUTER tank fuel quantities.</p> Signup and view all the answers

    Which fuel indication scenario is considered acceptable for dispatch?

    <p>An INNER tank with indication dashes.</p> Signup and view all the answers

    What requirement exists for dispatch when the FUEL used indication is inoperative?

    <p>The indication must be checked against manual MLIs.</p> Signup and view all the answers

    What is the primary function of the overpressure protectors in the trim surge tank?

    <p>To release pressure when it exceeds specified limits</p> Signup and view all the answers

    What happens if fuel enters the trim surge vent tank?

    <p>The check valve allows it to flow back into the trim tank</p> Signup and view all the answers

    Which component is responsible for maintaining the necessary pressure within the center tank?

    <p>Overpressure protectors</p> Signup and view all the answers

    What could potentially trigger the overpressure protectors to break open?

    <p>A blocked airflow into or out of the surge tank</p> Signup and view all the answers

    Where are the NACA intake and flame arrestor positioned in relation to the surge tank?

    <p>They are located in the center tank and at the bottom of the surge tank</p> Signup and view all the answers

    What is the primary purpose of the drain valves in the A330-200/300 fuel system?

    <p>To allow the removal of contaminants from the fuel tanks</p> Signup and view all the answers

    Where are the emergency isolation valves located in the A330-200/300?

    <p>Between the AFT and FWD inner tanks</p> Signup and view all the answers

    During normal operation, the emergency isolation valves are:

    <p>Open to allow fuel flow</p> Signup and view all the answers

    What action must the crew take in response to a fuel leak?

    <p>Close the split valves to isolate the leak</p> Signup and view all the answers

    Which of the following descriptions is NOT accurate regarding the drain valves?

    <p>They prevent fuel overflow during normal operations</p> Signup and view all the answers

    What is the function of the split valves in the fuel system?

    <p>To isolate one tank from another during a leak</p> Signup and view all the answers

    In what situation would crew intervention be necessary regarding the emergency isolation valves?

    <p>In the event of a fuel leak</p> Signup and view all the answers

    What should the crew do to return the emergency isolation valves to normal operation after they have been closed?

    <p>Open them when the tank pressure stabilizes</p> Signup and view all the answers

    What can be done if the refuel isolation valve solenoid fails during the refueling process?

    <p>Use the manual plunger to operate the valve.</p> Signup and view all the answers

    Which component's failure could compromise the operation of the refuel isolation valve during refueling?

    <p>Electrical control system of the solenoid.</p> Signup and view all the answers

    During which maintenance procedure is the refuel isolation valve particularly critical?

    <p>Refueling operations.</p> Signup and view all the answers

    What is the implications of a failed refuel isolation valve during an inflight operation?

    <p>It may lead to an uncontrolled fuel leak.</p> Signup and view all the answers

    What mechanism ensures the functioning of the refuel isolation valve in case of a failure of the solenoid?

    <p>Manual plunger.</p> Signup and view all the answers

    What is the primary role of the solenoid in the refuel isolation valve?

    <p>To open and close the valve based on fuel pressure.</p> Signup and view all the answers

    Which of the following is NOT a potential failure mode for the refuel isolation valve during routine operations?

    <p>Fuel pressure failure.</p> Signup and view all the answers

    In the event of a refuel isolation valve failure, what is typically the main concern for flight safety?

    <p>Possibility of an onboard fire due to fuel leak.</p> Signup and view all the answers

    What method can be used to control the transfer of fuel in the A330-200/300 fuel system?

    <p>Both automatic and manual control</p> Signup and view all the answers

    In the context of fuel maintenance, what is the primary purpose of the drain valves in the A330-200/300 fuel system?

    <p>Allow for the draining of collected moisture</p> Signup and view all the answers

    What is a critical operational aspect to consider when a fuel leak is detected in the A330-200/300?

    <p>Follow specific crew procedures for fuel leakage</p> Signup and view all the answers

    Which statement accurately represents the status of the emergency isolation valves during normal operation?

    <p>They remain open until manually closed</p> Signup and view all the answers

    What could be a consequence of a malfunctioning refuel isolation valve during operational flight?

    <p>Uncontrolled fuel transfer to tanks</p> Signup and view all the answers

    What would indicate that the center tank quantity is inoperative in the A330-200/300?

    <p>A zero reading on the control panel</p> Signup and view all the answers

    Which system component is responsible for regulating pressure within the center tank of the A330-200/300?

    <p>Overpressure protectors</p> Signup and view all the answers

    What must be done if the LOW Level sensing system test is not required before dispatch in certain conditions?

    <p>Document the anomaly and proceed without checks</p> Signup and view all the answers

    What is the role of the fuel isolation valve in the fuel system?

    <p>Controls fuel flow from the forward inner tank to the trim transfer line</p> Signup and view all the answers

    Which function is NOT part of the fuel system's described capabilities?

    <p>Heat energy production</p> Signup and view all the answers

    What initiates the aft APU pump when low pressure is detected?

    <p>Detection of low pressure in the trim transfer line</p> Signup and view all the answers

    What is the primary function of the fuel/air separator in the trim tank fuel transfer line?

    <p>To ensure adequate fuel supply during low pressure conditions</p> Signup and view all the answers

    What happens to the APU LP valve if an APU fire is detected?

    <p>It closes to prevent fuel flow</p> Signup and view all the answers

    How is the main transfer system primarily controlled under normal operations?

    <p>The Fuel Control &amp; Monitoring Computers (FCMCs)</p> Signup and view all the answers

    Which of the following statements about the fuel system storage tanks is correct?

    <p>Each wing has one outer tank and two inner tanks.</p> Signup and view all the answers

    What is one of the capabilities of the jettison option in the fuel system?

    <p>To reduce overall aircraft weight during emergencies</p> Signup and view all the answers

    What is the primary function of the A330-300's fuel transfer system?

    <p>To control the A/C center of gravity through fuel transfers.</p> Signup and view all the answers

    In the A330-300, how many main fuel pumps does each engine use?

    <p>Two main pumps and one stand-by pump.</p> Signup and view all the answers

    What role do vent surge tanks play in the A330-300 fuel system?

    <p>They vent the fuel tanks and collect overflow fuel.</p> Signup and view all the answers

    What initiates a manual forward transfer in the A330-300 fuel system?

    <p>A switch located on the fuel panel.</p> Signup and view all the answers

    Which tanks are used to correct fuel imbalance between engines?

    <p>Crossfeed tanks.</p> Signup and view all the answers

    What is the purpose of the dedicated jet pump in the fuel system?

    <p>To fill the booster pump collector cells.</p> Signup and view all the answers

    What type of fuel feed system is utilized for the APU in the A330-300?

    <p>An independent fuel feed from the LH inner tank collector cell.</p> Signup and view all the answers

    How many tanks are included in the A330-300 fuel storage configuration?

    <p>Five including the trim tank.</p> Signup and view all the answers

    What is transmitted to the ECAM FUEL page from the Fuel Control and Monitoring Computers (FCMCs)?

    <p>Fuel quantity, level, and temperature data</p> Signup and view all the answers

    Which component is responsible for monitoring fuel quantity and levels in the A330-200/300?

    <p>Fuel Control and Monitoring Computers (FCMCs)</p> Signup and view all the answers

    What does the Fuel Quantity Indicating (FQI) system measure?

    <p>Fuel levels and quantities in the tanks</p> Signup and view all the answers

    What kind of data does the FQI system send to the Fuel Control and Monitoring Computers (FCMCs)?

    <p>Fuel quantity and tank level sensing data</p> Signup and view all the answers

    What additional information is monitored alongside fuel quantity in the A330-200/300 fuel system?

    <p>Fuel tank temperature</p> Signup and view all the answers

    Which part of the A330-200/300 fuel system indicates a malfunction in the fuel indicating systems?

    <p>ECAM FUEL page</p> Signup and view all the answers

    When was the last revision for the A330-200/300 Technical Training Manual noted in the content?

    <p>01.06.2019</p> Signup and view all the answers

    What is the purpose of the referring to 'venting' in the context of the A330-200/300 fuel system?

    <p>To manage air pressure within fuel tanks</p> Signup and view all the answers

    Study Notes

    A330-200/300 Fuel System

    • Drain Valves: Located at low points in each fuel tank to drain water.
    • Emergency Isolation Valves: Installed between the aft and forward inner tanks. They are normally open, but the crew can close them to isolate a fuel leak.
    • Refuel Isolation Valve: This valve is energized during refueling, allowing fuel to flow from the tanker. If the solenoid fails, the valve can be operated manually.
    • Fuel Quantity Indications: A failure in the refuel isolation valve can result in an inoperative fuel quantity indication.
    • Fuel Quantity Indication Inop Conditions:
      • Outer Tank Inop: Check quantity with manual MLIs, ensure FUEL used indication and adjacent INNER tank quantity are operational, verify low level sensing system test.
      • Inner Tank Inop: Check quantity with manual MLIs, ensure FUEL used indication is operational, confirm left and right INTERTANK valves are closed, verify low level sensing system test.
      • Center Tank Inop: Check quantity with manual MLIs, ensure FUEL used indication is operational, confirm all INNER and OUTER tank fuel quantities are operational.

    Fuel System Design

    • Trim Transfer System: Controls the aircraft's center of gravity through forward and aft transfers. Controlled automatically by FCMCs, but a manual forward transfer can be initiated in case of failure.
    • Collector Cell: A closed area within each inner tank section that serves as a reservoir for booster pumps.
    • Jet Pump: Dedicated pump used to fill the collector cell of the main booster pumps.
    • Vent Surge Tanks: Located outboard of each outer tank and on the RH side of the trim tank. They vent the fuel tanks and collect fuel split from them.
    • Center Tank and Trim Surge Tank Overpressure Protectors: Prevent excessive pressure in the tanks by releasing pressure into the inner tank.
    • NACA Intake, Flame Arrestor, and Overpressure Protectors: Installed in the center tank and bottom of the surge tank to ensure pressure limits are not exceeded.
    • Check Valve: Installed in the RH rib 18, allowing fuel from the trim surge vent tank to flow back into the trim tank.

    Fuel Feed System

    • Independent Fuel Feed System: Each engine has its own system with two main pumps and one standby pump.
    • Low Pressure (LP) Valve: Isolates each engine from the fuel supply.
    • Crossfeed System: Enables any engine to draw fuel from any tank. Used for fuel imbalance correction and gravity feeding.

    A330-200 Fuel System Overview

    • Six fuel tanks are used: two outer tanks and two inner tanks (divided into forward and aft sections) per wing, and a center tank.
    • The fuel system includes six major functions:
      • Storage
      • Venting and scavenging
      • Engine feed
      • APU feed
      • Main and trim transfers
      • Refuel/defuel
    • Dedicated jet pumps fill the collector cell of the main booster pumps.
    • Vent surge tanks are located outboard of each outer tank in the wing and on the right side of the trim tank.

    Fuel Transfer Systems

    • Main Transfer System:
      • Controls fuel flow from the center tank and outer tanks to the two inner tanks for engine feeding.
      • Automatically controlled by the Fuel Control & Monitoring Computers (FCMCs), but can be manually controlled.
    • Trim Transfer System:
      • Controls the aircraft center of gravity by forward and aft transfers.
      • Automatically controlled by the FCMCs, but a manual forward transfer can be initiated from the fuel panel in case of failure.

    APU Fuel Supply

    • The APU is supplied fuel from the LH inner tank collector cell through the trim transfer line using the forward APU pump.
    • The aft APU pump starts if low pressure is detected in the trim transfer line.
    • The APU fuel isolation valve closes if an APU fire is detected.

    Fuel Line Maintenance

    • Refuel Isolation Valve Failure:
      • The refuel isolation valve solenoid is energized during refueling to open the valve via fuel pressure from the tanker/pump unit.
      • If the solenoid or its electrical control fails, manual operation is possible.
    • Crossfeed Valve Failure (MEL/Deactivation):
      • The crossfeed system enables any engine to be fed from any tank for fuel imbalance correction or gravity feeding.
      • It is used to maintain a balanced fuel distribution between tanks and for gravity feeding the engines.

    Fuel Tank Venting

    • Wing and center tanks vent fuel through vent surge tanks.
    • The trim tank has a separate vent surge tank.

    Fuel Tank Indicating Systems

    • Fuel quantity indicating (FQI), tank level sensing, and temperature measurement systems are used.
    • Data from the FQIs, tank level sensors, and temperature sensors is transmitted to the Fuel Control & Monitoring Computers (FCMCs).
    • FCMCs display the data on the ECAM FUEL page and the refuel/defuel control panel.

    Additional Notes

    • Each tank has one or more water drain valves.
    • Each engine has two main pumps and one stand-by pump.
    • The stand-by pump activates as a backup if a main pump has a low output pressure.
    • An LP valve isolates each engine from the fuel supply.

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    Related Documents

    A330-200/300 Fuel System Training Manual PDF

    Description

    Test your knowledge on the A330-200/300 fuel system, including operational components like drain valves, isolation valves, and fuel quantity indications. Understand how to handle inoperative conditions and ensure safety during refueling. This quiz is essential for those in aviation maintenance and safety.

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