ML15163A057

NRR E-mail Capture - Browns Ferry NFPA 805 LAR

ML15163A057
Person / Time
Site:	Browns Ferry
Issue date:	06/12/2015
From:	Farideh Saba Plant Licensing Branch II
To:	Szabo C, Gerald Williams Tennessee Valley Authority
References
Download: ML15163A057 (3)

Text

NRR-PMDAPEm Resource From: Saba, Farideh Sent: Friday, June 12, 2015 8:04 AM To: 'Szabo, Clinton William'; 'Williams, Gordon Robert' Cc: 'Schrull, Edward Dustin'; Robinson, Jay

Subject:

Browns Ferry NFPA 805 LAR Importance: High Gordon and Clint, The NRC staff has identified another implementation item that should be added to the final Attachment S (license conditions). This is based on the TVAs commitment in the letter dated May 16, 2013, which is also discussed in TVAs June 13, 2014 letter, to revise the performance monitoring program that monitors the RHR heat exchanger performance. Please see TVAs RAI response in June 13, 2014, letter, below.

The revised performance monitoring program has not been developed at this time. Commitment 2 in Enclosure 2 to TVA letter dated May 16, 2013, "Response to NRC Request to Supplement License Amendment Request to Adopt NFPA 805 Performance-Based Standard for Fire Protection for Light Water Reactor Electric Generating Plants for the Browns Ferry Nuclear Plant, Units 1, 2, and 3 (TAC Nos. MF1185, MF1186, and MF1187)" (ADAMS Accession No. ML13141A291), provides the TVA commitment to revise the program that monitors the RHR heat exchanger performance. The commitment states that "TVA will revise the program that monitors BFN Residual Heat Removal (RHR) heat exchanger performance for consistency with the assumptions of the NFPA 805 Net Positive Suction Head (NPSH), Containment Parameters, and AREVA Fuel peak centerline temperature (PCT)

Analysis calculation related to the RHR heat exchanger k-factor within 6 months following NRC approval of the NFPA 805 amendment request." TVA intends to include, as requirements in the program, periodic heat exchanger inspections and heat exchanger performance testing requirements to ensure fouling factor assumptions and tube plugging assumptions in the NFPA 805 containment analysis remain valid.

This item should be incorporated into the TVAs LAR Attachment S that will be tied to the new NFPA 805 license condition, since the staffs approval of NFPA 805 specific to Attachment X relies on this commitment.

The attachment S should add an implementation item that states: Revise the program that monitors BFN Residual Heat Removal (RHR) heat exchanger performance for consistency with the assumptions of the NFPA 805 Net Positive Suction Head (NPSH), Containment Parameters, and AREVA Fuel peak centerline temperature (PCT) Analysis calculation related to the RHR heat exchanger k-factor. This is directly from TVAs May 16, 2013 submittal.

In addition, Item 37 in Table S-3 of Attachment S states:

Revise design output to ensure interior epoxy floor finishes meet the Class II requirements and interior carpet floor finishes meet the Class I requirements.

In order to meet NFPA 805, epoxy floor finishes need to meet Class I requirements, not Class II. Therefore, Item 37 should state:

Revise design output to ensure interior epoxy floor finishes meet the Class I requirements and interior carpet floor finishes meet the Class I requirements.

Thanks, Farideh 1

Farideh E. Saba, P.E.

Senior Project Manager NRC/ADRO/NRR/DORL 301-415-1447 Mail Stop O-8G9A Farideh.Saba@NRC.GOV 2

Hearing Identifier: NRR_PMDA Email Number: 2150 Mail Envelope Properties (36CF286628C20846A68047F246323309014B251386BE)

Subject:

Browns Ferry NFPA 805 LAR Sent Date: 6/12/2015 8:04:09 AM Received Date: 6/12/2015 8:04:00 AM From: Saba, Farideh Created By: Farideh.Saba@nrc.gov Recipients:

"'Schrull, Edward Dustin'" <edschrull@tva.gov>

Tracking Status: None "Robinson, Jay" <Jay.Robinson@nrc.gov>

Tracking Status: None

"'Szabo, Clinton William'" <cwszabo@tva.gov>

Tracking Status: None

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

Tracking Status: None Post Office: HQCLSTR02.nrc.gov Files Size Date & Time MESSAGE 3096 6/12/2015 8:04:00 AM Options Priority: High Return Notification: No Reply Requested: Yes Sensitivity: Normal Expiration Date:

Recipients Received: