ML081750080

Technical Specifications (TS) Changes TS-431 and TS-418 - Extended Power Uprate (EPU) - Response to Round 15 Group 4 and Round 17 Request for Additional Information (RAI)

ML081750080
Person / Time
Site:	Browns Ferry
Issue date:	06/16/2008
From:	Langley D Tennessee Valley Authority
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
TAC MD5262, TAC MD5263, TAC MD5264, TVA-BFN-TS-418, TVA-BFN-TS-431
Download: ML081750080 (5)

Text

Tennessee Valley Authority, Post Office Box 2000, Decatur, Alabama 35609-2000 June 16, 2008 TVA-BFN-TS-418 TVA-B FN-TS-431 10 CFR 50.90 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Mail Stop OWFN, P1-35 Washington, D. C. 20555-0001 Gentlemen:

In the Matter of ) Docket Nos. 50-259 Tennessee Valley Authority ) 50-260 50-296 BROWNS FERRY NUCLEAR PLANT (BFN) - UNITS 1, 2, AND 3 - TECHNICAL SPECIFICATIONS (TS) CHANGES TS-431 AND TS-418 - EXTENDED POWER UPRATE (EPU) - RESPONSE TO ROUND 15 GROUP 4 AND ROUND 17 REQUESTS FOR ADDITIONAL INFORMATION (RAI) (TAC NOS. MD5262, MD5263, AND MD5264)

By letters dated June 28, 2004 and June 25, 2004 (ADAMS Accession Nos. ML041840109 and ML041840301), TVA submitted license amendment applications to the NRC for the EPU of BFN Unit 1 and BFN Units 2 and 3, respectively. The proposed amendments would change the operating licenses to increase the maximum authorized core thermal power level of each reactor by approximately 14% to 3952 megawatts.

On December 14, 2007, the NRC staff issued a Round 15 RAI (ML073450725) regarding the EPU license amendment requests. Previous responses to the Round 15 RAIs were provided in submittals dated January 31, 2008 (ML080380560), March 6, 2008, and April 4, 2008 (ML081010450). Additionally, on May 2, 2008, the NRC staff issued a Round 17 RAI (ML081280471) regarding the EPU license amendment requests. Enclosure 1 to this letter provides the remainder of the responses to the Round 15 RAIs, a revision to the response to Round 15 RAI EMCB.129/96, and the responses to the Round 17 RAls.

The steam dryer analyses for Units 1 and 2 have been re-performed as described in the response to RAI EMCB.180 in Enclosure 1. The associated analyses are provided in , CDI Report No.08-15P, "Stress Assessment of Browns Ferry Nuclear Unit 1 Steam Dryer with Tie-Bar Modifications," Enclosure 3, CDI Report No.08-04P, "Acoustic and Low Frequency Hydrodynamic Loads at CLTP Power Level on Browns Ferry Nuclear Unit 1 Steam Dryer to 250 Hz," Enclosure 4, CDI Report No.08-16P, "Stress Assessment of Browns Ferry Nuclear Unit 2 Steam Dryer with Tie-Bar Modifications," and Enclosure 5,

U.S. Nuclear Regulatory Commission Page 2 June 16, 2008 CDI Report No.08-05P, "Acoustic and Low Frequency Hydrodynamic Loads at CLTP Power Level on Browns Ferry Nuclear Unit 2 Steam Dryer to 250 Hz." Enclosure 6 provides calculation package 0006982.01, "Shell and Solid Sub-Model Finite Element Stress Comparison," discussed in the response to RAI EMCB.180.

Note that Enclosures 1, 2, 3, 4, and 5 contain information that Continuum Dynamics, Inc.

(CDI) considers to be proprietary in nature and subsequently, pursuant to 10 CFR 2.390(a)(4), requests that such information be withheld from public disclosure. Enclosures 7, 8, 9, 10, and 11 contain the redacted versions of the proprietary enclosures with the CDI proprietary material removed, which is suitable for public disclosure. Enclosure 12 provides affidavits from CDI supporting this request.

TVA has determined that the additional information provided by this letter does not affect the no significant hazards considerations associated with the proposed TS changes. The proposed TS changes still qualify for a categorical exclusion from environmental review pursuant to the provisions of 10 CFR 51.22(c)(9).

No new regulatory commitments are made in this submittal. If you have any questions regarding this letter, please contact me at (256)729-2636.

I declare under penalty of perjury that the foregoing is true and correct. Executed on this 1 6 th day of June, 2008.

Sincerely D. T. Langley Manager of Licensing and Industry Affairs

Enclosures:

1. Response to Round 15 Group 4 and Round 17 Requests for Additional Information (RAI) (proprietary version)

2. CDI Report No.08-15P, "Stress Assessment of Browns Ferry Nuclear Unit 1 Steam Dryer with Tie-Bar Modifications" (proprietary version)

3. CDI Report No.08-04P, "Acoustic and Low Frequency Hydrodynamic Loads at CLTP Power Level on Browns Ferry Nuclear Unit 1 Steam Dryer to 250 Hz" (proprietary version)

4. CDI Report No.08-16P, "Stress Assessment of Browns Ferry Nuclear Unit 2 Steam Dryer with Tie-Bar Modifications" (proprietary version)

5. CDI Report No.08-05P, "Acoustic and Low Frequency Hydrodynamic Loads at CLTP Power Level on Browns Ferry Nuclear Unit 2 Steam Dryer to 250 Hz" (proprietary Version)

U.S. Nuclear Regulatory Commission Page 3 June 16, 2008

6. Structural Integrity Associates, Inc. Calculation Package 0006982.301, "Shell and Solid Sub-Model Finite Element Stress Comparison"

7. Response to Round 15 Group 4 and Round17 Requests for Additional Information (RAI) (non-proprietary version)

8. CDI Report No. 08-15NP, "Stress Assessment of Browns Ferry Nuclear Unit 1 Steam Dryer with Tie-Bar Modifications" (non-proprietary version)

9. CDI Report No. 08-04NP, "Acoustic and Low Frequency Hydrodynamic Loads at CLTP Power Level on Browns Ferry Nuclear Unit 1 Steam Dryer to 250 Hz" (non-proprietary version)

10. CDI Report No. 08-16NP, "Stress Assessment of Browns Ferry Nuclear Unit 2 Steam Dryer with Tie-Bar Modifications" (non-proprietary version)

11. CDI Report No. 08-05NP, "Acoustic and Low Frequency Hydrodynamic Loads at CLTP Power Level on Browns Ferry Nuclear Unit 2 Steam Dryer to 250 Hz" (non-proprietary version)

12. CDI Affidavits

U.S. Nuclear Regulatory Commission Page 4 June 16, 2008 Enclosures cc (Enclosures):

State Health Officer Alabama State Department of Public Health RSA Tower - Administration Suite 1552 P.O. Box 303017 Montgomery, Alabama 36130-3017 Eva Brown, Project Manager U.S. Nuclear Regulatory Commission (MS 08G9)

One White Flint, North 11555 Rockville Pike Rockville, Maryland 20852-2739 Rebecca L. Nease, Branch Chief U.S. Nuclear Regulatory Commission Region II Sam Nunn Atlanta Federal Center 61 Forsyth Street, SW, Suite 23T85 Atlanta, Georgia 30303-8931 NRC Senior Resident Inspector Browns Ferry Nuclear Plant 10833 Shaw Road Athens, AL 35611-6970

U.S. Nuclear Regulatory Commission Page 5 June 16, 2008 DTL:JEE:DAH:DKR Enclosures cc (w/o Enclosures):

G. P. Arent, EQB 1B-WBN W. R. Campbell, Jr. LP 3R-C S. M. Douglas, POB 2C-BFN R. F. Marks, Jr., PAB 1C-BFN D. C. Matherly, BFT 2A-BFN L. E. Nicholson, BR 4X-C M. A. Purcell, LP 4K-C R. G. West, NAB 2A-BFN B. A. Wetzel, BR 4X-C S. A. Vance, WT 6A-K E. J. Vigluicci, ET 11A-K NSRB Support, LP 5M-C EDMS (with enclosures) WT CA-K S:\Licensing\Lic\Submit\Sub\Extended Power Uprate\EPU SD Schedule v06 13.doc