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Results
Other: ML22005A350, ML22006A352, ML22006A353, ML22006A356, ML22020A185, ML22020A186, ML22278A001, ML23003A046, ML23067A436, ML23137A441, ML23220A156, ML23333A105
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MONTHYEARML20209A3722020-07-27027 July 2020 Notice of Partially Closed Third Pre-Application Meeting with Tn Ammericas LLC for Model No. TN-EAGLE Transportation Package Project stage: Meeting ML22005A3462021-12-14014 December 2021 Transmittal Letter from A. M. Al-Daouk to U.S. Nuclear Regulatory Commission, Renewal Request of the Certificate of Compliance No. 9329 for the Model No. S300 Package Project stage: Request ML22005A3502021-12-14014 December 2021 Email from D. Ortega (NNSA) to N. Garcia (U.S. NRC) Renewal of Certificate of Compliance (CoC) No. 9329 for the Model No. S300 Package Project stage: Other ML22006A3522021-12-27027 December 2021 Enclosure 3: Email Dated 12/27/21 from S. Burns (Nwp) to N. Garcia Santos (Nrc), Comments on Telephone Call Summary Dated 12/1/21, Model Nos. TRUPACT-II and Halfpact Packages Project stage: Other ML22006A3532021-12-27027 December 2021 Enclosure 2: Attachment to Email Dated 11-29-21, Responses to Follow Up Questions, Acceptance Tests for the Lead Ssield of the Shielded Canisters (Model Nos. TRUPACT-II and Halfpact Packages Project stage: Other ML22006A3562021-12-27027 December 2021 Enclosure 5: Clarification Regarding Testing Performed During the Shielded Container Prototype Testing (Drop Tests, Gamma Scans, Destructive Disassembly), Model Nos. TRUPACT-II and Halfpact Packages Project stage: Other ML22006A3552022-01-0606 January 2022 12/1/21-Conference Call Summary: Follow Up Questions Related to Shielding RAIs RAI-Sh-5 and -8 (Acceptance Tests, Shielded Canisters), Model Nos. TRUPACT-II and Halfpact Packages Project stage: RAI ML22020A1872022-01-25025 January 2022 Enclosure 2 - Safety Evaluation Report: Renewal for Certificate of Compliance, Revision 6, the Model No. S300 Package Project stage: Approval ML22020A1862022-01-25025 January 2022 Transmittal Letter (Markings) - Certificate of Compliance, Revision 6, and Renewal for the Model No. S300 Project stage: Other ML22020A1852022-01-25025 January 2022 Enclosure 1 - Certificate of Compliance, Revision 6, Model No. S300 Package (Renewal) Project stage: Other ML22278A0072022-09-0808 September 2022 Email from T.E. Sellmer (Nwp) to N. Garcia Santos (NRC) Acknowledgement of Application for CoC, Revision 27, Model No. TRUPACT-II and CoC, Revision 11, Model No. Halfpact Packages Project stage: Request ML22278A0012022-10-0404 October 2022 Email from T. Sellmer (Nwp) to N. Garcia Santos (NRC) Et Al., Delay of RAI Response-CoC, Revision 27, Model No. TRUPACT-II and CoC, Revision 11, Model No. Halfpact CoCs Project stage: Other ML23046A4542023-02-15015 February 2023 Request for Authorization of One-Time Shipment of Model No. Halfpact Crediting the Outer Confinement Vessel as the Containment Boundary Project stage: Request ML23067A4362023-03-16016 March 2023 Application for a Letter Authorization Related to Coc No. 9279, Model No. Halfpact - Accepted for Review - CAC No. 001029, EPID No. L-2023-LLA-0030 Project stage: Other ML23003A0462023-03-29029 March 2023 Response to Request for Reviewing a Position Paper from Nuclear Fuel Services, Inc. Related to Applicability of 10 CFR 71.15(C) to Shipment(S) Project stage: Other ML23089A2582023-03-29029 March 2023 Email Attachment, Staggered Request for Additional Information (Structural Evaluation and Operating Procedures), Model No. Halfpact - One-time Letter Authorization Project stage: RAI ML23333A1052023-04-28028 April 2023 Enclosure 3-2 (Redacted), Email from Tholly (NFS) to Ngarcia Santos (Nrc), NFS Follow Up Questions on Nrc'S Response to Nfs' Position Paper on the Applicability of 10 CFR 71.15 to Shipments, Conference Call Summary on 5/22/23 (Docket No. 70 Project stage: Other ML23131A1752023-05-15015 May 2023 Notice-Closed Meeting on May 22, 2023 to Discuss Questions About NRCs Response on the Applicability of 10 CFR 71.15 to a Shipment Project stage: Meeting ML23333A0392023-05-22022 May 2023 Conversation Record NRC Form 699, Conference Call Summary, NRC and NFS Closed Meeting on 5/22/2023 to Discuss Questions Related to Nrc'S Response to Nfs' Position Paper on Applicability of 10 CFR 71.15 to Shipments (Docket No. 70-143) Project stage: Meeting ML23333A0352023-05-22022 May 2023 Enclosure 2, Meeting Agenda, Conference Call Summary, NRC and NFS Closed Meeting on 5/22/23 to Discuss Questions Related to Nrc'S Response to Nfs' Position Paper on Applicability of 10 CFR 71.15 to Shipments (Docket No. 70-143) Project stage: Meeting ML23333A0382023-05-30030 May 2023 Conversation Record NRC Form 699, Conference Call Summary, NRC and NFS Meeting on 5/30/23 to Discuss Follow Up Questions on 5/22/23 Meeting - NFS Position Paper on Applicability of 10 CFR 71.15 to Shipments (Docket No. 70-143) Project stage: Meeting ML23333A1002023-05-30030 May 2023 Enclosure 4-2 (Redacted), Affidavit, Trade Secrets or Commercial Information, NFS Follow Up Questions on Nrc'S Response to Nfs' Position Paper on the Applicability of 10 CFR 71.15 to Shipments Project stage: Other ML23333A0332023-05-30030 May 2023 Email Dated 5-30-23 from T Holly (NFS) to Ngarcia Santos (Nrc), Transmittal of Affidavit Related to Fissile Material Exemption (10 CFR 71.15 (C), Follow Up Questions and Additional Comments (Docket No. 70-143) Project stage: Request ML23333A0342023-05-31031 May 2023 Enclosure 1 - Meeting Attendees - Conference Call Summary, NRC and NFS Closed Meeting on 5/22/23 to Discuss Questions Related to Nrc'S Response to Nfs' Position Paper on Applicability of 10 CFR 71.15 to Shipments (Docket No. 70-143) Project stage: Meeting ML23137A4412023-06-0202 June 2023 Authorization for Shipment of the Model No. Halfpact Package - Inner Containment Vessel No. 506 Project stage: Other ML23220A1562023-07-21021 July 2023 Road Map for Changes to the Safety Analysis Report Related for Certificate of Compliance No. 9355, Revision 4, Model No 435-B Project stage: Other ML23220A1572023-07-21021 July 2023 Transmittal Letter from Ahmad M. Al-Daouk (NNSA) to Ngarcia Santos (NRC) Related to the Application for Certificate of Compliance No. 9355, Revision 4, Model No. 435-B Project stage: Request ML23229A2072023-08-17017 August 2023 Notice for a Partially Closed Pre-application Meeting with NAC International to Discuss the NAC Lwt Pre-application Project stage: Meeting ML23263A1022023-09-20020 September 2023 Email Dated 9-20-23 from N. Garcia Santos (NRC) to J. Mumma (Nnsa), Subject: Package Model No. 453-B--Need Clarification on Submittals Project stage: Approval ML23258A2142023-10-0202 October 2023 Meeting Summary: Pre-application Meeting on NAC Lwt to Discuss Iron Clad Fuel Rod Revision Request, August 31, 2023 Project stage: Meeting 2023-03-16
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Text
March 29, 2023 Tim Knowles, Director Safety and Safeguards Nuclear Fuel Services, Inc.
1205 Barnner Hill Road Erwin, TN 37650
SUBJECT:
REQUEST FOR REVIEWING A POSITION PAPER FROM NUCLEAR FUEL SERVICES, INC. RELATED TO APPLICABILITY OF 10 CFR 71.15(C) TO SHIPMENT(S)
Dear Tim Knowles:
This letter responds to your request dated September 16, 2022, (Agencywide Documents Access and Management System [ADAMS] Accession No. ML22285A146), for the U.S. Nuclear Regulatory Commission (NRC) to review and concur on the document titled Position Paper for Compliant Handling, Shipping, and Disposal of Low-Level Radioactive Waste Containing Fissile Material per the Exemption in 10 CFR 71.15 (hereafter, position paper). In this letter the NRC staff (hereafter, the staff) provides its views on Nuclear Fuel Services Inc.s (hereafter, the licensee) discussion on the position paper of regulatory applicability of Title 10 of the Code of Federal Regulations (10 CFR) 71.15(c)(1) and concludes that the shipping configuration NFS describes does not meet the requirements of this regulation.
In its position paper, the licensee describes a transportation configuration of waste material containing uranium-235 (235U) that the licensee believes meets the fissile exemption requirements of 10 CFR 71.15(c)(1). This regulation allows low concentrations of fissile material commingled with solid nonfissile material to be exempted from the fissile material transportation requirements provided that:
(i) There is at least 2,000 grams of solid material nonfissile material for every gram of fissile material, and (ii) There is no more than 180 grams of fissile material distributed within 360 kg of contiguous nonfissile material.
The configuration that the licensee describes consists of radioactive material containing 235U (fissile material) placed in plastic bottles or liners and subsequently in 55-gallon drums filled with sand in a mass sufficient to meet the 2,000:1 of nonfissile-to-fissile mass ratio required by 10 CFR 71.15(c)(1)(i). The licensee stated that it would also need to control the mass of fissile material per drum to meet the mass distribution criterion of 10 CFR 71.15(c)(1)(ii) (no more than 180 grams fissile material distributed within 360 kilograms of contiguous nonfissile material).
T. Knowles 2 The licensee noted in its position paper that it believes the transport configuration described meets the requirements of 10 CFR 71.15(c), since the fissile material is commingled with nonfissile material in the required ratio per 10 CFR 71.15(c)(1)(i), and the distribution requirement of 10 CFR 71.15(c)(1)(ii) is met. In section 7 of the position paper, the licensee further notes that the calculations referenced in NUREG/CR-7239 ORNL/TM-2013/57, Review of Exemptions and General Licensees for fissile Material in 10 CFR 71, (ML18052A520)
(hereafter, NUREG/CR-7239) allow for non-homogeneity/redistribution while remaining compliant with the safety basis of the regulation. The licensee also notes that the calculations performed to support the 10 CFR 71.15(c) fissile exemption in NUREG/CR-7239 do not carry an expectation the waste matrix is homogeneous.
The staff notes that NUREG/CR-7239 provides a discussion of the intent of the fissile exemptions in 10 CFR 71.15, and clearly states for 10 CFR 71.15(c) in section 4.1.3 that:
The intent is to have package contents that have an essentially homogeneous mixture of fissile and nonfissile material.
the fissile material must be distributed within contiguous nonfissile material, which will ensure the fissile material will not form any heterogeneous arrangements within the waste matrix during normal conditions of transport and hypothetical accident conditions.
The licensee noted that the staff performed calculations evaluating potential heterogeneous configurations of fissile material commingled with nonfissile material. However, the staff performed these calculations to ensure that essentially homogeneous packaged material, which may have concentration variations introduced during normal conditions of transport and hypothetical accident conditions (e.g., due to leaching, settling, impacts, fire, etc.) would remain subcritical in infinite quantities with the distribution requirement of 10 CFR 71.15(c)(1)(ii) (see the discussion of large rail cars containing homogenized distributions of fissile material within a nonfissile waste matrix in the 10 CFR Part 71 2004 Final Rule (69 Federal Register 3698, 3749)). The licensees described transportation configuration is heterogeneous as packaged, and as discussed below, could have non-fissile mass removed from the packaging configuration during normal conditions of transport and hypothetical accident conditions.
The staff notes that for the described fissile material configuration, the plastic bottles containing fissile material are easily separable from the nonfissile backfill material (i.e., sand) under normal conditions of transport or hypothetical accident conditions, where material may be released from the package. Separated plastic bottles containing fissile material do not provide assurance of criticality safety in an optimum moderation accident condition, as required by 10 CFR 71.55(e)(1) and (2), and 10 CFR 71.59(a)(2) (including melting of plastic bottles in a fire, and the addition of unlimited quantities of water). This is especially true considering that there is no package accumulation control for fissile exempt packages, and criticality calculations supporting fissile exemptions, therefore, consider infinite media.
T. Knowles 3 Accordingly, the staff disagrees with the licensee that the shipping configuration described in the position paper meets the fissile material exemption regulation in 10 CFR 71.15(c)(1).
Additionally, NUREG/CR-7239 describes essentially homogeneous material configurations that meet the requirements in 10 CFR 72.15 on exemption from classification as fissile material.
The staff is available to meet to discuss this letter. If you have any questions, please contact Norma Garcia Santos of my staff at Norma.GarciaSantos@nrc.gov.
Sincerely, Signed by Helton, Shana on 03/29/23 Shana Helton, Director Division of Fuel Management Office of Nuclear Material Safety and Safeguards Docket No.70-143 CAC No. 001029 EPID No. L-2022-LLL-0017