Turbine Crane CRANES TURBINE NEA39

Turbine Crane PLANT STATUS! PV Daily Status Report

Turbine Crane

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

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

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

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

Multi Stud Tensioner.

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

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

Basic Startup and Operation 1.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

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

CB 104

Turbine Crane

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

Motor Resistors Trolley TachTrolley Brake Trolley Motor Main Line Contacts Follow the Numbers

Turbine Crane CNT 627

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

Main Hoist Joystick

Turbine Crane Main Hoist Joystick

Turbine Crane 115Vac 12Vdc

Turbine Crane 115Vac

Turbine Crane 12Vdc Analog Signal Discrete Input Signal Assigned Address I:1.1/00 Assigned Address I:1.2/00

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

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

CPU SCANNERPLC OUTPUT MODULE PLC2445

Turbine Crane Discrete Signal sent to S2

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

Analog Output 0-12Vdc

Turbine Crane 12Vdc Analog Signal Discrete Input Signal Assigned Address I:1.1/00 Assigned Address I:1.2/00

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

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

Analog (4-20Ma) Signal sent to A2

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

Geared Limit Switches Assigned Software Address

Turbine Crane PLC2146 Input Module

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

Brake Contacts

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 The signal is now assigned a software address (I:0301) and it is routed to the CPU Turbine Crane

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

Exercise Trace the Main Trolley “out” signal Flowpath Turbine Crane