ML19196A213

NRR E-mail Capture - (External_Sender) State Notification of Amendments to Catawba Nuclear Station, Units 1 and 2 - Extend Completion Time for Diesel Generator

ML19196A213
Person / Time
Site:	Catawba
Issue date:	07/11/2019
From:	Nair A State of SC
To:	Michael Mahoney Plant Licensing Branch II
References
L-2017-LLA-0256, L-2017-LLA-0257, MF9667, MF9668, MF9671, MF9672
Download: ML19196A213 (4)

Text

1 NRR-DRMAPEm Resource From:

Nair, Anuradha <naira@dhec.sc.gov>

Sent:

Thursday, July 11, 2019 11:12 AM To:

Mahoney, Michael

Subject:

[External_Sender] Re: State Notification of Amendments to Catawba Nuclear Station, Units 1 and 2 - Extend Completion Time for Diesel Generator No comments.

Thanks Sent from my iPhone On Jul 11, 2019, at 5:55 AM, Mahoney, Michael <Michael.Mahoney@nrc.gov> wrote:

• • • Caution. This is an EXTERNAL email. DO NOT open attachments or click links from unknown senders or unexpected email. ***

Mrs. Nair, We are near completion of amendments for the Catawba Nuclear Station (Catawba), Units 1 and 2, to revise their Technical Specifications (TS). Specifically, The amendments revise TS, 3.8.1, AC [Alternating Current] Sources - Operating, to extend the Completion Time (CT) of Condition B for an inoperable emergency diesel generator (DG) from 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> to 14 days. To support this request, Catawba will add a supplemental power source (i.e., two supplemental diesel generators (SDGs)) with the capability to power any emergency bus. The affected SDGs will have the capacity to bring the affected unit to cold shutdown. The supplemental AC power source will be referred to as the Emergency Supplemental Power Source (ESPS).

Additionally, TS 3.8.1 is being revised to reflect two new Limiting Conditions for Operation (LCOs) that are necessary to assure operability of the power sources from the opposite unit, which support necessary shared systems. The first new item reflects a qualified circuit between the offsite transmission network and the opposite units Onsite Essential Auxiliary Power System that is necessary to supply power to the Nuclear Service Water System (NSWS),

Control Room Area Ventilation System (CRAVS), Control Room Area Chilled Water System (CRACWS) and Auxiliary Building Filtered Ventilation Exhaust System (ABFVES) (i.e., shared systems). The second new item reflects a DG from the opposite unit that is necessary to supply power to the NSWS, CRAVS, CRACWS and ABFVES. Corresponding Conditions, Required Actions, and CTs are also being proposed for these new LCOs.

The application is dated May 2, 2017 as supplemented by letters dated July 20 and November 21, 2017, October 8, 2018, March 7, April 8, and July 10, 2019 (ADAMS Accession Nos. ML17122A116, ML17201Q132, ML17325A588, ML18281A010, ML19066A354, ML19099A046, and ML19191A177, respectively).

The no significant hazards consideration determination was noticed in the Federal Register on February 27, 2017 (82 FR 8521), attached.

Duke Energy combined the Catawba incoming license amendment requests with a similar change for the McGuire Nuclear Station. The NRC issued separated the reviews and the McGuire amendments were issued on June 28, 2019.

2 Please respond if you have any or no comments.

Thanks Mike Michael Mahoney McGuire and Catawba Project Manager, Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Desk: (301)-415-3867 Email: Michael.Mahoney@NRC.GOV

Hearing Identifier:

NRR_DRMA Email Number:

115 Mail Envelope Properties (4E149905-2312-4425-8434-EE4A49E3B9C0)

Subject:

[External_Sender] Re: State Notification of Amendments to Catawba Nuclear Station, Units 1 and 2 - Extend Completion Time for Diesel Generator Sent Date:

7/11/2019 11:12:11 AM Received Date:

7/11/2019 11:13:13 AM From:

Nair, Anuradha Created By:

naira@dhec.sc.gov Recipients:

"Mahoney, Michael" <Michael.Mahoney@nrc.gov>

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