ML21012A044

1/12/2021 E-mail Acceptance Review Determination, Alternative Requests RR-05-04 and IR-4-02

ML21012A044
Person / Time
Site:	Millstone
Issue date:	01/12/2021
From:	Richard Guzman NRC/NRR/DORL/LPL1
To:	Sinha S Dominion Energy Nuclear Connecticut
Guzman R
References
EPID L-2020-LLR-0158
Download: ML21012A044 (2)

Text

From: Guzman, Richard To: Shayan.Sinha@dominionenergy.com Cc: RidsNRRLIC109 Resource; Danna, James; Jeffry A Langan; Kathryn H Barret

Subject:

Millstone Unit Nos. 2 and 3 - Acceptance Review Determination: Alternative Requests RR-05-04 and IR-4-02, Use of Alternative Pressure/Flow Testing Requirements for SW System Supply Piping [EPID: L-2020-LLR-0158]

Date: Tuesday, January 12, 2021 8:33:49 AM Mr. Sinha, By letter dated December 17, 2020 (ADAMS Accession No. ML20352A334), Dominion Energy Nuclear Connecticut, Inc. (DENC) submitted Relief Requests RR-05-04 and IR-4-02 pursuant to 10 CFR 50.55a(z)(2) for meeting certain examination and testing requirements of Section XI of the 2013 American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code for Millstone Power Station, Unit No. 2 and Unit No. 3, respectively.

Specifically, DENC requests approval of alternative methods for performing the VT-2 visual examination as required by ASME Section XI, Table IWD-2500-1 and IWD-5220 for the piping segments of the service water system located in the confined space of the intake structure bays.

The purpose of this e-mail is to provide the results of the Nuclear Regulatory Commission (NRC) staffs acceptance review of these relief requests. The acceptance review was performed to determine if there is sufficient technical information in scope and depth to allow the NRC staff to complete its detailed technical review. The acceptance review is also intended to identify whether the submittal has any readily apparent information insufficiencies in its characterization of the regulatory requirements or the licensing basis of the plant.

The NRC staff has reviewed DENCs submittal and concludes that it does provide technical information in sufficient detail to enable the NRC staff to complete its detailed technical review and make an independent assessment regarding the acceptability of the request in terms of regulatory requirements and the protection of public health and safety and the environment. Given the lesser scope and depth of the acceptance review as compared to the detailed technical review, there may be instances in which issues that impact the NRC staffs ability to complete the detailed technical review are identified despite completion of an adequate acceptance review. You will be advised of any further information needed to support the NRC staffs detailed technical review by separate correspondence.

Based on the information provided in your submittal, the NRC staff has estimated that the review of the relief requests will take approximately 80 hours9.259259e-4 days <br />0.0222 hours <br />1.322751e-4 weeks <br />3.044e-5 months <br /> to complete. The NRC staff expects to complete this review by January 2022. If there are emergent complexities or challenges in our review that would cause changes to the initial forecasted completion date (greater than a month) or significant changes in the forecasted hours (greater than 25%),

the reasons for the changes, along with the new estimates, will be communicated during the routine interactions with the assigned project manager. These estimates are based on the NRC staffs initial review of the application and they could change, due to several factors including requests for additional information and unanticipated addition of scope to the review. Additional delay may occur if the submittal is provided to the NRC in advance or in parallel with industry program initiatives or pilot applications.

Please contact me if you have any questions. A copy of this email will be made publicly available in ADAMS.

Thanks, 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