Combustion Inspection Elimination Kit
kian Turbo Tec a high-tech process to eliminate the requirement for combustion inspection outages. Gas turbines can then be operated up to, and inspected at, 24Khrs for hot gas path and 48Khrs for major inspection intervals, thereby reducing gas turbine downtime and increasing availability.
Stress, wear and creep growth are very common problems with the following consequences:
- Thermal stresses leading to cracking of critical components
- Excessive wear due to vibration caused by the combustion dynamics
- Creep growth in areas such as the transition piece picture frames, which leads to distortion and incorrect power distribution in the critical gas path.
By the application of thermal barrier coatings, local “hot spotting” of the parent materials is reduced, as is the thermal stress, thus preventing cracking of critical components. By applying hard-face coatings and wear resistant materials, and by reducing clearances, wear due to vibration is minimized.
Nimonic material, which has better creep resistant characteristics in the area of the picture frame, is now used extensively – in fact complete transition pieces can be supplied in Nimonic material.