vST531 – Combined Cycle Steam Turbine Maintenance

vST531 – Combined Cycle Steam Turbine Maintenance

5 days (4-hours sessions) - 20 PDH Credits Awarded


No future dates scheduled


Planning, scheduling, and implementing a steam turbine outage can be one of the most demanding tasks you perform.  Especially, when problems are found that were not anticipated (and there are always these kinds of problems).  In the class we will learn to better plan the work (from a technical perspective).  Once the work is planned, as we know, the next task is to work the plan.  Here is where the surprises can occur.  Some components will not disassemble according to procedure – what are your options?  Some components do not meet OEM specifications – what are your options?  Some components don’t go back together according to procedure – again, what are your options?  These options usually involve repair / replace / reuse decision making.  Effective decision making is a function of your knowledge of the importance of this component, your understanding of recommended tolerances, your understanding of how different options can impact the schedule and/or cost of this outage.  Complicating this issue is a strong need to make outages shorter in length, AND longer in frequencies between outage.  It’s simple:  You need to do more with less time and money available.  This course is intended to help you (or your staff) make better steam turbine maintenance decisions.

Over the past couple years the most commonly received comment for our traditional steam turbine maintenance training was, "I wish I had taken this course 10-years ago."  Well, we’re planning on the same comments for the VILT (virtual instructor led training) sessions.  The phrase high-quality applies to ‘content’ and the ‘presentation’ skills.  We see the following advantages in the delivery of our virtual instructor led training session:

  • Greater schedule flexibility since we don’t have to deal with travel schedules.
  • Lesser cost as there is the travel & living expenses is now zero.
  • Lesser time consumption as travel time to / from the site or classroom is eliminated.
  • Maintain the same level of content (sometimes even improve that content) by greater attention given to the need for a quality presentation.
  • Improved even more easy to read text content.

All of the above advantages along with HPC’s history of providing knowledgeable / equipment experienced instructors


Upon completion of the course the participants should be able to:

  1. List steam turbine operational and safety issues that typically cause the scheduling of a maintenance outage.
  2. List the considerations that are typically included as part of an outage plan or schedule.
  3. Describe the major considerations when making a replace/reuse/repair decision.
  4. Describe the procedures necessary for the safe and effective disassembly and reassembly of steam turbine components.
  5. List the five (5) most common causes of steam path damage and their possible affects upon future operation.
  6. Describe three (3) common causes steam path defects and their impact upon turbine efficiency and reliability.
  7. List the most common causes of steam path damage, their impact upon steam turbine efficiency and reliability as well as their possible effects upon future operation..
  8. List and describe the various non-destructive examinations performed during disassembly of the steam turbine.
  9. List and describe the common procedures for cleaning and inspecting steam turbine components.
  10. Describe the criteria used to evaluate steam turbine defects.
  11. List and briefly describe the common repair methods for repair of steam turbine components.
  12. List and briefly describe the common causes of bearing damage.
  13. Describe the measurements required to determine oil clearances.
  14. List and briefly describe common bearing inspection and repair procedures.
  15. Describe the disassembly and inspection techniques associated with a combined set of steam valves.
  16. Describe the considerations to be taken into account when evaluating alignment of steam turbine components.
  17. Describe the methods and type of calculations used to properly align steam turbine components.

Course Synopsis


1 hour – Introduction

1 hour – Planning, Scheduling & Decision Making

2 hour – Turbine Shells, Casings & Rotors: Disassembly & Reassembly


2 hours - Turbine Shells, Casings & Rotors:  Inspection and Component Repair

2 hours – Journal & Thrust Bearings: Disassembly/reassembly procedures, inspection, and typical types of distress as well as causes.


1 hours – Couplings: Disassembly/reassembly procedures, inspection techniques, and typical types of distress as well as causes.

3 hours – Steam Valve Maintenance


4 hours - Alignment: How to calculate and make moves for stationary equipment such as diaphragms and inner shells. How to take coupling rim/face readings, how to calculate moves to correct for coupling misalignment, and how to calculate and make moves to bearings to accomplish alignment objectives.


3 hours - Job Wrap-Up:  Learn what kind of data should be recorded following the outage, and what checks to make as we prepare to return the equipment to service.

1 hour – Course Conclusion 

Course dates / fee

This course is scheduled to be delivered in five one-half days.  See www.TurbineGeneratorTraining.com for latest information on the course

dates.  Please note that, due to time restrictions, we will be assuming the attendee has fundamental knowledge of steam turbine construction (see our vST201).

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.

Frequently asked questions

  • Will HPC Technical Services bring this course to our location (or provide a VILT) for our personnel only? YES, call or email Stephen Parker, Stephen@TurbineGeneratorTraining.com for a price quotation.
  • Will HPC Technical Services customize the presentation to suit our particular needs?
  • Can HPC Technical Services provide "Technical Assistance" in the planning and implementation of our outages? Yes we can.  Call or contact Stephen Parker, Stephen@TurbineGeneratorTraining.com for our rate sheets and any further information required.

What you will receive

  1. 1 copy of HPC Technical Services' full COLOR textbook, Combined Cycle Steam Turbine Maintenance, as written by Harold Parker, with significant technical support by Ray Militello, Robert Doughty, Doug Lemmo, Bill Newbury and John Mitchell. The textbook will be sent to the registered personnel approximately 2-weeks prior to course date.  Recognize that registration needs to be more than 2-weeks prior to scheduled course date to ensure the text will arrive prior to course date.
  2. A "Certificate of Completion" with 17.5 PDH.