ML20134H150
| ML20134H150 | |
| Person / Time | |
|---|---|
| Issue date: | 11/06/1996 |
| From: | Wang E NRC (Affiliation Not Assigned) |
| To: | Matthews D NRC (Affiliation Not Assigned) |
| References | |
| NUDOCS 9611130547 | |
| Download: ML20134H150 (13) | |
Text
.
November 6, 1996 i
MEMORANDUM T0:
David B. Matthews, Chief Generic Issues and Environmental Projects Branch Division of Reactor Program Management i
Office of Nuclear Reactor Regulation FROM:
Egan Y. Wang, Reactor System Engineer Original Signed By-Generic Issues and Environmental Projects Branch Division of Reactor Program Management Office of Nuclear Reactor Regulation
SUBJECT:
MEETING
SUMMARY
OF OCTOBER 29, 1996, WESTINGHOUSE AND NRC REGARDING RETRAN AND VIPRE COMPUTER CODES On October 29, 1996, representatives of Westinghouse met with representatives of the Nuclear Regulatory Commission (NRC). The purpose of this meeting was to discuss Licensing issues with regard to Westinghouse's RETRAN and VIPRE 4
computers codes. Westinghouse representatives discussed current status on both RETRAN and VIPRE computer codes. Westinghouse representatives mentioned that several utilities are currently using these computer codes. Westinghouse representatives stated that the methodologies used in these codes have been reviewed and approved by the NRC for referencing in light water reactor licensing applications. Westinghouse representatives indicated Westinghouse is applying RETRAN and VIPRE for Chapter 15 non-LOCA safety analysis, based on NRC-approved codes and methodology.
Westinghouse is currently performing work to demonstrate five criteria:
Eligibility - NRC approved codes and methods Application procedures - in-house design procedures in compliance with NRC-approved applications Personnel training and qualification - training program for user qualification Comparison calculations - comparisons with benchmark data from other NRC approved codes and/or tests Quality assurance (QA) and change control - QA program meets 10 CFR 50 Appendix B requirements.
Once the above five criteria are met, Westinghouse will notify NRC of compliance to the five criter%.
Majority of the discussion involved of proprietary information. Attachment 1 provides a list of meeting attendees. is the non-proprietary material presented by Westinghouse representatives.
i Attachments: As stated I
cc w/att:
see next page h
j Document name: 961029MT. SUM s.. pr viqu. Concurr nc/ j OFC PGEB' PM:PGEB' SC:PGEB' SC:PG M
C:PG NAME EWang:sw CCraig RArchitz.I FA wicz DMatth ws 11/[ /96 11/[n/96 l
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WASHINGTON, D.C. 20086-0001
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~ MEMORANDUM T0:-
' David B. Matthews, Chief i
I Generic Issues and' Environmental Projects Branch Division of Reactor Program Management.
Office of Nuclear Reactor Regulation'-
FROM:
Egan Y. Wang, Reactor System Engineer i
l=
Generic Issues and Environmental l
Projects Branch Division of Reactor Program Management Office of Nuclear Reactor Regulation
SUBJECT:
MEETING
SUMMARY
OF OCTOBER 29, 1996, WESTINGHOUSE AND NRC REGARDING RETRAN AND VIPRE COMPUTER CODES j
L
~
i On October 29, 1996, representatives of Westinghouse met with representatives of the Nuclear Regulatory Commission' to discuss Licensing issues with regar(NRC).The purpose of this meeting was d to Westinghouse's RETRAN and VIPRE
-i i
, computers codes. -Westinghouse representatives discussed current status on
{
both RETRAN and VIPRE computer codes. Westinghouse representatives, mentioned
'that several utilities are currently using these computer codes.
Westinghouse representatives stated that the methodologies used in these codes have been reviewed and approved by the NRC for referencing in light water reactor licensing applications. Westinghouse representatives indicated Westinghouse is applying RETRAN and VIPRE for Cha NRC-approved codes and methodology. pter 15 non-LOCA safety analysis, based on Westinghouse is currently ~ performing work to demonstrate five criteria:
1 Eligibility - NRC approved codes'and methods Application procedures - in-house design procedures in compliance with l
NRC-approved applications Personnel training and qualification - training program for user qualification Comparison calculations - comparisons with benchmark data from other NRC approved codes and/or tests Quality assurance (QA) and change control - QA program meets 10 CFR 50 Appendix B requirements.
4 Once'the above five criteria are met, Westinghouse will notify NRC of I
compliance to the five criteria.
The majority of the discussion involved proprietary information. Attachment 1 provides a list of meeting attendees. is _ the non-proprietary material presented by Westinghouse l
representatives.
Attachments: As-stated cc w/att:
see next page i
A
I[
l y
a j
DISTRIBUTION: Mtg. Summary of October 29 Meeting with Westinghouse l
Dated November 6, 1996 HARD COPY PCentral File l
Public l
PGEB r/f R. Cooper, RI E. Merschoff, RII W. Alexion, RIII J. Dyer, RIV C. Craig E. Wang.
0GC ACRS E-MAIL F. Miraglia A. Thadani R. Zimmerman B. Sheron T. Martin G. Lainas i
M. Virgilio E. Jordan D. Matthews R. Wessman l
F. Akstulewicz i
R. Architzel l
E. Weiss F. Orr S. Brewer l
F t
n-m l
NRC FILE CEMIEB COPY
cc:
1 Mr. Nicholas Liparulo Westinghouse Electric Corporation PO Box 355 j
Pittsburgh, PA 15230-0355 1
Mr. Hank Sepp Westinghouse Electric Corporation PO Box 355 Pittsburgh, PA 15230-0355 i
Mr. Andrew Drake WOG Project Manager Westinghouse Electric Corporation PO Box 355 Pittsburgh, PA 15230-0355
)
Mr. Sumit Ray Westinghouse Electric Corporation PO Box 355 Pittsburgh, PA 15230-0355
1 l
l NRC/ WESTINGHOUSE MEETING LIST OF ATTEWEES Oct 29, 1996 l
88tlE ORGANIZATION Ivey, Janelle Westinghouse Weiss, Eric NRC l.
Orr, Frank NRC Lo, Sui-Sang Union Electric Company Serita, Brewer NRC l
Sung, Yixing Westinghouse Boyer, Roger HL&P Sechrist, Jim Westinghouse Ray, Sumit Westinghouse i
l Wang, Egan NRC l
l l
l l
I ATTACHMENT 1
Westinghouse's RETRAN/VIPRE Licensing Introduction Purpose of Meeting:
To present Westinghouse's (W) proposed licensing process for adopting the RETRAN and VIPRE l
computer codes and obtaining NRC concurrence Meeting Agenda:
l Topic Presenter Time (Min.)
l Introduction Sumit Ray (W) 10 Utility Application Roger Boyer (HL&P) 5 l
VIPRE-01 Application Yixing Sung (W) 45 RETRAN-02 Application Jim Sechrist (W) 45 Overview of }y Proposed Sumit Ray (W) 10 V
Licensing Process Discussion All 30 i
l-Westinghouse Non-Proprietary Class 3
. Westinghouse's RETRAN/VIPRE ~ Licensing.
Overview of Westinehouse Proposed Licensine Process 1
1 l
Presented by l
l Sumit Ray Westinghouse Electric Corporation i
October 29,1996 l
k e m ig. = wp 1
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1 Westinghouse's RETRAN/VIPREtLicensing:
RETR"AN!& LVIPREiCodes RETRAN-02 Code - A system T/H transient code developed for o
Electric Power Research Institute (EPRI)
VIPRE-01 Code - A subchannel T/H code developed for EPRI o
Both codes have been reviewed and approved by the NRC o
for referencing in LWR licensing applications o
Many SER's have been issued to utilities on RETRAN/VIPRE applications for a wide variety of W plants.
Commonwealth Edison (Byron & Braidwood)
TU Electric (Comanche Peak)
Duke Power (McGuire & Catawba)
Northern States Power (Prairie Island)
Virginia Power (North Anna & Surry)
WCNOC (Wolf Creek) o W's methodologies have previously been approved with use of RETRAN/VIPRE codes Revised Thermal Design Procedure (RTDP)
WRB-1 & WRB-2 DNB correlations 1
retran_viprearemp 2
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(
i LWestinghous~e's;RETRAN/VIPRE Licensin'gj Westinghouse's Applications 4 1
E is applying RETRAN & VIPRE for FSAR Chapter 15 o
l non-LOCA safety analysis, based on 1
NRC-approved computer codes NRC-approved analysis methodology o
E's extensive benchmark calculations confirm RETRAN
& VIPRE can be equivalent to current design codes LOFTRAN (system transient code)
THINC (subchannel code) o There is no issue on RETRAN & VIPRE applications with current NRC-approved safety. analysis methodology o
E's RETRAN/VIPRE applications will leverage and build upon existing expertise in the industry o
Scheduled domestic applications
- South Texas SG replacement (licensing submittal in 1998)
- Callaway Cycle 10 reload design in 1998 i
retrartvywesexp 3
- Westinghouse?s4RETRAN/VIPRE ? Licensing.
Proposedlicensisigl Approach!
o Use a simplified licensing approach proposed in W's letter to the I
j NRC (NTD-NRC-95-4419) i l
Demonstrate compliance to five criteria and notify the NRC:
o 1.
Eligibility - NRC-approved codes and methods 2.
Application Procedures - In-house design procedures in compliance with NRC-approved applications j
3.
Personnel Training & Qualification - Training program j
for user qualification j
4.
Comparison Calculations - comparisons with benchmark data from other NRC-approved codes and/or tests-l 5.
QA and Change Control - QA program meets 10CFR50 Appendix B requirements f
o Simplified licensing approach is mutually beneficial l
No compromise to safety standards Maintain high quality of engineering Streamline licensing process i
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l retran_viprenc.wp
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i Westinghouse's RETRAN/VIPRElLicensing.
i ProposedzLicensing -Approach; l
i E's RETRAN & VIPRE applications are in full compliance o
with the five licensing criteria j
1.
RETRAN, VIPRE and W's safety analysis methodology j
have been approved by the NRC i
2 Codes will be used in accordance with W's design l
procedures for non-LOCA safety analyses 3.
A large staff of qualified and experienced engineers and l
training programs updated for new users I
4.
RETRAN & VIPRE are compared with W's design codes l
and/or test data. Comparison results are explained and f
documented as part of QA records l
5.
Software Control under Westinghouse Quality Management l
System (Rev.1) approved by the NRC i
i o
QMS (Rev.1) commitments are applicable to RETRAN & VIPRE l
l Error reporting (already inspected by the NRC) l Software design control (already inspected by the NRC)
Document control (already inspected by the NRC)
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retrattvipenc.wp 5
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1 Westinghouse's1RETRAN/VIPREiLicensing j
. Proposed l Licensing?Approacht i,
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o W's records contain Detailed RETRAN & VIPRE qualification results Demonstration of full compliance to the five criteria I
o NRC will be notified on compliance to the five criteria j
NRC audit if necessary I
Response to any NRC questions i
o Summary of code qualification results will be provided i
j o
A closure letter is requested from the NRC approving.)V's RETRAN & VIPRE applications with existing safety analysis methodology l
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renocem wp 6
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Westinghouse's RETRAN/VIPRELLidensing Overview Summary i
i i
i Westinghouse's RETRAN/VIPRE applications are based on o
l NRC-approved codes and safety analysis methodology I
The simplified licensing approach (5 criteria) is applicable o
l W will demonstrate compliance to licensing acceptance criteria o
l W will provide code qualification summary o
i o
.LV. maintains detailed results on record for any necessary NRC's audit i
o W will notify the NRC on licensing compliance l
o A closure letter is requested from the NRC i
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retran vipre.nrc.wp
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