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Category:E-Mail
MONTHYEARML24082A1102024-03-21021 March 2024
Accepted for Review - Application for NAC International NAC-LWT SAR, Revision 47 Incorporating Changes from Coc No. 9225 Revisions 72 and 73 as Approved Contents for Transport
ML24071A1222024-02-23023 February 2024
NAC-LWT Safety Analysis Report (Sar), Revision 47 Consolidation - Acknowledgment of Receipt
ML20254A3292020-08-24024 August 2020
Criticality Review Input File: (Attachment 1 to Email from W. Fowler (NAC) to N. Devaser (Nrc), NAC-LWT Bias Evaluation; Associated with Responses to the NRC RAI for NAC-LWT SAR, Revision 20B)
ML20254A3282020-08-24024 August 2020
Email from W. Fowler (NAC) to N. Devaser (Nrc), NAC-LWT Bias Evaluation; Associated with Responses to the NRC Request for Additional Information for NAC-LWT SAR, Revision 20B
ML0722503042007-08-0909 August 2007
Request for Additional Information on Employee Transfers Val and Morris License Transfer Request
ML20254A3312003-04-23023 April 2003
Criticality Review Output File: (Attachment 2 to Email from W. Fowler (NAC) to N. Devaser (Nrc), NAC-LWT Bias Evaluation; Associated with Responses to the NRC RAI for NAC-LWT SAR, Revision 20B)
2024-03-21
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Category:Report
MONTHYEARML23244A1782023-08-31031 August 2023
NAC-LWT Legal Weight Truck Cask System Safety Analysis Report Initial Submittal Iron Clad Fuel
ML20262H0352020-09-29029 September 2020
Enclosure 1: CoC No. 9225, Revision No. 70 (Letter to W. Fowler Revision No. 70 of Certificate of Compliance No. 9225 for the Model No. NAC-LWT Transportation Package)
ML20254A3292020-08-24024 August 2020
Criticality Review Input File: (Attachment 1 to Email from W. Fowler (NAC) to N. Devaser (Nrc), NAC-LWT Bias Evaluation; Associated with Responses to the NRC RAI for NAC-LWT SAR, Revision 20B)
ML20254A3282020-08-24024 August 2020
Email from W. Fowler (NAC) to N. Devaser (Nrc), NAC-LWT Bias Evaluation; Associated with Responses to the NRC Request for Additional Information for NAC-LWT SAR, Revision 20B
ML20254A3312003-04-23023 April 2003
Criticality Review Output File: (Attachment 2 to Email from W. Fowler (NAC) to N. Devaser (Nrc), NAC-LWT Bias Evaluation; Associated with Responses to the NRC RAI for NAC-LWT SAR, Revision 20B)
2023-08-31
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Category:Miscellaneous
MONTHYEARML20254A3292020-08-24024 August 2020
Criticality Review Input File: (Attachment 1 to Email from W. Fowler (NAC) to N. Devaser (Nrc), NAC-LWT Bias Evaluation; Associated with Responses to the NRC RAI for NAC-LWT SAR, Revision 20B)
ML20254A3282020-08-24024 August 2020
Email from W. Fowler (NAC) to N. Devaser (Nrc), NAC-LWT Bias Evaluation; Associated with Responses to the NRC Request for Additional Information for NAC-LWT SAR, Revision 20B
ML20254A3312003-04-23023 April 2003
Criticality Review Output File: (Attachment 2 to Email from W. Fowler (NAC) to N. Devaser (Nrc), NAC-LWT Bias Evaluation; Associated with Responses to the NRC RAI for NAC-LWT SAR, Revision 20B)
2020-08-24
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Text
8/24/2020 Gmail - FW: NAC-LWT Bias Evaluation Heath Baldner <heath.baldner@gmail.com>
FW: NAC-LWT Bias Evaluation Heath Baldner <hbaldner@nacintl.com> Mon, Aug 24, 2020 at 10:33 AM To: Heath Baldner <heath.baldner@gmail.com>
Heath Baldner Licensing Engineer l NAC International Inc.
678.328.1252 l hbaldner@nacintl.com From: Wren Fowler <wfowler@nacintl.com>
Sent: Monday, August 24, 2020 9:04 AM To: Devaser, Nishka <nishka.devaser@nrc.gov>; White, Bernie <Bernard.White@nrc.gov>
Cc: Holger Pfeifer <hpfeifer@nacintl.com>; George Carver <gcarver@nacintl.com>; Debi Chapman <dchapman@nacintl.com>; Heath Baldner
<hbaldner@nacintl.com>
Subject:
NAC-LWT Bias Evaluation Nishka and Bernie, After our call last week on RAI 4-3, Holger provided the following and the attached data files. This should close out RAI 4-3. For RAI 4-2, at this time we prefer to leave the language on engineering judgement as is. If this is still an issue, just give me a call so we can work through it some more in a timely manner. We still need to get to the DOT and then Canada before the shipments can begin.
NAC updated the USL generation documented in Calculation 91150-1060-016 to determine the USL when eliminating the 20% and under enriched data points.
The data remained normal and results in a minimum USL of 0.9328, slightly lower than the USL determined when including the low enrichment data points. As the amendment requested enrichment is slightly above the validated range (<1wt%), and the USL equation has a negative slope, extrapolating the fitted USL line yields a USL of 0.93255 at 94 wt% enrichment. Change is ~0.0012 from the previously applied USL of 0.9338 (was EALF controlled). This is not considered a safety concern and all calculated values of keff+2s are below the postulated revised USL of 0.9325.
https://mail.google.com/mail/u/0?ik=2ee1ccc0ca&view=pt&search=all&permmsgid=msg-f%3A1675917620537914624&simpl=msg-f%3A1675917620537914624&mb=1 1/2
8/24/2020 Gmail - FW: NAC-LWT Bias Evaluation For a consistent data presentation NAC also regenerated the EALCF correlation without the lower enriched fuel. Minimum USL for this correlation is 0.9329 (i.e.,
enrichment would become the bounding correlation).
Thanks.
Wren Fowler Director, Licensing NAC International Inc.
Office: 678.328.1236 Email: wfowler@nacintl.com 2 attachments enr_no_low.in 2K enr_no_low.out 6K https://mail.google.com/mail/u/0?ik=2ee1ccc0ca&view=pt&search=all&permmsgid=msg-f%3A1675917620537914624&simpl=msg-f%3A1675917620537914624&mb=1 2/2