ML20205A274

Rev 1 to Emergency Operating Procedure EOP 576, Reactor Pressure Vessel Level Restoration Emergency Procedure

ML20205A274
Person / Time
Site:	Millstone, Haddam Neck, 05000000
Issue date:	06/03/1988
From:	CONNECTICUT YANKEE ATOMIC POWER CO.
To:
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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-576, NUDOCS 8810250446
Download: ML20205A274 (9)

Text

-

r E.J. Hroczka 8-25-03 -

corm $cproved by Station Suoerintendent Effective Date t

)

STATION PROCEOURE COVER CHEET A. IDENTIFICATION Number E0P 576 Rev. 1 Title RPV LEVEL RESTORAf!0N EMERGENCY PROCEDURE Prepared By W. R. McCollum ,

B. REVIEW I have reviewed the above procedure and have found it to be satisfactory.

TITLE $1GNATURE DATE DEPARTMENT HEAD -[ . 2/02/37 h*W h/W YW Z)h1fff C.o. jfRAA dolm C. UNREVIEVE0 SAFETY QUESTION EVALUATION DOCUMENTATION REQUIRED:

3 (Significant change in procedure method or scope as described in FSAR) YES[2 NO [ ] ]I (If yes, document in DORC/50RC meeting minutes)

ENVIRONMENTAL IMPACT (Adverse environmental impact) YES [ ] NO [d (If yes, docurcent in PORC/50RC meeting minutes)

D. PROCEDURE REQUIRFS PORC/$0RC REVIEW YES ['f NO [ ]

E. PORC/SORC APPROVAL PORC/SORC Heeting Number /"8['((

F. APPROVAL AND IMPLEMENTATION The atI. ached procedure is hereby approved, and effective on the date below:

NA 7.~ G sh J ,2o -fj*

Station /ServiceWnit Superintendent Effective Date SF-301 Rev. 6 0010250446 001007 13 DR ADGCK 050

s RPV L3 vel Restoration E0P 576 Page 1 Rev. 1

,~., Unit I l' v')

RPV Level Restorhtion Emergency Procedure PAGE NO. EFF. REV.

1-6 1 STEP 5 06JECTIVE5 Enter from CQP

$70 if RPV water level cannot be maintained

> TAF or E0P 577 Upon Deoressurtration b

l Initiate'IC l Release cold leg watar inventory b

t taonsn Injection Lineup Prepare for level restoration d

Monitor RPV tevel/ Pressure Diagnose plant conditions u

late Action Based Upon Parameter Trends and Systee Availability

• GO TC E0P 570 "RPV Level Control"

GO TO E0P 573 "RP" spray Cooling"

Go 70 E0P $74 'RPV Steam Cooling"

References:

1) Emergency Procedure Guidelines, Millstone Unit One

2) Emergency Procedure Guidelines, Appendix 8 ,

3) Emergency Procedure Guidelines, Appendix C

4) ACP-QA-3.02, Attachment A ECP 576 RPV Level Restoration

i' I

RPV Level Restoration E0P 576 Page 2 Rev. 1

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1. PURPOSE

(%v)  ;

The purpose of this procedure is to restore RPV water level to above i top of active fuel.

l l

2. ENTRY CONDITIONS 2.1 This procedure is entered from E0P 570 "RPV Level Control" step 3.2 when RPV water level cannot be maintained above the top of the active fuel (TAF = -127),. or E0P 577 upon depressurization. l

3. OPERATOR ACTIONS While executing the following steps:  !

E Boron injection is required.

THEN GO TO E0P 575 "RPV Level /Rx Pcwer Control" E RPV water level cannot be determined, RPV Flooding is required, THEN GO TO E0P 578 "RPV Floodir.g".

E RPV Flooding is required for other reasons, LHM GO TO E0P 578 "RPV Flooding".

3.1 Initiate Isolation Candenser 3.2 Line-up for injection and start pumps in two or more of the following normal injection subsystems:

3.2.1 Condensate /Feedwater 3.2.2 LPCI A 3.2.3 LPCI B 3.2.4 Core Spray A 3.2.5 Core Spray B E0P 576 RPV Level Restoration

RPV Level Restoration E0P 576 Page 2a

- Rev. 1 .

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1. C04171045 REQUIRING RPV Floo0!NC A. RPY Level control (EOP $70)

1. RPY water level cannot be deteraleed.

B. Centatteent Control (E0P 540)

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1. Drywell temperature reaches the RPY Saturation Te'perature.

e

2. Suppression Chamber pressure cannot be saintained below the Primary Containment Design Pressure.

C. RPV Level Restoration (EOP $76)

1. RPV water ieval cannot be determined.

4

0. RPV Level /h Power (EOP 575)

1. RPV water level cannot be determined, and h Power cannot be determined or maintained above 85.

II. 8090N INJECT!04 IEQUIREMENTS 6

A. h Power Control (EOP 572)

1. If the h is not shut down and Suppression Pool Temperature reaches 110*F.

l E0P 576 RPV Level Restoration

RPV Level Restoration E0P 576 Page 3

. Rev. 1 O

sj NOTE Completion of step 3.3 is not necessary for execution of step i 3.4. i 1

3.3 E at least two normal injection subsystems (step 3.2) can not be lined up, line-up as many of the following alternate injection subsystems as possible, BUT 00 NOT INJECT 3.3.1 SLC Test Tank OP 304".

3.3.2 M/U Water to SLC System "0P 304".

3.3.3 Boron Tank to SLC System "0P 304".

3.3.4 CRD Pump Test Line "0P 302".

3.3.5 CST to LPCl/CS "0P 335".

3.3.6 Fire System "0P 332A".

3.3.7 ESW to ECCS X-Tie "00 335" 3.4 Monitor RPV pressure and water level. Continue in this procedure at the step indicated in the following table.

RPV Pressure Region High* (> 33n psig) LO(< 330 psig)

$ '$ RISING ~

3.5 3.6

?%*

m :n 3 LOWERING 3.7 3.8 l

• RPV pressure at which Core Spray Pump shut-off-head is reached.

EOF 576 RPV t.evel Restoration

l RPJ Level Restoration E0P 576 Page 4 Rev. 1 b')' While executing the following steps:

E the RPV water level trend reverses or RPV pressure changes region, THEN GO T0 step 3.4 of this procedure.

E RPV water level drops to -48" THEN prevent automatic RPV depressurization by depressing the APR Timer Reset pushbutton and CONTINUE to reset every minute UNTIL,

• RPV water level is o -48", @

Drywell pressure is < 2 psig and the "High Drywell Pressure Reset" key is in the resat position, OR All Core Spray and LPCI pumps are not running, AND the "APR Auto-Blowdown A/C Interlock" alarm is clear.

3.5 RPV level rising end RPV pressure > 330 psig.

3.5.1 IF RPV water level is > -127" THEN GO TO E0P 570 "RPV Level Control", step 3.3. l 3.5.2 IF RPV water level is < -127" AND Undensate/Feedwater is available, THEN GO TO E0P 570 "RPV Level Control", step 3.3. l 3.5.3 IF RPV water level is < -127" AND E ndensate/Feedwater is not available, THEN GO TO E0P 577 "Emergency RPV Depressurization".

3. 6 RPV level rising and RPV pressure < 330 psig.

3.6.1 E RPV pressure is rising, THEN GO TO E0P 577 "Emergency RPV Depressurization" 3.6.2 E RPV pressure is M rising, WHEN RPV water level reaches -127" THEN GO TO E0P 570 "RPV Level Control", step 3.3.

E0P 576 RPV Level aestoration

RPV Level Restoration E0P 576 Page 4a Rev.1 ,

ICC5 AUTO-lm!TIATION ) i I

j APR - Drywell Hi Pressure (2 psig) M RPV Low Low Water Level ( 44") M AC !.'.terlock (1 C5 or 1 LPCI) M 120 Sec finer (Timed out)

Core Spray

• Orywell Hi Pressure (2 pelg) M

• RPV Low-Low we'.or Level ,(+44") WITH 68 APV Pressure '.aw (00-350 psig) $

I LPCI

• Drywell Hi Pressure (2 psig) M a RPV Low-Low Water Level (-44") WITH RPV Pressure Low (300-350 psil)

)

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E0P $76 RPV l.evel Restoration

r>

RPV Level Restoration E0P 576 Page 5 Rev. 1 -

(D 3.7 RPV level lowering and RPV pressure > 330 psig.

V 3.7.1 H, Condensate /Feedwater is not operating, THEN attempt to start Condensate /Feedwater.

3.7.2 LF, CRD is not operating, THEN attempt to start CRD 3.7.3 E CRD is not operating, AND IF at least two normal injection subsystems are IIned-up for injection with pumps running, THEN GO TO E0P 577 "Emergency RPV Depressurization" 3.7.4 E CR0 is rot operating, AND IF no normal injection subsystem.is lined-up Tor injection with at least one pump running, THEN start pumps in the alternate injection subsystems which are lined-up for injection (step 3.3 of this procedure).

~

NOTE For Hydrogen / oxygen control following a LOCA, refer to section 7.6 of OP 311.

3.7.5 WHEN RPV level approaches -127" (TAF),

E any system, or normal injection subsystem, or a? ternate injection subsystem is lined-up with at least one pump running.

THEN GO TO E0P 577 "Emergency RPV Depressurization".

IF no system, or normal injection su'> system, or aTternate injection subsystem is liaed-up with at least one pump running, THEN GO TO E0P 574 "RPV Steam Cooling".

E0P 576 RPV Level Restoration

RPV Level Restoration E0P 576 Page 6

• Rev. 1 0 3.8 RPV water level lowering and RPV pressure < 330 psig.  ;

3.8.1 IF no normal injection system is lined-up for injection Eth at least one pump running, THEN start pumps in the alternate injection subsystems which are lined-up for injection (step 3.3 of this procedure).

3.8.2 g RPV pressure is rising, THEN GO TO E0P 577 "Eu egency RPV Depressurizatior".

WHEN RPV water level drops to -127" (TAF),

THEN GO TO E0P 573 "RPV Spray Coeling".

WRM: dip O

FINAL 0

"CP ~;75 iPV *.evel iustoration

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