ML20204J814

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Rev 4 to Emergency Operating Procedure ECA-0.2, Station Blackout Recovery W/Steam Injection Required
ML20204J814
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-.2, ECA-0.2, NUDOCS 8810250258
Download: ML20204J814 (6)
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Text

JUN 0 31988 i

MStBER TTTLE REV. ISSUE /DATE j EC A 0.2 STATION BLACKOUT RECOVERY Rev. 4 WITH SI REQUIRED A. PURPOSE This procedure provides actions to use engineered safeguards systems to recover plant conditions following restoration of AC emergency power.

B. SYMPTOMS OR ENTRY CONDITIONS This prccedure is entered from:  !

1. ECA 0.0, STATION BLACKOUT Step 29, when AC emergency power is restored and SIis required.
2. ECA-0.1, STATION BLACKOUT RECOVERY WTITIOUT SI REQUIRED, Steps 4 and 18, if SIis required.

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8010250250 001007 Page 1 of 6 PDR ADOCK 05000213 r* PDR

i JUN 0 31988 NUMBER TTI12 REY. IS5UE/DATE ECA 0.2 STATION BLACKOUT RECOVERY Rev.4 WITH SI REQUIRED STEP ACT10N/ EXPECTED RESPONSE RESPONSE NOT OBTAINED F 7 CAUTION: THE LOADS PLACED ON THE ENERGlZED AC EhfERGENCY BUS SHOULD NOT EXCEED THE CAPACllY OF THE DIESEL GENERATOR (2850 KW EACH)

L J NOTE: CRITICAL SAFETY FUNCTION STATUS TREES SHOULD BE Af0NITORED FOR INFOR&fATION ONLY. FUNCTION RESTORATION PROCEDURES SHOULD NOT BE ISfPLESfENTED PRIOR TO CO&fPLETION OF STEP 7.

1 CIIECK RWST LEVEL - QQ IQ ES 1.3. STEP 1.

GREATER DIAN 130,000 GALLONS IE ES 1.3. TRANSFER TO RHR RECIRCULATION QR ES 1.4 TRANSFER TO BVO Pani RECIRCULATION IS COMPLETE, THEN EQIQ STEP 3. l I

2 VERIFY SIINJECTION FLOW:

a. Verify HPSI MiQ LPSIpumps- a. Start SI pumps as necessary.

RUNNING l

b. Verifyloop SI htOVs OPEN b. Open valves as necessary SI MOV 861 A SI MOV 861B SI MOV 861C SI MOV 861D
c. Verify core deluge MOVs OPEN c. Open valves as necessary.

SI MOV 871A SI MOV 871B 3 CHECK RCP TIIERMAL B ARRIER CCW ISOLATION STARJS:

a. Check diermal barrier manual return a.12cally close thermal banier return isolation valve, CC V 841 - isolation valve, CC V 841.

CLOSED a

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JUN 0 31988 NUMBER TTT1.E REY. ISSUE /DATE EC A 0.2 STATION BLACKOUT RECOVERY Rev.4 WITH SI REQUIRED STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED NOTE: IF DIESEL GENERATORS XAVE FAILED TO ENERGlZE AC EMERGENCY BUSES, RESTORE POWER TO BUSES \

( SEE OPPOSITE PAGE).

4 MANUALLY LOAD THE FOLLOWING EQUIPMF?C ON AC EMERGENCY BUS:

a. Checkcontrolair AVAILABLE a. Start one contml air compressor,
b. Start CARFANs as necessary
c. Establish CCW flow:
1. Check system valve alignment 1. Manually DR locally ali Sn valves as necessary.
2. Start one CCW pump
d. Energize MCC(s) as necessary by performing the following:
1. Strip all non essentialloads from MCC(s) to be energized
2. Close supply breaker for I

MCC to be energized

e. Start addidonal equipment as necessay L

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JUN 0 31988 NUMBER TTILE REV. ISSUE /DATE ECA 0.2 STATION BLACKOUT RECOVERY Rev.4 WITH SI REQUIRED

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STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED 5 CEECK CHARGING SYSTEh!

STATUS:

a. Verify suction valves aligned as a. Align suction valves as necessary.

appropriate for existing plant Conditions

b. Check charging pumps - b. IE power avaitable, AT LEAST ONE RUNNING Check closed seal water supply valves CH V 354A through CH V 354D, THEN start one charging pump.

IE power b'0I available, 111EN QQ TD Step 6.

r 7 CAUTION: MONITOR DWST LEVEL. START MAKEUP TO DWST BEFORE LEVEL DECREASES TO 54,000 GALLONS.

L J 6 CEECK ISTACT SG LEVELS:

a. Check wide range levels - a. hiaintain total AUX feedwater flow GREATER THAN 63 % greater than 320 GPhi until wide (67 % FOR ADVERSE range levelin at least one SG is CONTAINI, TEST) greater than 63 %

(67 % for adverse containment).

b. Control AUX feedwater flow to maintain wide range levels between 63 % and 69 % -

(67 % and 69 % for adverse containment) 7 VERIFY COSTAINhiEST SPRAY NOT REQUIRED:

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

LESS THAN 40 PSIG WHEN containment aressure decreases to 35 PSIC.,

THEN close containment spray valves.

IE only one LPSI pump operable, 111Eh open RH.htOV 31 (fire main to containment spray).

WHENeontainment pressure decreases to 35 PSIC ,

THEN close RH.htOV 31.

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JUN 0 31988 l

. ' NUMBER TME REV. ISSUE /DATE I EC A.O.2 STATION BLACKOUT RECOVERY Rev.4  !

WITII SI REQUIRED I i

i STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED r 7 CAUTION: o RCP THERhfAL BARRIER COOUNG SHOULD BE ESTABUSHED SLOWLY TO hilNihilzE POTENTIAL INTRODUCTION OF STEAh! INTO THE CCW SYSTEht.

o RCP SEAL INJECTION SHOULD BE ESTABUSliED SLOWLY TO hilNibf/ZE RCP THERSfAL STRESSES AND POTENTIAL SEAL FAILURES. UhfTT COOLDOWN RATE ON LOWER BEARING TO 1

  • F PER hilNUTE.

o AS PART OF SUBSEQUENT RECOVERY ACTIONS, RCPs SHOULD NOT BE STARTED PRIOR TO AN ENGINEERING STATUS EVALUATION.

6 J NOTE: FUNCTIONAL RESTORATION PROCEDURES SfAY NOW 3E

,, thfPLEhfENTED AS NECESSARY.

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8 ESTABLISH NORMAL COOLINO FLOW TO RCPs:  ;

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a. Check RCP lower bearing a. Perform the following:

temperature - '

LESS THAN 170* F 1. Close RCP thermal barrier manual rerum isolation valve (CC-V 841). l

2. Close RCP seal supply valves l (CH V 345A through D), i
3. Start one CCW pump. i
4. Start one charging pump. 1
5. Slowly open RCP thermal barrier manual return isolation valve.
6. WHEN tower bearing temperature is less than 170* F,  !

THEN slowly initiate RCP t I

seal water flow.

7. GQ IQ Step 9. i
b. Establish RCP normal cooling flow I IN ACCORDANCE WITit i NOP 2.81, OPERATION OF COMPONENT COOLINO SYST1!M, ANQ l NOP 2.61, SEAL WATF.R STARTUP NORMAL -

OPERATION. .

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JUN 0 31988 NUMBER TTIlE REV. ISSLTJDATE ECA 0.2 STATION BLACKOUT RECOVERY Rev.4 WITH SI REQUIRED  ;

k STEP ACTION / EXPECTED RESPONSE RESPONSE NOT OBTAINED  ;

9 QQIQ E 1.

LOSS OF REACTOR OR SECONDARY COOLANT, STEP 1. j i

END 7  !

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