ML20268A972

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5 to Updated Final Safety Analysis Report, Chapter 7, Drawing 495848, Rev. 10, Sheet 1, I & C Functional Logic Diagram Safeguards Actuation Signals
ML20268A972
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: ML20268A972 (1)
v • d • e


Text

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CHLORINE DETECTORS (SIMILAR TO UNIT I l RE25X RE26X ANSI 9AX ANS20AX MANUAL INITIATION LOOP I LOOP 2 LOOP 3 LOOP 4 FEEDWATER AUXILIARY STEAMLINE STEAMLINE STEAMLINE STEAMLINE EMERGENCY ISOLATION REACTOR FEEDWATER SAFETY EMERGENCY COOL! NG WATER SPRAY CONTAINMENT CONTAINMENT CONTAINMENT CONTROL ROOM 4NPG "I S lze STOP VALVE STOP VALVE STOP VALVE STOP VALVE NO:

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4 NOTES I.

TWO MOMENTARY SWITCHES;ACTUATION OF EITHER SWITCH WILL ACTUATE.

2.

TWO MOMENTARY PUSH BUTTONS, ACTUATION JS EFFECTED ONLY IF BOTH PUSH BUTTONS ARE PRESSED SUMULTANEOUSLY.

3.

ONE CONTROL SWITCH FOR EACH MAIN STEAM LINE STOP (TRAIN B SY ONLY! AND EACH BYPASS VALVE.

4.

CONTAINMENT PRESSURE BISTABLES FOR SPRAY ACTUATION ARE ENERGIZE-TO-ACTUATE <OTHER BISTABLES ARE DE-ENERGIZE TO-ACTUATE).

5.

ENCLOSED CIRCUITRY IS PART OF THE CONTROL ROOM VENT AND PRESSURIZATION (CRVPl SYSTEM.

6.

COMPONENTS ARE ALL INDIVIDUALLY SEALED IN (LATCHED) SO THAT LOSS OF THE ACTUATION SIGNAL WILL NOT CAUSE THESE COMPONENTS TO RETURN TO THE POSITION HELD PRIOR TO THE ADVENT OF THE ACTUATION SIGNAL.

7.

FEEDWATER ISOLATION INCLUDES THE TRIPPING OF ALL MAIN FEEDWATER PUMPS.

8.

COMPONENT COOLING WATER SYSTEM ISOLATION IS USED ONLY IF REQU[RED.

9.

THE REDUNDANT MANUAL RESET CONS!STS OF TWO MOMENTARY CONTROLS ON THE CONTROL BOARD, ONE FOR EACH TRAIN, IO. AUTOMATIC ACTUATION ALSO CLOSES THE BYPASS VALVE IN PARALLEL WITH THE ASSOCIATED MAIN STEAM LINE STOP VALVE, MANUAL CLOSURE OF EITHER VALVE REQUIRES SEPARATE MANUAL ACTION FOR THE OTHER ASSOCIATED VALVE.

I I. NUCLEAR STEAM SUPPLY SYSTEM SEQUENCE REQUIREMENTS SPECIFIED BY WESTINGHOUSE,

12. SHEET NUMBERS REFER TO THE REFERENCE NUMBERS BELOW.
13. WHENEVER A PROCESS SIGNAL IS USED FOR CONTROL AND DERIVED FROM A PROTECTION CHANNEL, ISOLATION MUST BE PROVIDED.
14. THIS ILLUSTRATES THE FUNCTIONAL REQUIREMENTS OF THE REACTOR CONTROL AND PROTECTION SYSTEM.

THIS DRAWING DOES NOT REPRESENT ACTUAL HARDWARE IMPLEMENTATION.

FOR HARDWARE IMPLEMENTATION, REFER TO APPLICABLE SCHEMATIC.

DIESEL C SHEET I 3 l TRIP PUMPS INJECTION FAN COOLERS I PUMP START ~

START-UP (SHEET 2l (NOTE I I l SYSTEM !SOL.)

(NOTE 7)

(SHEET 15)

(NOTE 8)

(NOTE 6l (NOTE 6l (NOTE 6l

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(NOTE 61 REFERENCES WE DWG PG~E DWG I. FUNCTIONAL LOGIC DIAGRAM INDEX AND SYMBOLS ___________________________________ 5653D74-l ______ 495841

2. FUNCTIONAL LOGIC DIAGRAM REACTOR TRIP SIGNALS _________________________________ 5653D74-2 ______ 495842
3. FUNCTIONAL LOGIC DIAGRAM NUCLEAR INSTR AND MANUAL TRIP SIGNALS _________________ 5653D74-3 ______ 495843
4. FUNCTIONAL LOGIC DIAGRAM NUCLEAR INSTR PERMISSIVES AND BLOCKS __________________ 5653D74-4 ______ 495844
5. FUNCTIONAL LOGIC DIAGRAM PRIMARY COOLANT SYSTEM TRIP SIGNALS ___________________ 5653074-5 ______ 495845
6. FUNCTIONAL LOGIC DIAGRAM PRESSURIZER TRIP SIGNALS _____________________________ 5653074-6 ______ 495846
7. FUNCTIONAL LOGIC DIAGRAM STEAM GENERATOR TRIP SIGNALS __________________________ 5653D74-7 ______ 495847
8. FUNCTIONAL LOGIC DIAGRAM SAFEGUARDS ACTUATION SIGNALS _________________________ 5653D74-8 ______ 495848
9. FUNCTIONAL LOGIC DIAGRAM ROD CONTROLS AND ROD BLOCKS ___________________________ 5653D74-9 ______ 495849
10. FUNCTIONAL LOGIC DIAGRAM STEAM DUMP CONTROL..... ______________________________ 5653D74-I0 _____ 495s50 I I. FUNCTIONAL LOGIC DIAGRAM PRESSURIZER PRESSURE AND LEVEL CONTROL ________________ 5653D74-I I _____ 495851
12. FUNCTIONAL LOGIC DIAGRAM PRESSURIZER HEATER CONTROL ___________________________ 5653D74-12 _____ 495852
13. FUNCTIONAL LOG[C DIAGRAM FEEO\\IATER CONTROL AND ISOLATION _______________________ 5653074-13 _____ 495853
14. FUNCTIONAL LOGIC DIAGRAM FEEDWATER CONTROL AND ISOLATION _______________________ 5653074-14 _____ 495854 15, FUNCTIONAL LOGIC DIAGRAM AUXILIARY FEEDWATER PUMPS STARTUP _____________________ 5653D74-15 _____ 495855
16. FUNCTIONAL LOGIC DIAGRAM TURBINE TRIPS, RUNBACKS & SIGNALS ______________________ 5653074-16 _____ 495856
17. FUNCTIONAL LOG[C DIAGRAM AMSAC SIGNALS _______________________________________ 5653074-17 _____ 495857
18. FUNCTIONAL LOGIC DIAGRAM SEISMIC TRJP ________________________________________ 8759D77 ________ 495858
19. FUNCTIONAL LOGIC DIAGRAM DIGITAL FIi CONT SYS INPUT SIGNAL VALIDATION ____________ 5653074-18 _____ 495859
20. FUNCTIONAL LOGIC DIAGRAM DIGITAL FW CONT SYS FW FLO\\/ CONTROLLER & Cv DEMAND ______ 5653074-l9 _____ 495B60
21. FUNCTIONAL LOGIC DIAGRAM DIGITAL FW CONT SYS CONT VCV SEQ & TRACKING LOGIC _______ 5653D74-20 _____ 495861
22. FUNCTIONAL LOGIC DIAGRAM OIG[TAL FW CONT SYS SIGNAL SELECTOR LOGIC ______________ 5653074-21 _____ 495862
23. DRAWING INDEX SOLID STATE PROTECTION SYS INTERCONNECTION & SCHEM. DIAGRAM ________ I 080442-1 _____ 458862 ACTUATION (NOTE 61 ISOLATION ISOLATION PHASE A PHASE B (NOTE 6)

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DATE

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REVISION DESCRIPTION 08-20-2019

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Rev;sed Per DFT-7*4940 D. D.

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N/A VENTILATION INTAKE DUCT ISOLATION ISOLATION

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I & C FUNCTIONAL LOGIC DIAGRAM SAFEGUARDS ACTUATION SIGNALS DIABLO CANYON POWER PLANT PACIFIC GAS AND ELECTRIC COMPANY SAN FRANCISCO, CALIFORNIA DWG SCALE:

BILL OF MATL:

SUPSDS:

663195-8 SUPSD BY:

DRAWING SHEET 495848 PAGE REV 0

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