ML072060123
| ML072060123 | |
| Person / Time | |
|---|---|
| Site: | Wolf Creek  |
| Issue date: | 07/25/2007 |
| From: | Mauricio Gutierrez NRC/RES/DFERR/DDME/CIB |
| To: | Uhle J NRC/RES/DFERR |
| References | |
| Download: ML072060123 (6) | |
Text
July 25, 2007 MEMORANDUM TO: Jennifer L. Uhle, Director Division of Fuel, Engineering, and Radiological Research Office of Nuclear Regulatory Research THRU: Robert Hardies, Chief /RA/ Component Integrity Branch Division of Fuel, Engineering, and Radiological Research Office of Nuclear Regulatory Research FROM: Mauricio Gutierrez, General Engineer /RA/ Component Integrity Branch Division of Fuel, Engineering, and Radiological Research Office of Nuclear Regulatory Research
SUBJECT:
SUMMARY
OF THE JULY 17, 2007 CATEGORY 2 PUBLIC MEETING BETWEEN THE NUCLEAR REGULATORY COMMISSION STAFF AND THE EXPERT PANEL FOR THE ADVANCED FINITE ELEMENT ANALYSES (FEA) OF PRESSURIZER NOZZLE WELDS
On July 17, 2007, the U.S. Nuclear Regulatory Commission (NRC) staff conducted a Category 2 public meeting with industry representatives. The meeting was held at Dominion Engineering, Inc. offices in Reston, VA by means of a teleconference with electronically distributed presentations. A list of attendees, industry and NRC staff presentations are enclosed. The meeting was a continuation of ongoing discussions between industry representatives and NRC staff regarding the likelihood that pressurizer nozzle dissimilar metal welds, susceptible to stress corrosion cracking, will leak before ruptur ing under certain conditions.
The meeting specifically provided an opportunity for the NRC staff to provide comments on Draft Report A (ADAMS Accession Number: ML071970073) submitted by industry on July 10, 2007.
The meeting began with a discussion by representatives of Dominion Engineering of their final analytical results. New evaluations addressing the effects of multiple flaws were also introduced.
Model validation was discussed further, and will be addressed specifically through evaluation comparisons with a crack found at Duane Arnold as described in Materials Reliability Program Report (MRP)-113 (ADAMS Accession Number: ML042080193) and a comparison between calculated and measured residual stresses from a European Union round-robin validation exercise. The meeting concluded with a discussion on the final project schedule, milestones, and deliverable. The NRC staff recognized industry's significant efforts to develop, benchmark, verify, and evaluate the advanced Finite Element Analysis program including validation of weld residual stresses. A table of NRC comments was provided in the NRC presentation with the most significant comments highlighted in yellow.
CONTACT: Mauricio Gutierrez, RES/DFERR 301-415-1122
J. Uhle
A member of the public was present at the meeting. The information discussed was non-proprietary. Please direct any inquiries to me at 301-415-1122 or mrg3@nrc.gov.
Enclosure:
- 1. List of Attendees
- 2. Industry Presentation
- 3. NRC Presentation
J. Uhle
A member of the public was present at the meeting. The information discussed was non-proprietary. Please direct any inquiries to me at 301-415-1122 or mrg3@nrc.gov.
Enclosure:
- 1. List of Attendees
- 2. Industry Presentation
- 3. NRC Presentation
DISTRIBUTION
- DFERR r/f ME r/f MEvans RidsNrrDprPspb RidsNrrDciCpnb RidsOpaMail RidsNrrAdro RidsNrrDpr Tlupold RidsOgcMailCenter RidsNrrDe JGrobe TMensah WBateman Chai-Fu Sheng RidsACrsAcnwMailCenter RHardies ESullivan TChan G:¥DFERR¥Mauricio Gutierrez¥July 17 Meeting¥July 17 Meeting Summary.doc OAR in ADAMS? (Y or N) Y ADAMS ACCESSION NO.: ML072060132 TEMPLATE NO. RES- 006 Publicly Available? (Y or N) Y DATE OF RELEASE TO PUBLIC 07/31/07 SENSITIVE? N To receive a copy of this document, indicate in the box:
" C" = Copy without enclosure " E" = Copy with enclosure A N" = No copy OFFICE RES/DFERR/CIB RES/DFERR/CIB BC:RES/DFERR/
CIB SUNSI Review Complete SUNSI Review Complete NAME MGutierrez ACsontos RHardies MGutierrez RHardies DATE 07/25/07 0724/07 07/24/07 07/25/07 07/25/07 OFFICIAL RECORD COPY
Nuclear Regulatory Commission Meeting with the Expert Panel for Wolf Creek Finite Element Analysis July 17, 2007 U.S. NUCLEAR REGULATORY COMMISSION Edmund Sullivan Aladar Csontos Tim Lupold Simon Sheung Dave Rudland (NRC Contractor) Mauricio Gutierrez INDUSTRY Craig Harrington, EPRI Tim Gilman, Structural Integrity Glenn White, DEI John Broussard, DEI Jim Riley Guy DeBoo, Exelon Lee Goyette, DCCP Terry McAlister, VC Summer Warren Bamford, Westinghouse Doug Killian, AREVA Ken Yoon, AREVA PUBLIC Daniel Horner, Platts/McGraw Hill Enclosure 1
cc: Mr. Anthony Pietrangelo, Vice President Regulatory Affairs Nuclear Energy Institute 1776 I Street, NW, Suite 400 Washington, DC 20006-3708 arp@nei.org Mr. Jack Roe, Director Operations Support Nuclear Energy Institute 1776 I Street, NW, Suite 400 Washington, DC 20006-3708 jwr@nei.org Mr. Charles B. Brinkman Washington Operations ABB-Combustion Engineering, Inc. 12300 Twinbrook Parkway, Suite 330 Rockville, MD 20852 brinkmcb@westinghouse.com Mr. Gary L. Vine, Executive Director Federal and Industry Activities, Nuclear Sector EPRI 2000 L Street, NW, Suite 805 Washington, DC 20036 gvine@epri.com Mr. James Gresham, Manager Regulatory Compliance and Plant Licensing Westinghouse Electric Company P.O. Box 355 Pittsburgh, PA 15230-0355 greshaja@westinghouse.com Ms. Barbara Lewis Assistant Editor Platts, Principal Editorial Office 1200 G St., N.W., Suite 1100 Washington, DC 20005 Barbara_lewis@platts.com Mr. Gary Welsh Institute of Nuclear Power Operations Suite 100 700 Galleria Parkway, SE Atlanta, GA 30339-5957 welshgc@inpo.org Mr. Alexander Marion, Executive Director Nuclear Operations & Engineering Nuclear Energy Institute 1776 I Street, NW, Suite 400 Washington, DC 20006-3708 am@nei.org Mr. Jay Thayer, Vice President Nuclear Operations Nuclear Energy Institute 1776 I Street, NW, Suite 400 Washington, DC 20006-3708 jkt@nei.org Mr. John Butler, Director Safety-Focused Regulation Nuclear Energy Institute 1776 I Street, NW, Suite 400 Washington, DC 20006-3708 jcb@nei.org Mr. James H. Riley, Director Engineering Nuclear Energy Institute 1776 I Street, NW Washington, DC 20006-3708 jhr@nei.org Mr. David J. Modeen Vice President and Chief Nuclear Officer EPRI 1300 W. T. Harris Boulevard Charlotte, NC 28262-8550 dmodeen@epri.com Mr. John Gaertner EPRI 1300 W.T. Harris Boulevard Charlotte, NC 28262-8550 jgaertner@epri.com Ms. Rosa Yang EPRI 3412 Hillview Avenue Palo Alto, CA 94304-1338 ryang@epri.com
Mr. Kenneth Huffman EPRI 1300 W. T. Harris Boulevard Charlotte, NC 28262-8550 khuffman@epri.com