ML090400737

Entergy Nuclear Northeast - 2-ECA-0.0, Revision: 2; Loss of All AC Power

ML090400737
Person / Time
Site:	Indian Point
Issue date:	04/23/2008
From:	Entergy Nuclear Northeast
To:	Engineering Region 1 Branch 1
John Richmond
References
2-ECA-0.0, Rev 2
Download: ML090400737 (29)

Text

Procedure Use Is: Control Copy:

0 Continuous Nuclear Northeast Reference Effective Date: . I -

0 Information 2-ECA-0.0, Revision: 2 Approved By:

PARTIAL REVISION

Number: iitle: Revision Number:

2-ECA-0.0 LOSS OF ALL AC POWER REV. 2 A. PURPOSE This procedure provides actions t o respond to a loss of all AC power.

B. SYMPTOMS OR ENTRY CONDITIONS 1 ) The symptom of a loss of all AC power is the indication that all 480V busses are de-energized.

2) This procedure is entered from 2 - E - 0 , REACTOR TRIP OR SAFETY INJECTION, Step 3, on the indication that all 480V busses are de-energized.

C. ADVERSE CONTAINMENT CONDITIONS EOP values for adverse containment should be used if either o f the following conditions exist:

o Containment radiation levels greater than 1E5 R/hr.

- OR -

o Containment pressure greater than 4 psig.

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2- E C A - 0. O LOSS OF ALL AC POWER REV. 2 I. V e r i f v Reactor TriD: Manually trip reactor.

o Reactor trip breakers - OPEN o Neutron flux - DECREASING o Rod bottom lights - LIT o Rod position indicators - AT ZERO

2. V e r i f v T u r b i n e Trio:

a. All turbine stop valves - a. Manually trip t u r b i n e . LE CLOSED turbine will 4 O

J

! trip, close MSIVs.

IF MSIVs can

- NOi b e closed, THEN manually run back turbine.

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ACTION/EXPECTED RESPONSE

3. Check If RCS Is Isolated:

a . PRZR PORVs - CLOSED a. E PRZR pressure less than 2335 psiy, THEN manually close PORVs.

b. Letdown isolation valves - b. Manually close valve.

CLOSED 0 LCV-459 o 200A o 2008 0 2OOC

c. Excess letdown isolation valve c. Manually close valve.

- CLOSED o 213

4. Verify AFW Flow - GREATER THAN 400 GPM:

a . Turbine-driven AFW pump a. Manually open steam supply RUNNING reyulator valve:

0 PCV-1139

b. Manually align turbine-driven AFW pump FCVs as necessary

c. Adjust steam supply speed control valve as necessary:

o HCV-1118 3 of 28

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2 - ECA-O . O LOSS OF ALL AC POWER REV. 2 f f * * *

• l . * * * * * * . . * ~ l f * * , * * * )

• t * . t t . t

• CAUTION

• The l o a d on t h e d i e s e l g e n e r a t o r s s h o u l d r e m a i n l e s s t h a n 1650 KW b u t may *

• b e i n c r e a s e d t o 2000 KW f o r a maximum o f 2 h r s i n any 2 4 h r p e r i o d . *

• * * ~ * * * * *

• f * * *

• f

• f ~

• f . t t * * * * * * ~ ~ ~ ~ * * ~ * ~ ~

5. T r y To R e s t o r e Power t o Anv 480V

&.L a . E n e r g i z e 48UV b u s w i t h d i e s e l generator:

1 ) Check d i e s e l g e n e r a t o r ( s ) - 1 ) Emergency s t a r t d i e s e l RUNNING generator(s1:

a ) M a n u a l l y a c t u a t e SI 2 ) V e r i f y 480V bus - 2) M a n u a l l y e n e r g i z e 480V b u s AUTOMATICALLY E N E R G I Z E D from running diesel generator.

This Step continied on the next page.

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2-ECA-0.U LOSS UF ALL AC POWER REV. 2

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STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED IF 48UV bus can NOT be energized from diesel generator(s1, iHEN perform the following:

a ) Locally trip running diesel generator(s).

b f Contact Con Ed UU to determine if 138KV or 13.8KV power readily available.

c) E outside power is NOT readily available, THEN perform the following:

1 . Start Appendix R DG per:

0 2-SOP-27.6, UNIT 2 APPENDIX R UIESEL GENERATOR OPERATION

2. Dispatch NPU to black start a GT per:

0 2-SOP-27.5.3, BLACK START OF GAS TURBINE 1, 2, 3.

3. Go to Step 6. OBSERVE CAUTIONS PRIOR TU STEP 6.

d) E outside power is readily available, THEN attempt to manually energize 48UV bus using the following:

0 2-AUP-138KV-I, LOSS OF POWER TO 6.9KV BUS 5 AND/OR 6.

0 2-AOP-48UV-1, LOSS OF 48UV BUS.

T h i s Step continued on t h e next page.

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2-ECA-0.0 LOSS OF ALL AC POWER REV. 2 b . Check 480V b u s s e s - AT LEAST b. Go t o S t e p 6. O B S E R V E ONE E N E R G I Z E D : CAUTIONS P R I O R TO STEP 6 o 2A AND 3A

- OR 0 5P OR o 6A c . S t a r t one s e r v i c e w a t e r pump on t h e e s s e n t i a l header t o support running diesel generator

d. R e t u r n t o p r o c e d u r e and s t e p i n e f f e c t and i m l e m e n t FRPs 6 o f 28

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2- ECA-0. O LOSS OF ALL AC POWER REV. 2 STEP CAUTION f I

• o When power i s r e s t o r e d t o any 480V b u s , r e c o v e r y a c t i o n s s h o u l d c o n t i n u e s t a r t i n g w i t h S t e p 24.

+

• o If an S I s i g n a l e x i s t s or i f an SI s i g n a l i s a c t u a t e d d u r i n g t h i s

• p r o c e d u r e , i t s h o u l d b e r e s e t ( r e f e r t o S t e p 1 8 b ) t o p e r m i t manual

' l o a d i n g o f e q u i p m e n t on a 480V b u s .

' o I f a d i e s e l g e n e r a t o r i s s t a r t e d , a s e r v i c e w a t e r pump s h o u l d be

• s t a r t e d on t h e e s s e n t i a l header t o p r o v i d e d i e s e l g e n e r a t o r c o o l i n g .

f

• o I f a p a r t i a l t r a i n ( b u s 2A o r b u s 3 A ) i s e n e r g i z e d , s a f e g u a r d s

• e q u i p m e n t on t h e e n e r g i z e d b u s i n c l u d i n g R C P s e a l c o o l i n g s h o u l d be *

• p l a c e d i n PULLOUT or i s o l a t e d .

1 *

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• f f *

• f

• f f

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• l f * * * * . *

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6. P l a c e F o i l o w i n q Eauioment S w i t c h e s I n PULLOUT P o s i t i o n :

o C o n t a i n m e n t s p r a y pumps o S I pumps o FCUs o M o t o r - d r i v e n AFW pumps o T u r n i n g g e a r o i l pump o B e a r i n g o i l pump o T u r b i n e a u x i l i a r y o i l pump o CCW pumps o RHR pumps 7 o f 28

2 - ECA-0.0 LOSS OF ALL AC POWER REV. 2 This Step contiiiiied on the next page.

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8. D i s D a t c h P e r s o n n e l To L o c a l l v C l o s e V a l v e s To I s o l a t e R C P S e a l s And P l a c e V a l v e S w i t c h e s I n CLOSED P o s i t i o n :

o RCP s e a l r e t u r n i s o l a t i o n v a l v e outside containment:

0 MOV-222 o RCP seal i n j e c t i o n i s o l a t i o n valves outside containment:

0 MOV-250A o MOV-250B 0 MOV-250C o MOV-2500 o RCP t h e r m a l b a r r i e r CCW r e t u r n i s o l a t i o n valve outside containment:

0 MOV-789 10 o f 28

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2-ECA-O . O LOSS OF ALL AC POWER REV. 2

9. Check If CST Is Isolated From Hotwell :

a. Verify condenser hotwell a. valve(s1 open or position isolation valves - CLOSED: not known, THEN dispatch personnel to locally close o LCV-1128 valve(s). valve(s1 can NOT 0 LCV-1128A be closed, iHEN locally close 0 LCV-1129 associated isolation valve(s1:

o CD-6 o CT-8 o C T - 7 for LCV-1128 and LCV-1128A.

o CD-5 f o r LCV-1129.

b. Place condenser hotwell isolation valve controllers in MANUAL:

o LCV-1128 o LCV-1128A 0 LCV-1129

10. Check SG Status: Manually close valves. E valves can be manually closed,

a. MSIVs - CLOSED locally close valves.

b. Main FW regulating and bypass Locally close MSIVs as necessary valves - CLOSED per 2-SOP-ESP-001, LOCAL EQUIPMENT OPERATION AND

c. Blowdown isolation valves COMPENSATORY ACTIONS.

CLOSED 1 1 of 28

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2-ECA-O .D LOSS OF ALL AC POWER REV. 2

11. Check If Aiiv SG Is Faulted:

a . Check pressures in all SGs - a. Go to SteD 12 o ANY SG PRESSURE DECREASING IN AN UNCONTROLLED MANNER

- OR -

o ANY SG COMPLETELY DEPRESSURIZED

b. Isolate faulted S G ( s ) : b. Manually close valves. 1_E valves can NOT b e closed, THEN o Isolate AFW flow dispatch NPO to attempt to locally close valves or o Dispatch NPO to close steam associated block valves.

supply header valves t o turbine-driven AFW pump from faulted S G ( s ) :

o MS-41 ( S G 2 2 )

o M S - 4 2 (SG 23) o Verify SG atmospheric steam dumDs - CLOSED 12 of 28

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2 - ECA-0.0 LOSS OF ALL AC POWER REV. 2

12. Check I f SG Tubes A r e I n t a c t : Try t o i d e n t i f y ruptured SG(s).

C o n t i n u e w i t h S t e p 13. O B S E R V E o Main steamline r a d i a t i o n C A U T I O N P R I O R TO STEP 13. WHEN r e c o r d e r ( R - 2 8 , R-29, R - 3 0 and r u p t u r e d S G ( s ) i d e n t i f i e d , THEN R - 3 1 ) - NORMAL i s o l a t e ruptured SG(s):

o Condenser a i r e j e c t o r r a d i a t i o n o I s o l a t e AFW f l o w r e c o r d e r ( R - 4 5 ) - NORMAL o D i s p a t c h NPO t o c l o s e s t e a m o SG blowdown r a d i a t i o n r e c o r d e r s u p p l y header v a l v e s t o

( R - 4 9 ) - NORMAL t u r b i n e - d r i v e n AFW pump f r o m ruptured SG(s):

o NO SG LEVEL I N C R E A S I N G I N AN UNCONTROLLED MANNER 0 MS-41 (SG 22) 0 MS-42 (SG 2 3 )

o Adjust ruptured SG(s) a t m o s p h e r i c s t e a m dump c o n t r o l l e r setpoint t o 74%,

1030 p s i g .

WHEN r u p t u r e d SG p r e s s u r e l e s s t h a n 1030 p s i g . THEN v e r i f y r u p t u r e d SG a t m o s p h e r i c s t e a m dump c l o s e d . 1+ NOT c l o s e d ,

THEN p l a c e c o n t r o l l e r i n manual and c l o s e v a l v e . I F v a l v e c a n

-NOT be c l o s e d , locally i s o l a t e oDen v a l v e .

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2-ECA-Or 0 L O S S O F A L L AC POWER REV. 2 14 o f 28

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2-ECA-O . 0 LOSS OF ALL AC POWER REV. 2 15 o f 28

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2-ECA-0.0 LOSS OF ALL AC POWER REV. 2

• o SG pressures should NOT b e decreased to less than 110 psig to prevent I

• injection o f accumulator nitrogen into the RCS. I I *

• o SG narrow range level should be maintained greater than 10% ( 2 7 % FOR f

• ADVERSE CONTAINMENT) in at least one intact SG. If level can NOT b e f

• maintained, SG depressurization should b e stopped until level is

• restored in at least one SG.

~ f f f .

• f f

• t * * * ~ f f f

• f *

• t * * * ) t l l t l

• l f t *

• l

• I NOTE o The SGs should b e depressurized at a rate sufficient t o maintain a cooldown rate in the RCS cold legs less than 100°F per hour. This will minimize RCS inventory loss while cooling the RCP seals in a controlled manner .

o PRZR level may b e lost and reactor vessel upper head voiding may occur due to depressurization of S G s . Depressurization should NOT be stopped t o Drevent these occurrences.

16. Deoressurire Intact SGs To 210 DSiq:

a. Check SG narrow range levels - a. Perform the following:

GREATER THAN 10% (27% FOR ADVERSE CONTAINMENT) in at 1 ) Maintain maximum AFW flow least one SG until narrow range level greater than 10% (27% FOR ADVERSE CONTAINMENT) in at least one SG.

2) Continue with Step 1 7 .

WHEN narrow range level greater than 10% (27% FOR ADVERSE CONTAINMENT) in at least one SG, THEN do Steps 16b through 16e.

This Step coniinued on t h e n e x t page.

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2 -ECA-O . O LOSS OF ALL AC POWER REV. 2 b . M a n u a l l y dump s t e a m u s i n g SG b . L o c a l l y dump s t e a m u s i n g SG a t m o s p h e r i c s t e a m dumps t o a t m o s p h e r i c s t e a m dumps:

m a i n t a i n c o o l d o w n r a t e i n RCS c o l d l e g s - LESS THAN 100"FiHR o R e f e r t o 2-SOP-ESP-001, LOCAL EQUIPMENT O P E R A T I O N AND COMPENSATORY A C T I O N S for l o c a l o p e r a t i o n as n e c e s s a r y .

c . Check RCS c o l d l e g c. Perform t h e following:

t e m p e r a t u r e s - G R E A T E R THAN 325" F 1 ) C o n t r o l SG a t m o s p h e r i c s t e a m dumps t o s t o p SG d e p r e s s u r i r a t i on.

2) Go t o S t e p 1 7 .

d . Check SG p r e s s u r e s - LESS THAN d . C o n t i n u e w i t h S t e p 1 7 . WHEN 210 P S I G SG p r e s s u r e s d e c r e a s e t o l e s s t h a n 210 p s i g , THEN d o S t e p 16e.

e . M a n u a l l y c o n t r o l SG e . L o c a l l y c o n t r o l SG a t m o s p h e r i c a t m o s p h e r i c s t e a m dumps t o s t e a m dumps t o m a i n t a i n SG m a i n t a i n SG p r e s s u r e s a t pressures a t 210 psig:

210 p s i 0 o R e f e r t o 2-SOP-ESP-001, LOCAL EQUIPMENT O P E R A T I O N AND COMPENSATORY ACTIONS for l o c a l o p e r a t i o n as n e c e s s a r y .

17. Check R e a c t o r S u b c r i t i c a l : C o n t r o l SG a t m o s p h e r i c s t e a m dumps t o s t o p SG d e p r e s s u r i z a t i o n o I n t e r m e d i a t e range channels - and a l l o w RCS t o h e a t up.

ZERO OR NEGATIVE STARTUP RATE o Source r a n g e c h a n n e l s - Z E R O OR N E G A T I V E STARTUP RATE

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2-ECA-0.0 LOSS OF ALL AC POWER REV. 2 CAUTION f

Placing key switches to DEFEAT will prevent auto SI actuation.

• f * *

• f f t * * * * * *

• f

• f l *

• f

• t t t * * * * * * * * * * * * * * ~ * ~ ~ ~

I I/ Depressurization of SGs will result in SI actuation.

t o permit manual loading of equipment on 480V bus.

SI should b e reset 18 Check SI Sianal Status:

a. SI - HAS BEEN ACTUATED a . Go to Step 22. WHEN SI is actuated, THEN do Steps 18b, 19, 20 and 21.

b . Reset SI:

1 ) Check a l l CCW pumps 1 ) Place non-running CCW pumps RUNNING CCR control switches in PULLOUT.

2) Place controls for main AND bypass feedwater regulating valves t o CLOSE 3 ) Verify Automatic Safeguards Actuation key switches on Panel SB-2 in DEFEAT position:

o Train A SIA-1

- AND -

o Train B SIA-2 4 ) One at a time, depress Safety Injection reset buttons (Panel SB-2):

o Train A o Train B

5) Verify Train A AND B - RESET 5 ) Verify Relays reset ( T o p of Safeguards Initiation Racks 1-1 AND 2-11:

0 SIA-1 o SIM-1 0 SIA-2 o SIM-2 18 of 28

2-ECA-0.0 LOSS OF ALL AC POWER REV. 2 ACTION/EXPECTED R E S P O N S E ATTACHMENT 1 p r o v i d e s a l i s t o f Phase A v a l v e s .

19. V e r i f y Containment I s o l a t i o n Phase A :

a. Phase A - ACTUATED a. M a n u a l l y a c t u a t e phase A .

0 T r a i n A master r e l a y C A I (above rack E )

o T r a i n 8 m a s t e r r e l a y CA2 (above rack F )

b . Phase A v a l v e s - CLOSED b. Manually close valves. IF v a l v e s c a n NOT be m a n u a l 5 c l o s e d , THEN l o c a l l y c l o s e Val v e s .

c. IVSW valves OPEN: c . M a n u a l l y open v a l v e s .

o 1410 o 1413 o SOV-3518 o SOV-3519 d . WCP v a l v e s OPEN: d . M a n u a l l y open v a l v e s .

o PCV 1238 o PCV 1239 o PCV 1240 o PCV 1241 e . P l a c e p e r s o n n e l AND e q u i p m e n t hatch solenoid control s w i t c h e s t o INCIDENT on SM panel 1 9 o f 28

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2-ECA-0.0 LOSS OF ALL AC POWER REV. 2

20. Verify Containment Ventilation Isolation:

a. Containment purge valves - a. Manually close valves.

CLOSED:

IF valves can

- NOT be closed, o FCV-1170 iHEN close valves from fan o FCV-1171 room.

o FCV-1172 o FCV-1173 IF valves can

- NOT be closed, inEN dispatch operator and HP personnel to close outside valves by isolating instrument air:

0 FCV-1171, IA-780 0 FCV-1173, IA-779 b . Containment pressure relief b . Manually close valves.

valves - CLOSED:

IF valves can

- NOT be closed, o PCV-1190 iHEN close valves from fan 0 PCV-I191 room.

0 PCV-1192 IF valves can NOT be closed, THEN dispatch operator AND H P personnel to close outside valves by isolating instrument air:

0 PCV-1191, IA-777 o PCV-1192, IA-778 IF containment pressure relief can &QJ. be isolated, jXJN-locally close the following valves ( F a n House 88 ft. e l ) :

0 UH-1013, P r e s s u r e Relief Fan Inlet Stop 0 UH-1014, Pressure Relief Fan Outlet stop 20of 28

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2 - ECA-0 . O LOSS O F ALL AC POWER REV. 2 2 1 . Check C o n t a i n m e n t P r e s s u r e - HAS Perform t h e following:

R E M A I N E D LESS THAN 24 P S I G a .V e r i f y c o n t a i n m e n t sDraY signai actuated. U ' THEN

~ ,

manually actuate.

b . V e r i f y containment i s o l a t i o n Phase B v a l v e s c l o s e d .

IFNOT, _ ~ THEN m a n u a l l y c l o s e valves.

IF valves

- can NOT be m a n u a l l y closed, TnEN locally close valves.

c. Verify IVSW i s o l a t i o n valves open:

o 7864 o 7865 o 7866 o 7867 d . One a t a t i m e , d e p r e s s Containment Spray Reset Pushbuttons:

o Spray SYS Reset T r a i n A o Spray SYS Reset T r a i n B 2 2 . Check C o r e E x i t TCs - LESS THAN -I F Core E x i t temperatures greater 1200°F t h a n 1 2 0 0and ° F i n c r e a s i n g , THEN 40 t o S A C R G - I , S E V E R E ACCIDENT CONTROL ROOM GUIDELINE I N I T I A L RESPONSE, S t e p 1.

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2-ECA-O . O LOSS OF ALL AC POWER REV. 2 o 2A AND 3 A 1 )Check s t a t u s of local OR - actions :

o 5A o AC power r e s t o r a t i o n o RCP s e a l i s o l a t i o n .

- OR o DC power s u p p l y .

o 6A 2) Check s t a t u s o f a u x i l i a r y b o r a t i o n systems:

o BAST t e m p e r a t u r e g r e a t e r t h a n 155°F.

I F temperature less t h a n 155°F. r e q u e s t TSC t o p r o v i d e emergency p o w e r supply for b o r i c a c i d heat trace t o prevent c r y s t a l 1i r a t i o n .

3 ) Check s t a t u s of s p e n t fuel cooling:

o Spent f u e l p i t l e v e l greater than low l e v e l alarm.

I F level less than l o w l e v e l a l a r m , THEN d i s p a t c h NPO t o makeup t o t h e spent f u e l p i t as necessary.

4 ) Open d o o r s o n a l l c o n t r o l room c a b i n e t s .

5 ) D i s p a t c h NPO t o open AFW pump room r o l l - u p d o o r .

6 )R e t u r n t o S t e p 11. O B S E R V E CAUTION P R I O R TO STEP 11.

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2 - E C A - O. O LOSS OF ALL AC POWER REV. 2 CAUTION *

• The loads placed on the energized 480V bus should NOi exceed the capacity *

• of the power source.

f f * . f * * * .

• f t f * . l , *

• f . + I t t * *

• t * *

• t t t * ~ * * ~ * * * ~ * * * * * * *

• NOTE ATTACHMENT 2 provides a list of 480V equipment load ratings.

I 25. Verify Service Water System Ouerati on :

a . Verify a t least one pump -

RUNNING ON ESSENTIAL HEADER a . Manually start pump.

I b. Service water valves from b. Locally open valves as 2 3 of 28

Number: l~itie: llev is i o n Nllmber :

2 -ECA-0.0 LOSS OF ALL AC POWER REV. 2 a1 ternate power supply per 2-SOP-27.1.6, INSTRUMENT BUS, DC OISTRIBUTION SYSTEM AND PA SYSTEM INVERTER

d. 23 Static Inverter on alternate power supply per 2-SOP-27.1.6 o Bus 2A:

a. MCCs:

o MCC 24 o MCC 24A

b. 22 Battery Charger in service

c. 22 Static Inverter on alternate power supply per 2-SOP-27.1.6

d. PA System Inverter on alternate power supply per 2-SOP-27.1.6 T h i s S t e p c o n t i n u e d on t h c n r x t p a g e .

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2-ECA-0.0 LOSS OF ALL AC POWER REV. 2 o Bus S A :

a . MCCs:

o MCC 26B o MCC 27A b . 24 Battery Charger in service

c. 24 Static Inverter on alternate power supply per 2-SOP-27.1.6 25 of 28

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2 - ECA-0.0 LOSS OF ALL AC POWER REV. 2 NOTE I f RCP s e a l c o o l i n g was p r e v i o u s l y i s o l a t e d , f u r t h e r c o o l i n g of t h e RCP s e a l s w i l l be e s t a b l i s h e d by n a t u r a l c i r c u l a t i o n cooldown as d i r e c t e d i n subsequent p r o c e d u r e s .

27. S e l e c t Recovery Procedure:

a . Check RCS s u b c o o l i n g based on a . Go t o 2-ECA-0.2, LOSS O F ALL c o r e e x i t TCs - GREATER THAN AC POWER RECOVERY WITH SI VALUE OBTAINED FROM TABLE: REQUIRED, S t e p 1 .

0 - 400 52 ( 8 3 )

401 - 800 36 ( 4 9 )

801 - 1200 23 ( 3 0 )

1201 - 2500 19 ( 2 6 )

b . Check PRZR l e v e l - GREATER b. G O t o 2-ECA-0.2, LOSS OF ALL THAN 14% ( 3 3 % FOR ADVERSE AC POWER RECOVERY WITH SI CONTAINMENT) REOUIRED, S t e p 1 .

c . Check i f S I equipment - C. GO t o 2-ECA-0.1, LOSS O F ALL ACTUATED WITH RESULTANT AC POWER RECOVERY WITHOUT SI INJECTION FLOW UPON AC POWER REQUIRED, S t e p 1.

RESTORATION

d. Gn to

~~ 2-ECA-0.2. LOSS OF All AC POWER RECOVERY WITH SI REQUIRED, S t e p 1 END 26 of 28

Number: 1itie: llevisiorl Number:

2-ECA-0.0 LOSS OF ALL AC POWER REV. 2 ATTACHMENT 1 (Attachment page 1 o f 1 )

CONTAINMENT ISOLATION VALVES

1. The followina valves will close on Phase A isolation:

VALVE NAME VALVE NUMBER(s 1 CCW from excess letdown Hx 796, 793 CCW t o excess letdown Hx 798, 791 Vent header from RCDT 1786, 1787 Gas analyzer PRT 548, 549 Gas analyzer RCDT 1788, 1789 Letdown from regenerative HX 201, 2 0 2 Letdown oriface control stop valves ZOOA, 2008, 2OOC Make-up to P R T 519, 552 Containment sump pumps to WDS - hold-up tank 1723, 1728 Instrument air to containment PCV - 1228 RCDT to WDS - hold-up tank 1702, 1705 SG blowdown and sampling system PCV-1214, 1214A PCV-1215, 1215A PCV-1216, 1216A PCV-1217, 1217A Radiation monitor return t o containment PCV-1234, 1235 PCV-1236, 1237 Accumulator sampl es 9566, 956H Sample - pressurizer steam 956A, 956B Sample - pressurizer liquid 956C. 9560 Sample - RCS loops 21, 22, 23 MOV-956E, 956F SJAE to containment 1229, 1230 Hi-Rad sample system return to containment sump MOV-4399, 5132 Recirculation pump discharge sample line MOV-YYOA, YYOB Accumulator NZ Supply Line Stop 863

2. The followinq valves will close on Phase B isolation:

VALVE NAME VALVE NUMBER(s1 Component cooling to RCS pumps MOV-769, 797 Component cooling from RCS thermal barrier return MOV-789, FCV-625 Component cooling from RCS motor bearing return MOV-786, 784 Seal water return containment isolation valve MOV - 222 END 27 of 28

iitle: Revision Number':

~

Nunibf r :

2 - ECA-O . O LOSS OF A L L AC POWER REV. 2 ATTACHMENT 2 ( A t t a c h m e n t page 1 of 1) 4 8 0 V EQUIPMENT LOAD R A T I N G S 1 Use the fol!owinq t a b l e t o d e t e r m i n e 48OV e a u i o m e n t l o a d r a t i n q s :

2 2 DG 23 DG EOUIPMENT BUS 2 A BUS 3 A BUS 6 A 2 1 S E R V I C E WATER PUMP 282 KW 22 S E R V I C E WATER PUMP 282 KW OR 2 8 2 KW 23 S E R V I C E WATER PUMP 282 KW 24 S E R V I C E WATER PUMP 282 KW 2 5 S E R V I C E WATER PUMP 282 KW OR 282 KW 26 S E R V I C E WATER PUMP 282 KW PRLR CONTROL HEATERS 2 7 7 KW 2 1 PRZR BU HEATERS 5 5 4 KW 22 PRZR BU HEATERS 485 KW 23 PRZR BU HEATERS 485 KW 2 1 AFW PUMP 384 KW 23 AFW PUMP 384 KW 2 1 F A N COOLER U N I T 250 KW 2 2 F A N COOLER U N I T 2 5 0 KW 23 F A N COOLER U N I T 2 5 0 KW 24 F A N COOLER U N I T 250 KW 2 5 F A N COOLER U N I T 250 KW 2 1 S I PUMP 316 KW 22 S I PUMP 316 KW 316 KW 23 S I PUMP 345 KW 2 1 SPRAY PUMP 350 KW 22 SPRAY PUMP 3 5 0 KW 2 1 RHR PUMP 303 KW 22 RHR PUMP 303 KW 2 1 CHARGING PUMP 1 5 0 KW 2 2 CHARGING PUMP 1 5 0 KW 23 CHARGING PUMP 1 5 0 KW 2 1 R E C I R C PUMP 299 KW 2 2 R E C I R C PUMP 299 KW 2 1 CCW PUMP 228 KW 2 2 CCW PUMP 228 KW 23 CCW PUMP 2 2 8 KW 2 1 L I G H T I N G TRANSFORMEF 1 5 0 KW ( N ) 150 KW ( E )

2 2 L I G H T I N G TRANSFORMEF 225 KW 23 L I G H T I N G TRANSFORMEF 225 KW T U R B I N E AUX O I L PUMP 112 KW S T A T I O N A I R COMPRESSOR 93 KW END 28 o f 28