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| {{#Wiki_filter:June 15, 2006Mr. Christopher M. Crane, President and Chief Nuclear Officer Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 | | {{#Wiki_filter:June 15, 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:== |
| LASALLE COUNTY STATION, UNITS 1 AND 2 - REQUEST FOR ADDITIONALINFORMATION RELATED TO ULTIMATE HEAT SINK LICENSE AMENDMENT REQUEST (TAC NOS. MD0336 AND MD0337) | | LASALLE COUNTY STATION, UNITS 1 AND 2 - REQUEST FOR ADDITIONAL INFORMATION RELATED TO ULTIMATE HEAT SINK LICENSE AMENDMENT REQUEST (TAC NOS. MD0336 AND MD0337) |
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| ==Dear Mr. Crane:== | | ==Dear Mr. Crane:== |
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| By letter to the Nuclear Regulatory Commission (NRC) dated March 13, 2006 (AgencywideDocuments Access and Management System Accession No. ML060720507), Exelon Generation Company, LLC submitted a request to change the technical specifications (TS) related to TS 3.7.3, "Ultimate Heat Sink," for the LaSalle County Station, Units 1 and 2.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 June 1, 2006, it was agreed that LaSalle County Station would provide a response within 30 days of 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) 415-3154.Sincerely,/RA/Stephen P. Sands, Project Manager Plant Licensing Branch III-2 Division of Operating Reactor Licensing Office of Nuclear Reactor RegulationDocket Nos. 50-373 and 50-374 | | By letter to the Nuclear Regulatory Commission (NRC) dated March 13, 2006 (Agencywide Documents Access and Management System Accession No. ML060720507), Exelon Generation Company, LLC submitted a request to change the technical specifications (TS) related to TS 3.7.3, Ultimate Heat Sink, for the LaSalle County Station, Units 1 and 2. |
| | 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 June 1, 2006, it was agreed that LaSalle County Station would provide a response within 30 days of 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) 415-3154. |
| | Sincerely, |
| | /RA/ |
| | Stephen P. Sands, Project Manager Plant Licensing Branch III-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-373 and 50-374 |
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| ==Enclosure:== | | ==Enclosure:== |
| Request for Additional Informationcc w/encl: See next page June 15, 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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| | June 15, 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:== |
| LASALLE COUNTY STATION, UNITS 1 AND 2 - REQUEST FOR ADDITIONALINFORMATION RELATED TO ULTIMATE HEAT SINK LICENSE AMENDMENT REQUEST (TAC NOS. MD0336 AND MD0337) | | LASALLE COUNTY STATION, UNITS 1 AND 2 - REQUEST FOR ADDITIONAL INFORMATION RELATED TO ULTIMATE HEAT SINK LICENSE AMENDMENT REQUEST (TAC NOS. MD0336 AND MD0337) |
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| ==Dear Mr. Crane:== | | ==Dear Mr. Crane:== |
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| By letter to the Nuclear Regulatory Commission (NRC) dated March 13, 2006 (AgencywideDocuments Access and Management System Accession No. ML060720507), Exelon Generation Company, LLC submitted a request to change the technical specifications (TS) related to TS 3.7.3, "Ultimate Heat Sink," for the LaSalle County Station, Units 1 and 2.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 June 1, 2006, it was agreed that LaSalle County Station would provide a response within 30 days of 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) 415-3154.Sincerely,/RA/Stephen P. Sands, Project Manager Plant Licensing Branch III-2 Division of Operating Reactor Licensing Office of Nuclear Reactor RegulationDocket Nos. 50-373 and 50-374 | | By letter to the Nuclear Regulatory Commission (NRC) dated March 13, 2006 (Agencywide Documents Access and Management System Accession No. ML060720507), Exelon Generation Company, LLC submitted a request to change the technical specifications (TS) related to TS 3.7.3, Ultimate Heat Sink, for the LaSalle County Station, Units 1 and 2. |
| | 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 June 1, 2006, it was agreed that LaSalle County Station would provide a response within 30 days of 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) 415-3154. |
| | Sincerely, |
| | /RA/ |
| | Stephen P. Sands, Project Manager Plant Licensing Branch III-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-373 and 50-374 |
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| ==Enclosure:== | | ==Enclosure:== |
| Request for Additional Information DISTRIBUTION:PUBLICLPL3-2 R/FRidsNrrDorlLpl3-2 RidsNrrPMSSandsRidsNrrLADClarkeRidsAcrsAcnwMailCenterRidsOgcRpRidsRgn3MailCenterRidsNrrDorlDprRidsNrrDeEicbADAMS Accession Number: ML061530295OFFICELPL3-2/PMLPL3-2/LAEICB/BCLPL3-2/BCNAMESSands:mwDClarkeAHowe*DCollinsDATE06/15/200606/15/200606/2/200606/15/2006OFFICIAL RECORD COPY LaSalle County Station Units 1 and 2 cc: | | |
| Site Vice President - LaSalle County StationExelon Generation Company, LLC 2601 North 21st Road Marseilles, IL 61341-9757LaSalle County Station Plant ManagerExelon Generation Company, LLC 2601 North 21st Road Marseilles, IL 61341-9757Regulatory Assurance Manager - LaSalleExelon Generation Company, LLC 2601 North 21st Road Marseilles, IL 61341-9757U.S. Nuclear Regulatory CommissionLaSalle Resident Inspectors Office 2605 North 21st Road Marseilles, IL 61341-9756Phillip P. Steptoe, EsquireSidley and Austin One First National Plaza Chicago, IL 60603Assistant Attorney General100 W. Randolph St. Suite 12 Chicago, IL 60601ChairmanLaSalle County Board 707 Etna Road Ottawa, IL 61350Attorney General500 S. Second Street Springfield, IL 62701ChairmanIllinois Commerce Commission 527 E. Capitol Avenue, Leland Building Springfield, IL 62706Robert Cushing, Chief, Public Utilities DivisionIllinois Attorney General's Office 100 W. Randolph Street Chicago, IL 60601Regional AdministratorU.S. NRC, Region III 801 Warrenville RoadLisle, IL 60532-4351Illinois Emergency Management Agency Division of Disaster Assistance & | | Request for Additional Information DISTRIBUTION: |
| Preparedness 110 East Adams Street Springfield, IL 62701-1109Document Control Desk - LicensingExelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555Senior Vice President of OperationsExelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555Vice President - Licensing and Regulatory Affairs Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 LaSalle County Station Units 1 and 2- 2 -Director - Licensing and Regulatory AffairsExelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555Assistant General CounselExelon Generation Company, LLC 200 Exelon Way Kennett Square, PA 19348Manager Licensing - Dresden, Quad Cities and ClintonExelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 ENCLOSUREREQUEST FOR ADDITIONAL INFORMATIONLASALLE COUNTY STATION, UNITS 1 AND 2DOCKET NOS. 50-373 AND 50-374In reviewing the Exelon Generation Company's (Exelon's) license amendment request submittaldated March 13, 2006, related to ultimate heat sink (UHS) for the LaSalle County Station, Units1 and 2 (LaSalle), the NRC staff has determined that the following information is needed inorder to complete its review:1.Show that the temperatures in the two circulating water intake canals are sufficientlyrepresentative of each other and of the UHS temperature as assumed in the safety analysis to support the use of the averaged temperature at both units. Show how theserelationships remain valid when one unit is out of service, or explain how this will beaccommodated in the technical specification (TS) for the other unit. (Category 2.a)2. Describe any thermowell modifications or adaptors required for the installation of theresistance temperature detectors (RTDs). Confirm that the RTD insertion length is compatible with the thermowells. Identify any seismic requirements applicable to this installation; for example, if safety-related cooling water is extracted from these canals, there may be seismic II/I considerations. (Category 2.a)3. The request indicates that the existing thermocouple wires will be used for the RTDs,and that temperature compensator modules will be used to correct any signal effects. Where will these temperature compensator modules be located? What is the specificcompensation provided, and how does this account for: (Category 2.a)(a)thermocouple wire resistence, especially considering that the RTDs are using a2-wire, rather than 3- or 4-wire configuration, and (b)dissimilar metallic junction at both ends of the thermocouple cables. Pleaseexplain how these effects are addressed in the uncertainty evaluation. 4. Provide the detailed uncertainty evaluation, showing the source of all input informationand the full derivation of all results and conclusions. (Category 2.a)5. Describe the configuration (in regard to the acquisition and exchange of thesetemperature measurement data) of the Data Acquisition System, Plant Process Computer for each unit, and the data communications in each unit and between units as they presently exist and as they would exist following the implementation of the requested change. (Category 2.a)6. What method or procedures for determining the UHS temperature reading, used tosatisfy the TS requirement, will be used after all four new RTDs are installed? Includedetails on handling failed inputs (if one RTD fails in one unit, if one RTD fails in each unit, if two fail in one unit, if two fail in one unit and one fails in the other unit).
| | PUBLIC LPL3-2 R/F RidsNrrDorlLpl3-2 RidsNrrPMSSands RidsNrrLADClarke RidsAcrsAcnwMailCenter RidsOgcRp RidsRgn3MailCenter RidsNrrDorlDpr RidsNrrDeEicb ADAMS Accession Number: ML061530295 OFFICE LPL3-2/PM LPL3-2/LA EICB/BC LPL3-2/BC NAME SSands:mw DClarke AHowe* DCollins DATE 06/15/2006 06/15/2006 06/2/2006 06/15/2006 OFFICIAL RECORD COPY |
| (Category 2.a) 7. How are the temperature values presented to the operators and system engineerincluding any alarms, warnings, or other identification of status or failures? | | |
| (Category 2.a)8. Describe the type of RTD to be used, and the calibrated range of the temperaturemeasurement. (Category 2.a)9. How frequently will the new RTD readings be sampled and how frequently are theassociated calculations performed? (Category 2.a)10. The statistical theory upon which the assumed accuracy improvement is partly basedrequires statistical independence among the measurements. How are the common-mode uncertainty elements, such as environmental effects and common maintenance and test equipment, accounted for in the analysis? (Category 2.a)11. How were any aging effects on RTD and component accuracy accounted for in theuncertainty calculations? (Category 2.a)12.Describe the calibration and surveillance procedures to be implemented to maintain theaccuracy of the individual temperature measurements. (Category 2.a) 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 | | LaSalle County Station Units 1 and 2 cc: |
| : c. NRC change in regulatory significance or focusd. NRC questions on previously used methodology or guidancee. licensee change to previously used methodology | | Site Vice President - LaSalle County Station Robert Cushing, Chief, Public Utilities Division Exelon Generation Company, LLC Illinois Attorney General's Office 2601 North 21st Road 100 W. Randolph Street Marseilles, IL 61341-9757 Chicago, IL 60601 LaSalle County Station Plant Manager Regional Administrator Exelon Generation Company, LLC U.S. NRC, Region III 2601 North 21st Road 801 Warrenville Road Marseilles, IL 61341-9757 Lisle, IL 60532-4351 Regulatory Assurance Manager - LaSalle Illinois Emergency Management Exelon Generation Company, LLC Agency 2601 North 21st Road Division of Disaster Assistance & |
| : 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 | | Marseilles, IL 61341-9757 Preparedness 110 East Adams Street U.S. Nuclear Regulatory Commission Springfield, IL 62701-1109 LaSalle Resident Inspectors Office 2605 North 21st Road Document Control Desk - Licensing Marseilles, IL 61341-9756 Exelon Generation Company, LLC 4300 Winfield Road Phillip P. Steptoe, Esquire Warrenville, IL 60555 Sidley and Austin One First National Plaza Senior Vice President of Operations Chicago, IL 60603 Exelon Generation Company, LLC 4300 Winfield Road Assistant Attorney General Warrenville, IL 60555 100 W. Randolph St. Suite 12 Chicago, IL 60601 Vice President - Licensing and Regulatory Affairs Chairman Exelon Generation Company, LLC LaSalle County Board 4300 Winfield Road 707 Etna Road Warrenville, IL 60555 Ottawa, IL 61350 Attorney General 500 S. Second Street Springfield, IL 62701 Chairman Illinois Commerce Commission 527 E. Capitol Avenue, Leland Building Springfield, IL 62706 |
| : 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 | | |
| | LaSalle County Station Units 1 and 2 Director - Licensing and Regulatory Affairs Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 Assistant General Counsel Exelon Generation Company, LLC 200 Exelon Way Kennett Square, PA 19348 Manager Licensing - Dresden, Quad Cities and Clinton Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 |
| | |
| | REQUEST FOR ADDITIONAL INFORMATION LASALLE COUNTY STATION, UNITS 1 AND 2 DOCKET NOS. 50-373 AND 50-374 In reviewing the Exelon Generation Companys (Exelons) license amendment request submittal dated March 13, 2006, related to ultimate heat sink (UHS) for the LaSalle County Station, Units 1 and 2 (LaSalle), the NRC staff has determined that the following information is needed in order to complete its review: |
| | : 1. Show that the temperatures in the two circulating water intake canals are sufficiently representative of each other and of the UHS temperature as assumed in the safety analysis to support the use of the averaged temperature at both units. Show how these relationships remain valid when one unit is out of service, or explain how this will be accommodated in the technical specification (TS) for the other unit. (Category 2.a) |
| | : 2. Describe any thermowell modifications or adaptors required for the installation of the resistance temperature detectors (RTDs). Confirm that the RTD insertion length is compatible with the thermowells. Identify any seismic requirements applicable to this installation; for example, if safety-related cooling water is extracted from these canals, there may be seismic II/I considerations. (Category 2.a) |
| | : 3. The request indicates that the existing thermocouple wires will be used for the RTDs, and that temperature compensator modules will be used to correct any signal effects. |
| | Where will these temperature compensator modules be located? What is the specific compensation provided, and how does this account for: (Category 2.a) |
| | (a) thermocouple wire resistence, especially considering that the RTDs are using a 2-wire, rather than 3- or 4-wire configuration, and (b) dissimilar metallic junction at both ends of the thermocouple cables. Please explain how these effects are addressed in the uncertainty evaluation. |
| | : 4. Provide the detailed uncertainty evaluation, showing the source of all input information and the full derivation of all results and conclusions. (Category 2.a) |
| | : 5. Describe the configuration (in regard to the acquisition and exchange of these temperature measurement data) of the Data Acquisition System, Plant Process Computer for each unit, and the data communications in each unit and between units as they presently exist and as they would exist following the implementation of the requested change. (Category 2.a) |
| | : 6. What method or procedures for determining the UHS temperature reading, used to satisfy the TS requirement, will be used after all four new RTDs are installed? Include details on handling failed inputs (if one RTD fails in one unit, if one RTD fails in each unit, if two fail in one unit, if two fail in one unit and one fails in the other unit). |
| | (Category 2.a) |
| | ENCLOSURE |
| | : 7. How are the temperature values presented to the operators and system engineer including any alarms, warnings, or other identification of status or failures? |
| | (Category 2.a) |
| | : 8. Describe the type of RTD to be used, and the calibrated range of the temperature measurement. (Category 2.a) |
| | : 9. How frequently will the new RTD readings be sampled and how frequently are the associated calculations performed? (Category 2.a) |
| | : 10. The statistical theory upon which the assumed accuracy improvement is partly based requires statistical independence among the measurements. How are the common-mode uncertainty elements, such as environmental effects and common maintenance and test equipment, accounted for in the analysis? (Category 2.a) |
| | : 11. How were any aging effects on RTD and component accuracy accounted for in the uncertainty calculations? (Category 2.a) |
| | : 12. Describe the calibration and surveillance procedures to be implemented to maintain the accuracy of the individual temperature measurements. (Category 2.a) |
| | |
| | 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 05000373/20240022024-08-13013 August 2024
County Station - Integrated Inspection Report 05000373/2024002 and 05000374/2024002
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
IR 05000373/20244202024-08-0505 August 2024
County Station - Security Baseline Inspection Report 05000373 2024420 and 05000374 2024420
ML24208A0962024-07-25025 July 2024
57243-EN 57243 - Rssc Wire & Cable LLC, Dba Marmon - Part 21 Notification
RS-24-064, Nuclear Radiological Emergency Plan Document Revisions2024-06-28028 June 2024
Nuclear Radiological Emergency Plan Document Revisions
ML24178A2522024-06-27027 June 2024
County Station – Acknowledgement of Response to NRC Inspection Report 05000373/2024001 and 05000374/2024001 and Disputed Non-Cited Violation
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
IR 05000373/20240102024-05-29029 May 2024
County Station - Commercial Grade Dedication Inspection Report 05000373/2024010 and 05000374/2024010
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
RS-24-055, 2023 Corporate Regulatory Commitment Change Summary Report2024-05-17017 May 2024
2023 Corporate Regulatory Commitment Change Summary Report
IR 05000373/20240012024-05-13013 May 2024
County Station - Integrated Report 05000373/2024001 and 05000374/2024001
RS-24-038, Relief Request Concerning Extension of Permanent Relief from Ultrasonic Examination of Reactor Pressure Vessel Circumferential Shell Welds2024-05-0202 May 2024
Relief Request Concerning Extension of Permanent Relief from Ultrasonic Examination of Reactor Pressure Vessel Circumferential Shell Welds
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
ML24108A1562024-04-15015 April 2024
Updated Final Safety Analysis Report (Ufsar), Revision 26 and Fire Protection Report (Fpr), Revision 11
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
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
ML24071A2122024-03-12012 March 2024
County Station - Information Request for the Cyber-Security Baseline Inspection, Notification to Perform Inspection
IR 05000373/20230062024-02-28028 February 2024
Annual Assessment Letter for Lasalle County Station, Units 1 and 2 (Report 05000373/2023006; 05000374/2023006)
RS-24-014, Annual 10 CFR 50.46 Report of Emergency Core Cooling System Evaluation Model Changes and Errors2024-02-22022 February 2024
Annual 10 CFR 50.46 Report of Emergency Core Cooling System Evaluation Model Changes and Errors
IR 05000373/20230042024-01-24024 January 2024
County Station - Integrated Inspection Report 05000373/2023004 and 05000374/2023004
ML24024A1332024-01-24024 January 2024
Confirmation of Initial License Examination
IR 05000373/20230122024-01-18018 January 2024
County Station - Biennial Problem Identification and Resolution Inspection Report 05000373/2023012 and 05000374/2023012
ML23354A2902024-01-0505 January 2024
Exemption from Select Requirements of 10 CFR Part 73 (EPID L-2023-LLE-0028 (Security Notifications, Reports, and Recordkeeping and Suspicious Activity Reporting))
ML23360A6082023-12-27027 December 2023
County Station Request for Information for NRC Commercial Grade Dedication Inspection: Inspection Report 05000373/2024010 and 05000374/2024010
ML23278A1292023-12-14014 December 2023
Units 1 & 2; Limerick, Units 1 & 2; Nine Mile Point, Units 1 & 2; and Peach Bottom, Units 2 & 3 -Revision to Approved Alternatives to Use Boiling Water Reactor Vessel and Internals Project Guidelines
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
ML23317A1192023-11-10010 November 2023
Constellation Energy Generation, LLC - 2023 Annual Report - Guarantees of Payment of Deferred Premiums
RS-23-120, 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
IR 05000373/20230032023-11-0909 November 2023
County Station Integrated Inspection Report 05000373/2023003, 05000374/2023003, and 07200070/2023001
ML23286A2602023-11-0808 November 2023
Issuance of Amendment Nos. 260 and 245 to Renewed Facility Operating Licenses Relocation of Pressure and Temperature Limit Curves to the Pressure Temperature Report
IR 05000373/20234012023-11-0707 November 2023
County Station Security Baseline Inspection Report 05000373/2023401 and 05000374/2023401
RS-23-103, Request for Exemption from Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Implementation2023-10-13013 October 2023
Request for Exemption from Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Implementation
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
IR 05000374/20230102023-10-11011 October 2023
NRC Inspection Report 05000374/2023010
IR 05000373/20233012023-09-15015 September 2023
Errata to NRC Initial License Examination Report 05000373/2023301; 05000374/2023301
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
RS-23-087, Revision to Approved Alternatives Associated with the Use of the BWRVIP Guidelines in Lieu of Specific ASME Code Requirements on Reactor2023-08-0404 August 2023
Revision to Approved Alternatives Associated with the Use of the BWRVIP Guidelines in Lieu of Specific ASME Code Requirements on Reactor
ML23212A9012023-08-0303 August 2023
Regulatory Audit Report to Support the Review of the Amendments to Relocation of the Pressure Temperature Limit Curves to the Pressure and Temperature Limits Report
IR 05000373/20230022023-08-0101 August 2023
County Station - Integrated Inspection Report 05000373/2023002 and 05000374/2023002
ML23208A3182023-07-27027 July 2023
Notification of an NRC Biennial Licensed Operator Requalification Program Inspection and RFI
RS-23-084, Response to Request for Additional Information Regarding the Application to Revise Design Basis to Allow Use of Plastic Section Properties in Lower Downcomer Braces Analysis2023-07-24024 July 2023
Response to Request for Additional Information Regarding the Application to Revise Design Basis to Allow Use of Plastic Section Properties in Lower Downcomer Braces Analysis
ML23192A5272023-07-12012 July 2023
NRC Initial License Examination Report 05000373/2023301; 05000374/2023301
ML23186A2062023-07-0606 July 2023
Information Request for a NRC Post-Approval Site Inspection for License Renewal 05000374/2023010
ML23181A1502023-06-30030 June 2023
Combined Response to Request for Additional Information and Supplemental Information in Support of LAR to Relocate Pressure and Temperature Limit Curves to the Pressure and Temperature Limits Report
ML23178A2422023-06-28028 June 2023
Reassignment of the U.S. Nuclear Regulatory Commission Branch Chief in the Division of Operating Reactor Licensing for Plant Licensing Branch III
IR 05000373/20230112023-06-26026 June 2023
County Station - Quadrennial Fire Protection Team Inspection Report 05000373/2023011 and 05000374/2023011
RS-23-077, Response to NRC Regulatory Issue Summary 2023-01, Preparation and Scheduling of Operator Licensing Examinations2023-06-16016 June 2023
Response to NRC Regulatory Issue Summary 2023-01, Preparation and Scheduling of Operator Licensing Examinations
ML23167A0352023-06-16016 June 2023
Registration of Use of Cask to Store Spent Fuel
ML23171A9562023-06-12012 June 2023
Post Exam Ltr
2024-08-09
[Table view]
Category:Request for Additional Information (RAI)
MONTHYEARML24197A0162024-07-12012 July 2024
NRR E-mail Capture - Final RAI - Constellation Energy Generation, LLC - Fleet Request - License Amendment Request to Adopt TSTF-591
ML24142A3352024-05-21021 May 2024
Quad Cities—Information Request to Support the NRC Annual Baseline Emergency Action Level and Emergency Plan Changes
ML23360A6082023-12-27027 December 2023
County Station Request for Information for NRC Commercial Grade Dedication Inspection: Inspection Report 05000373/2024010 and 05000374/2024010
ML23264A7992023-09-21021 September 2023
NRR E-mail Capture - Final RAI - Constellation Energy Generation, LLC Fleet Request License Amendment Request to Adopt TSTF-580, Revision 1
ML23208A3182023-07-27027 July 2023
Notification of an NRC Biennial Licensed Operator Requalification Program Inspection and RFI
ML23153A1562023-06-0202 June 2023
NRR E-mail Capture - RAI LaSalle pressure-temperature Limits Report (PTLR) Amendment Request
ML23150A2482023-05-25025 May 2023
NRR E-mail Capture - RAI Re LaSalle Downcomer Analysis Amendment Request
ML23110A3202023-04-21021 April 2023
Information Request to Support the NRC Annual Baseline Emergency Action Level and Emergency Plan Changes Inspection
ML22361A0792022-12-27027 December 2022
Notification of NRC Baseline Inspection and Request for Information (05000374/2023001)
ML22256A0112022-09-12012 September 2022
NRR E-mail Capture - Request for Additional Information LaSalle County Station, Units 1 and 2 and Quad Cities Nuclear Power Station, Units 1 and 2 License Amendments Related to Fuel Storage
ML22138A4112022-05-18018 May 2022
NRR E-mail Capture - Lasalle 1 and 2 - (RAI) License Amendment Request Regarding New Fuel Storage Vault and Spent Fuel Storage Pool Criticality Methodologies, with Changes to TS Sections 4.3.1 and 5.6.5 (EPID-L-2021-LLA-0124)
ML22126A0392022-05-0606 May 2022
NRR E-mail Capture - Lasalle 1 and 2 Draft (RAI) License Amendment Request Regarding New Fuel Storage Vault and Spent Fuel Storage Pool Criticality Methodologies, with Proposed Changes to TS Sections 4.3.1 and 5.6.5
ML22097A0832022-04-0707 April 2022
County Station Information Request for the Cyber-Security Baseline Inspection, Notification to Perform Inspection 05000373/2022403 and 05000374/2022403
ML22062B0232022-03-0303 March 2022
NRR E-mail Capture - EPID-L-2022-LLR-0028, LaSalle Unit 1, Request for Additional Information (Rai), LaSalle Unit 1, Relief Request I4R-13 Relief from Code Examinations for 1B33-F060A and 1B33-F060B Repairs
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
ML21292A1782021-10-19019 October 2021
Information Request for a NRC Post-Approval Site Inspection for License Renewal 05000373/2022010
ML21256A1902021-09-10010 September 2021
NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding License Transfer Application
ML21207A0072021-07-26026 July 2021
NRR E-mail Capture - La Salle Units 1 and 2 - Request for Additional Information (RAI) License Amendment Request to Incorporate Licensing Topical Report NEDE-33885P-A, Revision 1, GNF CRDA Application Methodology(EPID-L-2021-LLA-0016)
ML21190A0192021-07-0808 July 2021
NRR E-mail Capture - Exelon Fleet - Request for Additional Information Regarding Adoption of TSTF-582 and TSTF-583-T
ML21187A2972021-07-0707 July 2021
Information Request for an NRC Triennial 10 CFR 50.59 (Evaluation of Changes, Tests, and Experiments) Baseline Inspection
ML21144A2132021-05-24024 May 2021
NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding License Transfer Application
ML21117A0342021-05-0505 May 2021
Request for Additional Information Regarding Proposed Alternative to Use ASME Code Case N-893
ML21119A2282021-04-29029 April 2021
NRR E-mail Capture - Request for Additional Information (RAI) - LaSalle, EPID-L-2020-LLA-0018, License Amendment Request (LAR) TSTF-505
ML21077A1902021-03-18018 March 2021
NRR E-mail Capture - Lasalle Units 1 and 2 - Request for Additional Information (RAI) Request for License Amendment Regarding Ultimate Heat Sink, (EPID-L-2020-LLA-0165)
ML21068A2762021-03-0909 March 2021
NRR E-mail Capture - La Salle Units 1 and 2 - Request for Additional Information (RAI) Relief Request I4R-12 Relief from Code Surface Examinations for 2B33-F060B Valve Repair (EPID-L-2020-LLA-0016)
ML21067A6752021-03-0808 March 2021
NRR E-mail Capture - La Salle Units 1 and 2 - Request for Additional Information (RAI) UHS Amendment Request (EPID-L-2020-LLA-0165)
ML21060B4352021-03-0101 March 2021
NRR E-mail Capture - Second Round - Request for Additional Information (Rais) EPID-L-2020-LLA-0018, LaSalle License Amendment Request to Adopt Risk Informed Completion Times TSTF-505, Revision 2
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
ML21053A0252021-02-20020 February 2021
NRR E-mail Capture - Request for Additional Information (Rais) - LaSalle Request for Exemption from Pre-Access Drug and Alcohol Testing
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)
ML21048A0432021-02-16016 February 2021
County Station - Notification of NRC Design Bases Assurance Inspection (Programs) and Initial Request for Information - Inspection Report 05000373/2021011 and 05000374/2021011
ML20364A2452020-12-29029 December 2020
Notification of an NRC Triennial Heat Sink Performance Inspection and Request for Information; Inspection Report 05000373/2021002; 05000374/2021002
ML20346A1042020-12-11011 December 2020
NRR E-mail Capture - LaSalle County Station, Units 1 and 2 - Request for Additional Information Regarding the License Amendment Request to Adopt 10 CFR 50.69
ML20330A1892020-11-25025 November 2020
Request for Information for an NRC Post-Approval Site Inspection for License Renewal; Inspection Report 05000374/2021010
ML20321A0852020-11-16016 November 2020
Notification of NRC Baseline Inspection and Request for Information (05000374/2021001)
ML20247J4082020-09-29029 September 2020
Apla Request for Additional Information LAR 50.69 and TSTF-505 (Epids L-2020-LLA-0017) and
ML20253A3422020-09-17017 September 2020
Correction to Request for Additional Information Request to Adopt 10 CFR 50.69, Risk-Informed Categorization and Treatment of Structures, Systems, and Components for Nuclear Power Reactors (EPID-2020-LLA-0017)
ML20253A2272020-09-16016 September 2020
Correction to Request for Additional Information Application to Adopt Risk-Informed Completion Times TSTF-505, Revision 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b
ML20240A2182020-09-0303 September 2020
Request for Additional Information Regarding Amendment Request for Amendments to Renewed Facility Operating Licenses to Adopt 10 CFR 50.69, Risk-Informed Categorization and Treatment of Structures, Systems, and Co
ML20239A7262020-08-27027 August 2020
Supplemental Information Needed for Acceptance of Requested Licensing Action Regarding Request for a License Amendment to Technical Specification 3.7.3, Ultimate Heat Sink
ML20239A7982020-08-25025 August 2020
NRR E-mail Capture - Exelon Generation Company, LLC - Fleet License Amendment Request to Adopt TSTF-568, Revision 2
ML19275H1362019-10-0202 October 2019
NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding Request to Use ASME Code Case N-879
ML19179A0612019-07-19019 July 2019
Three Mile Point 1 - Supplemental Information Needed to Proposed Alternative to Use ASME Code Case N-879
ML19120A2302019-04-29029 April 2019
Ltr. 04/29/19 LaSalle County Station, Units 1 and 2 - Request for Information for an NRC Triennial Baseline Design Bases Assurance Inspection (Team); Inspection Report 05000373/2019012; 05000374/2019012 (DRS-M.Jones)
ML19087A2682019-03-28028 March 2019
NRR E-mail Capture - Request for Additional Information (RAI) - LaSalle 1 and 2, EPID-L-2018-LLA-0162, LAR Removal of Operating Mode Restrictions for Performing Surveillance Testing of the Div 3 Battery and HPCS DG
ML19065A0902019-03-0505 March 2019
NRR E-mail Capture - LaSalle 1 and 2, EPID-L-2018-LLR-0162, LAR Removal of Operating Mode Restrictions for Performing Surveillance Testing of the Div 3 Battery and HPCS DG, Additional Draft Request for Additional Information (RAI)
ML19058A2392019-02-27027 February 2019
Information Request to Support Upcoming Problem Identification and Resolution Inspection at LaSalle County Station, Units 1 and 2
ML19036A6562019-02-0505 February 2019
NRR E-mail Capture - LaSalle 1 and 2, EPID-L-2018-LLR-0123, Relief Request I3R-15, Third Inservice Inspection Interval, Request for Additional Information (RAI)
ML19022A2552019-01-22022 January 2019
NRR E-mail Capture - LaSalle Units 1 and 2, EPID-L-2018-LLA-0035, Amendment Request to Adopt TSTF-334-A, Status of Revised Draft RAIs Sent to You on December 13, 2018
2024-07-12
[Table view] |
Text
June 15, 2006 Mr. Christopher M. Crane, President and Chief Nuclear Officer Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555
SUBJECT:
LASALLE COUNTY STATION, UNITS 1 AND 2 - REQUEST FOR ADDITIONAL INFORMATION RELATED TO ULTIMATE HEAT SINK LICENSE AMENDMENT REQUEST (TAC NOS. MD0336 AND MD0337)
Dear Mr. Crane:
By letter to the Nuclear Regulatory Commission (NRC) dated March 13, 2006 (Agencywide Documents Access and Management System Accession No. ML060720507), Exelon Generation Company, LLC submitted a request to change the technical specifications (TS) related to TS 3.7.3, Ultimate Heat Sink, for the LaSalle County Station, Units 1 and 2.
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 June 1, 2006, it was agreed that LaSalle County Station would provide a response within 30 days of 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) 415-3154.
Sincerely,
/RA/
Stephen P. Sands, Project Manager Plant Licensing Branch III-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-373 and 50-374
Enclosure:
Request for Additional Information cc w/encl: See next page
June 15, 2006 Mr. Christopher M. Crane, President and Chief Nuclear Officer Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555
SUBJECT:
LASALLE COUNTY STATION, UNITS 1 AND 2 - REQUEST FOR ADDITIONAL INFORMATION RELATED TO ULTIMATE HEAT SINK LICENSE AMENDMENT REQUEST (TAC NOS. MD0336 AND MD0337)
Dear Mr. Crane:
By letter to the Nuclear Regulatory Commission (NRC) dated March 13, 2006 (Agencywide Documents Access and Management System Accession No. ML060720507), Exelon Generation Company, LLC submitted a request to change the technical specifications (TS) related to TS 3.7.3, Ultimate Heat Sink, for the LaSalle County Station, Units 1 and 2.
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 June 1, 2006, it was agreed that LaSalle County Station would provide a response within 30 days of 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) 415-3154.
Sincerely,
/RA/
Stephen P. Sands, Project Manager Plant Licensing Branch III-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-373 and 50-374
Enclosure:
Request for Additional Information DISTRIBUTION:
PUBLIC LPL3-2 R/F RidsNrrDorlLpl3-2 RidsNrrPMSSands RidsNrrLADClarke RidsAcrsAcnwMailCenter RidsOgcRp RidsRgn3MailCenter RidsNrrDorlDpr RidsNrrDeEicb ADAMS Accession Number: ML061530295 OFFICE LPL3-2/PM LPL3-2/LA EICB/BC LPL3-2/BC NAME SSands:mw DClarke AHowe* DCollins DATE 06/15/2006 06/15/2006 06/2/2006 06/15/2006 OFFICIAL RECORD COPY
LaSalle County Station Units 1 and 2 cc:
Site Vice President - LaSalle County Station Robert Cushing, Chief, Public Utilities Division Exelon Generation Company, LLC Illinois Attorney General's Office 2601 North 21st Road 100 W. Randolph Street Marseilles, IL 61341-9757 Chicago, IL 60601 LaSalle County Station Plant Manager Regional Administrator Exelon Generation Company, LLC U.S. NRC, Region III 2601 North 21st Road 801 Warrenville Road Marseilles, IL 61341-9757 Lisle, IL 60532-4351 Regulatory Assurance Manager - LaSalle Illinois Emergency Management Exelon Generation Company, LLC Agency 2601 North 21st Road Division of Disaster Assistance &
Marseilles, IL 61341-9757 Preparedness 110 East Adams Street U.S. Nuclear Regulatory Commission Springfield, IL 62701-1109 LaSalle Resident Inspectors Office 2605 North 21st Road Document Control Desk - Licensing Marseilles, IL 61341-9756 Exelon Generation Company, LLC 4300 Winfield Road Phillip P. Steptoe, Esquire Warrenville, IL 60555 Sidley and Austin One First National Plaza Senior Vice President of Operations Chicago, IL 60603 Exelon Generation Company, LLC 4300 Winfield Road Assistant Attorney General Warrenville, IL 60555 100 W. Randolph St. Suite 12 Chicago, IL 60601 Vice President - Licensing and Regulatory Affairs Chairman Exelon Generation Company, LLC LaSalle County Board 4300 Winfield Road 707 Etna Road Warrenville, IL 60555 Ottawa, IL 61350 Attorney General 500 S. Second Street Springfield, IL 62701 Chairman Illinois Commerce Commission 527 E. Capitol Avenue, Leland Building Springfield, IL 62706
LaSalle County Station Units 1 and 2 Director - Licensing and Regulatory Affairs Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555 Assistant General Counsel Exelon Generation Company, LLC 200 Exelon Way Kennett Square, PA 19348 Manager Licensing - Dresden, Quad Cities and Clinton Exelon Generation Company, LLC 4300 Winfield Road Warrenville, IL 60555
REQUEST FOR ADDITIONAL INFORMATION LASALLE COUNTY STATION, UNITS 1 AND 2 DOCKET NOS. 50-373 AND 50-374 In reviewing the Exelon Generation Companys (Exelons) license amendment request submittal dated March 13, 2006, related to ultimate heat sink (UHS) for the LaSalle County Station, Units 1 and 2 (LaSalle), the NRC staff has determined that the following information is needed in order to complete its review:
- 1. Show that the temperatures in the two circulating water intake canals are sufficiently representative of each other and of the UHS temperature as assumed in the safety analysis to support the use of the averaged temperature at both units. Show how these relationships remain valid when one unit is out of service, or explain how this will be accommodated in the technical specification (TS) for the other unit. (Category 2.a)
- 2. Describe any thermowell modifications or adaptors required for the installation of the resistance temperature detectors (RTDs). Confirm that the RTD insertion length is compatible with the thermowells. Identify any seismic requirements applicable to this installation; for example, if safety-related cooling water is extracted from these canals, there may be seismic II/I considerations. (Category 2.a)
- 3. The request indicates that the existing thermocouple wires will be used for the RTDs, and that temperature compensator modules will be used to correct any signal effects.
Where will these temperature compensator modules be located? What is the specific compensation provided, and how does this account for: (Category 2.a)
(a) thermocouple wire resistence, especially considering that the RTDs are using a 2-wire, rather than 3- or 4-wire configuration, and (b) dissimilar metallic junction at both ends of the thermocouple cables. Please explain how these effects are addressed in the uncertainty evaluation.
- 4. Provide the detailed uncertainty evaluation, showing the source of all input information and the full derivation of all results and conclusions. (Category 2.a)
- 5. Describe the configuration (in regard to the acquisition and exchange of these temperature measurement data) of the Data Acquisition System, Plant Process Computer for each unit, and the data communications in each unit and between units as they presently exist and as they would exist following the implementation of the requested change. (Category 2.a)
- 6. What method or procedures for determining the UHS temperature reading, used to satisfy the TS requirement, will be used after all four new RTDs are installed? Include details on handling failed inputs (if one RTD fails in one unit, if one RTD fails in each unit, if two fail in one unit, if two fail in one unit and one fails in the other unit).
(Category 2.a)
ENCLOSURE
- 7. How are the temperature values presented to the operators and system engineer including any alarms, warnings, or other identification of status or failures?
(Category 2.a)
- 8. Describe the type of RTD to be used, and the calibrated range of the temperature measurement. (Category 2.a)
- 9. How frequently will the new RTD readings be sampled and how frequently are the associated calculations performed? (Category 2.a)
- 10. The statistical theory upon which the assumed accuracy improvement is partly based requires statistical independence among the measurements. How are the common-mode uncertainty elements, such as environmental effects and common maintenance and test equipment, accounted for in the analysis? (Category 2.a)
- 11. How were any aging effects on RTD and component accuracy accounted for in the uncertainty calculations? (Category 2.a)
- 12. Describe the calibration and surveillance procedures to be implemented to maintain the accuracy of the individual temperature measurements. (Category 2.a)
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)
