TG505 – (W) AEH Steam Turbine Controls

TG505 – (W) AEH Steam Turbine Controls

Description

Control system reliability can be a matter of skilled routine maintenance activity and proficient troubleshooting capability.  Availability and reliability can be affected by the quality of service performed by maintenance personnel.  This course is specifically directed to assist these personnel in the accomplishment of this important goal. Learn to use effective routine maintenance and calibration procedures.  Learn what checks can be performed on-line and how to safely perform these checks.  By understanding the major signal control paths (and the “big picture”) you will increase the likelihood of accurate problem analysis.  Learn how to quickly determine whether the problem is likely electrical, mechanical or hydraulic. Topics include: Turbine Steam Valves and Actuator • System Operation • EH Fluid• Auto Stop • Speed Control • Load Control • Tracking • Throttle Valve Control • Governor Valve Control • OPC, LDA, AGG • Servo Amplifiers • Trip System • Card and System Calibration • Troubleshooting HPC is prepared to instruct this course as developed by equipment-experienced instructors. Troubleshooting experience is given. The instructional experience is unmatched. The dedication to our accomplishing stated course objectives are a matter of policy.  The course is recommended for Engineers and E&I Technicians. OBJECTIVES Upon completion of this course the participants will be able to:
  1. Demonstrate the ability to code and read AEH Controller drawings
  2. Demonstrate the knowledge necessary to calibrate the Controller
  3. Demonstrate the knowledge needed to logically use Flow Charts to identify and isolate problems
  4. Demonstrate the knowledge necessary to rewire Controller circuits
  5. Demonstrate the knowledge to calibrate P/C cards
  6. Demonstrate the knowledge necessary to replace P/C cards (on and off-line)
Course dates/location/fee Course is conducted On Site Only What you will receive
  1. 1 copy of HPC Technical Services' textbook, (W) AEH Steam Turbine Controls.
  2. A "Certificate of Completion" with 35 PDH awarded.
Frequently asked questions
  • Will HPC Technical Services bring this course to our location for our personnel only? YES, call or email Stephen Parker, stparker@TurbineGeneratorTraining.com 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? No, this course of study is too dependent upon print reading.
  • 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 perform a functional checkout and calibration of your control system during the upcoming outage OR provide troubleshooting support should it be required? Yes we can.  Call or contact Stephen Parker, stparker@TurbineGeneratorTraining.com for our rate sheets and any further information required.

Course Outline

  1. Introduction to Course
  2. Steam Turbine flow Chart
    1. Steam path
    2. Steam control valves
    3. EH high-pressure control oil
    4. Transducer identification
    5. AEH controller interface
  3. Control and Lube Oil System
    • EH Reservoir assembly
      1. Pumps
      2. Filters
      3. Pressure switches and indicators
      4. Unloading and relief valves
      5. Fluid level switches and indicators
      6. Temperature switch and indicator
      7. Heat exchangers
      8. Drain lines and accumulators
    1. High-pressure accumulators
    2. Valve block assemblies
      1. Governor
      2. Throttle
      3. Interceptor
      4. Reheat stop
    3. Auxiliary governor and emergency trip block
    4. Interface valve
    5. Lube oil system interface
      1. Trip block assembly
      2. Protective devices
  4. AEH controller block diagram
    • . Automatic control digital logic
  1. Analog speed control
    1. Throttle valve control
    2. Transfer control
    3. Governor valve control
  2. Analog load control
    1. Speed feedback and regulation
    2. Load feedback
  3. Manual mode digital logic
  4. Analog tracking logic
  5. Test point logic
  1. Operator Control and indicator Panels
    • . Automatic operation
  1. Manual control
  2. Limits and inhibits
  3. Indicators
  4. Logical troubleshooting
  1. AEH Controller Logic Flow Chart
    • . Digital logic
      1. Switches and contact closures
      2. NAND gate logic
      3. Counters
      4. Comparators
      5. Tracking logic
  1. Analog logic
    1. Frequency to analog converters
    2. Digital to analog converter
    3. Operational amplifiers
    4. Analog Switches
    5. Servo card logic
  • AEH controller system logic
    • . Operator automatic logic
      1. Remote automatic mode
      2. Operator manual mode
      3. Protective modes
    • Double-Ended Wire and String List
      • . Connector location and identification
  1. Printed circuit card location and identification
  2. Signal name identification
  3. Wire terminal points
  1. AEH Controller Wiring Diagrams
    • . Signal interface Connections
  1. Circuit tracing
  2. Printed circuit card
    1. Location
    2. Logic
    3. Identification
    4. Calibration
  3. Digital and analog logic
  4. Code all diagram circuit logic for fast and accurate troubleshooting and problem solving solutions
  1. AEH Controller Inspection
    • . Printed circuit card identification and location
  1. Check and record program and patch plug changes
  2. Check and record maintenance panel values
    1. Pot settings
    2. Switch Settings
    3. Test point voltages
  3. Course Review