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 ... further results
References
DCL-23-044
Download: ML23241A273 (1)

Text

'10 '11 '12 '13 '1'1 '15 '16 '17 '18 '19 LEGEND AIR SID E SEAL OIL-- - - - - - - ~ -

PRESSUR E GAUGE RANGE OTO 160 PSIG P I -2 HYD ROGEN I NN ER- COO LED

-IX}-

-I>+

VALVE VA L VE VA L VE

( NORMALLY OPEN)

( NORMAL L Y CLOSED)

( NORMALLY THRO TT LED I

~

fee--

PRESSURE GAUGE THERMOMETER ELECTRICAL CONNECT I ON TU RBI NE GENER ATOR MAJN BEAR I NG MAIN O I L FEED BEAR I NG

~ CHECK VA L VE

,, [Q] PRESSURE SW I TCH E OIL FEED ~ E

~ +I+ REL! EF VA L VE clli MAIN BEAR I NG - - - - -

A I R SIDE \

II ORJF ICE

• ~ SOLENOID VALVE O IL INLET HYDROGEN SEA L - - - - -

)( - 297 OI L ALAR MS

~~~B ~ ~~~ ~~:~I~~ L0 6~A1~-- - --- ------ FROM GEN BRG OIL

[IQ] DEFOAMJNG TANK L EVEL - HIGH ORA l N L OOP SEAL [DJ A I R SIDE SEAL OI L PUMP-OFF TANK LEVEL LS ---------- --- [I] SEA L OIL PRESSURE - LOW

[I)) HYDROGEN S I DE L EVEL - LOW COMB INED DEFOAMING TANK --- - ----------------- '

VENT _I.

~HYDROGEN SIDE H IGH LEVE L ALARMS ( 297C -BI 33 ) jl, [8j SEA L OIL TURBINE BACKUP PRESSURE - LOW TRAP ORA IN AND GAS PRESSURE @] HYDROGEN S I DE SEAL O I L PUMP - OFF

---

D20 J_____________________________ _

SENS ING L I NE MA IN BEARING IT§] AIR SIDE SEAL OI L BACK UP PUMP - RUNNING D HYDROGEN SI DE SEAL..------------

01 L DRAIN r-OIL RETURN f-- ---- H ___ D PRESSURE EQ UAL l ZING 1 6~~A ~E0~ ~~E J~~~~S p~6~~ D~6 G~OR 208 FLOAT VA L VE OPENS WITH LOW OIL CON DE NS ED OP ERA TI NG IN ST RUC TI ON S LEVEL. JAC KS PROVIDED FOR OPENING

~~~~~~E~Q~1~~ z;N~i OPEN I NG OR CL OS I NG VA L VE IN EMERGENCY~ OR CLOS 1NG V t VE IN EMERGENCY/ SEE J NS TRUC TI ON BOOK FOR COMPLETE OPERAT I NG I NS TRUCT I ONS AIR SIDE SEAL OI L  :-......... 21 I 2 I0 2 17 GENERA L - SEAL O I L PRESSURE MUST BE MAINTAINED AT THE HYDROGEN PRESSURES i, SEA L S WHEN HYDROGEN I S 1N THE GENERA TOR OR WHEN THE SHAFT IS TURNING.

A IR SI DE-HYDROGEN S I DE 1 THE HYD ROGEN PRESSURE MA Y BE VARIED UP TO 75 PSIG . SEAL OIL DIFFERENT I AL PRESSURE PRESSURE I S NORMA L LY MAINTAINED AT 12 PS I ABOVE THE HYDROGEN GAUGE . RANGE MINUS 25 "

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

TO PL US 25 "

OPERATION EXTRACTORS SHOU L D BE OPERA TED CONTINUOUSLY WHEN THE OR MINUS 2" H,O i 2 15 J ~P l I S FI LL ED WITH HYDROGEN.

PI 4 Al  : L___L__-,v,_, 234+ HYDROGEN SHOU L D BE PURGED FROM THE GENERATOR BEFORE MAIN OIL SEAL OIL THERMOMETER~  : 2 13 235 RESERVOIR I S DRAINED.

C RANGE 30 TO l 80°F Tl - 2 ~ :- ~ - - ~

I S- 1/2 V 7

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

L o~/!~~2~6 ~:~R ELEMENT REPLACEMENT . C DIFFERENT I AL PRESSURE~

SWITCH FOR HYDROGEN i

~

ffi- V-3 SIDE DUPLEX FILTER ITYPli [

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 HYDROGEN SIDE OUPLE X--------1-- - - AIR S ID E SEAL OIL BACKUP PUMP F!L TER OC-663282-75 235C -B 35 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 A T THE SEALS DECREASES TO 8 PSI. THEN I F THE SEA L

D IFFERE NT I AL PRESSURE DECREASES TO 5 PSI, PRESSURE SWITCH @]

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

~~~~6~~~~ 5 T HERHOCOUPLES FOR

-<li ' J -3/4" V-0673

~

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 LOCK THIS VALVE I N ~ T ] - 5 240  :

o PUMP ON THE RESERVIOR IS NOT AVAILABLE .

THROTTLED POSIT I ON  : -I--_ _..,.___ _ TO PLACE EQUIPMENT IN OPERATION-SET VALVES AS INDICATED. START A IR SIDE SEAL OIL PUMP ANO FI LL DEFOAMING TANKS ANO HYDROGEN PS - I  : 243 s S!DE DRA I N REGULATOR. START HYDROGEN SIDE SEAL OIL PUMP. EQUIP-MENT IS THEN IN NORMAL OPERATION.

~~~~~~R~H~~ITCH 2 --------------+- - - - - - -_ 242

'--- R V 63 PRESSURE REL I EF VALVE SET AT 150PSIG D lFFER ENT I AL PRESS-  : ---------------------------

A2 URE DECR EASES TO  :

clli PROVISIONS FOR CUSTOMERS

FLUSHLINE 11 1 THERMOCOUPLES UN I T 2 A UJDORI J1.i

DIAB LO CANYON POWER PLANT - PG&E CO,

TU RBINE AND GENERATOR ASSOCIA TE D SYSTEMS SEA L - - - - : SEA L OI L SUPP LY SUPPLY UN IT  : DRAWING SHEET PAGE REV 108022 4 0 40 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\..'~ ~E IV  ;:,~orESS]ONAL ENGI I\ EER  :,E DJSC. rE" PE EXP.