ML17331B147

Virgil C. Summer, Unit 1 -Acceptance of Relief Request (RR-4-13), Use of Risk-Informed Process as an Alternative for the Selection of Class 1 and Class 2 Piping Welds

ML17331B147
Person / Time
Site:	Summer
Issue date:	11/21/2017
From:	Shawn Williams Plant Licensing Branch II
To:	Thompson B L South Carolina Electric & Gas Co
References
L-2017-LLR-0133
Download: ML17331B147 (3)

Text

1 NRR-DMPSPEm Resource From:Williams, Shawn Sent: Tuesday, November 21, 2017 5:02 AM To: THOMPSON, BRUCE L Cc: DALICK, SARA BETH

Subject:

Virgil C. Summer, Unit 1 - Acceptance of Relief Request (RR-4-13), Use of Risk-Informed Process as an Alternative for the Selection of Class 1 and Class 2 Piping Welds (EPID No. L-2017-LLR-0133)

Dear Mr. Thompson,

By letter dated October 30, 2017 (Agencywide Documents Access and Management Syst em (ADAMS) Accession No. ML17303B183), the South Carolina Electric & Gas Company submitted an alternative request for Virgil C. Summer Nuclear Plant, Unit 1. The alternative request is applicable for the Fourth Ten-Year lnservice Inspection Interval which started on January 1, 2014, and ends December 31, 2023. The proposed alternative requests the use of a risk-informed process as an alternative for the selection of Class 1 and Class 2 piping welds in lieu of the inspection and examination requirements specified by the American Society of Mechanical Engineers Boiler and Pressure Vessel Code (ASME Code) , Section Xl, Tables IWB-2500-1 and IWC-2500-1. The licensee submitted the request 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 purpose of this letter is to provide the results of NRC staff's acceptance review. 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 char acterization 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 alternative 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 staff's 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 staff's 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 300 hours0.00347 days <br />0.0833 hours <br />4.960317e-4 weeks <br />1.1415e-4 months <br /> to complete. The NRC staff expects to complete this review by August 15, 2018, as requested. 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 staff's initial review of the application and they could change, due to several factors including 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 at (301) 415-1009.

Shawn Williams, Senior Project Manager 2Plant Licensing Branch II-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-395 Hearing Identifier: NRR_DMPS Email Number: 2 Mail Envelope Properties (Shawn.Williams@nrc.gov20171121050100)

Subject:

Virgil C. Summer, Unit 1 - Acceptance of Relief Request (RR-4-13), Use of Risk-Informed Process as an Alternative for the Selection of Class 1 and Class 2 Piping Welds (EPID No. L-2017-LLR-0133)

Sent Date: 11/21/2017 5:01:40 AM Received Date: 11/21/2017 5:01:00 AM From: Williams, Shawn Created By: Shawn.Williams@nrc.gov

Recipients: "DALICK, SARA BETH" <SARA.DALICK@scana.com> Tracking Status: None "THOMPSON, BRUCE L" <BTHOMPSON@scana.com> Tracking Status: None

Post Office: Files Size Date & Time MESSAGE 3580 11/21/2017 5:01:00 AM Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date: Recipients Received: