ML21084A004

3/25/2021 E-mail, Acceptance Review Determination, Proposed License Amendment Request to Revise Shutdown Bank TS Requirements and Add Alternate Control Rod Position Monitoring Requirements

ML21084A004
Person / Time
Site:	Millstone
Issue date:	03/25/2021
From:	Richard Guzman NRC/NRR/DORL/LPL1
To:	Sinha S Dominion Energy Nuclear Connecticut
Guzman R
References
EPID L-2021-LLA-0023
Download: ML21084A004 (2)

Text

From: Guzman, Richard To: Shayan Sinha Cc: RidsNRRLIC109 Resource; Danna, James

Subject:

Millstone Power Station, Unit No. 3 - Acceptance Review Determination Re: Proposed LAR to Clarify Shutdown Bank TS Requirements and Add Alternate Control Rod Position Monitoring Requirements (EPID L-2021-LLA-0023)

Date: Thursday, March 25, 2021 6:46:07 AM Mr. Sinha, By letter dated February 22, 2021 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML21053A342), Dominion Energy Nuclear Connecticut, Inc. (the licensee) submitted a license amendment request (LAR) to revise the Technical Specifications (TSs) for Millstone Power Station, Unit No. 3. The proposed amendment would revise TS 3.1.3.2 to provide an alternative monitoring option for the condition where a maximum of one digital rod position indicator per bank is inoperable. Specifically, as an alternative to determining the position of the non-indicating rod(s) indirectly by the movable incore detectors at a frequency of once per 8 hours9.259259e-5 days <br />0.00222 hours <br />1.322751e-5 weeks <br />3.044e-6 months <br />, the change would allow rod position verification to be performed based on the occurrence of rod movement or power level change. This proposed revision is consistent with Technical Specification Task Force Traveler 547, Revision 1 (ADAMS Accession No. ML15365A610), and would provide alternate TS Actions to allow the position of the rod to be monitored by a means other than movable incore detectors. The proposed amendment would also revise TS 3.1.3.5 to replace shutdown "rods" with shutdown "banks," consistent with wording in the Standard TSs for Westinghouse Plants as provided in NUREG-1431, Revision 4 (ADAMS Accession No. ML12100A222). Finally, the proposed amendment would include administrative changes to revise the title of TS 3.1.3.6, to reflect that the requirements apply to control "banks," and modify TS 6.9.1.6.a and TS 6.9.1.6.b to cite the revised titles of TS 3.1.3.5 and TS 3.1.3.6.

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 licensing action. 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.

Consistent with Section 50.90 of Title 10 of the Code of Federal Regulations (10 CFR),

whenever a holder of an operating license under this part desires to amend the license, application for an amendment must be filed with the Commission fully describing the changes requested, and following, as far as applicable, the form prescribed for original applications. Section 50.34 of 10 CFR addresses the content of technical information required. This section stipulates that the submittal address the design and operating characteristics, unusual or novel design features, and principal safety considerations.

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 amendment 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 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 no later than March 2022. If there are emergent complexities or challenges in our review that would cause changes to the initial forecasted completion date (greater than a month) or significant changes in the forecasted hours (greater than 25%),

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, 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.

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Rich Guzman Sr. PM, Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation U.S. Nuclear Regulatory Commission Office: O-9C7 l Phone: (301) 415-1030 Richard.Guzman@nrc.gov