ML18290B094

October 16, 2018, Public Meeting Presentation Slides Related to July 27, 2018, License Amendment Request to Implement NEI 06-09, Revision 0-A, Risk-Informed Technical Specifications Initiative 4b

ML18290B094
Person / Time
Site:	Farley
Issue date:	10/16/2018
From:	Burns P, Shawn Williams Plant Licensing Branch II
To:
Williams S
References
Download: ML18290B094 (29)

Text

Electrical Distribution System Plant Farley Dan Williams - Operations Supervisor Pamela Burns - Licensing Engineer

Topics To Be Covered

• High Voltage Switch Yard

• Intermediate and Low Voltage Distribution

• Diesel Generators

• Diesel Generator Sequencers

• Technical Specifications - Electrical Power Systems

BAINBRIDGE, GA LINE 230KV BUS 500KV BUS SNOWDOUN, AL LINE RACCOON CREEK, GA.

LINE HIGH-VOLTAGE TRANSMISSION LINES AUTOTRANSFORMERS STARTUP TRANSFORMERS (TYPICAL OF FOUR)

G UNIT 1 G

UNIT 2 TRANSFORMERS MAIN GENERATORS UNIT AUXILIARY TRANSFORMERS (TYPICAL OF TWO)

N 90 MVAR CAPACITOR BANK PINCKARD, AL LINE WEBB, AL LINE 230KV SHUNT REACTOR SINAI CEMETERY, FL.

LINE OpsEps018 12 kV North feeder 12 kV South feeder

Unit One Electrical Distribution Simplified FROM 230KV SWYD D/G 1-2A 4160 LC's MCC's D/G 1C D/G 1B D/G 2C UA 1A UA 1B MAIN GEN U-1 TO 230 KV SWITCHYARD E

D C

B A

J L

G F

K H

I TRN CEN W

U B

A P

Y M

X Z

N C

V Q

J S

L E

B G

E D

C I

A M

P N

Q D

K H

G R

N H

W J

M X

K F

A S

U V

T G

B Y

P I

L Z

C E

D F

OpsEps086 SU 1A SU 1B

Unit 1 4160 Volt Electrical Distribution TO 230 KV SWITCHYARD UNIT 1 MAIN GENERATOR UNIT AUX XFMR 1B XFMR 1A UNIT AUX FROM 230 KV SWITCHYARD STARTUP XFMR 1B SWITCHYARD 230 KV FROM STARTUP XFMR 1A D/G 2C D/G 1B FROM S/U 1B FROM S/U 1A A

B C

1A 1B 1C 1D 1E 1J 1L 1G 1F 1K 1H D/G 1-2A DH07 LC 1H LC 1R LC 1G LC 1K LC 1D LC 1F LC 1E DG08 DG15 DG01 DF15 DF13 DF02 DG13 DG02 KI TYPICAL OF 4

RIVER WATER PUMP 10 RIVER WATER PUMP 9

RIVER WATER PUMP 8

SERVICE WATER PUMP 1B 1A CCW PUMP 1C AFW PUMP 1A CTMT SPRAY PUMP 1A CHARGING PUMP 1B CCW PUMP 1B CTMT SPRAY PUMP 1B AFW PUMP 1B RHR PUMP 1B CHARGING PUMP 1C CCW PUMP 1A SERVICE WATER PUMP 1C KI KI KI LC 1L LC 1J LC 1S LC 1C LC 1V 1X 1Z 1D SERVICE WATER PUMP 1E FIRE PUMP 3

RIVER WATER PUMP 4

RIVER WATER PUMP 5

MCC 1R 1Q LC 1P LC 1M LC 1B TURBINE BLDG CHILLER COMPRESSOR 1B TURBINE BLDG CHILLER COMPRESSOR 1A HEATER DRAIN PUMP 1B HEATER DRAIN PUMP 1A DE03 DE01 DD03 DD01 EI EI DEEP WELL PUMP 3 DC01 DC04 DB05 DB01 TRAINING CENTER RCP 1C RCP 1B CIRC WATER PUMP 1B RCP 1A CIRC WATER PUMP 1A LC 1I DA07 DA01 X

Y X

Y Y

X Y

X D

E D

E EI=ELECTRICAL & SYNCHRONIZING INTERLOCK ATD=AUTOMATIC TRANSFER DEVICE KI=KEY INTERLOCK OpsEps054 SERVICE WATER PUMP SERVICE WATER PUMP 480V LTG SWGR 1A CHARGING PUMP 1A RHR PUMP 1A CONDENSATE PUMP 1A CONDENSATE PUMP 1C CONDENSATE PUMP 1B LCLC 1A1U 1W 1Y LCLC 1Q1N EI ATD EI ATD EI ATD DF01 EI EI

6 4160V Busses

• Emergency/Vital:

• F, G

• ESF loads - Charging, RHR, CS, AFW, CCW pumps

• H, J

• River Water Pumps

• K, L

• Service Water Pumps

• Non-Emergency:

• A, B, C - Reactor Coolant Pumps, Circ Water pumps

• D, E - Condensate pumps, Heater drain pumps

7 Low Voltage Distribution 600/480/208V

• 4160V Busses supply through Station Service Transformers (SSTs)

• 600V Load Control Centers (600V LCCs)

• 480V LCCs

• 480V Motor Control Centers (480V MCCs)

• 600V LCCs Supply 600V Motor Control Centers (MCCs) & 208V Switchgear directly

• Some 600V MCCs have transformers which supply a section of the MCC for 208V power

8 600V emergency distribution

• 600V LCs

• 16 total

• 5 unit specific (A, C, D, E, and F)

• 6 shared LCs (H, J, K, L, R, and S)

9 600V emergency distribution

• 600V MCCs

• 5 Unit I MCCs (A, B, T, U, and V)

• 7 Unit II MCCs (A, B, T, U, V, CC, and DD)

• 10 motor control centers (F, G, I, K, L, N, P, S, X, and Y) that may be supplied by either Unit

10 Emergency Diesel Generators

• Emergency power source for Loss of Off-site Power (LOSP)

• 4 Emergency Diesel Generators

• 1-2A, 1B, and 2B diesel generators rated at 4075 kW (Big)

• 1C diesel generator rated at 2850 kW (Little)

4160 Volt Emergency Distribution D/G 1C D/G 2B FROM S/U 2B FROM S/U 2A A

B C

2H 2K 2F 2G 2L 2J DJ06 LC 2S LC 2J LC 2L LC 2E LC 2F LC 2D DF08 DF15 DF01 DG15 DG08 DG01 DG13 DG02 DF13 DF02 EI EI KI TYPICAL OF 4

RIVER WATER PUMP 1

RIVER WATER PUMP 2

RIVER WATER PUMP 3

SERVICE WATER PUMP 2D SERVICE WATER PUMP 2E CCW PUMP 2A CHARGING PUMP 2C RHR PUMP 2B AFW PUMP 2B CTMT SPRAY PUMP 2B CHARGING PUMP 2B CCW PUMP 2B CTMT SPRAY PUMP 2A AFW PUMP 2A RHR PUMP 2A CHARGING PUMP 2A CCW PUMP 2C SERVICE WATER PUMP 2C KI KI KI LC 2K LC 2G SERVICE WATER PUMP 2B SERVICE WATER PUMP 2A RIVER WATER PUMP 7

RIVER WATER PUMP 6

DH07 G

F EI=ELECTRICAL & SYNCHRONIZING INTERLOCK KI=KEY INTERLOCK LC 2H LC 2R D/G 2C D/G 1B FROM S/U 1B FROM S/U 1A A

B C

1J 1L 1G 1F 1K 1H D/G 1-2A DH07 LC 1H LC 1R LC 1G LC 1K LC 1D LC 1F LC 1E DG08 DG15 DG01 DF15 DF08 DF01 DF13 DF02 DG13 DG02 EI EI KI TYPICAL OF 4

RIVER WATER PUMP 10 RIVER WATER PUMP 9

RIVER WATER PUMP 8

SERVICE WATER PUMP 1B SERVICE WATER PUMP 1A CCW PUMP 1C CHARGING PUMP 1A RHR PUMP 1A AFW PUMP 1A CTMT SPRAY PUMP 1A CHARGING PUMP 1B CCW PUMP 1B CTMT SPRAY PUMP 1B AFW PUMP 1B RHR PUMP 1B CHARGING PUMP 1C CCW PUMP 1A SERVICE WATER PUMP 1C KI KI KI LC 1L LC 1J LC 1S SERVICE WATER PUMP 1D SERVICE WATER PUMP 1E FIRE PUMP 3

RIVER WATER PUMP 4

RIVER WATER PUMP 5

DJ06 D

E OpsEps037

12 Emergency Diesel Generators

• Swing diesels 1-2A or 1C (opposite units) supplies 4160 F which supplies 4160 K and H

• Diesel generator 1B supplies 4160 1G; 1G supplies 4160 1L and 4160 1J

• Diesel generator 2B supplies 4160 2G; 2G supplies 4160 2L and 4160 2J

13 4160V EMER BUS POWER SOURCES

• 2C (SBO) Shared 1(2)J B TRAIN 4160V Bus Normal Emergency Back up 1(2) H 1 (2)F 1C DG 1 (2) K 1 (2) F 1(2) F 1 (2) F SU 1(2) A 1-2A DG SU 1(2) B 1 (2) G SU 1(2) B 1B (2B) DG SU 1 (2) A 1 (2) L 1 (2) G 1 (2) G 1 (2) J 1 (2) G 2C DG

14 Station Blackout Diesel

• 2C Diesel Generator is the station blackout diesel

• Also known as the Alternate AC (AAC) diesel

• Only started when a station blackout exists on one of the units

• No auto start capability. Manually started per procedure.

• Little DG rated at 2850 kW

15 Functions performed by the sequencers:

Determining and remembering which fault condition exists Securing emergency bus loads (Load Shed)

Start the appropriate emergency diesel generators on a loss of site power (LOSP)

Aligning diesel generator outputs Starting (sequencing) LOSP or ESF loads

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• 1-2A and 1C DGs align to the A train buses on opposite units

• 1-2A DG aligns to the A train of the unit that received the first SI signal -

when called for

• 1-2A DG will not energize the 4160v bus H on an SI signal

• 1-2A DG prefers unit 1 during a simultaneous dual unit LOSP Diesel Generator Sequencers

• General conclusions for dual unit DG sequencer operations

17 ESF loads started whenever a safety injection has occurred for the affected unit

• Step 1 - Charging pump

• Step 2 - RHR, CTMT spray pumps

• Step 3 - Service water pumps

• Step 4 - CCW, CTMT cooler(s)

• Step 5 - MDAFW pump, Rx cavity H2 dilution fan

• Step 6 - Battery charger, air compressor (A train only)

Diesel Generator Sequencers - ESF Loads NOTE: All are started at same time if grid available

18 LOSP loads started for Loss Of Site Power situations (assuming an SI has not occurred)

Step 1 - Charging pump, Rx cavity cooling fan Step 2 - Service water pump, CRDM cooling fan, throttle close SW to TB valves Step 3 - Service water pump Step 4 - CCW pump, selected CTMT cooler Step 5 - MDAFW pump Step 6 - Battery charger, air compressor (A train only)

Diesel Generator Sequencers LOSP Loads

LOSP Unit 1, No Failures

LOSP Unit 1, SI Unit 1, No Failures 2H 2K 2F 2G 2L 2J 1H 1K 1F 1G 1L 1J DF13 DF02 DG13 DG02 DF13 DF02 DG02 DG13 DHO7 DHO7 DJ06 DJ06 DF08 DF08 1C 2B DG08 1B DG08 2C 1-2A TRAIN A

B TRAIN UNIT 2

1 UNIT TRAIN B

A TRAIN RUN DGs 1-2A, 1B, AND 1C START. BUS 1H REMAINS DEENERGIZED UNTIL MANU-ALLY ENERGIZED BY THE OPERATOR. DG 1-2A ALIGNS TO BUS 1F, AND B1F ESS SEQUENCER RUNS. DG 1B ALIGNS TO BUS 1G, AND B1G ESS SE-QUENCER RUNS.

RUN RUN NOTES :

OpsDgs034

LOSP Unit 2, No Failures DGs 1-2A, 2B, AND 1C START.

2H 2K 2F 2G 2L 2J 1H 1K 1F 1G 1L 1J DF13 DF02 DG13 DG02 DF13 DF02 DG02 DG13 DHO7 DHO7 DJ06 DJ06 DF08 DF08 1C 2B DG08 1B DG08 2C 1-2A TRAIN A

B TRAIN UNIT 2

1 UNIT TRAIN B

A TRAIN RUN RUN RUN OpsDgs035 DG 1-2A ALIGNS TO BUS 2F, AND B2F LOSP SEQUENCER RUNS. UPON COMPLETION OF B2F LOSP SEQUENCER RUN, DF13-2 CLOSES. DG 2B ALIGNS TO BUS 2G, AND THE B2G LOSP SEQUENCER RUNS.

NOTES

LOSP Unit 2, SI Unit 2, No Failures 2H 2K 2F 2G 2L 2J 1H 1K 1F 1G 1L 1J DF13 DF02 DG13 DG02 DF13 DF02 DG02 DG13 DHO7 DHO7 DJ06 DJ06 DF08 DF08 1C 2B DG08 1B DG08 2C 1-2A TRAIN A

B TRAIN UNIT 2

1 UNIT TRAIN B

A TRAIN RUN DGs 1-2A, 2B, AND 1C START. BUS 2H REMAINS DEENERGIZED UNTIL MAN-UALLY ENERGIZED BY THE OPERATOR. DG 1-2A ALIGNS TO BUS 2F, AND THE B2F ESS SEQUENCER RUNS. DG 2B ALIGNS TO BUS 2G, AND THE B2G ESS SEQUENCER RUNS.

RUN RUN NOTES OpsDgs036

Dual-Unit LOSP, No Failures 2H 2K 2F 2G 2L 2J 1H 1K 1F 1G 1L 1J DF13 DF02 DG13 DG02 DF13 DF02 DG02 DG13 DHO7 DHO7 DJ06 DJ06 DF08 DF08 1C 2B DG08 1B DG08 2C 1-2A TRAIN A

B TRAIN UNIT 2

1 UNIT TRAIN B

A TRAIN RUN RUN DGs 1-2A, 1B, 2B, AND 1C START AND ALIGN AS SHOWN. DG 1-2A ALIGNS TO BUS 1F, AND, UPON COMPLETION OF THE B1F LOSP SEQUENCER RUN, RUN RUN NOTES DF13-1 CLOSES. DG 1C ALIGNS TO BUS 2F THROUGH DH07-2 AND DF13-2.

B2F LOSP SEQUENCER RUNS. DG 1B ALIGNS TO BUS 1G, AND THE B1G LOSP SEQUENCER RUNS. DG 2B ALIGNS TO BUS 2G, AND THE B2G LOSP SEQUENCER RUNS.

OpsDgs037

Dual-Unit LOSP, SI Unit 1, No Failures DGs 1-2A, 1B, 2B, AND 1C START. DG 1-2A ALIGNS TO BUS 1F, AND THE B1F 2H 2K 2F 2G 2L 2J 1H 1K 1F 1G 1L 1J DF13 DF02 DG13 DG02 DF13 DF02 DG02 DG13 DHO7 DHO7 DJ06 DJ06 DF08 DF08 1C 2B DG08 1B DG08 2C 1-2A TRAIN A

B TRAIN UNIT 2

1 UNIT TRAIN B

A TRAIN RUN RUN ESS SEQUENCER RUNS. BUS 1H REMAINS DEENERGIZED UNTIL MANUALLY ENERGIZED BY THE OPERATOR. DG 1C ALIGNS TO BUS 2F THROUGH DH07-2 RUN RUN NOTES AND DF13-2. THE B2F LOSP SEQUENCER RUNS. DG 1B ALIGNS TO BUS 1G, AND THE B1G ESS SEQUENCER RUNS. DG 2B ALIGNS TO BUS 2G, AND THE B2G LOSP SEQUENCER RUNS.

OpsDgs038

Dual-Unit LOSP, SI Unit 2, No Failures 2H 2K 2F 2G 2L 2J 1H 1K 1F 1G 1L 1J DF13 DF02 DG13 DG02 DF13 DF02 DG02 DG13 DHO7 DHO7 DJ06 DJ06 DF08 DF08 1C 2B DG08 1B DG08 2C 1-2A TRAIN A

B TRAIN UNIT 2

1 UNIT TRAIN B

A TRAIN RUN RUN RUN RUN OpsDgs039 DGs 1-2A, 1B, 2B, AND 1C START. DG 1-2A ALIGNS TO BUS 2F, AND THE B2F ESS SEQUENCER RUNS. BUS 2H REMAINS DEENERGIZED UNTIL MANUALLY ENERGIZED BY THE OPERATOR. DG 1C ALIGNS TO BUS 1F THROUGH DH07-1 NOTES AND DF13-1. THE B1F LOSP SEQUENCER RUNS. DG 1B ALIGNS TO BUS 1G, AND THE B1G LOSP SEQUENCER RUNS. DG 2B ALIGNS TO BUS 2G, AND THE B2G ESS SEQUENCER RUNS.

Technical Specifications - Electrical Systems T.S. 3.8.1 AC Sources - Operating T.S. 3.8.9 Distribution Systems - Operating

Technical Specifications - 3.8.1 AC SourcesOperating LCO 3.8.1 - The following AC electrical sources shall be OPERABLE:

a. Two qualified circuits between the offsite transmission network and the onsite Class 1E AC Electrical Power Distribution System; and

b. Two diesel generator (DG) sets capable of supplying the onsite Class 1E power distribution subsystem(s); and

c. Automatic load sequencers for Train A and Train B.

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Technical Specifications - 3.8.9 Distribution Systems -Operating LCO 3.8.9 - Train A and Train B AC, DC, and AC vital bus electrical power distribution subsystems shall be OPERABLE.

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• Any additional questions?