In re BOAC's post concerning the AVHerald remark re, "fuel line rupture", the following may be of some interest.
Report:
Air Transat A330 fuel exhaustion
I posted this previously in the thread and I'll post it once more in case some haven't had a chance to read it yet.
Report:
Air Canada A333 fuel leak at the engine
From the TSB report:
"Rolls-Royce indicates that pressure in the LP fuel line increases from 100 pounds per square inch (psi) at idle to approximately 190 psi at take-off power while the fuel flow rate increases from 685 kg per hour to 9000 kg per hour. Data from the FDR indicate that a fuel discrepancy began when engine power was increased for take-off. At take-off power, the fuel loss was calculated to be approximately 10 000 kg per hour, yet the engine continued to operate normally."
Whether the Avianca A332 leak would have stopped the engine is debatable. The "contrail" left by the fuel in the AC case looks to be about the same as the Avianca one and in both cases the engine kept running normally.