ML17265A252

NRR E-mail Capture - Request for Additional Information - Oconee Nuclear Station, LAR 2015-08, CAC Nos. MF7417-MF7419

ML17265A252
Person / Time
Site:	Oconee
Issue date:	09/22/2017
From:	Audrey Klett Plant Licensing Branch II
To:	Wasik C Duke Energy Carolinas
References
MF7417, MF7418, MF7419
Download: ML17265A252 (2)

Text

NRR-PMDAPEm Resource From: Klett, Audrey Sent: Friday, September 22, 2017 9:28 AM To: Wasik, Christopher J; Shingleton, Boyd; Meixell, Bob

Subject:

Request for Additional Information - Oconee Nuclear Station, LAR 2015-08, CAC Nos.

MF7417-MF7419 Hi Chris, By letter ON-2016-021 dated February 26, 2016, as supplemented by letters ONS-2017-007 and ONS-2017-042 dated January 30, and June 1, 2017, respectively, Duke Energy Carolinas, LLC (the licensee) submitted License Amendment Request No. 2015-08 and proposed changes to the Technical Specifications for Oconee Nuclear Station, Units 1, 2, and 3 to support planned maintenance for the Keowee Hydro Units. During its review of the licensees request, NRC staff determined that it needed more information to complete its review.

By email dated September 13, 2017, NRC staff provided the licensee a draft of its request for additional information (RAI). By email from Mr. Boyd Shingleton dated September 14, 2017, the licensee stated that it did not need a clarification call and that it can respond to the request on or by October 13, 2017. Therefore, the staff requests the licensee to respond to the RAI below, which is numbered sequentially from the RAI dated December 21, 2016 (ADAMS Accession No. ML17150A002), and includes typographical corrections to the draft version, on or by October 13, 2017.

RAI 4

In its letter dated January 30, 2017 (ADAMS Accession No. ML17032A347), the licensee responded to RAI 2 and indicated that plant modifications would be in place by the end of 2018. During routine discussions with the NRC licensing project manager throughout August 2017, Duke Energy has indicated that the plant modifications described in the licensees response to RAI 2 might not be completed before the first scheduled stator replacement. In its letter dated February 3, 2014 (ADAMS Accession No. ML14035A453), the licensee indicated that it monitors its off-site power sources at a frequency of once every 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />. Therefore, the staff requests the licensee to provide the following:

A. a description of the most recent power cable inspections and replacements in the switchyard including the results of the power cable inspections and replacements, and B. a description of what additional compensatory measures, controls, or actions (e.g., increased frequency of roving watches, administrative controls, work restrictions and durations, etc.) would be performed to explicitly monitor off-site power sources, minimize impacts to off-site power sources, and protect plant equipment essential for safe shutdown during the period for when the stator replacement and associated maintenance is being performed.

Thank you, Audrey Klett Project Manager NRR/DORL/LPLII-1 301-415-0489 1

Hearing Identifier: NRR_PMDA Email Number: 3740 Mail Envelope Properties (Audrey.Klett@nrc.gov20170922092800)

Subject:

Request for Additional Information - Oconee Nuclear Station, LAR 2015-08, CAC Nos. MF7417-MF7419 Sent Date: 9/22/2017 9:28:05 AM Received Date: 9/22/2017 9:28:00 AM From: Klett, Audrey Created By: Audrey.Klett@nrc.gov Recipients:

"Wasik, Christopher J" <Christopher.Wasik@duke-energy.com>

Tracking Status: None "Shingleton, Boyd" <Boyd.Shingleton@duke-energy.com>

Tracking Status: None "Meixell, Bob" <Bob.Meixell@duke-energy.com>

Tracking Status: None Post Office:

Files Size Date & Time MESSAGE 2530 9/22/2017 9:28:00 AM Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date:

Recipients Received: