TG412 - Steam Turbine Repairs

2 days - 1.3 Continuing Education Units Awarded

This two-day course takes the basics covered in TG251, TG301, and TG316 and provides in depth "Hands-On" turbine component repair training.  If you are a hands-on person this is an excellent opportunity to gain from the hands-on experience.  Hands-on activities is sure to generate questions you may not have considered before, it is sure to generate appreciation for those who commonly perform these repair activities.  This course is only scheduled at our new Education/Lab facility in Bradenton, FL due to extensive uses of steam turbine components for practical exercises.

This course has been designed for steam turbine generator foremen, supervisors, engineers, and all other plant personnel who are involved in turbine repair decisions and have not had the opportunity to have been involved in or have actually performed repairs. A thorough understanding of turbine fundamentals and inspections is a prerequisite for this course. This basic knowledge may be obtained by "On-Job" experience or by completion of a turbine overhaul/inspection course.

Topical Outline includes: Diaphragm Area Checks, Diaphragm Drop Checks, Diaphragm Repairs, Steam Path Audit, Bucket/Blade Repair, Shell/Casing Repair, Bearing Repairs, Valve Component Repairs, and Packing/Seal/Fitting Repairs.

OBJECTIVES
Upon successful completion of this course the participant should be able to:

1. Describe the tasks involved in and the duration of diaphragm area checks.
2. Describe the tasks involved in and the duration of diaphragm drop checks.
3. Describe the tasks involved in and the duration of minor and major diaphragm repairs.
4. Describe the tasks involved in and the duration of steam path audits.
5. Describe the tasks involved in and the duration of bucket/blade repairs.
6. Describe the tasks involved in and the duration of bearing repairs.
7. Describe the tasks involved in and the duration of valve repairs.
8. Describe the tasks involved in and the duration of packing fitting and repairs.

COURSE OUTLINE

1. Introduction
   1. Lab Orientation/Safety
2. Diaphragm Area Checks
   1. Taking Data
   2. Calculating Areas
   3. Evaluating Data
   4. Corrections
3. Diaphragm Drop Checks
   1. Taking Data
   2. Evaluating Data
   3. Other Techniques
4. Diaphragm Repairs
   1. Inspections
   2. Evaluations
      1. Minor
      2. Major
   3. Repairs
      1. Inco 182/82
      2. 410 Stainless
5. Steam Path Audits
   1. Operating Data
   2. Defect Effecting Performance
   3. Taking Data
      1. Seal Leakage
      2. Other Leakage
      3. Erosion
      4. Surface Finish
      5. Deposits
      6. Mechanical Damage
   4. Economic Evaluation
6. Bucket/Blade Repair
   1. Cover/Shroud Band Removal
   2. Tenon Recontour
   3. Tenon Peening
   4. Cover/ Shroud Band Fitting
   5. Cover/Shroud Band Foxhole
   6. Tenon Welding
   7. Bucket Weld Repairs
   8. Erosion Shielding Replacement
   9. Tie Wire Repair
7. Casing/Shell Repairs
   1. Defects
   2. Evaluations
   3. Repairs
8. Bearing Repairs
   1. Defects
   2. Evaluation
   3. Repairs
9. Valve Component Repairs
   1. Casings
   2. Stems
   3. Disks
   4. Seats
10. Packing/Seal Fitting/Repair
    1. Casing/Diaphragm Bore Distortion
    2. Offset Seals
    3. Long Neck Seals
11. Course Conclusion