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CRANES

TURBINE. CRANES. NEA39. PLANT STATUS!. General System Diagram of. Palo Verde Nuclear Generating Station. Legend::. Safety Injection Systems. Reactor Coolant System. To Switchyard. Containment Building. Main Steam System. Main Feedwater System. Main Condensate System.

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CRANES

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  1. TURBINE CRANES NEA39 Turbine Crane

  2. PLANT STATUS! General System Diagram of Palo Verde Nuclear Generating Station Legend:: Safety Injection Systems Reactor Coolant System To Switchyard Containment Building Main Steam System Main Feedwater System Main Condensate System CONTAINMENT SPRAY Circulating Water System Transformer Turbine Building Auxiliary Feedwater System Cooling Tower and Fans Safety Injection Tank Moisture Separator Reheaters MSSVs ADVs 8 8 8 Steam Generator Auxiliary Building MSIV Pressurizer MTSV Control Rods MSSS Shutdown Heat Exchanger HP LP LP LP Generator Bldg. Turbine Turbine Turbine Turbine Equipment Cooling MTCV Z From Auxiliary Feedwater Pumps Containment Spray Pump Turbine Bypass Valves Reactor Core Refueling Water Tank Condensate Pump Reactor Coolant Pump Main Condenser Low Pressure Safety Injection Pump (HP) Feedwater Heaters (LP) Feedwater Heaters Circulating Water Pump High Pressure Safety Injection Pump Feedwater Regulation Valve Main Feedwater Pump Polishing Demineralizers Containment Sump Turbine Crane PV Daily Status Report

  3. Turbine Crane

  4. Walk downs • Review instructions to ensure workable and adequate • Right Parts/materials/tools • Permits • Relevant Operating Experience Turbine Crane

  5. Pre Job Briefs • Understand the Task • Critical Steps identified and OE used AND what actions are being taken in reference to these two areas • Two Minute Drills: • Hazards identified AND what are actions are you taking Turbine Crane

  6. Procedure Use & Adherence • WO / procedure in hand & latest revision • Place keepers being used • Sign steps as you go • Follow & understand steps - STOP if can't or don't Turbine Crane

  7. TURBINE CRANE • Terminal Objective Given references provided by the Instructor, the Plant Electrician will maintain Turbine Building Cranes as demonstrated by achieving a minimum of 80% on a written examination. Turbine Crane

  8. . Multi Stud Tensioner

  9. PRE-JOB BRIEF • Identify Critical Steps • Identify Error Precursors • Worst thing that can happen • Error prevention defenses to be used • Actions to assure proper configuration control Turbine Crane

  10. TURBINE CRANE EO 1.7 Describe the Operation of the Turbine Building Crane

  11. Basic Startup and Operation • Verify power is available from (X)E-NGN-L15D2 through a disconnect switch (X)EE-NGL-NGN-W01 • This disconnect is located in the Turbine Building 176’, plant north near the Generator End. Turbine Crane

  12. Turbine Crane

  13. Turbine Crane

  14. Basic Startup and Operation • The Crane Operator would operate the Walkway Mainline Disconnect Switch and then CB104 (250A Breaker – Right Side Panel), the 40A Lighting Transformer Circuit Breaker and the Lighting Contactor Circuit Breaker. Turbine Crane

  15. Turbine Crane

  16. Turbine Crane

  17. Turbine Crane

  18. Turbine Crane

  19. CB 104 Turbine Crane

  20. Turbine Crane

  21. Basic Startup and Operation • For Chair Operational Control: • CB113, CB604 and CB627 must be closed to energize the master control relay CR604 and the mainline relay CNT627 after the reset pushbutton is depressed. • All Variable Frequency Drives will now be energized and await commands from their Energized PLC’s. • With the remaining control breakers in the closed position, the operators chair should now be fully functional. Turbine Crane

  22. Turbine Crane

  23. Turbine Crane

  24. Main Line Contacts Motor Resistors Trolley Motor Trolley Tach Trolley Brake Follow the Numbers Turbine Crane

  25. CNT 627 Turbine Crane

  26. Operational / Design Example • Main Hoist Control: • When the operator selects and operates the Main Hoist Lower Joystick the following logic occurs: (172) • 115Vac Power is supplied to the MHL Joystick contacts (JS3016) via the Main Crane Enclosure Power. • The joystick output (Discreet) signal is applied to the Flex I/O input module PLC2904 (171) • This signal is now assigned an address (I:1.1/00) and it is delivered to the Remote I/O Adapter module (188) Turbine Crane

  27. Main Hoist Joystick Turbine Crane

  28. Main Hoist Joystick Turbine Crane

  29. 115Vac 12Vdc Turbine Crane

  30. 115Vac Turbine Crane

  31. DiscreteInput Signal 12Vdc Analog Signal Assigned Address I:1.1/00 Assigned Address I:1.2/00 Turbine Crane

  32. Remote I/O Adapter Module In the Operators Cab Turbine Crane

  33. Operational / Design Example • Main Hoist Control: • When the operator selects and operates the Main Hoist Lower Joystick the following logic occurs: • The Remote I/O Adapter module communicates with the Scanner module and the signal is supplied directly to the CPU. • The CPU reads the signal and makes the decision and sends a corresponding signal to a Relay Output Module (PLC 2445). • This signal is now sent to the Magnetek VFD (AFD 228 Term S2) Turbine Crane

  34. CPU SCANNER PLC OUTPUT MODULE PLC2445 Turbine Crane

  35. Discrete Signal sent to S2 Turbine Crane

  36. Operational / Design Example • Main Hoist Control: • When the operator selects and operates the Main Hoist Lower Joystick the following logic occurs: • 12Vdc Power in supplied to the MHL Joystick Potentiometer (JS3016) via 12Vdc PWR3005 • The joystick output (Analog) signal is applied to the Flex I/O Analog Input module PLC 2944 • This signal is now assigned an address (I:1.2/00) and it is delivered to the Remote I/O Adapter module Turbine Crane

  37. Analog Output 0-12Vdc Turbine Crane

  38. DiscreteInput Signal 12Vdc Analog Signal Assigned Address I:1.1/00 Assigned Address I:1.2/00 Turbine Crane

  39. Remote I/O Adapter Module In the Operators Cab Turbine Crane

  40. Operational / Design Example • Main Hoist Control: • When the operator selects and operates the Main Hoist Lower Joystick the following logic occurs: • The Remote I/O Adapter module communicates with the Scanner module and the signal is supplied directly to the CPU. • The CPU reads the signal and makes the decision and sends a corresponding signal to a Relay Output Module (PLC 1905). • This 4-20Ma signal is now sent to the Magnetek VFD (AFD 228 Term A2) Turbine Crane

  41. Analog (4-20Ma) Signal sent to A2 Turbine Crane

  42. Operational / Design Example MAIN HOIST Auxiliaries Control: • When the operator selects and operates the Main Hoist Lower Joystick the following logic occurs (continued): • 115Vac Power is supplied to the MHL Lower Limit Switch (LS2154) via CB702 • The limit switch position will determine the ability of the crane to further lower. • This signal is sent to PLC 2146 is now assigned an address (I:1504) and it is routed to the CPU Turbine Crane

  43. Geared Limit Switches Assigned Software Address Turbine Crane

  44. PLC2146 Input Module Turbine Crane

  45. Operational / Design Example MAIN HOIST Brake Control: • When the operator selects and operates the Main Hoist Lower Joystick the following logic occurs (continued): • 115Vac Power is supplied to the VFD (AFD228) • When the joystick is selected for lower, the AFD discreet input S2 receives a signal as described above. • This signal is now operates a set of contacts (M0-M1 & M2-M3) which in turn actuate Relays CNT1003 and CNT1005 • The Brakes will now release as directed by the VFD and the hoist may be operated. Turbine Crane

  46. Brake Contacts Turbine Crane

  47. Operational / Design Example MAIN HOIST Encoder: • When the operator selects and operates the Main Hoist Lower Joystick the following logic occurs (continued): • Two Main Hoist Encoders will now begin to provide an output. • Encoder “A” (Motor Encoder) will provide input directly to the VFD (AFD228). • The VFD will in turn provide an output signal to PLC 1306 • The signal is now assigned a software address (I:0300) and it is routed to the CPU • The Main Hoist Drum Encoder will also read hoist motion and provide this signal to PLC 1306. • The signal is now assigned a software address (I:0301) and it is routed to the CPU Turbine Crane

  48. Turbine Crane

  49. Operational / Design Remaining Equipment: • The Aux Hoist, Trolley, Bridge, Service Hoist and Trolley will all function in a similar manner to the Main Hoist. Turbine Crane

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