ML20204J638

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Rev 4 to Emergency Operating Procedure E-1, Loss of Reactor or Secondary Coolant
ML20204J638
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
E-1, NUDOCS 8810250202
Download: ML20204J638 (9)
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Text

JUN 0 31983 NUMBER ME REY. ISStlE/Dm E.1 LOSS OF REACTOR OR SECONDARY Rev. 4 COOLANT l

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A.

PURPOSE This procedure provides actions to recover from a loss of reactor or secondary coolant.

B.

SYh1PTOhtS OR ENTRY CONDITIONS I

This procedure is entered from 1.

E 0, REACTOR TRIP OR S AFETY INJECTION, Stea 23, FR H.1, RESPONSE TO LOSS OF SECONDARY HEAT SINK, Step 23, when a PRZR PORV is stuck open and its block valve can not be closed.

i 2.

E 0, REACTOR TRIP OR S AFETY INJECTION, Step 23, with any of the following symptoms:

high containment radiation, high containment pressure or high containment sump level.

3.

E-0, REACTOR TRIP OR S AFETY INJECTION, Step 33, ECA 2.1, UNCONTROLLED DEPRESSUR12ATION OF ALL STEAh! GENERATORS,

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Step 6, when RCS pressure is less than the shutoff head pressure of the LPSI pumps.

4.

ES 1.1, St TERhilNATION, Step 4, if RCS pressure decreases after stopping all but one charging pump.

5.

ES I.1, SI TERhtINATION, Step 8 and Step 25, FR I.2, RESPONSE TO LOW PRESSURIZER LEVEL, Step 4, j

l if SI has to be reinitiated.

6.

E 2, FAULTED STEAh! GENERATOR ISOLATION, Step 7, after identification and isoladon of a faulted SG.

7.

E 3, STEAh! GENERATOR TUBE RUPTURE, ATTACHh1ENT B. Step 13, after loop isolation is completed, j

8.

ECA 0.2, LOSS OF ALL AC POWER RECOVERY WTni SI REQUIRED, Step 9, I

after normalinjection mode conditions are established.

l 9.

ECA 1.2, LOC /. OUTSIDE CONTAINh1ENT, Step 3, when a LOCA outside containment is isolated.

10. FR C.1, RESPONSE TO INADEQUATE CORE COOLINO, Step 15 and Step 21, FR C.2, RESPONSE TO DEGRADED CORE COOLING, Step 15, after core cooling has been reestablished.
11. FR li.1, RESPONSE TO LOSS OF SECONDARY }{ EAT SINK, Step 1, if RCS pressure is less than all nonfaulted SG pressures.
12. FR il.1, RESPONSE TO LOSS OF SECONDARY IIEAT SINK, Step 23, l

after secondary heat sink has been reestablished and all PRZR PORVs are closed.

Page 1 of 9 0010250202 001007 ADOCK 05 g3 gDR

JUN O 31988 NUMBER TITIE REV. ISSUE /DATE E1 LOSS OF REACTOR OR SECONDARY Rev.4 COOLANT

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STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINTD l

NOTE:

o FOLDOUTPAGE SHOULD BE OPEN.

o SEAL INJECTION FLOW SHOULD BE ofAINTAINED TO ALL RCPs.

l o

IF A LOCA HAS OCCURRED, SOUND PLANT EVACUATION l

ALARhi AND INITIATE THE EhfERGENCY PLAN.

1 CHECK IF RCPs SHOULD BE STOPPED:

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a. Check HPSI QR charging pumps-
a. QQIQ Step 2.

AT LEAST ONE RUNNLNG

b. Check RCS pressure -
b. QQIQ Step 2.

LESS THAN 1150 PSIG (1380 PSIG FOR ADVERSE CONTAINMENT)

c. Stop all RCPs
d. Close all four serJ water retum MOVs
c. IE containment pressure is greater than 5 PSIG, l

THEN perform the following:

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1. Close CH TV 240, CH TV 241 (Seal water retum trip valves).

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2. Close CC-TV 1411 (CCW return fmm RCP oil coolers) f I

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JUN 0 31988 4

NUMBER UH.E REV. ISSUE /DATE E1 LOSS OF REACTOR OR SECONDARY Rey,4 COOLANT

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STEP ACT10N/ EXPECT 1ED RESPONSE RESPONSE NOT OBTAINED i

r 7t CAUTION:

o AN INTERhfEDIATE TO LARGE BREAK LOCA COULD CAUSE THE SG(s) TO EXHIBIT THE SAbfE SYSfPTOSi

( UNCONTROLLED DEPRESSURIZATION ) AS A FAULTED SG.

o of0NITOR DWST LEVEL. START ofAKEUP TO DWST BEFORE LEVEL DECREASES TO S4,000 GALLONS.

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2 CIIECK SECONDARY INTEGRITY:

a. Check all SG pressures -
a. E any SG pressure is decreasing in STABLE.QR INCREASING an uncontrolled manner AND the SG is b'QIisolated, THEN GQIQ E 2, FAULTED SG ISOLATION, Step 1.

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b. Check all SG pressures -
b. E any SG is completely depressurized GREATER THAN 100 PSIG AER the SG is EQIisolated, IllEN GQIQ E-2, FAULTED SG ISOLATION, Step 1.

3 CIIECK INTACT SG LEVELS:

a. Check wide range levels -
a. hiaintain total AUX feedwater flow GREATER THAN 63 %

greater than 320 GPM until wide (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. E any SG wide range level continues l maintain wide ran ge levels to increase in an uncontrolled manner, ;

between 63 % anc. 69 %

IllEN QQ IQ E 3, t

(67 % and 69 % for adverse SEAM GENERATOR RTBE I

I containment)

RUI'TURE, Step 1.

4 CllECK SECONDARY RMS GQIQ E 3, INDICATES B ACKGROUND STEAM GENERATOR TUBE RUPTURE, Step 1.

i o Air ejector RMS o SG blowdown RMS l

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JUN 0 31988 NUMBER TITLE REV. ISSUE /DATE E1 LOSS OF REACTOR OR SECONDARY Rev.4 COOLANT

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STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED r

7 CAUTION:

IF ANY l'RZR PORV OPENS BECAUSE OF HIGH PRZR PRESSURE, STEP S b SHOULD BE REPEATED AFTER PRESSURE DECREASES TO LESS THAN 2350 PSIG.

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5 CHECK PRZR PORVs AND BLOCK l

i VALVES:

a. Check power to block valves -
a. Restore power to block valves.

AVAILABLE

b. Check PORVs - CLOSED
b. WHEN PRZR pressure is less than 2350 PSIG, THEN manually close PORVs.
c. Check PORV block valves CLOSED
c. WHEN PRZR pressure is less than 2350 PSIG, THEN manually close PORV block valves.

6 CHECK IF SI FLOW SHOULD BE REDUCED:

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a. DO NOT STOP SI PUMPS.

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a. Check RCS subcoolingF QQIQ Step 8.

GREATER THAN 32 (SEE OPPOSITE PAGE FOR ADVERSE CONTAINMENT) i

b. Check secondary heat sink:
b. DO NOT STOP SI PUMPS.

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QQIQ Step 8.

l o Total AUX feedwater flow -

l GREATER'lliAN 320 GPM OfL o Wide range levelin at least one SG -

l GREATER THAN 63 %

i (67 % FOR ADVERSE CONTAINMENT)

c. Check RCS pressure -
c. DO NOT STOP SI PUMPS.

STABLE OR INCREASING QQIQ Step 8.

d. Check PRZR level-
d. DO NOT STOP St PUMPS.

GREATER THAN 10 %

Attempt to stablize RCS pressure (24 % FOR ADVERSE using normal PRZR spray.

I CONTAINMENT)

I QQ IQ Step 8.

Page 4 of 9

JUN 0 31988 NUMBER TIT 12 REY. ISSUE /DATE l

E.1 LOSS OF REACTOR OR SECONDARY Rev.4 i

COOLANT l

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STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAlbTD 7

QQIQ ES 1.1, Si TERMINATION, STEP 1 8

VERIFY CONTAINMENT SPRAY NOT REQUIRED:

a. Check containment pressure -
a. Manually initiate containment spray.

LESS THAN 40 PSIG WHEN containment pressure decreases to 35 PSIG, THEN close containment spray valves.

E only one LPSI pump operable, THEN open RH MOV-31 (fire main to containment spray).

WHENcontainment aressure decreases to 35 PSIC THEN close RH MOV-31.

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JUN 0 3 leg 3 NUMBER TTRE REV. ISSUE /DATE i

E-1 LOSS OF REACTOR OR SECONDARY Rev.4 COOLANT l

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STEP ACTION /EXPEC TED RESPONSE RESPONSE NOT OBTAINTD t

f F

7 CAUTION:

o of0NITOR RCS PRESSURE. IF RCS PRESSURE DECREASES l

TO LESS THAN 405 PSIG (635 PSIG FOR ADVERSE CONTAINhfENT), AfANUALLY STARTTHE LPSI PUhfPS TO SUPPLY WATER TO THE RCS.

o IF OFF SITE POWER IS LOST AFTER RESETTING SI, AfANUAL ACTION AfAY BE REQUIRED TO RESTART 1

SAFEGUARDS EQUIPEhfENT.

o IF CONTROL SWITCH FOR ANY SHUTDOWN CHARGING PUhfP WAS TAKEN TO THE TRIP POSITION, THE PUhfP(S)

AIAY AUTO START WHEN BOTH Si WL RELAYS ARE RESET.

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9 CHECK IF LPSI PUMPS SHOULD BE STOPPED:

a. Check RCS pressure -
a. QQ IQ Step 11, GREATER THAN 405 PSIG l

(635 PSIG FOR ADVERSE i

CONTAINMENT)

b. Check RCS pn:ssure -
b. QDIQ Step 10.

STABLE QB INCREASING t

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

I LESS THAN 5 PSIG l

a. Open CKTs A13 and Bl3 in l

DC panels A and B.

b. Reset SI WL Relays, c IE charging pump control i

switch (es) are EQIin TPO.

l IllEli restore law discharge pressure auto start for shutdown '

charging pump (s) by taking i

pump control switch (es) to the i

Trip" position then releasing j

switch (es) to the "Auto" Position..

d. QQ IQ Step 9 d.
2. Reset Si and containment isolation (SEE OPPOSITE PAGE)
d. Stop LPSI pumps and place in standby 1

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JUN 0 31988 NUhGER 1TTU REV lSSt2/DATE E.1 LOSS OF REACTOR OR SECONDARY Rev.4 i

COOLANT i

STEP ACTION /EXPEClliD RESPONSE RESPONSE NOT OBTAINED l

10 CHECK ALL SG PRESSURES IE ANY SG PRESSURE STABLE OR INCREASING DECREASING IN AN UNCONTROLLED MANNER, l

THEN BETURN IQ STEP 1.

I, 11 CHECK IF DIESEL GENERATORS i

SHOULD BE STOPPED:

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a. Verify ac emergency buses energized -
a. T to restore off site power to f

BOTH TRAINS BY OFF SITE both trains.

POWER (SEE OPPOSffE PAGE)

BUSES 8,4 and 5 IE b'QI restored, Ab'R

'111EN load the following equipment BUSES 9,6 and 7 on the ac emergency buses:

1. MCC - 5.
2. Control air compressors.
3. Semi vital 120 V buses.
4. Closed cooling system pumps.
5. Battery charger I A.
6. One component cooling water pump.

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7. One senice water pump for each diesel generator.
8. IE service water is supplied to RHR heat exchangers, IHEN use at least two senice water pumps.
9. Start CARFANS as required to limit containment pressure and temperature.
b. Stop any unloaded diesel generator and place it in standby (SEE OPPOSITE PAGE) i i

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JUN 0 31988 l NUMBER TTTI.E REV. ISSLTJDATE i

l E1 LOSS OF REACTOR OR SECONDARY Rev. 4 COOLANT l

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STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAlhTD 12 INMATE EVALUATION OF PLAhT STATUS:

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a. Verify RHR recirculation capability -
a. IE NQIverified.

THEN GQ IQ ECA.1.1, o Check power to RHR pumps -

LOSS OF EMERGENCY COOLAST -

AVAILABLE RECIRCULATION, Step 1.

o Check RHR heat exchangers -

AVAILABLE

b. Check PAB radiation levels NORMAL:
b. Attempt to identify and isolate leakage:

o Check stack RMS o Check RHR pit.

o Check PAB area monitors o Checkletdownisolated, o Check pipe trenches.

1 o Check inputs into ADTs and PDT.

c. Obtain system samples as necessary to aid evaluation
d. Evaluate plant equipment
e. Start additional plant equipment as necessay to assist in recovery 13 CHECK IF RCS COOLDOWN AND DEPRESSURIZATION IS REQUIRED:
a. Check RCS pressure -
a. LE LPSI pump amps are GREATER THAN 405 PSIG greater than 60 amps, (635 PSIG FOR ADVERSE

'111EN EQ IQ Step 14, COSTAINMENT)

b. GQIQ ES 1.2 POST LOCA COOLDOWN AND l

DEPRESSURIZATION, Step 1 l

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JUN 0 31988 NUMBER TT11E REV ISSUE /DATE E1 LOSS OF REACTOR OR SECONDARY Rev.4 COOLANT I

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STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED 14 CHECK IF TRANSFER TO RHR l

RECIRCULATIONIS REQUIRED:

a. Check RWSTlevel-
a. RETURN.T_Q Step 12.

LESS THAN 130,000 GALLONS

b. GDIQ ES 1.3, l

TRANSFER TO RHR RECIRCULATION, Step 1 15 CHECK IF INTACT SGs SHOULD BE DEPRESSURIZED TO RCS PRESSURE:

a. Check RCS pressure -
a. QQIQ Step 16.

LESS THAN INTACT SG PRESSURES

b. Check SG(s) radiation NORMAL
b. Identify ruptured SG(s).

THEN isolate ruptured SG(s) o Stack RMS, Char.nels 14A and 14B (SEE OPPOSITE PAGE) o Air ejector RMS l

o SG blowdown RMS I

c. Dump steam to condenser from intact
c. Dump steam from intact SGs using l

l SGs until SG pressures are less than atmospheric vent valve until SG j

RCS pressure pressures are less than RCS pressure.

16 DEHRMINEIF REACTOR VESSEL HEAD SHOULD BE VESTED:

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a. Consult plant eagineering staff i

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17 EVALUAE LONO TERM PLAST STATUS:

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a. Consult plant engineering staff j

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