Patent ID: 6553769
Filing Date: 2003-04-29
Classification: F23R

Abstract:
A method for concentrically installing a pilot fuel assembly in a combustor casing, said method comprising the steps of:providing first and second flat surfaces on said combustor casing, said first and second surfaces being perpendicular to one another; providing third and fourth flat surfaces on said pilot fuel assembly, said third and fourth surfaces being perpendicular to one another; inserting said pilot fuel assembly into an opening in said combustor casing; moving said pilot fuel assembly as far as it will go in a first direction substantially parallel to said first surface; taking a first measurement of the distance between said second and fourth surfaces; moving said pilot fuel assembly as far as it will go in a second direction, opposite to said first direction; taking a second measurement of the distance between said second and fourth surfaces; and locating said pilot fuel assembly at a position where the distance between said second and fourth surfaces is equal to the average of said first and second measurements.