ML072410236

Transmittal of EPRI Report, Advanced Fea Evaluation of Growth of Postulated Circumferential PWSCC Flaws in Pressurizer Nozzle Dissimilar Metal Welds (MRP-126, Rev. 1): Evaluations Specific to Nine Subject Plants

ML072410236
Person / Time
Site:	Wolf Creek, Nuclear Energy Institute
Issue date:	08/13/2007
From:	Marion A Nuclear Energy Institute
To:	Dyer J Office of Nuclear Reactor Regulation
References
Download: ML072410236 (1)

Text

NUCLEAR ENERGY INSTITUTE Alexander Marion EXECUTIVE DIRECTOR NUCLEAR OPERATIONS & ENGINEERING NUCLEAR GENERATION DIVISION August 13, 2007 Mr. James E. Dyer Director, Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Mail Stop O-5-E-7 Washington, MD 20555

Subject:

Transmittal of EPRI Report, "Advanced FEA Evaluation of Growth of Postulated Circumferential PWSCC Flaws in Pressurizer Nozzle Dissimilar Metal Welds (MRP-126, Rev. 1):

Evaluations Specific to Nine Subject Plants" Project Number: 689

Dear Mr. Dyer:

Enclosed is the final version of the subject report containing the evaluation of potential generic implications of the pressurizer piping indications that were found at Wolf Creek. The enclosed version contains a few minor editorial/wording changes that were made within the Report Summary (pages v & vi) only. There are no technical changes within the main body of the report from the version I forwarded to you August 1.

If you have any questions on this matter, please contact Jay Thayer at 202.739.8112; jkt~nei.org or me at 202.739.8080; am~nei.org.

Sincerely, Alexander Marion Enclosure C:

Mr. John A. Grobe, Director, Nuclear Security Special Projects, NRC Ms. Michelle Evans, Director, Division of Component Integrity, NRC Mr. William H. Bateman, Deputy Director, Materials and Chemical Engineering Branch, NRC Mr. Ted J. Sullivan, U. S. Nuclear Regulatory Commission 17761 Street, NW I Suite 400 1 Washington, DC 1 20006-3708 1 P: 202.739.8080 1 F: 202.533.0164 1 am@nei.org I www.nei.org

-c,[