ML20268A763

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5 to Updated Final Safety Analysis Report, Chapter 7, Drawing 495872, Sheet 1, Rev. 2, Functional Logic Diagram Reactor Trip Signals
ML20268A763
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: ML20268A763 (1)
v • d • e


Text

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A 2l896l7 SEISMIC TRIP SIGNAL (SHEET 18)

MANUAL TRIP SIGNAL {SHEET 3l NEUTRON FLUX TRIP SIGNALS

( SHEET 3 l PRIMARY COOLANT SYSTEM TRIP SIGNALS {SHEET 5l PRESSURIZER TRIP SIGNALS (SHEET 6l STEAM GENERATOR TRIP SIGNALS (SHEET 7l SAFETY INJECTION SIGNAL (SHEET 8l TURBINE TRIP SIGNAL (SHEET 16)

MANUAL TRIP SIGNAL (SHEET 3l NEUTRON FLUX TRIP SIGNALS

( SHEET 3 l PRIMARY COOLANT SYSTEM TRIP SIGNALS (SHEET 5l PRESSURIZER TRIP SIGNALS (SHEET 6l STEAM GENERATOR TRIP SIGNALS

( SHEET 7 l SAFETY INJECTION SIGNAL (SHEET 8l TURBINE TRIP SIGNAL (SHEET 16l SEISMIC TRIP SIGNAL (SHEET 18l

[220, I 301495872. E62 I I -08 9 I I I : 0 I VNM N4l!il 2

3 TRAIN A REACTOR SHUNT TRIP SIGNALS MANUAL REACTOR TRIP SIGNAL {SHEET 3l -------iv MANUAL SAFETY INJECTION SIGNAL {SHEET 8l-----i1,.._/_/

LOGIC TRAIN A REACTOR TRIP SIGNALS

/SOURCE RANGE, HIGH FLUX ( INTERLOCKED BY P-6 & P-10-------------------------pt INTERMEDIATE RANGE, HIGH FLUX ( INTERLOCKED BY P-IOl ---------------------------i HIGH FLUX, LOW SETPOINT ( INTERLOCKED BY P-IOl ------------------------1 POWER RANGE HI CH FLUX, H [CH SETPO INT--------------------------------i

, H [ GH FLUX RATE --------------------------------------i

/OVERTEMPERATURE 6 T -------------------------------------------1 OVERPOWER 6 T -------------------------------------------1 FLOW IN ANY I OF 4 LOOPS ( INTERLOCKED BY P-8)---------------------i

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3i LOGIC TRAIN B REACTOR TRIP SIGNALS

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AUTOMATIC SI GNAL--------------------------------------------i LOW AUTO STOP OIL PRESSURE OR ALL STOP VALVES CLOSED ( INTERLOCKED BY P-9)-----------------i TRAIN B REACTOR SHUNT TRIP SIGNALS MANUAL REACTOR TRIP SIGNAL (SHEET 3)-------1, MANUAL SAFETY INJECTION SIGNAL (SHEET 8)---,-r,_

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REACTOR TRIP SIGNAL

.------FOR TURBINE TRIP (SHEET 16l 1-(L TO STEAM DUMP

~-- LOGIC (SHEET IOl TO STEAM DUMP r--- LOGIC (SHEET IOl 0::

REACTOR TRIP SIGNAL

.------FOR TURBINE TRIP (SHEET 16l I-

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LOGIC TRAIN B NOTES I. TRIPPING EITHER REACTOR TRIP BREAKER 52/RTA OR 52/RTB REDUNDANTLY DE-ENERGIZES THE ROD DRIVES. ALL FULL LENGTH CONTROL RODS AND SHUTDOWN RODS ARE THEREBY RELEASED FOR GRAVITY INSERTION INTO THE REACTOR CORE.

2. NORMAL REACTOR OPERATION IS TO BE WITH REACTOR TRIP BREAKERS 52/RTA AND 52/RTB IN SERVICE AND BYPASS BREAKERS 52/BYA AND 52/BYB WITHDRAWN.

DURING TEST, ONE BYPASS BREAKER IS TO BE PUT IN SERVICE AND THEN THE RESPECTIVE REACTOR TRIP BREAKER IS OPERATED USING A SIMULATED REACTOR TRIP SIGNAL IN THE TRAIN UNDER TEST. THE REACTOR WILL NOT BE TRIPPED BY THE SIMULATED SIGNAL SINCE THE BYPASS BREAKER IS CONTROLLED FROM THE OTHER TRAIN. ONLY ONE REACTOR TRIP BREAKER IS TO BE TESTED AT A TIME.

3. ALL CIRCUITS ON THIS SHEET ARE NOT REDUNDANT BECAUSE BOTH TRAINS ARE SHOWN.
4. OPEN/CLOSED INDICATION FOR EACH TRIP BREAKER AND EACH BYPASS BREAKER IN CONTROL ROOM.
5. SHEET NUMBERS REFER TO THE REFERENCE NUMBERS BELOW.
6. WHENEVER A PROCESS SIGNAL IS USED FOR CONTROL AND IS DERIVED FROM A PROTECTION CHANNEL, ISOLATION MUST BE PROVIDED.
7. THIS DRAWING ILLUSTRATES THE FUNCTIONAL REQUIREMENTS OF THE REACTOR CONTROL AND PROTECTION SYSTEM. THIS DRAWING DOES NOT REPRESENT ACTUAL HARDWARE IMPLEMENTATION. FOR HARDWARE IMPLEMENTATION, REFER TO THE APPLICABLE SCHEMATIC D [AGRAM( S l.

REFERENCES WE DWG PG&E DWG I. FUNCTIONAL LOGIC DIAGRAM INDEX AND SYMBOLS ____________________________________ 5653D74-I ______ 495871

2. FUNCTIONAL LOGIC DIAGRAM REACTOR TRIP SIGNALS _________________________________ 5653D74-2 ______ 495872
3. FUNCTIONAL LOGIC DIAGRAM NUCLEAR INSTR AND MANUAL TRIP SIGNALS __________________ 5653074-3 ______ 495873
4. FUNCTIONAL LOGIC DIAGRAM NUCLEAR INSTR PERMISSIVES ANO BLOCKS ___________________ 5653074-4 ______ 495874
5. FUNCTIONAL LOGIC DIAGRAM PRIMARY COOLANT SYSTEM TRIP SIGNALS ____________________ 5653074-5 ______ 495875
6. FUNCTIONAL LOGIC DIAGRAM PRESSURIZER TRIP SIGNALS ______________________________ 5653074-6 ______ 495876
7. FUNCTIONAL LOGIC DIAGRAM STEAM GENERATOR TRIP SIGNALS __________________________ 5653074-7 ______ 495877
8. FUNCTIONAL LOGIC DIAGRAM SAFEGUARDS ACTUATION SIGNALS _________________________ 5653074-8 ______ 495878
9. FUNCTIONAL LOGIC DIAGRAM ROD CONTROLS AND ROD BLOCKS ___________________________ 5653074-9 ______ 495879
10. FUNCTIONAL LOGIC DIAGRAM STEAM DUMP CONTROL ___________________________________ 5653074-10 _____ 495880
11. FUNCTIONAL LOGIC DIAGRAM PRESSURIZER PRESSURE AND LEVEL CONTROL _________________ 5653074-1 I _____ 495881
12. FUNCTIONAL LOGIC DIAGRAM PRESSURIZER HEATER CONTROL ___________________________ 5653D74-12 _____ 495882
13. FUNCTIONAL LOGIC DIAGRAM FEEDWATER CONTROL AND ISOLATION _______________________ 5653D74-13 _____ 495883
14. FUNCTIONAL LOGIC DIAGRAM FEEDWATER CONTROL AND ISOLATION _______________________ 5653074-14 _____ 495884
15. FUNCTIONAL LOGIC DIAGRAM AUXILIARY FEEDWATER PUMPS STARTUP _____________________ 5653074-15 _____ 495885
16. FUNCTIONAL LOGIC DIAGRAM TURBINE TRIPS, RUNBACKS & SIGNALS ______________________ 5653074-16 _____ 495886
17. FUNCTIONAL LOGIC DIAGRAM AMSAC SIGNALS _______________________________________ 5653D74-17 _____ 495887
18. FUNCTIONAL LOGIC DIAGRAM SEISMIC TRIP. ________________________________________ 8759077 ________ 495888
19. FUNCTIONAL LOGIC DIAGRAM DIGITAL FW CONT SYS INPUT SIGNAL VALIDATION ____________ 5653074-18 _____ 495889
20. FUNCTIONAL LOGIC DIAGRAM DIGITAL FW CONT SYS FW FLOW CONTROLLER & Cv DEMAND ______ 5653074-19 _____ 495900
21. FUNCTIONAL LOGIC DIAGRAM DIGITAL FW CONT SYS CONT VCV SEQ & TRACKING LOGIC _______ 5653074-20 _____ 495901
22. FUNCTIONAL LOGIC DIAGRAM DIGITAL FW CONT SYS SIGNAL SELECTOR LOGIC ______________,5653074-21 _____ 495902
23. FUNCTION DIAGRAM REACTOR - TURBINE - GENERATOR PROTECTION

__________________________ 500800

24. SCHEMATIC DIAGRAM REACTOR TRIP BREAKERS

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SIGNiln RE CA REG.NO.

EXP.DATE NUCLEAR SAFETY RELATED 169972 WAA I 3-13-90 SUPERSEDES WG 663195 2 !UNITS IS.2) 169972 WAA VAL JC FOR UN IT 2; ADD STEAM DUMP LOGIC, REV LCV SHUNT TRIP SIGNALS

( CZ-EE-42370-RI l; REV P-7 TOP 9 COC2 EE-38862)

KEY DWG--SECTION _l___

APPROVE GH 169972 BY SUPV J. CUENCO SLW TFF S.l.WONG OSGN V,A,LIM KAW OWN W,ALBOVIAS CHKD L. C, VEGA OK I

UNIT 2 FUNCTIONAL LOGIC DIAGRAM REACTOR TRIP SIGNALS DIABLO CANYON COAST VALLEYS DIVISION MICROFILM Bill OF HA.TL DWG LIST SUPSDS 663 I 95 -2 SUPSD BY SHEET NO.

SHEETS NO.

DATE DESCRIPTION GM/SPEC OWN CHKD SUPV APVD BY NO, DATE DESCRIPTION GH/SPEC OWN CHKD SUPV APVD BY NO.

DA TE DESCRIPTION GM/SPEC OWN CHKD SUPV APVD BY K,A,WITZ DATE 3-13-90 DEPARTMENT OF ENG[NEERING PACIFIC GAS AND ELECTRIC COMPANY SAN FRANCISCO, CALIFORNIA 495872 REV R E V I S I O N S R E V I S I O N S R E V I S I O N S SCALES NONE 2

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