ML20204J781

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Rev 3 to Emergency Operating Procedure ECA-0.0, Station Blackout
ML20204J781
Person / Time
Site: Millstone, Haddam Neck, 05000000
Issue date: 06/03/1988
From:
CONNECTICUT YANKEE ATOMIC POWER CO.
To:
Shared Package
ML20204H467 List: ... further results
References
ECA-.0, ECA-0.0, NUDOCS 8810250250
Download: ML20204J781 (15)
v • d • e


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JUN 0 31c89 butBER TME

' REY. lSSUE/DATE ECA 0.0 STATION BLACKOUT Rev. 3 i

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PURPOSE I

This procedure provides actions to respond to a stadon blackout.

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SYMPTOMS OR ENTRY CONDITIONS 1.

The symptoms of a loss of all AC power is the indicadon that all main and emergency l

AC buses a deenerprod.

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2.

This procedun is entered from E 0, REACTOR *Ilt!P OR S AFETY INJECTION, Step 3.

on the indicadon that all AC emergency buses are deenerpaed.

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i 8910250250 091007 fDR ADOCK 05000213 Page 1 of 15 PDR

JUN 0 31985 l

i N Wi&ER MU REV. IS 5l.'ESATE l

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ECA 0.0 STATION BLACKOUT Rev.3 l

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STT.P ACDON4XPECTED RESPONSE RESPONSE NOT OBTAINED 4

NOTEt o STEPS ONE THROUGH FOUR ARE IMMEDIATE ACTION STEPS

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o CRITICAL SAFCTY FUNCTION STATUS TREES SHOULD RE l

d MONITORED FOR INFORMATION ONLY. FUNCTION RESTORATION PROCEDURES SHOULD NOT BE IMPLEMEb7ED.

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o E!!! 131, EMERGENCY ASSESSMEhT, SHOULD RE IMPLEMEb7ED.

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1 VERIFY REACTOR 1 RIP:

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a. Push reactor trip button
b. Check neutron flux DECREASING l

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VERIFY TURBINE TRIP:

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a. Push turbine trip button
b. Check the following:
b. Oose all four main steamline j
1. Both turbine trip valves CLOSED trip valves.

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2. Allturbine controlvalves CLOSED
c. Check DC Lube Gil Pump -
c. Manually start DC Lube Oil Pump.

RUNNING 4

d. Check DC Airside Seal Oil Pump -
d. Manually start DC Airside Seal Oil l

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RUNNINO Pump.

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3 CHECK IF RCS IS ISOLA 1TD:

ATIEMPTTO IDEhTFY AND l

i ISOLATED LEAKAGE.

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o Check RCS pressure -

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STABLE QR INCREASING o Check PRZRlevel STABLE i

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VERIFY AFW FLOW:

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a. Check AUTO AUX feeds sier WLs -
a. Perform the following:

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'IRIPPED i

1. Mar.ually QR locally stan the l
l turbine driven AIM' pumps.

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2. Manually QR Iccally open the 1

feedwater bypass AOVs.

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b. Verify otal AFW flow-
b. Perform the foliowing:

j GREATER TRLN 320 GPM

1. locally stan turbine driven AFW pumps.

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2. Locally open feedwater bypassvalvi greater than 320 GPM.

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JUN 0 31988 i

SutBER MM REV,155UEMATE ECA 0,0 STATION BLACKOUT Rev.3

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STEP ACTION / EXPECTED RESPONSE RESPONSE NOT 05TAISTD f

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11tY TO RESTORE POWER TO ANY AC EMERGENCY BUS:

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a. Energize AC emergency bus with
a. Energin AC emergency bus using 1

diese generator, any available @wer supply i

j (SEE OPPOS TE PAGE).

1.

Push dieul start button 2.

Push and hold field flash button

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until diewl output voltage is 1

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. prater than 4000 Volts 3.

Mace generator breaker sync.

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switch in the "on" position l

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4. Close diesel generator output j

breaker l

5. Place generator breaker s>w, f

switch in the "off" position i

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6. Verify AC emergency bus j

l energired 1

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b Check AC enxrgency buws enerpad -

b. QQ IQ Step 6, 1

AT LEAST ONE TRAIN OBSERVE CAtJT10N PRIOR TO t

STEP 6.

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Buses 8,4, and 5,

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Buses 9,6, and 7

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c. Check RCP lower bearing temp -
c. Perform the following, 1

LESS THAN 170* F I

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l. Clow seal water supply valves j
2. Close CCW thermal barr CH V 354A through 345D.

f isolation valve,CC V 841.

3. Start component cooling water i
4. Sk open thermal barrier CCW l

trip valves (CC TV 608, CC TV 912 and CC TV 913).

5. Slowly open thermal banier manual I

isolation valve (CC V 841) to

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establish cWing flow, i

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JUN 0 31988 l

NUMai.R mu REv. IsstmeATs ECA.0,0 STATION BLACKOUT Rev.3

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STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED

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6. E SI WL Relays are NQI actuated, TIEN start a charging pump.

E SI WL Relays are actuated, BIEN perform the following:

a. Check closed CH MOV.257.

E SQIclosed, 1

11EN manually QR locally close CH MOV 257.

b. Check open BA MOV 373.

E NQIopen, 11EN manually open BA MOV 373 QR BA MOV 32.

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c. Take charging pump control switch to the "Trip" then to 'he "Start" position.

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7. %HENlower bearing temperature is less than 170* F.

'IBEN slowly initiate seal injection i

to each RCP.

8. RETURNIQ prrxedure and step in effect.

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d. Start a compment cooling

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water pump

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e. Perform the following in start i

i a charging pump:

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Check SI WL Relays.

1 Perform the following:

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a. Oseck closed CH MOV.257.

E NOIclosed, j

DEN manually QR kxally i

close CH MOS257.

b. Check open BA MOV.373.

E NQIopen.

DIEN manually open BA MOV.373 On 'nA MOV 32.

c. Take charging pump control switch to the "Tnp" then n the "Start" x>smon.
d. LETURNIQ procedure and step inef!ect-
2. Start a charging pump I
f. RETURNIQ procedure and step in effect i

Page 4 of 15

JUN 0 31988 NUMBER Tm2 REV, ISSULDAn j

E C A.D.0 STATION BLACKOUT Rey,3 i

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SEP ACTION / EXPECTED RESPONSE RESTONSE NOT OBTAINED

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CAUTION:

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\\\\' HEN PO\\\\'ER IS RESTORED TO ANY AC ESfERGENCY BUS, RECO\\'ERY ACTIONS S!!OULD COhTINUE STARTING \\\\'ITH STEP 23.

o IF AN SI SIGNAL EXISTS OR IF AhY SI SIGNAL IS ACTUATED DURING TH15 PROCEDURE, IT SHCULD BE RESET TO PERAtlT StANUAL IDADING CF EQUIPAIEhT ON AN AC EAfERGENCY BUS.

o A SER\\' ICE WATER PUSfP SHOULD BE KEPT AVAllABLE TO AUTOSfATICALLY LOAD ONITS AC EAfERGENCY BUS TO PRO \\'IDE DIESEL GENERATOR COOUNG, L

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6 PLACE THE FOLL OWING EQUIPMENT l

CONTROL SWITCl{ES IN TPO:

o Charging pumps o itPSI pumps o LPSI pumps o Reactor Coolant pamps o CCW pumps I

o CARFANs o Main Feedwater pumps l

o Condensate pumps l

o liester Dre sumps I

l o Circulating Water pumps i

7 DISPATCil PERSONNEL TO LOCALLY l

RESTORE AC POWER:

I o Attempt to start and load diesels from I

diesel rtyxns (SEE OPPOSTE PAGE)

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DISPATCil PERSONNEL TO LOCALLY CLOSE Tile FOI10 WING VALVES TO l

ISOLATE RCP SEALS:

I o Cil V 354A through 354D, set! w ater supply vahes in the valve reorn o CC.V 841, thetmal barrier CCW nunual isolation yah e in the blowdown mom i

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JUN031988 NUMBER TTRE I REY. ISSUE /DATE EC A 0.0 STATION BLACKOUT Rev.3

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STTP ACT10NSXPECED RESPONSE RESPONSE NOT OBTAINED 9

DISPATCH PERSONNEL TO LOCALLY 3SOLATE DWST FROM 1101WELL:

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o Locally close CD.V 631, Hotwell makeup manualisolation valve t

10 CifECK SG STATUS-

a. Check all four main feedwater flow
a. Locally clow all four main feedline control valves. CLOSED MOVs OR manualisolation vahes.

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b. Locally close all four SG blowdown i

manualisolation valves j

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CAUT10Nt A FAULTED O.7 RUPTURED SG THATIS I:0 LATED SHOULD

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RESfAIN ISOLATED. STEAbt SUPPLY TO Tile TURBINE DRIVEN AFW PUh!PS AfUST BE SfAINTAINED FR0hf AT LEAST ONE SG.

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J 11 OIECK SECONDARY Ih'TEGRITY:

a. Check SG wide range levels -
a. Isolate faulted SG(s):

i, STABLE OR INCP. EASING (SEE OPPOSTTE PAGE) i 1

o Isolate AFW Gow.

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I o Cose steam supply valve to AFW j

pump ard atmospheric vent valve.

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12 CHECK SG TUBE INIEGRTIY:

ATIBil'T TO IDENTIFY RUF7URED SG(s) ASQ CONTINUE %TTH STEP 13. t o Check main steamline radiation levels with portaNe metm -

WHEN RUI'TURED SG(s)IS l

INDICAili BACKGROUND 1 DEN 11FIED.

IllES ISOLATE RUF9URED SU(s).

o Check SG levels -

(SEE OPPOSITE PAGE) j NOT INCREASING IN AN t

l UNCONTROLLED MANNER o Isolate AFW flow.

i o Cose steam supply valve to AITV f.

l pump and atmospheric s ent velve.

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o Close low point drain valves.

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o Cose steamline ventvalve.

o Cose main steam line trip valse.

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JUN 0 3198F NMGER mu REV. ISSUE /DATE EC A 0.0 STATION BLACKOUT Rev.3

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STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE:

AUXIUARY FEEDWATER PUMPS AND FLOW WILL HAVE TO BE LOCALLY COhTROU.ED 13 CHECK INTACT SG LEVELS:

a. Check SG wide range levels -
a. hirintain total AUX feedwater flow I

GREATER THAN 63 %

greater than 320 GPM until wide I

(67 % FOR ADVERSE range levelin at least one SG is CONTAINMENT) greater than 63 %

(67 % for adverse containment),

b. Control AUX feedwater flow to
b. IE any So wide range level continues maintain wide range levels between to increase in an uncontrolled manner, 63 % and 69 %

THEN isolate ruptured SG.

(67 % and 69 % for adverse containment) o Isolate AFW flow, o Cose steam supply valve to AITV pump and atmospheric vent valve.

o Cose low point drain valves, o Cose steam line vent valve.

o Cose main steam line trip valve.

14 CHECK DC BUS LOADS:

a. Shed all large nonessendal DC loads:
1. Break vacuum in condenser to reduce turbine speed to O RPM, TdEH stop DC Lube Oil Pump 2
2. Purge generator H as soon as possible, IIIES stop DC Airside Seal Oil Pump 2

( H pressure can be reduced to 10 PSIG while generator is slowing dow11)

3. Turn off DC Bus emergency lighting that is not required 15 CHECK DWST LEVEL GREATER A'ITEMirr TO MAKEUP TO DWST.

THAN 54,000 0ALLONS Page 7 of 15

JUN 0 31988 NUMBER mLE REV. ISSUE /DATE E C A.0.0 STATION BLACKOUT Rev.3

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STEP ACT10N/ EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE:

o THE SG(s) SHOULD BE DEPRESSUPJZED AT MAXIMUM RATE TO MINIMlZE RCS INVENTORY LOSS DUE TO RCP SEAL FAILURE.

o PRZR LEVEL MAY BE LOST AND REACTOR VESSEL UPPER HEAD VOIDING MAY OCCUR DUE TO DEPRESSURIZATION OF SG(s). DEPRESSURIZATION SHOULD NOT BE STOPPED TO PREVENT THESE OCCURRENCES.

16 DEPRESSURIZE INTACT SG(s)

TO 260 PSIO:

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

AT LEAST ONE SG GREATER WAN 63 %

1. Maintain maximum AFW flow (67 % FOR ADVERSE until at least one SG wide range CONTAINMENT) levelis greater than 63 %

(67 % for adverse containment).

2. Continue with Step 17, WHEN wide range levelin at least one SG is greater than 63 %

(67 % for adverse containment),

THEN do Steps 16 b, c, d and e.

b. Ixcally dump steam at maximum rate using the following:

o Both AUX feedwaterpumps o Open steam line trip valve bypass valves and steam supply valves to Hog Jets

  • o Perform the following to use the atmospheric vent valve:
1. Isolate and disconnect control air at the atmospheric vent valve
2. Connect a pressurized nitrogen supply with regulator to the atmospheric vent valve
3. Iocally open atmospheric vent valve *1
c. Check RCS cold leg temperatures -
c. Control AUX feedwater flow and GREATER WAN 261' F steam bleed to stop SG

( 266' F FOR ADVERSE depressurization anc allow RCS to CONTAINMENT) heat up.

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JUN 0 31988 NUMBER TTRE REV. ISSUE /DATE ECA 0.0 STATION BLACKOUT Rev.3 i

STEP ACTION /EXPFCTED RESM)NSE RESPONSE NOT OBTAINED 16

d. Check SG pressures -
d. Continue with Step 17, LESS THAN 260 PSIG WHEN SG pressures are less than 260 PSIG, THEN do Step 16 e, l
e. Locally control AUX feedwater pumps and steam bleed to maintain SG pressures at 260 PSIG 17 CHECK REACTOR SUBCRITICAL:

CONTROL AUX FEEDWA*ER FLOW AND STEAM BLEED TO STOP SG o Check intermediate range startup rate -

DEPRESSURIZATION TO ALLOW ZERO QR NEGATIVE RCS TO HEAT UP.

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CAUTION:

IF CONTROL S%' ITCH FOR ANY SHUTDOWN CHARGING PUhfP %'AS TAKEN TO THE TRIP POSITION, THE PUhfP(S)

AfAY AUTO START %' HEN BOTH Si %'L RELAYS ARE RESET.

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NOTEt DEPRESSUR12ATION OF SGs WILL RESULT IN St ACTUATION, DUE TO COOIDOH'N OF THE RCS, SI SHOULD BE RESET TO PERSffT AfANUAL LOADING OF EQUIPhfENT ON AC EhfERGENCY BUSES.

18 CHECK SI WLs:

a. Check SI WLs - TRIPPED
a. WHEN SIis actuated.

THEN do Steps 18 b,19 and 20.

QQIQ Step 21,

b. Reset SI and containment isolation:
1. Check containment pressure -
1. Perform the following:

LESS THAN 5 PSIG

a. Open CKTs A13 and B13 in DC panels A and B.
b. Reset SI WL Relays,
c. IE charging pump control switch (es) are SQIin FO, THEN restore low discharge pressure auto start for shutdown charging pump (s) by taking pump control switch (es) to the Trip" position then releasing switch (es) to the "Auto" position.
d. QQ IQ Step 19.
2. Reset Si and containment isolation i

(SEE OPPOSITE PAGE)

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JUN 0 31988 NUMBER MLE REV. ISSUE /DATE E C A.O.0 STATION BLACKOUT Rev. 3 i

STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED 19 VERIFY CONTAINMENT ISOLATION LOCALLY CLOSE CON"I AINMENT VALVES CLOSED ISOLATION VALVES.

(SEE OPPOSITE PAGE) 20 CHECK CONTAINMENT PRESSURE OPEN RH MOV 31 LESS THAN 40 PSIG (FIRE MAIN TO CONTAIN3 TENT SPRAY),

WHEN CONTAINMENT PRESSURE DECREASES TO 35 PSIG, THEN CLOSE RH MOV 31.

21 CHECK CONTAINMENT MANUALLY 0E LOCALLYCLOSE RADIATION LEVELS NORMAL CONTAINMENT ISOLATION VALVES.

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.i JUN 0 31986 NUMBER EU REV. ISSUE /DAR ECA 0.0 STATION BLACKOUT Rev.3 l

l SEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED 22 CHECK IF AC EMERGENCY POWER IS RESTORED:

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a. Check AC emergency buses energized -
a. Continue to control RCS conditions AT LEAST ONE TRAIN and monitor plant status:

l Buses 8. 4 and 5

1. Check status oflocal actions:

2 Buses 9,6 and 7 o AC power restoration, o RCP sealisolation.

o DC power supply load shed.

2. Check BAMT temperature greater than 140' F.

E temperature less than 140* F.

THEN dispatch personnel to add primary water to the B AMT to reduce boron concentration.

3. Check spent fuel pool level greater than low level alarm.

E levelis less than low level alarm.

THEN dispatch personnel to add pnmary water to the spent fuel pool by opening the primary water fill valve.

4. RETURN IQ Step 15.

23 STABILIZE SG PRESSURES:

o Locally control AUX feedwater pump steam supply valves o Imally control valves used for steam bleeding i

Page 11 of 15

JUN 0 31988 NUMBER TTilE ftEV. ISSUESATE l

ECA 0.0 STATION BLACKOUT Rev. 3 1

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STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTALNED F

7 CAUTION:

THE LOADS PLACED ON THE ENERGlZED AC ESfERGENCY BUS SHOULD NOT EXCEED THE CAPACITY OF THE DIESEL GENERATOR ( 2850 KW ).

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24 VERIFY FOLLOWING EQUIPhtENT hiANUALLY LOAD EQUIPh!EST LOADED ON AC EhtERGENCY BUS:

AS NECESS ARY.

o htCC - 5 o Service water pump o Controlaircompressor o Battery charger o CARFANS as required r

7 CAUTION:

IF CObTROL SWITCH FOR ANY SHUTDOWN CHARGING PUbfP WAS TAKEN TO THE TRIP POSITION, THE PUSfP(S)

AfAY AUTO START WHEN BOTH SI WL PZLAYS ARE RESET.

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25 CHECK SI WLs:

a. Check SI WLs TRIPPED a QQIQ Step 26,
b. Reset SI and containment isolation:

1.

Check containment pressure -

1. Perform the following:

LESS THAN J PSIG

a. Open CKTs A13 and B13 in DC panels A and B.
b. Reset SI WL Relays,
c. IE charging pump control switch (es) are h'0Iin TPO.

TilEN restore low discharge pressure auto start for shutdown charging pump (s) by taking pump control switch (es) to the switch (position then releasing Trip" es) to the "Auto" position.

d. QQ IQ Step M.

2.

Reset Si and containment isolation l

(SEE OPPOSITE PAGE)

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JUN 0 31986 NUMBER TTI12 REV. ISSUE /DATE ECA 0.0 STATION BLACKOUT Rev.3

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STEP ACTION /EXPECI'ED RESPONSE RESPONSE NOT OBTAINED i

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i 26 CHECK IF SIIS REQUIRED:

a. Check RCS pressure -
a. ftQIQ Step 27.

LESS THAN 1475 PSIG (1700 PSIG FOR ADVERSE CONTAINMENT)

b. Perform the following:

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1. Start one HPSI pump
2. Open all fourloop SI MOVs
c. Check RCS pressure -
c. QQ IQ Step 27.

LESS THAN 405 PSIG (635 PSIG FOR ADVERSE CONTAINMENT)

d. Perfo>m the following:
1. Start one LPSI pump
1. G.QIQ Step 27.
2. Open both core deluge valves
2. IE both core deluge valves fall to open, THEN perform the following:

a.

Stop LPSI pump.

b.

QQIQ Step 27.

c. QQIQ Step 28 I

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JUN0d1Ses NUMBER TITI.E REV. ISSUE /DATE EC A 0.0 STATION BLACKOUT Rev.3 l

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i STEP ACTION / EXPECTED RESPONSE RESPON3E NOT OBTAINED 27 ESTABLISH CHARGING FLOW:

a. Verify RCP sealinjection -
a. Imally close CH V-354A through ISOLA ~ED CH V 354D toisolate sealinjection,
b. Perform the following to stan a charging pump:
1. Check CH h10V-257 OPEN 1 E SI WL Relays have NOlactuated.

THEN manually open CH MOV 257.

E SI WL Relays have actuated, THEN perform the following:

a. Check closed CH hiOV 257.

E NOIclosed.

THEN manually OR locally close CH htOV 257.

b. Check open BA MOV-373.

E NOIopen, THEN manually open BA MOV 373 DR BA MOV 32.

c. Take charging pumo control switch to the "Tri position. p" then to the "Stan"
d. GQIQ Step 27 c.
2. Stan a charging pump
c. Control charging flow to maintain PRZR level Page 14 of 15

JUN 0 31988 NUMBER 111 L.E REV. ISSUE /DATE l

ECA 0.0 STATION BLACKOUT Rev.3 l

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STEP ACTION 5XPECTED RESPONSE RESPONSE NOT OBTAINED 28 VERIFY SERVICE WATER SYSTEM OPERATION:

a. Verify valve alignment:
a. Manually align valves.

o SW MOV 1,2,3 and 4 CLOSED

o. SW AOV 8 and 9-CLOSED
b. Verify service water pump -
b. Manually start service water pump RUNNING
c. Open breakers for SW MOV 1,2,3 and 4, THEN locally open valves as reqtiired 29 SELECT RECOVERY PROCEDURE:
a. Check RCS subcooling based on core
s. QQIQ ECA 0.2, exit thermocouples -

STATION BLACKOUT RECOVERY GREATER 'lliAN 32' F WITH St REQUIRED, Step 1.

(SEE OPPOSITE PAGE FOR ADVERSE CONTAINMENT)

b. Check PRZR level-
b. QQIQ ECA 0.2, GREATER THAN 10 %

STATION BLACKOUT RECOVERY (24 % FOR ADVERSE WITH SI REQUIRED, Step 1.

CONTAINMENT)

c. Check SI uipment -
c. IE SI equipment actuated, NOT A ATED UPON AC THEN G.Q IQ ECA 0.2, POWER RESTORATION STATION BLACKOUT RECOVERY WITH St REQUIRED, Step 1.
d. QQIQ ECA 0.1, STATION BLACKOUT RECOVERY WITHOUT SI REQUIRED, Step 1 1

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