RBG-46960, Supplement to Request for Alternative - Implementation of a Risk-Informed Inservice Inspection Program Based on ASME Code Case N-716 (RBS-ISI-013)

Supplement to Request for Alternative - Implementation of a Risk-Informed Inservice Inspection Program Based on ASME Code Case N-716 (RBS-ISI-013)

ML092720459
Person / Time
Site:	River Bend
Issue date:	09/24/2009
From:	Lorfing D Entergy Operations
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
RBG-46960
Download: ML092720459 (5)

Text

v=EfEnt fr,4y River Bend Station 5485 U.S. Highway 61 N St. Francisville, LA 70775 Tel 225-381-4157 David N. Lorfing Manager, Licensing RBG-46960 September 24, 2009 U.S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555

SUBJECT:

Supplement to Request for Alternative - Implementation of a Risk-Informed Inservice Inspection Program Based on ASME Code Case N-716 (RBS-ISI-013)

River Bend Station, Unit 1 Docket No. 50-458 License No. NPF-47 Reference 1. Entergy Letter to NRC dated June 16, 2009, Request for Alternative -

Implementation of a Risk-Informed Inservice Inspection Program Based on ASME Code Case N-716 (RBS-ISI-013 / RBG 46922)

2. Entergy Letter to NRC dated June 16, 2009, Request to Extend the Second ASME Inservice Inspection Interval (RBG-46923)

3. Entergy Letter to NRC dated August 21, 2009, Withdrawal of Request for Alternative RBS- ISI-012

Dear Sir or Madam:

On June 16, 2009, Entergy Operations, Inc. (Entergy) submitted a request to implement a risk-informed Inservice Inspection (RI ISI) program based on the methodology of American Society of Mechanical Engineers (ASME) Code Case N-716, as documented in the attachment to Request for Alternative RBS-ISI-013, Reference 1.

On June 16, 2009, Entergy also submitted a request to further extend the third period of the second ASME Inservice Inspection Interval, Reference 2, RBS-ISI-012. To coordinate the expected approval of the RI-ISI program, Reference 1, with the extension request, Reference 2, the RI-ISI request included a request to implement the approved RI-ISI beginning with the third period of the second ISI interval to cover the remaining weld examinations that were not performed during the second interval. The third period of the second ISI interval was previously extended by RBS-ISI-005 as approved by NRC on May 17, 2007 (TAC No.

MD3442).

On August 21, 2009, Entergy withdrew the request to further extend the third period of the second interval, Reference 3. As a result of this withdrawal the need to coordinate Reference 2 with Reference 1 is no longer necessary. The second ISI interval scope will be completed as previously approved by the end of Refuel Outage 15 in the fall of 2009.

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RBG-46960 Page 2 of 3 Therefore, Entergy requests to implement a Risk-Informed Inservice Inspection Program Based on ASME Code Case N-716 upon approval. This approval is expected to be during the first period of the third ISI interval.

The Attachment to this letter contains a list of the impacts the withdrawal of the additional extension request upon the RI-ISI request. These impacts are conservative in that; the scope of the examinations for the third period of the second interval will be in accordance with the current ISI program and exceed the examination scope requirements of the proposed RI-ISI program.

The changes identified in this letter do not affect the conclusions of the No Significant Hazards Evaluation.

This information does not include new commitments.

If you have any questions or require additional information, please contact David Lorfing, Manager, Licensing at (225) 381-4157.

Sincerely, Manager, Licensing 1 River Bend Station -nit DNL/bmb Attachment cc: Regional Administrator U. S. Nuclear Regulatory Commission Region IV 612 E. Lamar Blvd., Suite 400 Arlington, TX 76011-4125 NRC Senior Resident Inspector P. O. Box 1050 St. Francisville, LA 70775 U. S. Nuclear Regulatory Commission' Attn: Mr. Alan B. Wang MS 0-7 D1 Washington, DC 20555-0001

RBG-46960 Page 3 of 3 Mr. Jeffrey P. Meyers Louisiana Department of Environmental Quality Office of Environmental Compliance Attn. OEC - ERSD P. O. Box 4312 Baton Rouge, LA 70821-4312 I

ATTACHMENT TO RBG-46960 SUPPLEMENT TO REQUEST FOR ALTERNATIVE RBS-ISI-013 FOR RIVER BEND STATION

Attachment to RBG-46960 Page 1 of 1 ENTERGY OPERATIONS, INC.

RIVER BEND STATION SUPPLEMENT TO REQUEST FOR ALTERNATIVE RBS-ISI-013 FOR RIVER BEND STATION As discussed in the cover letter, the withdrawal of the request to further extend the third period of the second inspection interval (Reference 3, RBS-ISI-12) removes the need to coordinate the implementation of the request to implement a Risk' Informed Inservice Inspection (RI-ISI) program.

Discussion of this coordination was contained in the cover letter and four additional locations in Attachment 1 of the request to implement a RI-ISI program (Reference 1). The table below identifies each location and the effect of the Withdrawal of the extension of the previous inspection interval.

Location Adjustment Cover Letter Page 1, third paragraph; implementation no longer requested to be in the second interval. Implementation will be upon approval. Page 2, second and third paragraphs; implementation no longer requested to Section 1 be in the second interval. Implementation will be upon approval. Page 8, first paragraph; examination locations will be determined by the Section 3.3 current ISI program. Examination of locations determined under the RI-ISI (RISB) will begin after approval of the RI-ISI program. Page 13, first paragraph of section; the RI-ISI (RISB) program will be Section 4 implemented upon approval by the NRC. Page 14, second and third paragraphs of section; as a result of the Section 5 withdrawal of the extension request, RBS-ISI-12, the second paragraph no longer applies to the request to implement a RI-ISI program.

The third paragraph discusses a commitment in the extension request (RBS-ISI-012). This request was withdrawn and therefore no longer applies.

Examinations will be performed under a conventional ISI program until approval of the requested RI-ISI.