ML24323A251
| ML24323A251 | |
| Person / Time | |
|---|---|
| Site: | Diablo Canyon  |
| Issue date: | 11/18/2024 |
| From: | Pacific Gas & Electric Co |
| To: | Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML24323A239 | List: |
| References | |
| DCL-24-105 | |
| Download: ML24323A251 (1) | |
Text
NUCLEAR SAFETY RELATED KEY DWG. SECTION "A"
BREAKER BYPASS TRIP REACTOR TRIP "A"
BREAKER TRIP REACTOR TRIP "B"
BREAKER BYPASS TRIP REACTOR TRIP "B"
BREAKER TRIP REACTOR TRIP SV-41 (20-1/OPC)
TRIP-SOLENOID TRAIN"B" SV-42 (20-2/OPC)
TRIP-SOLENOID TRAIN"B" 1R 3R 4R 5R 6R POINT HIGH SET RANGE FLUX POWER NEUTRON HIGH RANGE DIATE INTERME-FLUX NEUTRON HIGH RANGE SOURCE FLUX NEUTRON HIGH P-10 P-10 P-6 9R 10R 11R 12R 13R 14R LEVEL WATER LOW-LOW GENERATOR STEAM P-7 T
OVERTEMP T
POWER OVER-PRESSURE LINE STEAM LOW VOLTAGE UNDER BUS R.C.P.
FREQUENCY UNDER BUS R.C.P.
15R 16R 18R 20R 21R 22R 23R P-7 P-8 ISOL.
VENT.
PHASE A CNT.ISOL.
MANUAL TION INJEC-SAFETY MANUAL TRIP SEISMIC 26R 6T 6T 10T 11T 9T LEVEL HI-HI STEAM GEN OR SIS "B"
BREAKER BYPASS REACTOR TRIP TRIP COIL UNDERVOLTAGE "B"
BREAKER TRIP REACTOR TRIP COIL UNDERVOLTAGE INJECTION SAFETY PHASE "A" ISOLATION CONTAINMENT VENTILATION CONTAINMENT ACTUATION SPRAY CONTAINMENT DRAIN -
CONTROL EMERGENCY TRIP FLUID COIL SHUNT TRIP COIL SHUNT TRIP COIL SHUNT TRIP "A"
BREAKER BYPASS REACTOR TRIP TRIP COIL UNDERVOLTAGE "A"
BREAKER TRIP REACTOR TRIP COIL UNDERVOLTAGE TRIP TURBINE MANUAL 6T 7T 1T 2T 4T FAILURE BEARING THRUST TRIP-SOLENOID SV-37 (20/AST-1)
DRAIN -
AUTO STOP OIL DRAIN - STOP EMERGENCY TRIP FLUID VALVES (4)
STOP MAIN STEAM (6)
VALVES INTERCEPTOR VALVES (4)
CONTROL GOVERNOR TRAIN "A" TRAIN "A" 2G PERMISSIVES P-6 - 1/2 NEUTRON FLUX (INTERMEDIATE RANGE) ABOVE SET POINT P-7 - 2/4 NEUTRON FLUX (POWER RANGE) ABOVE SET POINT (P-10) OR P-8 - 2/4 NEUTRON FLUX (POWER RANGE) ABOVE SET POINT FIRST STAGE TURBINE PRESSURE ABOVE SET POINT 1/2 TRAIN "B" TRAIN "A" REACTOR GENERATOR LOSS OF FIELD TURBINE TRIP GENERATOR TRIP
- ELECTRICAL CONTROL
- MECHANICAL CONTROL
- AND
- NOT
- OR
- TIME DELAY TO 15% LOAD AT 40%/MIN OPERATING RUNBACK DEH CLOSED OPER SW 25KV MOT.
BKR CLOSED 500KV BKR CLOSED 500KV TURBINE GENERATOR TRIP GENERATOR LOSS OF FIELD 5-4.16KV BKRS 2-12KV BKRS TRANS. BREAKERS UNIT AUXILIARY TRIP BREAKERS GENERATOR 500KV TRIP TRAIN "A" TRAIN "B" 29G 1G 26G 3G 4G 5G 6G 7G 9G 27G 28G 10G 11G 12G MANUAL 13G 18G 15G 18G UNIT TRIP LOCKOUT RELAY DEVICE 86G2 RELAY TRIP LINE CH.A 500KV BKR CLOSED 500KV 16G 17G 14G 19G UNIT TRIP LOCKOUT RELAY DEVICE 86G21 FIELD GENERATOR TRIP 20G 10G 21G 30G 23G 24G 25G NO.
DEVICE REMARKS FUNCTION REACTOR, TURBINE & GENERATOR TRIPS HIGH SET POINT - 2 OUT OF 4 LOW SET POINT - 2 OUT OF 4 1 OUT OF 2 1 OUT OF 2 2 OUT OF 3 PER LOOP 1 OUT OF 4 LOOPS HI NEUTRON FLUX POWER RANGE HI NEUTRON FLUX POWER RANGE NO.
1R 10R 3R 4R 5R 6R 9R 11R 12R 13R 14R 15R 16R 18R 20R 21R OVER TEMPERATURE T 2 OUT OF 4 2 OUT OF 4 2 OUT OF 4 2 OUT OF 4 LOW STEAM LINE PRESSURE 22R 23R 24R 25R 26R TURBINE TRIP SEISMIC TRIP CONTAINMENT HI RADIATION 2 OUT OF 3 PER AXIS 2/4 TRIP WITH P-7 INTERLOCK AIR PARTICLE OR GAS MONITOR RE11,RE12 1T THE THRUST BEARING SHOES TRIPS IN CASE OF EXCESSIVE WEAR OF 2T 3T 4T 6T 7T 9T THRUST BEARING FAILURE MECHANICAL OVERSPEED LOW AUTO STOP OIL PRESSURE TURBINE OVERSPEED PS22 K621 TRIPS WHEN UNIT REACHES A SPEED OF 110%
1G GENERATOR LOSS OF FIELD LOW AUTO STOP OIL PRESSURE 2G 3G 4G 5G 6G 7G 9G 10G 11G 12G 13G 14G 15G 16G 17G 19G 20G 21G 22G 18G GEN. NEUTRAL START-UP O.V.
GEN. START-UP OVERVOLTAGE GENERATOR DIFFERENTIAL UNIT OVERALL DIFFERENTIAL UNIT START-UP OVERCURRENT GENERATOR OVERVOLTAGE 23G 24G 25G 26G 27G 28G 29G 30G PCB SWITCH NO.542 PCB SWITCH NO.642 PCB SWITCH NO.542 PCB SWITCH NO.642 GENERATOR BACK-UP TRIP GENERATOR NEGATIVE SEQUENCE EXCITER OVERCURRENT TRIP OVEREXCITATION TRIP STEAM IMPULSE PRESSURE 32G2B 32G2A OXP-2/K3 51E1 PS30 46G2 81G2 21G2 PS21 PS28 59NG2 51AT21,&22 63AT21,&22 87UH2 59G2 51STU2 87AT21,&22 40G2 4 & 5
- 63AST3, 59NSTG2 63MT2 87G2 87U2 GENERATOR POINT LOW SET RANGE FLUX POWER NEUTRON HIGH TRAIN "B" VALVES (6)
STOP REHEAT E, F, G & H 4.16KV BUS D, 12KV BUS D & E AUTO-TRANSFER INITIATE POSITIVE FLUX RATE NEUTRON HIGH PRESSURE LOW PRESSURIZER PRESSURE HIGH PRESSURIZER PRESSURE CONTAINMENT HIGH TRIP REACTOR MANUAL PRESSURE CONTAINMENT HI-HI ACTUATION SPRAY MANUAL RADIATION HIGH CNT PHASE "B" ISOLATION CONTAINMENT (DEH)
OVERSPEED TURBINE SV-40 (20/ET)
TRIP-SOLENOID TRAIN "B" REACTOR TRIP REACTOR TRIP TRAIN "A" TRIP-SOLENOID SV171 (20/AST-2)
OVERSPEED MECHANICAL 5 SEC.
TURBINE STOP VVS.
CLOSED PRESSURE 2/3 OIL AUTO-STOP LOW P 2/4 NEUTRON FLUX (POWER RANGE) ABOVE SET POINT
- 1. FUNCTIONAL DIAGRAM BY WESTINGHOUSE HI NEUTRON FLUX RATE POSITIVE STEAM GENERATOR LOW-LOW WTR LEVEL HI NEUTRON FLUX SOURCE RANGE HI NEUTRON FLUX INTERMEDIATE RANGE HIGH CONTAINMENT PRESSURE REACTOR COOLANT PP BUS UNDERVOLTAGE REACTOR COOLANT PP BUS UNDERFREQ LOW BEARING OIL PRESSURE MAIN TRANSF SUDDEN PRESSURE 59ST1G2 CLOSED SIGNALS FED INTO SSPS-OUTPUT K635 AUTO STOP OIL PRESS.& TURB. STOP VALVES AUX TRANSF #21&22 DIFFERENTIAL LOW AUTO STOP OIL PRESSURE TURBINE THRUST BEARING FAILURE GENERATOR UNDERFREQUENCY TRIPS IF BEARING OIL DROPS BELOW PRESET VALUE 4/4 STOP VALVES CLOSED 2/3 AUTO STOP OIL PRESSURE OR GENERATOR REVERSE POWER GENERATOR REVERSE POWER PRESSURIZER LOW PRESSURE PRESSURIZER HIGH PRESSURE OVER POWER T 1/4 TRIP WITH P-8 INTERLOCK 2/3 TRIP WITH P-7 INTERLOCK AUX TRANSF #21&22 SUDDEN PRESSURE AUX TRANSF #21&22 OVERCURRENT (24R) TURBINE TRIP/TRAIN "A" 25R (24R) TURBINE TRIP/TRAIN "B" 53 CONTROL RODS DRIVE MECHANISM CONTROL ROD 10T 11T PRESSURIZER LOW LOW PRESSURE REACTOR COOLANT LOW FLOW REACTOR COOLANT PP BREAKER TRIP PRESSURIZER HIGH WATER LEVEL LEVEL WATER HIGH URIZER PRESS-PRESSURE LOW LOW PRESSURIZER FLOW LOW COOLANT REACTOR TRIP PP BREAKER COOLANT REACTOR COIL SHUNT TRIP P-9 P-9 P-9 - 2/4 NEUTRON FLUX (POWER RANGE) ABOVE SET POINT 12T 13T AMSAC SYSTEM AMSAC SYSTEM K101A K101B 3/4 STM GEN LO LVL COINCIDENT WITH TURB POWER >40%
3/4 STM GEN LO LVL COINCIDENT WITH TURB POWER >40%
- ATWS MITIGATION SYSTEM ACTUATION CIRCUITRY AMSAC 12T SYSTEM AMSAC TRAIN "A" SYSTEM AMSAC 13T TRAIN "B" PRESSURE OIL BEARING LOW
- ANTICIPATED TRANSIENT WITHOUT SCRAM ATWS 1R TO 23R, 25R AND PERMISSIVES TO TRAIN "A" INPUTS FROM TRAIN "B" INPUTS SIMILAR KO313 KO311,KO312 495871 THRU 495888 DWG NO.
REFERENCES LEGEND FLOW VERY LOW WATER STATOR CLG GEN 15%
LOAD >
GEN FREQUENCY UNDER-GEN CLOSED OPER SW 25KV MOT TRIP BACK-UP GEN CLOSED OPER SW 25KV MOT SEQUENCE NEGATIVE GEN 45 SEC 175 SEC 60 MIN 135 SEC (22G)
GEN STATOR COOLING TRIP POWER REVERSE GEN CONDUCT HIGH CLG WATER STATOR GEN O.V.
RUNNING NEUTRAL GEN TRIP MOTORING ANTI-GEN 30 SEC FIELD OF LOSS GEN LEVEL HI-HI STEAM GEN OR SIS GEN ANTI-MOTORING TRIP GEN STATOR COOLING TRIP GEN NEUTRAL RUNNING OVERVOLTAGE VERY LOW WATER LEVEL & LOW WATER FLOW GEN STATOR CLG WATER, HIGH CONDUCT, UNIT OVERALL DIFF HARMONIC 5 SEC DELAY ON CONTACT CLOSING SIS OR STEAM GEN H1-HI LEVEL POWER REVERSE GEN LEVEL HI-HI STEAM GEN OR SIS 31G PRESS OIL AUTO STOP TURBINE MAIN BOTH 500KV BKRS OPEN GEN FIELD BKR CLOSED 31G MAIN TURBINE AUTO STOP OIL PRESSURE PS329X TURBINE TRIPPED 2/3 PRESSURE OIL AUTO STOP LOW 2/3 TURB AUTO STOP OIL TRIPPED PRESS SW FLOW VERY LOW WATER STATOR CLG GEN 0.6 SEC (MAX)
-542 550/562BFX2
-642 550/562BFX2
-542 550/562BFX1 TIMING AUX. RELAY 500KV PCB BREAKER FAILURE TIMING AUX. RELAY 500KV PCB BREAKER FAILURE TIMING AUX. RELAY 500KV PCB BREAKER FAILURE TIMING AUX. RELAY 500KV PCB BREAKER FAILURE
-642 550/562BFX1 SW.542 BKR FAILURE PCB 500KV SW.642 BKR FAILURE PCB 500KV U1=500825 3
32G GENERATOR OUT OF STEP 78G2 32G STEP OUT OF GEN 33G 500KV TIE LINE DIFF. SET B 587-2B 8G 500KV TIE LINE DIFF. SET A 587-2A 500KV LINE CH.A TRIPPING RELAYS 33G 2 OUT OF 3 WITH P-7 INTERLOCK 2 OUT OF 4 WITH P-7 INTERLOCK 2/3 PER BUS WITH P-7 INTERLOCK 1/2 PER BUS AND 2/2 BUSSES WITH P-7 INTERLOCK (DEH) 103%
OVERSPEED TURBINE TURBINE OVERSPEED 103%
cSV041 cSV042 DEH OUTPUT DEH OUTPUT DEH OUTPUT cSV171 57.55 HZ 57.95 HZ 58.35 HZ 7.7 SEC 31 SEC 92 SEC 34G LO-LO BEARING OIL PRESSURE c62AMG2X DEH OUTPUT cSV037 DEH OUTPUT OR DEH DC BUS TRIP BEARING OIL PRESS, TURBINE SPEED 111.5%, LOW VACUUM, LOW OR DEH DC BUS TRIP BEARING OIL PRESS,
, LOW VACUUM, LOW TURBINE SPEED 111.5%
(DEH)
DC BUS TRIP OIL PRESS OR LOW BEARING LOW VACUUM, SPEED 111.5%,
TURBINE (DEH)
DC BUS TRIP OIL PRESS OR LOW BEARING LOW VACUUM, SPEED 111.5%,
TURBINE 3T 34G (DEH)
PRESS BRG OIL LO-LO 30 SEC RATE TRIP NOT FROM THE SAME CHANNEL 2 OUT OF 4 OF ANY COMBINATION OF POS MANUAL BLOCK INTLK WITH P-11 2 OUT OF 4 P 2/4 TAVG BELOW SET POINT P 2/3 PZR CHANNELS BELOW SET POINT 1
05-21-2024 05-21-2024 N/A 1
0 1
500800 MNRU 500800-1-0.dgn 500800-1-0.dgn 5 Size MNRU N/A PER CF3.ID5 REQUIRED NOT UNIT 2 I & C 500800 21 500800 FUNCTIONAL DIAGRAM REACTOR - TURBINE - GENERATOR PROTECTION BLOCK INTLK WITH P-11 2 OUT OF 3 IN ANY STEAM LINE MANUAL TRIP TATION EXCI-OVER 8G O.V.
START-UP NEUTRAL GEN O.V.
START-UP GEN DIFF OVERALL UNIT DIFF.
LINE 500KV DIFF GEN S.P.
TRANS MAIN DIFF NO.21&22 TRANS AUX TRIP EMERGENCY UNIT TRIP OVERCURRENT EXCITER RELAY TRIP LINE CH.A 500KV SW.542 BKR FAILURE PCB 500KV SW.642 BKR FAILURE PCB 500KV BKRS OPEN BOTH 500KV DIFF.
LINE 500KV O.C.
START-UP UNIT PRESS OIL AUTO-STOP LOW FAILURE BEARING THRUST TURB.
S.P.
NO.21&22 TRANS.
AUX.
HARMONIC DIFF OVERALL UNIT O.C.
NO.21&22 TRANS AUX VOLTAGE OVER-GEN BKRS OPEN BOTH 500KV FAZ1 Revised Per DFT-7*6135 594L-2A 587L-2B 511BU-2D RASTER=
DGN=
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DIABLO CANYON POWER PLANT REVISION DESCRIPTION REV PACIFIC GAS AND ELECTRIC COMPANY SAN FRANCISCO, CALIFORNIA DRAWING DWG SCALE:
SUPSDS:
SUPSD BY:
SHEET BILL OF MATL:
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NUCLEAR SAFETY RELATED A
B C
P.G.&E. SYSTEM PHASE SEQUENCE A-C-B KEY DWG. SECTION 4
PCV455C, PCV456, PCV474, PCV455A, PCV455B VALVE NOs. 8000A, 8000B, 8000C 050003 H-V-01 CNC2 H-V-02 CNC2 DESIGNATION FUSE H-V-01, 02 G-M-01, 02 F-DD-01, 02 PC455IX PC474BX 2(NO)
CONTACT A1 A1 B1 1
B1 CONTACT B1 B1 A1 G1 A1 H1
- 11 & 14 REF. DWG.
- 4. FOR FUSE RATING AND TYPE SEE FUSE LIST DWG. 066144.
- 14. FUNCTIONAL LOGIC DIAGRAM PRESSURIZER PRESS. & LVL. CONTROL 495851 11-27-2023 11-27-2023 N/A 1
0 1
1 437587-1-0.DGN 437587-1-0.DGN MNRU 4 Size MNRU FXC2 N/A NOT REQUIRED PER CF3.ID5 Revised Per DFT-7*6063 UNIT 1 ELECTRICAL 437587 24 437587 437587 SCHEMATIC DIAGRAM REACTOR COOLANT MOTOR OPERATED VALVES U2-441306
- POS455, RASTER=
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DIABLO CANYON POWER PLANT REVISION DESCRIPTION REV PACIFIC GAS AND ELECTRIC COMPANY SAN FRANCISCO, CALIFORNIA DRAWING DWG SCALE:
SUPSDS:
SUPSD BY:
SHEET BILL OF MATL:
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