ML22194A414

2 to Updated Final Safety Analysis Report, Figure 9.4-36, Rev. 1, System Flow Diagram Aeb DG2 Room HVAC

ML22194A414
Person / Time
Site:	Summer  (NPF-012)
Issue date:	06/27/2022
From:	Dominion Energy South Carolina
To:	Office of Nuclear Reactor Regulation
Shared Package
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References
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Download: ML22194A414 (1)

Text

14 13 12 11 10 9

8 7

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SYSTEM OPERA TING DATA NOTE 7 rt>

AIR FLOW AIR 'Ta.4P.

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tLARM LIGHl'-0 NOTE II -V t.: _____ _

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! LOW FLOW L

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AEB DIESEL GENERATOR ROOM EL. 436'-6' I

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---i.::.:'.J AH423C XEG0102

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XDP5211-AH is~w\

,----J XFN020'l-SSW-1-AH ECR50870A NOTE 'l XFN0209-AH DIESEL GENERATOR XEG0102 RUNNING SIGNAL I

_..,.~CFM (100% RADIATOR COOLING EXHAUST)

DIESEL DRIVEN

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RADIATOR XEG0102-SSW-1-AH EXHAUST FAN r- - _ --§]t~~~~B NOTE 'l L ____ - ---,- LOW_!:L£!¥ ~

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1/4 HP RPM 1725 120V (VARIABLE SPEED FANMOTOR)

OUTSIDE AIR INTAKE

.. 3000 CFM (503/4 ROOM COOLING SUPPL Yl ECR50870A NOTE 9 F~!!:i_OP~

f NOTE 3 --V lLOWFLOW~

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f-ALARM ~G~

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XOP5 13-AH J~w\

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I NOTE 8 XOP5208-AH XFN0206-AH

.. 1050 CFM (1003/4 VENTILATION AIR)

I NOTE,,---v OUTSIDE AIR INTAKE I XFN0227-SSW-1-AH I

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XDP5214-AH

_..,. 1050 CFM (1003/4 VENTILATION AIR)

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L ~l\'._!'.LOW.~

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I LOW FLOW;<;>

L ALARM ~GHT L NOTE 10 SYSTEM DESIGN DATA NOTE 7 AREA AIR AREA AIR AREA EMERGENCY*

FLOW CFM TEMP. F*

AIR TEMP. F*

1050/21050

'l/1 19/122

• EMERGENCY CONDITION EXISTS WHEN NORMAL POWER IS LOST AND DG IS PROVIDING POWER NOTE 1 I I 5*

I 10' I

15' I

20*

3 2

1 FAN OPERATION NOTES:

1. ALL FANS ARE BACKED BY EB/AEB DIESEL GENERATORS.

2. IF A FIRE IS DETECTED IN AES OG ROOM ALL FANS ARE STOPPED AND AEB DG IS STOPPED.

3. FAN RUNNING STATE IS SHOWN ON XPN5387.FAN CONTROL RELAYS ARE LOCATED IN XPN5387.

4. FAN CONTACTORS ARE LOCATED IN XPN5607.

5. FAN LOW FLOW 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.

6. REFERENCE 208-004 SHEETS AH422 THROUGH AH423 FOR FAN CONTROL LOGIC AS WELL AS ALARMS.

7. REFERENCE DC076'l0-010 ISFSI ELECTRICAL BUILDING HVAC CALCULATION FOR ADDITIONAL INFORMATION.

8. VENTILATION FAN XFN0206 OPERATES AT ALL TIMES.IF A LOSS OF FLOW IS DETECTED AN ALARM IS GENERATED AND ADDITIONAL FANS ARE STARTED AUTOMATICALLY.

'l. XFN0208 AND XFN020'l START AUTOMATICALLY WHEN XEG0130 IS STARTED.XFN0207.XFN0226 AND XFN0227 WILL START AUTOMATICALLY IF DG ROOM TEMPERATURE INCREASES ABOVE 80DEG F AND DG IS RUNNING.

10. LOW AES DG ROOM VENTILATION AIR FLOW ALARM LIGHT INDICATED ON XPN5387.

11, COMMON LOW AEB DG COOLING FLOW ALARM LIGHT ON XPN5387

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

ORA'MNG Cl.ASS l£GIBILITt 1 FSAR Figure 9.4-36 SOIJlll CAROLINA ElECIRIC & GAS COMPANY VIRGIL C. SUMMER NUQEAR STATION BUILDING SERVICE SYSTEM FLOW DIAGRAM AEB DG2 ROOM H\IAC 6

DESIGN ENGINEERING

,. $CNM OOW'Nn' V, C. SUMMER NUa.£AR STATION JOl<INSVILLE S. C.

MADE CHECKED LE APPROVAL 1

4 28 15 JTS RS JMR MGR RS 0

2 3 15 JMR NO.

DAlE BY REVISION RS.. """'

D-912-193 1

LE CKO. 8 APPR<NAf.

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