ML21231A164

Acceptance of Five Requested Licensing Actions Code Cases OMN-22, OMN-24, OMN-26, OMN-28, and Paragraph ISTB-3540(b)

ML21231A164
Person / Time
Site:	Oconee
Issue date:	08/19/2021
From:	Shawn Williams Plant Licensing Branch II
To:	Zaremba A Duke Energy Carolinas
Williams S
References
L-2021-LLR-0051, L-2021-LLR-0052, L-2021-LLR-0053, L-2021-LLR-0054, L-2021-LLR-0055
Download: ML21231A164 (2)

Text

From: Williams, Shawn To: Zaremba, Arthur H.

Cc: Vaughan, Jordan L

Subject:

Oconee Nuclear Station, Units 1, 2, and 3 - Acceptance of Five Requested Licensing Actions RE: Code Cases OMN-22, OMN-24, OMN-26, OMN-28, and Paragraph ISTB-3540(b)

Date: Thursday, August 19, 2021 11:11:41 AM Mr. Zaremba, By letter dated July 29, 2021 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML21210A341), as supplemented by letter dated August 19, 2021 (ADAMS Accession No. ML21231A069), Duke Energy Carolinas, LLC, (the licensee) submitted the following five requests for Oconee Nuclear Station, Units 1, 2, and 3, for use during the sixth ten-year inservice testing program, which begins on July 1, 2022.

1. Request to Utilize American Society of Mechanical Engineers (ASME) Operation and Maintenance of Nuclear Power Plants (OM) Code Case OMN-22 (ON-GRP-OMN-22)

2. Request to Utilize ASME OM Code Case OMN-24 (ON-PRV-OMN-24)

3. Request to Utilize ASME OM Code Case OMN-26 (ON-MOV-OMN-26)

4. Request to Utilize ASME OM Code Case OMN-28 (ON-RPI-OMN-28)

5. Relief from ASME OM Code, Paragraph ISTB-3540(b), (ON-SRP-HPI-03)

The licensee submitted the requests to utilize Code Cases OMN-22, OMN-24, OMN-26, and OMN-28, pursuant to 10 CFR Section 50.55a(z)(1), which requires the applicant to demonstrate that the proposed alternative would provide an acceptable level of quality and safety. The licensee submitted the request for relief from ASME OM code, Paragraph ISTB-3540(b), pursuant to 10 CFR 50.55a(f)(6)(i), due to impracticality.

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 begin its detailed technical review. The acceptance review is also intended to identify whether the request 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 your application and concluded that it does provide technical information in sufficient detail to enable the NRC staff to begin 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 in 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 provided the below estimated hours to complete the requests. The NRC staff expects to complete the five requests by the requested date of June 16, 2022.

1. Request to Utilize Code Case OMN-22: 100 hours0.00116 days <br />0.0278 hours <br />1.653439e-4 weeks <br />3.805e-5 months <br /> (EPID L-2021-LLR-0051).

2. Request to Utilize Code Case OMN-24: 140 hours0.00162 days <br />0.0389 hours <br />2.314815e-4 weeks <br />5.327e-5 months <br /> (EPID L-2021-LLR-0052).

3. Request to Utilize Code Case OMN-26: 100 hours0.00116 days <br />0.0278 hours <br />1.653439e-4 weeks <br />3.805e-5 months <br /> (EPID L-2021-LLR-0053).

4. Request to Utilize Code Case OMN-28: 140 hours0.00162 days <br />0.0389 hours <br />2.314815e-4 weeks <br />5.327e-5 months <br /> (EPID L-2021-LLR-0054).

5. Relief From Paragraph ISTB-3540(b): 100 hours0.00116 days <br />0.0278 hours <br />1.653439e-4 weeks <br />3.805e-5 months <br /> (EPID L-2021-LLR-0055).

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. These estimates are based on the NRC staffs initial review of the application and they can 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.

If you have any questions, please contact Shawn Williams at (301) 415-1009 or Shawn.Williams@nrc.gov.

Shawn Williams, Senior Project Manager Plant Licensing Branch II-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-269, 50-270, 50-287 cc: Listserv