ML22105A070

NRR E-mail Capture - Acceptance Review - Diablo Canyon Request to Revise Technical Specifications to Adopt TSTF 577, Revised Frequencies for Steam Generator Tube Inspections

ML22105A070
Person / Time
Site:	Diablo Canyon
Issue date:	04/15/2022
From:	Samson Lee NRC/NRR/DORL/LPL4
To:	Richardson M Pacific Gas & Electric Co
References
L-2022-LLA-0038
Download: ML22105A070 (3)

Text

From:

Lee, Samson Sent:

Friday, April 15, 2022 10:43 AM To:

Richardson, Michael Cc:

Soenen, Philippe

Subject:

Acceptance Review - Diablo Canyon Request to Revise Technical Specifications to Adopt TSTF 577, Revised Frequencies for Steam Generator Tube Inspections (EPID: L-2022-LLA-0038)

By letter dated March 10, 2022 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML22069B122), Pacific Gas and Electric Company requested changes to the technical specifications (TSs) for Diablo Canyon Power Plant, Units 1 and 2. The proposed changes would revise the Steam Generator (SG) Tube Integrity, the Steam Generator (SG) Tube Inspection Program, and the Steam Generator Tube Inspection Report TSs based on Technical Specifications Task Force (TSTF) Traveler TSTF-577, Revision 1, Revised Frequencies for Steam Generator Tube Inspections (ADAMS Accession No. ML21060B434). The purpose of this e-mail is to provide the results of the U.S. Nuclear Regulatory Commission (NRC) staffs acceptance review of this 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 application 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 complete its detailed technical review and make an independent assessment regarding the acceptability of the proposed change 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 licensing request will take approximately 180 hours0.00208 days <br />0.05 hours <br />2.97619e-4 weeks <br />6.849e-5 months <br /> to complete. The NRC staff expects to complete this review by October 15, 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 complexity and uniqueness of the review, requests for additional information, unanticipated addition of scope to the review, and review by NRC advisory committees or hearing-related activities. 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.

Samson Lee Diablo Canyon Project Manager

Plant Licensing Branch 4 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation 301-415-3168 Docket Nos. 50-275 and 50-323

Hearing Identifier:

NRR_DRMA Email Number:

1599 Mail Envelope Properties (SA1PR09MB865315B75CD59D287B2BB2A99AEE9)

Subject:

Acceptance Review - Diablo Canyon Request to Revise Technical Specifications to Adopt TSTF 577, Revised Frequencies for Steam Generator Tube Inspections (EPID:

L-2022-LLA-0038)

Sent Date:

4/15/2022 10:43:01 AM Received Date:

4/15/2022 10:42:00 AM From:

Lee, Samson Created By:

Samson.Lee@nrc.gov Recipients:

"Soenen, Philippe" <PNS3@pge.com>

Tracking Status: None "Richardson, Michael" <MJRm@pge.com>

Tracking Status: None Post Office:

SA1PR09MB8653.namprd09.prod.outlook.com Files Size Date & Time MESSAGE 3201 4/15/2022 10:42:00 AM Options Priority:

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