Steam Turbine Overhaule scope of work:
- Steam Turbine Simple Overhaule (SI):
- Checking Bearing condition.
- Checking Bearing Clearance
- Check the shaft alignment
- Checking Valve HP turbine Governing movement. Governor oil pressure
- Check the condition of the blade last LP Turbines.
- Checking Steam Strainer
- Calibration Turbine protection tools and measuring instruments.
- Steam Turbine Mean Overhaule (ME):
- That Simple Inspection scope of work plus with the work include:
- Opening turbine casing upper
- Check the condition of the whole turbine blades.
- Check the clearance between the rotor and stator
- Checking the sealing system.
- Steam Turbine Major Overhaule (SE)
- That Scope ME jobs plus work include:
- Turbine Rotor Lift and clean the crust of dirt / rust.
- Remove the fixed blade diaphragm and cleaning it. Stator and rotor cleaning. If removing difficult, cleaning dirt stator and rotor can be done by sand blasting.
- Checking the rotor and stator defective parts and make repairs if necessary or replace the damaged part.
- Replace Bearing clearance when it was over
- Replace all equipment removed, and record clearance.