Please can any one tell me at how many running hours we should perform the maintenance on Steam turbine (minor overhaul and major overhaul). which kind of inspection.

Example on Gas turbine, we perform 12000 running hours combustion inspection, 24000 running hours Hot parts inspection, 48000 major overhaul.

I cannot find for steam turbine.
Thanks a lot.

 

Traditionally, it's been the standard to do it about every 5 years. These means pulling the cover, going through everything, inspecting and repairing as needed.

Some utilities are extended that to 6, 8, 10+ but have very extensive monitoring and quality control. There is lots of information available about this in trade publications.

http://www.maintenanceworld.com/Articles/BeebeR/jqme3.pdf

 

Thanks a lot for your information