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MONTHYEARRS-15-119, Supplemental Information Regarding License Amendment Request Regarding Spent Fuel Storage Pool Criticality Methodology and Proposed Change to Technical Specification 4.3.1, Criticality2015-05-0808 May 2015 Supplemental Information Regarding License Amendment Request Regarding Spent Fuel Storage Pool Criticality Methodology and Proposed Change to Technical Specification 4.3.1, Criticality Project stage: Supplement RS-15-226, Supplemental Information Regarding License Amendment Request Regarding Spent Fuel Storage Pool Criticality Methodology and Proposed Change to Technical Specification 4.3.1, Criticality2015-07-30030 July 2015 Supplemental Information Regarding License Amendment Request Regarding Spent Fuel Storage Pool Criticality Methodology and Proposed Change to Technical Specification 4.3.1, Criticality Project stage: Supplement ML15352A0052015-12-17017 December 2015 NRR E-mail Capture - (CAC MF5734/MF5735) Dresden Nuclear Power Station, Units 2 and 3 - Spent Fuel Pool Criticality Analysis LAR Project stage: Other RS-16-042, Supplemental Information Supporting License Amendment Request Regarding Spent Fuel Storage Pool Criticality Methodology and Proposed Change to Technical Specification 4.3.1, Criticality.2016-02-0808 February 2016 Supplemental Information Supporting License Amendment Request Regarding Spent Fuel Storage Pool Criticality Methodology and Proposed Change to Technical Specification 4.3.1, Criticality. Project stage: Supplement ML15343A1262016-04-29029 April 2016 Issuance of Amendments to Amend Facility Operating License Nos. DPR-19 and DPR-25 to Revise Technical Specifications to Support Use of a New Nuclear Criticality Safety Analysis Methodology Project stage: Approval ML16141A7502016-06-0707 June 2016 Correction Letter to Renewed Facility Operating License No. DPR-19 License Page Project stage: Other 2015-07-30
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Category:Letter
MONTHYEARIR 05000237/20230042024-02-0202 February 2024 Integrated Inspection Report 05000237/2023004 and 05000249/2023004 IR 05000010/20230012024-01-17017 January 2024 NRC Inspection Report 05000010/2023001 (Drss) ML23354A2812024-01-0404 January 2024 Exemption from Select Requirements of 10 CFR Part 73 (EPID L-2023-LLE-0031 (Security Notifications, Reports, and Recordkeeping and Suspicious Activity Reporting)) ML23305A1402023-12-13013 December 2023 Units 1 & 2; Nine Mile Point, Unit 2; Peach Bottom, Units 2 & 3; and Quad Cities, Units 1 and 2 - Issuance of Amendments to Adopt Traveler TSTF-580 RS-23-121, Sixth Ten-Year Interval Inservice Testing Program2023-11-30030 November 2023 Sixth Ten-Year Interval Inservice Testing Program SVPLTR 23-0037, Core Operating Limits Report for Cycle 292023-11-29029 November 2023 Core Operating Limits Report for Cycle 29 RS-23-119, Supplemental Information Letter for Part 73 Exemption Request - Responses to Request for Confirmatory Information2023-11-10010 November 2023 Supplemental Information Letter for Part 73 Exemption Request - Responses to Request for Confirmatory Information ML23317A1192023-11-10010 November 2023 Constellation Energy Generation, LLC - 2023 Annual Report - Guarantees of Payment of Deferred Premiums RS-23-107, Relief Request I5R-22, Inservice Inspection Program Relief Request Regarding Examination Coverage for the Fifth Inservice Inspection Interval2023-11-0808 November 2023 Relief Request I5R-22, Inservice Inspection Program Relief Request Regarding Examination Coverage for the Fifth Inservice Inspection Interval RS-23-102, Request for Exemption from Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Implementation2023-10-16016 October 2023 Request for Exemption from Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Implementation ML23285A2342023-10-13013 October 2023 Confirmation of Initial License Examination RS-23-097, Constellation Energy Generation, LLC, Advisement of Leadership Changes and Submittal of Updated Standard Practice Procedures Plans2023-10-12012 October 2023 Constellation Energy Generation, LLC, Advisement of Leadership Changes and Submittal of Updated Standard Practice Procedures Plans ML23279A0712023-10-0606 October 2023 Response to NRC Dresden Nuclear Power Station, Units 2 and 3 - Comprehensive Engineering Team Inspection Report 05000237/2023011 and 05000249/2023011 ML23269A0662023-09-28028 September 2023 Proposed Alternative Request RV-23H Associated with the Sixth 10-Year Inservice Testing Interval ML23265A1322023-09-27027 September 2023 Proposed Alternative Request RV-03 Associated with the Sixth 10-Year Inservice Testing Interval ML23205A1362023-09-20020 September 2023 Proposed Alternative Request RV-02D Associated with the Sixth IST Interval IR 05000237/20230112023-09-0606 September 2023 Comprehensive Engineering Team Inspection Report 05000237/2023011 and 05000249/2023011 RS-23-071, Application to Adopt TSTF-564, Safety Limit MCPR2023-08-30030 August 2023 Application to Adopt TSTF-564, Safety Limit MCPR RS-23-080, Constellation Energy Generation, LLC, Application to Revise Technical Specifications to Adopt TSTF-264-A, Revision 0, 3.3.9 and 3.3.10 - Delete Flux Monitors Specific Overlap Requirement SRs2023-08-30030 August 2023 Constellation Energy Generation, LLC, Application to Revise Technical Specifications to Adopt TSTF-264-A, Revision 0, 3.3.9 and 3.3.10 - Delete Flux Monitors Specific Overlap Requirement SRs IR 05000237/20234022023-08-29029 August 2023 Security Baseline Inspection Report 05000237/2023402 and 05000249/2023402 IR 05000237/20230022023-08-0808 August 2023 Integrated Inspection Report 05000237/2023002 and 05000249/2023002 ML23212A9892023-08-0303 August 2023 Subsequent License Renewal Application Public Meeting Summary of Pre-Submittal Meeting ML23174A1502023-08-0303 August 2023 Issuance of Amendment Nos. 282 and 275 Control Rod Scram Times ML23193A0052023-07-28028 July 2023 Subsequent License Renewal Application Public Meeting Summary of Pre-Submittal Meeting ML23192A6292023-07-11011 July 2023 Correction Letter - Issuance of Amendment Nos. 281 and 274 Regarding Transition to GNF3 Fuel (EPID L-2022-LLA-0121) (Non-Proprietary) ML23144A3142023-07-0606 July 2023 Issuance of Amendment Nos. 281 and 274 Transition to GNF3 Fuel (EPID L-2022-LLA-0121) - Nonproprietary ML23187A0462023-07-0606 July 2023 Notification of NRC Baseline Inspection and Request for Information; 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RS-16-042 10 CFR 50.90 February 8, 2016 U.S. Nuclear Regulatory Commission A TIN: Document Control Desk Washington, DC 20555-0001 Dresden Nuclear Power Station, Units 2 and 3 Renewed Facility Operating License Nos. DPR-19 and DPR-25 NRG Docket Nos. 50-237 and 50-249
Subject:
Supplemental Information Supporting License Amendment Request Regarding Spent Fuel Storage Pool Criticality Methodology and Proposed Change to Technical Specification 4.3.1, "Criticality"
References:
- 1. Letter from Patrick R. Simpson (Exelon Generation Company, LLC) to U. S. NRG, "License Amendment Request Regarding Spent Fuel Storage Pool Criticality Methodology and Proposed Change to Technical Specification 4.3.1, 'Criticality'," dated December 30, 2014 2. Letter from Eva A. Brown (U.S. NRG) to Bryan C. Hanson (Exelon Generation Company, LLC), "Dresden Nuclear Power Station, Units 2 and 3 -Proposed License Condition Regarding the Spent Fuel Pool Nuclear Criticality Safety Analysis Methodology (CAC Nos. MF5734 and MF5735)," dated January 11, 2016 3. Letter from Patrick R. Simpson (Exelon Generation Company, LLC) to U. S. NRG, "Supplemental Information Supporting License Amendment Request Regarding Spent Fuel Storage Pool Criticality Methodology and Proposed Change to Technical Specification 4.3.1, 'Criticality'," dated October 15, 2015 In Reference 1, Exelon Generation Company, LLC (EGG) requested an amendment to Renewed Facility Operating License Nos. DPR-19 and DPR-25 for Dresden Nuclear Power Station (DNPS), Units 2 and 3, respectively.
Specifically, EGG is utilizing a new Criticality Safety Analysis (CSA) methodology for performing the criticality safety evaluation for legacy fuel types in addition to the new ATRIUM 10XM fuel design in the spent fuel pool (SFP). In addition, EGG is proposing a change to the DNPS Technical Specification (TS) 4.3.1, "Criticality," in support of the new CSA. EGG proposes to add a new TS 4.3.1.1.c that will require an in-rack K-infinity limit for the fuel assemblies that are allowed to be stored in the DNPS Units 2 and 3 SFP storage racks.
February 8, 2016 U.S. Nuclear Regulatory Commission Page 2 In Reference 2, the NRG described a proposed license condition that will be necessary to ensure the Boron-1 o areal density of the Boral remains at or above its minimum credited value and the TS value of Kett < 0.95 is maintained as part of a SFP Boral coupon surveillance program. Reference 2 requested EGG to provide a response indicating EGC's understanding and acceptance of the license condition.
EGG has reviewed the proposed license condition, and understands that the NRG plans to issue a license condition that will require the following coupon surveillance program performance objectives to be met as described in Reference
- 2. 1. Ensure that coupon measurements of 8 10 areal density are performed by a qualified laboratory;
- 2. Ensure that the coupons are removed for evaluation every 1 O years; 3. Ensure that should any coupon be identified as failing the minimum certified 8 10 areal density criterion based on coupon test results, EGG will perform in-situ testing to confirm that the minimum 8 10 areal density (0.02 g/cm 2) is met for all panels installed in the DNPS spent fuel pools; and 4. Submit a report to the NRG within 90 days following the completion of evaluations associated with Item 3 above. The report shall include; a description of the testing results, the assessments performed, and the interim and long-term corrective actions for abnormal indications.
EGG understands that the above license condition requires that in the event a coupon is found to fail the minimum certified areal density criterion, in-situ testing of a statistically representative sample of 80RAL panels, in accordance with our program, is required to verify that the TS 4.3.1.1.a Kett requirement is met for the spent fuel storage racks. The results of this in-situ testing will be documented in a report submitted to the NRG. Based on this understanding, EGG requests that the NRG revise performance objective 3 above to read as follows: 3. Ensure that should any coupon be identified as failing the minimum certified 8 10 areal density criterion based on coupon test results, EGG will perform in-situ testing of a statistically representative sample of 80RAL panels to confirm that the minimum 8 10 areal density (0.02 g/cm 2) is met for all panels installed in the DNPS spent fuel pools; and The proposed license condition discussed above impacts the regulatory commitments previously made in Attachment 9 to Reference
- 3. The proposed license condition will replace the need for the commitments specified in Reference
- 3. Therefore, a revised regulatory commitment summary is attached that supersedes the commitment summary provided in Reference 3 in its entirety.
EGG has reviewed the information supporting a finding of no significant hazards consideration, and the environmental consideration, that were previously provided to the NRG in Attachment 1 of Reference
- 1. The additional information provided in this submittal does not affect the bases for concluding that the proposed license amendment does not involve a significant hazards consideration.
In addition, the additional information provided in this submittal does not affect the bases for concluding that neither an environmental impact statement nor an environmental assessment needs to be prepared in connection with the proposed amendment.
February 8, 2016 U.S. Nuclear Regulatory Commission Page 3 Should you have any questions concerning this letter, please contact Mr. Timothy A. Byam at (630) 657-2818.
I declare under penalty of perjury that the foregoing is true and correct. Executed on the 8th day of February 2016. Patrick R. Simpson Manager -Licensing
Attachment:
Summary of Regulatory Commitments cc: NRC Regional Administrator, Region Ill NRC Senior Resident Inspector
-Dresden Nuclear Power Station Illinois Emergency Management Agency -Division of Nuclear Safety ATTACHMENT Summary of Regulatory Commitments The following list identifies those actions committed to by Exelon Generation Company, LLC, (EGC) for Dresden Nuclear Power Station. Any other actions discussed in the submittal represent intended or planned actions by EGC, are described only for information, and are not regulatory commitments.
COMMITMENT TYPE COMMITTED DATE ONE-TIME PROGRAMMATIC OR "OUTAGE" ACTION (YES/NO) COMMITMENT (YES/NO) None