ML20153F155
| ML20153F155 | |
| Person / Time | |
|---|---|
| Issue date: | 09/21/1998 |
| From: | Wetzel B NRC (Affiliation Not Assigned) |
| To: | NRC (Affiliation Not Assigned) |
| References | |
| GL-96-06, GL-96-6, NUDOCS 9809290025 | |
| Download: ML20153F155 (15) | |
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MEETING PARTICIPANTS: Nuclear Ensrgy Instituta (NEI) and Repres ntatives from the industry
SUBJECT:
MEETING WITH NEl TO DISCUSS TECHNICAL BASIS DOCUMENT PERTAINING TO GENERIC LETTER (GL) 96-06,
" ASSURANCE OF EQUIPMENT OPERABILITY AND 1
CONTAINMENT INTEGRITY DURING DESIGN BASIS ACCIDENT CONDITIONS" On August 27,1998, members of the NRC staff met with representatives from NEl and the industry to discuss the content and scope of a proposed EPRI technical basis report. The EPRI technical basis document is being developed by the industry and will be used to address questions raised by the staff pertaining to analyses of the waterhammer issue raised in GL 96-06. The list of attendees is contained in Enclosure 1. The presentation slides used during the meeting are contained in Enclosure 2.
The NEl/ industry effort is presently supported by ten utilities representing approximately 30 plants. More utilities are expected to join the effort. The industry group that met with the staff is composed of a steering group whose goal is to prepare a generic technical basis report which will be used to address GL 96-06 waterhammer issues and other similar issues. The focus of the report will be on closure of the issues identified by recent GL 96-00 requests for additional information. The steering group met with the staff to outline their plan for development cf the technical basis document, discuss milestones and schedule and establish interactions with the NRC. Both the NRC staff and the steering group agreed that frequent and open !
communications between the steering group and the NRC staff is key to successful ,
accomplishment of the goal.
The steering group is currently collecting industry data on waterhammer from numerous sources including actual waterhammers, laboratory data, universities, technical reports, etc. An i expert panel is being formed which the NRC will meet with sometime in the fall. The goal is to l complete the final technical basis report by July 1999.
l ORIGINAL SIGNED BY Beth A. Wetzel, Senior Project Manager Project Directorate lll-1
^
9909290025 990921 Division of Reactor Projects - lil/lV PDR REV0P ER C Office of Nuclear Reactor Regulation Enclosures (2): As stated cc w/encls: Mr. David J. Modeen Mr. Kurt Cozens Director, Engineering Project Manager
, Nuclear Generation Division Nuclear Energy Institute Nuclear Generation Division Nuclear Energy institute
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1776 i Street, NW, Suite 400 1776 l Street, NW, Suite 400 $, 1 Washington, DC 20006 Waphington, DC 20006 Q G [ } ,^ ] g A h YD DOCUMENT NAME: G:\WPDOCS\GL9606\AUGMTG. SUM To receive a copy of this document. indicate in the box C= Copy w/o attachment / enclosure E= Copy with attachrnent/ enclosure N = No copy OFFICE PM:PD31 E , LA:PD31 E BC:SPLB . [ D:PD31 6 NAME BWetzel:dbh CJamersond[LMarsJ#P CACarpen&
DATE 9/jf,/98 g/d/98 h 9k/98 Q h, 9Aj/98
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I DISTRIBUTION FOR MEETING
SUMMARY
DATED: September 21, 1998 )
i BARD COPY Central File I PUBLIC PD#3-1 Reading OGC ACRS E-MAIL S. Collins /F. Miraglia (SJC1/FJM)
B. Boger (BAB2) l E. Adensam (EGA1) i C. A. Carpenter (CAC) I C. Jamerson (CAJ1) i T. Martin (SLM3)
L. Marsh (LBM)
G. Hubbard (GTH)
J. Tatum (JET 1) i S. Magruder (SLM1) ,
B. McCabe (BCM) l M. Tschiltz (MDT)
T. Hiltz (TGH) .
D. Lange (DJL) l M. Kunowski(MAK3) 1 l
MP Meetina Particloants Name AffJliation L. B. Marsh NRC George hubbard NRC Jim Tatum NRC u
Beth A.Wetzel NRC
' Matt Zweigle Attran Corp.
Tom Esselman Altran Corp.
Mike Robinson Duke Power Dave Modeen NEl Lee Rochino Rochester Gas & Electric Roger Hayes SNC Kurt Cozens NEl Hsin-Yung Chang NYPA Lenny Azzarello Duke Power Keith Peterson NSP Bob Hammersley FAI Mark Aulik WPS Millam Straka NUS Avtar Singh EPRI Vaughn Wagoner CP&L l
i ENCLOSURE 1 l
1
EPRI/NPG -- -
EPRI/ Industry Collaborative Project to Support Resolution of GL 96-06 Waterhammer RAIs Meeting with NRC August 27,1998 e
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k Whnrcri. ppt SARA - 1
EPRI/NPG --
Meeting Objectives To overview project scope.
To identify milestones and schedule.
To establish interactions with NRC.
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Whnrcri. ppt SARA 2
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EPRI/NPG -
, Background l
- Most licensees have completed analyses to address waterhammer and two i phase flow issues in response to GL 96-06.
- NRC has issued RAIs during 1998.
- Industry /NRC meeting to clarify RAIs was held on 5/27-28/1998.
- NRC expectations
- to assure that waterhammer and two-phase flow issues have been adequately addressed (focus is on analytical methodology, assumptions, justification and corrective actions) ;
- obtain sufficient information from licensees to complete review and close out issues
- Industry stated an interest in development of a generic Technical Basis Report (TBR) to address NRC RAIs
- NRC willing to consider schedule relief for responses to RAIs using the TBR i i
Whnrcrl. ppt SARA 3 -
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e EPRI/NPG -
Status
- TEN utilities have indicated that they will support the NEI/ Industry initiative.
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- Consumers
- CP&L
- Duke
- NSP
- NYPA
- RG&E
- SCE
- SNC
- WEPCO
- WPS Additional utilities are expected to join.
Whnrcri. ppt SARA 4
-t EPRI/NPG Objectives of the EPRI/ Industry 1 Collaborative Project l
1 i
Prepare a generic Technical Basis Report for resolving GL 96-06 waterhammer issues and other similar issues.
- Focus will be on closure of the issues identified in RAIs.
- Develop information that can be used by participating utilities
- to support plant-specific responses to RAIs.
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Whnrcri. ppt SARA 5 i
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, A , > 3 ,,ti' EPRI/NPG f Gather Provide /$j Identify Peer Data input / Approach p # je Review Panel + ( & M "' m ntal Evaluation grp W ~
and Plant Tests)
T V Develop Provide Technical < Scope of .
Basis Evaluation ;
Industry Report 4..... ......,
Approach a j ~
to Develop V V NRC/ industry a Generic Industry Experts , _ _
Interactions
& Perform Peer g Techn.ical Evaiuation and : ,
d--------"
basis Provide Recommendat ions i
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U Industry -
NRC Review Review -
l v Approval and Use j Whnrcri. ppt
EPRUNPG -
Expert Panel Three recognized technical experts have agreed to participate.
Selected to provide an objective technical review and guidance.
Continual involvement in TBR development.
Document concurrence / comments on the final TBR.
Whnrcri. ppt SARA 7 i
EPRI/NPG .
Issues To Be Evaluated
- Expand on basic methodology described in NUREG/CR-5220.
- Provide information that can be used to benchmark analysis codes for the specific loading conditions.
- Describe the types of waterhammers that can occur.
- Describe acceptable assumptions and input parameters such as ,
fluid structure interaction, cushioning, speed of sound, force reductions, and explain why acceptable.
- Describe the uncertainty in the waterhammer analyses.
8 Whnrcrl. ppt
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EPRI/NPG .-
TBR Development Process i
An acceptable basis will be attained by:
- performing analyses
- reviewing laboratory test data
! - reviewing data from in-plant tests
- using lessons learned from actual events
- Additional testing will be performed if determined to be necessary.
Whnrcrl. ppt SARA 9
EPRI/NPG .
Contents of the Generic Technical Basis Report (TBR) j
- Describe waterhammers that can occur and parameters that impact the magnitude.
- Provide guidance on selection of the " worst case" scenarios (FMEA, single active failure, etc.).
- Provide information that can be utilized to calculate:
- initial waterhammer pressure pulse.
- support loads and to qualify supports.
- piping stresses and nozzle stresses.
i Whnred. ppt SARA 10 l
l __ . ._______ _- _ _ _ _ _ ______________ _________ _ -__ - -___ ___ _ -_-__ __-_ __ _ -
EPRI/NPG .
Schedule July 30,1998 Kick-offMeeting :
August 15,1998 Scope Definition Complete, Start Work !
August 27,1998 Meet with NRC September,1998 Expert Panel Meeting November,1998 Expert Panel Meeting January,1999 Utility Review Meeting April,1999 Expert Panel Meeting June,1999 Draft TBR Complete July,1999 Final TBR provided to NRC Whnrcri. ppt SARA 11
,l EPRI/NPG .;
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NRC Interactions Maintain open communications with NRC:
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- NRC staff will be kept informed of the status and early results of project activities.
- NRC staff will be invited to observe any testing that is performed.
identification of technical contacts. i
- NRC.will be invited to meet with the Expert Panel.
- Early feedback from NRC needed/ expected.
- t Whnrcrl. ppt SARA 12
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