ML23241A370

7 to Updated Final Safety Analysis Report, Figure 7.2-1, Drawing 495848, Rev. 10, Sheet 1, I & C Functional Logic Diagram Safeguards Actuation Signals

ML23241A370
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: DCL-23-044, 7 to Updated Final Safety Analysis Report, Chapter 9, Figure 9.4-10, Drawing 512904, Revision 15, Mechanical Air Monitoring Technical Support Center and Post-Accident Sampling System Air Flow Diagrams ML23241A053 ML23241A054 ML23241A055 ML23241A056 ML23241A057 ML23241A058 ML23241A059 ML23241A060 ML23241A061 ML23241A062 ML23241A063 ML23241A064 ML23241A065 ML23241A066 ML23241A067 ML23241A068 ML23241A069 ML23241A070 ML23241A071 ML23241A072 ML23241A073 ML23241A074 ML23241A075 ML23241A076 ML23241A077 ML23241A078 ML23241A079 ML23241A080 ML23241A081 ML23241A082 ML23241A083 ML23241A084 ML23241A085 ML23241A086 ML23241A087 ML23241A088 ML23241A089 ML23241A090 ML23241A091 ML23241A092 ML23241A093 ML23241A094 ML23241A095 ML23241A096 ML23241A097 ML23241A098 ML23241A099 ML23241A100 ML23241A101 ... further results
References
DCL-23-044
Download: ML23241A370 (1)

Text

CONTAINMENT PRESSURE STEAM GENERA TOR PRESSURIZER I CONTAINMENT PURGE RADIATION DETECTORS CH LOR I NE DETECTORS UN IT 2 RADIATION~

MANUAL INITIATION EXHAUST LO, LOW CHLORINE HIGH STEAM PRESSURE RATE STEAML!NE PRESSURIZER DETECTORS (REF7) PRESSURE PRESSURE I SIMILAR TO (REF7l (SHEET6) UNIT 11 REZSX RE26X ANSl9AX ANS20 AX (N0TE4) 2/~ HI-HI _ _ _ _ _ _ _ _ _ _ __

I MANUAL ACTUATION FROM CONTROL BOARD I STEAMLINE ISOLATION I ~

I MANUAL RESET ANO BLOCK

!NOTE 9)

TO I 1- 2 MI N.

2TD I MANUA L SW IT CH 1.5 - 15 (SSPSl SEC.

CLOSE STEAM GEN 8LOW00WN

]SOL VALVES I

11.C.>

s:::NOTE 5 L___

REFERENCE S NOTES I. FUNCTIONA L LOGIC O!AGRAH INOH ANOSYHBOLS __ _ ________ __ _____ _______ 5653D1 -I ___ _ _ 495841 I. TWO MOMENTARY SWITCHES;ACTUATION OF EITHER SWITCH 2, FUNCTIONA L LOGICOIAGRAMREACTORTRIPS!GNALS *** - --- --------------- - -------- -- 565307 -2_ _____ 495842 Wi ll ACTUATE. 3, FUNCTIONAL LOG IC DIAGRAM NUCLEAR INSTR ANOHANUAL TRIP SIGNALS _________________ 565307 -3 ______ 495843

2. TWO MOMENTARY PUSH BUTTONS , ACTUATION IS EFFECTED 4 . FUNCTIONA LLOGICOI AGRAMNUCLEARI NS TRPERMISSIVESANOBLOCkS __________________ 5653D7 ------ 95844 ONLY IF BOTH PUSH BUTTONS A.RE PRESSED SU'4.JLTANEOUSLY, S.FUNCT!ON.lLLOG!CDJAGRAMPRIMARYCOOlANTSYSTEMTRIPSJCNALS ___________________ 565307 -S-----495845

3. ONE CON TROL SWI TCH FOR EACH MAIN STEAM LlNE STOP 6. fUNCT!ONALLOCICDIAGRAMPRESSURIZERTRIPSIGNALS ____ _________ __ __ ___ _ _ _ ____ 5653074 - 6 ____ 495846

( TRA IN B SV ONLYJ ANO EACH BYPASS VA LVE.

7 . FUNCTIONALLOCICOIAGRAMSTEAMCENERHORTRIPSlCNALS. _________________________ 56s3074-7_ _____ 495e47

4. CONTAHlMENT PRESSURE BISTABLE$ FOR SPRAY ACTUATION 8. FUNCTIONAL LOCICDIAGRAMSAFEGUAROSACTUHIOH SIGNALS _______________ _____ ____ 5653074 - 8 ______ 495848 ARE EN[RC12E-T0-ACTUATE COTHER BISTABLES ARE OE - EJIERGJZE TO-ACTUATE) . 9.FUNCT!ONALL0ClCO[AGRAMR00CONTAOLSANDROOBLOCKS .* _________________________ 565J074-9 ______ 495849 S. ENCLOSED CIRCUITRY IS PART OF THE CONTROL ROOM VENT 10, FUNCTION.AL LOGIC DIACRAMSTEAMOOH'CONTRO L ____ _______________________ _ _______ s6S3D7 -10 _____ 495eso AND PRESSURIZAT ION <CR\/P) SYS TEM. 11. FUNCTIONA L LOGIC OIAGRAH PRESSURIZER PRESSURE ANO LEVEL CONTROL ___ ----------~--5653D7 -I I _____ 49585 1

6. COMPONENTS ARE ALL INO!VJOUALLY SEALED IN (LATCHEDl SO 12 . FUNCTIONAL LOC.IC D [AGRAM PRESSURIZER HU..TER CONTROL . __________________________ 5653D7~

• I 2 _____ 495852 THAT LOSS OF THE ACTUATION SIGNA L WI LL NOT CAUSE THESE COMPONENTS TO RETURN TO THE POSITION HELO PRIOR TO THE 13 . fUMCT!ONALLOG ICD!AGAAMFEEOll4TEACONTROL AHD ISOLATION __ __ ____ $653D74- I L __ __ 495e53 ADVENT OF THE ACTUATION SIGNAL. 14 . FUNCTIONA L LOGIC DIAGRAM FEEOWHER CONTROL AND ISOL ATION , ___________ _ _ _________ 5653D7 - 1 4 _____ 495954 7, FEEOWATER ISOLATION INCLUDES THE TRIPPING OF ALL 1-\AlN 15.FUNCTIONALLOG IC DIAGRAHAUXILIARYFEEOWATERPUH'SSTARTUP ____________ ___ ____ $653D7 -15 _____ 495955 FEEOWA TERPUMf'S . 16. fUNCTIONALLOGICO!AGAAMTURBINETRIPS, AUNBACkS~SIGt,/,1,LS _____________________ 5653074 ____ 495856

8. COMPONENT COOLING WATER SYSTEM ISOL ATIO N IS USED ONLY 17 . FUNCTIONAL LOGIC DIAGRAM AHSAC SIGNALS _______________________________________ $653D74-l7 _____ 495957 IFREOUJREO . 18.FUNCTIONALLOGIC0!AGRAMSEISMICTRIP ________________________________________ 8759071 _______ , 495858

9. THE REDUNDANT MANUAL RESET CONSISTS OF TWO MOMENTARY CONTROLS ON THE CONTROL SOARD, ONE FOR EACH TRAIN . 19 . FUNCTIONAL LOG IC DIAGRAM OIGlhL FW CONT SYS INPUT SIGNAL VALIDATION ____________ 5653D7~-18 _____ 495859 10 . AUTOMATIC ACTUATION ALSO CLOSES THE BYPASS VALVE 20. FUNCTIONAL LOGIC DIAGRAM OIGlh L FW CONT SYS FW FLOW CONTROLLER~ Cv OEMAHD _____ _ S653D74 *1 9- ____ 495960 IN PARALLEL W17H THE ASSOCIATED MAIN STEAM LINE STOP 21, FUNCTIONAL LOGIC DIAGRAM DIGITAL FW CONT SYS CONT \/CV SEO Ir TRACKING LOC.IC _______ 56530H-20 _____ 495961 VALVE. MANUAL CLOSURE OF EITHER \/AL\/E REQUIRES SEPARATE 22. FUNCT IONAL LOGIC D!AGRAMDIG[UL FWCONT SYS SIGNAL SELECTOR LOGl( ______________ 5653D74-21 _____ 495862 MANUAL ACTION FOR THE OTHER ASSOCIATED VALVE.

11 . NUCLEAR STEAM SUPPLY SYSTEM SEQUENCE REQUIREMENTS SPECIFIED BY WESTINGHOUSE .

23. DRAWING INDEXSOUDSHTEPROTECTIONSYS JNTEA:CONNECT IONlrSCHEM. D!AGRAM _______ ,1080442-1_ ____ 458862 NUCLEAR SAFETY RELATED 12 . SHEET NUMBERS REFER TO THE REFERENCE NUMBERS BELOW .

13. WHENEVER A PROCESS SIGNAL JS USED FOR CONTROL AND DERIVED FRO M A PROTECTION CHANNEL, ISO LA TION MUST SE PROVIOEO .

KEY DWG. SECTI0N _ 3 _

14. THIS ILLUSTRATES THE FUNCTIO NAL REQUIREMENTS OF THE UNIT I REAC TOR CONTROL ANO PROTECTION SYSTEM. THIS DRA WING DOES NOT REPRESENT ACTUAL HARD WARE IMPLEMENTATION.

FOR HARDWARE IMP L EMENTATION, REFER TO APPLICABLE SCHEMATIC.

FUNCTIONAL L OGIC DIAGRAM SAFEG UARDS ACTUATION SIGNALS 4958 48 I0