ML23241A273

7 to Updated Final Safety Analysis Report, Chapter 3, Figure 3.2-22, Drawing 108022, Revision 40, Sheet 4, Turbine and Generator Associated Systems

ML23241A273
Person / Time
Site:	Diablo Canyon
Issue date:	05/25/2023
From:	Pacific Gas & Electric Co
To:	Office of Nuclear Reactor Regulation
Shared Package
ML23241A052	List: DCL-23-044, 7 to Updated Final Safety Analysis Report, Chapter 9, Figure 9.4-10, Drawing 512904, Revision 15, Mechanical Air Monitoring Technical Support Center and Post-Accident Sampling System Air Flow Diagrams ML23241A053 ML23241A054 ML23241A055 ML23241A056 ML23241A057 ML23241A058 ML23241A059 ML23241A060 ML23241A061 ML23241A062 ML23241A063 ML23241A064 ML23241A065 ML23241A066 ML23241A067 ML23241A068 ML23241A069 ML23241A070 ML23241A071 ML23241A072 ML23241A073 ML23241A074 ML23241A075 ML23241A076 ML23241A077 ML23241A078 ML23241A079 ML23241A080 ML23241A081 ML23241A082 ML23241A083 ML23241A084 ML23241A085 ML23241A086 ML23241A087 ML23241A088 ML23241A089 ML23241A090 ML23241A091 ML23241A092 ML23241A093 ML23241A094 ML23241A095 ML23241A096 ML23241A097 ML23241A098 ML23241A099 ML23241A100 ML23241A101 ... further results
References
DCL-23-044
Download: ML23241A273 (1)

Text

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'10

'11 AIR SID E SEAL OIL-- ------~-

PRESSUR E GAUGE RANGE OTO 160 PSIG P I -2 MAJN BEAR I NG OIL FEED

~

MAIN BEAR I NG-----

HYDROGEN SEAL-----

~~~B ~ ~~~ ~~:~I~~ L 06~A1~-- - --- ------

TANK LEVEL LS ---------- ---

'12

'13 HYDROGEN INN ER-COOLED TURBINE GENERATOR VENT _I.

TRAP

'1'1 COMB INED DEFOAMING TANK --- -

ORA IN AND GAS PRESSURE SENS ING L I NE HYDROGEN SI DE SEAL..------------

01 L DRAIN r-

---

D20 MA IN BEARING OIL RETURN f-- ---- H

___ J _____________________________ _

PRESSURE EQUAL l ZING 1

~~~~~~E~Q~1~~ z;N ~i 6~~A ~E0~ ~~E J~~~~S p~6~~ D~6 G~OR 208 FLOAT VA L VE OPENS WITH LOW OIL LEVEL.

JAC KS PROVIDED FOR OPENING OR CLOS 1 NG Vt VE IN EMERGENCY/

OPEN I NG OR CLOS I NG VA L VE IN EMERGENCY~

AIR SIDE SEAL OI L 21 I 2 I 0 PRESSURES i,

A IR SI DE-HYDROGEN S I DE DIFFERENT I AL PRESSURE 1

GAUGE.

RANGE MINUS 25 "

TO PL US 25 "

OPERATION OR MINUS 2" H,O i

2 15 J~P l P I 4 Al L___L__-,v,_, 234+

SEAL OIL THERMOMETER~

2 13 235 RANGE 30 TO l 80°F Tl - 2

~ :- ~ --~

I S-1/2 V 7 DIFFERENT I AL PRESSURE~ i ffi-SWITCH FOR HYDROGEN

~

V-3 SIDE DUPLEX FILTER ITYPli

[

HYDROGEN SIDE OUPLE X--------1-- --

F!L TER OC-663282-75 235C-B 35

~

J -3/4"

~~~~6~~~~ 5 FOR l V-0673 THERHOCOUPLES i

o THROTTLED POSIT I ON

-I--_

LOCK THIS VALVE I N ~ :

T ] - 5 240 PS - I 243

~~~~~~R~H~~ITCH 2 --------------+-

---

_ 242 D lFFER ENT I AL PRESS-URE DECR EASES TO SEA L----:

SUPPLY UN IT

'--- R V 63 PRESSURE REL I EF s

VALVE SET AT 150PSIG A2 clli PROVISIONS FOR CUSTOMERS THERMOCOUPLES FLUSHLINE 11 1 UJDORI J1.i SEA L OIL SUPP LY 2 17

'15

'16 MAIN O I L FEED BEAR I NG

~

A I R SIDE \

OIL INLET

)( - 297 FROM GEN BRG OIL ORA l N L OOP SEAL

~HYDROGEN SIDE H IGH LEVE L ALARMS ( 297C -BI 33 ) jl, 04 2008 ADM I F xC2 AL AN GL EN BARTA EL ECTR I CA L E 927 1 9/30/2009 REVISED PER DC2-SJ-50835-0 A-E D\..'~

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,~orESS]ONAL ENGI I\EER

,E DJSC.

rE" PE EXP.

'17

'18

'19 LEGEND

-IX}-

VALVE ( NORMALLY OPEN)

PRESSURE GAUGE VA L VE

( NORMAL L Y CLOSED)

~

THERMOMETER

-I>+

VA L VE

( NORMALLY THROTT LED I fee--

ELECTRICAL CONNECT I ON

~

CHECK VA L VE

[Q]

PRESSURE SW I TCH

+I+ REL! EF VA L VE clli II ORJF ICE

• ~ SOLENOID VALVE OIL ALARMS

[IQ]

DEFOAMJNG TANK L EVEL - HIGH

[DJ A I R SIDE SEAL OI L PUMP-OFF

[I]

SEA L OIL PRESSURE - LOW

[I))

HYDROGEN S I DE L EVEL - LOW

[8j SEA L OIL TURBINE BACKUP PRESSURE - LOW

@]

HYDROGEN S I DE SEAL O I L PUMP - OFF IT§]

AIR SIDE SEAL OI L BACK UP PUMP - RUNNING CON DE NS ED OPERA TI NG INSTRUC TI ONS SEE J NS TRUC TI ON BOOK FOR COMPLETE OPERAT I NG I NS TRUCT I ONS GENERA L - SEAL O I L PRESSURE MUST BE MAINTAINED AT THE HYDROGEN SEA L S WHEN HYDROGEN I S 1 N THE GENERA TOR OR WHEN THE SHAFT IS TURNING.

THE HYD ROGEN PRESSURE MA Y BE VARIED UP TO 75 PSIG.

SEAL OIL PRESSURE I S NORMA L LY MAINTAINED AT 12 PS I ABOVE THE HYDROGEN PRESSURE.

3 PSI IS REQUIRED TO MAINTAIN A SE AL WHEN RUNNING.

EXTRACTORS SHOU L D BE OPERA TED CONTINUOUSLY WHEN THE I S FI LL ED WITH HYDROGEN.

HYDROGEN SHOU L D BE PURGED FROM THE GENERATOR BEFORE MAIN OIL RESERVOIR I S DRAINED.

~ ~~~~~x T6 I ~ ~~~~u~~~6~ o~A~~

L o~/!~~2~6 ~:~R ELEMENT REPLACEMENT.

SEAL O I L SUPPLY - EMERGENCY SOURCES MAIN OIL PUMP ON TURB I NE SHAFTl SEAL OIL BACKUP PUMP WI LL MAINTAIN 75 PSIG ON MA IN O I L RESERV I OR HYDROGEN PRESSURE AIR S ID E SEAL OIL BACKUP PUMP TURNING GEAR BEARING O I L PUMPS-W I L L MAINTA I N 2 PSIG HYDROGEN PRESSURE THE TURB INE BACKUP REGULATOR VA L VE 264 OPENS WHEN THE DIFFEREN-T I AL PRESSURE AT THE SEALS DECREASES TO 8 PSI.

THEN I F THE SEAL D IFFERENT I AL PRESSURE DECREASES TO 5 PSI, PRESSURE SWITCH @]

ACTIVATES THE AIR SIDE SEAL OI L BACKUP PUMP ON THE SEAL OIL UNIT MID THE DIFFERENTIAL PRESSURE JS RESTORED TO 12 PSI.

THE NEXT AVAILABLE SOURCES OF EMERGENCY OIL AF TER THE AIR SIDE SEAL OI L BACKUP PUMP ARE THE TURNING GEAR BEARING O I L PUMPS ON TH E MAIN O I L RESERVIOR.

THESE CAN MA I NTAIN A HYDROGEN PRESSURE OF 2 PSIG ONL Y.

WHEN THE AIR SIDE SEAL Oi l BACKUP PUMP IS RUN-HYDROGEN PRESSURE SHOULD BE REDUCED TO 2 PSIG I F THE SEAL PUMP ON THE RESERVIOR IS NOT AVAILABLE.

TO PLACE EQUIPMENT IN OPERATION-SET VALVES AS INDICATED.

START A IR SIDE SEAL OIL PUMP ANO FI LL DEFOAMING TANKS ANO HYDROGEN S!DE DRA I N REGULATOR.

START HYDROGEN SIDE SEAL OIL PUMP.

EQUIP-MENT IS THEN IN NORMAL OPERATION.

UN I T 2 DIAB LO CANYON POWER PLANT - PG&E CO, TURBINE AND GENERATOR ASSOCIA TED SYSTEMS DRAWING SHEET PAGE REV 108022 4

0 40 E

D C

B A