ML20021A082

NRR E-mail Capture - Acceptance Review for Clinton, Unit 1, I4R-02 - Alternative Requirements for Reactor Pressure Vessel Nozzle-to-Vessel Welds and Nozzle Inner Radius Section

ML20021A082
Person / Time
Site:	Clinton
Issue date:	01/16/2020
From:	Joel Wiebe Plant Licensing Branch III
To:	Nicely K Exelon Generation Co
References
Download: ML20021A082 (3)

Text

From: Wiebe, Joel Sent: Thursday, January 16, 2020 10:28 AM To: Nicely, Ken M.:(GenCo-Nuc) (ken.nicely@exeloncorp.com)

Subject:

Acceptance Review for Clinton, Unit 1, I4R Alternative Requirements for Reactor Pressure Vessel Nozzle-to-Vessel Welds and Nozzle Inner Radius Section Hi Ken, By letter dated December 16, 2019 (Agencywide Documents Access and Management System Accession No. ML19350C642), Exelon Generation Company, LLC submitted a proposed alternative (Request I4R-02) in accordance with 10 CFR 50.55a(z)(1) to examine a minimum of 25 percent of the nozzle-to-vessel welds and inner radii sections, including at least one nozzle from each system and nominal pipe size, in accordance with ASME Code Case N-702, "Alternative Requirements for Boiling Water Reactor (BWR) Nozzle Inner Radius and Nozzle-to-Shell Welds,Section XI, Division 1," dated February 20, 2004, on the basis that it will provide an acceptable level of quality and safety for the Clinton Power Station, Unit 1. The purpose of this e-mail is to provide the results of the U.S. Nuclear Regulatory Commission (NRC) staffs acceptance review of this proposed alternative. 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 application has any readily apparent information insufficiencies in its characterization of the regulatory requirements or the licensing basis of the plant. The acceptance review determination for other requests in the December 16, 2019, submittal will be provided by separate e-mail.

The NRC staff has reviewed the submittal and concluded 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 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. If additional information is needed, you will be advised by separate correspondence.

Based on the information provided in your submittal, the NRC staff has estimated that this request will take approximately 210 hours8.75 days <br />1.25 weeks <br />0.288 months <br /> to complete. The NRC staff expects to complete this review in approximately 12 months, which is December 2020. If there are emergent complexities or challenges in our review that would cause changes to the initial forecasted completion date or significant changes in the forecasted hours, the reasons for the changes, along with the new estimates, will be communicated during the routine interactions with the assigned project manager.

If you have any questions, please contact me at (301) 415-6606.

Joel S. Wiebe, Sr. Project Manager Plant Licensing Branch III-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation

Hearing Identifier: NRR_DRMA Email Number: 394 Mail Envelope Properties (BL0PR0901MB2449920CA027CB8C178C83518B360)

Subject:

Acceptance Review for Clinton, Unit 1, I4R Alternative Requirements for Reactor Pressure Vessel Nozzle-to-Vessel Welds and Nozzle Inner Radius Section Sent Date: 1/16/2020 10:27:46 AM Received Date: 1/16/2020 10:27:00 AM From: Wiebe, Joel Created By: Joel.Wiebe@nrc.gov Recipients:

"Nicely, Ken M.:(GenCo-Nuc) (ken.nicely@exeloncorp.com)" <ken.nicely@exeloncorp.com>

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