ML20204J685

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Rev 5 to Emergency Operating Procedure ES-1.4, Transfer to Two Path Recirculation
ML20204J685
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
ES-1.4, NUDOCS 8810250216
Download: ML20204J685 (9)
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Text

JUN 0 31988 NUMBER EU REV. ISSUE /DAR j ES.I.4 TRANSFER TO TWO PATH RECIRCULATION Rev. 5 l

A, PURPOSE This procedure provides the necessary instructions for transferring the safety injection system to tw th recirculation to prevent boric acid precipitation and to provide core cooling after a l

B.

SYMPTOMS OR ENTRY CONDITIONS 1

This procedure is entered from:

l.

ES 1.3, TRANSFER TO RHR RECIRCULATION, Step 3 g, when charging pumps are not available.

2.

ES 1.3, TRANSFER TO RHR RECIRCULATION, Step 3 i, when RCS pressure is less than 1500 PSIG and RHR pump AMPS are less than 140 AMPS.

I 8810250216 831007 Page 1 of 9 PDR ADOCK 05000213 PDR P

[

JUN 0 31988

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1 NUMBER TITI.E REV.15 SUE /DATE ES 1.4 TRANSFER TO TWO PATH RECIRCULATION Rev. 5

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STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTEt FOLDOUT PAGE SHCULD BE OPEN.

i 1

ALIGN CHARGING PUMP SUCTION TO RHR PUMP DISCHARGE:

a. Check CH MOV-292B and
a. Open CH MOV 2928 and CH MO%292C - OPEN CH-MOW 292C.
b. Fully open CH FCV-110 and CH-FCV-110A I

(Place control select switch in neutral position and manually open both valves)

c. Perform the following to iwlate the charging sueti' '. header:
1. Stop all RCPs.
2. Close all four seal water return MOVs
3. Close CH-TV-334 (Seal water retum trip valve).

I

4. Stop metering pump.

$. Close CH AOW278 (Metering

? ump suction division valve)

6. Icm tainment pressure is greater than 5 PSIG, THEN perform the following:
a. Close CH-T%240, CH TV 241 (Seal water return trip valves)
b. Close CC TW1411 (CCW rerum from RCP oil coolers)
d. Oxn RH MOV 33A and "3MOV 33B
  • e. Check RHR pump discharge pressure -
e. Stop RHR pump, GREATER THAN 80 PSIG 'l THEN QQIQ ECA 1.1, LOSS OF EMERGENCY COOLANT RECIRCULATION, Step 1.

I t

Page 2 of 9

JUN03 E88 MM N

REV' ISSUE /DATE ES 1.4 TRANSFER TO TWO PATH RECIRCULATION Rev. 5 i

STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED 1

f. Check CH MOV-257 - CLOSED
f. Close CH MOV-257.
g. Check BA MOV 32 - CLOSED
g. Close BA MOV-32.
h. Close BA MOV-373 i Check RHR and charging pumps -
r. IE RHR pump cavitating, NOT CAVITATINO THEN perform the following:
  • a. Stop operating charging pump.

b.Stop operating RHR pump.

c. Open BA MOV-373.

d.Close RH MOV 33A and RH MOV 33B.

e. Start a charging pump.
f. QQ IQ ECA-1.L.

LOSS OF EMERGENCY COOLANT RECIRCULATION, Ster,1. *1 IE charging pump cavitating THEN perform the following:

a. Equally throttle both core deluge isolation MOVs until operating RHR pump AMPS are less than 220 AMPS.

2 CONTAWMENT RADIATION LEVEL QQIQ STEP 4.

LESS THAN 20,000 REM I

Page 3 of 9

JUN 0 31988

' W BER N

REV ISSUE /DATE '

ES 1.4 TRANSFER TO TWO PATH RECIRCULATIO 'I Rev. 5 i

STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OB 'AINED

'i 3

LINEUP HPSI FOR TWO PATH l

RECIRCULATION:

l l

a. Close breakers for SI h10V 24 i

and RH-hiOV 874 l

(Ensure power available at htCC 8)

[ CAUTION:

STEPS 3 b,c and d SHOULD BE INITIATED SinfULTANIOUSLY TO SilNIAtIZE ThfE THAT HPSI PUbfPS ARE OFF.

b. Stop both HPSI pumps
c. Close SI h10V 24
c. Locally close SI hiOV-24 E SI hiOV-24 b'QIoperable, THEN QQ IQ EOP 3.1-51, htANUAL ALIGNMENT OF RHR TG HPSI CROSS TIE VALVES, Step 1.
d. Close SI V 857A and SI V 857B
d. Unblock and cut in air to SI TV 875.

(HPSI pump recire isolations)

THEN check valve goes cimed.

e. Open RH MOV 874
e. E radiation levels
rmit, Locally open RH h OV 874.

E RH MOV 874 b'QIoperable, open SI MOV-24 IlEN QQ IQ EOP 3.1-51, MANUAL ALIGNMENT OF RHR TO HPSI CROSS TIE VALVES, Step 1.

f. Close CH MOV-292B and
f. Perform the following:

CH MOV 292C

  • 1.

Locally close CH V 286 and CH V-2868 (Charging flow control manual isolation valves).

2.

Close CH MOV 292B and CH MOV 292C.

3.

Locally reopen CH V 286 and CH V 286B.

  • 2
g. Start one HPSI pump
g. E pump does EQI start.

THEN stan the other HPSI pump.

h. Open one PORV and its block
h. Open the other PORV and its valve block valve.

t Page 4 of 9 f

JUN 0 31988 NUMBER TTTLE REV. ISSUE /DAll.

ES 1.4 TRANSFER TO TWO PATH RECIRCULATION Rev. S i

STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED 3

i Monitor operating core cooling E RHR PUMP CAVITATING, pumps -

THEN PERFORM THE FOLLOWING:

NOT CAVITATING

a. Close PORV and its block valve.

o Check RHR pump

o. Stop operating HPSI pump.

o Check HPSI pump

c. Stop operating charging pump.

o Check charging pump

d. Stop operating RHR pump,
c. Close RH MOV 874.
f. Open SI MOV-24.
g. Start a HPSI pum ).
h. Open a PORV anc. its block valve.
i. QQIQ ECA-1.1, LOSS OF EMERGENCY COOLAhT RECIRCULATION, Step 1. *1 E HPSI PUMP CAVITATING M CHARGING FUMP OPERATING, THEN PERFORM TFC.FOLLOWING:
a. Equally throttle both core deluge isolation MOVs untiloperating RHR pump AMPS are less thm 220 AMPS.
b. E HPSI pump still cavit: ing, THEN QQIQ Step 3 k.

E HPSI PUMP CAVITATING M CHARGING PUMP FQIOPERATING, THEN PERFORM THE FOLLOWLNG:

a. Equally throttle both core deluge isolation MOVs until operating RHR pump AMPS are less than 220 AMPS.

i Page S of 9

JUN 0 31988 NUMBER TTRE REV. ISSLT/DA TE I

~'

ES 1.4 TRANSFER TO TWO PATH RECIRCULATION Rev. 5

(

SEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED 3

j. QQIQ Step 5
k. Sto) operating HPSI pump,

'IliiS open CH MOV-292B and CH MOV 292C l

1. Check core exit thermocou ales -
k. QQ IQ Step 4.

l STABLE QR DECREAS NG

m. QQIQ Step 5 4

LINE UP FOR FILL HEADER OPERATION AS FOLLOWS:

a. Open all fou-loop fill header MOVs
b. Open fill header flow control valve, FH FCV-295, and bypass valve, FH MOV-344
c. Check both HPSI pumps STOPPED
c. Stop both HPSI pumps
d. Check RH MOV 874 - CLOSED
d. Close RH MOV 874, f

E N.QI closed,

'IHEN locally close RH MOV-874 E radiation levels permit.

5 VERIFY CORE COOLING FLOW BY l

MONITORING REACTOR VESSEL FLUID LEVEL, TEMPERATURE AND l

SUSCOOLING TO ENSURE ADEQUATE CORE COOLING 6

OPEN AND LOCK BREAKERS FOR:

B A MOV 373, BA.MOV-32 SI MOV 861 A, SI MOV 861B SI MOV 861C, SI MOV 861D SI MOV 871 A, SI MOV 871B LD MOV 200, CH MOV 257 RH MOV-22 7

MONITOR CORE EXTT E APPROACHING 700* F, TliERMOCOUPLES -

THEN PERFORM THE FOLLOWING: l LESS THAN 700* F o Start additional charging pump.

QR o Start additional RHR and HPSI pumps.

f Page 6 of 9

v JUN 0 31988 NUMBER TTTLE REV. ISSLTJDATE '

ES.I.4 TRANSFER TO TWO PATH RECIRCULATION Rev 5 l

ST1EP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAlhT.D 8

MONITOR OPERATING CORE If RilR PUMP CAVITATING, COOLING PUMPS THEN PERFORM THE FOLLOWING:

NOT CAVITATING

  • a. Close PORV and its blu.k valve, o Check RHR pump
b. Stop operating HPSI pump.

o Check HPSI pump

c. Stop operating charging pump.

o Check charging pump

d. Step operating RHR pump.
e. Close RH-MOV 874.
f. Open SI MOV 24.

j

g. Start a HPSI pump.

i

h. E HPSI pump rectre. isolation l

valves are closed, i

THEN open a PORV and its block valve.

i. GQ TD ECA 1.1, LOSS OF EMERGENCY COOLANT RECIRCULATION, Step 1. *1 E HPSI PUMP CAVITATING AND CHARGING PUMP OPERATING, THEN PERFORM THE FOLLOWING:
a. Equally tiuottle both core deluge isolation MOVs until operating l

RHR pump AMPS are less than 220 AMPS.

I

b. E HPSI mp still cavitating, THEN orm the following:
1. Stop HPSI aump.
2. Open CH&OV 292B and i

CH MOV 292C

3. Close RH MOV 874.

E HPSI PUMP CAVITATING AEQ CHARGING PUMP NOI OPERATING, TilEN PERFORM THE FOLLOWING:

a. Equally thmttle both core deluge isolation MOVs until operating RHR pump AMPS are less than 220 AMPS.

I I

Page 7 of 9 I

s JUN 0 31988 NUMBER TTTIE REV. ISSUE /DATE !

ES 1.4 TRANSFER TO TWO PATH RECIRCULATION Rev. 5 l

STEP l

ACilON/ EXPECTED RESDONSE RESPONSE NOT OBTAINED 9

CONTINUE TWO PATH RECIRCULATION l

TO REhiOVE DECAY HEAT FROh!UIE CORE. FURUiER SUBSEQUENT ACTION WILL BE DEERAIINED BY EVALUATING EXISTING PLANT CONDITIONS j

10 NiAINTAIN SEAL INJECTION TO i

RCPs DURING COOLDOWN 11 CONTINUE COOLDOWN OF THE RCS TO LESS THAN 200* F i

NOTE:

n' HEN RCS PRESSURE IS LESS THAN 100 PSIG AND RCS TEMPERATURE IS LESS THAN 200

  • F, CONSULT %'ITH PLANT ENGINEERING STAFF PRIOR TO TERMINATING TWO PATH RECIRCULATION (TO PREVENT BORIC ACID PRECIPITATION).

12 WHEN RCS PRESSURE IS LESS CLOSE SEAL WATER RETURN THAN 100 PSIG VERIFY SEAL htOVs.

WATER RERTRN hiOVs CLOSED 13 WHEN THE RCS IS AT AThiOSPHERIC PRESSURE PERFORht THE FOLLOWING:

a. Isolate sealinjection to all four RCPs l
b. Check CH hiOV-292B and
b. Close CH hiOV 2928 and i

CH hiOV 292C - CLOSED CH h!OV 292C.

}

c. Stop operating charging pump j
d. Close loop Siisolation hiOVs
c. Stop operating HSPI pump 14 CLOSE RH hiOV 33A AND RH hiOV 338 15 OPEN AND LOCK OPEN BREAKERS FOR RH-h!OV 33A AND RII hiOV 33B 16 RETURS IQ PROCEDURE AND STEP IN EFFECT l

END I

Page 8 of 9

JUN 0 31988 REV. ISSUE /DATE Rev. 5

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FOLDOUT EQR E.i SERIES PROCEDURES 1.

S1 REINITIATION CRITERIA hianually operate c'iarging QR SI pumps as necessary, E either condition listed below occurs:

o RCS subcooling based on core exit thermocouples - LESS THAN 32' F.

o PRZR level - CANNOT BE h1AINTAINED GREATER THAN 10%

(24% FOR ADVERSE CONTAINhiE?C).

2.

HER EA'.1H

SUMMARY

a.

SUBCRITi"ALLY - Nuclear power greater than 5%.

b.

CORE COOLIMG -

Core exit thermocouples greater than 1200* F.

c.

HEAT SINK -

Wide range level in all SGs less than 63%

(67% for adverse containment)

AEQ total feedwater flow less than 320 GPM.

d.

INTEGRIT (-

Cold leg temperature decmases greater than 100* F in last 60 minutes AND RCS cold leg temperature less than 231' F.

e.

CONTAINMENT-Containment pmssure greater than 40 PSIG.

3.

SECONDARY INTREGRITY CRITERIA GQIQ E 2, FAULTED STEAM GENERATOR ISOLATION, Step 1, unless SG is needed for RCS cooldown, E cither of the following conditions occur:

Any SG is decreasing in an uncontrolled manner o

AhD has EQIbeen isolated.

DR Any SG is completely depressurized o

AhD has EQT been isolated.

4.

E-3. TRANSITION CRITERION QQ IQ E 3, STEAM GENERATOR TUBE RUIYRJRE, Step 1, E any SG level increases in an uncontrolled manner QR any SG has abnormal radiation.

5.

8118 RECIRCULATION S%TTCHOVER CRITERION QQ IQ ES 1.3, TRANSFER TO RHR RECIRCULATION, Step 1 E RWST !cvel decreases to less than 130.000 gallons.

( LPS! pumps may cavitate E RWST level is less than 70,000 gallons. )

6.

AEW SUPPLY MAKEUP CRTTERION Start makeup to DWST before level decreases to $4,000 gallons.

Page 9 of 9

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