ML22194A386

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2 to Updated Final Safety Analysis Report, Figure 9.4-35, Sheet 1, Rev. 0, System Flow Diagram Eb HVAC - Electrical and Battery Room
ML22194A386
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: ML22194A386 (1)
v • d • e


Text

14 I

13 SYSTEM OPERATING DATA NOTE 10 r('--.

AIR FLOW AIR TEMP.

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CFM

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400 65/77 B

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  • EMERGENCY CONDITION EXISTS WHEN NORMAL POWER IS LOST AND DG IS PROVIDING POWER SYSTEM DESIGN DATA AREA AIR AREA AIR AREA EMERGENCY"'

FLOW CFM TEMP. 'F AIR TEMP. 'F 400 65/75 54;q5 400 60/77 54/',5 I

NOTE 10 12 I

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HVAC UNIT OPERATION NOTES:

A.

ALL THREE WALL MOUNTED HVAC UNITS ARE CONTROLLED BY ITC79211 (TEC40 LEAD/LAG THERMOSTAT).LEAD LAG CONTROL ALLOWS ALL UNITS TO OPERATE WITH BALANCED RUN TIMES.

r----------------------------,

ECR50793C 11 XUP5100-AH

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

UNITS ARE ROTATED EACH WEEK FROM LEAD TO LAG TO BACKUP UNIT.LEAD UNIT STARTS FIRST WHEN ROOM TEMP.SETPOINT IS EXCEEDED.IF TEMPERATURE CONTINUES TO INCREASE/DECREASE AN ADDITIONAL 2 DEG F THE LAGGING UNIT IS STARTED.IF TEMPERATURE CONTINUES TO INCREASE/DECREASE YET AN ADDITIONAL 2 DEG F THE BACKUP UNIT IS STARTED.

I

<DIESEL BACKED)

WALL MOUNT HVAC UNIT I

NOTE E COMPRESSOR 9HP I

INDOOR BLOWER l/2HP,1070RPM ONLY ONE HVAC UNIT IS ALLOWED TO HEAT AT A TIME.

VENTILATION AIR INTAKE IS ONLY ALLOWED ON THE LEADING UNIT.

BLOWERS ARE CONTINUALLY RUNNING ON LEADING AND LAGGING UNITS.

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<1001/. VENT AIR)

CONDENSER FAN 3/4HP,1075RPM I

400 CFM HEATING COIL 15 KW

8.
c.

D.

E.

F.

XUP5100 AND XUP5101 ARE DIESEL BACKED. XUP5100 WILL AUTOMATICALLY VENTILATE WHEN POWER IS PROVIDED BY DG.

I OUTSIDE VOLTAGE 460V WHEN DE-HUMIDIFYING THE BACKUP UNIT IS STARTED IN THE HEATING MOOE UNTIL HUMIDITY DROPS BELOW SETPOINT. DE-HUMIDIFICATION IS DISABLED IF THE LAGGING UNIT IS I

,c-VENTILATIONtDRAIN t ~--~-------~

COOLING.

REFERENCE 208-004 SHEETS AH417, AH418 AND AH419 FOR ADDITIONAL HVAC UNIT CONTROL LOGIC.

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I AIR INTAKE I

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H.

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UPON SHUTDOWN THERE IS A 150 SEC.DELAY ON BREAK TIMER THAT PREVENTS THE IMMEDIATE RESTART OF THE COMPRESSOR.

VENT IF POWER IS LOST TO THE HVAC UNIT THERE IS A 135 SEC.DELAY ON MAKE TIMER THAT PREVENTS IMMEDIATE RESTART OF THE COMPRESSOR.

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RF cc t UP TO 1400 CFM IF NOT VENTILATING 331/.

HC I

1400 CFM !

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ra FIRE SERVICE I

NOTE 3 1---- -----------------------------------

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I EB ELECTRICAL ROOM EL. 436'-6' I UP TO 1400 CFM NOTE A EB BATTERY ROOM EL. 436'-6" HVAC UNIT I

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I IF NOT VENTILATING 1400 CFM l I

UP TO 1400 CFM IF NOT VENTILATING I

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RF cc HC RF cc 331/.

VENT VENT

!c;c:]P5387 i.::::;JAH421B 1

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~sl FIRE SERVICE FAN DISABLE I

FAN RUNNING NOTE3 I

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_ 1/6 HP I

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RPM 169. (VARIABLE SPEED I

120v FANMOTORl I

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G FC 1------i/1----+-:)

1-----1: 2 J

(1001/. VENT AIR)

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XDP5205-AH ECR50793C XFN0201-AH

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P5387 9

AH421A r::'.":I FIRE SERVICE FAN RUNNING l.!:,.::J FANN&ti~BLE A._

1/6 HP V

- - - RPM 1697 <VARIABLE SPEED 120v F ANMOTORl I

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XFN0200-SSW-1-AH ~ \

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(1001/. VENT AIR)

I 1XDP5204-AH\

ECR50793C

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XFD5402-AH

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331/.

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INoTEu-~ NOTE a I LOW FLOW

~ ALARM __:IG~

!: AN_ RUNNIN~

t 1400 CFM

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400 CFM -~/

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WALL MOUNT HVAC UNIT 400 CFM - I DRAIN I WALL MOUNT HVAC UNIT

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0001/. VENT AIR)

DRAIN COMPRESSOR 9HP (1001/. VENT AIR)

COMPRESSOR 9HP I

OUTSIDE VENTILATION

/

INDOOR BLOWER 1/2HP,1070RPM INDOOR BLOWER 1/2HP,1070RPM I

AIR INTAKE CONDENSER FAN 3/4HP,1075RPM

~~RTSi~iA::NTILATION CONDENSER FAN 3/4HP,1075RPM I

HEATING COIL 15 KW HEATING COIL 15 KW VOLTAGE 460V VOLTAGE 460V ECR50793C XUP5101-AH (DIESEL BACKED)

NOTE E GENERAL NOTES:

1.
2.
3.
4.
5.
6.
7.
8.
9.

ONLY XUP5100 AND XUP5101 ARE DIESEL BACKED.

ALL FANS ARE BACKED BY EB DIESEL GENERATORS.

IF A FIRE IS DETECTED IN ELECTRICAL OR BATTERY ROOM ALL HVAC UNITS AND VENTILATION FANS ARE STOPPED.

IF A FIRE IS DETECTED IN DG ROOM ALL FANS ARE STOPPED ANO DG IS STOPPED.

ALL CONTROL RELAYS ARE LOCATED IN XPN5387.

FAN CONTACTORS ARE LOCATED IN XPN5391.

BATTERY ROOM DOES NOT HAVE TO BE KEPT BETWEEN 60 AND 77 DEG F AFTER THE BATTERIES HAVE DISCHARGED

<AFTER DG HAS STARTEDl.ACCEPTABLE EMERGENCY TEMPERATURE RANGE INCREASES TO 54-95 DEG F.

HVAC ALARMS ARE INDICATED ON XPN5387.GENERAL 'EB HVAC TROUBLE ALARM' IS INDICATED ON TEMP MONITORING SYSTEM AND ANNUNCIATED IN MAIN CONTROL ROOM.SEE 208-004 SH.AH422 PAGE C.

REFERENCE 208-004 SHEETS AH417 THROUGH AH423 FOR HVAC UNIT AND FAN CONTROL LOGIC AS WELL AS ALARMS.

10.

REFERENCE DC07690-010 ISFSI ELECTRICAL BUILDING HVAC CALCULATION FOR ADDITIONAL INFORMATION.

11.

LOW AIRFLOW ALARMS HAVE A 20 SECOND ON DELAY TO PREVENT FALSE ALARMS WHEN THE FANS ARE STARTED.

DRAl\1NG Cl.ASS LEGIBILITY I FSAR Figure 9.4-35 SH. 1 SOUlll CAROI.IIIA ELECIRIC & CAS COUPAIIY

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ECR50793C 1

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I XUP5102-AH I

I ALL SYSTEM COMPONENTS ARE NON-NUCLEAR SAFETY RELATED BUILDING SERVICE SYSTEM FLOW DIAGRAM EB HVAC -

ELECTRICAL ANO BATTERY ROOM I

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