Field services – Gas Turbine
Combustion Inspection
During the combustion inspection, a remote visual inspection is performed to determine the condition of the internal components. Based on the findings, the removal, inspection, and replacement of pipes and atomization and purge air systems, cooling and sealing systems, fuel injection nozzles, combustion chamber covers, flame tubes, and combustor baskets is carried out, if required. This practice varies depending on the gas turbine technology and the quality of the fuel used. It is performed at intervals of between 8,500 and 12,500 HH.
Hot Gas Passage Inspection
In this phase, the combustion section components are usually replaced: combustion baskets, injectors, transition pieces, and turbine section components such as blades and nozzles, in order to restore the turbine to working order for another operating cycle. This practice varies depending on the efficiency of the combustion inspections carried out, the quality of the fuel used, and its execution interval is performed at 24,000 HH.
Major Maintenance
This type of maintenance is carried out once 48,000 operating hours have been completed. During this phase, static and dynamic components are inspected, and critical components (at the static and turbocharger rotor levels) are replaced.
It also includes hot gas inspection and disassembly of the unit. Inspection and repair of the intake air filter and duct, diffuser and exhaust expansion joints, IGV combustion components, compressor and turbine blades, intake chamber and exhaust plenum, inspection of load couplings and fuel valve are also performed.
Maintenance of auxiliary equipment and control system:
- Supply of parts.
- Component repair.
- Maintenance of auxiliary equipment.
