ML20153F043
| ML20153F043 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 08/31/1988 |
| From: | Joshua Wilson NRC OFFICE OF SPECIAL PROJECTS |
| To: | NRC OFFICE OF SPECIAL PROJECTS |
| References | |
| NUDOCS 8809070100 | |
| Download: ML20153F043 (29) | |
Text
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August 31, 1988 TU Electric - Sumary of Heeting on 8/18/88,
It was agreed that a follow-up meeting would be scheduled to occur in the next few weeks.
(original signed by)
James H. Wilson, Assistant Director for Projects Comanche Peak Project Division Office of Special Projects
Enclosures:
1.
Meeting Notice 2.
Agenda l
3.
List of Attendees 4.
Presentation Slides cc: See next page l
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NUCLEAR REGULATORY COMMISSION W ASHINGTON, D. C. 20664 t,,.....)
August 31, 1988 Docket Nos. 50-445 and 50-446 APPLICANT:
Texas Utilities Electric Company (TV Electric)
FACILITY:
Comanche Peak Steam Electric Station (CPSES), Units 1 and 2
SUBJECT:
SUMMARY
OF MEETING ON AUGUST 18, 1988 - APPLICATION OF 1
LEAK-8EFORE-BREAK (LBB) METHODOLOGY TO THE PRESSURIZER SURGE LINE A meeting was held on August 18, 1988 in Rockville, Maryland between NRC staff and representatives of TU Electric to discuss the proposed apstication of advanced fracture mechanics analyses (also referred to as "leak-sefore-break methodology") to the pressurizer surge line at CPSES in order to exclude the dynamic effects associated with postulated pipe ruptures as provided in l
10 CFR 50, Appendix A, General Design Criterion 4.
A copy of the meeting j
notice, the agenda, the list of attendees, and the slides used in the presen.
]
tation are provided as Enclosures 1, 2, 3, and 4.
i
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The issue of whether the pressurizer surge line ought to be considered as a j
candidate for application of leak-before-break thodology was called into ques-l tion by recent operational events at the Troja' iuclear plant where a previously 1
unanalyzed stress condition was found to result ' rom thermal stratification in 1
that line. TV Electric and its consultants from Westinghouse and R. L. Cloud and Associates provided an overview of a process to analytically bound the stress conditions which might occur in the pressurizer surge line at Comanche Peak. They proposed plans for demonstrating the acceptability of applying LBB methodology to the pressurizer surge line of Unit 1, first for the short-term i
and then for the 40-year plant life.
The staff indicated that they were interested in meeting further with Westinghouse' within about two weeks to discuss the bounding analyses for Comanche Peak.
The staff also expressed the need to discuss in greater depth with TU Electric and l
Westinghouse (1) what specific thermal stratification data is available and 1
why it characterizes the pressurizer surge line at Comanche Peak, (2) what instrurentation TU Electric would install to collect Comanche Peak specific data j
3 and how that data compares to other available data, and (3) what operational method (start -up) is planned for the Comanche Peak pressurizer.
These discussions l
1 need to occur before the NRC provides an opinion whether the proposed approach is feasible and whether the staff could give further consideration of the pressurizer su'rge line as a candidate for applying LBB methodology. TV Electric i
stressed their need for near tern MRC feedback since this issue is critical to i
their ongoing design validation and corrective action efforts.
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TV Electric - Summary of Meeting on 8/18/88
- I It was agreed that a follow-up meeting would be scheduled to occur in the next few weeks.
e JalWs H. Wilson, Assistant Director l
for Projects C'mnche Peak Project Division Office of Special Projects l
Enclosures:
1.
Meeting Notice 2.
Agenea 2.
List of Attendees 4
Presentation Sitdes j
cc: See next page I.
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o W. G. Counsil Comanche Peak Steam Electric Station Texas Utilities Electric Company Units 1 and 2 CC:
Jack R. Newman, Esq.
Asst. Director for Inspec. Programs Newman & Holtzinger, P.C.
Comanche Peak Project Division Suite 10C0 U.S. Nur. lear Regulatory Comission 1615 L Street, N.W.
P. O. Box 1029 Washington, D.C. 20036 Granbury. Texas 76048 Robert A. Wooldridge, Esq.
Regional Administrator, Region IV h
Worsham, Forsythe, Saspels &
U.S. Nuclear Regulatory Comission Wooldridge 611 Ryan Plata Drive Suite 1000 2001 Bryan Tower, Suite 2500 Arlington, Texas 76011 Dallas, Texas 75201 Lanny A. Sinkin Mr. Homer C. Schmidt Christic Institute Director of Nuclear Services 1324 North Capitol Street Texas Utilities Electric Company Washington, D.C.
20002 Skyway Tower 400 North Olive Street, L.B. 81 Ms. Billie Pirner Garde. Esq.
Dallas, Texas 75201 Government Accountability Project Midwest Office Mr. R. W. Ackley 104 East Wisconsin Avenue Stone & Webster Appleton, Wisconsin 54911 i
Comanche Peak Steam Electric Station f
P. O. Box 1002 David R. Pigott, Esq.
i Glen Rose. Texas 76043 Orrick, Herrington & Sutcliffe l
600 Montgomery Street i
Mr. J. L. Vota San Francisco, California g4111 i
Westinghouse Electric Corporation l
P. O. Box 355 Anthony Z. Roisman, Esq.
j Pittsburgh, Pennsylvania 15230 Suite 600 l
1401 New York Avenue, NW i
Susan M. Theisen Washington, D.C. 20005 l
Assistant Attorney General
(
Environmental Protection Division Robert Jablon i
j P. O. Box 12548, Capitol Station Bonnie S. Blair r
Austin, Texas 78711-1548 Spiegel & McViarmid 1350 New York Avenue, NW Mrs. Juanita Ellis, President Washington, D.C. 20005-4798 Citizens Association for Sound Energy i
1426 South Polk GeorgeA. Parker, Chairman Dallas, Tcxas 75224 Publ c Utility Comittee Senior citizens Alliance Of i
l Ms. Nancy H. Williams Tarrant County, Inc.
CYGRA Energy Services 6048 Wonder Drive j
2121 N. California Blvd., Suite 390 Fort Worth Texas 76133 Walnut Creek, CA 94596 i
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l W. G. Counsil Comanche Peak Electric Station Texas Utilities Electric Company Units 1 and 2 i
I cc:
Joseph F. Fulbright i
Fulbright & Jaworski l
1301 McKinney Street Houston, Texas 77010 l
i Roger D. Walker Manager, huclear Licensing Texas Utilities Electric Company Skyway Tower 400 North Olive Street, L.8. 81 Dallas, Texas 75201 Texas Utilities Electric Company
}
c/o Bethesda Licensing i
3 Metro Center, Suite 610 i
Bethesda, Maryland 20814 i
I William A. Burchette Esq.
Counsel for Tsx-La Electric Cooperative of Texas Heron, Burchette, Ruckert & Rothwell l
Suite 700 1025 Thomas Jefferson Street, NW Washington. 0.C.
20007 l
l GDS A350CIATES, INC.
Suite 720 1850 Parkway Place l
Marietta, Georgia 30067-8237 l
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ENCLOSURE 2 i
LEAK-BEFORE-BREAK PRESENTATION TO THE NUCLEAR RESULATORY COMMISSION l
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INTRODUCTIONS, IDENTIFICATION OF TOPIC TO BE DISCUSSED.
l ROGER WALKER
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SUMMARY
OF NRC CONCERNS, OVERVIEW 0F OUR PROPOSED 4
i SOLUTIONS.
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JIM MUFFETT f
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WESTINGHOUSE PRESENTATION ON SPECI~IC ANALYSES TO BE PERFORMED.
ED JOHNSON, SETH SWAMY L
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RLCA SUPPORT GF WESTINGHOUSE WORK ON SURGE LINE.
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BILL SERVER 2
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WESTINGHOUSE OWNER'S GROUP-INDUSTRY APPROACH l
I BRAD MAURER i
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VI)
SUMMARY
, ANO PRESENTATION OF SCNEDULE i
JIM MUFFETT 1
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Vlu QUESTIONS, ETC.
ALL i
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ENCLOSURE 3 PAGE 1 of 2 NRC/TU ELECTRIC MEET!NG ON COMANCHE PEAK PZR. SURGE LIHE AUGUST 18, 1988 ATTENDEES Name Affiliation
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NRC/TU ELECTRIC MEETINO ON COMANCHE PEAK PIR. SURGE LIliE.
AUGUST 18, 1988 ATTENDEES Name Affiliation 5m nu M$8rs S.Hou NM/sss a L. 6 M a n la peV2 /dMes l
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ENCLOSURE 4 m$
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COMANCHE PEAK STEAM ELECTRIC STATION i
e LEAK-BEFORE-BREAK PLAN AND ESTIMATED COMPLETION DATES PRESENTATION TO THE l
l NUCLEAR REGULATORY COMMISSION BETHESDA, MD 1
AUGUST 18, 1988 I
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NRC CONCERNS 'NITH CPSES-1 WHIPJET REPORT ON LEAK-BEFORE-BREAK
- 1) 10" ACCUMULATOR LINES CONCERN:
9 THERMALLY-AGED END-OF-LIFE TOUGHNESS PROPERTIES FOR ACCUMULATOR NOZZLES l
SOLUTION:
9 APPLY ACTUAL MATERIAL PROPERTIES IN THE ANALYSIS 9 RE-CALCULATE LBB PARAMETERS TO DEMONSTRATE ACCEPTABILITY 9
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NRC CONCERNS WITH CPSES-1 WHIPJET REPORT ON LEAK-BEFORE-BREAK ll) 14" PRESSURIZER SURGE LINE CONCERN:
9 THERMAL STRATIFICATION EFFECTS OF THE PRESSURIZER SURGE LINE O IMPACT OF STRATIFICATION EFFECTS ON LEAK-BEFORE-BREAK SOLUTION:
9 PERFORM UPDATED DETAILED ANALYSIS IN-CLUDING BOUNDING THERMAL STRATIFICATION ANALYSIS 4 DEMONSTRATE LBB ACCEPTABILITY FOR THE SHORT TERM e EXTEND LBB APPLICABILITY FOR 40-YEAR PLANT LIFE
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_y COMANCHE PEAK SURGE LINE THERMAL.
(.$ am STRATIFICATION AND ACCUMULATOR @[.l @n.? NOZZLE THERMALLY AGED n FRACTURE TOUGHNESS ? it:; i 1 1. FLOW CHART-SURGE LINE 4 i 2. SURGE LINE HEATOP AND COOLDOWN 3 3. DESIGN ANALYSIS 4. SURGE LINE STRATIFICATION 5. NEAR-TERM BOUNDING ANALYSIS PER ASME CODE 6. SURGE LINE PARAMETERS f 7. NEAR-TERM BOUNDING ANALYSIS FOR 3 LEAK-BEFORE-BREAK S 4 8. LEAK-BEFORE-BREAK IN PRESENCE OF }i, STRATIFICATION { 9. LONG-TERM CONFIRMATORY ANALYSIS IEi 10. MONITORING PARAMETERS lW, 11. LEAK-BEFORE-BREAK FOR ACCUMULATOR NOZZLE LOCATION "it ' IV :. TE. k ', i'; -/ \\ $0lS$$i$$$k'gh?,-f'f!f hf _E,.k h,' ' <an A I l 1
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g..: FLOW CHART 'O l SURGE LINE THERMAL STRATIFICATION Near Term Bounding Analysis i I ASME Code Leak Before Break Evaluations Evaluations i I Hot Functional Monitoring Program Long Term Confirmatory Analysis I I ASME Code Leak Before Break Evaluations Evaluations l I f; \\ / x ;pe.. l ( j. i "'" 1 {
~- i y ./ SURGE LINE PLANT HEATUP AND OOOLDOWN T ^ PZR / HL 1 t m PZR W SURGE LINE 1 HL 1 / N ? i
cg t a / l DESIGN ANALYSIS i 200 HEATUP - COOLDOWN TRANSIENTS (FSAR TABLE 3.9N-1) GRADUAL TEMPERATURE CHANGE (FSAR 3.9N-1) THERMAL EXPANSION UNIFORM TEMPERATURE PROFILE T 100 F PER HOUR / \\ t HEATUP COOLDOWN /z -\\ 4
SURGE LINE STRATIFICATION l m PZR j l SURGELINE T PZR 9 T HL f ) UPDATE HEATUP-COOLDOWN TRANSIENTS UPDATE THERMAL EXPANSION UPDATE TRANSIENT STRESSES UPDATE LBB (FCG AND CRACK STABILITY) CONFIRMATION: MONITORING PROGRAM l l
N; / NEAR-TERM BOUNDING ANALYSIS PER ASME CODE i r. S DESIGN B ASIS - ASME lil,19 7 7 EDITION, SUMMER 1979 ADDENDA 9 THERMAL EXPANSION ANALYSIS - TO ASSURE NO ADVERSE CONTACT WITH ADJACENT COMPONENTS l O ASME STRESS AND FATIGUE ANALYSIS - TO ASSURE SHAKEDOWN OF THERMAL BENDING STRESSES - TO ASSURE NO CRACK INITIATION FOR A j LIMITED NUMBER OF YEAP.S OF SERVICE r / N f l
l l .~. l SURGE LINE PARAMETERS l l ) I i I i f l l i COMANCHE PEAK REFERENCE PLANT l HORIZONTAL PIPING LENQTH (FEET) 51. 63. PIPING OIAMETEP 'lNCHES) 14. 14. i I PIPING W ALL THICKNESS (INCHES) 1.406 1.406 i PIPING MATERIAL 3A 376TP316 SA 376TP316 l MAXIMUM DIFFERENTIAL TEMPER ATURE (OF) 320. 300. I l HL N0ZZLE 450 VERTICAL HORIZONTAL i I i l t / \\ 3 m ---
r,- \\: -[ NEAR-TERM BOUNDING ANALYSIS FOR LEAK-BEFORE-BREAK 6 STABILITY OF THROUGH WALL LEAKAGE CRACK 4 GROWTH OF PART-THROUGH-WALL CRACKS I i & Q,, [' ~
i ~ ^ DEVELOP JUSTIFICATION FOR LBB IN THE PRESENCE OF STRATIFICATION l l I DEFINE REPRESENTATIVE TRANSIENTS RESULTING FROM STRATIFICATION USING AVAILABLE DATA l G POSTULATE SUFACE FLAWS. DETERMINE FATIGUE CRACK GROWTH. i O IDENTIFY UPPERBOUND STRATIFICATION LOADS BASED ON AVAILABLE DATA i i 9 DEMONSTRATE PIPING INTEGRITY l 9 PROVIDE JUSTIFICATION FOR LBB IN THE PRESENCE OF STRATIFICATION FOR A LIMITED NUMBER OF YEARS 1 I / \\ l 1 --w- .--,--I
5 / LONG-TERM CONF. AMATORY i l ANALYSIS ,3 s O ESTABLISH MONITORING PROGRAM HOT FUNCTIONAL TESTING - 1988 l l 9 CONFlRMATORY ANALYSIS PER ASME CODE 9 CONFIRMATORY ANALYSIS FOR LEAK-BEFORE-BREAK l f$ -E i A. v. '/ ? L..s. t pg ,q -, .n - 6 V c, : h. / \\ 'I '. + i" I'* .i
9 e MONITORING PROGRAM PARAMETERS 9 PIPE TEMPERATURE 9 PIPE DISPLACEMENT 4 FLUID FLOW 9 FLUID PRESSURE l l l 1 i l / \\ I
l l l ./ l LBB FOR ACCUMULATOR NOZZLE LOCATION w 4 CAST MATERIAL (SA351 CF8A) i e REVIEW OF PLANT SPECIFIC MATERIAL CHEMISTRY FOR THE CAST NOZZLES i 9 EVALUATION OF END-OF-LIFE TOUGHNESS PROPERTIES 9 GENERIC WCAP 10456 AND WCAP 10931 REV.1 METHODS AND CRITERik 9 SA351 CF8A PROPERTIES FOR LEAK RATE AND FLAW STABILITY ANALYSES 9 MARGINS ON LEAK RATE, FLAW SIZE, LOADS O' '2 vs 7q,1 [$.'. LBB FOR NOZZLE LOCATION CONSIDERING THE i u EFFECT OF THERMAL AGING f! o.!. Q?M Qy- / \\ ~ " ~ ' ~ " ~, ' ' ~. ~ {
7 f) v CPSES - 1 ppESSURIZER SURGn i LINE: LBB RESULTS i-h. O CURRENT NORMAL AND SEISMIC DESIGN LOADS SHOW ADEQUATE LBB MARGINS i 1 L= S.94 INCHES l 8 MARGlN ON FLAW SIZE (2 2.0 REQUIRED): f J 3,17 (BASE) / 2.7 9 (S AW) 2.9 2 (sg49) 1 O $0 lg a w.. 2.7 5 (B ASE) lJ 2 27 (SAW) 2.43 (SMAW) 7 ~ A! J.!, / ~ k [1.g, '{l. g
\\ l y i CPSES - 1 PRESSURIZER SURGE LINE: LBB SUPPLEMENT t l 9 REFORMULATE SURGE LINE LOADS TO INCLUDE THERMAL STRATIFICATION BOUNDING EFFECTS S PERFORM NEW PIPING INTEGRITY ANALYSIS DETERMINE NEW LEAK RATE DETERMINE NEW MARGIN ON FLAW SIZE DETERMINE NEW MARGIN ON EXCESSIVE LOADS 9 PROJECTED RESULTS BY 9/30/88 i l
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PRESSURIZER SURGE LINE STRATIFICATION WESTINGHOUSE OWNER'S GROUP 1 PROGRAM WOG MATERIALS SUBCOMMITTEE MEETING AUGUST 4,1988 UNANIMOUSLY APPROVED WESTINGHOUSE SURGE LINE STRATIFICATION PROGRAM 1 i O WOG MAIN COMMITTEE VOTE OCTOBER 6,1989 4 f l / \\ 1
PRESSURIZER SURGE LINE STRATIFICATION \\NESTINGHOUSE OWNER'S GROUP PROGRAM 9 COLLECT DATA FOR WESTINGHOUSE PWR SURGE LINES: - DESIGN (LAYOUT, MATERIALS, etc.) - LOADING - OPERATION i - ISI I O COLLECT APPLICABLE FLOW AND MATERIAL FATIGUE DATA 1 l O CATEGORIZE PARAMETERS WHICH INFLUENCE SURGE l LINE STRATIFICATION l 4 GENERIC FATIGUE ASSESSMENT G RECOMMENDATIONS / N
'I + j 4 1 SCHEDULE 1 i I i l} ACCUMULATOR LINES O COMPLETE PRELIMINARY 10-28-88 I ANALYSIS I O FINAL ANALYSIS AND REPORT 12-09-88 i l 8 11) PRESSURIZER SURGE LINE 1 i G COMPLETE PRdOMINARY 09-30-88 ANALYSIS l i i G FINAL ANALYSIS AND REPORT 10-28-88 I / .\\
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SUMMARY
4 PERFORM LBB ANALYSIS ON ACCUMULATOR l LINES WHICH WILL EMPLOY THERMALLY-AGED END-OF-LIFE MATERIAL TOUGHNESS PROPERTIES i 9 DEVELOP UNDERSTANDING OF SURGE LINE BEHAVIOR FOR STRATIFICATION EFFECTS 4 SHORT TERM LBB ACCEPTABILITY l l i O LONG TERM LBB ACCEPTABILITY \\ i l / \\ t
ENCLOSURE 1 'g UNITED STATES NUCLEAR REGULATORY COMMISSION n j wAssiworom,0. c. 2ous %,y - ,/ August 3, 1988 l Docket Nos. 50-445 and 50-446 MEMORANDUM FOR: Christopher 1. Grimes, Director Comanche Peak Project Division Office of Special Projects FROM: James H. Wilson, Assistant Director for Projects Comanche Peak Project Division Office of Special Projects
SUBJECT:
FORTHCOMING MEETING WITH TU ELECTRIC Date and Time: Thursday August 18, 1988 Roos 88 11 10:00 as Location: One White Flint North 11555 Rockville Pike Rockville, MD 20855
Purpose:
For Applicant and Staff to discuss analyses justifying use of leak-before-break methodology for pressurizer surge line at Coranche Peak
Participants:
- NRC TV Electric Westinghouse Cloud & Assoc.
C H. Wilson R. Walker
- 5. swamy W. Server J. Lyons D. Rancher B. Maurer B. Beaudoin L. Marsh T. Marvray E. Johnson C. Y. Cheng J. Muffett et al W. Hodges K. Wichman M. Malloy D. Terao kWW Ja s H. Wilson, Assistant Director f
Projects Cceanche Peak Project Division Office of Special Projects cc: See next page CONTACT: James H. Wilsen (301)492-3306
- Meetings between hRC technical staff and applicants for licenses are open for interested tnembers of the public, petitioners, intervenors, or other parties to attend as observers pursuant to "Open Meetings and Statement of NRC Staff Policy," 43 Federal Register 280584 6/28/78.
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W. G. Counsil Comanche Peak Steam Electric Station Texas Utilities Electric Company Units 1 and 2 CC: Jack R. Newman, Esq. Asst. Director for Inspec. Programs Newman & Holtzinger, P.C. Comanche Peak Project Division Suite 1000 U.S. Nuclear Regulatory Commission 1615 L Street, N.W. P. O. Box 1029 Washington. 0.C. 20036 Granbury, Texas 76048 Robert A. Wooldridge, Esq. Regional Administrator,, Region IV Worsham, Forsythe, Sampels & U.S. Nuclear Regulatory Commission Wooldridge 611 Ryan Plaza Drive Sui.te 1000 2001 Bryan Tower, Suite 2500 Arlington, Texas 76011 Dallas, Texas 75201 Lanny A. Sinkin Mr. Homer C. Schmidt Christic Institute Director of Nuclear Services 1324 North Capitol Street Texas utilities Electric Company Washington, D.C. 20002 Skyway Tower 400 North Olive Street, L.8. 81 Ms. Billie Pirner Garde Esq. Dallas, Texas 75201 Government Accountability Project Midwest Office Mr. R. W. Ackley 104 East Wisconsin Avenue Stone & Webster Appleton, Wisconsin 54911 Comanche Peak Steam Electric Station i P. O. Box 1002 David R. Pigott, Esq. Glen Rose, Texas 76043 Orrick, Herrington & Sutcliffe 600 Montgomery Street Mr. J. L. Vota San Francisco, California 94111 Westinghouse Electric Corporation P. O. Box 355 Anthony Z. Roisman, Esq. Pittsburgh, Pennsylvania 15230 Suite 600 l 1401 New York Avenue, NW Susan M. Theisen Washington. 0.C. 20005 l Assistant Attorney General Environmental Protection Division Robert Jablon P. O. Box 12548 Capitol Station Bonnie S. Blair Austin, Texas 78711-1548 Spiegel & McDiarmid 1350 New York Avenue, hW 1 Mrs. Juanita Ellis, President Washington, D.C. 20005-4798 Citizens Association for Sound Energy 1426 South Polk Geo ne A. Parker, Chairman Dallas, Texas 75224 Pubile Utility Committee Senior Citizens Alliance Of Ms. Nancy H. Williams Tarrant County, Inc. CYGNA Energy Sersicas 6048 Wonder Drive 2121 N. California Blvd., Suite 390 Fort Worth, Texas 76133 Walnut Creek, CA 94596 i e
i m W. G. Counsil Comanche Peak Electric Station Texas Utilities Electric Company Units 1 and 2 cc: Joseph F. Fulbright Fulbright & Jaworski 1301 McKinney Street Houston, Texas 77010 Roger D. Walker Manager, Nuclear Licensing Texas Utilities Electric Company Skyway Tower 400 North Olive Street, L.B. 81 Dallas, Texas 75201 Mr. Jack Redding c/o Bethesda Licensing Texas Utilities Electric Company 3 Metro Center, Suite 610 Bethesda, Maryland 20814 William A. Burchette Eso. Counsel for Tex-La Electric Cooperative i of Text l Heron, Burchetto, Ruckert & Rothwell Suite 700 1025 Thomas Jefferson Street, NW hashington, D.C. 20007 GOS ASSOCIATES, INC. Suite 720 1850 Parkway Place Marietta, Georgia 30067-8237 Administrative Judge Peter Bloch U.S. Nucsear Regulatory (c.mmission ' Washington. 0.C. 20555 Elizabeth B. Johnson Administrative Judge Oak Ridge National Laboratory P. O. Box X Building 3500 Oak Ridge, Tennessee 37830 Or. Kenneth A. McCo11am 1107 West Knapp Stillwattr. 0Alahcra 74075 Dr. Walter H. Jordan 881 West Outer Drive Oak Ridge TN 37830 l 1 .}}