ehtc o&m-edn.pdf
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TARAPUR ATOMIC POWER PROJECT-4 Page 1 of 24 O & M INSTRUCTIONS & FAULT DIAGNOSTICS FOR EHTC REV 00
BHEL DRG.NO. TW/409/1154 07/03
O & M INSTRUCTIONS & FAULT DIAGNOSTICS
FOR
ELECTRO-HYDRAULIC TURBINE CONTROLLER(EHTC)
REV NO.
DATE OF ISSUE
TOTAL NO. OFPAGES
BHEL
PREPARED BY : Amit Pandey, Engineer(D)
APPROVED BY : S.K. Ranganath, Sr. Mgr (D)
(Name, designation & Date)
File Name:
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REVISION CONTROL SHEET
TITLE: O & M INSTRUCTIONS & FAULT DIAGNOSTICS FORELECTRO-HYDRAULIC TURBINE CONTROLLER
REV DATE DESCRIPTION OF REVISED BY APPROVED BY NO REVISION
00 15/07/03 ORIGINAL ISSUE AMIT PANDEY S.K. RANGANATH
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INDEX PAGE NO
1.0 INTRODUCTION 41.1 PURPOSE 41.2 REFERENCE DOCUMENTS 52.0 SYSTEM ARCHITCTURE 63.0 OPERATOR INFORMATION 83.1 VISUAL ALARM ANNUNCIATION SYSTEM FACIA 83.2 CONSOLE TILES FOR INDICATION 83.3 CONSOLE INDICATIONS AND OPERATING PUSHBUTTONS 83.4 HMI OWS IN PL-09 AND OIC 5 & 6 104.0 FAULT DIAGNOSTICS 124.1 PROCESS ALARMS 124.2 DIAGNOSTIC SIGNALS 155.0 ABBREVIATIONS USED 18
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1.0 INTRODUCTION
The subsystem Electro-Hydraulic Turbine Controller (EHTC) isenvisaged with two main components
a) The control implementation which generates valve lift set pointfor the Two Electro Hydraulic Converters EHC-1 and EHC-2.This control implementation consists of Process controls(Speed Control, Valve Lift Control, Main steam MinimumPressure Control) and two independent Position Controllersdriving each of EHCs. Both the controls are identical to eachother.
(This electronic controller part is envisaged in cabinet CJJ01)See fig-1 Page 19 of 24.
b) A Hydraulic system, which positions the valves according to liftSignal, consisting of EHC-1 & EHC-2 and their follow uppistons and servo-motors.
For details of interconnection of electronic controller with hydraulicsystem, refer document Write up on Electro- Hydraulic Turbine controller(EHTC) Doc. No. 41330000486 (NPC Drg. No. TAPP4/64110/5526/DN)
1.1 Purpose:
This document details the information about EHTCimplementation in following areas:
- Subsystem / system architecture- Operator Interfaces viz.
Visual alarm annunciation faciaControl tiles in MCR panel PL-10Operator Work Station in MCR panel PL-09MMI OWS in OIC 5 & 6Process Status & Process Faults
- Detailed information on Process Faults, Fault Diagnosis & alarmtracing and identifying the cause of alarm for Electro-HydraulicTurbine Controller Subsystem.
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1.2 Reference documentsThe documents related to EHTC subsystems and assisting this documentare listed as below:
a) Write up on Electro- Hydraulic Turbine controller (EHTC) Doc. No.41330000486 (NPC Drg. No. TAPP4/64110/5526/DN/R0)
b) Hardware Design Document for EHTC Doc No. TW/409/1068 (NPCDrg. No. TAPP4/64110/5873/DN/R0)
c) Software Design Document for EHTC Doc No. TW/409/1057 (NPCDrg. No. TAPP4/64110/5860/DN/R0)
d) SIGNAL FLOW DIAGRAM DRG No. 031028SFS105 (NPC DRG.TAPP4/64110/5731/WD)
e) CUBICLE & RACK DIAGRAM DRG No. 3-656-00-01746 (NPCDRG. TAPP4/64110/5728/GA)
f) Function Control Diagram Drg. No. ED031027FC105 (NPCDRG No.TAPP4/64110/5730/ED)
g) EPROM LISTING FOR CJJ01 Doc No. 1001.TCD (NPC DRGNo.TAPP4/64110/5727/ED)
h) MEMORY MAPPING For STATION S105i) PARAMETER LISTING For STATION S105j) Test and Setting Instructions for Cabinet CJJ01, Doc. No.
TI/409/656/01/1006.
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2.0 SYSTEM ARCHITECTURE
Control implementation in CJJ01 cabinet comprises of the following 2 parts:
1. PROCONTROL IMPLEMENTATION: The process controller systemfunction Electro hydraulic Turbine control System is implemented as asingle local bus design in PROCONTROL P13. This part comprises offollowing functions:
a) INPUT ACQUISITION: Speed, load, SGPC Output and Pressuredeviation signals are takeno Speed actual 1,2 & 3 signals are connected to three different
modules Location BA17, CA17 & DA17 Input Module EI05o Load actual 1,2 & 3 signals are connected to three different
modules Location CA31, CA33 & CA35 Input Module EA02o SGPC control O/P 1 & 2 are connected to separate modules
Location CA31 & CA33 Input Module EA02o Pressure deviation 1 & 2 are connected to separate modules
Location CA31 & CA33 Input Module EA02
b) PROCESSING: Field signals acquisition, Limit Value generation &Controller implementations:
o Speed, load, SGPC deviation and pressure deviation signalsare taken and processed in Two out of Three (2V3) or Oneout of Two (1V2) fashion, as applicable. Required limit valuesas well as indication signals are generated.
o Speed Controller implementationo Load Controller implementationo Pressure Controller - HP implementationo Control Selection implementation
c) OUTPUT GENERATION: for position controllers and Generalalarms & COIS interface for TG package controls (hardwired groupalarms)
2. NON-PROCONTROL IMPLEMENTATION: Hardware PositionController for both the EHCs. This hardware control section isenvisaged in Rack EA of cabinet CJJ01.
The signal from control selection circuit (envisaged in Part 1 of above) isoutputted in 2 sets of 3 channels. Middle out of three Position references isselected by voting module.
The system has 2 position measurements for each EHC and MAX of thesepositions is outputted to the Position controller.
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The EHC position controller is a PID controller. Control deviation is derivedfrom position set point and actual lift and forms the input to controller. Theoutput is given to Plunger coil of EHC. The short circuit or grounding of coil isannunciated as Plunger coil fault.
In case of open circuit of plunger coil of one of the EHC, other EHC position controller determines the EHC position.
The interface of Position controllers for EHC-1 & EHC-2 is shown in fig-1 Page 19 of 24.
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088 BW
BA
CD
100000
3.0 OPERATOR INFORMATION
The plant operations are carried out from MCR 6610 PL - 10 panel and HMI OWSin MCR 6610 - PL - 09 and OIC 5 & 6. For operating procedures, refer documentWrite up on Electro- Hydraulic Turbine controller (EHTC) Doc. No. 41330000486(NPC Drg. No. TAPP4/64110/5526/DN/R0).
The information available to operator can be broadly categorized into following:
3.1 VISUAL ALARM ANNUNCIATION SYSTEM FACIA
This is available at the top of MCR 6610 PL - 10 panel. The windowcorresponding to this sub-system is EHC SYSTEM TROUBLE(Annunciation No. 1036, COIS No. 7036, Window No. Y16)
3.2 CONSOLE TILES FOR INDICATION
Digital speed indicator: indicates Turbine actual speedUpper Temperature Margin indicator: indicates upper temperaturemargin range 0-150 deg KLower Temperature Margin indicator: indicates lower temperaturemargin range 0-150 deg K
These are located in Top vertical portion of MCR panel
MCR 6610 PL - 10 VERTICAL PORTION
3.3 CONSOLE INDICATIONS AND OPERATING PUSHBUTTONS
1. Console indicators for Process Parameters! LIFT RATE 0-10% /min! DEVIATION LIFT CONTROL +/- 100%! HP GOV V1 POSITION 0-100%! LIFT SET POINT 0-100%! LIFT SET POINT DELAYED 0-100%
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088
AA
AS
100000
! LIFT SET POINT MAX 0-100%! HP GOV V2 POSITION 0-100%! SPEED SET POINT 0-100%! SPEED SET POINT SPREAD SCALE 0-100%! SPEED SET POINT DELAYED 0-100%! DEVIATION PRESSURE CONTROL +/- 50%! STARTING DEVICE POSITION 0-100%! SPEEDER GEAR POSITION 0-100%
2. Process Status Console Indications! ESV 1 OPEN / CLOSE! ESV 2 OPEN / CLOSE! LIFT SET POINT MANUAL / AUTO! LIFT GRADIENT ON /OFF! LIFT CONTROL ON /OFF! REFERENCE LIMITER STOP! SYNCHRONIZER ON / OFF! SYNCHRONIZER REL / LOCKED! SYNCHRONIZER BLOCKED / STARTED! PRES CTRL IN ACTION / LIFT CTRL IN ACTION / SPD CTRL
IN ACTION! TSE INFLUENCE ON / OFF
3. Operating Pushbuttons! LIFT RATE ON / OFF! LIFT RATE RAISE / LOWER! TSE INFLUENCE ON / OFF! LIFT SET POINT MANUAL / AUTO! LIFT CONTROL ON /OFF! LIFT SET POINT RAISE / LOWER! LIFT SET POINT MAX RAISE / LOWER! SPEED SET POINT RAISE / LOWER! STARTING DEVICE OPEN / CLOSE! SPEEDER GEAR OPEN / CLOSE! SET POINT CONT SPD LIFT RELEASE! SYNCHRONIZER REL / LOCK! SYNCHRONIZER ON / OFF
These are located in the Horizontal portion of MCR panel
MCR 661 PL - 10 HORIZONTAL PORTION
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3.4 HMI OWS IN PL-09 AND OIC 5 & 6
1. PLANT PICTURE NO P501: TURBINE CYCLEThis plant picture shows overall Steam path and Parameters of
Inlet Steam, Reheat Steam, Extraction Steam & Turbine Exhaust.Main Control Valves (Governing Valve) & CSDVs positions
alongwith command for Extractionvalves are also given on this picture. Refer fig-3 Page 21 of 24.
2. PLANT PICTURE NO P513: EHTCThis Plant Picture is configured for operators use during rolling,
synchronising, loading by Lift control, loading / unloading by minimum pressure control, Plant shutdown, Load throw off and other conditions.
This Plant picture comprises of all Governing Parameters &status viz. SPEED SET POINT, SPEED SET POINT DELAYED,SPEED CONTROLLER OUTPUT, LIFT RATE, LIFT SET POINT, LIFTSET POINT DELAYED, SGPC OUTPUT CH 1 & CH2, DEVIATIONLIFT CONTROL, LIFT SET POINT MAX, SGPC PR DEVIATION CH1& CH2, DEVIATION PRESSURE CONTROL, MIN PRESSURECONTROLLER OUTPUT, GOVERNERs OUTPUT to POSITIONCONTROLLER, EHC 1 POSN 1 & 2, EHC 2 POSN 1 & 2, HP GOV V1POSITION, HP GOV V2 POSITION, STARTING DEVICE POSITION,SPEEDER GEAR POSITION, TEMP MARGIN UPPER / LOWER,LOAD MARGIN UPPER / LOWER, ESV 1 OPEN / CLOSE, ESV 2OPEN / CLOSE, LIFT SET POINT MANUAL / AUTO, LIFT GRADIENTON /OFF, LIFT CONTROL ON /OFF, REFERENCE LIMITER STOP, PRESCTRL IN ACTION / LIFT CTRL IN ACTION / SPD CTRL IN ACTION,TSEINFLUENCE ON / OFF, EHTS SYSTEM TROUBLE and commandoperations viz. LIFT RATE ON / OFF,LIFT RATE RAISE / LOWER,TSE INFLUENCE ON / OFF, LIFT SET POINT MANUAL / AUTO, LIFTCONTROL ON /OFF, LIFT SET POINT RAISE / LOWER, LIFT SETPOINT MAX RAISE / LOWER, SPEED SET POINT RAISE / LOWER,STARTING DEVICE OPEN / CLOSE, SPEEDER GEAR OPEN /CLOSE.
Links are available to jump to Plant Schematics-! P501: TURBINE CYCLE! P502: TSE METAL TEMPERATURES! P542: EHC SYSTEM TROUBLE! P543: TURBINE STARTUP! P523: TURB STARTUP / SHUTDOWN! P515: TURBINE TRIP STATUS
Refer fig-4 Page 22 of 24.
3. PLANT PICTURE NO P542: EHC SYSTEM TROUBLEUpon occurrence of alarm EHC SYSTEM TROUBLE on
Plant schematic P513, operator can click and come to this Plantschematic. This Plant Schematic shows all the individual componentsleading to group alarm EHC SYSTEM TROUBLE for the ease of
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tracing the root cause of alarm. Apart from this it also shows vitalgoverning parameters like SPEED ACTUAL CH1, CH2 & CH3, LOAD
ACTUAL CH1, CH2 & CH3, SGPC OUTPUT CH 1 & CH2, SGPC PRDEVIATION Ch1 & Ch2, EHC 1 POSN 1 & 2 and EHC 2 POSN 1 & 2.
Operator can go back to P513: EHTC Plant schematic fromhere. Refer fig-5 Page 23 of 24.
4. PLANT PICTURE NO P543: TURBINE STARTUPThis Plant schematic configured for operators use for Resetting
turbine for startup after a Trip has occurred. This comprises of AuxStartup Fluid, Aux Trip Fluid, Startup Fluid, Aux secondary Fluidparameters and status for Turbine Trip and HP ESV 1 & 2.
Command for STARTING DEVICE OPEN / CLOSE &SPEEDER GEAR OPEN / CLOSE and position for both is also shownon this Plant schematic.
Operator can go back to P513: EHTC & P523: TURBSTARTUP / SHUTDOWN Plant schematics from here. Refer fig-6Page 24 of 24.
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4.0 FAULT DIAGNOSTICSFault Diagnostics of Input, Process and output signals are divided into two
parts -:Process Faults -: These alarms are related to Process Parameters
and are Logged on HMI with Time stamp. Referdetails given in sec. 4.1
Module Diagnostic Faults -: This refers to remote monitoring of ModuleFaults. Refer details given in sec. 4.2
4.1 PROCESS ALARMS / FAULTS
Following process alarms are generated in EHTC subsystem
1. Actual Positions of EHC 1 & 2 signal input fault2. Plunger Coil Fault of EHC 1 & 23. Deviation among two positions > 3% for EHC 1 & 24. Speed Acquisition FAULT5. Load Measurement Deviation6. Pressure Deviation Faulty7. Href Hact for EHC 1 & 2 > 3%8. SGPC Output Faulty
Any of these signals results in a group alarm EHC SYSTEMTROUBLE. The group alarm is made available to COIS as well as AlarmAnnunciation Facia. Group as well as individual alarm is also logged inMMI with time stamping.
These alarms are generated in IdLoop 00MAY01DU005 fordetails please refer Function Control Diagram Drg. No.ED031027FC105 (NPC DRG No.TAPP4/64110/5730/ED) and SoftwareDesign Document for EHTC Doc No. TW/409/1057 (NPC Drg. No.TAPP4/64110/5860/DN).
ALARM / FAULT TRACING
1. Actual Positions of EHC 1 & 2 signal input fault
00MAX45CG001A XQ0700MAX45CG001K XQ0700MAX45CG002A XQ0700MAX45CG002K XQ07
are connected to location EA30, EA01, EA12 & EA14 respectively.Power supply to LVDT transmitter Open-circuit is detected and it isannunciated as module fault. This makes one of the components ofGroup alarm- EHC Trouble. Check for wiring and sensorcorrectness. Still fault persisting then change the module with
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spare one. The module address and all the switch settings shall bemade in the line with previous module as per test and settinginstructions.
2. Plunger Coil Fault of Electro Hydraulic Converter 1 & 2This alarm comes on coil fault of Electro Hydraulic
Converter or grounding of coil. Check for circuit healthiness. Eventhen fault is persisting, check for Respective AVLAA module atEA09 or EA22. This module generates Plunger Coil Faults wheneither of the floating outputs driving the EHC gets grounded. ForDetails on Module, Refer Procontrol module data sheetsvolume 1-6.
3. Deviation among two positions > 3% for EHC 1 & 2Each EHC has been provided with 2 positions
Measurements-00MAX45CG001A XQ01 addr. EE00MAX45CG001K XQ01 addr. E5and00MAX45CG002A XQ01 addr. E600MAX45CG002K XQ01 addr. EA
are connected to location CA31, CA35, CA35 & CA33respectively. Check process values on SK06 kit. Check formodule faults and wiring correctness. That particular channelmay be checked by feeding 4-20 mAmp signal and checking0-100%. These signals are generated from AKCAA modulesat locations EA30, EA01, EA12 & EA14 respectively. Checkfor wiring and sensor correctness. Still fault persisting thenchange the module with spare one. The module address andall the switch settings shall be made in the line with previousmodule as per test and setting instructions.
4. Href Hact for EHC 1 & 2 > 3%The fault tracing and corrective measure for this fault is alsothe same as given for above point.
5. Speed Acquisition FAULTSpeed actual 1,2 & 3 signals are connected to three differentmodules Location BA17, CA17 & DA17 Input Module EI05 andthat is further processed in middle out of three mode so no singlepoint failure results in loss of control. Any channel fault andDeviation fault is annunciated and this make one of thecomponents of Group alarm- EHC Trouble. The signal flow pathof Speed signals is shown in fig 2 page 20 of 24.
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If any particular channel is giving different value, check thevalues at TMR speed measuring rack GA in cabinet CJJ10. If thevalues are correct there, check the interconnection between CJJ10and CJJ01 and respective EI05 module.
If TMR speed measuring rack GA in cabinet CJJ10 is alsoshowing different values that indicates problem in TMR speedmeasuring rack or in Speed Probe itself. For details of FaultDiagnosis refer O&M instructions for OTSS subsystem (cabinetCJJ10).
6. Load Measurement DeviationLoad actual 1,2 & 3 signals are connected to three differentmodules Location CA31, CA33 & CA35 Input Module EA02 andthat is further processed in middle out of three mode so no singlefailure results in loss of control. Deviation fault is annunciatedand this makes one of the components of Group alarm- EHCTrouble.
On occurrence of deviation fault, Check process values onSK06 kit. Check for module faults and wiring correctness.That particular channel may be checked by feeding 4-20mAmp signal and checking 0-100%. If module is faulty, thenchange the module with spare one. The module addressand all the switch settings shall be made in the line withprevious module as per test and setting instructions.
If the modules are ok, it means that problem is in either CCA09or CJJ05 panel, where the signal is multiplied and Loadmeasurement Unit LMU is mounted. For details of FaultDiagnosis refer O&M instructions for cabinet CCA09.
7. SGPC Pressure Deviation FaultySGPC Pressure deviation 1 & 2 are connected to separatemodules Location CA31 & CA33 Input Module EA02. Anydeviation between two channels is annunciated and faultychannel is taken out of control circuits. Either of Input signalfaults makes one of the components of Group alarm- EHCTrouble.
On occurrence of deviation fault, Check process values onSK06 kit. Check for module faults and wiring correctness. Thatparticular channel may be checked by feeding 4-20 mAmp signaland checking 0-100%. If module is faulty, then change themodule with spare one. The module address and all the switchsettings shall be made in the line with previous module as pertest and setting instructions.
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8. SGPC controller output FaultySGPC controller O/P 1 & 2 is connected to separate modulesLocation CA31 & CA33 Input Module EA02. Any deviationbetween two channels is annunciated and faulty channel is takenout of control circuits. Either of Input signal faults make one ofthe components of Group alarm- EHC Trouble.
On occurrence of deviation fault, Check process values onSK06 kit. Check for module faults and wiring correctness. Thatparticular channel may be checked by feeding 4-20 mAmp signaland checking 0-100%. If module is faulty, then change themodule with spare one. The module address and all the switchsettings shall be made in the line with previous module as pertest and setting instructions.
4.2 MODULE DIAGNOSTIC FAULTS
Diagnostic Station monitors Group Alarms of module faults originatingfrom each Local Bus. Diagnostic Station is connected to all Local Buses throughIPB (Intra Plant Bus). It consists of a control hardware consisting ofMicrocomputer and Local Bus / IPB interface alongwith a Keyboard, DisplayMonitor and Printer.
The course of action in case of fault is given in Flow chart for Modulefault tracing at page 17 of 24.
The following group alarms are sourced from this subsystem, and areannunciated in Diagnostic station. Messages in different colours for specificGroup Alarms with Source Local Bus identification and time stamp aredisplayed on the monitor. These alarms are printed ONLINE on diagnosticstation.
The maintenance engineer can further look in the Panel CJJ01 forfurther tracing of the Cause of Fault.
IF A PARTICULAR MODULE IS FAULTY, THAT SHALL BEREPLACED ON LINE. THE MODULE ADDRESS AND ALL THE SWITCHSETTINGS SHALL BE MADE IN LINE WITH PREVIOUS MODULE AS PERTEST AND SETTING INSTRUCTIONS.
Various Faults (group alarms) displayed at Diagnostic Station are:
SME0 STATION DISTURBANCE (Bk02 module removed)Action: Check for BK02 module at location DA34 in panel
CJJ01If inserted properly check for connections as persheet no 21 of 28 in CUBICLE & RACK DIAGRAMDRG No. 3-656-00-01746(NPC DRG. TAPP4/64110/5728/GA).
SMA MCC DISTURBANCE (If STA is wired)Not Applicable for this subsystem
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SMR CONTROL DRIVE DISTURBANCE (Analog Drive module: NotApplicable for TAPP)
SMM TORQUE SWITCH OPERATED (DRIVE MODULE)Not Applicable for this subsystem
SMP3 CONTACT DISTURBANCE (DRIVE MODULE)Not Applicable for this subsystem
SMP2 SENSOR DISTURBANCE (EA04 MODULE- INPUT OPEN)Not Applicable for this subsystem
SMZ DRIVE MONITORING TIME EXCEEDED (DRIVE MODULE)Not Applicable for this subsystem
SMD1 DRIVE MODULE INPUT DISTURBANCE; DATA MISSINGNot Applicable for this subsystem
SMV INSERTION MONITORINGThis fault comes when any of the output module, Processingmodule or speed input module is kept out of its rack position.
SMS DRIVE MODULE SIMULATION AT FRONT PANELNot Applicable for this subsystem
SMT TEMPERATURE INADMISSIBLE (>60 DEG C)Action : Check for cabinet temperature and Fan racks. Fans
should be always running. Check for Fan supplies as per sheet no 12 & 18 of 28 in CUBICLE & RACK DIAGRAM DRG No. 3-656-00-01746 (NPC DRG. TAPP4/64110/5728/GA)
SME3 SYSTEM REDUNCY DISTURBANCE (70PR05, 70BV05,POWER SUPPLY)Action : Check that both Processors PR05 at location BA01 &
BA07 and Bus Traffic Directors at location BA35 & BA34 are healthy. For Details on Module Refer Procontrol module data sheets volume 1-6
SME2 MODULE DISTURBANCE (70PR05 & OUTPUT MODULES)Action : Check for modules at location BA01, BA07, BA20,
BA21, CA09, CA10, CA11, CA12, CA19, CA21, CA23, DA01, DA03, DA05, DA07, DA09, DA11, DA13, DA15, DA34, EA01, EA03, EA05, EA07, EA09, EA12, EA14, EA16, EA18, EA20, EA22, EA30, EA32 & EA34. The RED LED at module causing fault will be GLOWING. For Details on Module Refer Procontrol module datasheets volume 1-6.
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SME1 INPUT MODULE DISTURBANCEAction : Check for modules at location BA17, CA06, CA07,
CA08, CA13, CA17, CA29, CA31, CA33, CA35, DA17, DA18, DA19 & DA34. The RED LED at module causing fault will be GLOWING. For Details on Module Refer Procontrol module data sheets volume 1-6.
The alarms SME1, SME2, SME3 and BK02 LINE A / LINE B Faults are alsologged at MMI system for operator information. Operator shall inform MaintenanceEngineer on occurrence of these Faults.
Application specific module wise channel FAULT are listed in section 2.6 ofdocument Hardware Design Document for EHTC Doc No. TW/409/1068 (NPC Drg.No. TAPP4/64110/5873/DN).
PROCESS / HARDWARE HARDWARE ALARM ALARM
NO
YES
ALARM ON MMI
GO TO DIAGNOSTIC STATION
THE LOCAL BUS ADDRESSAND TYPE OF FAULT WILL
BE KNOWN
GOTO PANEL FOR THATLOCAL BUS
PARTICULAR MODULE RED LEDWILL BE GLOWING
HENCE, FAULT IN MODULE
SEE THEDISPLAY
FORFAULTS
CHECK FOR PROCESSVALUE AND DEVICE /
SENSOR OUTPUT
RECALIBRATE THEDEVICE IFREQUIRED
ALARM ONDIAGNOSTIC PRINTER
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5.0 Abbreviations used:
ADC : Analog to Digital ConversionTMR : Triple Modular redundantCOIS : Computerised Operator Information SystemDAC : Digital to Analog ConversionEPROM : Erasable Programmable Read Only MemoryFKB : Function Key BoardI/O : Input, outputMMI : Man Machine Interfacems : MillisecondEHTC : Electro-Hydraulic Turbine ControllerTSE : Turbine Stress Evaluator
ATRS : Automatic Turbine Run up System EHC : Electro hydraulic converter
MCR : Main Control Room OIC : Operator Interface Console SGPC : Steam Generator Pressure Controller OWS : Operator Work Station CSDV : Condenser Steam Dump Valve 1V2 : One out of Two 2V3 : Two out of Three
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edn-------------------------------------------------- POSITION CONTROLLER -------------------------------------------
edn
edn
edn
edn
edn
ednINPUTS
ednOUTPUTS
ednPROCESSING
edn+BA17
edn
edn+DA17
edn+CA17
edn+CA31
edn+CA33
edn+CA35
edn EI05
ednEI05
edn EI05
edn EA02
CH 1
CH 2
CH 4
edn EA02
CH 1
edn EA02
CH 1
CH 2
CH 4
ednSPEEDCh 1
ednSPEEDCh 2
ednSPEEDCh 3
edn
ednLOADCh 1
ednLOAD Ch 2
ednLOADCh 3
ednSGPC O/PCh 1
ednSGPC O/PCh 2
ednPRESSDEV Ch 1
ednPRESSDEV Ch 2
ednMID OF THREE SPEED
ednMID OF THREE LOAD
edn SGPC O/P MIN
ednPRESSDEVMAX
ednSPEED, LIFT& MIN PRESSCONTROLLERS
edn
CONTROLSELECTION
edn
edn
edn
edn
edn
edn
edn
edn
edn
edn
edn
edn
edn
ednS1.1 ONFOR MAX
ednS1.1 ONFOR MAX
edn-------------------- PROCONTROL P13 --------------------------
edn
ednFig 1 : Subsystem architecture EHTC
edn
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ednO & M INSTRUCTIONS & FAULT DIAGNOSTICS
ednFOR EHTC REV 00
ednBHEL DRG.NO. TW/409/1154 07/03
edn
edn
ednPlunger Coil OFF
ednPlunger Coil OFF
edn2V3
edn2V3
edn*
edn*
edn* POSITION CONTROLLER
ednHARDWARE
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edn
edn
ednTARAPUR ATOMIC POWER PROJECT-4 Page 20 of 24
ednO & M INSTRUCTIONS & FAULT DIAGNOSTICS
ednFOR EHTC REV 00
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edn
ednBHEL DRG.NO. TW/409/1154 07/03
ednFig 2 : SIGNAL FLOW OF SPEED
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TARAPUR ATOMIC POWER PROJECT-4 Page 21 of 24 O & M INSTRUCTIONS & FAULT DIAGNOSTICS FOR EHTC REV 00
BHEL DRG.NO. TW/409/1154 07/03
Fig 3: PLANT SCHEMATIC P501
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TARAPUR ATOMIC POWER PROJECT-4 Page 22 of 24 O & M INSTRUCTIONS & FAULT DIAGNOSTICS FOR EHTC REV 00
BHEL DRG.NO. TW/409/1154 07/03
Fig 4: PLANT SCHEMATIC P513
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TARAPUR ATOMIC POWER PROJECT-4 Page 23 of 24 O & M INSTRUCTIONS & FAULT DIAGNOSTICS FOR EHTC REV 00
BHEL DRG.NO. TW/409/1154 07/03
Fig 5: PLANT SCHEMATIC P542
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TARAPUR ATOMIC POWER PROJECT-4 Page 24 of 24 O & M INSTRUCTIONS & FAULT DIAGNOSTICS FOR EHTC REV 00
BHEL DRG.NO. TW/409/1154 07/03
Fig 6: PLANT SCHEMATIC P543
REV NO.(Name, designation & Date)File Name:REVISION CONTROL SHEET
ELECTRO-HYDRAULIC TURBINE CONTROLLERINDEX