ML20205C163

Rev 2 to Emergency Operating Procedure EOP 35 ECA-0.2, Loss of All AC Power Recovery W/Si Required

ML20205C163
Person / Time
Site:	Millstone, Haddam Neck, 05000000
Issue date:	06/15/1988
From:	CONNECTICUT YANKEE ATOMIC POWER CO.
To:
Shared Package
ML20204H467	List: A07413, Forwards Specific Emergency Operating Procedures for Use During Incident Response Ctr Activation ML20204H704 ML20204H734 ML20204H868 ML20204H928 ML20204H963 ML20204J027 ML20204J039 ML20204J092 ML20204J109 ML20204J115 ML20204J120 ML20204J128 ML20204J133 ML20204J139 ML20204J147 ML20204J497 ML20204J543 ML20204J565 ML20204J627 ML20204J633 ML20204J638 ML20204J642 ML20204J659 ML20204J669 ML20204J685 ML20204J707 ML20204J733 ML20204J739 ML20204J746 ML20204J767 ML20204J781 ML20204J786 ML20204J814 ML20204J824 ML20204J849 ML20204J853 ML20204J865 ML20204J878 ML20204J902 ML20204J914 ML20204J920 ML20204J939 ML20204J947 ML20204J954 ML20204J958 ML20204J965 ML20204J975 ML20204J982 ML20204J994 ... further results
References
EOP-35-ECA-.2, EOP-35-ECA-0.2, NUDOCS 8810260410
Download: ML20205C163 (12)

Text

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. Stephen E. :aco 3-31-87 ,

87-12 Fora Approved by Statiun Suporintendant Effectivo Daco 50RC Mtg. No.

STATION PROCEDURE COVER SHEET

( A. IDENTIFICATION Number: E0P 35 ECA-0.2 Rev. 2

Title:

LOSS OF ALL AC POWER RECOVERY WITH SI REQUIRED

, Prepared By: H. K. COVIN  ;

B. REVIEW

! have reviewed the above procedure and have found it to be satisfactory.

TITLE SIGNATURE DATE 4 -

DEPARTMENT HEAD #7 m L, L 46 3'

'g I C. SPECIFIC UNREVIEWED SAFETY QUESTION tVALUATION REQUIRED: ,

Modifies intent of procedure and changes operation of systems as described ir design documents. YES [ ] NO (v]

(If yes, perform written USQ determination and Safety Evaluation, and contact Manager, Safety Analysis Branch to i determine need for Integrated Safety Evaluation.)

ENVIRONMENTAL REVIEW REQUIRED {

(Adverse environmental impact) YES ( ) NO[U[ i D. SPECIFIC SAFETY EVALUATION REQUIRED Affects response of safety systems, performance of systems which may have bee' credited in the safety analysis or non-credited systems whir.h may indirectly affect safety system response. YES ( ) NO ( b],

(If yes, perform written Safety Evaluation and contact Manager, Safety Analysis Branch to determine  :

need for Integrated Safety Evaluation.)

E. INTEGRATED SAFETY EVALUATION REQUIRED YES ( ) NO ((

F. PROCEDURE REQUIRES dC/SORC REVIEW (In addition to review, items,with a YES response must be documented in the ROEC'/SORC meeting minutes.) YES [ 4 NO ( )

G. m')SORC APPROVAL SORC Meeting Number f/ (/I/IT y - j 7 .' '.'8 J-88-/C7 i H. APPROVAL AND IMPLEMENTATION The attached ^ ^ ye i s b by approved, and effective on the date below; i J$ / sr Station 75ervice/tInit Superintendent 6 W-[]

Effective Date SF 301 Rev. 9 8810260410 081007 PDR P ADOCK 05000213 pg ,

f

E0P 35 EL., 0.2 Page 1 Rev. 2 O

LOSS OF ALL AC POWER RECOVERY WIT:? $1 REQUIRE 0 Page No. Eff. Rev.

1-7 2 Table 1 2 Table 2 2 O

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- LOSS OF ALL AC PokIR RECOVERY WITH SI E0P 35 ECA D.2 Page 2 Rdv. 2 {

REQUIRED s

, f A. PURPOSE This procedure provides actions to use engineered safeguards systems  ;

to recover plant conditions following restoration of ac emergency i power. j i

B. ENTRY CONDITIONS  ;

. i This procedure was written for Modes 1, 2, 3, and 4 assuming th*e RCS  !

is hot and pressurized. Using this procedure when not in these modes i requires a step by step evaluation to determine if the required j action is att11 applicable to current plant conditions. [

This procedure is entered from j

1) E0P 35 ECA-0.0, LOSS Of ALL AC POWER, Step 25, when ac emergency -

. Power is restored and SI is required.  !

i

2) E0P 35 ECA-0.1, LOSS OF ALL AC POWER RECOVERY WITH0 LIT SI l REQUIRED, Steps 5 and 19, if SI is required. [

O O

s

. LOSS Or ALL AC POWER RECOVERY WITH SI E0P 35 ECA-0.2 Page 3 REQUIRED Rev. 2 gs [

\

-- STEP ACTKH4-EXPECTED RESPON83 RESPONSE NOT COTAINED ,

NOTE CSF status trees should be monitored for information only. Other Functional Response Procedures should not beimpfementedpriortocompletionofStep7.

1 Check RWST Level > 520,000 gal Establish cold les recirculation

a. Manually align valves to /

establish cold leg recirculation alignment per Table 1 .

b. Go to Step 3.

2 Manually Align Valves To Establish SI Injection Alignment per Table 2 l

3 Check RCP Thermal Barrier RFCCW Isolation Status j a. All RPCCW thermat a. Manually isolate RPCCV to i barrier return valves - RCP thermal barriers CLOSED 1. CLOSE RPCCW thermal barrier valves.

9R

2. CLOSE RDCCW return isolation valves outside containment.

4 Check if Containment Rectre Pumps should be started

4. ECCS valves - ALIGNED a. .!F ECCS valves lined up TOR COLD LEG for 51 injection, THF_N RECIRCULATION Go To Step 4.d.

b. START Containment keetre pumps lined up tor cold leg rectreulatton

c. Go to Step 5

d. IF RCS pressure < 390 psia d. Go to Step 5 THEN start RHR pwtps O

co:ua 3 e4

. Lvs5 Of ALL AC FUVLk hECuVERY Willi SI E0P 35 ECA-0.2 Page 4 REQUIRED Rev. 2 O

(

- STEP ACTION IXPECTED RESPONSE RESPONS8 NOT CSTAINED CAUTION The loads placed on the energized ac emergency bus should not exceed the capacity of the power source.

NOTE If both emergency buses are available, try to equalize loads on both bu'ses.

5 Manually Load Following Safeguards Equipment On AC Emergency Bus

a. RPCCW punip

b. SI oump l c. PZR heaters

d. Available containment air recirculation fans

c. CRDM Cooling Fan

f. Auxiliary Building Filter Exhaust fans

g. Control 'Juilding liVAC C'.t l l e r

h. One Int t rument Rack room /

Computer room A/C Unit

i. Fuel Building Initer Exhaust Fans J. Fuel pool cooling pump c n:*s - < s s<

__________________-_____________)

, Luds uk ALL AG NhEN RECOVERY WITH SI E0P 35 ECA-0.2 Page 5 REQUIRED Rev. 2 r 'h h)

STEP ACTION EXPECTED RESPONSE RESPONSE ACT OSTAINED 6 Check If Charging Pump Should Be Started

a. Check charging pumps - ALL a. Go to Step 7.

STOPPED

b. Check RCP seal supply b. IF valves open or isolation valves outside porition not known, containment - CLOSED THEN manually close valves.

IF valves can NOT be  ;

manually closed. THEN loca11* close valves.

Continue with Step 7.

kHEN valves closed, THEN do Step 6c.

c. START charging pump a

C PS N S- 1 1 44

e i ,

LV3d V: ALL AL (V~= L X KtLuiLM1 WIAH 51 EOF 33 ECA-0.2 Page 5 s REQUIRED Rev. 2 a

-- sTip ACTl0N EXPECTRO milPCNSE RESPON$t NOT OSTAH to .I

~

CAUTION i

1. ATV pump suction should be shif ted to the CST if DWST level decreases to < 80,000 gal. l

2. If SG narrow range level decreases to l

< 4% (34% for adverse containment) and AFV flow is < 525 gpm, the HD ATV pumps should be manuallv loaded on se emergency bus to supply water to the SGs.

NOTE If MD ATV pump operation is not required,  !

pump switches should be main',ained in PULL-TO-LOCK '

to prevent automatic start. i i

,_ _7 Check Intact Sd Levels

a. Narrow range level a. Maintain ATV flow  ;

O > 41 (34% FOR ADVERSE CONTAI NMI.NT)

525 gym until narrow range level is

> 4% (34% FOR ADVERSE I CONTAINMENT) in at least l one SG. E i

IF ATW flow NOT > 525 spm,  !

THEN Check KD ATV flow i piih valves - OPEN. [

l START MD AFV pur, a a s [

necessary.

I

b. Control AFV flow to l maintain narrow range [

level between 4% l (34% FOR ADVERSE i CONTA!KMENT) and 50%

i t

l r

owed - t 3 44

e

. LO55 OF ALL AC POWER RECOVERY WlIH SI EOP 35 ECA.O.2 Page 7 REQUIRED Rev. 2 0 -- STEP ACTICHt t1PECTED RESPG.488 RESPONlt NOT OOTAINED NOTE Other Functional Response Procedures may now be implemented as necessary.

8 Place Containment Spray Pump Switches in AUTO

a. Quench spray ptops

b. Containment recirculation spray pumps CAUTION

?. RCP thermal barrier cooling should be established slowly to minimize potential introdvetion of steam into the RPCCW system. RCP thermal barrier cooling should not be established to an RCP with excessive seal leakage.

2. RCP seal injection should be established slowly (bearing temperature change approximately l'F/ min) to minimize RCP thermal stresses and potential seal failures.

3. As part of subsequent recovery actions, RCPs should not be started prior to a status evaluaticA.

9 Establish RCP Seal Cooling

a. OPEN Train A and B RFCCV containment re'. urn outer isolation valves,

b. Check CLOSED Charging Header to seals

c. OPEN seal supply isolation valves

d. Throttle OPEN Charging H ader to seals 10 Go To EOP 35 E-1. LOS! 0F RIACTOR OR SECONDARY COOLANT Step 1 s, -FINAL-C #1N4 1 3 64

..~-

9

+- LOSS OF ALL AC POWER RECOVERY WITH SI E0P 35 ECA-0.2 Page 1 ^

REQUIRED Rev. 2 l' O i l

1 TABLES &

I Table 1 - Cold Leg Recirculation ECCS Valve Lineup Table 2 - Charging Pump ECCS Flow Valve Lineup 4

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LOSS OF ALL AC POWER REcoiERY WITH SI EOP 35 ECA-0.2 Page 1 of 1 REQUIRED Rev. 2

+,J TABLE 1 COLD LEG RECIRCULATION ECCS VALVE LINEUP VALVE FUNCTION POSITION TRAIN A 3SIL*MV8812A RWST/RHR Pump A Suction Isol CLOSED 3R11S*MV8716A RIIR Pump A Hot Leg Injection CLOSED 3RSS*MV20A Recire Pump A Spray Header Isol CLOSED 3RSS*MV8837A Recirc Pump A RIIR Isol OPEN 3SIlf*MV8814 SI Pump A Miniflow Isol CLOSED 3SIH*MV8920 SI Pump B Miniflow Isol CLOSED 3SIL*MV8804A RHR to Charg Pump Suction OPEN 3SWP*MV50A SWP Supply RPCCW Train A CLOSED 35WP*MV54A Rectre Spray HX A Inlet OPEN 3SIH*MV8807A SI/CHG Pumps Suction Xconn OPEN 3CHS*LCV112D RWST to Charging Pump Suetion CLOSED 3SIL*MV8809A RHR Pump A Cold Leg Injection CLOSED TRAIN B 3SIL*MV8812B RWST/RIIR Pump B Suction Isol CLOSED 3RHS*MV8716B RIIR Pump B Hot Leg Injection CLOSED 3RSS*MV20B Recire Spray Pump B Spray Header Isol CLOSED 3RSS*MV8837B Recire Spray Pump B RIIR Isol OPEN 3SIH*MV8813 SI Pumps Master Miniflow Isol CLOSED 3SIL*MV8804B RJIR to SI Pump Suction OPEN 3SWP*MV50B SWP Supply RPCCW Train B CLOSED 3SWP*MV54B Recire Spray HX B Inlet OPEN 3SIH*MV8807B SI/CHG Pumps Suction Xconn OPEN 3CHS*LCV112E RWST to Cha rging Pump Suction CLOSED 3SIH*MV8806 RWST/SI Suction CLOSED 3SIL*MV8809B RHR Pump B Cold Leg Injection CLOSED O

LOSS OF ALL AC POWER RECOVERY WITH SI E0P 35 ECA-0.2 Page 1 of 2 REQUIRED Rev. 2 TABLE 2 CHARGING' PUMP ECCS FLOW VALVE LIhTUP VALVE FUNCTION POSITION .

TRAIN A 3CHS*LCV112D RWST to Charging Suction OPEN 3CHS*LCV112B VCT To Charging Isolation CLOSED -

3CHS*MV8468A RHR to Charging Suction Isol OPEN 3CHS*MV8438A Charging Header Isol OPEN 3CHS*MV8438C Charging Header X-Tie OPEN 3SIH*MV8801A Charging Cold Legs Injection OPEN 3CHS*MV8105 Charging Header Isolation CLOSED TRAIN B 3CHS*LCV112E RWST to Charging Suction OPEN 3CHS*LCV112C VCT To Charging Isolation CLOSED 3CHS*MV8468B RHR to Charging Suction Isol OPEN 3CF~*MV8438B Charging Header Isol OPEN 3SIH*MV8801B Charging Cold Legs Injection OPEN 3CHS*MV8106 Charging Header Isol CLOSED SI PUMP ECCS FLOW VALVE LISTUP ,

VALVE FUNCTION POSITION TRAIN A 3SIH*MV8923A SI Pump A Suction Isol OPEN 3SIH*MV8814 SI Pump A Miniflow Isol OPEN 3SIH*MV8920 SI Pump B Miniflow Isol OPEN 3SIH*MV8821A SI Pump A Cold Leg Injection OPEN 3SIH*MV8802A SI Pump A Hot Leg Injection CLOSED 3SIH*MV8835 SI Cold Leg Injection OPEN TRAIN B 3SIH*MV8806 RWST/SI Suction OPEN 33IH*MV8923B SI Pump B Suction Isol OPEN 3SIH*MV8813 SI Pumps Master Mintflow Isol OPEN 3SIH*MV8821B SI Pump B to Cold Leg Injection OPEN 3SIH*MV8802B SI Pump B to Hot Leg Injection CLOSED O

OPSoe4 2 344

t 4

LOSS OF ALL AC POWER RECOVERY WITH SI E0P 35 ECA-0.2 Page 2 of 2 REQUIRED Rev. 2

..s b

TABLE 2 (cont)

RiiR PUMP ECCS FLOW VALVE LINEUP VALVE FUNCTION POSI' TION TRAIN A 3RHS*MV8701C RHR Loop A RCS Suction Isol CLOSED 3RHS*MV8701A RHR Loop A Isol (Inner) CLOSED 3SIL*MV8812A RWST/RHR Pump A Suction Isol OPEN 3RHS*MV8702A RiiR Loop B Isol (Outer) CLOSED 3RHS*hV8716A RHR Pump A Hot Leg Injection OPEN 3SIL*MV8809A RHR Pump A Cold Leg Injection OPEN 3SIL*MV8804A RHR to Charg Pump Suction CLOSED 3SIH*MV8924 SI/CHG Isolation OPEN 3 Sill *MV8807A SI/CHG Pumps Xconn CLOSED TRAIN B 3RHS*MV8701B RHR Loop A Isol (Outer) CLOSED 3SIL*MV8812B RWST/RHR Pump B Suction Isol OPEN 3RHS*MV8702B RiiR Loop B Isol (Inner) CLOSED p 3RHS*MV8702C RHR Loop B RCS Suction Isol CLOSED 3RHS*MV8716B RHR Pump B Hot Leg Injection CPEN 3SIL*MV8840 RHR fot Leg Injection CLOSED 3SIL*MV8809B RHR Pu,mp B Cold Leg Injection OPEN 3SIL*MV8804B RHR to SI Pump Suction CLOSED 3 Sill *MV8807B SI/ClfG Pump Suction Xconn CLOSED O

OF 5068-2 3-44