Turbine Overhauling
Step wise step Procedure and Important clearance Maintain as per check list.
Step-1 :- To be check Bearing Clearance
A.) Oil Clearance B.) Oil Gland Clearance C.) Interference.
Step-2:- To be Check Alignment
Step-3:- To be Check Run Out (Turbine coupling run out and Generator Coupling run out)
Step-4:- To be Check Air Gap (Exciter Air Gap and Generator Air Gap)
Step-5:- To be Check Emergency Governor trip level clearance
Step-6:- To be check centering reading
Step-7:- To be check steam gland clearance
Step-8:- To be check floats
Step-9:- To be check turbine Pressure stage diaphragm gland clearnce
Step-10:- To be check flow passage clearance (steam Path Audit)
Step-11:- To be check safety Device and speed sensors
Step-12:- To be check Safety Device and Sensors (Axial displacement , differential expansion)
Step-13:- To be check safety device and Vibration sensors (Turbine & Generator Front and rear Brg Vibrations)
Step-14:- To be check Single Row Curtis Stage.
