ML20192A118

Submission of a Supplement to Nac'S Request for Amendment No. 9 to the Certificate of Compliance No. 1031 for the NAC International Magnastor Cask System

ML20192A118
Person / Time
Site:	07201031
Issue date:	06/29/2020
From:	Fowler W NAC International
To:	Document Control Desk, Office of Nuclear Material Safety and Safeguards
References
Download: ML20192A118 (5)

Text

Atlanta Corporate Headquarters 3930 East Jones Bridge Road, Suite 200 Norcross, GA 30092 Phone 770-447-1144 www.nacintl.com June 29, 2020 U.S. Nuclear Regulatory Commission 11555 Rockville Pike Rockville, MD 20852-2738 Attn: Document Control Desk

Subject:

Submission of a Supplement to NAC's Request for Amendment No. 9 to the Certificate of Compliance No. 1031 for the NAC International MAGNASTOR Cask System Docket No. 72-1031

References:

1. U.S. Nuclear Regulatory Commission (NRC) Certificate of Compliance (CoC) No. 1031 for the NAC International MAGNASTOR Cask System, Amendment No. 7, March 24, 2019

2. MAGNASTOR Cask System Final Safety Analysis Report (FSAR),

Revision 10, NAC International, February 2019

3. ED20190099, Submission of a Request to Amend the U.S. Nuclear Regulatory Commission Certificate of Compliance No. 1031 for the NAC International MAGNASTOR Cask System, October 9, 2019

4. Application for Amendment No. 9 to The Model No. MAGNASTOR Storage Cask - Request for Additional Information, March 27, 2020

5. ED20200050, Submission of Responses to the U.S. Nuclear Regulatory Commission Request for Additional Information for Amendment No. 9 to the Certificate of Compliance No. 1031 for the NAC International MAGNASTOR Cask System, April 9, 2020 NAC International (NAC) hereby submits a replacement page to Reference 3. Specifically, FSAR Page 2.2-5. This page contains a table which defines the maximum heat load per storage location, as shown in Figure 2.2-1. This table contains several numerical values that are incorrect and is directly used in the proposed Amendment 9 MAGNASTOR CoC Appendix B Technical Specifications. Thus, NAC is resubmitting this page with corrected values. Note, this table consolidated all previously approved amendments into one table. The values corrected are as follows:

• Pattern C, Zones Bl, B2, and B3 - as discussed in the Reference 5 submittal, these values were inadvertently reversed; NAC corrected the proposed Technical Specifications but did not correct this table in the submittal; the values have been corrected to match the proposed Technical Specifications (i.e., Zone Bl should be 1,800 and Zones B2 and B3 should be 1,300 ED20200087

INAC f .. INTERNATIQNA~

U.S. Nuclear Regulatory Commission June 29, 2020 Page 2 of 2

• Pattern E, Zone C3 - this value has been updated to 1,000

• Pattern G, Zones Al, A3, and C2-Zones Al and A3 have been updated to be 300 and Zone C2 has been updated to 650 The editorial corrections for Pattern E and G are supported by the existing analyses provided in the 19B submittal (i.e., Submittal 19B FSAR Figures 4.11-1 and 4.11-3). The heat load limits for Pattern C were approved via a previous amendment request.

In accordance with NAC's administrative practices, upon final acceptance of this application, the 19B changed pages (Reference 3) and this submittal's FSAR replacement page will be reformatted and incorporated into the next revision of the MAGNASTOR FSAR. NAC is requesting an effective date for this amendment to be prior to March 2021.

Sincy If you have any comments or questions, please contact me on my direct line at 678-328-1236.

Wren Fowler Director, Licensing Engineering

Enclosures:

- Submittal 19B FSAR Replacement Page ED20200087

ANAC

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Enclosure 1 Submittal 19B FSAR Replacement Page

,: I *

,. , I ED20200087

MAGNASTOR System FSAR September 2019 Docket No. 72-1031 Revision 198 Figure 2.2-1 PWR Fuel Preferential Loading Patterns DFC Location

)) 4 (2)

C5 (5) (6) (7)

C1 (10)

B2

_m B3 B1 (12)

A1 B3 (13)

A3 (14)

B2

~

(16) (17) (18) (19) (20) (22)

C2 B1 A1 A2 A1 1 C2 (24) ~ (26) (27] (28) (29)

B2 A1 A3 82 C3

~ (33) w (30) (31)

C1 B3 B1 83 (35) (36)

C4 C5 C4 DFC Location Loadina Pattern and Maximum Heat Load per Storaae Location (W <1>

Storage A 8 C D E F G H Location A1 959 922 513 811 425 350 300 300 A2 800 800 800 800 A3 425 350 300 800 81 1,200 1,800 1,300 1,000 2,500 2,000 82 1,300 1,100 900 600 800 83 250 250 700 700 C1 800 830 950 1,800 800 800 C2 900 900 650 750 C3 1,000 900 2,000 2,050 C4 3,400 2,800 1,500 1,500 cs -- 150 950 950 Max Heat Load per 35,500 35,500 35,500 30,000 35,500 35,500 35,500 35,500 Cask CE16x16 CE16x16 BW15x15 BW15x15 BW15x15 BW15x15 Pattern Use when None None or in MTC2 in MTC2 in MTC2 in MTC2 Limitations using the W14x14 and CC6 and CC6 and CC6 and CC6 PMTC Note that, while the total heat load per canister is limited to 35.5 kW, the heat loads used in the analyses are 38 kW, 36.3 kW, 38.8 kW and 40 kW for Patterns X, Y, Zand Z-Prime, respectively (which is the summation of columns E, F, G, andH).

NAC International 2.2-5

MAGNASTOR System FSAR September 2019 Docket No. 72-1031 Revision 19B Figure 2.2-2 82-Assembly-BWR Basket Pattern

@= Fuel Assembly Locations CTI Vent/Drain Port Locations X Designated Nonfuel Locations Figure 2.2-3 [DELETED]

NAC International 2.2-6