ML19295C834

Acceptance Review Determination (E-mail 10/22/19) Alternative Request RR-05-03 Extension of ASME Code Case N-770-2 RCP Nozzle DM Butt Welds

ML19295C834
Person / Time
Site:	Millstone
Issue date:	10/22/2019
From:	Richard Guzman Plant Licensing Branch 1
To:	Sinha S Dominion Energy Nuclear Connecticut
Guzman R
References
EPID L-2019-LLR-0095
Download: ML19295C834 (2)

Text

From: Guzman, Richard To: "Shayan Sinha" Cc: RidsNRRLIC109 Resource

Subject:

Millstone Unit 2 - Acceptance Review Determination: Alternative Request RR-05-03 Extension of ASME Code Case N-770-2 RCP Nozzle DM Butt Welds (EPID: L-2019-LLR-0095]

Date: Tuesday, October 22, 2019 6:58:02 AM

Shayan, By letter dated September 24, 2019 (ADAMS Accession No. ML19275D252), Dominion Energy Nuclear Connecticut, Inc. (DENC) submitted a proposed inservice inspection alternative request (RR-05-03) for Millstone Power Station, Unit No. 2 to allow the volumetric examination frequency of American Society of Mechanical Engineers (ASME)

Boiler and Pressure Vessel Code Case N-770-2, Inspection Item B for the reactor coolant pump inlet and outlet nozzle dissimilar metal butt welds containing Alloy 82/182 to be extended, on a one-time basis, from the required frequency of "not to exceed seven years" to a proposed nominal frequency of 7.5 calendar years.

The purpose of this e-mail is to provide the results of the NRC staffs acceptance review of the subject alternative request. 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 proposed amendment 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 licensing action will take approximately 120 hours5 days <br />0.714 weeks <br />0.164 months <br /> to complete. The NRC staff expects to complete this review by April 2020 (i.e., approximately 7 months). 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.

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Richard Guzman Sr. PM, Division Operator Reactor Licensing Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Office: O9C-7 l Phone: (301) 415-1030 Richard.Guzman@nrc.gov