AN AIRBUS A319 ACFT MEL SPECIAL PROCEDURE TO RE-ACTIVATE THE #1 ENG HP VALVE WAS NOT ACCOMPLISHED WHEN MEL ITEM CLEARED. ACFT RELEASED FOR SVC.

Narrative

THIS ACFT WAS AT THE HANGAR AND THERE WAS A MAJOR PUSH TO GET THE ACFT TO THE GATE. THE SUPVR EVEN HAD ANOTHER CREW TAKE THE ACFT TO THE GATE BEFORE THE LOG WAS DONE; SO THERE WAS DEFINITELY PRESSURE TO GET THE PAPERWORK DONE. AS A RESULT OF THE PRESSURE; THE MECH FAILED TO CHK TO SEE ABOUT REACTIVATING THE VALVE AND MAINT CTL DIDN'T REMIND HIM OF IT WHEN HE CALLED IN TO CLR THE MEL. WHILE ACCOMPLISHING SEVERAL DIFFERENT TASKS; WE INADVERTENTLY MISSED THE REQUIRED SPECIAL PROCS OF AN MEL. BASICALLY HE CLRED AN MEL ON THE #1 HP VALVE; BUT FAILED TO REACTIVATE THE VALVE. FOR SOME REASON; IT CHKED FINE IN ZZZ BUT AT ENG START IN ZZZ2; THE CREW GOT AN ECAM NOTICE 'AIR ENG 1 HP VALVE FAULT.' ZZZ2 FOUND THE VALVE STILL LOCKED CLOSED. THEY REACTIVATED THE VALVE; OPS CHKED OK; AIRPLANE DEPARTED WITH NO PROB. THE MECH BECAME AWARE OF THE PROB WHEN HE CAME TO WORK THE NEXT NIGHT BY HIS SUPVR; WHO WANTED A STATEMENT. HP VALVE WAS REACTIVATED AND ACFT RETURNED TO SVC. TAKE TIME OUT TO THINK MY ACTIONS; DESPITE THE RUSH FOR ACFT ON TIME DEP.