ML21286A590

Acceptance for Review of Proposed Alternative ISI-05-017 for Examinations of Examination Category C-B Steam Generator

ML21286A590
Person / Time
Site:	Calvert Cliffs
Issue date:	10/05/2021
From:	Mayer A Plant Licensing Branch III
To:	Tom Loomis Exelon Generation Co, Exelon Nuclear
Mayer A
References
EPID L-2021-LLR-0079
Download: ML21286A590 (2)

Text

From: Mayer, Annie To: Loomis, Thomas R:(Exelon Nuclear)

Cc: Mayer, Annie

Subject:

Acceptance for Review of Proposed Alternative ISI-05-017 for Examinations of Examination Category C-B Steam Generator Nozzle-to-Shell Welds and Nozzle Inside Radius Sections (EPID L-2021-LLR-0079)

Date: Tuesday, October 05, 2021 11:27:00 PM

Tom, By letter dated September 1, 2021 (Agencywide Documents Access and Management System Accession No. ML21244A328), Exelon Generation Company, LLC submitted an alternative request for Calvert Cliffs Nuclear Power Plant, Units 1 and 2. The proposed alternatives for Braidwood Station, Units 1 and 2; Bryon Station, Units 1 and 2; and R.E.

Ginna Nuclear Power Plant included in the submittal are being reviewed separately. The proposed alternative would extend the frequency of steam generator nozzle-to-shell and nozzle inside radius sections volumetric and surface examinations for the remainder of the currently licensed operating periods. 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.

Pursuant to Sections 50.55a(z)(1) and 50.55 a(z)(2) of Title 10 of the Code of Federal Regulations (10 CFR), the applicant shall demonstrate that the proposed alternatives would provide an acceptable level of quality and safety, or that compliance with the specified requirements of Section 50.55a would result in hardship or unusual difficulty without a compensating increase in the level of quality or safety.

The NRC staff has reviewed your application 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 alternative. 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 this licensing request will take approximately 200 hours0.00231 days <br />0.0556 hours <br />3.306878e-4 weeks <br />7.61e-5 months <br /> to complete. The NRC staff expects to complete this review by August 1, 2022. 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 could change, due to several factors including requests for additional information and/or 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 me.

Docket Nos. 50 317 and 50 318 Thank you, Andrea (Annie) Mayer Technical Assistant NRR/DORL 301-415-1081 andrea.mayer@nrc.gov