ML20207M706

Surge Line Stratification Presentation Overheads - 880907 Texas Util Electric/Nrc Meeting

ML20207M706
Person / Time
Site:	Comanche Peak
Issue date:	09/30/1988
From:	Antaki G WESTINGHOUSE ELECTRIC COMPANY, DIV OF CBS CORP.
To:
Shared Package
ML19297H109	List: ML20207M687 ML20207M706 TXX-8872, Forwards Proprietary WCAP-11987 & Nonproprietary WCAP-11988, Surge Line Stratificaton Presentation Overheads - 880907 Texas Util Electric/Nrc Meeting. Proprietary Version Withheld (Ref 10CFR2.790)
References
WCAP-11988, NUDOCS 8810180343
Download: ML20207M706 (48)

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Surge Line Stratification Presentation Overheads - [

9/7/88 TU Electric /NRC Meeting  ;

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Prepared by: G. A. Antaki, Manager I Systems Structural Analysis and Development 4

l September 1988 i i

i WESTINGHOUSE ELECTRIC CORPORATION '

Power Systems Division P. O. Box 355 i Pittsburgh, Pennsylvania 15230 i l  !

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Introduction At the request of the NRC, a TU Electric /NRC meeting was held on September 7,1988, to discuss pressurizer surge line stratification as it relates to tie application of I leak before break methodology to the pressurizer surge line on i Comanche Peak. This document contains the overheads used  ;

during the closed portion of that meeting.

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i TU ELECTRIC l COMANCHE PEAK STEAM ELECTRIC STATION ,

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I PRESSURIZER SURGE LINE STRATIFIC ATION l i

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l PRESENTATION TO THE i NUCLEAR REGULATORY COMMISSION  !

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PRES 5URIZER $ URGE LINE STRATIFICATION AGENDA SEPTEMBER 7, 1988 9 10:00 A.M.

I. INTRODUCTION AIS AGENDA R. MALKER (TU ELECTRIC)

2. BACKGROUIS J. MurFETT (TU ELECTRIC 3 G. ANTAKI (W)

3. K5CRIPTION A. SYSTEMS OPERATION R. CARLSON (W)

3. STRATIFICATION IN PRES 5URIZER D. ROARTY (W)

SURGE LINE C. UTILITY EXPERIElICE

4. ENGilIEERIIIG EVALWATIGIt (CPSES SPECIFICI A. MOIIITORIIIG PROGRAN R. FI. ORES (TU ELECTRIC)

D. ROARTY (W)

D, RENCHER (IU ELECTRIC)

R. MFINITICII 0F TRAltSIENTS D. ROARTY (W)

C. HEAT TRAlt5FE3 D. ROARTY (W)

D. PIFIIIG GLOBAL EFFECIS G. AellAKI (W)

E. PIPIIIG LOCAL EFTECTS D. ROARTY (W)

F. FIPIIIG SYSTEM Alue COMPONENT G. ANTAKI (W) 00ALIFICATICII

5. LEAK-Stf 0RE-BREAK (CP5ES SrtCtrICI 5. 5WAMr (W)

6. SIN #0ARY J. Misfrfii (Til [LECTRICI

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1) To obtain temperature profiles (including stratification) in surge line during operation

2) To obtain piping displacement during operation

3) To obtain system information to correlate to surge line readings

• Temperature monitoring

-RTD's used to obtain outside wall temperature

-Locations selected to develop profile for entire pipe

- At each location, circumferential temperature distribution obtained by several RTD's at various angles

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PRESSURIZER SURGE LINE STRATIFICATION THERMAL STRIPING e Thermal Striping - Description Wave motion at the boundary between the hot and cold fluid during stratification 1

1 Wave motion create 1; oscillating surface temperature variation at the inside I pipe wall l e Previous Experiences LMFBR Research Work PWR Feedwater Line Stratification l

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RATIONALE FOR L8B IN THE PRESENCE OF STRATIFICATION

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j e klentify Upperbound Stratification Loads Based on Available Data l 4 1

! e Demonstrate Piping Integrity (Same Margin Criteria) [

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, of Years

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