ML20268A724

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5 to Updated Final Safety Analysis Report, Chapter 7, Drawing 495854, Rev. 2, Sheet 1, Functional Logic Diagram Feedwater Control & Isolation
ML20268A724
Person / Time
Site: Diablo Canyon  
Issue date: 06/30/2020
From:
Pacific Gas & Electric Co
To:
Office of Nuclear Reactor Regulation
Shared Package
ML20268B299 List: ... further results
References
DCL-20-075
Download: ML20268A724 (1)


Text

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REDUNDANT EWP LOOP 3 FEEDWATER BYPASS VALVE POSITION DEMAND SIGNAL LOOP 3 FEEDWATER MAIN VALVE POSITION DEMAND SIGNAL

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MODULATE MODULATE FEEDWATER FEEDWATER BYPASS VALVE 3 MAIN VALVE 3 FCV-1 530 FCV-530 (NOTE 3)

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WIDE RANGE LEVEL CHANNELS

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LOOP 4 FEEDWATER MAIN VALVE POSITION DEMAND SIGNAL

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MODULATE MODULATE FEEDWATER FEEDWATER BYPASS VALVE 4 MAIN VALVE 4 FCV - I 540 FCV-540

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7 REDUNDANT 8

NOTES I. ANALOG GATE CONSISTS OF 2 SOLENOID VENT VALVES IN SERIES TO REDUNDANTLY INTERLOCK THE AIR LINE BETWEEN EACH VALVE DIAPHRAM AND ITS ASSOCIATED POSITIONER. THE SOLENOID VALVES ARE DE-ENERGIZED TO)!_fNT, CAUSING THE MAIN FEEDWATER VALVE TO CLOSE IN \\Z._,)SECONDS.

2. ALL CIRCUITS IN THIS SHEET ARE NOT REDUNDANT EXCEPT WHERE INDICATED REDUNDUNT.
3. OPEN/SHUT INDICATION FOR EACH FEEDWATER CONTROL VALVE IN CONTROL ROOM.

9

4. SHEET NUMBERS REFER TO THE REFERENCE NUMBERS BELOW.
CHANNEL, ISOLATION MUST BE PROVIDED.
6. THIS DRAWING ILLUSTRATES THE FUNCTIONAL REQUIREMENTS OF THE REACTOR CONTROL AND PROTECTION SYSTEM. THIS DRAWING DOES NOT REPRESENT ACTUAL HARDWARE IMPLEMENTATlON. FOR HARDWARE IMPLEMENTATION, REFER TO THE APPL[CABLE SCHEMATIC.

10 REFERENCES~~

WE DWG PG&E DWG I. FUNCTIONAL LOGIC DIAGRAM [NOEX ANO SYMBOLS ____________________________________ 5653D74-I ______ 495841

2. FUNCTIONAL LOGIC DIAGRAM REACTOR TR[P SIGNALS _________________________________ 5653D74-2 ______ 495842
3. FUNCT[ONAL LOGIC DIAGRAM NUCLEAR INSTR ANO MANUAL TR[P SIGNALS __________________ 5653074-3 ______ 495843
4. FUNCTIONAL LOGIC DIAGRAM NUCLEAR [NSTR PERMISSIVES AND BLOCKS ___________________ 5653D74-4 ______ 495844
5. FUNCTIONAL LOGIC DIAGRAM PRIMARY COOLANT SYSTEM TRIP S[GNALS. ___________________ 5653D74-5 ______ 495845
6. FUNCT[ONAL LOGlC DIAGRAM PRESSUR[ZER TRIP SIGNALS. _____________________________ 5653074-6 ______ 495846
7. FUNCT[ONAL LOGIC DIAGRAM STEAM GENERATOR TRIP SIGNALS __________________________ 5653074-7 ______ 495847
8. FUNCT[ONAL LOGIC DIAGRAM SAFEGUARDS ACTUAT[ON SIGNALS _________________________ 5653074-8 ______ 495848
9. FUNCT[ONAL LOGIC DIAGRAM ROD CONTROLS ANO ROD BLOCKS ___________________________ 5653074-9 ______ 495849
10. FUNCTIONAL LOGIC DIAGRAM STEAM DUMP CONTROL ___________________________________ 5653074-10 _____ 495850 II. FUNCTIONAL LOGIC DIAGRAM PRESSURIZER PRESSURE ANO LEVEL CONTROL _________________ 5653074-11 _____ 495851
12. FUNCTIONAL LOGIC DIAGRAM PRESSURIZER HEATER CONTROL ___________________________ 5653074-12 _____ 495852
13. FUNCTIONAL LOGIC DIAGRAM FEEOWATER CONTROL AND ISOLATION _______________________ 5653074-13 _____ 495853
14. FUNCTIONAL LOGIC DIAGRAM FEEOWATER CONTROL ANO ISOLATION _______________________ 5653074-14 _____ 495854
15. FUNCTIONAL LOGIC DIAGRAM AUXILIARY FEEOWATER PUMPS STARTUP _____________________ 5653074-15 _____ 495855
16. FUNCTIONAL LOGIC DIAGRAM TURBINE TRIPS, RUNBACKS & SIGNALS ______________________ 5653074-16 _____ 495856
17. FUNCTIONAL LOGIC DIAGRAM AMSAC SIGNALS _______________________________________ 5653074-17 _____ 495857
18. FUNCT[ONAL LOGIC DIAGRAM SEISMIC TRIP ________________________________________ 8759077 ________ 495858
19. FUNCTIONAL LOGIC DIAGRAM DIGITAL FW CONT SYS INPUT SIGNAL VALIDATION ____________ 5653074-18 _____ 495859
20. FUNCT[ONAL LOGIC DIAGRAM DIGITAL FW CONT SYS FW FLOW CONTROLLER & Cy DEMAND ______ 5653D74-19 _____ 495860
21. FUNCT[ONAL LOGIC DIAGRAM DIG[TAL FW CONT SYS CONT VCV SEQ & TRACKING LOGIC _______ 5653074-20 _____ 495861
22. FUNCT[ONAL LOGIC DIAGRAM DIGITAL FW CONT SYS SIGNAL SELECTOR LOGIC _______________ 5653074-21 _____ 495862
23. DRAWING INDEX SOLID STATE PROTECTION SYS INTERCONNECT[ON & SCHEM. DIAGRAM-------- 108D442-I _____ 458826 DWG DWG TYPE SUBJECT DRAWINC HTLE UNIT No.

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JOHN W. HEFLER

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5IGNATl1"E CA REG NO.

EXP DATE NUCLEAR SAFETY RELATED KEY DWG--SECTION...l._

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BILL OF HATL NO.

DA TE DESCRIPTION GM/SPEC OWN CHKD SUPV APVD BY NO.

DATE R E V I S I O N S 4

5 2 /Ll/7/111 CHO,D. 5 TO 7 SECCl-lDS IN NOTE I PER FCT. 16177 I 91 SUPERSEDED DWG 663195*14; REV SCHEME, NOTES J &

4; ADDED NOTES 5 & 6 IDCl*EE-411501 DESCRIPTION GM/SPEC OWN CHKO SUPV APVD BY NO, DA.TE DESCRIPTION AKM OSGN WESTINGHOUSE EWP "M w-r.~:;-~-+.~-+----!D;;;'WN:;,";:W,". :.,Ai',LB"'OV;,il';;,IAS WAA VAL I I AKM BMG LCV GWSPEC OWN CHKO SUPV A.PVD BY CHKO V.A. LIM BMGOKIII R E V I S I O N S R E V I S I O N S DATE 5-23-91 SCALES NONE 6

7 FUNCTIONAL LOGIC DIAGRAM FEEDWATER CONTROL~ ISOLATION DIABLO CANYON DEPARTMENT OF ENG[NEERING PACIFIC GAS ANO ELECTRIC COMPANY SAN FRANCISCO, CALIFORNIA 9

DWG LI ST SUPSDS 663 I 95 - I 4 SUPSD BY SHEET NO.

SHEETS 495854 REV 2 I O U2 - 495884 E

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