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| | number = ML18039A728 | | | number = ML18039A728 |
| | issue date = 02/08/2018 | | | issue date = 02/08/2018 |
| | title = NRC Denial of Exelon Generation Company, LLC, Appeal of Clinton Power Station-Final Significance Determination of a White Finding; NRC Inspection Report 05000461/2018090 | | | title = NRC Denial of Exelon Generation Company, Llc, Appeal of Clinton Power Station-Final Significance Determination of a White Finding; NRC Inspection Report 05000461/2018090 |
| | author name = West K S | | | author name = West K S |
| | author affiliation = NRC/RGN-III/ORA | | | author affiliation = NRC/RGN-III/ORA |
Revision as of 15:42, 18 February 2018
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Category:Letter
MONTHYEARML24211A2302024-09-11011 September 2024 – Request for Partial Site Release for Facility Operating License No. NPF-62 RS-24-087, Annual 10 CFR 50.46 Report of Emergency Core Cooling System Evaluation Model Changes and Errors for Clinton Power Station2024-09-0909 September 2024 Annual 10 CFR 50.46 Report of Emergency Core Cooling System Evaluation Model Changes and Errors for Clinton Power Station IR 05000461/20240112024-09-0909 September 2024 Commercial Grade Dedication Inspection Report 05000461/2024011 IR 05000461/20240052024-08-29029 August 2024 Updated Inspection Plan and Assessment Follow-Up Letter for Clinton Power Station (Report 05000461/2024005) ML24222A3952024-08-23023 August 2024 Regulatory Audit Report to Support the Review of the Amendments to Revise Reactor Water Cleanup Valve Isolation Timing IR 05000461/20240022024-08-0909 August 2024 Integrated Inspection Report 05000461/2024002 ML24222A6772024-08-0909 August 2024 Response to Request for Additional Information for Application to Revise Technical Specifications to Adopt TSTF-591-A, Revise Risk Informed Completion Time (RICT) Program Revision 0 and Revise 10 CFR 50.69 License Condition ML24220A2772024-08-0707 August 2024 Request for Information for the NRC Quadrennial Comprehensive Engineering Team Inspection: Inspection Report 05000461/2025010 ML24212A2212024-08-0202 August 2024 License Renewal Regulatory Audit Regarding the Environmental Review of the License Renewal Application (EPID Number: L-2024-LNE-0000) (Docket Number: 50-461) ML24157A3242024-07-11011 July 2024 Issuance of Amendment No. 254 Revision of Reactor Water Cleanup Isolation Valve Timing ML24158A0772024-07-0303 July 2024 Notice of Consideration of Approval of Partial Site Release, Public Meeting, and Request for Comments (EPID L-2023-LLA-0088) - Letter ML24163A3252024-06-28028 June 2024 Aging Management Regulatory Audit Plan ML24163A3242024-06-28028 June 2024 LRA - Portal Letter ML24179A3112024-06-27027 June 2024 05000461; Notification of an NRC Biennial Licensed Operator Requalification Program Inspection and Request for Information ML24176A0272024-06-25025 June 2024 Confirmation of Initial License Examination, July 2025 RS-24-061, Constellation Energy Generation, LLC, Response to NRC Regulatory Issue Summary 2024-01, Preparation and Scheduling of Operator Licensing Examinations2024-06-14014 June 2024 Constellation Energy Generation, LLC, Response to NRC Regulatory Issue Summary 2024-01, Preparation and Scheduling of Operator Licensing Examinations ML24079A0762024-05-23023 May 2024 Issuance of Amendments to Adopt TSTF 264 ML24142A3352024-05-21021 May 2024 Quad Cities—Information Request to Support the NRC Annual Baseline Emergency Action Level and Emergency Plan Changes IR 05000461/20240122024-05-20020 May 2024 Biennial Problem Identification and Resolution Inspection Report Report 05000461/2024012 RS-24-055, 2023 Corporate Regulatory Commitment Change Summary Report2024-05-17017 May 2024 2023 Corporate Regulatory Commitment Change Summary Report RS-24-050, Additional Information Supporting Request for License Amendment to Revise Technical Specifications Related to Reactor Water Cleanup Isolation Instrumentation2024-05-0909 May 2024 Additional Information Supporting Request for License Amendment to Revise Technical Specifications Related to Reactor Water Cleanup Isolation Instrumentation IR 05000461/20240012024-05-0707 May 2024 Integrated Inspection Report 05000461/2024001 ML24103A1032024-05-0101 May 2024 SHPO Consultation Letter for Clinton License Renewal ML24120A3462024-04-30030 April 2024 Ltr. to Douglas Lankford, Chief, Miami Tribe of Oklahoma; Re., CPS Section 106 Consultation ML24120A3452024-04-30030 April 2024 Ltr. to Lester Randell, Chairman, Kickapoo Tribe of Indians of the Kickapoo Reservation in Kansas; Re., CPS Section 106 Consultation ML24103A0992024-04-30030 April 2024 Achp Scoping Letter for Clinton License Renewal ML24120A3432024-04-30030 April 2024 Ltr. to Darwin Kaskaske, Chairman, Kickapoo Tribe of Oklahoma; Re., CPS Section 106 Consultation ML24120A3442024-04-30030 April 2024 Ltr. to Gena Kakkak, Chairman, Menominee Indian Tribe of Wisconsin; Re., CPS Section 106 Consultation ML24103A1152024-04-30030 April 2024 Ltr. to Geoffrey Standing Bear, Principal Chief, the Osage Nation; Re., CPS Section 106 Consultation RS-24-041, Alternative Request to Utilize Code Case OMN-32, Alternative Requirements for Range and Accuracy of Pressure, Flow, and Differential Pressure Instruments Used in Pump Tests2024-04-30030 April 2024 Alternative Request to Utilize Code Case OMN-32, Alternative Requirements for Range and Accuracy of Pressure, Flow, and Differential Pressure Instruments Used in Pump Tests ML24107B0312024-04-29029 April 2024 Notice of Intent to Prepare an Environmental Impact Statement and Conduct Scoping Process ML24103A2042024-04-12012 April 2024 Constellation Energy Generation, LLC, Application to Revise Technical Specifications to Adopt TSTF-591-A, Revise Risk Informed Completion Time (RICT) Program Revision 0 and Revise 10 CFR 50.69 License Condition ML24089A2222024-04-11011 April 2024 LRA - Acceptance and Opportunity for Hearing - Letter ML24092A3452024-04-0101 April 2024 Updated Safety Analysis Report (Usar), Revision 23 RS-24-002, Constellation Energy Generation, LLC - Annual Property Insurance Status Report2024-04-0101 April 2024 Constellation Energy Generation, LLC - Annual Property Insurance Status Report ML24092A3552024-04-0101 April 2024 Request for Information for NRC License Renewal Inspection: Inspection Report 05000461/2024010 RS-24-023, Report on Status of Decommissioning Funding.2024-03-22022 March 2024 Report on Status of Decommissioning Funding. ML24045A1422024-02-29029 February 2024 License Renewal Application Receipt and Availability - Letter IR 05000461/20230062024-02-28028 February 2024 Annual Assessment Letter for Clinton Power Station (Report 05000461/2023006) ML24054A7112024-02-23023 February 2024 Request for Information for NRC Commercial Grade Dedication Inspection: Inspection Report 05000461/2024011 ML24045A0242024-02-14014 February 2024 Application for Renewed Operating License RS-24-005, Additional Information Supporting Request for Partial Site Release2024-02-0808 February 2024 Additional Information Supporting Request for Partial Site Release ML23338A1102024-02-0606 February 2024 Issuance of Amendment No. 252 Revision of Technical Specification 3.8.3, Diesel Fuel Oil, and Starting Air IR 05000461/20230042024-02-0202 February 2024 Integrated Inspection Report 05000461/2023004 ML23361A1572024-01-24024 January 2024 Audit Plan in Support of Review of License Amendment Request Regarding Revision of Technical Specifications Related to Reactor Water Cleanup Isolation ML24004A0792024-01-18018 January 2024 – Exemption from Select Requirements of 10 CFR Part 73 (EPID L-2023-LLE-0041 (Security Notifications, Reports, and Recordkeeping and Suspicious Activity Reporting)) IR 05000461/20234022023-12-27027 December 2023 Security Baseline Inspection Report 05000461/2023402 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 IR 05000461/20235012023-12-0505 December 2023 Emergency Preparedness Biennial Exercise Inspection Report 05000461/2023501 ML23284A2512023-11-22022 November 2023 Amendment No. 250 to Adopt TSTF-332 2024-09-09
[Table view] |
See also: IR 05000461/2018090
Text
February 8, 2018
EA-17-098 Mr. Bryan Senior VP, Exelon Generation Company, LLC President and CNO, Exelon Nuclear 4300 Winfield Road Warrenville, IL 60555
SUBJECT: NRC DENIAL OF EXELON GENERATION COMPANY, LLC, APPEAL OF CLINTON POWER STATION-FINAL SIGNIFICANCE DETERMINATION OF A WHITE FINDING; NRC INSPECTION REPORT 05000461/2018090
Dear Mr. Hanson:
On November 27, 2017, the U.S. Nuclear Regulatory Commission (NRC) provided Exelon Generation Company, LLC, (EGC), the final significance determination for a finding of low-to-moderate significance (White) (Agencywide Documents Access and Management System (ADAMS) Accession No. ML17331B161). This finding involved the failure to evaluate the change in the actual drop out voltages for replacement relays associated with the Division 1 Emergency Diesel Generator (EDG) room ventilation fan, which was a component subject to the requirements of Title 10 of the Code of Federal Regulations (CFR) Part 50, Appendix B.
The change in drop out voltages prevented the fan from operating during an undervoltage condition, resulting in the Division 1 EDG being unable to perform its intended safety function and becoming inoperable for a time longer than its Technical Specification allowed outage time.
In that same letter, the NRC stated that Exelon had 30 calendar days to appeal the NRC's final significance determination. The letter also stated that such an appeal would be considered to have merit only if it met the criteria given in Inspection Manual Chapter (IMC) 0609, Attachment 2, "Process for Appealing NRC Characterization of Inspection Findings (SDP Appeal Process)" (ADAMS Accession No. ML101400502).
By letter dated December 21, 2017, Exelon reiterated that a performance deficiency had occurred and did not dispute the violation or the assigned cross-cutting aspect (ADAMS Accession No. ML17355A562). However, Exelon appealed the NRC's characterization of the final significance determination of the White finding. Exelon asserted that the basis documented in the final significance determination letter appeared to be qualitative in nature, subjective, and based on an undefined alternative process. As a result, the NRC's final significance determination deviated from established NRC regulations and guidance currently used for safety-related equipment qualification. Therefore, Exelon stated that its appeal met the "lacked justification" merit standard provided in NRC IMC 0609, Attachment 2. This letter provides you the NRC's response to your December 21, 2017, appeal. The NRC concluded that Exelon's appeal did not have sufficient merit for review by the appeal process specified in IMC 0609 Attachment 2. Our evaluation of the appeal submitted by Exelon is provided in the enclosure to this letter. Accordingly, the NRC concluded that the final significance determination documented in NRC Inspection Report 05000461/2017010, is unchanged and, based on your previous response to the Notice of Violation, no further response is required. If you have any questions on our conclusions on the merit of your appeal, please contact Mr. Patrick Louden, Director, Division of Reactor Projects, at 630-829-9600, or Ms. Karla Stoedter, Chief, Reactor Projects Branch 1, at 630-829-9731. In accordance with 10 CFR 2.390 of the NRC's "Rules of Practice," a copy of this letter and its enclosure will be made available electronically for public inspection in the NRC Public Document Room and in ADAMS, accessible from the NRC Web site at http://www.nrc.gov/reading-rm/adams.html.
Sincerely,/RA/ K. Steven West Regional Administrator Docket No. 50-461 License No. NPF-62
Enclosure:
NRC Response to Final Significance Determination Appeal