ML22216A110
| ML22216A110 | |
| Person / Time | |
|---|---|
| Site: | 07201031 |
| Issue date: | 08/04/2022 |
| From: | Fowler W NAC International |
| To: | Document Control Desk, Office of Nuclear Material Safety and Safeguards |
| References | |
| ED20220123 | |
| Download: ML22216A110 (14) | |
Text
Atlanta Corporate Headquarters 3930 East Jones Bridge Road, Suite 200 Peachtree Corners, GA 30092 Phone 770-447-1144 www.nacintl.com August 4, 2022 U.S. Nuclear Regulatory Commission 11555 Rockville Pike Rockville, MD 20852-2738 Attn: Document Control Desk
Subject:
MAGNASTOR Cask System Users CoC Amendments 0 thru 9 Intent to Adopt Letters 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. 9, December 7, 2020
- 2. MAGNASTOR Cask System Final Safety Analysis Report (FSAR),
Revision 12, NAC International, September 2021
- 3. ED20220004, Submission of an Amendment Request for the NAC International MAGNASTOR Cask System Amendment No. 12, January 24, 2022
- 4. ML22041A550, Teleconference for the Discussion of Amd. No. 12 and Potential Revision to Certificate of Compliance No. 1031 for the MAGNASTOR Storage System, February 24, 2022
- 5. ED20220032, Supplement to NACs Amendment Request for the NAC International MAGNASTOR Cask System Amendment No. 12, March 18, 2022
- 6. NRC Letter, Application for Amendment No. 12 to the Model No. MAGNASTOR Storage Cask - Request for Additional Information, April 12, 2022
- 7. ED20220060, RAI Response to NACs Amendment Request for the NAC International MAGANSTOR Cask System Amendment No. 12, April 18, 2022 Via Reference 7, NAC International (NAC) requested the changes being proposed to the Technical Specifications (TS) in Amendment 12 be included in Amendments 0 thru 9 via the issuance of a Certificate of Compliance (CoC) revision. In an effort to avoid a 10 CFR Part 72 backfit review, NAC is providing via Enclosure 1, herein, formal letters from all our current MAGNASTOR users which documents their intent to adopt the revised CoCs shortly after they become effective in 10 CFR Part 72. The letters cover the following ISFSIs: Palo Verde, Duke-McGuire, Duke-Catawba, Kewaunee, TMI-1, and Zion. If you have any comments or questions, please contact me on my direct line at 678-328-1236.
Sincerely, Digitally signed by Wren Fowler Wren Fowler Date: 2022.08.04 09:19:21
-04'00' Wren Fowler Director, Licensing Engineering
Enclosure:
- MAGNASTOR Cask System Users CoC Amendments 0 thru 9 Revisions Intent to Adopt Letters ED20220123
Enclosure 1 MAGNASTOR Cask System Users CoC Amendments 0 thru 9 Revisions Intent to Adopt Letters (Docket No 72-1031)
NAC International August 2022 ED20220123
10 CFR 72.7 Cary D. Harbor Vice President Regulatory & Oversight Palo Verde Nuclear Generating Station P.O. Box 52034 102-08436-CDH/KJG Phoenix, AZ 85072 April 28, 2022 Mail Station 7602 Tel: 623.393.7953 ATTN: Document Control Desk Director, Division of Spent Fuel Management Office of Nuclear Material Safety and Safeguards U.S. Nuclear Regulatory Commission Washington, DC 20555-0001
Subject:
Palo Verde Nuclear Generating Station Units 1, 2, and 3 and Independent Spent Fuel Storage Installation Docket Nos. STN 50-528/529/530 and 72-44 Renewed Operating License Nos. NPF-41, NPF-51, NPF-74 Request for Exemption from NAC-MAGNASTOR Certificate of Compliance 72-1031 - Cask Lid Design Requirements - Supplement In accordance with the provisions of 10 CFR 72.7, Specific Exemptions, Arizona Public Service Company (APS) requested an exemption from the provisions of 10 CFR 72.212(a)(2),
72.212(b)(3), 72.212(b)(5)(i), 72.212(b)(11), and 10 CFR 72.214 for the Palo Verde Nuclear Generating Station (PVNGS) Independent Spent Fuel Storage Installation by letter number 102-08416, dated March 31, 2022 [Agencywide Documents Access and Management System (ADAMS) Accession Number ML22090A098]. Specifically, an exemption was requested for the cask lid concrete design requirements in the NAC-MAGNASTOR Certificate of Compliance (CoC).
The requested exemption would apply to NAC-MAGNASTOR dry casks, described in the exemption request Enclosure of letter number 102-08416, that are or will be used by APS at PVNGS under CoC Amendment 7 listed in 10 CFR 72.214 (72-1031). By letter dated April 18, 2022, NAC International, Inc., the certificate holder for the NAC-MAGNASTOR system, responded to an NRC staff request for additional information (RAI) regarding the proposed revisions to the various amendments to the CoC (ADAMS Accession Number ML22108A197).
The NAC RAI response included proposed changes to the Technical Specifications (TS) and forms the regulatory and technical basis for the exemption request in letter number 102-08416. The proposed TS changes listed in Enclosure 1 to the NAC RAI response are met by APS, based upon NAC letter dated April 25, 2022 (Letter number ED20220065). APS intends to implement Revision 1 to Amendment 7 of the CoC, when final rulemaking is completed.
A member of the STARS Alliance LLC Callaway
- Diablo Canyon
- Palo Verde
- Wolf Creek
102-08436-CDH/KJG ATTN: Document Control Desk U. S. Nuclear Regulatory Commission Request for Exemption from NAC-MAGNASTOR CoC 72-1031 - Cask Lid Design Requirements
- Supplement Page 2 No new commitments are being made in this submittal. If you have any questions about this request, please contact Matthew S. Cox, Licensing Section Leader, at (623) 393-5753.
Sincerely, Digitally signed by Harbor, Harbor, Cary Cary (Z16762)
Date: 2022.04.28 16:14:19 (Z16762) -07'00' CDH/KJG/mg cc: S. A. Morris NRC Region IV Regional Administrator S. P. Lingam NRC NRR Project Manager for PVNGS B. H. White NRC NMSS Project Manager L. N. Merker NRC Senior Resident Inspector for PVNGS B. D. Goretzki Arizona Department of Health Services - Bureau of Radiation Control
526 South Church Street:
Mail Code EC08H Charlotte, NC 28202 o: 704-382-6815 Apr. 12, 2022 Eric Shewbridge NAC International 3930 East Jones Bridge Road, Suite 200 Norcross, GA 30092
Subject:
Duke Energy Compliance with NAC MAGNASTOR VCC Lid ACI Compliance Issue
Dear Mr. Shewbridge:
On February 1, 2022, NAC notified Duke Energy about an issue identified during an NRC inspection of NAC component fabrication activities conducted at Petersen, Inc. in December 2021. The NRC identified a Non-Cited Violation (NCV), Severity Level IV, regarding NACs vendor nonconformance report (VNCR) and 72.48 process. Specifically, Design Change Request (DCR(L)) 71160-FSAR-0Q and its associated 10 CFR 72.48 screening No. NAC MAG-052 removed explicit mention of the American Concrete Institute (ACI) ACI-318 requirements for slump, air entrainment, temperature, and compressive strength from FSAR Revision 0, Table 1.3-4 for the Concrete Cask lid by creating a new table specific to the Concrete Cask lid. The Concrete Cask body requirements remained unchanged. The specific violation was that NAC failed to file a Certificate of Compliance (CoC) amendment with the NRC fully describing the changes being made prior to implementing them via DCR(L) 71160-FSAR-0Q. The NRC CoC, Docket 72-1031, Appendix A, Technical Specifications and Design Features for the MAGNASTOR System, Section 4.2, Codes and Standards, commits to The American Concrete Institute Specifications ACI-349 and ACI-318 govern the CONCRETE CASK design and construction, respectively. This letter is being written to document the current Duke Energy position with respect to the identified condition.
Duke Energy with the support of NAC immediately performed an investigation of the previously fabricated systems on site for compliance with the ACI requirements as stated in Table 1.3-4 in Amendment 0 of the MAGNASTOR FSAR prior to the changes implemented via DCR(L) 71160-FSAR-0Q. These investigations are documented within the Duke Energy corrective action program as NCRs 02415332 and 02415334 for Catawba and McGuire respectively. The investigation concluded the Concrete Cask lid continues to perform its licensed safety function.
The concrete in the Concrete Cask lid has only been evaluated for a radiation shielding function and that is verified through concrete density checks during fabrication. In addition, the Technical Specifications require that dose measurements are always taken prior to moving a loaded cask to the storage pad to ensure the Concrete Cask lid performs adequately with respect to its licensing basis radiation shielding function. There have been no nonconformances for insufficient shielding in any of the MAGNASTOR storage cask systems.
Therefore, the issued NCV does not affect the ability of the systems to perform their intended safety functions and does not create a substantial safety hazard.
NACs approach for all licensees with in-process and near-term loading operations was to determine if the concrete cask lids provided comply, in essence, with the requirements of Table 1.3-4 in FSAR Revision 0. This requires that manufacturing evidence of the concrete ready-mix design and batch sheets from delivery. NAC and Duke Energy were not able to find
supporting information for the previously fabricated systems based on documentation package reviews and other quality records. This lack of fabrication information does not allow NAC to determine compliance, in essence, with the requirements of Table 1.3-4 and is not supportive of the cask lid concrete requirements for the systems proposed to be loaded in Summer 2022. As a result of the inability to provide adequate documentation, Duke Energy was required to submit an exemption request to continue with planned loading campaigns. That request was submitted to the NRC on April 7, 2022 (Duke Energy letter number RA-22-0080). The Vertical Concrete Casks (VCCs) listed in Enclosure 1 do not fully conform to the ACI requirements.
All systems are currently certified to Amendment 7 of the NAC MAGNASTOR CoC, Number 1031.
NAC submitted Amendment 12 on January 24, 2022 and provided a supplement, which included necessary Technical Specification changes that avoided an update directly to the FSAR, on March 18, 2022. In addition, it is expected that a revision will be issued to each applicable CoC amendment utilizing the technical basis from the Amendment 12 submittal and supplement. Both Catawba and McGuire plan to adopt this MAGNASTOR CoC, Number 1031, Amendment 7 revision as soon as practical after it is issued. All previously fabricated systems on site will be recertified to the adopted amendment revision.
Until MAGNASTOR CoC revisions are issued and adopted by Catawba and McGuire, each station will continue its current loading schedule utilizing the exemption request once approved.
Sincerely, Kevin Houston Director, Fuel Management and Design, Nuclear Fuels Engineering cc: R.S. Edwards (Duke Energy)
P. Washington (Duke Energy)
C.G. Long (Duke Energy)
W. Fowler (NAC)
Page 1 of 3 Enclosure 1 List of Affected Vertical Concrete Casks (VCCs)
Page 2 of 3 Duke Energy Site Serial Number Model Loading Status CNS CN-VCC-073 MAGNASTOR Loaded CNS CN-VCC-074 MAGNASTOR Loaded CNS CN-VCC-075 MAGNASTOR Loaded CNS CN-VCC-076 MAGNASTOR Loaded CNS CN-VCC-077 MAGNASTOR Loaded CNS CN-VCC-078 MAGNASTOR Loaded CNS CN-VCC-079 MAGNASTOR Loaded CNS CN-VCC-080 MAGNASTOR Loaded CNS CN-VCC-081 MAGNASTOR Loaded CNS CN-VCC-082 MAGNASTOR Loaded CNS CN-VCC-083 MAGNASTOR Loaded CNS CN-VCC-084 MAGNASTOR Loaded CNS CN-VCC-085 MAGNASTOR Loaded CNS CN-VCC-086 MAGNASTOR Loaded CNS CN-VCC-087 MAGNASTOR Loaded CNS CN-VCC-088 MAGNASTOR Loaded CNS CN-VCC-089 MAGNASTOR Loaded CNS CN-VCC-090 MAGNASTOR Loaded CNS CN-VCC-091 MAGNASTOR Loaded CNS CN-VCC-092 MAGNASTOR Loaded CNS CN-VCC-093 MAGNASTOR Loaded CNS CN-VCC-094 MAGNASTOR Loaded CNS CN-VCC-095 MAGNASTOR Loaded CNS CN-VCC-096 MAGNASTOR Loaded CNS CN-VCC-118 MAGNASTOR Not Yet Loaded CNS CN-VCC-119 MAGNASTOR Loaded CNS CN-VCC-120 MAGNASTOR Not Yet Loaded CNS CN-VCC-121 MAGNASTOR Not Yet Loaded CNS CN-VCC-122 MAGNASTOR Not Yet Loaded CNS CN-VCC-123 MAGNASTOR Not Yet Loaded CNS CN-VCC-124 MAGNASTOR Not Yet Loaded CNS CN-VCC-125 MAGNASTOR Not Yet Loaded CNS CN-VCC-126 MAGNASTOR Not Yet Loaded CNS CN-VCC-127 MAGNASTOR Not Yet Loaded CNS CN-VCC-128 MAGNASTOR Not Yet Loaded CNS CN-VCC-129 MAGNASTOR Not Yet Loaded Page 3 of 3 Duke Energy Site Serial Number Model Loading Status MNS MN-VCC-053 MAGNASTOR Loaded MNS MN-VCC-054 MAGNASTOR Loaded MNS MN-VCC-055 MAGNASTOR Loaded MNS MN-VCC-056 MAGNASTOR Loaded MNS MN-VCC-057 MAGNASTOR Loaded MNS MN-VCC-058 MAGNASTOR Loaded MNS MN-VCC-059 MAGNASTOR Loaded MNS MN-VCC-060 MAGNASTOR Loaded MNS MN-VCC-061 MAGNASTOR Loaded MNS MN-VCC-062 MAGNASTOR Loaded MNS MN-VCC-063 MAGNASTOR Loaded MNS MN-VCC-064 MAGNASTOR Loaded MNS MN-VCC-065 MAGNASTOR Loaded MNS MN-VCC-066 MAGNASTOR Loaded MNS MN-VCC-067 MAGNASTOR Loaded MNS MN-VCC-068 MAGNASTOR Loaded MNS MN-VCC-069 MAGNASTOR Loaded MNS MN-VCC-070 MAGNASTOR Loaded MNS MN-DF VCC-071 MAGNASTOR DF Loaded MNS MN-DF VCC-072 MAGNASTOR DF Loaded MNS MN-VCC-100 MAGNASTOR Not Yet Loaded MNS MN-VCC-101 MAGNASTOR Loaded MNS MN-VCC-102 MAGNASTOR Not Yet Loaded MNS MN-VCC-103 MAGNASTOR Loaded MNS MN-VCC-104 MAGNASTOR Loaded MNS MN-VCC-105 MAGNASTOR Loaded MNS MN-VCC-106 MAGNASTOR Loaded MNS MN-VCC-107 MAGNASTOR Loaded MNS MN-VCC-108 MAGNASTOR Loaded MNS MN-VCC-109 MAGNASTOR Loaded MNS MN-VCC-110 MAGNASTOR Loaded MNS MN-VCC-111 MAGNASTOR Loaded MNS MN-VCC-112 MAGNASTOR Not Yet Loaded MNS MN-VCC-113 MAGNASTOR Not Yet Loaded MNS MN-VCC-114 MAGNASTOR Not Yet Loaded MNS MN-VCC-115 MAGNASTOR Not Yet Loaded MNS MN-VCC-116 MAGNASTOR Not Yet Loaded MNS MN-VCC-117 MAGNASTOR Not Yet Loaded
Dominion .E nergy Kewaunee, Inc.
N490 Hwy 42, Kewaunee, WI 54216 Web Address: www.dominioncncrgy.com LIC-2022-002 June 14, 2022 NAC International Wren Fowler 3930 East Jones Bridge Road, Suite 200 Peachtree Corners, GA 30092
Subject:
Dominion Energy Kewaunee Voluntary Agreement to Implement CoC 1031 Amendment Revision To Resolve MAGNASTOR Concrete Lid Noncompliance Issue Ref: Kewaw1ee CR 2266
Dear Mr. Fowler,
In Februaiy, 2022, NAC notified Dominion Energy Kewaunee (DEK) about an NRC issued violation concerning NAC's VNCR and 72.48 process, specifically DCR(L) 71160-FSAR-0Q (NAC-09-MAG-052) that was processed in 2009 to remove explicit mention of the ACI 318 requirements for slump, air entrainment, temperature, and compressive strength from FSAR Revision O for the Concrete Cask Lid. NRC position is that this change should have been submitted for prior NRC approval. It was not. Prior to the change at issue, MAGNASTOR Technical Specifications and FSAR did not explicitly delineate between the concrete in the cask body and the concrete in the cask lid. Therefore, the changes made to remove code requirements for the concrete lid were viewed by NRC as changes the licensee (NAC) was not authorized to make under the 10 CFR 72.48 process.
DEK presently has MAGNASTOR casks in storage at Kewaunee under CoC 1031 Amendment
- 6. It is our understanding that NAC intends to request from NAC issuance of Revision 1 to Amendment 6 to resolve the issue.
DEK agrees to voluntarily implement this CoC 1031 MAGNASTOR Amendment Revision for our general licensee independent spent fuel storage installation at the Kewaunee Power Station.
In order to allow sufficient time to incorporate these changes in a quality manner, we request that NAC work with NRC to provide its general licensees a maximum 180-day period after the effective date of the revised amendment during which we can complete incorporation of the revised amendment.
Dominion Energy Kewaunee, Inc.
N490 Hwy 42, Kewaunee, WI 54216 P' Energy Dominion 0
Web Address: www.dominionencrgy.com If you have any questions, please contact Mr. William Zipp at (920) 304-9729.
Sincerely, Bradly J. M o ISFS1SiteDir -. Kewaunee Power Station Enclosure
Constellation 4300 Winfield Road Warrenville, IL 60555 630 65 7 2000 Office RS-22-100 July 28, 2022 ATTN: James J. Puzan NAC International Inc Atlanta Corporate Headquarters 3930 East Jones Bridge Road, Suite 200 Norcross, GA 30092
Subject:
Notification of Intent to Implement Revised CoC The purpose of this letter is to notify NAC International (NAC), that Constellation Energy Generation (CEG) intends to implement the revised certificate of compliance (CoC) for the MAGNASTOR system, CoC No. 1031 Amendment 9 Revision 1 at the Three Mile Island Nuclear Station, Unit 1, (TMl-1), after approval from the NRC has been received.
Implementation will be completed in a timely fashion after approval.
If you have any questions concerning this letter, please contact me at (630) 657-2823.
Respectfully, Pa:klR Patrick R. Simpson Sr. Manager Licensing Constellation Energy Generation, LLC cc: James J. Puzan- NAC International, jpuzan@nacintl.com George Carver- NAC International, gcarver@nacintl.com Wren Fowler- NAC International, wfowler@nacintl.com
ZIONSOLUTIQNSL- LC ________
April 12, 2022 ZS-2022-0015 James J. Puzan Director of Projects NAC International Inc.
3930 East Jones Bridge Road, Suite 200 Peachtree Comers, GA 30092
Subject:
ZionSolutions Response to NAC Finding Report (FR No 22-001)
MAGNASTOR VCC Closure Lid Concrete Requirements Issue
References:
- 1. Letter, George C Canrer (NAC) to Geriy Van Noordennen (ZionSolutions),
dated March 1, 2022, NAC file no. ED20220030, "NAC Finding Report (FR No. 2022-001) Impact to Safety"
- 3. US NRC Inspection Report No. 72-1015/2021-201, Januaiy 21, 2022
- 4. ED20220004, Submission of an Amendment Request for the NAC International MAGNASTOR Cask System Amendment No. 12, ADAMS No.
ML22024A374, January 24, 2022
Dear Mr. Puzan:
By way of Reference 1, NAC informed ZionSolutions of the licensing issues related to MAGNASTOR VCC Closure Lid concrete design requirements as documented in Reference 2 and raised by the NRC as a result of an audit ofNAC component fabrication activities conducted at Petersen, Inc. (Reference 3).
At issue are the design requirements applicable to VCC closure lids. NAC DCR(L) 71160-FSAR-OQ was issued (in 2009) to clarify requirements for the concrete cask body and the concrete cask lid. The requirements for the concrete cask lid were reduced to meeting a minimum concrete density of 140 pounds/cubic foot (minimum) with no concrete strength requirements other than that strength which results from use of commercial grade concrete fill.
As described in References 1 and 2, this DCR(L) was not properly processed as it should have been submitted to the NRC as a change to the Certificate of Compliance (versus being processed as a 10 CFR 72.48 review). Thus, the requirements of MAGNASTOR FSAR Revision O for VCC concrete remained applicable; hence, in addition to the minimum concrete density requirement, there was a minimum concrete strength requirement (i.e., 4000 psi). This strength requirement should only have been applicable to the VCC concrete body. In order to reconcile the attendant licensing deficiency, NAC has taken licensing action in submitting an 101 Shiloh Boulevard, Zion* IL 60099 (224) 789-4016
- Fax: (224) 789-4008
- VvWw.zionsolutionscompany .com
ZionSolutions, LLC ZS-2022-0015 Page 2 of 2 amendment request to the NRC for approval (Reference 4). This amendment will permit proper alignment of VCC body and lid concrete design requirements.
NACs conclusion in Reference 1 that the as-fabricated MAGNASTOR VCC closure lids that are in-service are performing their intended safety function (i.e., as radiation shielding). Furthermore, a review of fabrication data for the VCC closure lids supplied to Zion demonstrates that all Zion VCC closure lids have concrete densities that exceed the minimum requirement of 140 pounds/cubic foot.
As recommended in Reference 1, ZionSolutions has entered the non-compliance in the sites corrective action program (ZS CR 2022-0015) and has performed an operability determination demonstrating that the Zion VCC closure lids are fulfilling their intended safety function.
Finally, ZionSolutions also intends to rely on NRCs approval of NACs Amendment 12 and issuance of a revised Certificate of Compliance (CoC) that reconciles the licensing issue associated with MAGNASTOR VCC closure lid concrete requirements and permits closure of ZS CR 2022-0015.
Respectfully, Gerard van Noordennen Senior Vice President Regulatory Affairs cc: W. Fowler (NAC)
E. Shewbridge (NAC)
A. Orawiec (ZS/Constellation Nuclear)
W. Szymczak (ZS)
K. Van Hoogen (ZS)