ML14077A212

NRR E-mail Capture - MF3340 Browns Ferry 2 - Review of 10 CFR 50 Appendix H Status Update - RAIs

ML14077A212
Person / Time
Site:	Browns Ferry
Issue date:	03/18/2014
From:	Farideh Saba Division of Operating Reactor Licensing
To:	Gerald Williams Tennessee Valley Authority
References
MF3340
Download: ML14077A212 (3)

Text

NRR-PMDAPEm Resource From: Saba, Farideh Sent: Tuesday, March 18, 2014 8:47 AM To: 'Williams, Gordon Robert (grwilliams1@tva.gov)'

Subject:

MF3340 BROWNS FERRY 2 - Review of 10 CFR 50 Appendix H Status Update - RAIs Attachments: BFN-2 App. H Request RAIs.docx Importance: High

Gordon, The attached document contains the NRCs RAIs associated with review of 10 CFR 50 Appendix H Status Update for Browns Ferry Unit 2 (TAC No. MF3340). Per your email dated 03/13/14, a conference call is not necessary. As we agreed, please provide TVA responses to these RAIs by April 16, 2014.

Thanks, Farideh Farideh E. Saba, P.E.

Senior Project Manager NRC/ADRO/NRR/DORL 301-415-1447 Mail Stop O-8G9A Farideh.Saba@NRC.GOV 1

Hearing Identifier: NRR_PMDA Email Number: 1169 Mail Envelope Properties (36CF286628C20846A68047F246323309FEAA1C9B22)

Subject:

MF3340 BROWNS FERRY 2 - Review of 10 CFR 50 Appendix H Status Update - RAIs Sent Date: 3/18/2014 8:46:47 AM Received Date: 3/18/2014 8:46:00 AM From: Saba, Farideh Created By: Farideh.Saba@nrc.gov Recipients:

"'Williams, Gordon Robert (grwilliams1@tva.gov)'" <grwilliams1@tva.gov>

Tracking Status: None Post Office: HQCLSTR02.nrc.gov Files Size Date & Time MESSAGE 544 3/18/2014 8:46:00 AM BFN-2 App. H Request RAIs.docx 31089 Options Priority: High Return Notification: No Reply Requested: Yes Sensitivity: Normal Expiration Date:

Recipients Received: ZZZ

REQUEST FOR ADDITIONAL INFORMATION REGARDING TENNESSEE VALLEY AUTHORITYS 10 CFR 50 APPENDIX H STATUS UPDATE FOR BROWNS FERRY NUCLEAR PLANT, UNIT 2 DOCKET NO. 50-260 (TAC NO. MF3340)

The Nuclear Regulatory Commission (NRC) staff has reviewed the information provided by Tennessee Valley Authority (TVA, the licensee) for Browns Ferry Nuclear Plant, Unit 2 (BFN-2) in its letter dated December 27, 2013 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML14008A108), and has determined that additional information is necessary to complete the review of TVAs Status Update for BFN-2 for Title 10 of the Code of Federal Regulations (10 CFR), Part 50, Domestic Licensing of Production and Utilization Facilities, Appendix H, Reactor Vessel Material Surveillance Program Requirements (10 CFR 50 App. H).

Based on the staffs review of TVAs letter, please provide responses that address the following requests:

RAI 1

TVAs letter states that the pressure-temperature (P-T) limits curves contained in the BFN-2, Technical Specifications (TS), Figures 3.4.9-1 and 3.4.9-2 are non-conservative. Provide the following information:

a. Provide the details of the evaluation performed to demonstrate that the BFN-2 P-T limits curves are non-conservative.

b. Provide an evaluation of the amount of non-conservatism in the BFN-2 P-T limits curves.

RAI 2

TVAs letter states that the non-conservative P-T limits curves are being treated as a degraded condition and that TVA has established compensatory measures to ensure that the BFN-2 reactor vessel is maintained within acceptable limits. Provide the following information:

a. Provide the acceptable limits for the BFN-2 reactor vessel that are being referred to and their bases.

b. Provide the details and bases of the compensatory measures established to ensure that the limits provided in response to Item 2a are maintained.

c. Provide an assessment demonstrating the adequacy of the compensatory measures implemented by TVA for BFN-2 until such time as a TVA License Amendment Request can be submitted to and approved by the NRC.

ENCLOSURE