CT518 – (Siemens V84.2) Combustion Turbine Generator Maintenance

CT518 – (Siemens V84.2) Combustion Turbine Generator Maintenance

4.5 days - 32 PDH Credits Awarded



This 4.5 day course was developed to improve the effectiveness of maintenance activities associated with Siemens V84.2 combustion turbine-generators.  First we need to learn to properly identify all the major components and systems.  An overview of the identification of this equipment is offered in advance of the more detailed lectures to follow.   Next, we need to learn to better plan and implement gas turbine maintenance outages.  Planning, safety, procedures and considerations regarding replace/reuse/repair decision-making are very important topics covered.  We examine the most common causes of gas path damage and the impact upon efficiency, reliability and availability.  Related topics include clearance data taking, NDE, bearing inspections, and alignment issues.  Combustion turbine operation is discussed from the perspective of auxiliary systems and how operating factors may impact maintenance intervals.  Combustion, hot gas path and major inspections are discussed.  The generator is included as well.  Specific discussions include the identification of the major generator components, disassembly, and inspection. A topical outline includes: Review of CT Fundamentals; V84.2 Construction and Operating Principles; Auxiliary Systems: Maintenance Preparation and Planning; Combustion Section Inspection; Turbine Inspection; Major Inspection[ Generator Components, Disassembly, & Inspection; and Alignment. This course has been specifically designed for plant personnel who are involved in safely and the maintaining of these Siemens V84.2 combustion turbine-generators.


Upon successful completion of this course the participant should be able to:
  1. Describe the major components and systems associated with Siemens V84.2 combustion turbines.
  2. List gas turbine operational and safety issues that typically cause the scheduling of a maintenance outage.
  3. Describe differences between a hot gas path inspection, turbine inspection, and major inspection.
  4. List the considerations that must be included when developing an outage plan or schedule.
  5. Describe the major considerations when making a replace/reuse/repair decision.
  6. Describe the procedures necessary for the safe and effective disassembly and reassembly of combustion turbine components.
  7. Describe the disassembly and reassembly of the major fuel valves.
  8. List the most common causes of gas path damage and their possible affects upon future operation.
  9. Describe most common causes gas path defects and their impact upon turbine efficiency and reliability.
  10. Describe the type and purpose of clearance and alignment measurements commonly taken during the disassembly and reassembly of a combustion turbine unit.
  11. Describe the measuring instruments used to determine combustion turbine component clearances.
  12. List and describe the various non-destructive examinations performed during disassembly of the combustion turbine.
  13. Describe the common procedures for cleaning and inspecting combustion turbine components.
  14. Describe the criteria used to evaluate combustion turbine component defects.
  15. Describe the common repair methods for repair of combustion turbine components.
  16. Describe the common types and operation of journal and thrust bearings.
  17. Describe the common causes of bearing damage.
  18. Describe the measurements required to determine oil clearances.
  19. Describe common bearing inspection and repair procedures.
  20. Describe the considerations to be taken into account when evaluating alignment of combustion turbine components.
  21. Describe the methods used to properly align combustion turbine generator components.

Course Dates / Location / Fee

See www.TurbineGeneratorTraining.com for detail on the course dates / locations / and registration fees. HPC’s 3-4-2 policy applies:  Sign up 3 for the same course/date and pay for only 2! HPC Technical Services reserves the right to cancel any course/seminar within 10-working days of the scheduled date.  Fees are 100% refunded or credited to another Seminar (clients' choice) if HPC should cancel any Seminar.  HPC is not responsible for non-refundable airline tickets or other travel expenses under any circumstance.

Frequently Asked Questions

  • Will HPC Technical Services bring this course to our location for our personnel only? Will HPC Technical Services customize the presentation at our site to suit our particular needs?  YES, call or email Stephen Parker, Stephen@TurbineGeneratorTraining.com for a price quotation.
  • Is HPC Technical Services' textbook available for purchase as a reference document? This text is not yet available for purchase.
  • What is the cost for HPC Technical Service to deliver this course at our location? Well, of course that can vary, but generally speaking, if you're planning on having 6+ attend, when considering your T&L, it may be to your advantage to perform the course at your plant (office).  You gain from the customization and price.
  • Can HPC Technical Services provide "Technical Assistance" in outage planning, implementation or troubleshooting? Yes we can.  Call or contact Stephen Parker, Stephen@TurbineGeneratorTraining.com for our rate sheets and any further information required.

Course Outline

  1. Combustion Turbine Fundamental Review
  2. Siemens V84.2 Combustion Turbine Construction
    1. Turbine Function
    2. Component Description
  3. Turbine Auxiliary Systems
    1. Lube Oil System
    2. Hydraulic Supply
    3. Cooling and Sealing Air System
    4. Fuel Gas System
    5. Fuel Oil System
    6. Fuel Forwarding System
    7. Atomizing Air System
    8. Starting System
    9. Protection System
  4. Maintenance Preparation & Planning
    1. Periodic Inspections
    2. Running Inspections
    3. Combustion Section Inspection
    4. Turbine Inspection
    5. Major Inspection
    6. Documentation
    7. Scheduling
  5. Combustion Section Inspection
    1. Accessibility
    2. Parts Identification
    3. Ignition and Flame Detection
    4. Combustion Components
    5. Borescope Inspection
    6. Reassembly
  6. Turbine Inspection
    1. Accessibility
    2. Turbine Shell Disassembly
    3. Nozzle Disassembly
    4. Inspection
    5. Reassembly
  7. Major Inspection
    1. Accessibility
    2. Disassembly
    3. Bearings
    4. Rotor
    5. Compressor Stator
    6. Reassembly
  8. Generator
    1. Component Description
    2. Disassembly
    3. Inspection
  9. Alignment
    1. Readings
    2. Procedure

Combine Turbine Certification

Those who attend this course are automatically qualified to take HPC Technical Services' Certification Examination.  This examination is offered at no additional expense to the participant.  An 80% passing grade is required.  The examination length will not exceed 2-hours.  Those who complete this examination will receive a revised "certificate of completion" that recognizes this accomplishment along with two-copies of a "To Whom It May Concern" letter that states their accomplishment.  (Two copies are provided, one for the participants' employer and one for the participants' personal file.)  Consult HPC's website, www.TurbineGeneratorTraining.com, for detail on HPC gas turbine certification program.

What you will receive

  1. 1 copy of HPC Technical Services' textbook, (Siemens V84.2) Combustion Turbine Operations & Maintenance.
  2. A Certificate of Completion with 31 PDH.