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Inspection and Maintenance — GEK 107048
3. Unbolt flame detector flange and remove from combustion casings and secondary fuel nozzles.
Operation 5 — How to Remove the Primary Gas Fuel Lines.
See Figure CI-D.4.
1. Identify, tag, and nondestructively matchmark each piping pigtail with the combustion chamber
number before removing.
2. Disconnect flanges at the cover.
3. Disconnect flanges at gas manifold, and remove piping pigtails.
4. Clean all flange faces and cover all pipe openings. Clean all nuts, bolts and discard old gaskets.
Bag bolts, nuts and identify for reassembly.
Operation 6 and 7 — How to Remove the Transfer Fuel Gas and Secondary Fuel Gas Lines
1. Following the procedure in Operation 5, remove and store these lines.
Operation 8 — How to Remove the False Start Drain Tubing.
See Figure CI-D.7.
1. Identify and tag each false start drain tube from chambers 3, 4, 5, 6 and 7.
2. Disconnect the tubing from the combustion outer casing and the false start drain manifold pipe.
See Fig. CI-D.7.
3. Cap the open ends of the tubing and the open ends on the false start drain manifold.
Stop Collar
Figure CI-D.6. Swagelok Fitting With Stop Collar.
Combustion Inspection — Disassembly Procedures
CI-D-7
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