ML16168A026

Summary Report for the April 19 to 21, 2016 Audit in Support of Replacement Steam Dryer Review Associated to Extended Power Uprate License Amendment Request

ML16168A026
Person / Time
Site:	Browns Ferry
Issue date:	06/23/2016
From:	Farideh Saba Plant Licensing Branch II
To:	James Shea Tennessee Valley Authority
Saba F, NRR/DORL/LPL2-2, 415-1447
References
CAC MF6741, CAC MF6742, CAC MF6743
Download: ML16168A026 (7)

Text

UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 Mr. Joseph W. Shea Vice President, Nuclear Licensing Tennessee Valley Authority 1101 Market Street, LP 3R-C Chattanooga, TN 37402-2801 June 23, 2016

SUBJECT:

BROWNS FERRY NUCLEAR PLANT, UNITS 1, 2, AND 3 -

SUMMARY

REPORT FOR THE APRIL 19-21, 2016, AUDIT IN SUPPORT OF REPLACEMENT STEAM DRYER REVIEW ASSOCIATED WITH EXTENDED POWER UPRATE LICENSE AMENDMENT REQUEST (CAC NOS. MF6741, MF6742, AND MF6743)

Dear Mr. Shea:

By letter dated September 21, 2015, as supplemented by letters dated November 13, December 15 (2 letters), and December 18, 2015, Tennessee Valley Authority (TVA, the licensee) submitted a license amendment request (LAR) for the Browns Ferry Nuclear Plant, Units 1, 2, and 3. The proposed amendment would increase the authorized maximum steady-state reactor core power level for each unit from 3,458 megawatts thermal (MWt) to 3,952 MWt. This LAR represents an increase of approximately 20 percent above the original licensed thermal power level of 3,293 MWt, and an increase of approximately 14.3 percent above the current licensed thermal power level of 3,458 MWt.

On March 21, 2016, the U.S. Nuclear Regulatory Commission (NRC) staff forwarded, by electronic mail (email), a draft request for additional information (RAI) to TVA. On March 31, 2016, the NRC staff held a conference call to provide the licensee with an opportunity to clarify any portion of the draft RAI and discuss the timeframe for which TV A may provide the requested information. Subsequently, the NRC staff determined an audit would be the most effective approach to establish an understanding of the draft RAls to allow the NRC staff to issue finalized RAls and for the licensee to provide quality and timely responses.

The audit was held at the EXCEL Services Corporation facility in Rockville, Maryland, from April 19 to 21, 2016. The audit plan dated April 11, 2016, is available in ADAMS under Accession No. ML16085A301. A list of audit attendees is provided in Enclosure 1.

During the audit, the licensee provided to the NRC staff a package that included the NRC staff's draft RAls that were emailed to TVA on March 21, 2016, TVA's draft responses and the supplemental information that would support completion of the NRC staff's review. The NRC staff and its contractors reviewed the information provided in the package and discussed it with the TVA staff and the General Electric Hitachi (TVA contractor) staff.

As the result of this audit, the NRC staff could finalize the draft RAls. The NRC's letter dated June 3, 2016 (ADAMS Accession No. ML16144A645), documents the finalized RAls associated with the replacement steam dryers and the agreed upon RAI response dates. The licensee was

able to identify RAI responses that would be revised to provide additional clarifications. to this letter provides the audit summary report.

If you have any questions, please contact me at (301) 415-1447 or Farideh.Saba@nrc.gov.

Docket Nos. 50-259, 50-260, and 50-296

Enclosures:

1. List of Attendees

2. Summary Report for Audit cc w/encls: Distribution via Listserv Sincerely, Farideh E. Saba, Senior Project Manager Plant Licensing 11-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation

LIST OF ATTENDEES APRIL 19-21, 2016, AUDIT OF TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT, UNITS 1, 2, AND 3 REPLACEMENT STEAM DRYER REVIEW ASSOCIATED TO EXTENDED POWER UPRATE LICENSE AMENDMENT REQUEST Name Affiliation Entrance 04/19 04/20 04/21 Exit Siva Lingam NRC x

Ben Beasley NRC x

x Chakrapani NRC x

x x

x x

Basavaraiu Michael Breach NRC x

x x

x Yong Li NRC x

x Farideh Saba NRC x

x x

x x

Samir Ziada NRC Contractor x

x x

Vik Shah NRC Contractor x

x x

Steve Hambric NRC Contractor x

x x

Gerard Doyle TVA x

x x

x x

Dan Green TVA x

x x

x x

Pete Donahue TVA x

x x

x x

Eric Frevold TVA x

x x

x x

Gordon Williams TVA x

x x

x Tao Wu GEH x

x x

x x

Dan Pappone GEH x

x x

x x

Dan Sampson GEH x

x x

x x

SUMMARY

REPORT FOR APRIL 19 - 21, 2016. AUDIT AT EXCEL FACILITY IN ROCKVILLE. MARYLAND REVIEW OF EXTENDED POWER UPRATE LICENSE AMENDMENT REQUEST TENNESSEE VALLEY AUTHORITY BROWNS FERRY NUCLEAR PLANT. UNITS 1, 2. AND 3 DOCKET NOS. 50-259, 50-260, AND 50-296 By letter dated September 21, 2015 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML15282A152), as supplemented by letters dated November 13, December 15 (2 letters), and December 18, 2015 (ADAMS Accession Nos. ML15317A361, ML15351A097, ML15351A113, and ML15355A413, respectively), Tennessee Valley Authority (TVA, the licensee) submitted a license amendment request (LAR) for Browns Ferry Nuclear Plant (BFN), Units 1, 2, and 3. The proposed amendment would increase the authorized maximum steady-state reactor core power level for each unit from 3,458 megawatt thermal (MWt) to 3,952 MWt. This LAR represents an increase of approximately 20 percent above the original licensed thermal power level of 3,293 MWt, and an increase of approximately 14.3 percent above the current licensed thermal power level of 3,458 MWt.

On March 21, 2016, the U.S. Nuclear Regulatory Commission (NRC) staff forwarded, by electronic mail (email), a draft request for additional information (RAI) to TVA. On March 31, 2016, the NRC staff held a conference call to provide the licensee with an opportunity to clarify any portion of the draft RAI and discuss the timeframe for which TVA may provide the requested information. Subsequently, the NRC staff determined an audit would be the most effective approach to establish an understanding of the draft RAls to allow the NRC staff to issue finalized RAls and for the licensee to provide quality and timely responses.

The audit was held at the EXCEL Services Corporation facility in Rockville, Maryland, from April 19 to 21, 2016. The audit plan dated April 11, 2016, is available in ADAMS under Accession No. ML16085A301. A list of attendees in the entrance meeting, audit days, and exit meeting was shown in Enclosure 1. The following NRC staff and NRC contractors participated in the audit discussions.

Area of Review Assigned Auditor Project Manager Farideh Saba (NRC)

Lead Technical Reviewer Chakrapani Basavaraju (NRC)

Technical Reviewer Michael Breach (NRC)

Technical Reviewer Vikram Shah (NRC Contractor from Argonne National Laboratory)

Technical Reviewer Stephen Hambric (NRC Contractor from Pennsylvania State University)

Technical Reviewer Samir Ziada (NRC Contractor from McMaster University, Canada)

The audit team held an entrance meeting on April 19, 2016. At this meeting, following the introduction, TVA and its contractor, General Electric Hitachi (GEH), provided a short history about steam dryers at Browns Ferry and TVA plans for replacing the existing steam dryers with new ones (aka, replacement steam dryers), which TVA plans to install at the site after approval of the EPU LAR.

During the audit, the licensee presented to the NRC staff, a package that included the NRC staff's 42 draft RAls that were emailed to TV A on March 21, 2016, draft responses to all draft RAls, except RAI 30 that was not supported by GEH, and the supplemental information that would support the NRC staff's review. The NRC staff and its contractors reviewed the information provided in the package and discussed it with the TVA and GEH staff. There was open communication throughout the audit and it was conducted in accordance with the audit plan with no known deviation. From the 41 draft RAls that were discussed during the audit, the NRC staff and TVA staff agreed on deleting 2.5 RAls (2 RAls and part of another one), but adding 1.5 RAls (one new RAI and a new part to another RAI). It was also agreed to keep the RAI numbering sequence as it was with the draft RAls. Also, the NRC staff agreed to revise 7 RAls to add clarification to the questions. The TVA staff found out that the licensee should provide additional clarification or perform additional work so that it can provide a better response to 25 of 41 draft RAls. Specifically, TVA determined that it needs more time to be able to provide a resolution to 5 of the staff's draft RAls pertinent to the association with the safety relief valve loading.

At the conclusion of the audit, the NRC staff conducted an exit meeting on April 21, 2016. At this meeting, the staff provided a summary of audit results in each subject area defined in the audit scope. The NRC staff and TVA staff both agreed that the audit helped the licensee to better focus on the scope of NRC's draft RAls. The audit also provided the NRC staff with a better understanding of TVA's submittals and approach for responding to the NRC staff's RAls.

Additionally, NRC staff utilized results of the audit to finalize and issue the RAls, which are documented in the NRC letter dated June 3, 2016 (ADAMS Accession Nos. ML16144A645 (pubic) and ML16144A643 (non-public)).

Subsequent to the audit, TVA requested a clarification conference with the NRC staff to discuss some of the RAls associated with safety relief valve loading (EMCB-RAls 14, 15, 16, and 18).

Further, the NRC staff and the TVA staff determined to discuss these RAls in a meeting at the NRC Headquarters. Currently, a closed meeting, due to the proprietary nature of the information, is scheduled on June 23, 2016. The meeting summary will be issued within 30 days from June 23, 2016.

M L16168A026

• B

• 1 iyema1 OFFICE DORULPLll-2/PM DORULPLll-2/LA DE/EMCB/BC(A)*

DORULPLll-2/BC(A) DORULPLll-2/PM NAME FSaba BClayton Yli TOrf FSaba DATE 06/21/16 6/21/16 06/21/16 6/22/16 6/23/16