TG403 – Turbine Generator Balancing Workshop

TG403 – Turbine Generator Balancing Workshop

3 days - 21 PDH Credits Awarded



This class is intended to improve the participants' ability to direct a mechanical balance program on steam turbine-generator equipment. (Gas turbines and hydro turbines are discussed as participants require). It is the intent that, upon completion of this course, the participant will be able to conduct a routine balance program on most two/bearing per span turbines.   In addition, participants will learn to evaluate vibration symptoms as they impact turbine generator operations.  This course is scheduled once per year at our facilities in Bradenton FL to support a degree of hands-on activities. A topical outline is listed here for your reference:  Vibration Theory, Use of Vibration Measuring Equipment, Recording Data, Performing a One-Shot Calculation, Performing Measured Effect Analysis, Installing Balance Weights, and Low Speed Balancing.  Lot’s of practice is included throughout.


Upon completion of this course the participant will be more capable of evaluating turbine-generator balance programs, specifically the participant will be able to:
  1. Describe fundamental terms and concepts important to a vibration analysis.
  2. Relate the use of vibration measuring instruments to your applications.
  3. Describe normal conventions used during balancing and how they relate to your equipment.
  4. Demonstrate the ability to calculate a "first-shot" using the "one-shot method" for calculating that shot location.
  5. Demonstrate the ability to calculate a "second-shot" using the "measured-effect" method for calculating that shot location and size.
  6. Demonstrate the ability to translate calculated weight information to the actual installation of weights on any given rotor.
  7. Demonstrate the ability to conduct a "low-speed balancing" program on a bowed rotor.

Course Dates / Location / Fee

See 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, pay in advance, and pay for only 2 (the 3rd participant is free)! 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 course (clients' choice) if HPC should cancel any course.  HPC is not responsible for non-refundable airline tickets or other travel expenses under any circumstance.

What you will receive

  1. 1 copy of HPC Technical Services' textbook, Turbine Generator Balancing, as written by Harold Parker.
  2. A Certificate of Completion with 21 PDH awarded.

Course Synopsis

Day One

  • Vibration Theory:  We need to make sure everyone is one the same playing field before we get into serious vibratory discussions.  In this section we accomplish this goal by reviewing vibration definitions and terms.
  • Vibration Measuring Equipment:  A balancing engineers’ success depends greatly upon proper use and application of the vibration measuring equipment, whether it is OEM installed or a portable analysis kit.  We will review how to properly apply this equipment to the task at hand.  Discussions will include the older TSI systems, portable equipment such as an IRD, and Bently-Nevada systems.
  • Recording Data:  It is especially important to NOT error in the collection of vibration data.  It is easy to error, especially if the time is 0345 and you have been at the plant since the day before.  The best way to avoid error is to make use of conventions and to consistently follow these conventions.  This, along with actual data collection, will be discussed at this time.

Day Two

  • One Shot Calculations:  This presentation begins with a thorough discussion of High Spot Theory, then continues with the vector manipulations that are required to locate balance weights on a 2-bearing/span rotor.  Theories are presented and participants are then expected to practice.  Here is where we spend some time studying different machine types and relating some experiences that the instructor (and others) have gained on these machines.
  • Measured Effect:  Regardless of the success of the first balance weight installation, information has been gained.  This presentation is intended to practice the participant at analyzing this information and making use of what is learned to better install a 2nd shot (assuming it is needed).

Day Three

  • Practice:  Depending upon participants’ needs the opportunity will be presented to apply what has been learned on a table-top rotor kit.  Perfect practice makes perfect application and that is our goal.
  • Installing Balance Weights:  There are some hazards and some significant opportunities to err when installing weights physically onto rotors.  Hazards are discussed so they may be better avoided.  Conventions are discussed to help avoid balance weight location errors.  Procedures are discussed to be sure the weight is installed correctly.
  • Low Speed Balancing:  In this presentation we will discuss how to assess the need for low speed balancing, some things to do to avoid error, how to setup equipment, how to calculate mid-span weight placements when dealing with bowed rotors.

Frequently Asked Questions

  • Will HPC Technical Services bring this course to our location for our personnel only? YES, call or email Stephen Parker, for a price quotation.
  • Will HPC Technical Services customize the presentation at our site to suit our particular needs?
  • Is HPC Technical Services' textbook available for purchase as a reference document?   $195 + S&H.
  • 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 is 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 troubleshooting vibration problems on your equipment? In providing technical assistance in balance weight location?  Yes we can.  Call or contact Stephen  Parker, for our rate sheets and any further information required.

Steam Turbine Maintenance Certification

There are two levels of certification (Both levels require this course):
  1. Engineer
  2. Mechanical Technician
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,, for detail on this certification program.