NL-05-0851, Notice of Partial Implementation of BWRVIP-18-A, BWR Vessel and Internals Project Core Spray Internals Inspection and Flaw Evaluation Guidelines
| ML051330262 | |
| Person / Time | |
|---|---|
| Site: | Hatch, PROJ0704  |
| Issue date: | 05/10/2005 |
| From: | Sumner H Southern Nuclear Operating Co |
| To: | Document Control Desk, Office of Nuclear Reactor Regulation |
| References | |
| NL-05-0851 | |
| Download: ML051330262 (2) | |
Text
-
H. L Sumner, Jr.
Southern Nuclear Vice President Operating Company, Inc.
Hatch Project Post Office Box 1295 Birmingham. Alabama 35201 Tel 205.992.7279 SOUTHERN A
May 10, 2005 COMPANY Energy to Serve Your World'>
Docket No.: 50-321 NL-05-0851 U. S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, D. C. 20555-0001 Edwin 1. Hatch Nuclear Plant Notice of Partial Implementation of BWRVIP-18-A, "BWR Vessel and Internals Project Core Spray Internals Inspection and Flaw Evaluation Guidelines" Ladies and Gentlemen:
On March 30, 2005 the Boiling Water Reactor Vessel and Internals Project (BWRVIP) transmitted BWRVIP-1 8-A, "BWR Vessel and Internals Project Core Spray Internals Inspection and Flaw Evaluation Guidelines" (Enclosure 1) to the NRC. Pursuant to previous agreements with the BWRVIP (Enclosures 2 & 3), participating licensees will notify the staff of a decision by the licensee to not fully implement the approved guidance within 45 days of guidance receipt. Plant Hatch Unit I will partially implement the subject guidance with respect to certain welds on the Core Spray sparger.
BWRVIP-18-A requires periodic examination of core spray sparger welds. For Hatch Unit 1, Southern Nuclear Operating Company (SNC) cannot perform examinations of two of the welds (welds 57 & 58, see sketch I BN-7-7, Enclosure 4) as specified due to a repair clamp that replaced one sparger weld (weld 55) in 1984 (see Drawing S 15486, ). The clamp partially obstructs two adjacent welds such that the full examination specified by the guidelines cannot be accomplished. The two (2) welds and clamp are examined at the specified frequency and the remaining nine comparable welds are fully examined as specified by BWRVIP-18-A.
A technical justification for deviating from inspection guidance was prepared in accordance with the guidance of BWRVIP-94 and sent to the BWRVIP (Enclosure 5).
This guidance provides assurance that there are no safety implications or reliability concerns with the deviation.
This letter contains no NRC commitments. If you have any questions, please advise.
Veuly yours, LSumner, Jr.
HLSIPAH/dajI
U. S. Nuclear Regulatory Commission NL-05-0851 Page 2
Enclosures:
I.Letter 2005-152 Dated March 30, 2005, from William A. Eaton, Chairman, BWR Vessel and Internals Project, to NRC Document Control Desk (Attention: Meena Khanna), Transmitting Project 704, BWRVIP-1 8-A; BWR Core Spray and Internals Inspection and Flaw Evaluation Guidelines 2.Letter 97-461 Dated May 30, 1997, from Carl Terry, Chairman, BWR Vessel and Internals Project to NRC Document Control Desk (Attention: Brian Sheron),
Reaffirming the BWR Utility Commitments to the Goals, Objectives, and Products of the BWR Vessel and Internals Project (BWRVIP) 3.Letter 97-870 Dated October 30, 1997, from Carl Terry, Chairman, BWR Vessel and Internals Project to NRC Document Control Desk (Attention: Brian Sheron),
to Clarify the BWRVIP Utilities Understanding of the Expectations of the NRC Staff Regarding Implementation of BWRVIP Products 4.Sketch 1-BN-7-7 5.Letter MI-05-0168 Dated, January 26, 2005 from Mr. Jeff A. Williams, SNC Materials and Inspection Services Manager, to Mr. Thomas J. Mulford, EPRI, Which has as an Attachment the Technical Justification for Deviating from Inspection Guidance Provided in BWRVIP-18 6.Drawing S 15486 cc:
Southern Nuclear Operating Companv Mr. J. T. Gasser, Executive Vice President Mr. G. R. Frederick, General Manager - Plant Hatch RTYPE: CHAO2.004 U. S. Nuclear Reaulatorv Commission Dr. W. D. Travers, Regional Administrator Mr. C. Gratton, NRR Project Manager - Hatch Mr. D. S. Simpkins, Senior Resident Inspector-Hatch