RA-21-0074, Independent Spent Fuel Storage Installation (ISFSI) - Submittal of 2020 ISFSI Annual Effluent Release Report

Independent Spent Fuel Storage Installation (ISFSI) - Submittal of 2020 ISFSI Annual Effluent Release Report

ML21056A215
Person / Time
Site:	Oconee
Issue date:	02/25/2021
From:	Fisk P Duke Energy Carolinas
To:	Document Control Desk, Office of Nuclear Material Safety and Safeguards
References
RA-21-0074
Download: ML21056A215 (3)

Text

Paul V. Fisk Plant Manager Oconee Nuclear Station Duke Energy ON01VP l 7800 Rochester Hwy Seneca, SC 29672 o: 864.873.6413 f: 864.873.4208 Paul.Fisk@duke-energy.com 10 CFR 72.44(d)(3)

RA-21-0074 February 25, 2021 Attention: Document Control Desk Director, Division of Fuel Management Office of Nuclear Material Safety and Safeguards U.S. Nuclear Regulatory Commission Washington, DC 20555-0001

Subject:

Duke Energy Carolinas, LLC Oconee Nuclear Station License No. SNM-2503, Docket No. 72-4 Independent Spent Fuel Storage Installation 2020 ISFSI Annual Effluent Release Report In accordance with 10 CFR 72.44(d)(3), Duke Energy Carolinas, LLC (Duke Energy), hereby submits the annual report specifying the quantity of each of the principal radionuclides released to the environment in liquid and gaseous effluents during the previous 12 months of operation (January 1, 2020 through December 31, 2020) of the Independent Spent Fuel Storage Installation (ISFSI).

Duke Energy confirms that there were no releases of radioactive material from the Oconee ISFSI during the reporting period. This conclusion is based on the following:

a. The double-sealed welded Dry Storage Canisters (DSCs) in-service are fabricated from non-corrosive materials and are designed to maintain confinement for all normal, off-normal and accident conditions during storage, as well as during severe environmental events (e.g. tornado, earthquake). In addition, the monitoring of DSC surface contamination was within the limits given in Technical Specification 2.4.1, which provides assurance that any offsite dose was inconsequential.

b. There were no ISFSI off-normal or accident conditions or severe environmental phenomena during the reporting period.

c. Radiological dose data acquired at the ISFSI perimeter supports the conclusion.

RA-21-0074 February 25, 2021 Page 2 Should there be any questions concerning this report please contact Sam Adams, Oconee Regulatory Affairs, at 864-873-3348.

Sincerely, Paul V. Fisk Plant Manager Oconee Nuclear Station

RA-21-0074 February 25, 2021 Page 3 cc:

Ms. Laura Dudes, Regional Administrator U.S. Nuclear Regulatory Commission, Region II Marquis One Tower 245 Peachtree Center Ave., NE, Suite 1200 Atlanta, GA 30303-1257 Mr. Shawn Williams, Project Manager (ONS)

U.S. Nuclear Regulatory Commission 11555 Rockville Pike M/S O-8B1A Rockville, MD 20852-2746 Mr. Jared Nadel NRC Senior Resident Inspector Oconee Nuclear Station Ms. Lynne Garner, Manager (by electronic mail only: garnerld@dhec.sc.gov)

Division of Waste Management, Bureau of Land & Waste Management SC Department of Health and Environmental Control 2600 Bull Street Columbia, SC 29201