reaction turbine overhaul - part two

Let's start with the glands overhaul.
The overhaul scope was not so large.
- cleaning by blasting,
- NDT examination,
- dowel pins and screws exchange,
- seal strips exchange,
- machining,

This turbine includes 3 glands. Two of them as a external ones and one as an internal one beetwen HP and IP turbine's part.
After blasting our NDT inspectors found no important defects, means no removing and welding works before next steps.
Prior to new pins machining, the pinholes were reamed to get right geometry of the holes, than turner got diameters included proper clearance - I do not remember, but for sure not more than 0.10 mm.
To remove and put new seal strips was the most labour-consuming task. We used vertical lathe to remove old strips and correct the shape/geometry the grooves but anyway it required to be very carefull. Certainly, producing new gland, especially by CNC machines is easier and faster.
Very important thing is worth mentioning - gland setting on the lathe. This activity is one of the most important steps during any machining of used turbine parts. All of them, because of high tempeature, and steam preassure have some deformation even if they were round with accuracy of 0.01 mm as new ones.
Very often detail setting on lathe,boring machine or miller takes hours particullary if they are large but machining itself can last minutes - it is feature of turbine repair...