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R release the (unwanted) pressure.
R (1) Do the Inspection of the Overpressure Protector 102QM(103QM) (Ref. R AMM TASK 28-12-41-200-001).
R (a) If the overpressure protector 102QM(103QM): R R - and the related items are as specified, no more troubleshooting R work steps are necessary R R - is found to be serviceable but the related items are not as R specified (example, corroded, wire mesh damaged), make them R good before you do the close-up R R - safety disc has operated (is broken or damaged), do Para. 4.A.
R NOTE : The overpressure protector 102QM(103QM) is included as a
____ 
R  Possible Cause in the related TSM procedure (Unwanted Fuel 
R  Transfer (Migration) Between The Outer and Inner Cells of 
R  The Same Wing When The ECAM FUEL System Page ICTV 
R  Indications Show Correct (Ref. TASK 28-15-00-810-815)). 
R  4. Fault Isolation_______________ 
R  A. Procedure 

R NOTE : Read all of the steps in this paragraph before you start work.
____

R The order in which the work steps are done is best decided by the
R maintenance staff together with:
R - other malfunction indications
R - the fuel configuration
R - the aircraft location.
 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : 001-049, 051-099, 101-149, 151-199, ∞∞28-12-00∞∞∞∞∞∞∞∞∞∞Page 216
 201-299, 401-499, Aug 01/05 CES

 

R  (1) If the (frangible) overpressure protector 102QM(103QM) has operated 
R  (is broken), it is important to do all the steps that follow to find 
R  what caused it to break. 
R  NOTE : The reasons why a burst disc can break are as follows:____ 
R 
R  - a defective/unserviceable disk (non standard) 
R  that breaks below the (its) correct operating pressure 
R 
R  - a serviceable disk that operated because the pressure 
R  difference between the center tank and the adjacent left 
R  wing tank was more than the correct safe operating pressure 
R  (Ref. AMM 28-12-00 P.Block 001). 
R  (2) Do a check of the applicable fuel tanker or fuel hydrant hose end 
R  pressure. 
R  (a) If the fuel pressure is more than 50psi (3.45bar): 
R 
R  - change the fuel pressure if possible or 
R 
R  - get another source of fuel supplied at the correct pressure. 
R  NOTE : If the fuel tanker or fuel hydrant hose end pressure is____ 
R  more than the maximum safe pressure it can cause: 
R  - a refuel valve that has been commanded to shut, to stay 
R  open 
R  - a overpressure protector (burst disc) to operate 
R  - damage to the refuel gallery. 
R  (3) Do an Inspection of the Tank Venting System items that follow (Ref. 
R  AMM TASK 28-12-00-200-001): 
R  (a) The VALVE-FLOAT VENT, L WING TK OUTR (15QM) (VALVE-FLOAT VENT, R 
R  WING TK OUTR (18QM)) and replace, if necessary, (Ref. AMM TASK 
R  28-12-43-000-001) and (Ref. AMM TASK 28-12-43-400-001). 
R  (b) The related refuel spill pipe and replace, if necessary, all 
R  unserviceable items (example, damaged or blocked) (Ref. AMM TASK 
R  28-12-46-000-001) and (Ref. AMM TASK 28-12-46-400-001). 
R  (4) Replace the PROTECTOR-OVERPRESSURE, L WING TK (102QM) ( 
R  PROTECTOR-OVERPRESSURE, R WING TK (103QM)) (Ref. AMM TASK 28-12-41-
R  000-002) and (Ref. AMM TASK 28-12-41-400-002). 
R  (5) If, when all the tests and inspections are complete: 
R 
R  - the cause(s) of the operation (broken/damaged) of the overpressure 
R  protector 102QM(103QM) has been found (and all the related 
R  unserviceable LRUs replaced) refuel the aircraft and return it to 
R  service 

R 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : 001-049, 051-099, 101-149, 151-199, ∞∞28-12-00∞∞∞∞∞∞∞∞∞∞Page 217
 201-299, 401-499, Aug 01/05 CESR - no cause for the operation (broken/damaged) of the overpressure R protector 102QM)103QM) can be seen (or found) send AIRBUS a report R of the incident.

 

 「一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一一1 EFF : 001-049, 051-099, 101-149, 151-199, ∞∞28-12-00∞∞∞∞∞∞∞∞∞∞Page 218
　
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