ML20028C195

1/21/2020 E-mail from R.Guzman to S. Sinha Setup of Online Reference Portal for LAR to Revise TS 3.8.1.1

ML20028C195
Person / Time
Site:	Millstone
Issue date:	01/21/2020
From:	Richard Guzman NRC/NRR/DORL/LPL1
To:	Sinha S Dominion Energy Nuclear Connecticut
Guzman R
References
EPID L-2019-LLA-0177
Download: ML20028C195 (2)

Text

From: Guzman, Richard To: Shayan Sinha

Subject:

Millstone Power Station, Unit No. 2 - Setup of Online Reference Portal for License Amendment Request to Revise TS 3.8.1.1 "AC Sources-Operating" (EPID L-2019-LLA-0177)

Date: Tuesday, January 21, 2020 9:14:47 AM Mr. Sinha, By letter dated August 14,2019 (Agencywide Documents Access and Management System Accession No. ML19234A111), as supplemented by letter dated October 22, 2019, Dominion Energy Nuclear Connecticut, Inc., (DENC, the licensee) submitted a license amendment request (LAR) for the Millstone Power Station Unit 2 (MPS2). The proposed LAR would revise Technical Specification (TS) 3.8.1.1, "A. C. Sources - Operating," to add a permanent Required Action (a.3) that provides an option to extend the allowed outage time (AOT) from 72 hours8.333333e-4 days <br />0.02 hours <br />1.190476e-4 weeks <br />2.7396e-5 months <br /> to 10 days for one inoperable offsite circuit. In addition, the licensee proposes a one-time exception to the new proposed Required Action a.3 that would extend the AOT to 35 days for one inoperable offsite circuit.

Use of the 35-day AOT would allow replacement of the MPS3 'A' RSST, its associated equipment, and other 345 kV south bus switchyard components that are nearing the end of their dependable service life. This work is planned to take place no later than the fall 2023 outage (3R22) for Millstone Power Station, Unit 3 (MPS3).

To improve the efficiency of the U.S. Nuclear Regulatory Commission (NRC) reviews, the licensees representatives and the NRC staff have discussed the use of an audit using an online reference portal that would allow the NRC staff limited read-only access to the basis documents and other reference materials cited in the applications. The staff plans to initially conduct a desk audit to review the documentation provided on the portal. The online reference portal would allow the NRC staff to audit basis documents to determine whether the information included in the documents is necessary to reach a safety conclusion on the application.

Documents identified as necessary for analysis of the application will be identified by the NRC staff. The licensee will be formally requested to submit those documents on the NRC docket. Use of the online reference portal is acceptable, as long as the following conditions are met:

• the online reference portal will be password-protected and passwords will be assigned to those directly involved in the review on a need-to-know basis;

• the online reference portal will be sufficiently secure to prevent staff from printing, saving, or downloading any documents; and

• conditions of use of the online reference portal will be displayed on the login screen and will require concurrence by each user.

The NRC staff would like to request that the portal be populated with the following documents:

• Risk Analysis files related to (1) Uncertainty and Sensitivity Studies, (2) Fault Trees, and (3) Importance Measures

This is the initial list identified by the NRC staff. The staff may request additional documents during the review, which will be transmitted to you by e-mail. This audit will potentially obviate the need for an onsite audit and potential requests for additional information.

Please provide NRC staff access to the portal and send me the information needed to access the portal, such as user name and password, as soon as possible. The conditions associated with the online reference portal must be maintained throughout the duration of the review process. Please reply with your confirmation that the DENC agrees to the terms and conditions set forth in this communication.

Should you have any questions regarding the audit and online reference portal, please contact me at 301-415-1030 or by e-mail to Richard.Guzman@nrc.gov.

Thank you,

~~~~~~~~~~~~

Rich Guzman Sr. PM, Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Office: O-9C7 l Phone: (301) 415-1030 Richard.Guzman@nrc.gov