IR 07200038/2021001

Construction of an Independent Spent Fuel Storage Installation Report 07200038/2021001

ML21120A063
Person / Time
Site:	Mcguire, McGuire
Issue date:	04/30/2021
From:	Binoy Desai NRC/RGN-II/DRS/EB3
To:	Teresa Ray Duke Energy Carolinas
References
EPID I-2021-001-0150 IR 2021001
Download: ML21120A063 (6)

Text

April 30, 2021

SUBJECT:

MCGUIRE NUCLEAR STATION - CONSTRUCTION OF AN INDEPENDENT SPENT FUEL STORAGE INSTALLATION REPORT 07200038/2021001

Dear Mr. Ray:

On April 7, 2021, the U.S. Nuclear Regulatory Commission (NRC) completed an inspection at McGuire Nuclear Station and discussed the results of this inspection with you and other members of your staff. The results of this inspection are documented in the enclosed report.

No findings or violations of more than minor significance were identified during this inspection.

This letter, its enclosure, and your response (if any) will be made available for public inspection and copying at http://www.nrc.gov/reading-rm/adams.html and at the NRC Public Document Room in accordance with Title 10 of the Code of Federal Regulations 2.390, Public Inspections, Exemptions, Requests for Withholding.

Sincerely,

/RA/

Binoy B. Desai, Chief Engineering Branch 3 Division of Reactor Safety Docket No. 07200038

Enclosure:

As stated

Inspection Report

Docket Number: 07200038 License Number: NPF-9 and NPF-17 Report Number: 07200038/2021001 Enterprise Identifier: I-2021-001-0150 Licensee: Duke Energy Carolinas, LLC Facility: McGuire Nuclear Station Location: Huntersville, North Carolina Inspection Dates: February 15, 2021 to April 7, 2021 Inspectors: P. Cooper, Senior Reactor Inspector Approved By: Binoy B. Desai, Chief Engineering Branch 3 Division of Reactor Safety Enclosure

SUMMARY The U.S. Nuclear Regulatory Commission (NRC) continued monitoring the licensees performance by conducting inspections of activities related to McGuire Nuclear Stations (MNS)

pre-operational activities of dry cask storage of spent fuel from February 15, 2021 to April 7, 2021. The NRCs program for overseeing the safe operation of dry storage of spent fuel at an Independent Spent Fuel Storage Installations (ISFSI) is described in Inspection Manual Chapter 2690, Inspection Program for Dry Storage of Spent Reactor Fuel at Independent Spent Fuel Storage Installations and for 10 CFR Part 71 Transportation Packagings.

List of Findings and Violations No findings or violations of more than minor significance were identified.

Additional Tracking Items None.

INSPECTION SCOPES Inspections were conducted using the appropriate portions of the inspection procedures (IPs) in effect at the beginning of the inspection unless otherwise noted. Currently approved IPs with their attached revision histories are located on the public website at http://www.nrc.gov/reading-rm/doc-collections/insp-manual/inspection-procedure/index.html. Samples were declared complete when the IP requirements most appropriate to the inspection activity were met consistent with Inspection Manual Chapter (IMC) 2690, Inspection Program for Storage of Spent Reactor Fuel and Reactor-Related Greater-than-Class C Waste at Independent Spent Fuel Storage Installations (ISFSI) and for 10 CFR Part 71 Transportation Packagings." The inspectors reviewed selected procedures and records, observed activities, and interviewed personnel to assess licensee performance and compliance with Commission rules and regulations, license conditions, site procedures, and standards.

60853 - ON-SITE FABRICATION OF COMPONENTS AND CONSTRUCTION ON AN ISFSI On-Site Fabrication of Components and Construction on an ISFSI (1 Sample)

(1) On February 15 - April 7, 2021 the inspector conducted a review of licensee and vendor activities in preparation for the construction of a concrete storage pad, identified as Pad 9, to store 6 MAGNASTOR systems. The inspectors verified that activities related to the ISFSI have been properly incorporated into the existing licensee programs by reviewing the following activities:

a. ISFSI pad design The inspector verified that the licensee completed evaluations which establish that the ISFSI storage pads and areas have been designed to adequately support the static and dynamic loads of the stored dry storage systems (DSS), considering potential amplification of earthquakes through soil-structure interaction, and soil liquefaction potential or other soil instability due to vibratory ground motion by reviewing the following calculations;

• MCC-1140.00-00-0010, "Concrete Slab (foundation) Analysis for Dry Cask Storage"

• MCC-1140.00-00-0091, "Soil-Structure Interaction Analysis for ISFSI Pad 9" b. ISFSI pad construction The inspector verified the ISFSI storage pad was constructed in accordance with the DSS Certificate of Compliance (CoC) and reviewed licensee controls that ensured no adverse impact on site operations or technical specifications (TS) by performing the following activities;

• The inspector walked down the construction area of the ISFSI pad to verify the formwork and rebar placement complied to licensee-approved drawings, specifications,

• The inspectors observed the placement of the ISFSI slab, and observed tests for concrete slump, air content, temperature measurements, and the collection/preparation of cylinder samples for compression tests, to verify that

the work was implemented in accordance with the approved specifications and procedures,

• The inspector verified that the pad was being finished according to approved specifications and code requirements,

• Following completion of the 7-day and 28-day compression tests by the independent laboratory, the inspector reviewed the results to verify that the acceptance criteria were met.

INSPECTION RESULTS No findings were identified.

EXIT MEETINGS AND DEBRIEFS The inspectors verified no proprietary information was retained or documented in this report.

On April 7, 2021, the inspectors presented the results to Tom Ray, Site Vice President and other members of the licensee staff.

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