ML18102A081

Acceptance of License Amendment Request Regarding Degraded Voltage Protection

ML18102A081
Person / Time
Site:	Hatch
Issue date:	04/11/2018
From:	Hall J Plant Licensing Branch II
To:	Mcelroy G Southern Nuclear Operating Co
Hall J, NRR/DORL/LPL2-1, 415-4032
References
EPID L-2018-LLA0069
Download: ML18102A081 (2)

Text

From: Hall, Randy To: Ken McElroy Cc: Joyce, Ryan M. (RMJOYCE@southernco.com); "jamiemco@southernco.com"

Subject:

Hatch Nuclear Plant, Units 1 and 2 - Acceptance of License Amendment Request Regarding Degraded Voltage Protection (EPID: L-2018-LLA-0069)

Date: Wednesday, April 11, 2018 10:14:00 AM April 11, 2018 Mr. G. Ken McElroy Licensing Manager Southern Nuclear Operating Company

Dear Ken,

By letter dated March 9, 2018 (Agencywide Documents Access and Management System Accession No. ML18071A363), the Southern Nuclear Operating Company, Inc. (SNC, the licensee) submitted a license amendment request for the Edwin I. Hatch Nuclear Plant, Units 1 and 2 (HNP). The proposed amendment would revise the HNP Unit 1 and Unit 2 Technical Specifications (TS) requirements of TS 3.3.8.1, "Loss of Power (LOP)

Instrumentation" to modify the instrument allowable values for the Unit 2 4.16 kV emergency bus degraded voltage instrumentation and delete the annunciation requirements for the Unit 2 4.16 kV emergency bus undervoltage instrumentation. In addition, the proposed amendment would revise Unit 2 License Condition 2.C(3)(i) to clarify its intent.

The purpose of this email is to provide the results of the U.S. Nuclear Regulatory Commission (NRC) staffs acceptance review of this amendment 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.

Consistent with Section 50.90 of Title 10 of the Code of Federal Regulations (10 CFR), an amendment to the license (including the TSs) must fully describe 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 450 hours18.75 days <br />2.679 weeks <br />0.616 months <br /> to complete. The NRC staff expects to complete this review in approximately 9 months, by December 31, 2018, consistent with the date requested in your submittal. 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, unanticipated addition of scope to the review, and review by NRC advisory committees or hearing-related activities.

If you have any questions, please contact me at (301) 4154032.

Sincerely, Randy Hall, Senior Project Manager Plant Licensing Branch II-1 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation USNRC (301) 415-4032 Randy.Hall@nrc.gov