NLS2020056, Data from Metamic Coupon Sampling Program

Data from Metamic Coupon Sampling Program

ML20307A409
Person / Time
Site:	Cooper
Issue date:	10/22/2020
From:	Dewhirst L Nebraska Public Power District (NPPD)
To:	Document Control Desk, Office of Nuclear Reactor Regulation
References
NLS2020056
Download: ML20307A409 (2)

Text

Proprietary Information - Withhold Under 10 CFR 2.390 H

Neb~aska Public Power Disrrict Alwa,1 there whffl :,ow need 11.S NLS2020056 October 22, 2020 U.S~ Nuclear Regulatory Commission Attention: Document Control Desk Washington, D.C. 20555-0001

Subject:

Data from Metamic Coupon Sampling Program Coope~ Nuclear Station, Docket No. 50-298, DPR-46

Reference:

Letter from Stewart B. Minahan, Nebraska Public Power District, to U.S. Nuclear Regulatory Commission, Dated April 17, 2007, "Response to Request for Additional Information Regarding License Amendment Request for Onsite Spent Fuel Storage Expansion" (NLS2007012) '

Dear Sir or Madam:

The purpose ofthis letter is for the Nebraska Public Power District (NPPD) to provide to the Nuclear Regulatory Commission surveillance data from the Cooper Nuclear Station (CNS)

Metamic coupon sampling program. The purpose of the Metamic coupon sampling program_ is to characterize certain physical and chemical properties of the Metamic sample coupons from the CNS spent fuel storage pool. Per the Reference letter, NPPD committed to remove a Metamic coupon from the spent fuel pool for testing after 2, 4, 8, 16, 20, 24, and 28 years. In addition to measurements and observations of coupon physical characteristics, NPPD stated in the Reference letter that a neutron attenuation test would be performed after 4, 12, and 20 years. This report pertains to the year twelve test.

One Metarnic coupon was removed from the spent fuel pool after twelve years and provided to Holtec International for testing. The testing results are contained in Enclosure 1. Coupon dimensional and density data is included in Section 6.0 of the enclosed report Neutron attenuation testing results are reported in Table 1 of Section 5 .0 of the enclosed report The results meet procedural acceptance criteria and the neutron attenuation results indicate no degradation in Boron-10 content is considered to be proprietary to Holtec International pursuant to 10 CFR 2.390(aX4). The Holtec affidavit required by 10 CFR 2.390(b)(l) requesting that this report be withheld from public disclosure is provided as Enclosure 2.

This letter contains no new regulatory commitments. contains Proprietary Information. Upon separation from Enclosure 1, the cover letter and the remainder of the document are decontrolled.

COOPER NlJO.EAR STATlON PO Box 98 / Brownv,//e, NE 68321-0098 Telephone: (402) 825-3811 / Fax: (402) B2s-s2n wwwnppd com

Proprietary Information- Withhold Under 10 CFR 2.390 NLS2020056 Page 2 of2 The contact address for the enclosed affidavit is as follows:

Kimberly Manzione 1 Holtec Boulevard Camden, NJ 08104 ave any questions regarding this matter, please contact me at (402) 825-5416.

inda Dewhirst Regulatory Affairs & Compliance Manager

/tf

Enclosures:

1. Holtec International Report No. HI-2200897, Summary Report of the Examination of Cooper Nuclear Station Metamic Co:µpon

2. Holtec International Affidavit Pursuant to 10 CFR 2.390 cc: Regional Administrator w/enclosures USNRC - Region IV Cooper Project Manager w/enclosures USNRC - NRR Plant Licensing Branch IV Senior Resident Inspector w/enclosures USNRC-CNS NPG Distribution w/o enclosures Cooper Nuclear Station CNS Records w/enclosures contains Proprietary Information. Upon separation from Enclosure 1, the cover letter and the remainder of the document are decontrolled.