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| | number = ML062790242 | | | number = ML062790242 |
| | issue date = 10/12/2006 | | | issue date = 10/12/2006 |
| | title = Dresden, Unit 3 - RAI Related to Safety Limit Minimum Critical Power Ratio (TAC No. MD2706) | | | title = RAI Related to Safety Limit Minimum Critical Power Ratio |
| | author name = Honcharik J | | | author name = Honcharik J |
| | author affiliation = NRC/NRR/ADRO/DORL/LPLIII-2 | | | author affiliation = NRC/NRR/ADRO/DORL/LPLIII-2 |
| | addressee name = Crane C M | | | addressee name = Crane C |
| | addressee affiliation = Exelon Generation Co, LLC | | | addressee affiliation = Exelon Generation Co, LLC |
| | docket = 05000249 | | | docket = 05000249 |
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| =Text= | | =Text= |
| {{#Wiki_filter:October 12, 2006Mr. Christopher M. Crane, President and Chief Nuclear Officer Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 | | {{#Wiki_filter:October 12, 2006 Mr. Christopher M. Crane, President and Chief Nuclear Officer Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 |
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| ==SUBJECT:== | | ==SUBJECT:== |
| DRESDEN NUCLEAR POWER STATION, UNIT 3 - REQUEST FORADDITIONAL INFORMATION RELATED TO SAFETY LIMIT MINIMUM CRITICAL POWER RATIO (TAC NO. MD2706) | | DRESDEN NUCLEAR POWER STATION, UNIT 3 - REQUEST FOR ADDITIONAL INFORMATION RELATED TO SAFETY LIMIT MINIMUM CRITICAL POWER RATIO (TAC NO. MD2706) |
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| ==Dear Mr. Crane:== | | ==Dear Mr. Crane:== |
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| By letter to the Nuclear Regulatory Commission (NRC) dated July 21, 2006, Exelon GenerationCompany, LLC submitted a request to revise the technical specifications to provide a cycle-specific safety limit minimum critical power ratio (SLMPCR) for operation of DresdenNuclear Power Station (DNPS) Unit 3, Cycle 20.The NRC staff is reviewing your submittal and has determined that additional information isrequired to complete the review. The specific information requested is addressed in the enclosure to this letter. During a discussion with your staff on October 12, 2006, it was agreed that you would provide a response within 10 days from the date of this letter. The NRC staff considers that timely responses to requests for additional information helpensure sufficient time is available for staff review and contribute toward the NRC's goal ofefficient and effective use of staff resources. If circumstances result in the need to revise the requested response date, please contact me at (301) 415-1157.Sincerely,/RA R. Kuntz for/John Honcharik, Project Manager Plant Licensing Branch III-2 Division of Operating Reactor Licensing Office of Nuclear Reactor RegulationDocket No. 50-249 | | By letter to the Nuclear Regulatory Commission (NRC) dated July 21, 2006, Exelon Generation Company, LLC submitted a request to revise the technical specifications to provide a cycle-specific safety limit minimum critical power ratio (SLMPCR) for operation of Dresden Nuclear Power Station (DNPS) Unit 3, Cycle 20. |
| | The NRC staff is reviewing your submittal and has determined that additional information is required to complete the review. The specific information requested is addressed in the enclosure to this letter. During a discussion with your staff on October 12, 2006, it was agreed that you would provide a response within 10 days from the date of this letter. |
| | The NRC staff considers that timely responses to requests for additional information help ensure sufficient time is available for staff review and contribute toward the NRCs goal of efficient and effective use of staff resources. If circumstances result in the need to revise the requested response date, please contact me at (301) 415-1157. |
| | Sincerely, |
| | /RA R. Kuntz for/ |
| | John Honcharik, Project Manager Plant Licensing Branch III-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-249 |
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| ==Enclosure:== | | ==Enclosure:== |
| Request for Additional Informationcc w/encl: See next page October 12, 2006Mr. Christopher M. Crane, President and Chief Nuclear Officer Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 | | |
| | Request for Additional Information cc w/encl: See next page |
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| | October 12, 2006 Mr. Christopher M. Crane, President and Chief Nuclear Officer Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 |
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| ==SUBJECT:== | | ==SUBJECT:== |
| DRESDEN NUCLEAR POWER STATION, UNIT 3 - REQUEST FORADDITIONAL INFORMATION RELATED TO SAFETY LIMIT MINIMUM CRITICAL POWER RATIO (TAC NO. MD2706) | | DRESDEN NUCLEAR POWER STATION, UNIT 3 - REQUEST FOR ADDITIONAL INFORMATION RELATED TO SAFETY LIMIT MINIMUM CRITICAL POWER RATIO (TAC NO. MD2706) |
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| ==Dear Mr. Crane:== | | ==Dear Mr. Crane:== |
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| By letter to the Nuclear Regulatory Commission (NRC) dated July 21, 2006, Exelon GenerationCompany, LLC submitted a request to revise the technical specifications to provi de a cycle-specific safety limit minimum critical power ratio (SLMPCR) for operation of Dresden Nuclear Power Station (DNPS) Unit 3, Cycle 20.The NRC staff is reviewing your submittal and has determined that additional information isrequired to complete the review. The specific information requested is addressed in the enclosure to this letter. During a discussion with your staff on October 12, 2006, it was agreed that you would provide a response within 10 days from the date of this letter. The NRC staff considers that timely responses to requests for additional information helpensure sufficient time is available for staff review and contribute toward the NRC's goal ofefficient and effective use of staff resources. If circumstances result in the need to revise the requested response date, please contact me at (301) 415-1157.Sincerely,/RA R. Kuntz for/John Honcharik, Project Manager Plant Licensing Branch III-2 Division of Operating Reactor Licensing Office of Nuclear Reactor RegulationDocket No. 50-249 | | By letter to the Nuclear Regulatory Commission (NRC) dated July 21, 2006, Exelon Generation Company, LLC submitted a request to revise the technical specifications to provide a cycle-specific safety limit minimum critical power ratio (SLMPCR) for operation of Dresden Nuclear Power Station (DNPS) Unit 3, Cycle 20. |
| | The NRC staff is reviewing your submittal and has determined that additional information is required to complete the review. The specific information requested is addressed in the enclosure to this letter. During a discussion with your staff on October 12, 2006, it was agreed that you would provide a response within 10 days from the date of this letter. |
| | The NRC staff considers that timely responses to requests for additional information help ensure sufficient time is available for staff review and contribute toward the NRCs goal of efficient and effective use of staff resources. If circumstances result in the need to revise the requested response date, please contact me at (301) 415-1157. |
| | Sincerely, |
| | /RA R. Kuntz for/ |
| | John Honcharik, Project Manager Plant Licensing Branch III-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-249 |
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| ==Enclosure:== | | ==Enclosure:== |
| Request for Additional Informationcc w/encl: See next pageDISTRIBUTION:PUBLICLPL3-2 R/FRidsNrrDorlLpl3-2 RidsNrrPMJHoncharikRidsNrrLADClarkeRidsAcrsAcnwMailCenter RidsOgcRpRidsRgn3MailCenterRidsNrrDorlDprRidsNrrDssSbwbBParks ADAMS Accession Number: ML062790242*Concurred via email 10/4/06.OFFICELPL3-2/PMLPL3-2/LA*SBWB/BCLPL3-2/BC NAMEJHoncharik;mw(RKuntz for)DClarkeGCranstonDCollinsDATE10/12/0610/12/200610/4/0610/12/06OFFICIAL RECORD COPY Dresden Nuclear Power Unit 3 cc: | | |
| Site Vice President - DresdenExelon Generation Company, LLC 6500 N. Dresden Road Morris, IL 60450-9765Plant Manager - Dresden Nuclear Power StationExelon Generation Company, LLC 6500 N. Dresden Road Morris, IL 60450-9765Manager Regulatory Assurance - DresdenExelon Generation Company, LLC 6500 N. Dresden Road Morris, IL 60450-9765U.S. Nuclear Regulatory CommissionDresden Resident Inspectors Office 6500 N. Dresden Road Morris, IL 60450-9766ChairmanGrundy County Board Administration Building 1320 Union Street Morris, IL 60450Regional Administrator, Region IIIU.S. Nuclear Regulatory Commission Suite 210 2443 Warrenville RoadLisle, IL 60532-4351Illinois Emergency Management Agency Division of Disaster Assistance & | | Request for Additional Information cc w/encl: See next page DISTRIBUTION: |
| Preparedness 110 East Adams Street Springfield, IL 62701-1109Document Control Desk - LicensingExelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555Senior Vice President - Midwest Operations Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555Director - Licensing & Regulatory AffairsExelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555Vice President - Regulatory & Legal AffairsExelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555Assistant General CounselExelon Generation Company, LLC 200 Exelon Way Kennett Square, PA 19348Manager Licensing - DresdenExelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 ENCLOSUREREQUEST FOR ADDITIONAL INFORMATIONSAFETY LIMIT MINIMUM CRITICAL POWER RATIODRESDEN NUCLEAR POWER STATION, UNIT 3DOCKET NO. 50-249In reviewing the Exelon Generation Company LLC's (Exelon's) submittal dated July 21, 2006,related to a request to revise the technical specifications to provide a cycle-specific safety limitminimum critical power ratio (SLMPCR) for operation of Dresden Nuclear Power Station, (DNPS) Unit 3, Cycle 20, the NRC staff has determined that the following information is neededin order to complete its review: 1.Section 2.0 of Attachment 4 to the July 21, 2006, submittal provides a justification onwhy the GE14 fuel analysis for Cycle 19 remains applicable and bounding for Cycle 20 operation. However, the NRC staff needs additional clarifying information concerninghow the fact that "the SLMCPR was established by contributions from GE14 fuel assemblies during Cycle 19" provides an adequate basis for concluding that the minimum critical power ratio for once-burned GE14 fuel assemblies remains valid. | | PUBLIC LPL3-2 R/F RidsNrrDorlLpl3-2 RidsNrrPMJHoncharik RidsNrrLADClarke RidsAcrsAcnwMailCenter RidsOgcRp RidsRgn3MailCenter RidsNrrDorlDpr RidsNrrDssSbwb BParks ADAMS Accession Number: ML062790242 *Concurred via email 10/4/06. |
| (RAI Category 2.c) RAI CATEGORIES(Select only one, most dominant category for each RAI question)1.More information is needed because of:a. complexity of requestb. first-of-a-kind nature of request | | OFFICE LPL3-2/PM LPL3-2/LA* SBWB/BC LPL3-2/BC NAME JHoncharik;mw DClarke GCranston DCollins (RKuntz for) |
| : c. NRC change in regulatory significance or focusd. NRC questions on previously used methodology or guidancee. licensee change to previously used methodology | | DATE 10/12/06 10/12/2006 10/4/06 10/12/06 OFFICIAL RECORD COPY |
| : f. licensee reduction in current safety margin2.The review can not be completed without additional explanation or clarification of:a. input variables or analytical assumptionsb. methodology used or results obtained | | |
| : c. applicability or bounding nature of third party analyses or data correlationsd. differences from NRC guidance documents (SRP, RG, etc.)e. no significant hazards consideration discussion | | Dresden Nuclear Power Unit 3 cc: |
| | Site Vice President - Dresden Senior Vice President - Midwest Operations Exelon Generation Company, LLC Exelon Generation Company, LLC 6500 N. Dresden Road 4300 Winfield Road Morris, IL 60450-9765 Warrenville, IL 60555 Plant Manager - Dresden Nuclear Power Station Director - Licensing & Regulatory Affairs Exelon Generation Company, LLC Exelon Generation Company, LLC 6500 N. Dresden Road 4300 Winfield Road Morris, IL 60450-9765 Warrenville, IL 60555 Manager Regulatory Assurance - Dresden Vice President - Regulatory & Legal Affairs Exelon Generation Company, LLC Exelon Generation Company, LLC 6500 N. Dresden Road 4300 Winfield Road Morris, IL 60450-9765 Warrenville, IL 60555 U.S. Nuclear Regulatory Commission Assistant General Counsel Dresden Resident Inspectors Office Exelon Generation Company, LLC 6500 N. Dresden Road 200 Exelon Way Morris, IL 60450-9766 Kennett Square, PA 19348 Chairman Manager Licensing - Dresden Grundy County Board Exelon Generation Company, LLC Administration Building 4300 Winfield Road 1320 Union Street Warrenville, IL 60555 Morris, IL 60450 Regional Administrator, Region III U.S. Nuclear Regulatory Commission Suite 210 2443 Warrenville Road Lisle, IL 60532-4351 Illinois Emergency Management Agency Division of Disaster Assistance & |
| | Preparedness 110 East Adams Street Springfield, IL 62701-1109 Document Control Desk - Licensing Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 |
| | |
| | REQUEST FOR ADDITIONAL INFORMATION SAFETY LIMIT MINIMUM CRITICAL POWER RATIO DRESDEN NUCLEAR POWER STATION, UNIT 3 DOCKET NO. 50-249 In reviewing the Exelon Generation Company LLCs (Exelons) submittal dated July 21, 2006, related to a request to revise the technical specifications to provide a cycle-specific safety limit minimum critical power ratio (SLMPCR) for operation of Dresden Nuclear Power Station, (DNPS) Unit 3, Cycle 20, the NRC staff has determined that the following information is needed in order to complete its review: |
| | : 1. Section 2.0 of Attachment 4 to the July 21, 2006, submittal provides a justification on why the GE14 fuel analysis for Cycle 19 remains applicable and bounding for Cycle 20 operation. However, the NRC staff needs additional clarifying information concerning how the fact that "the SLMCPR was established by contributions from GE14 fuel assemblies during Cycle 19" provides an adequate basis for concluding that the minimum critical power ratio for once-burned GE14 fuel assemblies remains valid. |
| | (RAI Category 2.c) |
| | ENCLOSURE |
| | |
| | RAI CATEGORIES (Select only one, most dominant category for each RAI question) |
| | : 1. More information is needed because of: |
| | : a. complexity of request |
| | : b. first-of-a-kind nature of request |
| | : c. NRC change in regulatory significance or focus |
| | : d. NRC questions on previously used methodology or guidance |
| | : e. licensee change to previously used methodology |
| | : f. licensee reduction in current safety margin |
| | : 2. The review can not be completed without additional explanation or clarification of: |
| | : a. input variables or analytical assumptions |
| | : b. methodology used or results obtained |
| | : c. applicability or bounding nature of third party analyses or data correlations |
| | : d. differences from NRC guidance documents (SRP, RG, etc.) |
| | : e. no significant hazards consideration discussion |
| : f. environmental considerations discussion | | : f. environmental considerations discussion |
| : g. applicable regulatory requirements discussion | | : g. applicable regulatory requirements discussion |
| : h. information that appears to be incorrect and needs to be corrected | | : h. information that appears to be incorrect and needs to be corrected |
| : i. response to previous RAI appears inadequate3.Reviewer requesting information even though the question is, or the question asks for:a. not directly related to the requestb. inconsistent with applicable codes, standards, RGs, or SRP sections | | : i. response to previous RAI appears inadequate |
| | : 3. Reviewer requesting information even though the question is, or the question asks for: |
| | : a. not directly related to the request |
| | : b. inconsistent with applicable codes, standards, RGs, or SRP sections |
| : c. information accessible from readily available sources and was explicitly referenced | | : c. information accessible from readily available sources and was explicitly referenced |
| : d. information does not appear needed given the precedent cases discussed in the request | | : d. information does not appear needed given the precedent cases discussed in the request |
| : e. information that is not safety significant or pertinent to the regulatory findingf. information that is known to engineers who work in the general technical area | | : e. information that is not safety significant or pertinent to the regulatory finding |
| : g. going beyond the current licensing basis and doesn't need to be asked | | : f. information that is known to engineers who work in the general technical area |
| : h. a formal commitment4.Other (please specify)}} | | : g. going beyond the current licensing basis and doesnt need to be asked |
| | : h. a formal commitment |
| | : 4. Other (please specify)}} |
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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
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SVPLTR 23-0037, Core Operating Limits Report for Cycle 292023-11-29029 November 2023
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RS-23-119, Supplemental Information Letter for Part 73 Exemption Request - Responses to Request for Confirmatory Information2023-11-10010 November 2023
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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
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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; Inspection Report 05000237/2023004
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Reassignment of the U.S. Nuclear Regulatory Commission Branch Chief in the Division of Operating Reactor Licensing for Plant Licensing Branch III
SVPLTR 23-0021, Registration of Use of Casks to Store Spent Fuel2023-06-20020 June 2023
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RS-23-078, Supplement to License Amendment Request to Revise Technical Specification 3.1.4, Control Rod Scram Times2023-06-16016 June 2023
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RS-23-077, Response to NRC Regulatory Issue Summary 2023-01, Preparation and Scheduling of Operator Licensing Examinations2023-06-16016 June 2023
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IR 05000237/20233012023-05-30030 May 2023
NRC Initial License Examination Report 05000237/2023301; 05000249/2023301
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SVPLTR 23-0018, Submittal of 2022 Annual Radiological Environmental Operating Report2023-05-15015 May 2023
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Integrated Inspection Report 05000237/2023001 and 05000249/2023001
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ML23118A3472023-05-0101 May 2023
County, 1 & 2; Nine Mile Point, 2; and Quad Cities, 1 & 2 - Correction of Amendment No. 193 Adoption of TSTF-306, Revision 2, Add Action to LCO 3.3.6.1 to Give Option to Isolate the Penetration EPID L-2022-LLA-0143
ML23114A2522023-04-28028 April 2023
Request to Use a Provision of a Later Edition of the ASME Boiler & Pressure Vessel Code, Section XI
IR 05000237/20234012023-04-26026 April 2023
Cyber Security Inspection Report 05000237/2023401 and 05000249/2023401
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County, 1 & 2; Nine Mile Point, 2; and Quad Cities, 1 & 2 - Issuance of Amendments to Adopt TSTF-306, Rev. 2, Add Action to LCO 3.3.6.1 to Give Option to Isolate the Penetration
IR 05000237/20235012023-04-21021 April 2023
Emergency Preparedness Biennial Exercise Inspection Report 05000237/2023501 and 05000249/2023501
ML23110A3202023-04-21021 April 2023
Information Request to Support the NRC Annual Baseline Emergency Action Level and Emergency Plan Changes Inspection
RS-23-057, Supplement to License Amendment Request Regarding Transition to GNF3 Fuel2023-04-17017 April 2023
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SVPLTR 23-0014, Annual Dose Report for 20222023-04-15015 April 2023
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ML23088A2242023-04-0505 April 2023
Regulatory Audit Report Regarding License Amendment Request to Transition to GNF3 Fuel
ML23087A0482023-03-28028 March 2023
Operator Licensing Examination Approval - Dresden Nuclear Power Station, April 2023
2024-02-02
[Table view]
Category:Request for Additional Information (RAI)
MONTHYEARML23264A7992023-09-21021 September 2023
NRR E-mail Capture - Final RAI - Constellation Energy Generation, LLC Fleet Request License Amendment Request to Adopt TSTF-580, Revision 1
ML23187A0462023-07-0606 July 2023
Notification of NRC Baseline Inspection and Request for Information; Inspection Report 05000237/2023004
ML23110A3202023-04-21021 April 2023
Information Request to Support the NRC Annual Baseline Emergency Action Level and Emergency Plan Changes Inspection
ML23052A0652023-02-21021 February 2023
NRR E-mail Capture - Dresden Units 2 and 3 - Request for Additional Information for Alternative Request RV-23H
ML23037A9192023-02-0707 February 2023
Request for Information for the NRC Quadrennial Comprehensive Engineering Team Inspection: Inspection Report 05000237/2023011 and 05000249/2023011
ML23019A0132023-01-12012 January 2023
NRR E-mail Capture - Final RAI Dresden 2 and 3 - License Amendment Pertaining to GNF3 Fuel Transition
ML22290A0842022-10-13013 October 2022
NRR E-mail Capture - Dresden 2 and 3 - RAI License Amendment Request Regarding New Fuel Storage Vault and Spent Fuel Storage Pool Criticality Methodologies
ML22270A1032022-09-27027 September 2022
Notification of NRC Baseline Inspection and Request for Information (05000249/2022004)
ML22203A0442022-07-21021 July 2022
Request for Additional Information (RAI)
ML22199A2422022-07-13013 July 2022
NRR E-mail Capture - Draft RAI Dresden 2 and 3 Proposed Alternative Related to Sblc Nozzle Inspection for the Sixth Inservice Inspection Interval
ML22041B5362022-02-10010 February 2022
NRR E-mail Capture - Constellation Energy Generation, LLC - Request for Additional Information Regarding Fleet License Amendment Request to Adopt TSTF-541
ML22020A0642022-01-13013 January 2022
NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding Proposed Fleet Alternative for Repair of Water Level Instrumentation Partial Penetration Nozzles
ML21256A1902021-09-10010 September 2021
NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding License Transfer Application
ML21244A4012021-08-10010 August 2021
(Final) Request for Information (RAI) Dresden, Units 1, 2, 3, and ISFSI Request for Exemptions from Portions of 10 CFR 50.47 and 10 CFR 50 Appendix E
ML21190A0192021-07-0808 July 2021
NRR E-mail Capture - Exelon Fleet - Request for Additional Information Regarding Adoption of TSTF-582 and TSTF-583-T
ML21144A2132021-05-24024 May 2021
NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding License Transfer Application
ML21097A2602021-04-0808 April 2021
Notification of an NRC Biennial Licensed Operator Requalification Program Inspection and Request for Information
ML21096A1752021-04-0606 April 2021
Notification of NRC Fire Protection Team Inspection Request for Information: Inspection Report 05000237/2021011; 05000249/2021011
ML21063A3202021-03-0202 March 2021
RAIs for Dresden, Units 2 and 3, Proposed Defueled Technical Specifications and Revised License Conditions for Permanently Defueled Condition (EPID L-2020-LLA-0239) (E-mail)
ML21062A0652021-03-0101 March 2021
NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding Proposed Fleet Alternative to Documentation Requirements for Pressure Retaining Bolting
ML21049A2572021-02-18018 February 2021
Request for Additional Information Byron/Dresden Proposed Changes to Site Emergency Plans to Support Post-Shutdown and Permanently Defueled Conditions (EPID-2020-LLA-0240 & EPID-2020-LLA-0237)
ML20337A4242020-12-0202 December 2020
Information Request for the Cyber-Security Full Implementation Inspection, Notification to Perform Inspection 05000237/2021401 and 05000249/2021401
ML20239A7982020-08-25025 August 2020
NRR E-mail Capture - Exelon Generation Company, LLC - Fleet License Amendment Request to Adopt TSTF-568, Revision 2
ML20231A7432020-08-18018 August 2020
Request for Additional Information (IOLB/HFT-RAI-1) Dresden MSIV LAR
ML20224A3532020-08-11011 August 2020
Notification of NRC Baseline Inspection and Request for Information; Inspection Report 05000249/2020004
ML20135H1972020-05-14014 May 2020
NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding Request to Extend Safety Relief Valve Test Interval
ML20094H0292020-03-27027 March 2020
Final: Dresden, Units 2 & 3 LAR Request for Additional Information to Modify Technical Specifications to Main Steam Isolation Valve Leakage Requirements
ML20071G2242020-03-11011 March 2020
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ML19330E1772019-11-25025 November 2019
RAI Dresden/Clinton Request for LAR to Modify TSs Following Adoption of TSTF-542
ML19226A3712019-08-14014 August 2019
Ltr. 08/14/19 Dresden Nuclear Power Station, Unit 2 - Notification of NRC Baseline Inspection and Request for Information; Inspection Report 05000237/2019004 (DRS-M.Domke)
ML18330A2382018-11-21021 November 2018
Initial Information Request (Part 1) for the Upcoming Phase IV License Renewal Inspection; Inspection Report 05000237(249)/2019010; E-Mailed 11/21/18 (DRS-J.Corujo-Sandin)
ML18067A1482018-03-0808 March 2018
Enclosurequest for Additional Information (Letter to P. R. Simpson Request for Additional Information Regarding Exelon Generating Company, Llc'S Decommissioning Funding Plan Update for Independent Spent Fuel Storage Installation)
ML17353A9492018-01-0909 January 2018
Supplemental Information Needed for Acceptance of License Amendment Request to Revise Technical Specification Requirements for Secondary Containment
ML17360A0082017-12-22022 December 2017
NRR E-mail Capture - Dresden Nuclear Power Station, Units 2 and 3 - RAIs to Support Request to Revise TS 5.5.12 Primary Containment Leakage Rate Testing Program
ML18002A4572017-12-22022 December 2017
NRR E-mail Capture - (External_Sender) (External) Dresden Nuclear Power Station, Units 2 and 3 - RAIs to Support Request to Revise TS 5.5.12 Primary Containment Leakage Rate Testing Program
ML17363A4422017-12-21021 December 2017
Supplemental Request for Information for 50.59 Inspection (DRS-A.Shaikh)
ML17342A7372017-12-0808 December 2017
NRR E-mail Capture - Dresden Nuclear Power Station, Units 2 and 3 - Draft RAIs to Support Request to Revise TS 5.5.12 Primary Containment Leakage Rate Testing Program
ML17191A2582017-07-11011 July 2017
RAI Related to License Amendment Request to Revise Technical Specifications to Adopt Technical Specification Task Force Traveler-542, Revision 2 (CAC NOS.MF9295 and MF9296)
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ML15232A6702015-09-29029 September 2015
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ML15261A3912015-09-17017 September 2015
Ltr. 09/17/2015 Dresden Nuclear Plant, Unit 2 - Notification of NRC Inspection and Request for Information - Baseline Inspection (Txb)
ML15232A7002015-08-31031 August 2015
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Request for Additional Information Relate to License Amendment Request Technical Specification Changes, to Add an NRC Approved Topical Report Reference
2023-09-21
[Table view] |
Text
October 12, 2006 Mr. Christopher M. Crane, President and Chief Nuclear Officer Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555
SUBJECT:
DRESDEN NUCLEAR POWER STATION, UNIT 3 - REQUEST FOR ADDITIONAL INFORMATION RELATED TO SAFETY LIMIT MINIMUM CRITICAL POWER RATIO (TAC NO. MD2706)
Dear Mr. Crane:
By letter to the Nuclear Regulatory Commission (NRC) dated July 21, 2006, Exelon Generation Company, LLC submitted a request to revise the technical specifications to provide a cycle-specific safety limit minimum critical power ratio (SLMPCR) for operation of Dresden Nuclear Power Station (DNPS) Unit 3, Cycle 20.
The NRC staff is reviewing your submittal and has determined that additional information is required to complete the review. The specific information requested is addressed in the enclosure to this letter. During a discussion with your staff on October 12, 2006, it was agreed that you would provide a response within 10 days from the date of this letter.
The NRC staff considers that timely responses to requests for additional information help ensure sufficient time is available for staff review and contribute toward the NRCs goal of efficient and effective use of staff resources. If circumstances result in the need to revise the requested response date, please contact me at (301) 415-1157.
Sincerely,
/RA R. Kuntz for/
John Honcharik, Project Manager Plant Licensing Branch III-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-249
Enclosure:
Request for Additional Information cc w/encl: See next page
October 12, 2006 Mr. Christopher M. Crane, President and Chief Nuclear Officer Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555
SUBJECT:
DRESDEN NUCLEAR POWER STATION, UNIT 3 - REQUEST FOR ADDITIONAL INFORMATION RELATED TO SAFETY LIMIT MINIMUM CRITICAL POWER RATIO (TAC NO. MD2706)
Dear Mr. Crane:
By letter to the Nuclear Regulatory Commission (NRC) dated July 21, 2006, Exelon Generation Company, LLC submitted a request to revise the technical specifications to provide a cycle-specific safety limit minimum critical power ratio (SLMPCR) for operation of Dresden Nuclear Power Station (DNPS) Unit 3, Cycle 20.
The NRC staff is reviewing your submittal and has determined that additional information is required to complete the review. The specific information requested is addressed in the enclosure to this letter. During a discussion with your staff on October 12, 2006, it was agreed that you would provide a response within 10 days from the date of this letter.
The NRC staff considers that timely responses to requests for additional information help ensure sufficient time is available for staff review and contribute toward the NRCs goal of efficient and effective use of staff resources. If circumstances result in the need to revise the requested response date, please contact me at (301) 415-1157.
Sincerely,
/RA R. Kuntz for/
John Honcharik, Project Manager Plant Licensing Branch III-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket No. 50-249
Enclosure:
Request for Additional Information cc w/encl: See next page DISTRIBUTION:
PUBLIC LPL3-2 R/F RidsNrrDorlLpl3-2 RidsNrrPMJHoncharik RidsNrrLADClarke RidsAcrsAcnwMailCenter RidsOgcRp RidsRgn3MailCenter RidsNrrDorlDpr RidsNrrDssSbwb BParks ADAMS Accession Number: ML062790242 *Concurred via email 10/4/06.
OFFICE LPL3-2/PM LPL3-2/LA* SBWB/BC LPL3-2/BC NAME JHoncharik;mw DClarke GCranston DCollins (RKuntz for)
DATE 10/12/06 10/12/2006 10/4/06 10/12/06 OFFICIAL RECORD COPY
Dresden Nuclear Power Unit 3 cc:
Site Vice President - Dresden Senior Vice President - Midwest Operations Exelon Generation Company, LLC Exelon Generation Company, LLC 6500 N. Dresden Road 4300 Winfield Road Morris, IL 60450-9765 Warrenville, IL 60555 Plant Manager - Dresden Nuclear Power Station Director - Licensing & Regulatory Affairs Exelon Generation Company, LLC Exelon Generation Company, LLC 6500 N. Dresden Road 4300 Winfield Road Morris, IL 60450-9765 Warrenville, IL 60555 Manager Regulatory Assurance - Dresden Vice President - Regulatory & Legal Affairs Exelon Generation Company, LLC Exelon Generation Company, LLC 6500 N. Dresden Road 4300 Winfield Road Morris, IL 60450-9765 Warrenville, IL 60555 U.S. Nuclear Regulatory Commission Assistant General Counsel Dresden Resident Inspectors Office Exelon Generation Company, LLC 6500 N. Dresden Road 200 Exelon Way Morris, IL 60450-9766 Kennett Square, PA 19348 Chairman Manager Licensing - Dresden Grundy County Board Exelon Generation Company, LLC Administration Building 4300 Winfield Road 1320 Union Street Warrenville, IL 60555 Morris, IL 60450 Regional Administrator, Region III U.S. Nuclear Regulatory Commission Suite 210 2443 Warrenville Road Lisle, IL 60532-4351 Illinois Emergency Management Agency Division of Disaster Assistance &
Preparedness 110 East Adams Street Springfield, IL 62701-1109 Document Control Desk - Licensing Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555
REQUEST FOR ADDITIONAL INFORMATION SAFETY LIMIT MINIMUM CRITICAL POWER RATIO DRESDEN NUCLEAR POWER STATION, UNIT 3 DOCKET NO. 50-249 In reviewing the Exelon Generation Company LLCs (Exelons) submittal dated July 21, 2006, related to a request to revise the technical specifications to provide a cycle-specific safety limit minimum critical power ratio (SLMPCR) for operation of Dresden Nuclear Power Station, (DNPS) Unit 3, Cycle 20, the NRC staff has determined that the following information is needed in order to complete its review:
- 1. Section 2.0 of Attachment 4 to the July 21, 2006, submittal provides a justification on why the GE14 fuel analysis for Cycle 19 remains applicable and bounding for Cycle 20 operation. However, the NRC staff needs additional clarifying information concerning how the fact that "the SLMCPR was established by contributions from GE14 fuel assemblies during Cycle 19" provides an adequate basis for concluding that the minimum critical power ratio for once-burned GE14 fuel assemblies remains valid.
(RAI Category 2.c)
ENCLOSURE
RAI CATEGORIES (Select only one, most dominant category for each RAI question)
- 1. More information is needed because of:
- a. complexity of request
- b. first-of-a-kind nature of request
- c. NRC change in regulatory significance or focus
- d. NRC questions on previously used methodology or guidance
- e. licensee change to previously used methodology
- f. licensee reduction in current safety margin
- 2. The review can not be completed without additional explanation or clarification of:
- a. input variables or analytical assumptions
- b. methodology used or results obtained
- c. applicability or bounding nature of third party analyses or data correlations
- d. differences from NRC guidance documents (SRP, RG, etc.)
- e. no significant hazards consideration discussion
- f. environmental considerations discussion
- g. applicable regulatory requirements discussion
- h. information that appears to be incorrect and needs to be corrected
- i. response to previous RAI appears inadequate
- 3. Reviewer requesting information even though the question is, or the question asks for:
- a. not directly related to the request
- b. inconsistent with applicable codes, standards, RGs, or SRP sections
- c. information accessible from readily available sources and was explicitly referenced
- d. information does not appear needed given the precedent cases discussed in the request
- e. information that is not safety significant or pertinent to the regulatory finding
- f. information that is known to engineers who work in the general technical area
- g. going beyond the current licensing basis and doesnt need to be asked
- h. a formal commitment
- 4. Other (please specify)
