CT515 – (GE) Mk-IV Gas Turbine Controls

CT515 – (GE) Mk-IV Gas Turbine Controls

5 days - 35 PDH Credits Awarded



A gas turbine power plant can operate for years with little to no difficulty.  Then, on that hot August day, when needed the most, it fails to start.  We all know the drill!  Or, perhaps, the unit does start, but the number of alarms are significant.  How well personnel resolves this problem depends upon how well personnel (1) understand the “big picture” of how all the gas turbine component/systems relate, (2) how familiar personnel are with the print systems, and (3) the ability to interpret alarm information as applied to the available prints.  This course targets the need for technicians/engineers to operate, maintain, calibrate and troubleshoot the Mk-IV control system. First, learn the big-picture.  Next, learn how to maximize use of the OEM provided information to troubleshoot.  Finally, take the information provided by the Mk-IV system and apply it.                               Topical Outline includes:  Mk-IV Hardware Familiarization, Operator Interface, Available Documentation, Reading Elementaries, FSR_SU/_ACC/_SD, FSRN, FSRT, Fuel Control and valve positioning, Water Injection, Variable Inlet Guide Vane, Protective Circuits


Upon completion of this course the participant should be able to:
  1. Demonstrate the ability to use OEM provided documentation that will include the Control Specifications, Elementaries, Application Manual, and P&IDs.
  2. Demonstrate the understanding of the Mk-IV hardware components, how they are accessed, and how they communicate.
  3. Demonstrate the ability to troubleshoot an equipment alarm, given an Alarm Drop Number.
  4. Demonstrate the ability to interpret the more routine diagnostic alarms and recognize appropriate actions.
  5. Demonstrate the ability to follow the major "control signal path" through the elementaries.
  6. Demonstrate the ability to trace the derivation of a command signal to the servomechanisms.
  7. Demonstrate the knowledge necessary to calibrate turbine valve mechanisms.
  8. Demonstrate the ability (or knowledge -- based upon equipment availability) to more efficiently use the Mk-IV screens for evaluating/calibrating systems.
  9. Demonstrate the ability (or knowledge -- based upon equipment availability) to force logic to facilitate calibration.
  10. Describe how to change constants or re-program ladder logic such as to add contact input/outputs, add alarms, and/or alter sequencing.
  11. Given plant drawings, trace a signal to/from a field device through appropriate terminal boards, through circuit boards, to a digital "signal name".
  12. Demonstrate the ability to follow signal flow to/from the "4" circuits to trip/reset the machine.

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.


All HPC instructors are educated ‘experts’ on the subjects they teach, with years of relevant hands-on experience (typically 20+ years), and have proven instructional skills. Brief resumes can be looked up on HPC’s website, www.TurbineGeneratorTraining.com.

Frequently Asked Questions

  • Will HPC Technical Services bring this course to our location for our personnel only? Will HPC customize the presentation 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 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 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 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


  • Introduction
  • Mk-IV Hardware Familiarization
  • Operator Interface
  • Available Documentation


  • Reading Elementaries
  • FSR_SU/_ACC/_SD: Description, Algorithm, Calibration and how this circuit may influence operations.


  • FSRN: Description, Algorithm, Calibration and how this circuit may influence operations
  • FSRT: Description, Algorithm, Calibration and how this circuit may influence operations


  • Fuel Control: Servo Mechanisms, Gas Control Valve, Liquid Control Valve, and Fuel Splitter
  • Water Injection: Description, Algorithm, Calibration and how this circuit may influence operations.


  • Variable Inlet Guide Vane
  • Protective Circuits: L4, Overspeed Trip, Emergency Overspeed Trip, Overtemperature Trip, Vibration, 20FG/20FL

What you will receive

  1. 1 copy of HPC Technical Services' textbook, (GE) Mk-IV Gas Turbine Controls, as written by Harold Parker. It is a valuable desktop reference in addition to being able to enhance the learning process.
  2. A Certificate of Completion with 35 PDH.

Gas Turbine I&C Certification

There are two levels of certification (Both levels require this course):
  1. Engineer
  2. I&C 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, www.TurbineGeneratorTraining.com, for detail on this certification program.