ML20302A308

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9 to Fire Hazards Analysis Report, Appendix C-3, Breaker/Fuse Coordination Summary
ML20302A308
Person / Time
Site: Davis Besse Cleveland Electric icon.png
Issue date: 09/25/2020
From:
Energy Harbor Nuclear Corp
To:
Office of Nuclear Reactor Regulation
Shared Package
ML20302A348 List:
References
L-20-234
Download: ML20302A308 (24)
v • d • e


Text

Davis-Besse Unit 1 Fire Hazard Analysis Report DAVIS-BESSE NUCLEAR POWER STATION UNIT NO. 1 APPENDIX C-3 BREAKER/FUSE COORDINATION

SUMMARY

C3-i FHAR Rev 26 10/2014

uavrs uesse unr-E, l_ FIRE HAZARD A}ilALYSIS REVISION REVISION: 29:28 DATE DATE  : 9 /L8

9/2020 APPENDIX C-3 CIRCUIT COORDINATION EVALUATION STIMMARY POWER COORD-SUPPLY CIRCUIT COMPONENT DESCRI PTION INATED NOTES 1-N ]-PDl_21,4. DBClPN 125VDC BATTERY CHARGER YES 1 1PD13 1A DC MCC 1 DC MCC YES 1 1PDl34A DBClN 125VDC BATTERY CHARGER YES 1 1P 1PD1O3A DBClP 125VDC BATTERY CHARGER YES 1 1PDlO4A DC MCC 1 DC MCC YES 1 1PDlO5A DBClPN 125VDC BATTERY CHARGER YES 1 2N 2 PD221A DBC2 PN FDR TO BAT CHGR DBC2PN YES 1 2PD231A DC MCC 2 DC MCC YES 1 2 PDz 34A DBC2N BATTERY CHARGER DBC2N YES 1 2P 2 PD2 O3A DBC2P BATTERY CHARGER DBCzP YES l_

2 PDz O4A DC MCC 2 DC MCC YES 1 2 PD2 O5A DBC2 PN FDR TO BAT CHGR DBCzPN YES 1 C1 ( 1PD1PO5A) AC11O LARGEST CONT PWR FUSE YES I CABLE BUS D2 BREAKER CONT POWER ALT ACC 1 ,2Q

\-z (APDANO 7A) VARIOUS RECEPTACLE YES 1 APAC2 O 1A P18 0 BACKUP SWP YES 1 CABLE BUS XAC BUS TIE XFMR AC ACC 4 ,20 c3 615 ( 1PD1PO 9A) EDG DG GOV & VLTG CNTRL (D1P) YES 1 (1PY10sA) EDG HVAC VAR, LGST LOAD USED (Y1) ACC t_ ,13

( 3PY3 0 sA) EDG HVAC- VAR LARGEST LOAD (Y3 ) ACC 5 ,13 (ACV11318) EV113 1 FP DSL DAY TNK VLV (D]-P) YES 5

( ACV113 1G ) RC3007 FP DSL DAY TNK VLV (Y1) YES 5 c3616 ( 2PD2PO 9A) EDG DG GOV S. VLTG CNTRL (D1P) YES t_

(2Py2 0 5A) EDG HVAC vAR, LARGEST LOAD (Y2) ACC 1 ,13 (4PY40sA) EDG HVAC' vAR, LARGEST LOAD USED (Y4) ACC 5 ,13 c3 5 t_7 (r-cGD1o2C) EDG DG GOV & VLTG CNTRL (D]-P) YES t_

c3618 ( 2CGD2 02C) EDG DG GOV & VI,TG CNTRL ( D2 P ) YES 1 c3621 ( 1CGD1O2D) EDG DG GOV & VLTG CNTRL (D].P) YES t-( 2CGD2O2D) VARIOUS RECEPTACLE YES t-c3628 ( 1CY108B) IE INST VAR, LARGEST LOAD USED YES 1 c3529 (2CY2088) IE INST VAR, LARGEST LOAD USED YES t c3530 ( lCY108A) AUX SDP VAR, LARGEST LOAD USED ACC 1,1-4 (zCY2 0 8A) AUX SDP VAR, LARGEST LOAD USED ACC 1-, L4 c3645 ( r-cYr_04AA) AFWS VAR, LARGEST I,OAD (Y1A) YES 1,9 c4602 (2CY2O8AE) NI VAR, LARGEST LOAD USED YES 1r 9 c462s (zcv2 0 4AA) AFWS_ VAR, LARGEST LOAD (Y2A) YES ar9 c4808 ( 1CY1O 8AB ) NI VAR, LARGEST LOAD USED YES L,9 cs705 (,2Cy2 t_ 1B ) VARIOUS RECEPTACLE YES 7

( 2CY4 r_9A) VARIOUS RECEPTACLE YES 5 ,18 c5705 (ACYAU4 98) VARTOUS RECEPTACLE ACC 6 ,9r18 (BCYBUs3B) VARIOUS RECEPTACI-,E ACC 5 ,9r18 c5709 (t_cY1t_2c ) VARIOUS RECEPTACLE YES 1 o SYMBOLS; ACC = ACCEPTABLE l_

Davis Besse Unit I FIRE HAZARD A}IALYSIS REVISION REVISION: 29t28 DATE DATE  : 9/1,8

9/2020 APPENDIX C.3 CTRCUIT COORDINATION EVALUATTON

SUMMARY

POWER COORD-SUPPLY CTRCUIT COMPONENT DESCRI PTION INATED NOTES cs709 ( 2CY2 11C) VARIOUS RECEPTACLE YES t_

c5715 ( ACYAU3 2A) VARIOUS RECEPTACLE YES 6, 18 (BCYBU2 3A) VARIOUS RECEPTACLE YES 6, l-8 c57 r_6 (t_cY112A) VARIOUS RECEPTACLE ACC 31 (2CY211A) VARIOUS RECEPTACLE ACC 31 C57 L7 (1CY116A) VARIOUS RECEPTACLE ACC 5, 18 (zCY212A) VARIOUS RECEPTACLE ACC 5, l-8 C57 1B (ACYAU4 3A) VARIOUS RECEPTACLE YES 6 t_8 (BCYBU23B ) VARIOUS RECEPTACLE YES 6 I 18 cs755C ( 2CD2 PleA) SFAS SFAS ACTUATED SV CH 1 YES 5 (2CY2o6A) NNI RCS PRESSURE ACC 1 ,9,7-7 c5755D I2CD2 P19A) SFAS SFAS ACTUATED SV CH ]- YES 7 (2CY2 0 7A) SFAS SFAS ACTUATED SV CH ]- ACC 5 ,9 ,1-7 c5755E ( 2CY2 0 6A) Nr/RPS VAR, LRGST LOAD USED NI ACC L,9,19 c5755G 2CY2A2 O 5A IE INST VAR, LARGEST LOAD USED ACC 1,9 ,26 c5755D (2CD2Pr_ 8A) VARIOUS RECEPTACLE YES 1 (4CY4 07A) SFAS SFAS ACTUATED SV CH 1 ACC L,9 ,17 c57 5 9C (BPYBU5l-A) NNI X VAR, LARGEST I,OAD USED (X) YES 1, 28 cs7 5 0D (APYAU2 6A) NNI Y VAR, LARGEST LOAD USED YES L ,28 c57 51A (1CY1t_sB) SFRCS VAR, SFRCS RLY CH 4 (D2P) ACC 1,9 , L'7

( 1CYE2 l_ t_A) SFRCS VAR, SFRCS RLY CH 4 (D2P) ACC 5,9,L7 cs7 62A ( r-cY121_A) SFRCS vAR, SFRCS RLY CH 4 (D2P) ACC q 1'7

( t-PD1Pt_ 1A) SFRCS VAR, SFRCS RLY CH 4 (D2P) ACC q 1'1 c57 62C ( 1CD1P18A) SFAS SFAS ACTUATED SV CH 1 YES t-c5'7 62D ( 1CY107A) SFAS SFAS ACTUATED SV CH 1 ACC 1,9 c57 62E (1CYr_o6A) Nf, RPS VAR, LARGEST LOAD USED ACC Lr9 c57 52F (1CY106A) NI, RPS VAR, LARGEST LOAD USED ACC 1,9 cs7 62G ( t_PY111AA) 1E INST VAR, LARGEST LOAD USED ACC 1r 9 c57 63A t-cYt_At_ 0 2A IE INST VAR, LARGEST LOAD USED ACC 1,9 ,26 c57638 1-CYl-t-28 IE INST VAR, LARGEST LOAD USED ACC 7 19 c5753C (1CD1Pl_9A) SFAS SFAS ACTUATED SV CH ]- YES t-c5 753D ( 1CD1P19A} SFAS SFAS ACTUATED SV CH ]- YES 1 (3CY307A) SFAS SFAS ACTUATED SV CH 1 ACC 4,9 c57 92 (2CY22l-B ) SFRCS vAR, SFRCS RLY CH 4 (D2P) ACC 5 ,17

( 2PD2P11A) SFRCS VAR, SFRCS RLY CH 4 (D2P) ACC 5 ,1"7 c57 92F. ( 2CY2 1sB ) SFRCS VAR, SFRCS RLY CH 4 (D2P) ACC 1,9 ,L7

( 2CYFz 11A) SFRCS VAR, SFRCS RLY CH 4 (D2P) ACC 5r9 1nt Ll cs7 98 (2Cy207AA) PAM SG HI POINT VENT VLVS YES t_

SYMBOLS; ACC = ACCEPTABLE 2

Davis Besse Unit 1 FIRE HAZARD A}TALYSIS REVISION29:28 REVISION:

DATE DATE  : g/t8

9/2020 APPENDIX C.3 CIRCUIT COORDINATION EVAIUATION

SUMMARY

POWER COORD-SUPPLY CIRCUIT COMPONENT DESCRIPTION INATED NOTES cs798 (2CY20 9AA) PAM SG HT POINT VENT VLVS ACC 5, 15 cs7 99 ( r_cYr_o 7AA) PAM SGH I POINT VENT VLVS YES t-(1CY1o9AA) PAM SGH I POINT VENT VLVS ACC 5, l-5 c6708 (1CY104A) CREVS VAR, LARGEST LOAD USED ACC I ,12 c5709 (2CY2048) CREVS VAR, LARGEST LOAD USED ACC I ,12 c571-4 ( 1CY1048) CREVS VAR, LARGEST LOAD USED ACC 1,, tz c57 15 (2CY2 04A) CREVS VAR, LARGEST LOAD USED ACC I ,12 CDE- ]-1-B1 ( 1CY117C) VARIOUS RECEPTACLE ACC 7 ,16 CDE_ ].182 ( 1CY117D) VARIOUS RECEPTACLE ACC 7 ,15 CDE_ 1241 (1CD1P2 0A) VARIOUS RECEPTACLE YES 1 CDE - ]-242 ( 1CD1P2 OC ) VARIOUS RECEPTACLE YES 7 CDF- 11A1 ( 2CYz 14C) VARIOUS RECEPTACLE ACC 5 CDF- 11C (2CD2P2 OB ) VARTOUS RECEPTACLE YES L CDF- 1]-D (2CD2P2 0D) VARIOUS RECEPTACLE YES 7 CDF12A- ]- (2CD2P2 0A) VARTOUS RECEPTACLE YES l_

D1 2 PAD1O 8A CD 4. 15KV XFER SWGR YES 5 ,24 D1N ]-CD1N15A 2c6459 MDFP CONTROL VLV POSITION YES 5 3CD1N15A RC3 6 03 RELAY CABINET RC35O3 YES 2 3PD1NO3A YRF3 4 8 OVAC/12 sVDC RECTIFIER ACC 26, 31 3PD1NO5A C1 C1 CONTROL POWER (ATT) YES 1 3PD1NO7A Et- E1 CONTROL POWER YES 1 3PD1NO9A c3 615 EDG1-]- PAI{EI, (NORM) YES 2 3PD1N14A c4806 CRD BKR D SHUNT TRTP CKT YES 2 APDlNO4A DAI{ ]-25VDC DIST PANEL ACC 3l_

DlNA 1PD135A MSI-o 5 AFPT ]- MS IN ISOL VLV YES 1 D1P 1CD1P1OA RC3 7 05 RELAY CABINET YES 5 1CD1P13A 2c5452 AFP #T CTRL VLV POSITION YES 5 1CD]-P]-54 pDrs5 0l_7 PDISSO ].7 YES 2 1CD].P18A c57 62C SFAS CH 1 SV's (DlP) YES 1 1CD1P19A c5763D SFAS CH. 3 LOGTC PANEL YES 1 1CD1P2 OA CDE - 12A- 1 AFP SUCT VLV, GOV YES 1 1CD1P2 OB RC4604 NON SSD RELAYS YES 7 lCD1P2 OC CDE - ]-2A-2 DISCONNECT SWITCH YES 7 1CD1P2 ]-A RC3501 RELAY CABTNET RC3501 YES 5 1CD1P2 ]-B RC3701 RELAY CABINET RC3 7 O ]- YES 5 ICD1P2 1C CDE 1 lD CONTROL POWER TO CDE]-].D YES 5 1CD1P2 1D RC3607 RELAY CABINET RC3607 YES 5

]-CD1P2 3B FIS ]-4 2 7C FLOW SWITCH CCWS PUMP YES t_

1CD1P2 3C Frs14 32C FLOW SWITCH CCWS PTIMP YES 1 1CD1P2 3D Frs 14 2 2C FLOW SWITCH CCWS PUMP YES 1 1PD1PO3A YRFl 480VAC/ 12 SVDC RECTTFTER ACC 26 31 1PD1PO5A C1 C]- CONTROL POWER (ALT) YES 1 1PD1PO5A P43-3 CCW PUMP 3 YES 1

]-PD1PO7A E1 E]- CONTROL POWER YES 1 1PDlPO8A P3-3 SW PUMP 3 YES 1 SYMBOLS; ACC = ACCEPTABLE 3

Davis Besse Unit 1 FTRE HAZARD A}ilALYSTS REVISION29:28 REVISION:

DATE DATE  : 9 /L8

9/2020 APPENDIX C-3 CIRCUIT COORDINATION EVALUATION

SUMMARY

POWER COORD-SUPPLY CIRCUIT COMPONENT DESCRI PTION INATED NOTES D1P ]-PD].PO9A c3 515 EDG1-1 PAI{EL (NORM) YES 1 l_ PDI- P 1l_A c5 7 624 SFRCS CH. 3 RELAYS YES 1 t_ PDt_ P t_24 RC4801 RELAY CABINET RC48O1 YES t-

]-PD1-P144 c4603 CRD BKR B SHUNT TRIP CKT YES 2 ACD]-P2 4A ss8l_5 AFPT 1 SPEED MON C2735 YES 5 APD1 PO 4A DAP 125V DC DIST PA}TEL ACC 31 DlPA 1pD107A AF3 87 0 AFWP 1 DTSCHARGE TO SG1 YES 1 D2 (BPDBN0 7A) VARIOUS RECEPTACLE YES 1 BPAD2lOH P24t MTR DRIVEN FEED PLI$4P ACC 1 ,20 BPAD2DFTA F7 SUBSTATTON F7 ACC 1 ,20 D2N 2 PD2N]-74 RC4606 DC CONT PWR TO PORV YES l_

4CD2N]-54 RC3 5 04 RELAY CABINET RC36O4 YES 5 4PD2NO3A YRF4 48 oVAC/r-2 SVDC RECTTFTER ACC 26, 31-4PD2NO5A Dl- D]- CONTROL POWER YES t-4 PD2NOTA Fl_ F]- CONTROL POWER YES 1 4 PD2NO 9A c3 5t_5 EDG].-2 PA}ilEL LTGHTS YES 2 4PD2N]-44 c46]-2 CRD BKR C SHUNT TRIP CKT YES 5 BPD2NO4A DBN 125VDC DIST PANEL ACC 31 D2P 2CD2P1OA 2c6460 MDFP CTRL VLV ZC545A YES 5 2CD2P]-34 2c645]- AFP #Z CTRL VLV 2C5451 YES 5 2CD2P15A PDrS50 18 PDIS5 O ]-8 YES 2 2CD2P18A c5755D SFAS CH 4 LOGIC PAI{EL YES l_

2CD2P1 9A csTssc SFAS POWERED SV YES 1 2CD2P2 OA CDF- 12A.1 CONT PWR AFWP GOV YES 1 2CD2P2 OB CDF- 11C CONT PWR SW1383 YES 1 2CD2P2 OC RC4505 NON SSD RELAYS YES 7 2CD2P2 OD CDF - 1]-D NON SSD CONT PWR YES 7 2CD2P2 ]-A RC3702 RELAY CABTNET YES 5 2CD2P2 ]-B RC3 502 RELAY CABINET RC35O2 YES 5 2CD2P2 ]-C RC3508 RELAY CABINET RC3508 YES 5 2CD2P2 3A FISIl-422D FLOW SWITCH CCWS PUMP YES l_

2CD2P2 3 B FISIl-427D FLOW SWTTCH CCWS PUMP YES l_

2PD2PO 3A YRF2 4 I oVAC/ r-2 5VDC RECTTFTER ACC 26, 3l-2PD2PO 5A Dt_ D1 CONTROL POWER YES t_

2PD2PO 6A P43-3 CCW PUMP 3 YES l_

2PD2PO 7A F1 F1 CONTROL POWER YES 1 2PD2PO 8A P3-3 SW PUMP 3 YES 1 2 PD2 PO 9A c3 5r_5 EDG1-2 PAI{EL LIGHTS YES t_

2PD2 P]- ]-A c57 92 SFRCS CH 4 RELAYS YES t-2PD2 P12A RC4605 DC CONT PWR TO PORV YES 5 2PD2 P14A c4 505 CRD BKR A SHUNT TRIP CKT YES 5 BCD2P24A \-z /Jo AFPT 2 SPEED MON YES n BPD2PO4A DBP 12sVDC DIST PANEL ACC 31 DAN ACDAN19A c4603 CRD BKR B SHUNT TRIP CKT YES 5 ACDAN2 OA XAC BUS TTE XFMR AC YES 5 ACDA}il2 ]-A c17 01 MISC WASTE EVAPORATOR PNL YES 6 ACDAN2 3A c27 0t BORIC ACTD EVAPORATOR PNL YES 6 ACDA}I2 5A c352s DG1 - 1 DC OIL PMP CTRL BOX YES 6 APDA}ilo1A c5750A ALT GEN XFMR CABINET YES 6 APDA}T O 2A HAO l 13 .8KV SWGR A DC CTRL YES 5 APDA}TO2B HAAC 13 .8KV SWGR A DC CTRL YES 5 APDA}IO 3A E5 48OVAC USS DC CTRL YES 6 APDA}IO 4A E2 48OVAC USS DC CTRI-, YES 6 APDANO 5A E3 48OVAC USS DC CTRL (ALT) YES 5 APDANO 6A E4 48OVAC USS DC CTRL YES 6 APDA}ilo 7A (1) 4 . ]-6KV AC SWGR YES 1 APDA}T2 4A RC4802 CONT PWR (tO MUTK, SG DRN YES 5 SYMBOLS; ACC = ACCEPTABI,E 4

Davis Besse Unit l- F]RE HAZARD AI{ALYSIS REVfSION29:28 REVISION:

DATE DATE  : g /L8

9/2020 APPENDIX C-3 CTRCUIT COORDINATION EVALUATION

SUMMARY

POWER COORD-SUPPLY CIRCUIT COMPONENT DESCRIPTION INATED NOTES DAP ACDAPl 9A RC4501 RCS COOL CABINET YES 6 ACDAPz 1A c3 3l-8 FIRE PROTECTION EQUIP YES 6 ACDAPz 18 c3318 F]RE PROTECTION EQUIP YES 6 ACDAPz 2A c57 622 SFRCS NON-ESS SV YES 6 ACDAP2 3A x01 START UP XFMR 1 YES 5 ACDAP24A xl_1 AUX XFMR 11 YES 6 ACDAP2 5A c3305 GEN ISO PHASE BUS A}INUN YES 5 ACDAP2 6A RC37 17 RELAY CABINET YES 6 ACDAP2 5B RC2 82 s RELAY CABINET YES 5 ACDAP2 7A RC3 0 03 RELAY CABINET YES 6 ACDAP2 7B RC3001 RELAY CABINET YES 5 ACDAPz 8A RC3 7 15 RELAY CABINET YES 6 ACDAPz 8B RC175 0 RELAY CABINET YES 5 ACDAP2 9A RC4311_ RELAY CABINET YES 6 ACDAP2 9B RC24 04 RELAY CABINET YES 6 ACDAP2 9C RC300s RELAY CABINET YES 6 ACDAP3 OA c3304 AUX BOILER CTRL PA}IEL YES 6 ACDAP3 2A BCE5 LTG DIST CENTER E5 BRKR YES 6 ACDAP3 3A C35IO RELAY CABINET YES 5 ACDAP3 3 B c3517 RELAY CABINET YES 6 APDAPO l.A c5750A ALT GEN XFMR CABINET YES 6 APDAPO 2A HAO ]- 13 .8KV SWGR A DC CTRL YES 1 APDAPO 2B HAAC 13 .8KV SWGR A DC CTRL YES 6 APDAPO 3A E5 48OVAC USS DC CTRL YES 6 APDAPO 4A E2 48OVAC USS DC CTRL YES 6 APDAPO 5A E3 48 OVAC USS DC CTRL (ALT ) YES 6 APDAPO 5A E4 48OVAC USS DC CTRL YES 6 APDAPO 7A C2 4.16KV AC SWGR YES 1 APDAPO 8A D3602 FUSE PANEL D3502 YES 6 DBN BCDBNl 9A c4646 CRD BKR A SHUNT TRIP CKT YES 6 BCDBNz OA XBD BUS TIE XFMR BD YES 6 BCDBN2 1A c27 02 MISC WASTE EVAPORATOR PNL YES 6 BCDBN2 3A YES 5 BCDBNz 5A c3626 DG 1..2 OIL PMP CTRL BOX YES 6 BPDBNO 1A c5750B ALT GEN XFMR CABINET YES 5 BPDBNO 2A HBO ]- 13.8KV SWGR A DC CTRL YES 5 BPDBNO2B HB14 13 .8KV SWGR A DC CTRL YES 5 BPDBNO 4 A F2 48OVAC USS DC CTRL YES 6 BPDBNO 5A F3 48OVAC USS DC CTRL YES 6 BPDBNO 7A D2 BREAKER CONT POWER ALT YES 1 BPDBNl ]-A F7 SUBSTATION F7 YES 1 BPDBN2 4A RC4 I 04 RELAY CABINET YES 5 DBP BCDBPO 9A c6720 A\N POSTTTON INDICATION YES 6 BCDBP]- 6A c57 922 SFRCS NON ESS SV YES 6 BCDBP]-74 c4301 GEN VOLT REG CABINET YES BCDBP]- 8A JTs3 02 GEN FIELD BRKR ,fT5302 YES A BCDBPl9A c3303 GEN COOL SYS CABINET YES BCDBP2 OA c3 6 t_1 RELAY CABINET C3 5 ]. ]. YES 6 BCDBP2 OB c36t_8 RELAY CABTNET C3 6 ]- 8 YES 5 BCDBP2 ]-A RC4602 RCS PRZR HEATERS CABINET YES 5 BCDBP22A c5105 COMB BUT VLV STN CABINET YES 6 BCDBP23A cs757B EHC SYSTEM CABINET YES 6 BCDBP24A cI7 08 PROCESS SAMPLE PAI{EI, YES 6 BCDBP25A lIT53 02 GEN FIELD BRKR ,JT5302 YES 6 BCDBP2TA x02 START-UP XFMR 02 YES 6 BCDBP2 8A x1 MAIN XFMR 1 YES 6 BCDBP2 9A RC3 7 18 RELAY CABINET YES 5 BCDBP2 98 RCz82 5 RELAY CABINET YES 5 BCDBP3 OA RC3 7 16 RELAY CABINET YES 5 BCDBP3 OB RC17 5 1 RELAY CABINET YES 5 SYMBOLS; ACC = ACCEPTABLE 5

Davi-s Besse Unit. 1 FIRE HAZARD A}TAIYSIS REVISION:28 REVISION: 29 DATE DATE  ; 9/TB

9/2020 APPEIIDIX C.3 CTRCUIT COORDINATION EVALUATION SUM}4ARY POWER COORD -

SUPPLY CIRCUTT COMPONENT DESCRI PTION fNATED NOTES DBP BCDBP3 1A RC44 10 RELAY CABINET YES 5 BCDBP3 1B RC3004 RELAY CABINET YES 6 BCDBP3 1C RC3002 RELAY CABTNET YES 5 BCDBP3 2A c33 18 FIRE PROTECTION EQUIP YES 6 BCDBP32B c33 18 FIRE PROTECTION EQUIP YES 6 BCDBP3 3A RC44 0 1 RELAY CABINET YES 6 BCDBP3 3B RCz3 04 RELAY CABINET YES 6 BCDBP3 4A cs760c ELEC METER & XDUCER CAB YES 6 BPDBPO 1A c57508 ALT GEN XFMR CABINET YES 6 BPDBPO 2A HBOl ]-3.8KV SWGR A DC CTRL YES 6 BPDBPO2B HB14 13 .8KV SWGR A DC CTRL YES 5 BPDBPO4A F2 48OVAC USS DC CTRIJ YES 5 BPDBPOSA F3 48OVAC USS DC CTRL YES 6 BPDBPO 7A D2 BREAKER CONT POWER ALT YES 1 BPDBPO 8A D3503 FUSE PA}IEL D3603 YES 5 BPDBP]- 1A F7 SUBSTATION F7 YES 5 DC MCC 1 1-PD101A D]-P ]-25V DC DIST PAT{EL ACC 31 l_PDl_06A PL97 -2 HPI PUMP 1 DC LO PTMP YES 1 1PD12 8A D 1PA 125V DC MCC YES 1 1PD132A DIN 125V DC DTST PANEL ACC 31 1PD145A DlNA 125V DC MCC YES 1 APDI11A D3 7E1 EMER LTG XFR sw1 YES 5 APDl 1 2A D57E1 EMER LTG XFR SW3 YES 5 APD1 13A MPo724 RCP BACKUP OT L LIFT PMP YES 5 APD1 14A MPo 72 r RCP BACKUP OI L LTFT PMP YES 5 APDl 15A MPo281 MFPT 1 EMERG BRG OIL PMP YES 5 APDI15A YVA 125V DC INVERTER ACC 3l-APDl ]-74 P- 3 71C MUP1 AUX LUBE OIL PUMP YES 1 APD1 ]- 8A MPo2 10 TG EMER BRG OIL PLIMP YES 30 DC MCC 2 2PDz O2A D2P 125V DC DIST PA}-TEL ACC 31 2 PD2 O5A P198 -2 HPI PMP 2 DC LUBE OIL PMP YES l-2pD233A D2N l-25V DC DIST PAI'IEL ACC 31 BPD2 114 D41Et_ EMER LTG XFR SW 2 YES 6 BPD2 124 D4 9E1 EMER LTG XFR SW 4 YES tr BPD2 134 MPo723 RCP BACKUP OIL L,IFT PMP YES 6 BPDz 14A MP07 22 RCP BACKUP OIL LIFT PMP YES 6 BPD2 15A MP02 82 MFPT 2 EMERG BRG OIL PMP YES 5 BPDz 15A YVB 125V DC TNVERTER ACC 3l-BPDz17A P- 3 72C MUPz AUX LUBE OIL PUMP YES 1 BPDz 18A MP02 3 0 T-G H2 EMERG SEAL OIL PMP YES 6 E1 1PBE1O5A E15 48OVAC MCC YES 1 1PBE1O5A E12A 48 OVAC MCC YES t_

1PBE1O7A E11A 48 OVAC MCC YES t_

1PBE10 9A E12E 48OV AC MCC YES t_

1PBE11OA E14 48 OVAC MCC YES 1 1PBE111A P55-1 CS PUMP ]- YES 1 1PBE118A E ]-64 4 8 OVAC MCC YES 1 E11A l-pBE110l-A E t- l_c AUTO BKR REMOVED YES 1 I 1pBE1r-024 MCo 62 1 H2 DILUTION SYS BLOWER ]- YES 6 1PBEl-1034 HPO2C HPI 1 DISCH ISO VLV YES 1 IPBEt_t_044 IW54 39 ECCS RM 105 HVAC ISO VLV YES 5 1PBE11O5A HPO2D HPI 1 DISCH ISO VLV YES l_

1PBE11O5A DHO 18 LPI LINE 1 VLV YES 1 1PBE11O7A IvMs44 0 ECCS RM 105 HVAC ISO VLV YES 6 1PBE1112A DHO 98 CTMT SUMP ISO VLV B N/A 5 1PBE1113A rw5090 CTMT H2 DLTN LINE ]- VLV YES 5 1PBE1115A Mp8 914 ECCS SUMP PUMP ]-A YES 5 1PBE1116A MP8 9 18 ECCS SUMP PTIMP ]-B YES 6 SYMBOLS; ACC = ACCEPTABLE 5

Davis Besse Unit, I FTRE HAZARD A}IALYSfS REVISION29:28 REVISION:

DATE DATE  : 9 /L8

9/2020 APPEIIDIX C.3 CIRCUIT COORDINATION EVALUATION

SUMMARY

POWER COORD-SUPPLY CTRCUIT COMPONENT DESCRIPTION INATED NOTES E]-1A t_PBE11L7A MP8 934 ECCS SUMP PUMP 3A YES 6 1PBE1118A MP8 938 ECCS SUMP PUMP 38 YES 6 1PBE112 OA E118 4 8 OVAC MCC YES 1 1PBE112 1A DH2733 DH PUMP 1 BWST SUCT VLV YES 1 1PBE112 3A ItIV2 0 0 1 CTMT ISO VAIVE PENET 72A YES 6 t-PBE1l-244 MV2003 CTMT TSO VAIVE PENET 74F. YES 5 1PBE112 9A IvNTRCIO PRZR SPRAY LINE ISO VLV YES 6 1PBE1132A E1]-D AUTO BKR REMOVED YES 1,8 1PBE1157A DHOTB BWST ISO VLV B YES 1

]-PBE117OA IVI\Is038 CTMT H2 DTLUT OUT ISO \rLV YES 6 APBE]- ]- O 9A IvffMU4 0 DEMIN WTR STOP VLV YES 6 APBE1125A IVIVMU12A MU FII.,TER 1 IN VLV YES 6 E118 ]-PBE11O8A IvI\/2 0 t-24 CTMT NORM SUMP ISO VLV NO 6 ,27-1PBE1155A DH27 35 PRZR SPRAY LINE ISO VLV NO L,2L 1PBE1158A IWI_567A CC IN ISO VLV ]- TO CRD NO 6 ,21 1PBE1152A CFO 1B CORE FLOOD TK 1 TSO VLV NO I ,21 1PBE1163A IVIVCFO2B CF TAI{K 1 SA},IPI,E VALVE NO 5 ,21

].PBE].1654 IWCFO 58 CF TA}ilK ]- VENT VALVE NO 5 ,21-lPBE].16 9A MCo551 CTMT RECIRCULATIN FA}il 1 NO 6 ,21-IPBEt-l_714 MUO2A LETDOWN CLR OUT VLV NO 1,21-1PBE11-72P. PTTJO2B LETDOWN CLR IN VLV NO L,21-l_PBEt_t_734 ccL4 07A CC OUT ISO VLV NO L,21 l PBE ]- L.] 4A MUs 9A RCP 2-]- SEAL RET LINE VLV NO I ,21

]-PBE1175A MUs 98 RCP 2 -2 SEAL RET I.,INE VLV NO  ! ,21-

]-PBE117 5A cct_4114 CC IN ISO VLV NO L ,21-1PBE1L77A MUs 9C RCP 1-1 SEAL RET LINE VLV NO 1,21-

]-PBE117 8A MU5 9D RCP ]--2 SEAL RET LINE VLV NO L,2L 1PBE1 18 OB XYE2A INCOMING XFER YE2 NO l,2L l-pBE1t_81_A IvIvO24OA RC PRZR SMPL VLV 1 NO 6 ,2L 1PBE1183A DH]-2 DH NORM SUCT LINE VLV NO 1-,2L E11C 1PBE113 7A IVIVS070 CTMT VACM REL]EF VLV YES 5

]-PBE113 8A IVIV507t_ CTMT VACM RELIEF VLV YES 5 1PBE113 9A IVIVs072 CTMT VACM RELfEF VLV YES 5 t_PBEL14 0A IVfi/SO?3 CTMT VACM RELIEF VLV YES A

]-PBE1141A IVIVS 0 74 CTMT VACM REL]EF VLV YES 6 1PBE1142A swI3 6 6 CAC ]- IN ISO VLV YES 1 1PBEI144A IW52 61A CTRM EMER VENT FN IN VI,V YES 6 IPBEl-l_504 E1lE 48OV AC MCC FEEDER YES 1 lpBEt_t_544 c75-1 CCW PMP RM VENT FAI{ 1 YES 5 1PBE1]-564 cs153 0 CTMT SPRAY ISO VLV YES 1 IPBEt_l-59A MVo6t_2 MN FW ]- ISO VLV YES 6 APBE1167A BSWXT 9D3 CTMT LIGHTING DISC SWITCH YES 6 APBE1158A x3 9D1 CONTAINMENT LTGHTING XFMR YES 6 APBE118 5A NC3801 H2 RECOMBINATION STARTER YES 6 APBE]-18 5B NC3 I 02 H2 RECOMBINATION STATION YES 5 APBE118 5C c3830 CONT PANEL C3830 YES 5 E11D 1PBE112 6A DH1517 DH NORM SUCT LINE 1 VLV YES t_

]-PBE1l.27D MU64 05 RC MU PUMP SUCT VLV YES 1 lPBE]-13 3A I,rus057 CTMT H2 PURGE FN 1 IN VLV YES 5 1PBE114 ?F DH64 0 9 MUP DISCH X-CONN VLV YES l_

1PBE1151A cc2 54 5 CC RETURN HDR ]. VLV YES 1 1PBE119OA DBC]. PN 125VDC BATTERY CHARGER YES 1 1PBE1]-94E MU54 2 1 MU CTMT ISO VLV YES 1 1PBE1195A rwoI31 DHR CLR 1 OUT XOVER YES 6 1PBE1197A MREs327 CTRM VENT SYS VACM PMP 1 YES 6

]-PBE1199A rw13 28 CC CRD BOOST PMP SUCT VLV YES 5 APBE1185A MPo381 BA PUMP 1 YES 5 APBE118 8A WETT 11 BA ADD TAI{K ]- HEATER 1 YES 6 APBE118 9A WETT 12 BA ADD TANK 1 HEATER 2 YES 6 SYMBOLS; ACC = ACCEPTABLE 7

Davis Besse Unit l- FIRE HAZARD ANALYSIS REVISfON29;28 REVISION:

DATE DATE t 9/L8

9/2020 APPENDIX C-3 CIRCUIT COORDINATTON EVALUATION

SUMMARY

POWER COORD-SUPPLY CIRCUIT COMPONENT DES CRI PTION INATED NOTES E11D APBE1191A P-3718 MUP 1 MAIN LO PUMP YES 1 APBE1192A P- 3 7l_D MUP 1 AUX GEAR LO PUMP YES l_

Et_t_E 1PBE114 5A IVIVO 54 5B CTMT ISO VLV PENT 73 NO 6 ,21 1PBE114 5A AF3 859 AFWP 1 DISCH TO SG2 NO L ,2L

].PBE114 8A rw4906 CTRM STAI{DBY COND 1 DMPR NO 6 ,21-l_PBEt_16 0A AF5 O8 AFW TO SG1 ISO VLV NO L,21-t_PBEI_187A DH54 LPr/HPr CROSS-TrE VLV NO L,21-E12A 1PBE12 O1A MS0511 CTRM STAI{DBY COND 1 FA}T YES 5

]-PBE12 O2A E12C 4 8 OVAC MCC YES 1 1PBE12 O7A EF12D 4 8 OVAC MCC YES t-

]-PBE12 O8E HVs5 97 BATT RM 4298 ATM DMPR YES t-lPBE]-2 O 9A c21- 1 CTRM EVS FAN 1 YES 1 1PBE12 ]-34 WMBl Power circuit (WMBI) YES 5 t_pBEl_214A' WMB2 Power Circuit (wMB2 ) YES 5 1PBE12 ].54 WMB3 Power Circuit (WMB3 ) YES 5

].PBE]-2164 s33-1 CTRM EMERG A/C UNrr l- YES 1 t-PBE1-2]-74 c71- 1 LV SWGR RM VENT FA}I ]- YES 1

]-PBE1218A sw13 82 AFP 1 SUCT VLV FROM SW YES l_

IPBEt_2l_9A MCo301 EMER VENT FAN ]. YES 5 1PBE122 OA YRFl 48OVAC/12 sVDC RECTIFIER YES 6 ,26 1PBE12 2 1A YRF3 4 EOVAC/ 12 sVDC RECTIFIER YES 6 ,26 lPBE L222F. c73 - t_ AFP RM VENT FA}'T ]- YES l_

1PBE1223A wMBl ,2 ,3 Power Circuit (WMB1 ,2 ,3) YES 5 otr lPBE].22 6A ccs0 95 CC HDR ]- IN ISO VLV YES 1 lPBE]-2 2 7A ccs 0 97 CC HDR 1 RETURN ISO VLV YES 1 t_PBEt_2 32A sw2927 CTRM EVS COND UNIT IN VLV YES l_

1PBE12 3 3A DBC]-P 125VDC BATTERY CHARGER YES t_

lPBE]-2 34A E12E 48OVAC MCC YES t_

1PBE12 3 5A DBC]-N 12sVDC BATTERY CHARGER YES 1

]-PBE12 3 7A MCs0 17 EMER VENT DISCH FAI{ DMPR YES 6

]-PBE12 3 8A MCs056 CROSS-TIE DUCT WORK DMPR YES 5

].PBE123 9A MCs024 FUEL HAND AREA BYPASS VLV YES 5 1PBE124 OA HVS3 O 5A LV SWGR RM 429 DA}4PER YES 1 IPBEt_24 t_A HVs3 O 5B LV SWGR RM 429 DA}4PER YES 1 E12B lPBE]-255A c25-1 EDG RM 1 VENT FA}il 1 YES 1

]-PBE1255A a)q -) EDG RM ]- VENT FA}il 2 YES 1

]-PBE1258A c3621- EMER DG ]- IMMERSION HTR YES 6 1PBE1259A YE]- FDR TO ]-2 OV AC MCC YES 1 1PBE1251A MPI_4 71 EMER DG 1 SOAK PUMP YES 6 1PBE1271A MSt-06A AFPT ]- MS IN X-CONN YES 1 1PEE1273A E12F 4 8 OVAC MCC YES 1

].PBE12 854 c078-1 BATT RM VENT FAN ]- YES 1 APBE]-2574 MPo081 DO XFER PUMP 1 YES l_

APBE]-2 6 7A MP15 9 1 FUEL OIL BOOSTER PLIMP 1 YES 1 APBE].2 8A 6 MP173A DO STRG TK AREA SUMP PMP YES 5 APBE12 6 9A wEt_0 91 DO PMP HSE ELEC UNIT HTR YES 6 APBE12 7 OA x3 02 r_ LTG XFMR DO PMP HOUSE YES 6 APBEIz 8 9A MPt_4 7 3 EDG 1 AC LUBE OIL PUMP YES 5 E12C ]-PBE12 O 5A c99 -2 SW PMP RM EXH FAI{ 2 YES 1 1PBE12 1OA E12D 48 OVAC MCC YES 1 r_PBEr_212A c99 - l- SW PMP RM EXH FAN 1 YES 1 1PBE12 744 MFo 15 1 SW PTIMP STRNR 1 YES 5 1PBE12 7 5A IW13 7 9 SW PUMP STRNR DRAIN VALVE YES 5 1PBE12 7 7A swr_399 SW TSO VALVE TO CLNG WTR YES 1 1PBE12 8 OA EF12C 4 8 OVAC MCC YES 6 1PBE12 8 1A sw2 92 9 SW TO INT STRU VLV r 115 t_

1PBE1282A sw2 93 1 SW TO CLG TOWER MU VLV YES 1_

E12D APBE12 O3A MCo10 0 TRAVELING SCREEN AREA VNT YES 1 SYMBOLS; ACC = ACCEPTABLE I

Davis Besse Unit 1 FIRE HAZARD AI{ALYS IS REVI S I ON REVISION: 29.. 28 DATE DATE  : 9 /tA

9/2020 APPENDIX C.3 CIRCUIT COORDINATION EVALUATION

SUMMARY

POWER COORD-SUPPLY CIRCUIT COMPONENT DESCRIPTION INATED NOTES E12D APBE]-204A MFI_54 01 BACKUP SW PLIMP STRAINER YES 6 APBE12 O 6A I\,ff4590 SW BACKUP PMP DRN VALVE YES 6 E12E 1PBE12 8 6A HP3 2 HPI PMP1 RECTRC VLV NO 3,,2a 1PBE12 92A c31-4 ECCS RM 105 CLR FA}I 4 NO 6 ,21 1PBE12 934 c31-5 ECCS RM ]-05 CLR FATil 5 NO 5 ,21 lPBE L294H MS5 11 MVO61]. PWR CKT NO 6 ,24 lPBE12 95F MU54 19 MU DTSCH VLV NO 7-,21 lPBE L296A P1-97 HPT PMP1 AC LO PMP NO L ,2L E12 F lPBE]-2 984 Pt_95 - 1 EDG FUEL OIL TRANSFER PT]M NO L,2l APBE12 994 MCo111 EMER DG AIR COMPSR 1 YES 6 Et-4 IPBEl_4 0 t_A cr_-1 CAC FA}I 1 LRGST LOAD USED YES 1 E15 ].PBE]-O5A cr_-3 CACS FAI{ 3 I,RGST LOAD YES 1 E16A 1PBE15O 9A E]-68 INCMG CIRC BKR E15B YES 1_

1PBE1511A x5301 480-120V l_.sKVA XFMR YES 6 1PBE1515A xYt_ FEEDER CVTXY1 (85-0272) YES 1 1PBE1617A xY3 FEEDER CWXY3 YES 1 APBE1515A BSW22 0X E.883 / 2 SECURTTY YES 1 E168 t_PBEI_6024 RCl-1 PORV BLOCK VLV NO 1-,21 1PBE1613A x3802 48OV-120V ]..sKVA XFMR NO 5 ,21 EDG - ]- 1PAC1O 1A C1 CT CONTROL POWER (ALT) YES 1,20 EDG- 2 2PAD1O 1A D1 D]- CONTROL POWER YES I ,20 EF12C 3 PBEF]-244 MFot_53 SW PMP STRNR 3 NO 6 ,2A 3 PBEF]-254 sw13 I 1 SW PMP STRNR 3 DRN VLV NO 6 ,21 CPBEF]-23A MPo050 JOCKEY FIRE PUMP YES 6 Ft- 2PBF]-O5A F15 4 8 OVAC MCC YES 1 2PBF1O7A F12B 48OV AC MCC YES 1 2PBF]-]-OA F14 4 8 OVAC MCC YES 1 2PBF]-1]-A Ps5 -2 CS PUMP 2 YES 1 2PBF]-144 F]-2A 48 OVAC MCC YES 1 2PBF115A FI1-A 48 OVAC MCC YES 1 2PBF]-]-84 F].6A 48 OVAC MCC YES 1 BPBF1134' Ft3 48OV AC MCC YES 6 Ft_ t_A 2 PBF11O18 XYF2A FDR TO 24OV AC MCC YES t-2 PBF11O2A IvlREs3 2I CTRM VENT SYS VACM PMP 2 YES 6 2 PBF11O3A IVI\/4907 CTRM STA}IDBY COND UNIT YES 5 2 PBF11O5A ccs095 CC HDR 2 IN ISO VLV YES l_

2 PBF11O8E rvtrJ6422 MU CTMT ISO VLV YES 1 2 PBF1]-O 9A MCO622 H2 DILUTION SYS BLWR 2 YES 5 2PBF]_t_t_04 rwS055 CTMT H2 PURGE LINE 2 \rLV YES 6 2 PBF]_111A MS5O3 SG 2 DRATN LINE ISO VLV YES 6 2 PBFIt_t_24 c75-2 CCW PMP RM VENT FA}I 2 YES 6 2 PBF]-118A AFs 99 AFW TO SG2 ISO VLV YES 1 2 PBF1119A ccs098 CC HDR 2 RETURN ISO VLV YES 1 2 PBF]_t_2 0A CFO 1A CF TK2 ISO VALVE YES 1 2 PBF]-121A IWCFO2A CF TA}'IK 2 SAMPLE VALVE YES 6 2PBF]-123A IWCFOSA CF TA}'IK 2 VENT VAIVE YES 6 2PBF11-24F. MS107 AFPT 2 MS IN ISO VLV YES 1 2PBF1]-254 rw2735 PRZR SPRAY LINE ISO VLV YES 5 2P8F11,26}. RCz 3 9A PZR VAPOR SPACE SMPL LINE YES 1 2PBF]_1-27P. RCz 3 98 PZR LTQUID SAMPLE VALVE YES l_

2PBFt-l_28A I"1V024 0B RC PRZR SA}4PI,E VLV 2 YES 6 SYMBOLS; ACC = ACCEPTABLE 9

Davis Besse Unlt. 1 FIRE HAZARD ANALYSIS REVISION29:28 REVISION:

DATE DATE  : g/te

9/2020 APPENDIX C.3 CTRCUIT COORDINATION EVA],UATION SUM}4ARY POWER COORD -

SUPPLY CIRCUIT COMPONENT DES CRI PTION INATED NOTES F11A 2PBF]-13 OA DH11 DH NORM SUCT LINE VLV YES 1 2PBF113 ]-A s33-2 CTRM EMERG A/C UNIT 2 YES 1 2PEF1132A sw2 92 I CTRM EVS COND UNIT IN VLV YES t_

2PBF1133A Ffft_3 3I CC CRD BOOST PMP SUCT VLV YES 5 2PBF113 7A F1]-B FEEDER TO MCC F].1B YES 1 2 PBF114 OA I\,Iv2000 CTMT ISO VALVE PENET 714 YES 6 2PBF1143A F11C AUTO BKR REMOVED YES 1r 8 2PBF1144A rw2 0 02 CTMT ISO VAIVE PENET 73A YES 5 2 PBF114 6A F1lD FEEDER TO MCC F].]-D YES t_

2 PBFt_t_4 9A czt-2 CTRM EVS FA}il 2 YES 1 2 PBFt_l-8 0A I\{\/s075 CTMT VACWM RELIEF VALVE YES 6 2 PBFI_t_8l-A rws075 CTMT VACTIUM RELIEF VALVE YES 6 2PBF1182A rws077 CTMT VACUIIM RELIEF VALVE YES 6 2PBF1183A IvIVs078 CTMT VACUTIM REI,IEF VALVE YES t) 2PBF1184A IvIVs079 CONTROL VACWM RELTEF VLV YES o 2PBF1].8 9A F1]-E FEEDER TO MCC F11E YES 1 BPBF1113A MCos62 CTMT RECIRC FAI{ 2 YES 5 BPBF]-].144 x4 9Dl_ CTMT LTG XFMR YES 6 BPBF]- ]-]- 5A BSWX79D1 CTMT LTG DfSC SWCH YES 6 BPBF1116A x57D1 CTRM & AUX BLDG LTG XFMR YES 6 F1]-B 2PBF113 BA IVIV2 01-28 CTMT NORM SUMP TSO VLV NO 6 ,27.

2PBF114 7A cs153 1 CS PUMP OUT VLV NO l,2a 2PBF114 8A DHO 7A BWST OUT VLV NO L,2t 2PBF1158A CC14 O7B CC OUT ISO VLV NO 1, 21 2PBF1159A cct_4l_18 CC IN ISO VLV NO l,2l 2PBF115OA Ivn/O624B CTMT ISO VALVE PENET 72 NO 5 ,21 2PBF117 6A Ivn/15 5 7B CC IN ISO VALVE 2 TO CRD NO 6 ,21 2PBFt_t_864 rws252 CTRM EMER 1/I\IT FN 2 IN \rLV NO 6 ,27-2PBF1188A MS1O7A SG 1 TO AFPT 2 NO 1-,21 F11C 2CBF114 18 HPO2B HP IN'JECT VLV YES 1 2 PBFl l-29A DH1518 DH NORM SUCTION VLV YES 1 2PBF1134A DH27 34 DH BWST SUCTION VLV YES 1 2PBF113 6A DHO ]-A LP IN.]ECT VLV YES 1 2PBF113 9A HPO2A HP IN.JECT VLV YES 1 2PBF1151A Ivn/s037 CTMT H2 DTLUT OUT ISO VLV YES 6 2PBF]-1774 sw13I3 AFP 2 SUCTION VLV YES t_

BPBF]-]-67A P- 3 728 MUP MN OIL PTIMP YES t_

BPBF]-]-68A P- 3 72D MUP AUX LUBE OIL PLI}4P YES l_

F11D 2PBF1t_l_7A rwo 5 01 MN FW 2 ISOLATION VALVE YES 5 2PBF1142A DHO 9A CTMT EMERG STMP VLV N/A 5 ,11 2PBF]-14 5A wF5 0 H2 DILUT FLT HTR YES 5 2PBF1153A MP8 92A ECCS SUMP PUMP 2A YES 5 2PBF]-1544 MP8 928 ECCS SUMP PUMP 28 YES 6 2PBF1157A c31- 3 ECCS RM ]- ]-3 CLR FAN 3 YES 6 2PBF1151A ccz649 CC RETURN HDR 2 VLV NO 1 ,24 2PBF1]-54A IvffS 058 CTMT H2 PURGE FN 2 IN \rLV NO 6 ,21 2PBF1178A rw544l_ ECCS RM 115 HVAC ISO VLV NO 5 ,21 2 PBF117 9A I!{V5442 ECCS RM 115 HVAC ISO VLV NO 5 ,21 2PBF1185A IvI\/o830 DHR CLR 2 OUT XOVER NO 6 ,21 2 PBFl18 7A DBCz PN FDR TO BAT CHGR DBC2PN NO 1 ,24 BPBF11O7A Ivflilvlul-28 MU FLT 2 IN VLV YES 6 BPBF1159A MPo 3 82 BA PUMP 2 YES 5 BPBFl171A wET72 1 BA ADD TAIVK 2 HEATER 1 YES 5 BPBF]-1.72A WETT 22 BA ADD TAI'IK 2 HEATER 2 YES 6 F11E 2 PBF]-t_92A c31- 1 ECCS RM 115 CLR FAN 1 NO 6 2t 2 PBF]_r_93A c31- 2 ECCS RM ]-]-5 CLR FAI{ 2 NO 5 2T 2 PBF]-1944 HP3 1 HPI PMP 2 RECIRC VLV NO 1 21-2 PBF]-1954 DH53 LPI/HPT CROSS-TfE VLV NO 1 2t SYMBOLS; ACC = ACCEPTABLE l_0

Davis Besse Unit 1 FIRE HAZARD ANALYSIS REVISfON REVISION: 29t28 DATE DATE  ; 9 /te

9/2020 APPENDIX C-3 CIRCUIT COORDINATION EVALUATION SUMIY1ARY POWER COORD-SUPPLY CIRCUIT COMPONENT DESCRIPTION INATED NOTES F1]-E BPBF1195A F11F 48OVAC MCC F]-1F YES 5 F12A 2 PBF12 O 1A 4F3871 AFWP 2 DISCH TO SG1 YES 1 2PBF12 O2A F]-2C AUTO BKR REMOVED YES 1r 8 2 PBF12 O 3A MCo3 02 EMER VENT FAI{ 2 YES 6 2PBF12 O4A cr_3 3 LV SWGR RM VENT FAN 2 YES l_

2PBF12O5A vt5-4 AFP RM VENT FAI{ 2 YES l_

2PBF]-208F MU64 0 I MU CROSS CONNECT ISO VLV YES t-2PBF]-209A DBC2 P BATTERY CHARGER DBC2P YES 1 2PBF121OA HVs598 BATT RM 428A ATM DMPR YES l_

2PBF1212A DBC2N BATTERY CHARGER DBC2N YES 1-2PBF121-3A wLBt- t_ Power Circuit (WLB11) YES 5 2PBF12 144 WLB12 Power Circuit (WLB12) YES 5 2PBF12 ].54 WLB13 Power Cj-rcuit (WLBI-3 ) YES 5 2 PBF12 1?A WLBl1 ,2,3 PWR CKT PZR HTR YES 5 ,25 2 PBF12 184 MCs 0 18 EMER VI{T FAN DISCH DMPR 2 YES 6 2 PBF122 OA YRF2 4 8 oVAC/12 sVDC RECTfFTER YES 5 2 PBF122 1A YRF4 4 I oVAC/12 SVDC RECTTFTER YES 6 2PBF1223A swl3 67 CAC 2 TN ISO \rLV YES l_

2PBF]-2244 sw13 6I CAC 3 IN ISO VLV YES 1 2PBF1225A MC5057 CROSS TIE DUCT WORK DMPR YES 5 2PBF]-2 2 6A Ivfvs025 FUEL HAIilD AREA BYPASS VLV YES 5 2PBF]-227 A cc14 0 9 LTDWN CLR ]- CC WTR IN VLV YES l_

2 PBF12 2 8A cc14 10 LTDWN CLR 2 CC WTR IN VLV YES 1 2PBF122 9A MS0512 CTRM STATilDBY COND 2 FA}il YES 6 2 PBF123 OA P195 -2 EDG FUEL OIL TRANSFER PtM YES 1 2 PBF123 IA P198 r 1 HPI PMP 2 AC LO PMP YES 1 2 PBF12 3 7A MUO lA LETDOWN CLR 1 IN VLV YES 1 2 PBF12 3 8A MUO 1B LETDOWN CLR 2 IN VLV YES 1 2 PBF12 3 9A HVS 3 14A LV SWGR RM 428 DAMPER YES 1 2PBF12 85LT RC2OO PZR SMPL CTMT \N$T HDR VLV YES t_

F]-28 2PBF]-2 55A c25-3 EDG RM 2 VENT FA[il 3 YES t_

2PBF1255A c25-4 EDG RM 2 VENT FAI{ 4 YES 1 2PBF1258A \-JtJ 44 EMER DG 2 IMMERSION HTR YES 6 2PBF1259A c78-2 BATT RM VENT FA}I 2 YES 1 2PBFI26OA IvIVRCO 2 PRZR 1 SPRAY I,INE VLV YES 6 2PBF1251A MPl.4'7 2 EMER DG 2 SOAK PUMP YES 6 2PBF]-2624 4F3872 ,A.FWP 2 DISCH TO SGz YES 1 2PBFl-2704 YF]- FEEDER TO 12 OV AC MCC YES l-BPBF1257A MPo 082 DO XFER PUMP 2 YES 5 BPBFT2 534 MC0l-l-2 EMER DG AIR COMPSR 2 YES 5 BPBF]-2 674 MP15 92 FUEL OIL BOOSTER PUMP 2 YES 6 BPBFl2 58A MP173B DO STRG TK AREA SUMP PMP YES 6 BPBF]-2 6 9A wE1 0 92 DO PMP HSE ELEC UNIT HTR YES 6 BPBF1z 8 9A MP14 74 EDG 2 AC LUBE OIL PTIMP YES 6 F12C 2 pBF12 744 MFo t_52 SW PUMP STRNR 2 YES 6 2PBF12 7 5A swt-3I0 SWP 2 STRN DRN VLV YES 6 2PBF]-27 7A sw13 95 TPCW HX IN HEADER ISO VLV YES l_

2PBF12 7 8A F12D FDR BKR TO MCC F12D YES 1 2PBF12 8 OA EF12C 48 OVAC MCC YES 5 2PBF12 8 1A swz 93 0 SW TO INT FOREBAY VLV YES 1 2PBF1282A sw2 932 SW TO CQLLECT BASIN VLV YES 1 F12D 2 PBF121]-A c99-3 SW PMP RM EXH FA}I 3 NO L ,2L 2 PBF]-2 3 5A c99-4 SW PMP RM EXH FA}I 4 NO L ,21 F15 2PBF]-O5A cr_-3 CACS FAN 3 LRGST LOAD YES 1 F15A 2PEF1516F MU642 0 MU32 BYPASS VLV YES 1 2PBF16].7D MU3 97 1 RC MU PUMP SUCT VLV YES l_

SYMBOLS; ACC = ACCEPTABLE 11

Davis Besse Unit 1 FIRE HAZARD A}TALYSIS REVfSION29:28 REVISION:

DATE DATE  : S/te

9/2020 APPEDIDTX C -3 CTRCUTT COORDTNATION EVALUATION

SUMMARY

POWER COORD-SUPPLY CIRCUIT COMPONENT DESCRI PTION INATED NOTES F]- 6A 2PBF162 OA F168 48OVAC MCC YES 6 2PBF1522A x53 02 4I0 - t_2 0v t_ . sKVA XFMR YES 6 2PBF1524A xY2 FEEDER CVTXY2 ( 86- 027 2) YES 1 2PBF1525A xY4 FEEDER CVTXY4 ( 86- 027 2) YES t_

F7 BPBFTO3A MCr_3 90 TNST AIR COMP YES orzl BPBFTO5A Ft-3 48OV AC MCC YES 6 BPBFTOTA F71_ 48OV AC MCC YES L,27 F71 BPBFT 1O5A c34 10 EIAC CLOSED COOLING LOOP YES 5 BPBFT]-]-4A P242 -t I\4DFP AUX LUBE OIL PUMP YES 1 BPBFT ]-]-7A Y3401 DIST PANEL Y34O]- NO 6 ,22 BPBFT 118A 54058 ROOM AIR COND ROOM 3348 YES 6 RC3702 (zcv214A) VARIOUS RECEPTACLE ACC '7,L6 RC3 7 04 ( 1CY117A) VARIOUS RECEPTACLE ACC 7 ,15 RC3 7 05 ( r_cY1r-78) VARIOUS RECEPTACLE ACC 7,LG RC4 5 04 (1CDr_P2 0B ) VARIOUS RECEPTACLE YES 7 RC4 6 05 (2CD2P2 0C ) VARIOUS RECEPTACLE YES 7 RC4 6 06 2 CVRC2 J RC2A RC2A PORV (2PD2N]-7A) ACC t,29 RC4801 ( 1PD1P12A) VARIOUS RECEPTACLE YES 1 Yt_ lCYt_03A c57628 PROCESS & RAD MON CABINET YES )6 t_cYl_044 c570 I CTRM EMERGENCY HVAC CONTR YES 1 )6 l_cYt_048 c57 t4 CTRM EMERGENCY HVAC CONTR YES 1 )5 r_cYr_06A c5752E RPS - ]- CABINET NI.NI2 YES 1 o )tr l_cY1_074 c57 52D SFAS CH. 1 LOGIC PA}-IEL YES 1 o lCYt-0 8A c3530 CONT POWER TO AUX SD PAI{E YES 1 ,3 ,26 1CY1O 8B c3628 CONT POWER ESS METER HPI YES 1 tz 6 1CY11OA D1 D1 CONTROL POWER YES 2 tLa 6 1CY11OB RC4604 NON SSD RELAYS YES ) tL

,5 5

].CYt-124 cs 716 CTRM IND LTS HPI FLOW YES 1 1-CY1- l_2 B cs7538 POST ACC MON YES 7 t4 6 t-cYt_t-2c cs708 I\4AIN CTRL BOARD YES 1 tz 5 t_cY1l_ 3A CFPO3Q BWST INST HEAT TRACING YES 6 )5 l_cY114A RC3701 RELAY CABINET RC37O1 YES 5 ,2 6 l-cY115B c57514 SFRCS CH. 1 LOGIC PANEL YES 1 o ,26 CONT POWER SV IND LIGHTS

.)

1CY115A C57L7 YES 5 6 lCYr-174 RC3704 NON SSD RELAYS YES 7 1La 6 lCYl-178 RC3705 RELAY CABTNET YES 7 a6 lCYl17C CDE-118-1 NON SSD CONT PWR YES 7 t4 6 ICY117D CDE - 118- 2 CONT POWER DH]-2 INTLK YES 5 a6 1CY118A PDYsO O OB PDYS O O OB YES 2 6 1CY118B PDYsO O OC PDYs O O OC YES 2 tL 6 1CYl18C TY5443 TYS44 3 YES 2 rL-l 6

.\

1CY118D c57844 ARTS CABINET C57844 YES 2 SL 6

.)

1CY119A c3801 CTMT HYDROGEN SYS PANEL YES 5 6 1CY12 OA RC3 60 7 RELAY CABINET RC3607 YES 2 tz 6 1CY12 OB RC3 60 1 RELAY CABINET RC3501 YES 2 rz 6 lCYr-2 0C RC3605 RELAY CABINET RC3605 YES 2 t4 5 1CY12 OD YL1 YL1 YES 4 ) 5 lCYt-214 cs762A SFRCS CH. 3 RELAYS YES 1 q 1CY122A CFPPlOQ F/P PANEL CFPPIOQ YES 6 ,25 1CY12 2B CFPP1TQ F /P PANEL YES 5 ,26 1PY1O5A c351s EDG1 - ]- PANEI, (NORM) YES 1 ,25 ACY1VMA E.16277 REMOTE VOI,TMETER AT C57].5 YES 6 ,26 SYMBOLS; ACC = ACCEPTABLE L2

Davi-s Besse Unit 1 FIRE HAZARD ANALYSIS REVISION29:28 REVISION:

DATEDATE  : s /ta

9/2020 APPENDIX C-3 CIRCUIT COORDINATION EVALUATION STIMMARY POWER COORD -

SUPPLY CIRCUIT COMPONENT DESCRI PTION INATED NOTES Y]-A 1CY1O3AA L1T4518 CTMT NOR SUMP LVL YES 2 ,25 1CYIO4AA c3645 CONT POWER TO AUX FW CONT YES L ,26 1CY1O7AA c57 99 POST ACCIDENT MONITORING YES 1,,25 1CY1O8AA NY5874B NEUTRON FLUX MONITORING C YES I ,26 lCY1O8AB c4808 NEUTRON FLUX MON CAB YES 5 ,26

]-CY1O 9AA cs7 99 POST ACCTDENT MONITORING YES 1-,26

]-CY1]-5AA c57 538 POST ACC MON YES 2 ,26 t_cYt_410 5A c57 53A POST ACCIDENT MONITIORTNG YES l, I ,26 1PY]- 1]-AA cs7 52G SAFETY GRADE INST CAB YES 2 ,26 1PY112AA c5603 VENT STACK RAD MON YES 2 ,26 1PY113AA RC480r_ RELAY CABINET RC4 8 O ]- YES 2 ,25 1PY1 14AA RE4597AA CTMT NORM RNG RAD MON YES 2 ,26 1PY1]-7AA RE4 5 98AA STA VENT EFF HI RAD MON YES 2 ,25 1PY1].844 RIC4598AA-2 STA EFF RAD MON LOC DISP YES 2 ,26 1PY12 ].AA RE4598AB STA VENT EFF HI RAD MON YES 2 ,26 ACY1AVI\44 81627 7 REMOTE VOLTMETER AT C5715 YES 2 ,26 Y2 2CY2 O3A c57 558 PROCESS & RAD MON CABINET YES 2 ,40 2CYz O4A c57 r_5 CTRM EMERGENCY HVAC CONTR YES 1 ,2 ,26 2CY2 O4B c5709 CTRM EMERGENCY HVAC CONTR YES 1 n ,26 2CY2 O6A cs7 55E RPS-2 CABINET NT YES 1 o 26 2CY2 O7A cs7 55D SFAS CH.2 LOGIC PANEL YES 1 ,9 26 T 2CY2 8A c3530 CONT POWER TO AUX SD PA}ilE YES 1 ,3 I 26 1 )5 O

2CYz O 8B c3629 CONT POWER ESS METER HPI YES 2CYz 1OA D2 BREAKER CONT POWER ALT YES 6 tz 6 2CY2 114 c57 L6 CTRM IND LTS HPI FLOW YES t_

n6 2CY2 118 c5705 CONT POWER IND LTS yEs 7 ,z-) 6 2CY21r-C cs709 CTRM IND LTGHTS, DIXSONS YES 1 tz 6 CONT POWER SV IND LIGHTS

.)

2CY2]-2A c571-7 YES 5

.l 6

2CY2LzB c5755A lND LIGHTS YES 7 6 2Cv2:l-4A RC3 7 02 RELAY CABINET YES 5 ) 6 2CYz 148 RC4605 NON SSD RELAYS YES 5 t4 6

.)

2CY2].4C CDF- 114- 1 CONTROL DISCONNECT TRANSF YES 5 6 2CY2 158 c57 92A SFRCS CH.2 LOGIC PAI{EL YES t_ o

.) I 26 zCY2T5A RC3 7 05 RELAY CABINET YES 5 5

2CY2 168 RC3 7 03 NON SSD RELAYS YES 5 o 2Cv21-6C WFSO H2 DILUT FLT HTR YES 5 t4 5

.}

2CY217A PDYsO 148 FPDY5O 14B YES 6 2Cv21-78 14C lj PDYSO FPDYsO 14C YES 6

.)

zcv217 C FTYs444 FTY5444 YES tz 6 2Cv21,7D c57848 ARTS CABINET C57848 YES n

,z 6 2CY218A c3801 CTMT HYDROGEN SYS PAI{EL YES .4 ,'4 6 2CY2 L9A RC3508 RELAY CABINET RC36O8 YES 2 t4 6 2CY2 198 RC3602 RELAY CABINET RC36O2 YES 2 t4 6 2CYz19C RC3505 RELAY CABINET RC36O5 YES z ,2 6

.) .)

2CY2 r-9D YL2 ESSENTIAI LTG ROOM 323 YES 5 2CY22 OA cFP04Q BWST INSTR HEAT TRACING YES 5 t4 5 2CY2 2l_B c57 92 SFRCS CH 4 RELAYS YES 1 o I 26 2CY222A cFPPlr_Q F/P PANEL CFPP11Q YES 6 )6 F/ P

.)

zCY2228 CFPP]-8Q PANEL CFPP r- I Q I. 11D 2 6 2PYzO5A c3 5l-5 EDG1-2 PA}IEL LTGHTS YES 1 ,z 6 BCYz\IMA 8t5282 REMOTE VOLTMETER AT C5715 YES 6 FJ 6

Y2A zcv2 0 3AA LIT4 5 17 CTMT STIMP LEVEL YES 5 ,26 zCY2 O4AA c4625 CONT PWR AUX FW CONT PNL I, -ED 1, 15 zCY2 O 7AA cs7 98 POST ACCIDENT MONITORING YES 1,26 zcv2 0 8AA NYS 87 5B NEUTRON FLUX MON YES t ,26 2CY2 O 8AB c4602 NEUTRON FLUX MON YES I ,25 zcv2 0 944 c57 98 POST ACCIDENT MONITORING YES 5 ,26 zcv2 15AA cs755A IND LfGHTS YES 6 ,25 2CY2A2O5A cs7s5G POST ACCIDENT MONITIORING YES I ,9 ,26 2PY21]-AA c5 7 55H SAFETY GRADE INSTR CAB YES 6 ,26 SYMBOLS; ACC = ACCEPTABLE 13

Davr_s uesse unl_E l- FIRE HAZARD ANALYSTS REVfSION REVISION: 29t28 DATE DATE  : g/t8

9/2020 APPEIIDIX C.3 CIRCUIT COORDINATTON EVALUATION STIMI4ARY POWER COORD-SUPPLY CIRCUIT COMPONENT DESCRIPTION INATED NOTES zPY2 12AA cs503A VENT STACK RAD MON YES 6 ,26 zPY2 13AA RC4505 DC CONT PWR TO PORV YES 6 ,26 zPY2 17AA RE45 98BA STA VENT RAD MON ( .]T5 3 5 3 ) YES 6 ,26 zPY2 18AA RIC4 5 98BA- 2 STA EFF RAD MON (LOC DSP) YES 6 ,26 zPY2 1 9AA RE4597BA CTMT NORM RNG RAD MON YES 6 ,26 2Pv22 1AA RE4598BB STA VENT RAD MON ACC RNG YES 6 ,25 Y3 3CY3 O7A c5763D SFAS CH. 3 LOGIC PAIIEL YES I ,26 3CY3 O8A c5763F RPS_3 CABINET YES 6 ,26 3CY3 O 9A RC3603 RELAY CABINET RC36O3 YES 5 ,26 3CY3 1OA CFPO5Q BWST HEAT TRACING YES 6 ,26 3CY3 12A cs784C ARTS CABINET YES 5 ,26 3CY3 13A c5750A CTRM CABINET YES 2 ,26 3 PY3 O5A c3515 EDGI.1 PANEL (NORM) YES 5 ,26 ACY3\TMA Er52 I 1 REMOTE VOLTMETER AT C5715 YES 5 ,26 Y4 2CY4l_9A cs705 CONT POWER IND LTS YES 5,9, 26 4CY4 O7A c5755D SFAS CH 4 I,OGIC PANEL YES 7- ,26 4CY4 O8A c5755F RPS-4 CABINET YES 6 ,25 4CY4 O 9A cs754A SEISMIC RECORDING SYS YES 6,26 4CY4 1OA RC3 504 RELAY CABINET RC3504 YES 5 ,26 4CY411A CFPO 5Q BWST HEAT TRACE CABINET YES 5 ,26 4CY4 12A c57 84D ARTS CABINET C5784D YES 5 ,26 4CY4 14A c5756G CTRM CABTNET YES 4r40 4PY4O5A c3 6 r_6 EDG1-2 PAI'IEL LIGHTS YES 5 ,26 BCY4\IIvlA 81527 8 REMOTE VOLTMETER AT C5715 YES 6 ,26 YAU ACYAU1 OA JTs7 07 ,JUNCTTON BOX, C5757A YES 5 ACYAU13A c5754K EPF MULTIPLEXER CABINET YES 5 ACYAU14B ,JT57 08 ,fUNCTION BOX YES 6 ACYAU2 OA c4503 CRD BKR B SHUNT TRIP CKT YES 6 ACYAUz 2A CL7 02 PA}IEL YES 5 ACYAUz 4A c4r_0r_ H2 DETECTOR CABINET YES 5 ACYAUz 7B c5757D MFPT 1-1 CTRL YES 5 ACYAU2 8A c57 54D ENVIRONMENTAL MONTTOR SYS YES 6 ACYAUz 9A R3004 RACK YES 6 ACYAUz 98 R3002 RACK YES 6 ACYAUz 9C R3003 RACK YES 6 ACYAUz 9E NAIT585 9 RACK YES 6 ACYAU2 9F R2022 RACK YES 6 ACYAU3 OA cs755E PROCESS & RADIATION MON YES 6 ACYAU3 2A c5715 DC & INSTR AIR BKR TND YES 6 ACYAU3 3.4, c67 LO - L2 MOTOROLA TRANSCEIVERS YES 6 ACYAU3 4A c3002 DIESEL FfRE PUMP CTRL YES 5 ACYAU3 5A RC3717 RELAY CABINET YES 6 ACYAU3 58 RC3 7 15 RELAY CABINET YES 5 ACYAU3 5C RC17 5 0 RELAY CABINET YES 6 ACYAU3 5A RC3005 RELAY CABTNET YES 5 ACYAU3 5B RC3003 RELAY CABINET YES 6 ACYAU3 5C RC3 00 t_ RELAY CABINET YES 6 ACYAU3 ?A RC4 3l_t_ RELAY CABTNET YES 6 ACYAU3 8A c3 610 RELAY CABINET YES 6 ACYAU3 9A cs7 22 MAIN CTRL PAI{EL YES 6 ACYAU4 OA RC24 04 RELAY CABINET YES 6 ACYAU4 OB F-2204 LOCAL AI{NUNCIATOR YES 5 ACYAU4 1A RC2 82s RELAY CABINET YES 6 ACYAU4 ]-B R1801 RACK YES 6 ACYAU4 2A JT4722 FIRE PROTECTION (C5401) YES 6 ACYAU4 3A c5 718 MATN CTRL BOARD YES 6 ACYAU4 4A c57 2L FEEDWATER PAT{EL YES 6 ACYAU4 5A ZETRON RECEPTACLE YES 6 ACYAU4 6A c5765F PROCESS & RADIATION MON YES 6 SYMBOLS; ACC = ACCEPTABLE 14

Davis Besse Unit 1 FIRE HAZARD AI{A],YSIS REVISION29:28 REVISION:

DATE DATE z 9/tB

9/2020 APPEIilDIX C.3 CfRCUIT COORDINATION EVALUATION SLIMIVIARY POWER COORD-SUPPLY CIRCUIT COMPONENT DESCRIPTION fNATED NOTES YAU ACYAU4 5B c5781 PROCESS & RADIATION MON YES 5 ACYAU4 7A c571,9 IVIATN CTRL BOARD YES 5 ACYAU4 8A VARIOUS RECEPTACLE YES 6 ACYAU4 8B YATSs7 O 1 COMPUTER EQUIP. ATS YES 6 ACYAU4 9A c5708 }4ATN CTRL BOARD YES 5 ACYAU4 98 cs7 05 MAIN CONTROL BOARD YES 5 ACYAUS OA c5772C PLAI{T PROCESS COMPUTER YES 6 ACYAUs OB cs772F PLAT{T PROCESS COMPUTER YES 6 ACYAUs 2A cs751C LIOP 2 FA}iS YES 5 ACYAUS 3A cs72 0 MAIN CTRL BOARD YES 6 APYAUO 2A Y4501 FUSE PA}IEL Y4501 YES 6 APYAUO 4A c5755A PROCESS & RADIATTON MON YES 6 APYAUO 5e' Y360r- FUSE PAI{EI-, Y3501 YES 6 APYAUO 7A YATS4 6O ]- - COMP. MULTIPLEXOR ATS YES 6 APYAUO 9A c57584 BUFFER CABINET YES 5 APYAU]-]-A uso 0 MAIN COMMUNICATTON BOX YES 6 APYAU12A cs7s8c MISC ELECTRONTC CTRL CAB YES 5 APYAU15A cs7s8B DIAGNOSTIC CABINET YES 6 APYAU1 5A VARIOUS ^ RECPT. COMP. RM PRINTERS YES 6 APYAU1TA cs7 7 28 PLANT PROC. COMPUTER YES 5 APYAU1SA c57 7 2A PLANT PROC. COMP. , C577 0A YES 6 APYAU2 5A c57 6 0D CONT POWER NNIY YES 1 YBU BCYBUI9A c17 A2 PANEL YES 6 BCYBU2 OA c4301 GEN VOLT REG CABINET YES 6 BCYBU2 1A c3303 GEN COOL SYS CABINET YES 6 BCYBU2 3A cs7 15 DC 6. INSTR ATR BKR IND YES 6 BCYBU2 3B cs7 18 MAIN CTRL BOARD YES 6 BCYBU2 4A c4801X CRD PIP OB LTGHTS YES 6 BCYBU2 6A c57 648, C VIBRATTON MON 2Y89OOA,B YES 6 BCYBU2 7A c4505 CRD BKR A SHUNT TRIP CKT YES 5 BCYBU2 9A c5?54K ' RECPT. PLA}ilT COMP. ROOM YES 5 BCYBU3 OA c5301 CROSS WATT HR METER CAB YES 5 BCYBU3 1A c572 0 MAIN CTRL BOARD YES 6 BCYBU3 18 c5 719 - PLANT PROC. COMP., C57578 YES 6 BCYBU3 3A c5757C TURBTNE INSTR CABTNET YES 6 BCYBU3 5A c5757D MFPT ]--1 CTRL YES 6 BCYBU3 6A c34 04 STATION AIR COMPRESSOR 2 YES 6 BCYBU3 7A RC44 10 RELAY CABINET YES 6 BCYBU3 7B RC44 0 1 RELAY CABINET YES 6 BCYBU3TC RCz3 04 RELAY CABINET YES 6 BCYBU3 7D FLI37O9 FLOW IND]CATOR YES 6 BCYBU3 8A c5754H LOAD FREQ CTRL YES 5 BCYBU3 9A c57 23 DIGITAL FREQ IND YES 6 BCYBU4 1A RCt_751- RELAY CABINET YES 5 BCYBU4 2A RC3005 RELAY CABINET YES 6 BCYBU4 2B RC3004 RELAY CABINET YES 6 BCYBU42C RC3002 RELAY CABINET YES 5 BCYBU4 3A RC3718 RELAY CABINET YES 5 BCYBU4 3B RC37t_5 RELAY CABINET YES 5 BCYBU4 4A c3 6l_l_ RELAY CABINET C36]-]. YES 6 BCYBU4 5A cs122 MAIN CTRL PAIIEL YES 6 BCYBU4 7A RC2825 RELAY CABINET YES 5 BCYEU4 8A cs754B VIBRATION ACOUSTIC MON YES 6 BCYBU4 8B cs785 CABINET YES 6 BCYBU4 9A c57 2t FEEDWATER PANEL YES 5 BCYBUs OA c57518 ICS Y BUS FEED (ALT ) YES 5 BCYBUs2A c5754F STATION AI{NUNCIATOR YES 6 BCYBUs2B JTS7 12 COMM DATA TRANSMISSION YES 5 BCYBUS 3A cs708 MAIN CTRL BOARD YES 6 BCYBUS 38 c5706 MAIN CONTROL BOARD YES 6 BPYBUO 2A L5 /b5L PROCESS & RADIATION MON YES 5 SYMBOLS; ACC = ACCEPTABLE t_5 See page 15a

Davis Besse Unit 1 FIRE HAZARD ANALYSIS REVISION29:28 REVISION:

DATE: 9/2020 DATE  : 9/18 APPENDIX C-3 CIRCUIT COORDINATION EVALUATION SUJv1MARY POWER COORD SUPPLY CIRCUIT COMPONENT DESCRIPTION INATED NOTES YAU ACYAU46B APYAU19A C5781 C5775 PROCESS PLANT & RADIATION COMPUTER CABINET MON C5775 YES YES 66 ACYAU47A APYAU25A C5719 C5775 MAIN COMPUTER PLANT CTRL BOARD CABINET C5775 YES YES 66 ACYAU48A VARIOUS RECEPTACLE YES 6 ACYAU48B YATS5701 COMPUTER EQUIP. ATS YES 6 ACYAU49A C5708 MAIN CTRL BOARD YES 6 ACYAU49B C5706 MAIN CONTROL BOARD YES 6 ACYAUS0A C5772C PLANT PROCESS COMPUTER YES 6 ACYAUS0B C5772F PLANT PROCESS COMPUTER YES 6 ACYAU52A C5751C LIOP 2 FANS YES 6 ACYAU53A C5720 MAIN CTRL BOARD YES 6 APYAU02A Y4501 FUSE PANEL Y4501 YES 6 APYAU04A C5765A PROCESS & RADIATION MON YES 6 APYAU0SA Y3601 FUSE PANEL Y3601 YES 6 APYAU07A YATS4601- COMP. MULTIPLEXOR ATS YES 6 APYAU09A C5758A BUFFER CABINET YES 6 APYAUllA usoo MAIN COMMUNICATION BOX YES 6 APYAU12A C5758C MISC ELECTRONIC CTRL CAB YES 6 APYAUlSA C5758B DIAGNOSTIC CABINET YES 6 APYAU16A VARIOUS" RECPT. COMP. RM PRINTERS YES 6 APYAU17A C5772B PLANT PROC. COMPUTER YES 6 APYAU18A C5772A PLANT PROC. COMP.,C5770A YES 6 APYAU26A C5760D CONT POWER NNIY YES 1 YBU BCYBU19A C1702 PANEL YES 6 BCYBU20A C4301 GEN VOLT REG CABINET YES 6 BCYBU21A C3303 GEN COOL SYS CABINET YES 6 BCYBU23A C5715 DC & INSTR AIR BKR IND YES 6 BCYBU23B C5718 MAIN CTRL BOARD YES 6 BCYBU24A C4801X CRD PIP 0% LIGHTS YES 6 BCYBU26A C5764B,C VIBRATION MON 2Y8900A,B YES 6 BCYBU27A C4606 CRD BKR A SHUNT TRIP CKT YES 6 BCYBU29A C5754K' RECPT. PLANT COMP. ROOM YES 6 BCYBU30A C5301 CROSS WATT HR METER CAB YES 6 BCYBU31A C5720 MAIN CTRL BOARD YES 6 BCYBU31B C5719- PLANT PROC. COMP., C5767B YES 6 BCYBU33A C5757C TURBINE INSTR CABINET YES 6 BCYBU35A C5757D MFPT 1-1 CTRL YES 6 BCYBU36A C3404 STATION AIR COMPRESSOR 2 YES 6 BCYBU37A RC4410 RELAY CABINET YES 6 BCYBU37B RC4401 RELAY CABINET YES 6 BCYBU37C RC2304 RELAY CABINET YES 6 BCYBU37D FLI3709 FLOW INDICATOR YES 6 BCYBU38A C5754H LOAD FREQ CTRL YES 6 BCYBU39A C5723 DIGITAL FREQ IND YES 6 BCYBU41A RC1761 RELAY CABINET YES 5 BCYBU42A RC3006 RELAY CABINET YES 6 BCYBU42B RC3004 RELAY CABINET YES 6 BCYBU42C RC3002 RELAY CABINET YES 6 BCYBU43A RC3718 RELAY CABINET YES 5 BCYBU43B RC3716 RELAY CABINET YES 5 BCYBU44A C3611 RELAY CABINET C3611 YES 6 BCYBU45A C5722 MAIN CTRL PANEL YES 6 BCYBU47A RC2826 RELAY CABINET YES 6 BCYBU48A C5764B VIBRATION ACOUSTIC MON YES 6 BCYBU48B C5786 CABINET YES 6 BCYBU49A C5721 FEEDWATER PANEL YES 6 BCYBUS0A C5761B ICS Y BUS FEED (ALT) YES 6 BCYBU52A C5754F STATION ANNUNCIATOR YES 6 BCYBU52B JT5712 COMM DATA TRANSMISSION YES 6 BCYBU53A C5708 MAIN CTRL BOARD YES 6 BCYBU53B C5706 MAIN CONTROL BOARD YES 6 BPYBU02A C5765C PROCESS & RADIATION MON YES 6 SYMBOLS; ACC ACCEPTABLE 15a

Davis Besse Unit 1- FTRE HAZARD A}IAIYSIS REVISION:28 REVISION: 29 DATE DATE  : g /te

9/2020 APPETIDIX C.3 CIRCUIT COORDINATION EVALUATIQN

SUMMARY

POWER COORD-SUPPLY CIRCUIT COMPONENT DESCRIPTION INATED NOTES YBU BPYBUO 3A Y4502 FUSE PA}ilEL Y4502 YES 6 BPYBUO 5A Y3 502 PAI{EL Y3502 YES 6 BPYBUO 8A c57578 EHC SYSTEM CABINET YES 6 BPYBUO 9A c5758F MISC ELECTRONIC CTRL CAB YES 6 BPYBU1 OA YATS4 5 O 1 COMPUTER RAIP YES 5 BPYBU1 1A u500 I\4AIN COMMUNICATION BOX YES 6 BPYBUl2A c57 7 2G- PLATilT PROC . COMP. , C577 0B YES 6 BPYBUl4A C5772D, E PLAI{T PROCESS COMPUTER YES 6 BPYBU].74 c5751 COMPUTER LIOP 2 YES 5 BPYBU1 8A c5751 COMPUTER LIOP 2 YES 5 BPYBUs 1A c5759C INST POWER NNI-X BUS (ALT) YES t_

YE1 1PYE1O 1A HV532 9A EDG RM 1 DAMPER YES L ,24 1PYE1O2A HVs32 98 EDG RM 1 DAMPER YES 1,24 1PYE1O3A HV532 9C EDG RM 1 DAMPER YES I ,24 1PYE1O4A HVs3 05 LV SWGR RM FA.Iil 1 DA},IPER YES L ,24 YE2 ]- CYE 2 ]. 1A c5751A SFRCS CH. ]- LOGIC PA}IEL NO 1 9 ,24 1PYE2 O 1A IvIVs O 114 CTMT AIR SMPL ISO VLV NO 6 24 1PYE2 O2A Iv1V5 0 11_B CTMT AIR SMPI, ISO VLV NO 6 24 1PYEz O 3A t{vs01]_c CTMT AIR SMPL ISO VLV NO 5 24 1PYE2 O4A Ivfvs 0 1]_D CTMT AIR SMPL ISO VLV NO 6 24 1PYE2 O5A FTVsO ]-].E CTMT AIR SMPI, RET ISO VLV NO 6 24

]-PYE2 O 5A MCSO O OA EMER VTilT SYS MOD DMPR 1 NO 6 24 1PYE2 O 7A MC5O O OB EMER VNT SYS MOD DMPR 2 NO 6 24 1PYE2 O 9A HVs443A CCWP RM FAN 1 BYPASS DMPR NO 5 24 1PYE2 1OA HV54438 CCWP RM FAN 1 IN DMPR NO 6 24 1PYE2 ]-2A HV5443C CCWP RM OA LOITVER 1 NO 6 24 YF1 2PYF]-O1A HVs335A EDG RM 2 DAMPER YES 1 ,24 2PYFIO2A HVs3368 EDG RM 2 DAMPER YES 1 ,24 2PYF1O3A HV5336C EDG RM 2 DAMPER YES 1 ,24 2 PYF1O4A HVs3l_4 LV SWGR RM FAN 2 DAMPER YES l- ,24 vF2 2CYFz 114 c5792A SFRCS CH. 2 LOGIC PAI{EL NO 1 I ,24 2 PYF2 O1A IVIVs 0l_ 0A CTMT AIR SMPL ISO VLV NO 6 ,24 2PYF2 O2A MV5OlOB CTMT AIR SMPL ISO VLV NO 6 ,24 2 PYF2 O3A MVSOlOC CTMT AIR SMPL ISO VLV NO 6 ,24 2PYF2 O4A MV5OlOD CTMT AIR SMPL ISO VLV NO 6 ,24 2PYF2 O5A 1,ru501_0E CTMT AIR SMPL TSO VLV NO 5 ,24 2 PYFz O 5A MCsO14A EMER VNT SYS MOD DMPR 3 NO 5 ,24 2 PYF2 O 7A MCs0l_48 EMER \n\IT SYS MOD DMPR 4 NO 6 ,24 2 PYF2 O9A HV5444A CCWP RM FAI{ 2 BYPASS DMPR NO 5 ,24 2 PYF2 1OA HVs444B CCWP RM FAI{ 2 IN DMPR NO 5 ,24 2 PYF2 12A HV5444C CCWP RM OA LOUVER 2 NO 5 ,24 BPYBU15A C5775 PLANT COMPUTER CABINET C5775 YES 6 BPYBU16A C5775 PLANT COMPUTER CABINET C5775 YES 6 SYMBOLS; ACC = ACCEPTABLE t_5

Davis-Besse Unit 1 Fire Hazard Analysis Report NOTES FOR APPENDIX C-3

1. Component is required for Safe Shutdown. The values represent the fuse size or frame size/long-time delay pickup setting of the trip device. See notes on Drawing E-4 for typical applications of power sensor (type PS1-A) overcurrent trip devices on bus incoming and tie breakers. Type SST overcurrent trip devises with internal ground fault protection are provided on certain feeder breakers.
2. Within a family of protective devices, the most limiting are the highest 116 rated load (downstream) device and the lowest rated supply (upstream) device. Less limiting devices are bounded by these devices, and therefore the less limiting devices are normally not evaluated directly.
3. Process rack, relay and control cabinet loads are individually fused and coordinated with the incoming breaker/fuse. Where the cabinet provides power for solenoids, individual coordinated fuses serve each branch circuit. Fuse sized and types were taken from the design and vendor drawings and the fuse list. Where a specific type was not listed or verified by walkdown, the most conservative type of those stocked by Davis-Besse for the application was assumed.
4. Procedures require stripping loads prior to backfeed, therefore, associated circuits will be verified to be tripped/disconnected prior to energizing the backfeed path.
5. See Fire Hazard Analysis Report (FHAR Appendix A Note 5; this component acts as a power supply and the connected load cables are routed to evaluate spurious actuation due to hot shorts, however, coordination of the individual loads is not required since power to this component is not needed for Safe Shutdown.
6. Evaluated for associated circuit coordination.
7. This power supply is Daisy-chained with a Safe Shutdown component. Therefore, coordination is required to ensure operability of the Safe Shutdown component. For example, a typical circuit feeds three panels off a 10-amp fuse. Only one is considered Safe Shutdown, but all three cables are associated with the safe Shutdown component and routed in FHAR Appendix B. The largest fuse on the other two non-Safe Shutdown relay cabinets is evaluated to ensure that a short there blows the fuse at the non-Safe Shutdown panel instead of the 10-amp fuse.
8. GENERAL NOTE: Due to implementation of FCR 85-0063, the 480V level has been adequately coordinated for Safe Shutdown; see the 480V Breaker Coordination to Meet Common Power Source Criteria of Appendix R (Calculation C-EE-013.10-001). Cables associated with breakers that will have the automatic trip function removed are listed in Appendix C-3 are protected by the upstream breakers.

A fault in the feeder to the Jockey Fire Pump (MP0060) due to a fire in Area BH will trip BE1280 considering the cable length to the fault; this provides adequate coordination.

Yes indicates adequate coordination for Appendix R. No indicates that the Safe Shutdown Analysis assumes loss of the power source. ACC means that a lack of coordination is acceptable and is considered in the Safe Shutdown Analysis. An entry of C3-17 FHAR Rev 28 9/2018

Davis-Besse Unit 1 Fire Hazard Analysis Report NOTES FOR APPENDIX C-3 NA in the Load column indicates that a single fuse is provided for the entire scheme listed.

9. Unbuffered AC does not leave this cabinet; therefore, coordination is not required beyond the feeder breaker.
10. Number not used.
11. Containment Emergency Sump Valve is depowered for Safe Shutdown.
12. Circuits 1CY104A & B (2CY204A & B) provide 120V AC control power to the Control Room Emergency Ventilation System Panels C6708 & C6714 (C6715 & C6709) from panels Y1 (Y2).

A review of E-801, Rev. 12, E-60B, Sht 37, Rev. 3, E-60B, Sht 34, Rev. 3, and Vendor Drawings 7749-M-410-550-7, 7749-M-551-7 and 7749-M-410-281-10 shows that all circuits powered from Y1 and Y2 are Safe Shutdown cables except for 1LV4906A(2LV4907) which are buffered low level instrument cables. A short circuit or induced voltage on the low level instrument cables will not affect Safe Shutdown.

The power serves redundant equipment in Fire Area HH and control circuits routed in common areas DD and FF; otherwise, redundant Trains of CREVS are not routed in the same fire area. A lack of coordination within a Train due to a fire in the above specific areas could result in a loss of CREVS, but this is already assumed in the analysis. The fuses at Y1, Y2 are adequately coordinated with the incoming fuse.

Therefore, there are no associated circuits of concern and the lack of coordination does not affect Safe Shutdown.

13. Y1(Y2) and alternate feeds Y3(Y4) supply control power to the respective emergency diesel generator cabinets as follows:

C3615 E-559 Sht 1, Rev 10 C3616 E-560 Sht 1, Rev 9 E-559 Sht 2, Rev 9 E-560 Sht 2, Rev 11 C3617 E-559 Sht 3, Rev 13 C3618 E-560 Sht 3, Rev 13 C3621 E-559 Sht 4, Rev 13 C3622 E-560 Sht 4, Rev 13 Y1 & Y4 are used as the control power sources due to coordination concerns.

To evaluate the circuits associated with the diesels, the conservative approach was taken to review all cables to and from the cabinets as shown on the above wiring diagrams.

a. Safe Shutdown cables have been evaluated separately.
b. Cables that interconnect the above cabinets are all local to the respective diesel (same fire area) and, therefore, could not become an associated circuit of concern (e.g. Scheme GD107 and 111).

C3-18 FHAR Rev 28 9/2018

Davis-Besse Unit 1 Fire Hazard Analysis Report NOTES FOR APPENDIX C-3

c. The Day Tank level instrument is separately powered from C5758C (M-324-41-18 Sht. 2) and is not an associated circuit of concern. Channel B is similar.
d. Circuits with Channel A or B designators are not powered from Y1 or Y2

[annunciator circuits, computer inputs to Drawing E-724, isolated relay contacts (e.g. E-64B Sht. 1B, Rev. 8)].

e. Cables ACV1131B and G (EL4B SW 11B, Rev. E) are powered from Y1 and the cable is routed to the intake structure however the 2 amp fuse adequately coordinates the whole scheme with the upstream fuse of the same type and does not jeopardize safe shutdown circuits (E64B Sht. 11B, Rev. 12).
f. Diesel sequence schemes SXSEQ 1-4 are powered from a different ACC supply at relay cabinets (E64B Sht. 18, Rev. 2), SFSEQ 1-4 are powered from SFAS (E64B Sht. 17, Rev. 5) and are not considered Safe Shutdown for Appendix R.
g. Diesel warning light Schemes BWLDG 1 and 2 are powered from Relay Cabinets (Ch. A, B) (E-64B Sht. 19, Rev. 0), not Y1/Y2.
h. SFAS Remote Position Switch Monitoring SFC11 (E760) is not powered from Y1/Y2.

Each circuit feeds the cabinets for a single diesel generator. Circuits stay in the fire are associated with the respective diesel generator (e.g. 6A feed to relays) except for separately fused (2A) indicating lights which are adequately coordinated. By the above process of elimination, there are no associated circuits of concern and a lack of coordination does not affect Safe Shutdown.

14. The circuit feeds the Remote Shutdown Panel (C3630). Individual power supplies buffer (isolate) those low level instrument cables that leave the area. The fuses are only subject to fire-induced fault current if the fire occurs in Fire Area R. Safe Shutdown is possible without these circuits. See Drawing 7749-M-544-6-10. (For transfer of DC circuits see E-45B Sht. 11B, Rev. 15). Therefore, these are not associated circuits of concern.
15. The circuit feeds the SG high point vent valves (AC), position indication and alarm relays. Power is not required for Safe Shutdown. A blown fuse will not prevent Safe Shutdown (See E-1009, Rev. 4, E-1010, Rev. 4, E-1050 Shts. 1 and 2, Rev. 1, E-1051 Shts. 1 and 2, Rev. 1, and E-52B Sht. 71B, Rev. 1). Therefore, these are not considered circuits of concern.
16. CDF-11A-1 provides status indicating lights for CF01B and RC3704 provides control power to CCWS surge Tank Level Relay LR3757. Power to these components is not needed for Safe Shutdown although the power cables are individually evaluated in each area analysis. RC3706 is a spare circuit. CDE-11B-2 provides control power for normally de-energized DH12 Interlock (E52B/24D, Rev. 8). RC3702 provides power for C3-19 FHAR Rev 28 9/2018

Davis-Besse Unit 1 Fire Hazard Analysis Report NOTES FOR APPENDIX C-3 the SG level set, and diesel sequence schemes, neither of which is required for Safe Shutdown.

CDF-11A-1 and CDF-11A-2 share a common power source, however, power is not required for Safe Shutdown. The Circuit 1CY117B for RC3706 is a spare and therefore, is acceptable. CDF-11A-1 provides indication for CF01A which is not needed for Safe Shutdown and CDF-11A-2 is similarly fused and no longer provides indication for the M.S. Isolation Valves FV101D and E. Therefore, these are not considered associated circuits of concern.

17. Power to SFRCS Cabinets C5762A and C5792 is not required for Safe Shutdown. Any failure mode of logic or relays is acceptable for the Appendix R Safe Shutdown Evaluation. See also Note 18 for indicating lights. Therefore, these are not associated circuits of concern. With a Loss Of Offsite Power (LOOP), Buses YE2 and YF2 will be without power for approximately 10 seconds until the EDG is loaded and during this time SFRCS logic channels 3 and 4 will be tripped. See System Description SD-010 Rev. 0, Section 2.7 for a discussion of logic and solenoid power sources and distribution. Either the incoming circuit breaker or the breaker feeding the loads provides acceptable coordination.
18. Power to the Main Control Room and local indicating lights is individually fused and is not required for Safe Shutdown. Physical positions and component operation can be verified if necessary (E-576 Sht. 6, Rev. 16, E-568 Sht. 7, Rev. 18). Therefore, there are no associated circuits of concern.
19. This circuit feeds a single system (NI/RPS) in the Control Room. Within C5755E, a 5-amp fuse feeds RY indicators including the source range channels NI-NI1 and 2 (M-563-317, M-536-37-5). In addition, this power source feeds the power supplies for the source range and power range detectors and the RPS inputs: (7749-M-536-12-12)

Reactor Building Pressure Reactor Trip Reactor Pressure Linear Bridge The NI Source Range Cables (E-730/Sh. 3, Rev. 4, E-731/Sh. 3, Rev. 4) are routed into Containment and are evaluated for Safe Shutdown capability on an area by area basis.

Other cables that leave the Control Room are assumed to be low level instrument cables, buffered by their power supplies, independent of the NI needed for Safe Shutdown. Based on system and area analysis these circuits are acceptable from an Appendix R standpoint.

20. A review of the 4kV breaker settings has been performed for the Safe Shutdown electric plant configuration. See the electrical calculation for the individual feeder. The accredited Train cables have been shown to be free of fire damage and are, therefore, not a coordination concern.

C3-20 FHAR Rev 28 9/2018

Davis-Besse Unit 1 Fire Hazard Analysis Report NOTES FOR APPENDIX C-3

21. Electrical coordination may be lost due to a fire-induced fault in this cable. No credit is taken for the availability of the MCC if there is inadequate separation or protection.
22. A review of coordination of the loads on MCC F71 has shown that one non-Safe Shutdown Load, Y3401 (50-amps) may not coordinate with the incoming 600-amp molded-case circuit breaker. This MCC is needed only for fire in Area EE (Aux Bldg.

Fan Alley) and Y3401 serves loads in the Turbine Building, therefore, these are not associated circuits of concern.

23. Cable 2CV&432E serves a single sample valve in the same fire area as the Power Supply RC4607 and either 3-amp fuse provides adequate circuit protection.
24. YE2(YF2) molded-case circuit breakers do not coordinate with the incoming circuit breaker. The only Safe Shutdown loads off these MCCs are SFRCS. Loss of this power to the failsafe system is conservatively assumed. The coordination of YE1(YF1) partly relies on length of cables 1PYE104A and 2PYF104A attenuating the fault current.
25. The delay band is adjusted to the maximum end the breakers are coordinated.
26. Calculations have shown that Y1, Y1A, Y2, Y2A, Y3 and Y4 are coordinated with only the CVT source fed from E16A and F16A. The lack of coordination with the normal sources (YRF1, YRF2, YRF3 and 4), is not a Safe Shutdown concern since the automatic transfer to the accredited source will occur when the current transformer senses approximately 120% overcurrent in the feeder to the panels. The current limiting fuses on these panels are effective in reducing the peak let-through current to levels which do not trip breakers in the accredited path.
27. Coordination for F7 is given in Calculation C-EE-005.01-21 and for the bustie to F7 in Calculation C-EE-004.01-034, ground fault may result in tripping of F71; however, the motor-driven feed pump is only accredited for Safe Shutdown in Area EE and the cable is not routed in Area EE.
28. A number of components and modules in the NNI cabinets and a number of field mounted components external to the NNI cabinets require 120 V AC rather than

+/-24 V DC for their operation. All of the components and modules which require 120 V AC power for their operation receive their power from the AC fuse panels in both the NNI X and NNI Y cabinets. The largest load fuse size is a Bus GLD 5 per field walkdown which is adequately coordinated with the incoming A2Y15 distribution fuse within the NNI X and Y cabinets.

29. This circuit serves a single circuit scheme and a failure in any cable is evaluated to result in the loss of only the one component (RC2A as shown in DCN-E52B/13-535).

Therefore, the coordination is acceptable.

30. Coordination for the disconnect device for the Turbine Generator Emergency Bearing Oil Pump (D118) is given in Calculation C-EE-002.01-011. The disconnect device is a magnetic breaker only Westinghouse type HKA breaker rated at 225/70A (225A frame 70A rated breaker). The thermal trip is not installed and the magnetic trip (350A to C3-21 FHAR Rev 28 9/2018

Davis-Besse Unit 1 Fire Hazard Analysis Report NOTES FOR APPENDIX C-3 700A) is set at 455A in accordance with Relay Setting Manual sheet 1-30-201. With the breaker set at 455A the breaker is coordinated with the upstream 500-amp fuse.

31. As discussed in Attachment 10 of Calculation C-EE-002.01-011 (Ref. 2.6.E), the loads associated with the power supplies have been evaluated to be lost due to the fire (e.g.

D1P and D1N are both in the same fire area as their power supply DC MCC 1 and thus no credit is taken for these for a fire in this fire area.

C3-22 FHAR Rev 28 9/2018

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