ML19158A395

Verification Letter of the Approval Version of Tennessee Valley Authority Topical Report TVA Overall Basin Probable Maximum Precipitation and Local Intense Precipitation Analysis Calculation CDQ0000002016000041, Rev. 1

ML19158A395
Person / Time
Site:	Browns Ferry, Watts Bar, Sequoyah
Issue date:	07/03/2019
From:	Undine Shoop Plant Licensing Branch II
To:	James Shea Tennessee Valley Authority
Hon A
References
EPID L-2016-TOP-0011
Download: ML19158A395 (4)

Text

July 3, 2019 Mr. Joseph W. Shea Vice President, Nuclear Regulatory Affairs and Support Services Tennessee Valley Authority 1101 Market Street, LP 4A Chattanooga, TN 37402-2801

SUBJECT:

VERIFICATION LETTER OF THE APPROVAL VERSION OF TENNESSEE VALLEY AUTHORITY TOPICAL REPORT TVA OVERALL BASIN PROBABLE MAXIMUM PRECIPITATION AND LOCAL INTENSE PRECIPITATION ANALYSIS CALCULATION CDQ0000002016000041, REVISION 1 (EPID L-2016-TOP-0011)

Dear Mr. Shea:

By letter dated May 21, 2019 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML19155A047), Tennessee Valley Authority (TVA, the applicant) submitted an approval (-A) version of the subject Topical Report (TR), TVA Overall Basin Probable Maximum Precipitation and Local Intense Precipitation Analysis, Calculation CDQ0000002016000041, Revision 1, to the U.S. Nuclear Regulatory Commission (NRC) staff.

TVA has done so in accordance with our request to publish approval proprietary and non-proprietary versions of this TR, as detailed in the transmittal letter dated March 12, 2019, of the NRC staffs final safety evaluation (ADAMS Accession No. ML19010A212) for this TR.

The NRC staff has completed its review of the approval version of the TR. The NRC staff verified that TVA has met the requirements and determined that the submitted -A versions are acceptable for referencing in licensing applications for nuclear power plants to the extent specified and under the limitations and conditions delineated in the accepted versions of this TR.

J. Shea If you have any questions, please contact Andrew Hon at 301-415-8480.

Sincerely,

/RA/

Undine Shoop, Branch Chief Plant Licensing Branch II-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-259, 50-260, 50-296, 50-327, 50-328, 50-390, 50-391 RESOLUTION OF COMMENTS BY THE OFFICE OF NUCLEAR REACTOR REGULATION ON DRAFT SAFETY EVALUATION FOR TENNESSEE VALLEY AUTHORITY TOPICAL REPORT, TVA OVERALL BASIN PROBABLE MAXIMUM PRECIPITATION AND LOCAL INTENSE PRECIPITATION ANALYSIS CALCULATION CDQ0000002016000041, REVISION 1 This attachment provides the U.S. Nuclear Regulatory Commission (NRC) staffs review and disposition of the comments from Tennessee Valley Authority (TVA) on the draft safety evaluation(SE) for TVA Overall Basin Probable Maximum Precipitation and Local Intense Precipitation Analysis Calculation CDQ0000002016000041, Revision 1.

Page Line Proposed Change / Comment NRC Resolution of Proposed Change/Comment 1

21 Recommend deletion of major as used to refer to TVA dams. The term is not well defined.

The NRC staff understood the concern. The sentence in question was modified accordingly in the final SE.

2 60 Suggest inserting upstream to describe the watersheds depicted in Figure 2.

Figure 2 does not include portions of the watersheds contributing to backwater effects downstream of the nuclear plants.

The NRC staff understood the concern. The sentence in question was modified accordingly in the final SE.

ML19158A395

• by email OFFICE NRR/DORL/LPL2-2/PM NRR/DORL/LPL2-2/LA NRO/DLSE/RHM/BC*

NRR/DORL/LPL2-2/BC NAME AHon BClayton (JBurkhardt for) DBarnhurst UShoop DATE 06/07/19 06/25/19 06/10/19 07/03/19