Frame 7B Combustion Inspection
PSG mobilized a Technical Field Advisor, Foreman, Turbine Mechanics, and Tooling to a Utility site in the southern U.S. to perform a combustion inspection ‘’CI’’ on a GE MS-7000B combustion turbine.
The job consisted of removing and replacing all combustion parts and associated consumables. The fuel nozzles, combustion liners and transition pieces were removed and replaced with OEM refurbished components.
The bullhorns, combustion chambers, crossfire tubes, retainer clips and lid covers were returned to service with no replacement necessary. Transition piece hardware was replaced with new parts and the crossfire tubes and retainer clips were returned to service with minor wear being noted. All associated flange gaskets were replaced with new OEM consumable parts in all 10 combustion cans as a preventive maintenance practice. New flange bolting hardware was also installed as a preventive maintenance practice.
The combustion wrapper was removed to better access the transition pieces and have a better visual inspection of the 1st stage nozzle, all wrapper case bolting was replaced with new upgraded components.
The inlet was visually inspected and found to be in overall good visual condition.
A visual inspection of the exhaust plenum showed the assembly to be in overall good visual condition with minor wear noted.
The end result was another successful combustion inspection on a Frame 7B combustion turbine, and most importantly, a satisfied customer.
