HNP-17-073, Supplemental Information for License Amendment Request Regarding Spent Fuel Storage Pool Criticality Analyses

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Supplemental Information for License Amendment Request Regarding Spent Fuel Storage Pool Criticality Analyses
ML17257A245
Person / Time
Site: Harris Duke Energy icon.png
Issue date: 09/14/2017
From: Bradley Jones
Duke Energy Progress
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
HNP-17-073
Download: ML17257A245 (6)


Text

Bentley K. Jones Director, Organizational Effectiveness Harris Nuclear Plant 5413 Shearon Harris Road New Hill, NC 27562-9300 10 CFR 50.90 September 14, 2017 Serial: HNP-17-073 ATTN: Document Control Desk U.S. Nuclear Regulatory Commission Washington, DC 20555-0001 Shearon Harris Nuclear Power Plant, Unit 1 Docket No. 50-400/Renewed License No. NPF-63

Subject:

Supplemental Information for License Amendment Request Regarding Spent Fuel Storage Pool Criticality Analyses Ladies and Gentlemen:

By letter dated June 28, 2017 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML17193B165), Duke Energy Progress, LLC (Duke Energy),

requested an amendment to the Technical Specifications (TSs) of Renewed Facility Operating License No. NPF-63 for Shearon Harris Nuclear Power Plant, Unit 1 (HNP). The proposed license amendment would revise the TS for fuel storage criticality to account for the use of Metamic neutron absorbing spent fuel pool rack inserts and soluble boron for the purpose of criticality control in the Boiling Water Reactor (BWR) storage racks that currently credit Boraflex.

The Nuclear Regulatory Commission (NRC) staff has reviewed the application and concluded that the information delineated in the enclosure to their letter dated August 30, 2017 (ADAMS Accession No. ML17241A018), is necessary to enable the staff to 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. In response to the request for supplemental information, HNP is submitting the enclosed additional information to support acceptance review of the proposed amendment.

The content of this supplemental correspondence does not change the No Significant Hazards Consideration provided in the original submittal.

No regulatory commitments are contained in this letter.

In accordance with 10 CFR 50.91(b), HNP is providing the state of North Carolina with a copy of this supplemental correspondence.

Should you have any questions regarding this submittal, please contact Jeffery Robertson, HNP Regulatory Affairs Manager, at (919) 362-3137.

U.S. Nuclear Regulatory Commission Page 2 Serial: HNP-17-073 I declare under penalty of perjury that the foregoing is true and correct.

Executed on September 14, 2017.

Sincerely, Bentley K. Jones cc: J. Zeiler, NRC Sr. Resident Inspector, HNP W. L. Cox, III, Section Chief N.C. DHSR M. Barillas, NRC Project Manager, HNP C. Haney, NRC Regional Administrator, Region II

U.S. Nuclear Regulatory Commission Serial: HNP-17-073 Enclosure HNP-17-073 SHEARON HARRIS NUCLEAR POWER PLANT, UNIT NO. 1 DOCKET NO. 50-400 / RENEWED LICENSE NO. NPF-63 SUPPLEMENTAL INFORMATION FOR LICENSE AMENDMENT REQUEST REGARDING SPENT FUEL STORAGE POOL CRITICALITY ANALYSES Enclosure (3 pages including cover)

U.S. Nuclear Regulatory Commission Page 2 of 3 Serial: HNP-17-073 Enclosure

1.0 INTRODUCTION

By letter dated June 28, 2017 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML17193B165), Duke Energy Progress, LLC (Duke Energy),

requested an amendment to the Technical Specifications (TSs) of Renewed Facility Operating License No. NPF-63 for Shearon Harris Nuclear Power Plant, Unit 1 (HNP). The proposed license amendment would revise the TS for fuel storage criticality to account for the use of Metamic neutron absorbing spent fuel pool rack inserts and soluble boron for the purpose of criticality control in the Boiling Water Reactor (BWR) storage racks that currently credit Boraflex.

During the Nuclear Regulatory Commission (NRC) staffs acceptance review of the requested license amendment, the NRC staff found the application contained an insufficiency related to the description of the applicable regulatory requirements for the proposed changes. As such, supplemental information has been requested to enable the NRC staff to begin its detailed review. Duke Energys response is provided herein with the requested information discussing how the applicable regulatory requirements will continue to be met.

2.0 INSUFFICIENCY Title 10 of the Code of Federal Regulations (10 CFR), Part 50, Section 50.90, Application for amendment of license, construction permit, or early site permit, states that license amendment requests (LARs) fully describe the changes desired. Section 50.36 of 10 CFR is the governing regulation for TSs and contains the regulatory requirements for TS categories, including: Safety Limits, Limiting Conditions for Operation, Surveillance Requirements, Design Features, and Administrative Controls.

Section 4.0 of the LAR contains discussions regarding whether or not the regulatory requirements of 10 CFR 50.68, 10 CFR Part 50 Appendix A, General Design Criterion (GDC) 61 and GDC 62 would continue to be met. However, Section 4.0 contains no discussion of whether or not the regulatory requirements of 10 CFR 50.36 will continue to be met, given the proposed changes to TSs. As such, it has been requested that the LAR be supplemented by providing a full description of the applicable regulatory requirements for the proposed changes, including 10 CFR 50.36, and describe how these requirements will continue to be met.

3.0 DUKE ENERGY RESPONSE 10 CFR 50.36, Technical Specifications, paragraph (c)(4), Design Features, states that design features to be included are those features of the facility such as materials of construction and geometric arrangements, which, if altered or modified, would have a significant effect on safety and are not covered by the other TS categories (i.e., Safety Limits, Limiting Conditions for Operation, Surveillance Requirements). The LAR requests changes to TS 5.6.1.3, BWR Storage Racks in Pools A and B, to reflect the respective design features of the two BWR rack types utilized in these pools, including adjusted requirements for the racks that will credit the use of neutron absorbing Metamic inserts and soluble boron for criticality control in place of the existing credited Boraflex. The incorporation of these adjusted requirements for the BWR storage racks in Pools A and B and the addition of the new figures to address the orientation

U.S. Nuclear Regulatory Commission Page 3 of 3 Serial: HNP-17-073 Enclosure of the rack inserts in the pools will ensure that the HNP fuel storage design features remain in compliance with the requirements of 10 CFR 50.36(c)(4).

As noted above, Section 4.0 of the LAR contains discussion pertaining to the continuance in meeting the regulatory requirements of 10 CFR 50.68, and 10 CFR Part 50 Appendix A, General Design Criterion (GDC) 61 and GDC 62. Therefore, they are not included in this supplement.