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Combustion Inspection — Inspection Procedures
Inspect
Inner Crossfire Tubes
1. Burn through; missing metal
2. Distortion
3. Cracks
4. Flange wear
5. Tube wear
Crossfire Tube Spring Retainers
1. Wear
2. Evidence of distortion
c. Aft frame internal corner cracks.
d. Aft frame external corner cracks.
e. Forward brackets for weld cracks right and left sides.
f. Transition piece body for cracks.
2. Use the transition piece inspection criteria Table CI-4 to completely inspect the transition pieces
after fluorescent penetrant test.
3. Record findings on Inspection Form PGS/GT-FF-6407.
4. Repair welding procedures.
CI-I-18
Table CI-3
Inspection Limits, Crossfire Tubes and Retainers
CAUTION
The inspection criteria in this Table CI-3 applies to
General Electric Company supplied crossfire tubes and
retainers only.
Maximum Acceptable
Limits
None
None
None
0.14 inch minimum thickness
0.11 inch minimum thickness
20% of original material
None
Inspection and Maintenance — GEK 107048
Disposition (For Parts
Beyond Max. Limits)
Replace
Replace
Replace
Replace
Replace
Replace
Replace
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