ML22194A240

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2 to Updated Final Safety Analysis Report, Figure 8.3-8, Electrical Reactor, Turbine and Generator Trip Diagram
ML22194A240
Person / Time
Site: Summer 
Issue date: 06/27/2022
From:
Dominion Energy South Carolina
To:
Office of Nuclear Reactor Regulation
Shared Package
ML22194A236 List: ... further results
References
22-179
Download: ML22194A240 (1)
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17 MAIN XFMR/GEN OVERALL DIFFERENTIAL 87ClM XFMR XTFZ-ES LOW SCDE GROUND OVERCURRENT 51NL2 16 XFMR XTF2-ES OVERCURRENT 5IT2-I XFMR XTF\-EG DIFFERENTIAL 87TlM GENERATOR DIFFERENT AIL XFMR XTFZ-ES DIFFERENTIAL XFMR XTF2-ES FAULT PRESSURE OVERALL BACKUP LOCKOUT RELAY SSCIM 87T2-t 87G L

.I.

h~us lA,IB & IC t'HASE & GROUND OVERCURRENT 51BX-1A,1B & IC I

.I.

63 SEE DETAIL 1 G2-G8T 15 XFMR XTFt-EG FAULT PRESSURE 2 OF 2 63 XFMR XTFl HI SIDE NEUTRAL OVERCURRENT 51NH1 DISTANCE RELAY 14 FREQUENCY 58.5 HZ FREQUENCY 58 HZ 81-3 llr. 81-4 81-5 & 81-S VOLTAGE UNBALANCE S0G FREQUENCY 52 HZ 81-1 & 81-2

...,_ r

.L SEE DETAIL 2-----,

I TD=

96 SEC.

TD=

10 SEC.

I )

'i:::'.....-~

l GENERATOR DIFFERENTIAL LOCKOUT RELAY XFMR XTF2-ES LOCKOUT RELAY XFMR XTFI-EG LOCKOUT RELAY TRIP VOLTAGE REGULATION TO MANUAL GENERATOR STATOR GROUND TRIP BUS IA, IB & IC NORMAL INCOMING BREAKERS B6G r

GENERATOR BREAKER CLOSED 52XGB TRIP XTFl COOLER PUMP ANO FANS 86T2-I TRIP XTF2 COOLING FANS 86TIM I

TRIP GENERATOR MAIN F[ELO SUPPLY BREAKER 41M I

T VOLT REGULATOR LOCKOUT RELAY B6EX VOLT REGULATOR TRIP CORE I RUNWZSPO IOC TRIP PHUSTRP NRUNW52G HOT TRIP EXDEXFL T TRIPFL T RUNWN41D t

TT VOLT REGULATOR cd~t2 RUNWZSPD IOC TRIP PHUBTRP NRUNW52G HOT TRIP EXOEXFLT TRIPFL T RUNWN410 1---rx:1---_Jf '~------,

~

MAIN XFMR HI SIDE BREAKER CLOSED 52HSX3 VOLT REGULATOR TRIP CORE 3 VHZ-TRIP EL-TRIP EX-LOI34 EXVHI-1 TRIP GENERATOR BREAKER T

TRIP 23IZIKV BUS TIE DCB LP HTR 5A OR 5B ORSA&GR6B HI-HI LEVEL 64G GENERATOR ELECTRICAL FAULT I

l

>::?

JJ.

TD=

10 SEC.

I I

TRIP MAIN XFMR HIGH SIDE GCB j_B6TTR LOSS OF 3 OF 3 FEEDWATER PUMPS 13 FIELD FAILURE MAIN XFMR HIGH SIDE BREAKER FAIL 50 BF/Tl 12 XFMR XTF31-ES DIFFERENTIAL 87131 XFMR XTF31-ES FAULT PRESSURE 63 1 1 XFMRS ITF (31 & 32) ES OVERALL D[ff 8713 XFMR XTF4 DIFFERENTIAL 87T4 XFMR XTF4 10 XFMR XTF4 FAULT PRESSURE 03 XFMR XTF5 DIFFERENTIAL 87T5 XFMR XTF5 9

XFMR XTF5 OVERCURRENT 5lT5 NEGATIVE PHASE SEQUENCE 46 XFMR XTF31-ES LOW SIDE GROUND OVERCURRENT 51NL31 XFMR XTF31-ES H[ SIDE OVERCURRENT 51NH31 XFMR XTF-31 HI SIDE BREAKER FAILURE 51?JBF /EAl SIMILAR TO XFMR XTF31-ES CXFMR XTF32-ESl HI SIDE GROUND OVERCURRENT HI SIDE GROUND OVERCURRENT XFMR XTF5 FAULT PRESSURE I

I I

y GENERATOR BACKUP LOCKOUT RELAY B6GC TRIP BUS IA,18 & IC EMERGENCY INCOMING BREAKERS BUS l X FROM XTF5 UNOERVOLTAGE 27-5-IOX TRIP XFMRS XTF(31 &. 32l-ES 23121 KV DCB 5INH4 j_

l I

I I

I XFMR XTF31-ES LOCKOUT RELAY XFMRS XTF3\ & 32-ES OVERALL OIFF LOCKOUT RELAY XFMR XTF32-E5 LOCKOUT RELAY 8ST3l BUS 10A PHASE &. GROUN[

OVERCURRENT 51BX-10A

(...____,.>

TRIP XTF31. 32,

COOLING FANS ANO PUMPS B6T3 BUS 10B PHASE&. GOUNO OVERCURRENT 51BX-1DB TRIP BUS JOA EMERGENCY INCOMING BREAKER 8ST32 BUS !DX FROM XTF31 UNOERVOLTAGE 27-31-l X TRIP BUS 108 NORMAL INCOMING BREAKER DIRECTIONAL OVERCURRENT 67 I

I TRIP BUS 10B EMERGENCY INCOMING BREAKER 51NH5 XFMR XTF4 OVERCURRENT 51T4 XFMR XTF4 LOW SIDE GROUND OVERCLJRRENT 51NL4 j_

BUS l X LOCKOUT RELAY XFMR XTF4 LOCKOUT RELAY 86B TRIP CIRCUIT SWITCH XES4 86T4 TRIP XTF4 COOLING FANS 63 L

GENERATOR PREWARMING LOCKOUT RELAY 86 PWR TRIP BUS l A NORMAL INCOMING BREAKER MANUAL REACTOR TRIP I OF 2 L

  • r..

XFMR XTF5 LOW SIDE GROUND OVERCURRENT 51NL5 8

7 6

5 4

3 MANUAL

'A' TRAIN SAFETY INJECTION SOURCE RANGE HIGH FLUX ClNTERLOCKEO BY P6 & Pll?JI POWER RANGE HIGH FLUX HIGH SETPOINT POWER RANGE HIGH FLUX LOW SETPDINT INTERLOCKED BY PL0l OVERPOWER

.OT 2 OF 3 LOW PRIMARY COOLANT FLOW IN20F3 LOOPS UNTLK BY P7)

UNDER FREQUENCY REACTOR COOLANT PRESSURIZER LOW PRESSURE (INTLK BY P7J STEAM GEN LOW LEVEL 1 OF 2 &

LOW FEEDWATER AUTOMATIC

'A' TRA[N SAFELY INJECTION MANUAL

'A' TRAIN SAFETY INJECTION FLOW SIGNAL 1 OF 2 2 OF 4 2 OF 3 PUMP BUSSES 2 OF 3 8\X-lA,lB,lC 2 OF 3 1 OF 2 SIGNAL SIGNAL I

I MANUAL REACTOR TR[P 1 OF 2 1 OF 2 INTERMEDIATE RANGE HIGH FLUX 1 OF 2 POWER RANGE HIGH FLUX RATE 2 OF 4 2 OF 4 OVER TEMPERATURE

t. T 2 OF 3

~--~------------------~

XFMR XTF5 LOCKOUT RELAY 86T5 TRIP CIRCUIT SWITCH XES5 TRIP XTF5 COOLING FANS XFMR XTFI PREWARMING OVERCURRENT 50M-PWR I

XFMR XTFZ PREWARMING OVERCURRENT 5121-2-PWR GENERATOR STATOR GROUND PREWARMING 64G-PWR I

I I

MAIN XFMR HIGH SIDE OCB OPEN 52 I

BUS lA, 18 & lC NORMAL

[NCOMING BREAKERS OPEN I

I I

I 20F3LOW PRIMARY COOLANT FLOW IN 1 OF 3 LOOPS IINTLK BY PB)

UN ERVOL TAGE REACTOR COOLANT PUMP BUSSES 2 OF 3 27-lA,IB,lC I

.L ~P7 PRESSURIZER HIGH PRESSURE 2 OF 3 r --P7 lN 1 OF 3 LOOPS PRESSURIZER HIGH LEVEL UNTLK BY P7>

2 OF 3 LO-LO STEAM GENERATOR WATER LEVEL 2 OF 3 I OF 2

....J L:*F=---1-----1---+---+---l-----lf------~+- TRIP REACTOR

~---'----"""'

COOLANT PUMP BREAKERS I

"A" TRAIN REACTOR TRIP ROD DRlVE BREAKER 52CUVJRTA ROD DRIVE SHUNT 52(SHTR!/RTA TRIP TRIP BREAKER RTA TRIPPED l

ROD DRlVE BYPASS BREAKER 52CUVlBYB TRIP BREAKER BYB TRIPPED w "

w "

0 a

I N

I ROD DRIVE SHUNT 521SHTRIBYB TRIP ENGINEERED SAFETY FEATURES ACTUAT[ON SEE (wi OWG.1080837 SH.8

~IMS-41-011-8-2)

"'--------+----<~+-------'

.L

+

TO FEEOWATER ISOLATION TO SAFETY INJECTION SYSTEM I...__,.)

T ROD DRIVE SHUNT 52(SHTRlBYA TRIP I

j_

ROD DRIVE BYPASS BREAKER 52(UV)BYA TRIP BREAKER BYA TRIPPED 0 w 00 0 a u 2

1 TRA]N '8' REACTOR TRIPS SIMILAR TO TRAIN 'A' AS SHOWN TRAIN 'B' REACTOR SHUNT TRIPS SIMILAR TO TRAIN 'A'

) "B" TRAIN REACTOR TR[P ROD DRIVE BREAKER 52(UV>RTB TRIP BREAKER RTB TRIPPED TO FEEDWATER ROD DRIVE SHUNT 52CSHTR>RTB TRIP t

TO AS SHOWN

( )

WESTINGHOUSE REACTOR TRIP LOGIC SAFETY INJECTION SYSTEM r---------------------------------------------------------------------------------------------------1t====================-=:::'.===::t==============================~=::~

ISOLATION

~---------------

~~---~

AMSAC IKl01AI HI-HJ STEAM GEN LEVEL 2 OF 3 OR SI TRAIN

'A' (KS21) 125V DC POWER SUPPLY "B" STEAM GENERATOR HI-HI OR SI TRAIN "B" (K6211 AMSAC (Kl01Bl I '-. \

..._ T0=30 SEC.

CONTROL VALVE *1 CLOSED CONTROL VAL VE *2 CLOSED CONTROL VALVE *3 CLOSED

,.....l i CONTROL VALVE *4 CLOSED VALVES CLOSED TRAIN 'A' VALVES CLOSED TRAIN 'B' I

LEGEND:

D C OR GATE D

= AND GATE

~

= NOT z

= TIME DELAY P5

= HYDRAULIC LINE

= ELECTRICAL LINE

= MECHANICAL CONNECTION

=

I /

2 NEUTRON FLUX (INTERMEDIATE RANGE)

.---------------- - - ----------------- - ----f--------------,

ABOVE SETPOINT 2 / 2 NEUTRON FLUX <INTERMEDIATE RANGE)

BELOW SETPOINT 1-----~--+--...

TURBINE SPEED lf---J,-,

ABOVE 1350 RPM I MAIN SHAFT PUMP DISCHARGE PRESS 1---_.,I-_J LOW TRIP (2/31 I

HYDRAULIC HEADER PRESS LOW TRIP (2/3) 125¥ POWER SUPPLY "A" LUBE OIL BEARING HEADER PRESS C-----------------------------

LOW TRIP 12/3)

EXHAUST HOOD HIGH TEMPERATURE TRIP (2/3. EACH HOOQl,C----7 TURBINE SPEED ABOVE 150 RPM I EXHAUST VACUUM ABSOLUTE PRESS~7*~-_J HIGH TRIP 1

(2/3. EACH HOOOl LOSS OF STATOR COOLING TRIP ON FAILED RUNBACK THRUST BRG WEAR AXCAL POSITION TRIP 12/3)..._

MOISTURE SERPARATOR 1, ------'+'~-, I I

TRAIN A CUSTOMER TRIPS (EXTERNAL TO EHC SYSTEMI LEVEL HIGH TRIP I

V (2/3 EACH MSRl

-'\.

""~----------------------.i

'II -..

TD=l5 SEC.

~

BEARING VIBRATION I

'l-ccc--c-c=-------------------------1,(.

\

HIGH TRIP I

X T0=10 SEC.

JC---~-"

PRIMARY {(l) ZERO SPEED MISMATCH TRIP I EMERGENCY

ZERO SPEED MISMATCH TRIP PRIMARY ((l> OVERSPEEO LATCHED TRIPL !EMERGENCY

OVERSPEED TRIP PRIMARY

EXCESSIVE ACCEL/DECEL RATE CHG TRIP I EMERGENCY {P) EXCESSIVE ACCEL/OECEL RATE CHG TR[P l<D> AND

SPEED DIFFERENCE FAULT TRIP MANUAL TURBINE TRIP PUSHBUTTONS (2/2) C---------" !LOCATED BOTH ON MCB AND ON FRONT ST l OFF-LINE 2/3 ETD TEST TRIP IETD TRAIN A ANO ETD TRAIN B I

  • H --.
  • t1

............ -~ CHANNEL rHANNEL 2 HANNEL 3

+--------- - ---------1---------i-------------------_.. ___ - -

+------+---,,+--l-+-----1---1-- - -

TRAIN B CUSTOMER TRIPS IEXTERNAL TO EHC SYSTEM)

TRAIN A ETD TRIP SOLENOIDS (2/3)

INTERCEPT VV *1 CLOSED IV-I TRAIN A

[NTMD STOP V "1 CLOSED

[SV-1 INTERCEPT VVI' "2 CLOSED IV-2

ETD TRIP HEADER DUMP VLVSC-------7 (2/3)

TRAIN 8 TRAIN B ETD TRIP SOLENOIDS

ETD TRIP HEADER DUMP VLVSC-------"

(2/3)

(2/3)

LOSS OF PRESSURE PSJl?J0A JNTMD STOP vv~2 CLOSED lSV-2 LOSS OF PRESSURE PS100B I

j_

G.E. TURBINE LOGIC NTERCEPT V "3 CLOSED IV-3 INTM STOP VV 3 CLOSED ISV-3 EXTRACTION RELAY DUMP VAL VE INTERCEPT V

  • 4 CLOSED IV-4 INTMD STOP VV *4 CLOSE01(1,-,

ISV-4 STOP VALVE

  • 1 CLOSED SV-1 STOP VALVE "2 CLOSED SV-2 STOP VALVE "3 CLOSED SV-3 STOP VALVE
  • 4 CLOSED SV-4 I

I I

I LOSS OF PRESSURE PS5841 CHANNEL 2 CHANNEL 1-l RELAY

PS100X, PS100Y.

PS100Z

~

LOSS OF PRESSURE PS5B42.~

I o

"'r' LOSS OF PRESSURE PS5843

=---CHANNEL 3 l

I i

TRAIN 'A' TRAIN 'B' i,-----------------------------------------------------------------------------------------------------------*----------'

CLOSE HEATER DRAIN AND EXRACTION VALVES 1/f'-1'-0 11 0'

5' 10' 15' 20'

,...,,ANNt:.L 4

I I

CLOSE EXTRACTION VALVES I

I

' ill 1111 2/3 I

TO STEAM+---*

DUMP

_r-P-9

-,.lL.l',-

IR E ACTOR ABOVE 901/.

BY WESTINGHOUSE POWER)

I fil 2/3 I

TO I

.1.

I STEAM -.... -

DUMP P-9

..,.IU-,-, CRE AC TOR ABOVE 50%

POWER>

l TO TRAIN 'B 1 REACTOR TRIP SIMILAR TO 'A' I

L---+--+--------------_,

VOLT REG MDA CONT ACTOR OPEN CORE 2 VOLT REG MOB CONT ACTOR OPEN CORE 2 VOLT REG MOA CONT ACTOR OPEN CORE 1 t

VOLT REG MOB CONT ACTOR OPEN CORE 1 TDD~

~DO

.5 5uEC7 7 ~~s:--_'55 SEC

~-

DETAIL

' \,;'.) 62- '

1 _.,,-.

GBT 1 t

1 I ________ I CO-ORDINANCE B-16 8

IH/0512011 RHM REVISED PER ECR-50592 AND ECR-71548 & ECR-50555 7

H7/0Bf02 JMR REVISED PER ECR 50138 6

62/07/Bl JTS REVISED PER ECR-50378 10 05/1Jml9 CMS REVISED PER ECR-72331 9

Ul/26m11 RHM REVISED PER ECR-50945D NO.

DATE REVISION P7

=

3 I 4 NEUTRON FLUX (POWER RANGEl BELOW SETPOINT AND 2 /

2 TURBINE IMPULSE CHAMBER PRESSURE BELOW SETPOINT PS

= 3 / 4 NEUTRON FLUX (POWER RANGE)

BELOW SETPDINT P10

= 2 / 4 NEUTRON FLUX (POWER RANGE)

ABOVE SETPDINT

= 3 I 4 NEUTRON FLUX (POWER RANGE)

BELOW SETPOINT P-9

= 2 / 4 NEUTRON FLUX (POWER RANGE)

ABOVE 50% SETPOINT GENERATOR BREAKER CLOSED 52XGB VOLT REG LOSS OF PRIMARY PTS CORE 1/

CORE 2 MGR KW GM MAIN XFMR HI SIDE BREAKER CLOSED 52HSX3 VOLT REG LOSS OF PRIMARY &

SECONDARY PTS CORE I/

VOLT REG TRANSFER TO MANUAL CORE I/

CORE 2 CORE 2 DETAIL 2 FSAR Figure 8.3-8 SOUTH CAROLINA ELECTRIC & GAS COMPANY VIRGIL C. SUMMER ttJCLEAR STATION ELECTRICAL REACTOR, TURBINE AND GENERATOR TRIP DIAGRAM Ll DESIGN ENGINEERING SCEl[;

MGR scs o sc-cc.,"NY V, C. SUMMER NUCLEAR STATION JElf{JNSVILLE. S. C.

MGR chk MGR scs JMM TF CKO. BY APPROVAL HADE CHECKEa JTS MGR SCOLE E 203 201 IJlAWING MUM8Ell LE APPROVAL

s.

LEK 10 SHT. ~l'BER REV 203201-0001 A

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