ML17223A577

Rev 10 to Emergency Procedure 1-0030143, Total Loss of Ac Power.

ML17223A577
Person / Time
Site:	Saint Lucie
Issue date:	03/07/1990
From:	FLORIDA POWER & LIGHT CO.
To:
Shared Package
ML17223A576	List: ML17223A577 ML17308A487
References
1-0030143, 1-30143, NUDOCS 9003210143
Download: ML17223A577 (45)

Text

Page 1 of 19 ZmZmmZ PROCE~

1W03 014 3 REV. 10 0 XDZ 1MKGDK POH1K & LIGHT KHPANY ST. IIJCZE UNIT 1 ZMEiKEKCE E%KGXURE NUMEER 1W030143 REVISION 10

'HOES TUIM NO. OF PAGES ~P 90032i0143 900307 PDR ADOCK 05000335 P

PDR

Page 2 of 19 XQZ ST. IJJCIE UNIT 1 EHERGENCL HKK3KURE NUMBER 1W030143, REVISICN 10 C

1. 0 SCOP/:

'Bxis procahme is to be used in the event of a total loss of both offsite AC power and lass of both Diesel Generators.

2. 0 @PIG@:

2.1 ass of power to 1A1 and 1B1 6.9'uses.

2.2 Loss of power to 1A2, IA3, 1B2, 1B3 and 1AB 4.16KV buses.

3.0 CA 3.1 Reactor trip. 3.1 Qm RCS flow 3.2 Turbine trip/Generator lockout. 3.2 Reactor trip 3.3 AFW auto actuation. 3.3 S/G level <30t 3.4 EGRV's aperate. 3.4 Pressurizer Pressure

>2400 psia

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Page 3 of 19 ST. IIJCZE UNIT 1 BKRQBKY EBDCEIXJRE NUMBER 1~30143, REVISION 10 0 '.0 4.1 Ensure all CE'A's on bottan and reactor txip breakers agen.

4.1 RD B-104 arxl RPS paneLs

~ of 4.2 Ensure 1C AM punt is restM'mg 4.2 RKR-102 S/G level.

4.3 Close HCVW8-3A anl HCVW8-1B 4.3 EGGB-106 (Hain Steam Isolation Valves) .

4.4 Isolate letdawn flmr by closing 4.4 RD:K-105 V-2515 and V-2516 (Latdawn Zsol) .

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Page 4 of 39 ST. LUCXE UNIT 1 3MZQENCY HK)CEIXEK NQMEg~ 1W030143, REVISICN 10 0

5.0 5.1 Ensure Generator OCB's and field breaker open.

5.2 Open 30102 (S.U. Transfoxmer to 3A1 6.9KV bus).

Open 30202 (S.U. Transfoxmer to 1B1 6.9KV bus) .

Open 20102 (S.U. Transformer to 3A2 4.16KV bus) .

Open 20302 (S.U. Transforaer to 1B2 4.16'us) .

5.3 Ensure D/G breakers open:

3A D/G: 20211 1B D/G: 20401 5.4 Ensure 3AB 4.16KV bus feeders are cgen:

20208, 20505 (3A3 4.16KV to 3AB 4.16KV bus) 20409, 20504 (3333 4.16'o 3AB 4.16KV bus) 5.5 Open 40103 (3A2 4.16KV feed to 1A1 L.C. - Lo side) .

Open 20110 (3A2 4.16'eed to 3A1 L.C. - Hi side) .

Opez. 40203 (3A3 4.16'eed to 3A2 L.C. - Lo side) .

Open 20210 (1A3 4.16KV feed to 3A2 L.C. - Hi side) .

5.6 Open 40403 (1B2 4.16RT feed to 33K L.C. Zo side) ~

Open 20310 (1B2 4.16'eed to 1B1 L.C. - Hi side).

Open 40503 (1B3 4.16KV feed to 1B2 L.C. - Za side).

Open 20402 (1B3 4.16KV feed to 1B2 L.C. - Hi side).

5.7 Ensure 3AB 480V Load Center feeders aze open+

40204, 40702 (3A2 480V L.C. to 3AB) 40706, 40504 (3B2 480V L.C. to 3AB) 5.8 Ensure NT08-3A and MV-08-1B pfain Steam isolation kppass valves) bath indicate closed or dic~tch an apexmtor to locally take ccatrol and close the valves.

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Page 5 of 19 ST. DJCZE UNIT 1 2ÃEKEKCY HQCEIXZK NUMBER 1~30143, REVISION 10 0

5.0 (cantirmed) 5.9 Open 3A and 1B Atmospheric Dump Valves to lift

~

reduce SG pressure below safety va1ve pressure (985 psig) .

If Instrument Air pressure has Mdl decayed, local 1~

carrtral capacity may be gained by opening crews-cannect frccn the station Air system, if statian air pressure is holding > Instrument air.

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to 5.10 Close FCV-23-3, 5, 4, and 6 (3A and 1B S/G Blowgun Isol) .

5.11 C1ose PCV-23-7 and 9 (3A and 1B S/G Blowdcwn Sample Isol) .

5 12 Close V&200 5201 I 5202 ~ 5203 J 5204 and 5205 g

(Primary Coolant and Pressurizer Sample Isol);

5.13 Zayleaent the Emergency Plan as necessary in accarchuxa with EPXP 310002IE, "Duties and Responsibilities of the urgency Caaxdinator."

5.14 Minimize Atnxrspheric Steam Dump use thexeby ensuring mininann RCS heat lass; ha@ever,

1. Maintain S/G pressure less than S/G safety setpoint (985 psig) .

2. With dec+easing RCS pressure, maintain hat leg ture (Gh) at least 20 F but less than 200 belier the saturatian tenperature th .Iw the atnespberic dung valves.

5.15 Verify by the following indications that natural circulation flmr has been established within agxraximately 15 minutes after RCP's were stopped.

1. Iuap De1ta T less than normal full pawer Delta T (<46 F) .

2. Cold leg (Tc) canstant or decnwasing.

3. Hat leg ('Ih) stable (i.e., nat:~di1y incr~ing) .

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Page 6 of 19 XLQP ST. IIJCZE UNIT 1 EMERGENCY HKIQUXRE NUMHK 1W030143, HEVLSIGH 10 0

5.0 (continued)

5. 15 (contirxml)

4. No abnormal differences between 'Ih RH)'s and Core Exit Gheraecouples (CEZs) .

5. RCS CET Suhcooling > 20'F per QSHS.

5. 16 If RCS pressure decreases to 1700 psia, verify receipt of block permissive annunciator (R-6) and block SIAS.

5.17 Natify system dispatcher of plant canditians and request most urgent priority in restcn~ off-site power+

5.18 If 1C AFW Puny is stopped or flaw is lost, then:

1. Reinitiate AFW flaw as scan as possible; however, do not exceed a flaw rate of 150 GER per affected S/G.

2. Limit feed flmr rate to 150 GBf per affected S/G until continuous feed flaw to the affected S/G has been maintaiixd for five minutes.

5.19 Use all available resauces to restnee ane Emergency Diesel Generator to operable status.

5.20 Assuming Unit 2 has hath diesels available, ane of these diesels may be cross-tied to Unit 1.

Refer to ApperxUx "A~~.

5.21 Rmn either Unit 1 diesel or off-site available, restore normal power using pcs's Appendix "8 "

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Page 7 of 19 .

TQg ST. IIJCIE UNIT 1 EMIR EÃCY HKCElXRE NUMBER 1M030143g EKVISIQN 10 0 AC AE%%ÃDIX A 2 D

1. Assuninp that both diesels are runrdap and supply~ loads on Unit 2 2A3 and 2B3 buses, select the diesel to be tied to .Unit 1.

2. Transfer loads to the other diesel, being careful not to exceed 659 amps, until the selected diesel is unloaded.

3. Perform the iniicated switchdsr~ an the electrical train that will cross-tie the diesel:

3.1 4.16KV Switchgear 2A3 (2B3) ~ggggf B TRAQf ggXX Qpen bracer and pull fuses on the fallowing:

1) 4.16KV Feed to 2AB 4.16KV bus 2-20208 2-20409

2) 4.16KV Feed to 2A2 (282) L.C. 2-20210 2-20402

3) 2A (2B) HPSI Punp 2-20201 2-20405

4) 2A (2B) ZPSZ Bmp 2-20202 2-20406 e vww 2-20203 2-20407

6) 2A3 (2B3) L.C. (Pressurizer Heaters) 2-20204 2-20403

7) CECM Cooling Fan 2HVE-21A (21B) 2-20205 2-20408

8) 2A (2B) CCW Bmp 2-20206 2-20404

9) 2A (2B) ICW Pump 2-20207 2-20410

10) 2A (2B) AFW Puny 2-20212 2-20412 3.2 4.16KV Switchy~r 2A2 (282)

Qpen breajcer and pull fuses an the fallowing:

2-20101 2-20301

1) 2A (2B) 2haciliaxy Transformer 1W86 1W84

2) 2A (2B) Startup Transfarnar 2-20102 2-20302

3) 2A1 (2A2) Circulating Water Puny 2-20103 2-20303

4) 2Bl (2B2) Circulatiap Water Bmy 2-20104 2-20304

5) S/G Blawdawn 480V KX XB9 2-20105

Page 8 of 19 ST. IOC3Z UNIT 1 KHERGBVCY E%KCECUEK NUMBER 1W030 143 g REVISION 10 0

APE%ÃDIX A (continued)

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6) 2A (2B) TCÃ Pump 2-20106 2-20306

7) 2A or 2C (2B or 2C) ~nsate Pump 2-20107 2-20307

8) 2A (2B) Heater Dzcdn Puap 2-20108 2-20308

9) 4.16KV Feed to 2A1 (2Bl) L.C. 2-20110 2-20310 3.3 4.16'wihdxpmr 2A4 (2B4)

1) Open and rack out breaker ¹ 1W90 1W82 (Feed fran IA (1B) Startup Transformer) . 2-20601 2-20705 /R10

2) Open and rack out breaker ¹ 1W88 1W80 (Feed fran 2A (2B) Startup Transformer) . 2-20605 2-20701,. /R10 ggg Breaker in either cubicle ¹5 or ¹1 may be used for next step.

3) Reaeve breaker fran cubicle ¹5 (or ¹1) and install in cubicle ¹3.

4) Push dawn and hold the '~

in cubicle ¹5 (or ¹1) prior to lever performing the next step.

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Page 9 of 19 TQ3P ST. ILJCXE UNIT 1 URGENCY PROCURE NUMEKR 1~30143 g REVISION 10 0

APE%5DZK A A

(continued)

3. (ccrrtiinued) h 'ZBBXH ~Bh& ~5K

5) Rack in and close breaker 4 2-20603 2-20703 in cubicle N3 (Tie hzealcer far Unit 1/Unit 2 Swgr.) .

It will be necessazy to hold the switch for breaker 2-20109 (2-20309) in the CXQSE positian in order to close breaker 2-20209 (2-20411) .

3. 4 Close breaker 2-20109 (2-20309)

{2A2/2A3 (2B2/2B3) tie hvmker] and hold in the CXCSE positian. 2-20109 2-20309 3.5 Close breaker 2-20209 (2-20411)

[2A2/2A3 (2B2/2B3) tie'reaker] and zelease switch for 2-20109 (2-20309) . 2-20209 2-20411 4.16KV hus 2A2 (2B2) is now enezgized.

3.6 Insert fuses and close breaker 5 2-20102 2-20302

[S.U. feed to 4.16KV hus 2A2 (2B2)].

3.7 4.16KV Switchgear 3A2 (1B2)

Open bzeakezs an the following:

1) 3A (1B) Au>ciliazy Transformer to 4.16KV hus 20101 20301

2) 3A1 (1A2) Circulating Water Pump 20103 20303

3) 1B1 (1B2) Circulating Water Puap 20104 20304

4) S/G Blawdown 480V MCC 1B9 20305

5) 1A (1B) TCW Pump 20106 20306

6) 1A (1B) Candensate Bmy 20107 20307

7) 3A (1B) Heater Dzcdn Pump 20108 20308

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Page 10 of 19 XUZ ST. IIJCIE UNIT 1 EMEXKENCY PBDCEIXRE NUMBER 1-0030143'EVISIGN 10 APEKND3X A D

(continued)

3. (cantir mad) 3.8 4.16KV Switchgear 1A3 (1B3)

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Open and rack aut the follawirg breaker:

1) 3A (1B) Diesel Generator 20211 20401 Open breakers an the follawing:

1) IA (1B) HPSI Pump 20201 20405

2) IA (1B) LPSI Puay 20202 20406 p yWW 20203 20407

4) IA3 (1B3) Pressurizer Heater Transforner 20204 20403

5) 3A (1B) CCN Pump 20206 20404

6) IA (IB) ICW Pump 20207 20410

7) 4.16KV Feed to IAB 4.16KV bus 20208 20409

8) M (1B) AFW Pump 20212 20412 3.9 Insert fuses and close breaker ¹ 20102 20302

[IA (1B) S.U. Transformer to 4.16KV bus].

4.16KV bus IA2 (1B2) is new energized.

3.10 Insert fuses and close breaker ¹ 20109 20309

[IA2/IA3 (1B2/1B3) tie brea)cer].

3.11 Insert fuses, turn on synch and close breaker ¹ 20209 20411

[IA2/IA3 (1B2/1B3) tie breaker].

4.16MT bus IA3 (1B3) is nor energized.

Do nat exceed 659 ass an 2A (2B) Diesel Generator. 1~ure bus voltage is 4160 + 420V and frequency is 60 + 1.2 Hertz.

4. Start 4.16KV equi~t as needed. Energize load centers and MCC's by first stripping the Zaad Center/HCC bus and then energizirxy the bus.

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3XQP ST. IDCXE UNIT 1 IMXGEKCY FBQCEIXRE NUMBER 1W030143 g REVISIOH 10 0 C APPENDZX B

1. ~nexgize Ioad Centers and MOC's by first stripping the Zaad Center/HCC bus and then opening the power supply.

2. De-energize equipnent and open breakers on all loads fran 1A3 (1B3) and 1A2 (1B2) 4.16KV buses.

3. Perform the indicated switching on the electrical tnt berg restored ELXBBZH KKMH ~KK 3.1 Open breaker 5 20209 20411

[3A2 (122) to 1A3 (1B3) 4.16KV tie].

3.2 Open breaker 0 20109 20309

[1A2 (H32) to 3A3 (1B3) 4.16KV tie].

4.16KV Bus 1A3 (XB3) is now de-energized.

3-.3 Open breaker g 20102 20302

[1A (12) S.U. Dansforner to 1A2 (1B2) 4.16'us].

4.16KV bus 1A2 (1B2) is now de-energized.

3.4 If pamr was being supplied diesel, continue with Step 3.5.

~ If 2A or 2B not, skip to Step 3.9.

(Steps 3.5 thrcaxIh 3.8)

'3.5 Open breaker 5 2-20102 2-20302

[2A (2B) S.U. Transfarzmr to 2A2 (2B2)

4. 16KV bus] .

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ST. IJJCZE UNIT 1 ZMERGEKCY HKCEZXJRE NUMBER lW030143, REVISION 10 0 C APPENDIX B (cxmtiLnued)

3. (continued) 3.6 4.16KV Switchgear 2A2 (2B2) ~gggf B TEQIN gggg Replace fuses on the follawimp:

1) 2A (2B) Auxiliary Transformer 1W86 1W84

2) 2A1 (2A2) Circulatinp Water Pump 2-20103 2-20303

3) 2B1 (2B2) Circulating Water Pump 2-20104 2-20304

4) S/G Blowdown 480V MCC 1B9 2-20105

5) 2A (2B) VCR Pump 2-20106 2-20306

6) 2A (2B) Condensate Bmp 2-20107 2-20307

7) 2A (2B) Heater Drain Pump 2-20108 2-20308

8) 4.16KV Feed to 2A1 (2B1) L.C. 2-20110 2-20310 3.7 4.16KV Switchgear 2A3 (2B3)

Replace fuses on the follmding:

1) 4-16KV Feed to 2AB 4.16KV bus 2-20208 2-20409

2) 4.16KV Feed to 2A2 (2B2) L.C. 2-20210 2-20402 3) 4)

6)

7) CEXM 2A3 (2B3)

~e 2A (2B) HPSX Putty 2A (2B) LPSX Pump Coolie vow L.C. (Pressurizer Heaters)

Fan 2HVE-21A (21B) 2-20201 2-20202 2-20203 2-20204 2-20205 2-20405 2-20406 2-20407 2-20403 2-20408

8) 2A (2B) CCW Puny 2-20206 2-20404

9) 2A (2B) ICR Puny 2-20207 2-20410

10) 2A (2B) AFH Bmp 2-20212 2-20412 EKE Qn Unit 2: 4416KV buses 2A2 (2B2) and 2A3 (2B3) are energized by the zurudng diesel and may be reloaded as required.

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Page 13 of 19

~p SZ. IIJCZE UNIT 1 ZHEKEKCY PBQCEK1RE NUMBER 1W030143 g ~IGH 10 OF AC APPENDIX B (continued)

3. (continued) 3.8 4.16KV Switchgear 2A4 (2B4) ~hXH B 'RhXH &KK

1) Open and rack aut breaker ¹ 2-20603 2-20703

[1A (2A) S.U. Transformer crcm-tie].

2) Reaxve breaker fram cubicle ¹3 and install in cubicle ¹5 (or ¹1, if ~sty) .

3) Rack in and close brealcer ¹ 1W90 1W82

[1A (1B) S.U. Transformer Incaning 2-20705 '-20601 Feeder]. /R10

4) Rack in and close breaker ¹ 1W88 1W80

[2A (2B) S.U. Transforaer Inccadzg 2-20605 2-20701 Feeder]. /R10 gag 4.16KV switchgear 2A4 (2B4) is now aligned far off site pawer, if available.

3.9 Strip all vital and nan-vital load center breakers in preparation for a systeaatic power restoratian.

3.10 Energize the 4.16KV buses by either of the following aetlxds:

1. Energizatian with Diesel:

a. Rack in breaker ¹ 20211 20401

[3A (1B) Diesel to XA3 (1B3) 4.16KV bus]. Diesel will start and energize lA3 (1B3)

4. 16KV bus.

b. ~ust and maintain 4160 + 420V and 60 + 1.2 Hertz.

c. Close breaker ¹ 20109 20309

[3A3 (1B3) to 3A2 (1B2) tie].

d. Insert synch plug, bold breaker 20109 (20309) closed, and close breaker ¹ 20209 20411

[1A3 (1B3) to 3A2 (1B2) tie].

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page 14 of 19 QJCZE UNIT 1 EMERGENCY EBDCEIXHE NUMBER lW030143i REVISION 10 (continued)

3. (continued)

3. 10 (continued)

1. (continued)

e. Release breaker 20109 (20309)-

and reaave syncb plug.

2. Bnangization with Startuy Tranaforaer: A 'INA2N B 'INAIN CHEgg

a. Close brea)cer ¹ 20102 20302

[3A (IB) S.U. Transformer to 3A2 (IB2) 4.16KV bus].

b. Close breaker ¹ 20109 20309

[3A3 (IB3) to IA2 (1B2) tie] ~

c. Insert synch plug and close breaker ¹ 20209 20411

[3A3 (IB3) to 3A2 (IB2) tie].

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'Ibe following may be energized as

+~ed, not necessarily in the 0

3.11 To energize 3A2 (1B2) 480V Zaad Centers:

1. Close breaker ¹ 20210 20402

[4.16KV feed to 3A2 (1B2) L.C.].

2. Close breaker ¹ 40203 40503

[3A2 (IB2) Station Service TransforIMr to IA2 (1B2) 480V L.C.].

3. 12 To energize 3AB 480V Zoad Center:

1. Close breaker ¹ 40204 and brea)cer ¹ 40702 (IA2 480V L.C. feed to 3AB L.C.).

Close breaker ¹ 40504 and brealcer ¹ 40706 (1B2 480V L.C. feed to 3AB L.C.) .

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ST. IIJCZE UNIT 1 E'HERGEKCY PBOCECGEK NUMBER 1W030143, REVISION 10 0

APEKNDZK B 1 HEPKSATXON (continued)

3. (contirami) 3.Q To energize 3A5 (1B5) NX: ~+AQf EL'g%~ CSE~

1. Close breaker I 40214 40514

[IA2 (1B2) L.C. feed to 3A5 (1B5) MCC] .

2. Close breaker I 41230 42027

[IA5 (1B5) MOC load breaker] .

3.14 To enevpize IA6 (1B6) MCC:

1. Close breaker 4 40218 40518

[IA2 (1B2) L.C. feed to IA6 (1B6) MCC].

2. Close bxealcer I 41325 42135

[3A6 (1B6) hKC load breaker].

3.15 To enexgize 3A7 (1B7) HCC:

1. Close breaker 4 40219 40519

[IA2 (1B2) 480V L.C. feed to 3A7 (XB7) MO ] ~

3.16 To enevpize IA8 (1BS) MCC:

1. Close breaker 4 40215 40515

[IA2 (1B2) 480V L.C. feed to IA8 (1B8) MCC].

2. Close breaker 4 41513 42317

[IA8 (1B8) MCC load breaker] .

3. 18 Ensure 3A (3B) battery charger is "CN IZNE" supplying the IA (1B) DC bus by verifying IA (1B) DC bus voltage on EGGB-101 to be >120V DC.

3. 19 Align and initiate amxgency cooley water to the Znstxunent Air'cagn~oxs. When power has been restored to 3A6 (IB6) MCC, the Air ~messor(s) may be staxtmi.

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Page 16 of 19, ST. IIX'NIT1 HKPGENCY HKCEIXRE NUMBER 1W030 143 I REVZSIQH 10 Q A KNER APPENDIX B (continued) 3.20 Start 3A (1B) Cmxging Pump to restore Pressurizer

, level. When the CCW System is returned to aperatian, a HPSI puap may be operated to ampnent xefilling of the Pxessurizer.

3. 21 Observe all available indicatians to chdmxune conditions within the hCS and ensure subcooling.

1. Use the QSPDS Subcool Margin Monitor (SMN) display to ensure that the RCS, +per Head, and Cps indicate

>20 degrees and <200'F subcooled.

2. Subcool Margin Curve (Figure 1) should be used with RCS T-bat RKs and Pressurizer pressure as a cxmparisan with the QSPD6 B%f display.

3.22 If RCS 3a not >20'F subcooled'.

With the Pressurizer available, use heaters to establish 20'F subcooled canditians, when heater power is xestoxed

2. If the pxessurizer is not available, establish the recydxed subcooling by rechcing RCS taapexatuxe, or by pressurizing with changinp ar HPSI flaw.

3.23 If the RCS is or becmes >200'F subcooled:

1. With the Pressurizer available, reduce pressuxe by renxving heatexs fran sexvice and utilize Pxessurizer spray.

2. With E?eessurizer not available, cansider thxo~ing the HPSI puces discharge or reduce RCS pressure.

~ing charging pm~ to

~Q~ B 'gg~ Cggg 3.24 Close breaker 4 20204 20403 (4.16'eed to Pressurizer Heaters) .

3.25 When Pressurizer-level indicates >30t, energize Pressurizer heaters B-1, B-2, B-3, P-1 (~, ~, ~, P-2).

3.26 Ensure ICW seal water fran Unit 1 DcaIestic Water System is available.

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Page 17 of 19 TIOP ST. IIJCZE UNIT 1 HKRGEKCY PROCECURE NUMHER 1W030143, REVISION 10 I

Q APPENDIX B (continued)

3. (contiramd) 3.27 ~mtablish 3A (1B) ICN thun as foU.aws: (~(

1. Establish seal water.

2. 'Ihrottle 3A (1B) ICÃ Pump dischavge valve.

3. Start 3A (1B) ICS Pump; then pressurize and vent 3A (1B) ICN heeler.

4. After venting, open 3A (13) ICH Pump disN~ge valve.

3.28 Re-establish 3A (1B) OCÃ tx~ as follaws:

1. Isolate CCÃ to RCP's by closing HCV-14-1, 2 6 and 7 (to prevent thexmal shocking RCP seals) .

2. 'Ihrottle 3A (1B) CCR Bmp discharge valve.

3. Wsure CCN Surge Tank at normal level.

4. Start 3A (1B) CCW Pump; then pressurize and slowly open 3A (IB) CCÃ yuan discharge valve.

3.29 ~stablish CUTS letdown to maintain Pressurizer level at normal aperating level.

3.30 Ccaxnence horatian to Gold Shutdown boron cuncentxatian.

3.31 Start one set of Cavity and Support Goolirg Fans.

3.32 Proceed to OP 1W320039, 'N'atural Circulati~Oooldown, and perform in corrjun~an with the balance of this procedure.

3.33 Reatca~ balarxm of secandary plant in accordance with EP 1W030140, "Blackout tian."

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XLQP ST. IIJCZE UNXT 1 1~XGENCY PBOCEEXEK NUMBER 1W030143, REVISION 10 2500 I

I I

2250 ACCEPTABLE P I R NOT ACCEPTABLE I E I 5 n50 5 lOVfSUSCOOLCD U

R t500 Z I E I R I P

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R T50 SATURATlON T MR (pc@)

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Page 19 of 19

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ST. QJCIE UNIT ZMERGEÃCY PROCEDURE NUMBER 1W030143, REVXSICN 10 0

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'Ihe 'Mtal lass of AC Pawed'vent cansists of a loss of afrite power in conjunction with failuxe of the agency Diesel Generators to pmvide eaazgency power. 'Ihis results in a loss of all AC electrical pa~ except that pmvided by inverters powered harem the vital DC bu.~. 'Ihe texmunation of AC pater causes a loss of forced zeactor coolant flaw, main feedwater flow, stem flaw to the Tuxbine and Pressurizer pressure control. 'Ihe reactor trips an either law xeactar coolant flaw, high Reactor Coolant System pressure or law Steam Generator level depencUaxy on initial carxlitions.

'Ihe "Tatal Zass of AC Power" event also causes a loss of all RCS makeup capability which includes chaxgmy and safety hrjectian flaw. Inventory losses thmugh leakage, Reactor Coolant Pump cantmlled bleedoff, and Y 1 1 1 1 decpmlatian of pressure and level cantml during the event. 'Ihe ather contributor to coolant system shrinkage and pressure reduction is sy.~i heat loss, primarily kahn~ the Pressurizer walls.

Core heat remval is acccmplished thmugh natural circulation. RCS heat rival is a~lishod using Atmo.+M.ric Dump Valves and the steam-driven AFH Bmp.

Instxuctians are pmvided for ~kg either 2A ar 2B diesel into the Unit 1 grid to pmvide taqxxeaxy power. A study made by CE indicates that the unit can xun fran batteries alane for up to fear beaus. If it ~vers ttwt pcs'estoration will be greater than faur hours, preparations should be made to use one of the Unit 2 diesels.

7.0 KZZKMZ

7. 1 CE Baexgency Pmcedure Guidelines, CEN-I52, REV-D2.

7.2 St. Zucie Unit 1 Off~ral Operating Pmceduxes.

8.0 8.1 Nozmal log entries.

9.0 Reviewed by Facility Review Graup 1982 Appmved by Plant Manager 4 1982 Revtsian~Reviewed by FRG Appmved by Plant Manager =') 3 ~Qd

EP 1~30143 REVISION 10 1U3M NO. OF URGES ~

Attachment II LICENSING BASIS CRITERIA TO RESOLVE STATION BLACKOUT FOR FLORIDA POWER & LIGHT ST. LUCIE NUCLEAR UNITS RGSBO

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Attachment II Page two 1.0 PURPOSE The information provided by this document provides the licensing criteria that will be used by Florida Power 6 Light Company (FPL) to meet the requirements of the Station Blackout (SBO) rule. It is intended to form the basis for agreement between FPL and the NRC for satisfying the rule. When implemented it will meet requirements of 10 CFR 50.63 "Loss of All Alternating Current Power".

2.0 INTRODUCTION

Resolution of Unresolved Safety Issue (USI) A-44, STATION BLACKOUT, was concluded by the NRC on June 21, 1988 by amending its regulations (i.e., 10 CFR 50) to require that light water cooled nuclear power plants be capable of withstanding a total loss of alternating current (AC) electric power (i.e. station blackout).

DISCUSSION Resolution of the Station Blackout issue for FPL nuclear units has required consideration of the criteria embodied in the NRC final rule, Regulatory Guide 1.155 "STATION BLACKOUT" and NUMARC document 87-00 "Guidelines and Technical Bases for NIBRRC Initiatives Addressing Station Blackout at Light Water Reactors".

FPL is required by law to comply with the "rule" as presented in 10CFR50.63. FPL has obtained guidance from the regulatory guide to implement the rule. FPL has also voluntarily agreed, through executive commitment, to implement five (5) initiatives from NUMARC 87-00 Section 1.2. All these documents were used to develop FPL's Licensing Basis Criteria document for the St. Lucie units.

4.0 SCOPE AND LIMITATIONS The rule and supporting guidance documents allow flexibility in addressing station blackout. This document provides the licensing criteria that are the bases for FPL to resolve this issue.

Specifically, It is not intended to .address all options.

resolution of station blackout for St. Lucie nuclear units shall be resolved by use of an alternate safety related, class 1E, seismic category 1, poWer source and unit intertie with the ability to align the source in 10 minutes.

5.0 REQUIREMENTS OF THE RULE 5.1 One (1) Emergency Diesel Generator (EDG) shall be made available in 10 minutes after the onset of a station blackout (10CFR50.63(c)(2)):

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Attachment Page three II a) The 10 minute clock shall start after: operators perform the immediate steps in the Emergency Operating Procedures (EOP's) verify scram, other primary system parameters, attempt to restore offsite power and attempt to start the EDG's from the control room per the EOP's.

b) The EDG shall be made available to the nonpowered buses, by demonstration, in 10 minutes, after performing items in section 5.1 (a).

c) The EDG shall be capable of supporting all necessary loads to place units 1 and 2 in hot standby (i.e.,

safe shutdown) for 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />.

d) All EDG loads for station blackout shall be identified in a load study for purposes of identification in the "TOTAL LOSS OF AC POWER EOP".

e) To provide reasonable assurance of success by analysis, the failed state frequency for the shared SBO electrical configuration shall not exceed 1 x 10 /year.

Independence between existing sa fety-related systems shall be provided by a minimum of two (2) class 1E circuit breaker administratively controlled from the control room.

g) All design criteria used to address SBO modifications shall conform with criteria applicable to the unit's current licensed design bases. To the extent that the licensed design basis commits to regulatory guides, industry design codes and standards, they shall be used.

h) The SBO modifications shall not change the licensed configuration of units 1 and 2.

5.2 Loss of Coolant Accident Design Bases Accident (LOCA-DBA) shall not be considered: (10 CFR 50.2) a) The SBO event is assumed to occur without postulating any other concurrent Design Bases Accident (DBA).

b) The SBO event is assumed to occur after a loss of Offsite Power (LOOP) and failure to start two of two EDG's on the affected unit.

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Attachment four II Page c) No other single failures are assumed or postulated during the SBO event for both units. Seismic, flooding and fire induced SBO events shall not be considered concurrent with this design.

d) Non-LOCA loads shall be used as a SBO design bases for EDG loading. Loads identified to be placed on the EDG shall provide assurance that the units can survive the SBO event for four (4) hours. These loads, as a minimum, shall support the following functions:

1) water for decay heat removal

2) HVAC in critical or "dominant area of concern" to assure equipment operability

3) cooling for RCP seals to preclude seal failures

4) fuel oil for EDG operability

5) power for valves required for containment integrity 5.3 Recovery Procedure(s) a) The procedure(s) shall be revised following implementation of the 10-minute crosstie design to address actions to be taken to mitigate and recover from the SBO event. The procedure shall include containment isolation, AC recovery and use of (1)

EDG to mitigate SBO for the required duration.

b) The procedure(s) shall include and address actions taken in the 24-hour period prior to anticipated hurricane force winds.

6.0 COMMITMENT TO NUMARC 87-00 Criteria provided in this document meets all five (5) industry initiatives committed to the NRC by NUMARC 87-00 Section 1.2.

In addition, criteria provided in this document conforms to NUMARC 87-00 "Guidelines and Technical Bases for NUMARC Initiatives Addressing Station Blackout at Light Water Reactors".

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Attachment Page five II 7.0 REQUIRED SUBMITTALS 7.1 Information submittal, April 17, 1989

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a) By use of tables 1 through 8 in Reg Guide 1.155 FPL shall propose a station blackout duration time. The duration time may be modified, with justification, to take credit for the opposite units 2 EDG's via the 10-minute crosstie (to reduce coping time to 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br />) .

b) Description of procedures that will be implemented for SBO events for the duration determined in (a).

c) Description of modifications to the facility to meet requirements of the SBO event and a proposed schedule for implementation.

7.2 Implementation Schedule A final implementation schedule shall be submitted in accordance with 10 CFR 50.63(c)(4).

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