Text

Rev 6 to Abnormal Operating Procedure 18031-C, Loss of Class 1E Electrical Sys
	ML20092F820
Person / Time
Site:	Vogtle
Issue date:	06/14/1989
From:	; GEORGIA POWER CO.
To:	;
Shared Package
ML20092F288	List: ML20092F527; ML20092F560; ML20092F569; ML20092F576; ML20092F586; ML20092F604; ML20092F611; ML20092F621; ML20092F636; ML20092F639; ML20092F643; ML20092F654; ML20092F661; ML20092F665; ML20092F672; ML20092F682; ML20092F684; ML20092F690; ML20092F713; ML20092F716; ML20092F722; ML20092F734; ML20092F740; ML20092F752; ML20092F757; ML20092F759; ML20092F783; ML20092F802; ML20092F807; ML20092F813; ML20092F820; ML20092F828; ML20092F831; ML20092F848; ML20092F862; ML20092F874; ML20092F887; ML20092F899; ML20092F910; ML20092F942; ML20092F949; ML20092F956; ML20092F969; ML20092G036; ML20092G057; ML20092G067; ML20092G079; ML20092G081; ML20092G099; ML20092G696; ... further results
References
	CON-IIT05-003-024-90, CON-IIT05-023-90, CON-IIT5-23-90, CON-IIT5-3-24-90, RTR-NUREG-1410 18031-C, NUDOCS 9202190517
	Download: ML20092F820 (6)
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NUCLEAR OPERAJ10NS l80;l-c g

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W ABNORMAL' OPERATING PROCEDURE-3' 0 ag W

LOSS OF CLASS 1E ELECTRICAL SYSTMA No.

br:::=:: PURPOSE IC

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' This procedure addresses the locs of one train of either 4160V AC p

- or 430V AC Class lE Electrical System.

r nw d SWIPTOMS la.

Me Loss of offsite power to one train of IE Electrical System g

(IAA02, 1BA03, 2AA02, 2BA03) to tie on same train.

concurrent with diesel failure Electric fault on Unit 1 Switch

@e Unit 2Switchgear2AA02or2BA0hearlAA02or1BA03oron e

Loss of one train of 480V Class IE power.

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I 9202190517 920116 PDR ADOCK 05000424 S

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VEGP 18031-C

'6-2 of 5 ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED IMMEDIATE OPERATOP. ACTIONS-t CAUTION A Diesel Generator will be operating without NSCW cooling unless the associated train of 4160V 1E power is restored.

1.

IP a loss of a 4160V AC bus, 1.

Dispatch a PEO to sh*.c down THEN trip the affected the Diesel at the E: gine Diesel Generator by.

Control Panel.

depressing both EHERGENCY STOP Pushbuttons.

SUBSEQUENT OPERATOR ACTIONS

)

2.

Verify running or start 2.

Perform the following as l

the following unaffected required:

Train components:

a. Two NSCW Pumps.

a. Initiate 18021-C, LOSS OF NUCLEAR SERVICE COOLING WATER.

b. Two CCW Pumps.

b. Initiate 18020-C, LOSS OF COMPONENT COOLING

WATER,

c. Cne CCF, if PD Pump is

c. Initiate 18007-C, inoperable.

l

. CHEMICAL AND VOLUME i

CONTROL SYSTEM MALFUNCTION.

t

d. One ACCW Pump.

d. Initiate 18022-C, LOSS

, OF AUXILIARY. COMPONENT.

COOLING WATER.

e. Motor-Driven AFW Pump,

e. Verify that Turbine-if AFW System is initiated.

Driven AFW Pumpfis operating

f. ESF Chiller.

f. Restore ESF Chillers.

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VEGP 18031-C 6

3 of 3 ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE Train B components are shown in parenthesis.

i 3.

Verify the following 3.

Attempt to restore power to unaffected Train Class lE any Load Center not 480V Load Centers -

energized:

Energized:

a. Check Load Center UNIT 1 i

Overcurrent Relays reset, 1AB04 (lBB06)

b. Check Load Center e

1AB05 (lBB07) e overcurrent lock-out 1AB15 (lBB16) e relay reset.

e INB01 (lNB10)

c. Attempt one manual UNIT 2 reclosing of the Load

^

Center 480V AC Feeder a

2AB04 (2BB06)

Breaker, 2AB05 (2BB07) e 2AB15 (2 bbl 6) e 2NB01 (2NB10) e l

l 4.

Verify the following 4

Dispatch an operator to unaffected MCCs energized i

by observing - No Trouble attempt to restore power to Alarms On The QEABt any MCC not energized:

UNIT 1 Attempt one reclosure of the 480V feeder breaker

~

lABA (1BBA) from the respective 480V e

1ABB (lBBB)

Load Center.

l e

i 1ABC (lBBC) e i

e 1ABD (lBBD) e 1ABE (IBBE) l 1ABF (IBBF) e UNIT 2 2ABA (2DBA) e e

2ABB (2BBB) 2ABC (2BBC) e 2ABD (2BBD) e 2ABE (2BBE) e 2ABF (2BBF) e 1

"k it e t e

VEGP 18031-C 6

4 of 5 ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED 5.

Verify 125V DC Battery 5.

Evaluate selective load loads - Less Than The stripping for overloaded Following Limits:

batteries.

UNIT 1, 1AD1B 290 amps 1BDlB 290 amps e

e ICD 1B 100 amps e

i e

1DD1B 80 amps UNIT 2 2AD1B 290 amps e

2BDlB 290 amps e

2CDlB 100 amps e

e 2DD1B 80 amps 6.

Start one Boric Acid 6.

IP no Boric Acid Transfer Transfer Pump.

FUmp is operable AND boration is required, THEN open RWST To Charging Ep Suction Valve LV-0112D(E).

7.

Start one Reactor Make-up 7.

Verify Charging Pump Water Pump.

suction transfers to RWST on VCT LO-LO Level.

8.

Initiate applicable Technical Specification requirements.

9.

If necessary, notify maintenance to repair faulty equipment.

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VEGP 18031-C 6

5 of 5 ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED 10.

Verify the fault condition 10.

Return to Step 3.

cleared.

NOTE Actions in S tep 11 will result in a CVI, FHBI, and CRI actuation.

If DG output breaker did not close on undervoltage bus and offsite power is available, the sequencer will need to be reset in accordance with 13427, 4160V AC 1E ELECTRICAL DISTRIBUTION.

11 Restore the affected busses as follows:

Close normal incoming e

breaker by initiating 13427, 4160V AC lE ELECTRICAL DISTRIBUTION.

e Initiate 13429, 480V AC lE ELECTRICAL DISTRIBUTION.

12.

Initiate 13145, DIESEL GENERATORS and align the Train A(B) Diesel Generator for automatic s tarting.

13.

Restore Train A(B) components and AFW Pumps as required by current plant conditions.

14 Return to the Unit Operating Procedure currently in effect.

END OF PROCEDURE TEXT mm

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