ML17347B295

Procedure 3-EOP-ECA-0.1, Turkey Point Nuclear Plant Unit 3 Loss of All AC Power

ML17347B295
Person / Time
Site:	Turkey Point
Issue date:	03/21/1989
From:	FLORIDA POWER & LIGHT CO.
To:
Shared Package
ML17347B296	List: ML17347B295 ML17347B652
References
3-EOP-ECA-.0, 3-EOP-ECA-0.0, NUDOCS 9004090191
Download: ML17347B295 (41)

Text

This procedure may be aHecred by an 0 T.S.C (On The 5pot Change) verifyinformation priorIuse.

Oate venfied initials Florida Power &Light Company Turkey Point Nuclear Plant Unit 3 3-EOP-EGA-0.0'itle:

LOSS OF ALLAC POWER Safe Related Procedure Responsible Department:

Reviewed by PNSC:

Approved by Plant Manager-N:

Operations89-121 3/21/89 RTSs 87.0742, 88-0450P, 88-0599P, 88-2137P, 88-2761P, 88-2789 RTS 89-0821P PCIM 88-461

• /HEB/eddj/bc 5'004090iyg e003~j PDR ADOCK 05000250 P

PDC

~.oceaare uo 3-EOP-EGA.0.0 P oceaare t.'e:

LOSS OF ALLAC POKER

)age; Aaoc)v)l ojl~g LIST OF EFFECTIVE PAGES

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9 10ll 12 13 14 15 16 17 18 19 20 21 Revision Date 03/21/89 03/21/89 01/07/87 10/15/88 03/21/89 03/21/89 01/07/87 03/29/88 12/06/88 01/07/87 01/07/87 01/07/87 01/07/87 01/07/87C 01/07/87 01/07/87 01/07/87 01/07/87 01/07/87 04/16/87 01/07/87 e/H BB/ec/dj/bc

.~ ocecpre No 3-EOP.ECA-0.0

> peep<<re

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LOSS OF ALLAC POWER

'age 4pprovai Date 1/7/87 1.0 PURPOSE This procedure provides actions to respond to a loss ofall ac power.

2.0 SYMPTOMS OR ENTRY CONDITIONS 2.1 The symptom of a loss of all ac power is the indication that all 4KV buses are deenergized.

2.2 This procedure is entered from E-O, REACTOR TRIP OR SAFETY INJECTION, Step 3, on the indication that all 4KVbuses are deenergized.

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LOSS OF ALLAC POWER et

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3/2t. 99 STEP ACT1ON/EXPECTED RESPONSE R ESP ON 5 E NOT OBTAIN E D Try to Restore Power to the 4KV Buses a.

Start diesel generator b.

Energize the 4KV buses by manually closing the A(B) 0/G output breaker c.

Verify 4KV Buses

- AT LEAST ONE ENERGIZED d.

Go to Step 23 a.

Emergency start diesel generators oy performing steps of Attachment A.

b.

Go to Attachment 8, energizing the 3A 4KV Bus Utilizing the Unit 4 Startup Transformer.

c.

Go to Step 8 7

8 Continue to Next Step Dispatch Personnel To Locally Close The Following Isolation Valves:

a.

3-297A RCP-A Seal Injection Manual Isolation Valve b.

3-297B RCP-8 Seal Injection Manual Isolation Valve c.

3-297C RCP-C Seal Injection Manual Isolation Valve d.

MOV-3-381 RCP seal return isolation valve e.

MOV-3-626 RCP thermal barrier CCW return isolation valve 9

i Continue To Next S~te q O Check S/G Status:

a.

Main steamline isolation and bypass valves -CLOSED b.

Main FW control and bypass valves-CLOSED c.

S/G Blowdown isolation valves-CLOSED Manually close valves.

IF valves can NOT be manually closed, THEN locally close valves.

~tH=9.ec d; bc

3-EOP. ECA-0.0 LOSS OF ALLAC POWER I/7/87 STEP ACTION/EXPECTEO RESPONSE RESPONSE NOT OBTAINEO CA UTION A faulted or ruptured S/G that is isolated should remain isolated.

Steam supply to the AFWpump must be maintained from at least one S/G.

Check If5/Gs Are Not Faulted:

a.

Check pressures in all 5/Gs-

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NO 5/G PRESSURE DECREASING IN AN UNCONTROLLED MANNER a.

Isolate faulted 5/G(s):

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Isolate AFW flow.

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Reset Sl IF necessary

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NO 5/G COMPLETELY DEPRESSURIZED

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Place 5/G feedwater pump cntrl sw to off.

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Close steam supply valve from faulted 5/G to AFW pump.

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Verify5/G steam dump to atmosphere.

closed. IF NOT, THEN manually close.

Check If 5/G Tubes Are Not Ruptured:

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Condenser air ejector radiation-NORMAL

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5/G blowdown radiation - NORMAL Try to identify,ruptured 5/G(s).

Continue with Step I 3.

WHEN ruptured 5/G(s) identified, THEN isolate ruptured 5/G(s):

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Reset Sl is necessary

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Place 5/G feedwater pump cntrl sw to OFF

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Isolate AFW flow, to the affectea SiG.

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Close steam supply valve from ruotured 5/G to AFW pump.

WHEN 5/G pressure less than l060 PSIG, THEN verify 5/G steam dump to atmosphere closed IF

NOT, THEN manually close.

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3-EOP.EGA.0.0 LOSS OF ALLAC POWER 3/29/88 STEP ACT1ON/EXPECTED RESPONSE RESPONSE NOT OBTAINED CA UTION Qln the event that 5/G Cis ruptured valve 3-006 and 3-007 willrequire repositioning to provide steam supply to the A AFWgum~

Check Intact 5/6 Levels:

a.

Narrow range level

- GREATER THAN 6oo (32%I b.

Control AFW flow to maintain narrow range level between 6'~o (32oro} and 50%

a.

Maintain maximum AFW flow until narrow range level greater than 6'/o (32% )

b.

IF narrow range level in any 5/6 continues to increase in an uncontrolled manner, THEN isolate ruptured 5/6:

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Reset Sl i f necessary

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Place 5/G feedwater pump cntrl sw to OFF

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Isolate AFW flow.

$ 4 Check OC Bus Loads:

a.

Shed all large non-essential DC loads:

I) Perform steps of Attachment D

while continuing with procedure b.

Dispatch personnel to locally monitor DC power supply.

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Close steam supply valve from ruptured 5/6 to AFW pump.

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WHEN 5/6 pressure less than I035 PSIG, THEN verify 5/6 steam dump '.c atmosphere valves closed.

IF NOT, THEN manually close.

Check CST Level - GREATER THAN 10%

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3-EOP.ECA-0.0 LOSS OF ALLAC POWER 9

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12/6/88 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED CA U TI ON ISIG pressures should not be decreased to less than 90 PSIG to prevent injection ofaccumulator nitrogen into the RCS.

NOTE

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The 5IGs should be depressurized at maximum rate to minimize RCS inventory loss.

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PRZ level may be lost and reactor vessel upper head voiding may occur due to depressurization of 5IGs. Oepressurization should not be stopped to prevent these occurrences.

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Oepressurize Intact 5/Gs To 190 PSIG:

a.

Check 5/G narrow range levels-GREATER THAN 6% (32%I in at least one 5/G b.

Manually dump steam at maximum

.rate using 5/G steam dump to atmosphere valves a.

Perform the following:

1)

Maintain maximum AFW flow until narrow range level greater than 6%

(32% J in at least one 5/G.

2)

Continue with step 17.

WHEN narrow range level greater than 6%

(32%] in at least one 5/G, THEN do Steps 16b, c,d and e.

c.

Check RCS cold leg temperatures c.

Perform the following:

GREATER THAN346'F [347'Fj 1)

Control 5/G steam dump to atmosphere valves to stop 5/G 1epressurization.

2)

Continue with Step 17.

d.

Check 5/G pressures

-I.ESS THAN 190 PSlG e.

Manually control 5/G steam dump to atmosphere to maintain 5/G pressures at 190 ~PSIG d.

Continue with Step 17.

WHEN 5/G pressures decreased to less than 190 PSIG, THEN do Step 16e

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N0 3-EOP. ECA-O.O

>'.CMa(f LOSS OF ALLAC POWER

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'0080vil 34lt 1/7/87 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED

't 7 Check Reactor Subcritical:

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INTERMEDIATE RANGE CHANNELS ZERO OR NEGATIVE STARTUP RATE

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SOURCE RANGE CHANNELS - ZERO OR NEGATIVESTARTUP RATE Control 5/G Steam Dump to Atmosphere valves to stop S/G depressurization and allow RCS to heat up.

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Depressurization ofS/Gs willresultin Sl actuation.

permit manual loading ofegui pment on 4KVbus.

I Sl should be reset to I

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a.

SI - HAS BEEN ACTUATED b.

Reset Sl ifnecessary

$ 9 VerifyContainment Isolation Phase A:

a.

Phase A-ACTUATED b.

Phase A valves-CLOSED a.

Go to Step 22.

WHEN Sl actuated, THEN do Steps IBb, I9, 20 and 21.

a.

Manually actuate Phase A.

b.

Manually close valves.

IF valves can NOT be manually closed, THEN locally close valves.

> <<tourt vo 3-EOP-EGA 0.0 LOSS OF ALLAC POWER CCY Vhi htt 1/7/87 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 2O VerifyContainment Ventilation Isolation:

a.

Containment purge and supply fans OFF b

Purge valves - CLOSED c.

Instrument air bleed valves - CLOSED a.

Place control switch in OFF position b.

Manually close purge valves.

IF purge valves can NOT be manually closed, THEN locally close purge valves.

c.

Manually close valves.

21 Check Containment Pressure HAS REMAINED LESS THAN 20 PSI6 Perform the following:

a.

Verify containment spray

~.gnal actuated.

IF NOT THEN manually actuate.

b.

Verify containment isolation Phase B

valves closed.

IF NOT THEN manually close valves.

IF valves can not be manually

closed, THEN locally close valves.

c.

Reset containment spray signal.

Check Containment Radiation -LESS THAN CONTAINMENT Ventilation Isolation Setpoint.

Manually close containment isolation valves as necessary, IF valves can NOT be manually closed, THEN locally close valves.

(!c4(t 4c 3-EOP-EGA-0.0 C clif LOSS OF ALLAC POWER

>!se

$ 9

-ccrc.>>. >!e 1/7/87 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 23 Check If4KV Bus Power ls Restored:

a.

Check 4KV buses

- AT LEAST ONE ENERGIZED a.

Continue to control RCS conditions and monitor plant status:

1)

Check status of local actions:

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4 KV Bus power restoration

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RCP seal isolation

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DC power supply 2)

Check status of auxiliary boration systems:

IF

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BAST temperature is less than f55'F THEN consult TSC staff for possible boric aad concentration reduction or drainage of the BASTs 3)

Check status of spent fuel cooling:

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Spent fuel pit low level alarm cleared (HI/I)IF low level alarm is ON THEN dispatch personnel to initiate makeup to the spent fuel pit: Per ONOP-033.1, SPENT FUEL PIT EMERGENCY COOLING 4)

Return to Step 15.

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0.C~vrt 40 3-E OP-EGA-0.0 LOSS OF ALLAC POWER COr vlr l(t 1/7/87 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED 24 Stabilize S/G Pressures:

a.

Manually control S/G steam dump to atmosphere Valves.

CA UTION Loading on the EDG should not exceed the Orange mark (2000 hour0.0231 days <br />0.556 hours <br />0.00331 weeks <br />7.61e-4 months <br /> rating of 2850 KW).

However, loads placed on the energized 4 KI/

buses (the power source) may approach the Red mark (16S hour rating) on the wattmeter forshort periods.

25 Verify Following Equipment Loaded On Manually load equipment as necessary.

4KV Bus 26 a.

480 Volt Load Centers - ENERGIZED b.

IF A and B 4KV buses ENERGIZED THEN verify proper battery charger and inverter operation.

Continue to Next Step a.

Manually close load control cente~

breakers as necessary.

27 Select Recovery Guideline:

a.

Check RCS subcooling based on core exit TCs -GREATER THAN 30'F [45%]

b.

Check PRZ level - GREATER THAN 12%

IS0%]

c.

Check ifSl HAS BEEN ACTUATED d.

IF Sl actuated, THEN go to ECA-0.2, LOSS OF ALL AC POWER RECOVERY WITH Sl REQUIRED, Step 1.

a.

Go to ECA-0.2, LOSS OF ALL AC POWER RECOVERY WITH SI REQUIRED, Step 1.

b.

Go to ECA-0.2, LOSS OF ALL AC POWER RECOVERY WITH SI REQUIRED, Step 1.

c.

Go to ECA-0.1,'OSS OF ALL AC PO'vVER RECOVERY WITHOUT SI REQUIRED, Step l.

END OF TEXT

giOCggg(t 'lO.

3 EOP ECA-0.0

>racegu<g diag, LOSS OF AI.LAC POWER

>CEYOvgi Clog I;7!87C STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED ATTACHMKNI' MANUAI.START OF DIF.SF.I. GENERATOR Verify All Breakers On The Affected 4KV 3A(3B) Buses Are In The OPEN Position Manually trip breakers Place the LOCAL/NORMALselector switch

, to OFF.

Verify That The Following Conditions Exist At The local Diesel Generator A (B) Alarm Panel a.

Low fuel light is OFF b.

Low air light OFF c,

~PowerlightisO~N d.

Verifyoverspeed trip light OFF e.

Verifyhot engine light - OFF f.

Verifycrank case pressure light OFF g.

Verifylow water light OFF h.

Verifyoil pressure light OFF i..

Verifyoil TEMP light OFF j.

Verifystart failure light OFF 3.

Take required action, a.

Gravity feed fuel using locai pushbutton.

b.

Valve in isolated air tank.

c.

Refer to DG breaker alignment as per O-OP-023,EMERGENCY DIESEL GENERATOR d.

Reset overspeed trip relay.

e.

Position key switch to BYPASS f.

Position key switch to BYPASS g.

Position key switch to BYPASS h.

Position key switch to BYPASS i.

Position key switch to BYPASS j.

Push the ALARM RESET and STOP pushbutton.

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3-EOP. ECA.O.O LOSS OF ALLAC POWER 1/7/87 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED ATTACHMENTA (Cont'd)

MANUALSTART OF DIESEL GENERATORS Cont'd.

k.

Verifythe following 0/G relay status:

I) 0/G lockout relay - No Trip Target 2)

Voltage Relay Flag - No Flag 3)

Reverse Power flag - No Flag 4)

Overcurrent Phase A - No Flag 5)

Overcurrent Phase 8-No Flag 6)

Overcurrent Phase C - No Flag 7)

Differentia Phase A-- No Flag 8)

Differential Phase 8 - No Flag 9)

Differential Phase C - No Flag Verify The Diesel Generator Lockout Relay Is Reset Verify The Diesel Generator Trouble Key Switch Is In The BYPASS Position.

IF 0/G lockout relay target 'is present and any of the 8 relays flags are present THEN go to the other Diesel A(8) and Step 2

of Attachment A IF relay flags exist on both diesel generators, Go to Attachment 8,

ENERGIZING 3A 4KV BUS USING THE UNIT 4 STARTUP TRANSFORMER.

4.

Push the Alarm Reset and Stop pushbutton and Reset the 0/G lockout relay.

S.

Place the Key Switch in the BYPASS position.

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>'tdu(t 4C 3-EO P. EGA-0.0 LOSS OF AI.LAC POWER

'oocCves l(C 1/7/87 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED ATTACHMENTA (Cont'd) iVIANUALSTART OF DIESEL GENERATORS CA UTION Depressing the "Alarm Reset and Stop" Pushbutton while diesel is in operation willstop the diesel.

Push The "Alarm Reset And Stop" Pushbutton On The Diesel Panel

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I IF the emergency start signal still exists, the EDG should start on actions ofStep 7.

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Place the LOCAUNORMALselector switch to normal and verify diesel starts.

Verify With Control Room That Remote Diesel Operation Is Satisfactory 7.

Notify Control Room that EDG is ready for remote start attempt and operation.

8 Go to Step 10.

Go To Step 6b Of ECA-O.O, LOSS OF ALLAC POWER 10.

IF. Instructed To Operate Diesel Locally THEN Go To Step 11 Place The LOCAUNORMALSwitch To Local 12.

Push The 0/G Start Button'And Verify The DG Starts 12 Go to other 0/G (A) (8) and perform steps of Attachment A

steps I

through 12, IF other 0/G (A) (8) will not start THEN go to Attachment 8.

13.

Verify Diesel Generator Reaches 900 RPM 13 Adjust Diesel RPM to 900.

14.

Verify Diesel Generator Frequency Is At 60 14 Adjust Diesel frequency to 60 HZ.

HZ

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3. EO P. EGA-0.0 LOSS OF ALLAC POWER

'co<< Jv<<<

<<(t 1/7/87 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED ATTACHMENT B ENERGIZINGTHE 3A 4KV BUS UTILIZINGTHE UNIT4 SU TRANSFORMER VerifyThat All Breakers On The 3A 4KV Bus Are In The OPEN Position 1.

Manually open all breakers Verify Potential On The Unit 4 Start Up Transformer (white light above frequency recorder) 2.

Go to Attachment C, Energizing the 3A 4KV bus utilizing the unit I

and 2

cranking diesels.

Verify That 3A 4KV Bus Lockout Has Not Occurred Unlock feeder Breaker 3AA22, Unit 4 Start Up Transformer To The 3A 4KV Bus 3.

Reset lockout relay.

4.

Go to Attachment C Rack In Breaker 3AA22, Unit.4.Start Up Transformer To The 3A 4KV Bus Close Breaker 3AA22, Unit 4 Start Up Transformer To The 3A 4KV Bus Verify4160V On 3A 4KV Bus 5.

Go to Attachment C 6.

Go to Attachment C 7.

Go to Attachment C Go To ECA-0.0, LOSS OF ALL AC POWER Step 23

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3-EO P. EGA-0.0 LOSS OF ALLAC POWER 00<094<

4(t I/7/87 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED ATTACHMENTC ENERGIZING THE 4KV BUS UTILIZINGTHE UNIT 1 AND 2 CRANKINGDIESELS Unlock And Rack In The Following Breakers a

IW134-Cranking diesel tie to 4KV bus b

3AC03-C bus tie to cranking diesels c

4AC03-Unit 4 C bus tie to cranking diesels d

3AC13-3C bus supply breaker to 3A and 38 4KV bus Verify All Breakers On The 3C 4KV Bus In The OPEN Position

. Request. Unit 1 And' Watch Engineer To Start Any Two Cranking Diesels 2.

Manually open breakers.

CLOSE Breaker IW134, Cranking Diesel Tie To 4KV C Bus 4.

Manually close breaker.

CLOSE Breaker

3AC03, C

Bus Tie To Cranking Diesels Verify4160V On Bus 3C 5.

Go to ECA-0.0, LOSS OF ALL AC POWER, Step 8.

6.

Go to ECA-0.0, LOSS OF ALL AC POWER, Step 8.

7.

Verify All Breakers On The 3A 4KV Bus In 7.

Manually open all breakers.

The OPEN Position Verify That 3A 4KV Bus Lockout Has Not 8.

Reset lockout relay.

Occurred

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3-EQP-ECA.O 0 LOSS OF ALLAC POWER 7 ~,o 20 4/16/87 STEP ACTION/EXPECTED RESPONSE R E SPON S E NOT OBTAINED ATTACHMENTC (Cont'd)

ENERGIZINGTHE 4160V 4KV BUS UTILIZINGTHE UNIT 1 AND2 CRANKINGDIESELS CAUTION The load on the tie line from the Cranking Diesis is limited to 5000 KVK Maintaining equal to or less than 630 AMPS total on the Cranking Diesel Ammeter is required.

CLOSE Bus Tie Breaker 3AC13,,3C Bus Supply Breaker To 3A And 38 4KV Bus 9.

Manually close breaker.

10.

Rack In And Close Bus Tie Breaker 3AA09, 3C Bus Supply Breaker To 3A 4KV Bus 10.

Manually close breaker.

Verify4160V On 3A 4KV Bus 11.

IF 4160V cannot be verified on the 3A 4KV bus, energize the 38 4KV bus by closing Breaker 3A822.

IF 38 4KV bus cannot be energized THEN go to ECA-0.0, LOSS OF ALLAC POWER Step 8.

12.

Go to ECA-0.0, LOSS OF ALL AC POWER, Step 23 a/HEB/eak b 5,

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'ooeovw Cthe 3-EOP-ECA-O.O LOSS OF ALLAC POWER 1/7/87 STEP ACTION/EXPECTED RESPONSE RESPONSE NOT OBTAINED ATTACHMENTD 125V DC BUS SHEDDING I

Dispatch Operator to 125V DC Bus 3A (3DOI) and place the following Breakers in the OFF position, a.

3001-2 GEM 3 Excitation SWGR b.

3001-10 Gas Stripper Panel 3C30 3001-11 Main Transformer 3(3X01) d.

3D01-12 Radwaste Building DISTR Panel DP.65 e.

3001-13 Unit AUXTransformer (3X02) f.

3001-17 Water TreatmentPanel C22 g.

3D01-30 CRDMGset3AFlashingand Breaker Control h.

3001-34 CRD MG set 3A Flashing and Breaker Control i.

3D01-38 Rx Trip SWGR Rx Trip BKR A and Bypass BKR B (3C35) j.

3001-40 Rx Protection Relay Racks 3QR32, 3QR33, 3QR34, 3QR35 and 3QR36.

k.

3001-49 Supply to Rod Position Inverter 3Y03 2

When visual Inspection reveals that the turbine is not rotating place the Emergency Bearing Oil Pump control switch in the PULL-TO-LOCKposition.

3 Dispatch operator to 125V DC Bus 3D31 and place the followingbreakers in the OFF position.

a.

3031-26 AirSide Seal Oil Backup Pump b.

3D31-27 Emergency Bearing Oil Pump 4

Dispatch operator to begin a CO~ purge of the main generator.

FINAL PAGE

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