ML20204J669

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Rev 5 to Emergency Operating Procedure ES-1.3, Transfer to RHR Recirculation
ML20204J669
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-1.3, NUDOCS 8810250211
Download: ML20204J669 (8)
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Text

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JUN 0 31988 4 t NUMBER TTn.E REY. ISSUE /DATE ,

ES.I.3 TRANSFER TO RHR RECIRCULATION Rev. 5

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i A. PURPOSE i i

d This procedure provides the necessary instructions for transferring the safety injection system to the recirculation mode.  !

B. SYMPTOMS OR ENTRY CONDITIONS {

This procedure is entered from: j

1. E 1, LOSS OF REACTOR OR SECONDARY COOLANT, Step 14, I on low RWST level.
2. ECA 2,1, UNCONIROLLED DEPRESSURIZATION OF ALL STEAM GENERATORS Ste on low RWST level.p 8,
3. All other rocedures whenever RWST level reaches t! e switchover serpoint of 130,000 allons, i

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JUN 0 31988 NUMBER TTTLE REY. ISSUE /DATE ES.I.3 TRANSFER TO RilR RECIRCULATION Rev. 5 i STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAL .9 CAUTION: o STEPS ONE THROUGH THREE SHOUw BE PERFORSfED '

WITHOUT DELAY.

o SI RECIRCULATION FLOW TO THE RCS AfUST BE  !

SfAlhTAINED AT ALL TISIES. i o IF OFF SITE POWER IS LOST AFTER Si RESET, AfANUAL ,

ACTION SfAY BE REQUIRED TO RESTART SAFEGUARDS l EQUIPSfEhT. <

i o IF COhTROL SWITCH FOR ANY SHUTDOWN CHARGING l PUhfP WAS TAKEN TO THE TRIP POSITION, THE PUSfP(S)

AfAY AUTO START WHEN BOTH SI WL RELAYS ARE RESET.

o IF CORE COOUNG IS DEGRADING AND RADIATION '

LEVELS PERAllT, DISPATCH AN OPERATOR TO RESf0VE THE BLOCK FROSi RH FCV 796 AND RESTORE ITS AIR SUPPLY, THEN OPERATE VALVE AS REQUIRED.

o CAREFULLY Af0NITOR PAB RADIATION LEVELS AFTER PLACING THE RHR SYSTESt ON RECIRCULATION. l l

o RHR RECIRCULATION SHIFTOVER SHOUD BE  ;

COAfPLETED BEFORE RWST LEVEL DROPS TO 43.000  ;

GALLONS TO PREVEhT DAbfAGE TO ECCS PUSfPS. l 1

NOTE: o FODOUT PAGE SHOUm BE OPEN.

o COhTAINAfEh7 PRESSURE SHOULD BE Af0NITORED. IF i PRESSURE APPROACHES 40 PSIG, OPEN FIRE STAIN TO COhTAINhfEhT SPRAY. RH Af0V 31, TO REDUCE PRESSURE, WHEN PRESSURE DECREASES TO 3S PSIG, CLOSE RH Af0V 31.  ;

I RESETSI ANDCONTAINMENT  !

ISOLNDON:

a. Check containment pressure - a. Perform the following: i LESS THAN 5 PSIG i
1. Open CKTs A13 and B13 in DC panels A and B.
2. Reset SI WL Relays.

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JUN 0 31988 :

NUMBER TTIU REY. ISSUE /DATE ES.I.3 TRANSFER TO RHR RECIRCULATION Rev,5 l

STEP ACTION /EXPECfED RESPONSE RESPONSE NOT OBTAINED l

1 3. E charging pump control i switch (es) are SQIin TPO, {

IIEE restore low discharge j pressure auto stan for shutdown chx ging pump (s) by taking pu '

control switch (es) to the "Tnp,mp position then releasing switch (es)  !

to the "Auto" position. I l

4 QQIQ Step 2. l ,

b. Remt Si and containment isolat'on (SEE OPPOSITE PAGE) i 2 OPEN SW MOV 5 AND SW MOV 6 LOCALLY OPEN SW MOV 5 AND l (SW TO RHR HX). ENSURE ONE SW SW MOV 6.  ;

PUMP RUNNINO FOR EACH RHR HX  !

3 ALION RHR SYSTEM FOR  !

RECIRCULATION:  ;

a. Ch ck containment waterlevel- I GREATER THAN 2.25 FEET ,

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b. Open containment sump suction b. Locally open containment sump  :

valve, RH MOV 22 suction valve, RH V 808A.

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E RH V 808A EQIopened. I

'nIEN locally open RH MOV 22 to i estabush a flow path from the sump to se RCS.  !

i f i

E flow path EQIestablished, i THEN QQ IQ ECA 1,1, .

LOSS OF EMERGENCY COOLANT RECIRCULATION, Step 1. l

c. Check core deluge valves, SI MOV 871 A c. Open SI MOV 871A and i and SI MOV 871B - OPEN SI MOV-871B.  !
d. Close SI MOV 861B and any one d. E SI MOV 861B EQIclosed,  !

, other loop Siisolation MOV ItiEN close any two loop SI '

l isolation MOVs. *

e. Stop both LPSI pumps and place i f control switches in'IPO l

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JUN 0 31988 NUMBER TTT12 REY. ISSUEMATE j ES.I.3 TRANSFER TO RiiR RECIRCULATION Rev. 5 i I

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STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED I i r .

7 CAUTION: o DO NOT START LPSI PUStPS %'ITH RH Af0V 874 OPEN.

LPSI PUAfP DISCHARGE PRESSURE %'1LL OVER PRESSURIZE THE HPSI BOOSTER PUSfP. l o DO NOT START (JSI PUSfPS %' HEN ON CONTAINAfENT SUhfP RECIRCULATION. LPSI PUh!P DISCHARGE '

PRESSURE H'lLL SEAT RHR PUSIP DISCHARGE CHECK VALVES AND SUStP RECIRCULATION %'lLL BE LOST.  !

L J j 3 f. Stan one RHR pump f. IE pump does NOI stan.

DIEN start the other RHR pump.

IE NO RHR pump available, ElEN QD IC he '.a. a.:.

LOSS OF E'rMhNCY COOLANT RECIRCl(A flON, Step 1.

g. Check one charging pump RUNNLNG g. Perfomt the following to stan a (Stop one pump if two running) charging pump:
1. Isolate sealinjection i
2. Check closed CH htOV 257. 3 IE NQIclosed,  :

THEN manually QB locally close l CH htOV 257. l

3. Check open BA htOV 373. I IE NOIopen, i THEN manually op.en I B A htOV 373 08 BA stOV 32. I
4. Take charging pump control switch l to the "Trip" then to the "Stan"  !

position. l IE NQ charging pump available,

, HiEN GO IQ ES 1.4,  !

TRANSFER TO TWO PADI i RECIRCULATION, Step 3.

h. Check RCS pressure - h. GQ IQ Step 3 j.

LESS THAN 1500 PSIO AstPS. i. GQIQ ES 1,4, l

i. Check GREAniRRHRTHA pumh 140 AhtPS 1RANSFER TO TWO PAT 11 I

) RECIRCULATION, Step 1. l t

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JUN 0 31988 NUMBER TTTU REY.15$UESATE i ES.I.3 TRANSFER TO RHR RE IRCULATION Rev.$

4 STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTALNED 3 j. Check CH MOV 292B and J. Open CH MOY 292B and CH MOV 292C OPEN CH MOV ?92C.

k. Fully open CH FCV 110 and CH FCV.110A i (Place control select switch in neutral, then manually open both valves) }
l. Perform the following to isolate the charging suction header: 1 1 Stop all RCPs
2. Cose all four seal water returo MOVt.

3 Close CH TV 334 i

(Seal wster terum trip valve)

4. Stop metering pump I
5. Cose CH AOV 278(Metering i pump suction division valve)
6. Icontainment pressure is prester than 5 PSIO,

.liF.S perform the following:

, a. Close CH W 240, j CH TV 241 i (Seal water return trip valves) i

b. Cose CC TV 1411 i (CCW return from RCP oil j celers) l
m. Onen RH MOV 33A and Ril MOV 33B l
  • n. Check RHR pump discharge pressure - n. Stop RHR pump, GREATER THAN 80 PSIG *1 T11EN GD TD ECA 1.1, LOSS OF EMERGENCY COOLANT REC 7J.CULATION, Step 1.  ;
o. Close CH MOV 257. l
o. Check CH MOV 257 CLOSEO I

! p. Check BA MOV 32 CLOSED p.Ckse BA MOV 32.

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! q. Cose BA MOV 373 I, l  ;

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JUN 0 31988 NUMBER TTTLE REV ISSUE /DATE i ES 1,3 TRANSFER TO RHR RECIRCULATION Rev.5 l

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STEP ACTION /EXECIED RESPONSE RESPONSE NOT 03TAINED l'

3 r. Check RHR and charging pumps - r. E RHR ump cavitating, ,

NOT CAVITATING THEN rform the following:

  • a. Stop operating charging pump.
b. Stop operating RHR pump.
c. Open BA hiOV-373.
d. Close RH hiOV-33A and RH hiOV 330.
e. Start a charging sump.
f. QQIQ ECA 1.L.

LOSS OF EhiERGENCY COOLANT RECIRCULATION, Step 1. *1 E charging pung cavitating THEN perfomi tne following:

a. Equally throttle both core deluge isolatioa hiOVs until operating RHR pump AhiPs are less than 220 AhiPs.
s. Stop both HPSI pumps 4 VFRIFY RHR AND CHARGING FLOW BY hiONITORING REACTOR VESSEL FLUID LEVEL,TEhiPERATURE AND SUBCOOLING TO ENSURE ADEQUATE CORE COOLING Page 6 of 8

JUN 0 31988 4

NUMBER TTIII REY. ISSUE /DATE ES.I.3 TRANSFER TO RHR RECIRCULATION Rev. 5 l

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5TEP ACTION /EXPECIED RESPONSE RESPONSE NOT OBTAINED 5 OPEN AND LOCK OPEN BREAKERS FOR:  !

BA MOV-373, BA MOV-32, j SI MOV 861 A, SI MOV-861B l SI MOV 861C, SI MOV 861D  :

SI MOV 871 A, SI MOV 871B i LD MOV 200, CH MOV 257 l RH MOV 22  ;

6 MONITOR CORE EXIT E APPROACHING 700' F, I THERMOCOUPLES - THEN PERFORM THE FOLLiW/ING: !

LESS THAN 700* F  !

o Stan additional charging pump.

.QR o Stan additional HPSI pump.

7 MONITOR CHARGING AND IE RHR PUMP CAVITATING, l RHR PUMPS NOT CAVITATINO THEN PERFORM THE FOLLOWING: I

  • a. Stop operating charging pump.
b. Stop operating RHR pump. i
c. Open BA MOV-373.
d. Close RH MOV-33A and l RH MOV-33B. l
e. Start a charging pump. i
f. QQIQ ECA-1.1, l LOSS OF EMERGENCY l COOLANT RECIRCULATION,  :

Step 1. *3  !

t IE CHARGING PUMP CAVITAT NG, l IllEN PERFORM TiiE FOLLOWING: ;

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

8 MAINTAIN SEAL INJECTION TO ,

RCPs DURING COOLDOWN I l

9 CONTINUE COOLDOWN OF l TIIE RCS TO LESS THAN 200* F l l

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JUN 0 31988 NUMBER Tm2 REV. ISSUE /DATE l E S - 1.3 TRANSFER TO RIIR RECIRCULATION Rev.5 i

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STEP ACTION /EXPECIED RESPONSE RESPONSE NOT OBTAINED NOTE: WHEN RCS PRESSURE IS LESS THAN 100 PSIG AND RCS l TEMPERATURE IS LESS THAN 200*F, CONSULT WITH PLANT i ENGINEERING STAFF PRIOR TO TERMINATING TWO PATH \

RECIRCULATION (TO PREVENT BORIC ACID PRECIPITATION). l 10 WHEN RCS PRESSURE IS LESS CLOSE SEAL WATER RETURN THAN 100 PSIG VERIFY SEAL MOVs.

WATER RETURN MOVs CLOSED 11 WHENTHE RCS IS AT ATMOSPHERIC PRESSURE PERFORM THE FOLLOWING:

a. Isolate sealinjection to all four RCPs
b. Close CH MOV 2928 and CH MOV 292C i
c. Stop operating charging pump  ;

12 CLOSE RH MOV 33A AND RH MOV 33B 13 OPEN AND LOCK BREAKERS FOR t RH MOV-33A AND RH MOV 33B l l

14 RETURN IQ PROCEDURE AND STEP l IN EFFECT l l

END i

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