NG-09-0645, Response to Request for Additional Information Regarding Section 2.5 of the License Renewal Application

Response to Request for Additional Information Regarding Section 2.5 of the License Renewal Application

ML092510452
Person / Time
Site:	Duane Arnold
Issue date:	09/03/2009
From:	Costanzo C NextEra Energy Duane Arnold
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
NG-09-0645, TAC MD9769
Download: ML092510452 (3)

Text

9.! 4 NExTera ENERIGY02 DUANE ARNOLD September 3, 2009 NG-09-0645 10 CFR 54 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Duane Arnold Energy Center Docket 50-331 License No. DPR-49 Response to Request for Additional Information Regarding Section 2.5 of the Duane Arnold Enerqy Center License Renewal Application

References:

1. Letter, Richard L. Anderson (FPL Energy Duane Arnold, LLC) to Document Control Desk (USNRC), "Duane Arnold Energy Center Application for Renewed Operating License (TSCR-109)," dated September 30, 2008, NG-08-0713 (ML082980623)

2. Letter, Richard L. Anderson (FPL Energy Duane Arnold, LLC) to Document Control Desk (USNRC), "License Renewal Application, Supplement 1: Changes Resulting from Issues Raised in the Review Status of the License Renewal Application for the Duane Arnold Energy Center," dated January 23, 2009, NG-09-0059 (ML090280418)

3. Letter, Maurice Heath (USNRC) to Richard L. Anderson (FPL Energy Duane Arnold, LLC), "Request for Additional Information for the Review of the Duane Arnold Energy Center License Renewal Application - Section 2.5 (TAC No. MD9769)," dated August 7, 2009 (ML091980178)

By Reference 1, FPL Energy Duane Arnold, LLC submitted an application for a renewed Operating License (LRA) for the Duane Arnold Energy Center. Reference 2 provided Supplement 1 to the application. By Reference 3 the U.S. Nuclear Regulatory Commission (NRC) Staff requested additional information regarding Section 2.5 of the LRA.

The enclosure to this letter contains the NextEra Energy Duane Arnold, LLC, (f/k/a FPL Energy Duane Arnold, LLC) responses to the Staff's request for additional information.

This letter contains no new commitments or changes to existing commitments.

If you have any questions or require additional information, please contact Mr. Kenneth Putnam at (319) 851-7238.

NextEra Energy Duane Arnold, LLC, 3277 DAEC Road, Palo, IA 52324

Document Control Desk NG-09-0645 Page 2 I declare under penalty of perjury that the foregoing is true and correct.

Executed on September 3, 2009.

Christopher R. Costanzo Vice President, Duane Arnold Energy Center NextEra Energy Duane Arnold, LLC

Enclosure:

DAEC Response to NRC Request for Additional Information Regarding LRA Section 2.5 cc: Administrator, Region Ill, USNRC Project Manager, DAEC, USNRC Senior Resident Inspector, DAEC, USNRC License Renewal Project Manager, USNRC License Renewal Inspection Team Lead, Region III, USNRC M. Rasmusson (State of Iowa)

NextEra Energy Duane Arnold, LLC, 3277 DAEC Road, Palo, IA 52324

Enclosure to NG-09-0645 DAEC Response to NRC Request for Additional Information Regarding LRA Section 2.5 RAI 2.5-1 The Duane Arnold License Renewal Application states that the scoping and screening methodology follows the approach recommended in NEI 95-10, "Industry Guideline for Implementing the Requirements of 10 CFR Part 54 -The License Renewal Rule,"

Appendix B, which indicates that elements, resistance temperature detectors (RTDs),

sensors, thermocouples and transducers should be included in the list of components/

commodity groups subject to aging management review if a pressure boundary is applicable. Provide justification why these components are not included in Section 2.5 of the License Renewal Application.

DAEC Response to RAI 2.5-1 The intended function of pressure boundary for instrumentation is addressed as part of the mechanical scoping and screening process. Instrumentation with a pressure boundary application was included in the mechanical aging management review and is managed by mechanical aging management programs. For additional information on the treatment of instrumentation pressure boundaries in LRA Section 2 and 3 tables, see the NextEra Energy letter NG-09-0644, dated September 3, 2009, Response to Request for Additional Information Regarding Section 2.3 of the Duane Arnold Energy Center License Renewal Application.

The electrical intended functions are active functions. Therefore, the electrical aspects of the instrumentation addressed in Section 2.5 screen out as not being subject to aging management review.

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