ML19339C814

Slide Presentation Entitled Limerick Generating Station Preliminary Risk Assessment.

ML19339C814
Person / Time
Site:	Limerick
Issue date:	10/02/1980
From:	GENERAL ELECTRIC CO.
To:
Shared Package
ML19339C812	List: ML19339C811 ML19339C814
References
NUDOCS 8011190532
Download: ML19339C814 (20)

Text

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p; AGENDA ITEMS OCTOBER 2, 1980 e INTRODUCTION (P.E. CO.)

e ANALYSIS APPROACH (GE/SAI)

CASES CONSIDERED GROUND RULES METHODOLOGY SUCCESS CRITERIA e STATUS (GE) e SCHEDULE (P.E. CO.)

8011190 pg -

p- e-LIMERICK GENERATING STATION PRELIMINARY RISK ASSESSMENT e MAY 8, 1980 LETTER REQUESTED ASSESSMENT OF PLANT / SITE COMBINATION e MAY 21, 1980 MEETING DISCUSSED APPROACH - EXTERNAL EVENTS NOT TO BE INCLUDED e JULY 11, 1980 MEETING CLARIFIED THE STUDY APPROACH e

LJ _

tJ 2, LGS 'PRA PARTICIPANTS l

e PHILADELPHIA ELECTRIC CO. .

- e GENERAL ELECTRIC CO.

I

, SCIENCE APPLICATIONS INC.

j e MUS CORPORATION e BECHTEL POWER CORPORATION ,

e CHICAGO BRIDGE & IRON CO.

e FAUSKE & ASSOCIATES, INC.

e METEOROLOGICAL EVALUATION SERVICES, INC.

e CENTER FOR PLANNING RESEARCH 1

4

/

. , ,, . - , . , - + - - - , ,,m - - __

i LIMERICK PRA PROGRAM STATUS .

2 I

i TASK I

PROBABILITY OF

RADIOACTIVE RELEASES

< 90% COMPLETE' TASK Ill

& CONSEQUENCES OF i

RADIOACTIVE

" RELEASES l

40% COMPLETE TASK II i

MAGNITUDE OF RADIOACTIVE ,

RELEASES j f

90% COMPLETE RJM-15  !

10/02/80

if LIMERICK PRA CASES STUDIED e WASil 1400 AT LIMERICK SITE e LIMERICK PLANT AT LIMERICK SITE RJM-1 10/02/80

l LIMERICK PRA l WASH 1400 PLANT AT LIMERICK SITE e WASH 1400 PROBABILITIES e WASH 1400 RELEASE FRACTIONS e LIMERICK SITE POPULATION e LIMERICK SITE METEOROLOGY

, WASH 1400 CRAC l

RJM-2 l 10/02/80 l

l ,

<t 7 LIMERICK PRA

, LIMERICK PLANT AT LIMERICK SITE 9 f1ETHODOLOGY USED 4 C0f1DIT10NS & GROUT 4D RULES S SUCCESS CRITERIA RJM-3 10/02/80

' i ts LIMERICK PRA l SIGNIFICAN1 INPUTS & GROUNDRULES 9 LIMERICK CONFIGURATION AS DESIGNED - BWR/4, MK II t, e LIMERICK POPULATION TO 500 MILES l

9 " REALISTIC" OUANTIFICATION - BEST AVAILABLE DATA - ALL ,

APPLICABLE SYSTEMS ,

e " SUCCESSFUL" TERMINATION - HOT SHUTDOWN, STABLE CONDITIONS 8 PEACH BOTTOM TECHNICAL SPECIFICATIONS e TMI EMERGENCY OPERATOR GUIDELINES i 9 OPERATOR ERRORS OF OMISSION EVALUATED e ERRORS OF COMMISSION NOT EVALUATED 0 NO FIRE, FLOOD, EARTHQUAKE, SABOTAGE e LOSS OF OFFSITE POWER PROBABILITY FOR LIMcRICK GRID I

Ok NO LIQUID PATHWAYS S ATWS ALTERNATE 3A 4

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g. q LIMERICK PRA TASK I PROBABILITY OF RELEASE .

8 FAULT TREES e EVENT TREES e WAM COM? UTER CODES RJM-4 10/02/80 1

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LIMERICK PRA -

SYSTEM LEVEL FAULT TREES I

i e CRD INJECTION O FEEDWATER

. O CONDENSATE e AUTOMATIC DEPRESSURIZ/JION SYSTEM (ADS) '

, e RESIDUAL HEAT REMOVAL (RHR)

- LOW PRESSURE CORE INJECTION (LPCI)

- CONTAINMENT SPRAY

_ RHR SERVICE WATER 9 HIGH PRESSURE COOLANT INJECTION (HPCI) e REACTOR CORE ISOLATION COOLING (RCIC) e LOW PRESSURE CORE SPRAY (LPCS) 9 EMERGENCY SERVICE WATER

9 AC POWER 8 DIESELS ,

9 STANDBY LIQUID CONTROL (SLC)

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$ll LIMERICK PRA INITIATING EVENTS USED IN THE ANALYSIS .

I TRANSIENTS INADVERTENT MSIV CLOSURE & LOSS OF FW TURBINE TRIP WITH BYPASS (25%) (TT)

LOSS OF 0FFSITE POWER (LOOP)

INADVERTENT OPEN RELIEF VALVE (10RV)

- LOCAs A LARGE (>l.0 FT2)

S1 MEDIUM (0.004-1.0 FT2 )

S2 SMALL (<0,004 FT2) 4 ATWS MSiv TT 10RV 1

LOOP I

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LIMERICK PRA (DRAFT) .

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• Mot core melt sequence "ATwS intstators are treated in a separate event tree - - - -

• Trassfer to large LCCA event tree _ *

" Transfer to bridge tree 10/02/80 G

kk,LIMERICKPRA f

TASK II MAGlilTUDE OF RELEASE BOIL _ _ _ , _ ,

I CORE UtlCOVERY 8 AtlD 11ELTDOWN 3

MASS pvt 1ELT l

' CONTEMPT D - --4 HEAT TRAllSFER AND = PRESSURE YESSEL I ATMOSPHERE EXCilANGE Ef1ERGY f1ELTTilROUGH FLOWS CORE-CONCRETE  :

INTERACTION I CONTAINMEl1T CONDIT10NS I I

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• 1 "

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~~ L TIMING RETENTION ATMOSPHERIC SOURCE TERT 1 i

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e LOCATION OF YlELD (BECHTEL) f 4

e DOME & HATCHES (CHICAGO BRIDGE & IRON) l 0 FAILURE MODES & PROBABILITIES (GE/SAI) t k

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LIMERICK PRA 1

t l FOURACCIDENTSEQUENCECLASSES

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(CORE RELEASE)

CLASS I - RELATIVELY RAPID CORE MELT WITH INTACT CONTAINMENT i

i TRANSIENTS & SMALL LOCA EVENTS WITH LOSS OF INVENTORY

MAKEUP CLASS II - RELATIVELY SLOW CORE MELT WITH FAILED CONTAINMENT TRANSIENTS & LOCA EVENTS WITH LOSS OF cPNTAINMENT HEAT REMOVAL CLASS 111 - RELATIVELY RAPID CORE MELT FOLLOWED BY CONTAINMENT FAILURE TRANSIENTS WITHOUT SCRAM WITH CORE MELT BEFORE CONTAINMENT FAILURE

. CLASS IV - RAPID CORE MELT WITH FAILED CONTAINMENT TRANSIENTS WITHOUT SCRAM WITH CONTAINMENT FAILURE BEFORE CORE MELT l

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IFI'

. LIMERICK PRA SUCCESS CRITERIA I

1. TRAf1SIEf1TS (WITH SCRAM) r SUCCESSFUL RECOVERY FROM INITIATING TRANSIENTS (WITH f, SCRAM) REQUIRES:

i S RCIC k e llPCI l OR l 1

i 0 3 FW PUMPS l OR l 1 0F(WITH MSIV S OPEN) #

4 0 2 LPCS LOOPS l OR l 1 0F(W1TH 2 SRV'S OPEN) 4 0 4 LP$1 PUMPS OR --

j i 1 0F(WITil 4 SRV' S OPEN) t, 8 1 CONDENSATE PUMP l OR l

}l (WITH 1 SRV OPEN) i FOR ADEQUATE VESSEL INVENTORY MAKEUPJ l4 '

'l lAND]

J e CONDENSER l OR l 1 Malt)WITH

( MSIV'S OPEN) i 0 1 0F 2 RHR'S l FOR ADEQUATE LONG-TERM HEAT REMOVAL.

NOTE: 10RV REQUIRES A LOW PRESSURE INJECTION SYSTEM i WITHIN' 1 AND l-1/2 HOURS.

RJM-14 '.

10/02/80 J

4 4

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5 14

%_ . , d 'l LIMERICK PRA i PROGRAM STATUS i

a i

4 TASK I i

PROBABILITY OF RADIOACTIVE

RELEASES 90% COMPLETE TASK III r CONSEQUENCES OF RADIDACTIVE

• RELEASES 40% COMPLETE TASK 11 I MAGNITUDE OF RADI0 ACTIVE RELEASES  ;

90% COMPLETE 4

t RJM-15 10/02/80 i

s 4

, ., a.--- , . . , . , ,_

MEETING

SUMMARY

DISTRIBUTION Docket File D. Muller T. Greene NRC PDR R. Ballard S. Treby, OELD

. Local PDR W. Regan C. Woodhead, OELD i NSIC D. Ross C. Kelber, RES i TIC P. Check L. Rib, RES  !

l TERA R. Satterfield F. Combs, OCA fiRR Reading 0. Parr Hughes, SAI LB #2 File F. Rosa W. Baldewicz, ACRS H. Denton W. Butler D. Johnson E. Case W. Kreger

! D. Eisenhut R. Houston

' R. Purple T. Murphy B. J. Youngblood L. Rubenstein A. Schwencer T. Speis F. Miraglia W. Johnston J. Miller J. Stolz G. Lainas S. Hanauer R. Vollmer W. Gamill J. P. Knight F. Schroeder R. Bosnak D. Skovholt F. Schauer M. Ernst i R. E. Jackson R. Baer l Project? tanager ,

C. Berlinger Licensing Assistant MService K. Kriel

) Attorney, OELD G. Kn.ighton ,

I&E (3) A. Thaaani I ACRS (16) D. Tondi

, R. Tedesco D. Vassallo

! G. Lear J. Kramer V. Noonan ,

P. Collins i S. Pawlicki D. Ziemann S. Israel V. Benaroya Z. Rosztoczy L. Soffer W. Haass S. Acharya NRC

Participants:

Others:

Boyer, PECo Logue, PECo_McCandless, GE Levine, NUS I

BCC: Applicant & Service List

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