ML23241A250

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7 to Updated Final Safety Analysis Report, Chapter 7, Figure 7.2-1, Drawing 495850, Revision 3, Sheet 1, Electrical Functional Diagram Steam Dump Control
ML23241A250
Person / Time
Site: Diablo Canyon  
Issue date: 05/25/2023
From:
Pacific Gas & Electric Co
To:
Office of Nuclear Reactor Regulation
Shared Package
ML23241A052 List: ... further results
References
DCL-23-044
Download: ML23241A250 (1)
v • d • e


Text

8L0Cl SIM DUl4' I 4 COOLOO.... COMDEMSER L

DUI-FVH¥ES l

,c,-,,,.,.'

TURBINE IMPULSE CHAMBER PRESSURE c:d/@'b_*:.*

__ ~m:t SELECT CONDENSER AVAILABLE SIGNALS REACro-R4 TRIP i TR1AStM((\i:i~\M i

AUCT I O~EERED T AYG ISHEE1Tll l REFERENCE T AVG INTERNAL SETPOINT

" A" "8'

I 1

  • ------0*---------------~ -----*

t =~~~ r

,----f'a,',i-;;;;h-,

STEAM DUMP CONTROL NODE SELECTOR SW E

' -----------'--------f-------------------- --------

t I

STEAH HEADER PRES;3URE l<lOULATE THELOCF I All<lVH(~IC

~ELIEF HL~E PCV-11 STEAM LINE PRESSURE

~ODULATE THE LOO~ Z All<lVH[ ~IC

~El IEF VALVE

~n-20 1-00ULATE TMELOOP3 ATM:JSPMERIC RELIEF VALVE PCV -21 l<lOULATE TM[ LOO~

~

A 111)Sl"Ml~ I C

~ELIEF HL~E 1>cv-n 8L0Cl SHI DU"" JALL COIID[MSE~ DUl4' YAL\'[S DCEn THE4COOLDOlill 01.J,FVALVES J TAIPCf'[II Ul<ISPH[RIC DU.PVHVES:

  • ~,:dff~tcf~L~~F l.:;c-c--twti~,'-';,'--~~~------1 NOTES nV-49, ~o. ~I, ~l. ~3,

~4, *" L &7

~CV-i,, lO, 2 1, 22 2, CIRCUITRY ON TH IS SHEET !SNOT REDUNDANT EXCEPT WHERE INDICATED REDUNDANT.

3, SELECTOR SWITCH WITH THE FOLLOWING3POSITIONS:

ON STEAM DU~ IS PERMITTED BYPASS -

TAVG INTERLOCK ISBYPASSEDFORLO-LOT AVG.

SPRING RETURN TO

" ON" POSITION.

OFF" -STEAM DUMP !SNOTPERMJ TT EDANDRESET T AVGBYPASS.

THE Rrnui.o,o,n INTERLOCK SELECTOR SWITCH CONSISTS OF TWO CONTROLS m, THE coi.TROL BOARD, ONE FOR EACH TRA I N.

.------------~~-~

C TH IS MEDIA'-

SIGi.AL SELECT Ai.D T-REFEREi.CE IS DERIHD FROM SOf"T'ol'.,l,..RE FLtiCTI(loj BLOC~$ Ii. PCS SE T 1. MEDIAN SJGMAL SELECT,1,i.D T-REFEROiCE FCfl ROO C(lojTf!O._ <RU.

JS DERIVED FROM SOFT I/ARE Fui.cr roi. f!LOC~S Ii. PCS SE T 1 v. THJS P1'i'OV I ocs,1, F.1.UL T TOLERAN T SYSTEM FOR SINGLE Ii.PU T FAILURES.

5.

THE RELIEF VALVESSTARTMODULATINGOPENATPOINTWHEREALLDUMPVALVES SHOULD BE FULLY OPEN.

6. HIE REOUi.DAN T LOGIC OUTPUT OPERATES 2 SOLEi.OJO VAL'fES Ji. SERIES IM THE A!R LINE BEHIE[N TH[ HAI'-

AIR SUPPLY A'-0 EACH RELI EF VALVE DIAPHRAGM. TH[

SOLENOID VALVES ARE DE-E'-ERGJZED TO CLOSE. IIHICH REDUNDANTLY STOPS TH[ TRIP OPENFUMCTION.

7.

THE CONDENSER AVAILABLE SIGNAL LOGIC IS TYPICAL. ACTUAL I MPLEHENTATION MA Y BE DI FFERENT.

8.

THE REDUNDANT TAVG INTERLOCK CONSIST OF 2CONTACTS IN SERIES TO REOUNDANTLYSTOPTH!STRANSFERSIGNAL.

9. LIGHTS SHOULD BE PROVIDED IN THE CONTROL ROOMFOREACHOUMPVALVETO JNOICATE\o'HENTHEVALVE !SFULLYCLOSEDOR FULLYOPEN.
10. TH[STEAHLl'-EPR[SSUR[SJGNALORIGI'-HUSTeEOIFF[R[NTFROMTHATWHJCH IS USED FOR ST[AHL!N[ DIFFERENTIAL PRESSURE SAF[TT l'-JECTJON SIGNAL SHO\<<N oi. SHEET 7 TO MEET TH[ SJ'-OLE FAILURE CRITER!OM.

II. SHEET NUMBERS REFER TO THE REFERENCE NU~ERS BELO\</.

12. \,/l-lENEVERAPROCESSSIGNAL ISUSEO FORCONTROLAND ISDER IVEDFROMAPROTECTION
CHANNEL, ISOLAT ION MUST BE PROVIDED.

13.

TH I S ORAi/ING I LLUSTRATES THE rni.cTJoi.,1,L REQU I REMENTS OF THE REACTOR CONTROL AHO ~ROTECTIOi. srSTEM. THIS DRA\/Ii.o DOES NOT REPRESEi.T ACTUAL HARDI/ARE IMPLEMEi.TATIOi.. FOR HARDI/ARE IMPLEMEi.TATIOi., REFER TO THE APPLJCAeLE SCHEMATICDIAGRAHIS J.

REFERE NCES FUNCT!ONAL LOGIC DIAGRAM JNOEX ANO SY~OLS FUNCT!ONALLOGICOIAGRAMREACTORTRIPSIGNALS WE DWG PG&E DWG

_5653074-1

____ 49584 I 5653074-2.

495842

3. FUNCTIONALLOGICDIAGRAMhUCLEARINSTRANOMANUALTRIPSIGNALS_

__5653074-3 ____ 495843

4. FUNCTTONAL LOGIC DIAGRAM hUCLEAR INSTR PERMTSSIVES ANO BLOC KS............................. 5653074-4.

495844

5. FUNCTIONALLOGICDIAGRAMPRIMARY COOLANTSYSTEMTRIPSIGNALS 5653074 - 5
6. FUNCT!ONAL LOGIC DIAGRAM PRESSURIZER TRIP SJGNALS 5653074 -6 ____ 495646
7. FUNCTIONALLOGICDIAGRAMSTEAMGENERATORTRIPSIGNALS 5653074 - 7
8. FUNCllONAL LOGIC DIAGRAM SAFEGUARDS ACTUATION SIGNALS

_5653074-8 ____ 495848

9. FUN CT ION AL LOG IC DI AGRAM ROD CONTROLS ANO ROD BLOCKS 5653074-9 ____ 495949
10. FUNCT!ONAL LOGIC DIAGRAM STEAM OUl-1' CONTROL __

_5653074-10 __ 495850 11. FUNCTlONALLOGICOIAGRAMPRESSURIZERPRESSUlEANOL EVELCONTROL

. 5653074-11 495851

12. FUNCTTONAL LOGIC DIAGRAM PRESSURIZER MEATER cmHROL

.5653074-12.

495852

13. FUIKTIONAL LOGIC DIAGRAM FEEDw'ATER CONTROL A'W ISOLATlmJ 5653074 - 13 495853
14. FUNCTIONHLOGICOIAGRAMFEEDw'ATERCONTROLANDISOLHION

_5653074-14_

495854

15. FUNCTIONAL LOGIC DIAGRAM AUXILIARY FEEDWATER PUff'S STARTLE'

_5653074 - 15_

16. FUNCT!ONAL LOGIC DIAGRAM TURBINE TRIPS, RUNBACKS !.. SIGNALS 5653074 -16 495856
17. FUNCTIONAL LOGIC DIAGRAM AMSAC SIGNALS 5653074-17
18. FUNCT!ONAL LOGIC DIAGRAM SEISMIC TRIP

_8759077

_____ 495858

19. FUNCT!ONAL LOGIC OIAGRAMOJGITAL FWCCtlT SYS INPUT SIGNAL VALIDATION 5653074-18 495859
20. FUNCTIONAL LOGIC DIAGRAM DIG ITAL Fl<,' CCtlT SYS Fl<,' FLOw' cmHROLLER & Cv DEMAND 5653074-19 495860
21. FUNCTTONAL LOGIC DIAGRAM DIGITAL Fw' CCtlT SYS coin vcv SEO & TRACKING LOGIC...... 5653074 -20.

49586 1

22. FUNCTIONAL LOGIC DIAGRAM DIG ITAL Fl<,' CONT SYS SIGNAL SELECTOR LOGIC ___________ 5653074 -21 495862
23. FUNCTION DIAGRAM REACTOR-TURBINE-GENERATOR PROTECTION 500825 24. SCHEMATIC DIAGRAM STEAM DUMP SOLENOID VALVES ____________

KEY DWG. SECTI0N_3 _

NUCLEAR SAFETY RELAT ED UNIT I FUNCTIONAL DIAGRAM STEAM DUMP CONTROL

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