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Category:Letter type:RNP
MONTHYEARRNP-RA/21-0035, Duke Energy Progress, Inc - Independent Spent Fuel Storage Installation Annual Radioactive Effluent Release Report2021-02-18018 February 2021 Duke Energy Progress, Inc - Independent Spent Fuel Storage Installation Annual Radioactive Effluent Release Report RNP-RA/20-0234, Independent Spent Fuel Storage Installation, Registration of Use of Spent Fuel Casks2020-07-23023 July 2020 Independent Spent Fuel Storage Installation, Registration of Use of Spent Fuel Casks RNP-RA/20-0199, Registration of Use of Spent Fuel Casks2020-06-25025 June 2020 Registration of Use of Spent Fuel Casks RNP-RA/18-0063, Request for Extension of Due Date for Seismic Probabilistic Risk Assessment Submittal2018-11-29029 November 2018 Request for Extension of Due Date for Seismic Probabilistic Risk Assessment Submittal RNP-RA/18-0060, Transmittal of Core Operating Limits Report2018-10-17017 October 2018 Transmittal of Core Operating Limits Report RNP-RA/18-0050, Response to Supplemental Request for Additional Information Regarding License Amendment Request Proposing to Add a Qualified Offsite Circuit to Technical Specification 3.8.1, AC Sources - Operating and the Use of Load Tap Change2018-08-0101 August 2018 Response to Supplemental Request for Additional Information Regarding License Amendment Request Proposing to Add a Qualified Offsite Circuit to Technical Specification 3.8.1, AC Sources - Operating and the Use of Load Tap Change RNP-RA/18-0044, Supplement to License Amendment Request Proposing to Add a Qualified Offsite Circuit to Technical Specification 3.8.1, AC Sources - Operating and the Use of Load Tap Changers in the Automatic Mode of Operation on the Startup Transform2018-07-11011 July 2018 Supplement to License Amendment Request Proposing to Add a Qualified Offsite Circuit to Technical Specification 3.8.1, AC Sources - Operating and the Use of Load Tap Changers in the Automatic Mode of Operation on the Startup Transformers RNP-RA/18-0039, Transmittal of Emergency Procedure Revisions and 10 CFR 50.54(q) Summary of Analysis2018-06-27027 June 2018 Transmittal of Emergency Procedure Revisions and 10 CFR 50.54(q) Summary of Analysis RNP-RA/18-0041, Independent Spent Fuel Storage Installation - Register as User for Cask2018-06-13013 June 2018 Independent Spent Fuel Storage Installation - Register as User for Cask RNP-RA/18-0036, Response to Request for Additional Information (RAI) Regarding Amendment Request Proposing to Add a Qualified Offsite Circuit to Technical Specification 3.8.1, AC Sources - Operating and the Use ...2018-05-16016 May 2018 Response to Request for Additional Information (RAI) Regarding Amendment Request Proposing to Add a Qualified Offsite Circuit to Technical Specification 3.8.1, AC Sources - Operating and the Use ... RNP-RA/18-0029, Submittal of 2017 Annual Radiological Environmental Operating Report2018-05-0808 May 2018 Submittal of 2017 Annual Radiological Environmental Operating Report RNP-RA/18-0031, (Hbrsep), Unit 2 - 2017 Annual Radioactive Effluent Release Report and Offsite Dose Calculation Manual, Revision 352018-04-23023 April 2018 (Hbrsep), Unit 2 - 2017 Annual Radioactive Effluent Release Report and Offsite Dose Calculation Manual, Revision 35 RNP-RA/18-0015, Application for Technical Specifications Change Regarding Risk-Informed Justification for the Relocation of Specific Surveillance Frequently Requirements to a Licensee Controlled Program2018-04-16016 April 2018 Application for Technical Specifications Change Regarding Risk-Informed Justification for the Relocation of Specific Surveillance Frequently Requirements to a Licensee Controlled Program RNP-RA/18-0024, Report of Changes Pursuant to 10 CFR 50.59(d)(2)2018-04-0202 April 2018 Report of Changes Pursuant to 10 CFR 50.59(d)(2) RNP-RA/18-0020, Notification of Change in Licensed Operator Status2018-02-20020 February 2018 Notification of Change in Licensed Operator Status RNP-RA/18-0003, Independent Spent Fuel Storage Installation Annual Radioactive Effluent Release Report2018-01-23023 January 2018 Independent Spent Fuel Storage Installation Annual Radioactive Effluent Release Report RNP-RA/17-0085, Request for Additional Information Regarding Application to Revise Technical Specification Surveillance Requirement Frequencies to Support 24-Month Fuel Cycles2018-01-0808 January 2018 Request for Additional Information Regarding Application to Revise Technical Specification Surveillance Requirement Frequencies to Support 24-Month Fuel Cycles RNP-RA/17-0086, Transmittal of Emergency Procedure Revision and 10 CFR 50.54(q) Summary of Analyses2017-12-14014 December 2017 Transmittal of Emergency Procedure Revision and 10 CFR 50.54(q) Summary of Analyses RNP-RA/17-0081, Submittal of Change in Licensed Operators Medical Status2017-12-11011 December 2017 Submittal of Change in Licensed Operators Medical Status RNP-RA/17-0079, Operator License Renewal Application2017-12-0707 December 2017 Operator License Renewal Application RNP-RA/17-0071, Independent Spent Fuel Storage Installation (ISFSI) Registration for Use of General License Spent Fuel Casks2017-10-19019 October 2017 Independent Spent Fuel Storage Installation (ISFSI) Registration for Use of General License Spent Fuel Casks RNP-RA/17-0068, Response to NRC Request for Additional Information Related to License Amendment Request Regarding Technical Specification Surveillance Requirement Frequencies to Support 24-Month Fuel Cycles2017-09-28028 September 2017 Response to NRC Request for Additional Information Related to License Amendment Request Regarding Technical Specification Surveillance Requirement Frequencies to Support 24-Month Fuel Cycles RNP-RA/17-0037, License Amendment Request Proposing to Add a Qualified Offsite Circuit to Technical Specifications 3.8.1, AC Sources-Operating and the Use of Load Tap Changers in the Automatic Mode of Operation on the Startup Transformers2017-09-27027 September 2017 License Amendment Request Proposing to Add a Qualified Offsite Circuit to Technical Specifications 3.8.1, AC Sources-Operating and the Use of Load Tap Changers in the Automatic Mode of Operation on the Startup Transformers RNP-RA/17-0043, Relief Request (RR)-12 for Relief from Volumetric/Surface Examination Frequency Requirements of ASME Code Case N-729-42017-09-22022 September 2017 Relief Request (RR)-12 for Relief from Volumetric/Surface Examination Frequency Requirements of ASME Code Case N-729-4 RNP-RA/17-0065, Refueling Outage 30 Steam Generator Tube Inspection Report2017-09-18018 September 2017 Refueling Outage 30 Steam Generator Tube Inspection Report RNP-RA/17-0060, Notification of Change in Licensed Operator Status2017-08-10010 August 2017 Notification of Change in Licensed Operator Status RNP-RA/17-0058, Notification of Change in Licensed Operator Status2017-08-0303 August 2017 Notification of Change in Licensed Operator Status RNP-RA/17-0055, Transmittal of Core Operating Limits Report for Cycle 312017-07-26026 July 2017 Transmittal of Core Operating Limits Report for Cycle 31 RNP-RA/17-0042, Submittal of the PWROG-14048-P, Revision 1, to Satisfy the Regulatory Commitment Related to the Pressurized Water Reactor Internals Program Plan for Aging Management of Reactor Internals2017-06-29029 June 2017 Submittal of the PWROG-14048-P, Revision 1, to Satisfy the Regulatory Commitment Related to the Pressurized Water Reactor Internals Program Plan for Aging Management of Reactor Internals RNP-RA/17-0051, Submittal of Nine Day Inservice Inspection Summary Report2017-06-29029 June 2017 Submittal of Nine Day Inservice Inspection Summary Report RNP-RA/17-0041, Transmittal of Technical Specifications Bases Revisions2017-05-23023 May 2017 Transmittal of Technical Specifications Bases Revisions RNP-RA/17-0038, (Hbrsep), Unit No. 2 - 2016 Annual Radiological Environmental Operating Report2017-05-0909 May 2017 (Hbrsep), Unit No. 2 - 2016 Annual Radiological Environmental Operating Report RNP-RA/17-0034, Modification of Request for Technical Specification Change to Change Technical Specification Surveillance Requirement Frequencies to Support 24-Month Fuel Cycles (MF9544)2017-05-0202 May 2017 Modification of Request for Technical Specification Change to Change Technical Specification Surveillance Requirement Frequencies to Support 24-Month Fuel Cycles (MF9544) RNP-RA/17-0036, (Hbrsep), Unit No. 2 - 2016 Annual Radioactive Effluent Release Report and Offsite Dose Calculation Manual, Current Revision 342017-04-25025 April 2017 (Hbrsep), Unit No. 2 - 2016 Annual Radioactive Effluent Release Report and Offsite Dose Calculation Manual, Current Revision 34 RNP-RA/17-0031, Provides Additional Information Regarding License Amendment Request to Adopt Technical Specifications Task Force (TSTF) Traveler 522, Revision 02017-04-20020 April 2017 Provides Additional Information Regarding License Amendment Request to Adopt Technical Specifications Task Force (TSTF) Traveler 522, Revision 0 RNP-RA/17-0033, Flood Hazard Mitigating Strategies Assessment (MSA) Report Submittal2017-04-12012 April 2017 Flood Hazard Mitigating Strategies Assessment (MSA) Report Submittal RNP-RA/17-0014, Resubmittal of Request for Technical Specification Change to Change Technical Specification Surveillance Requirement Frequencies to Support 24-Month Fuel Cycles2017-04-0303 April 2017 Resubmittal of Request for Technical Specification Change to Change Technical Specification Surveillance Requirement Frequencies to Support 24-Month Fuel Cycles RNP-RA/17-0028, Submittal of Engineering Calculation in Support of a Request for Technical Specification Change to Change Technical Specification Surveillance Requirement Frequencies to Support 24-Month Fuel Cycles2017-04-0303 April 2017 Submittal of Engineering Calculation in Support of a Request for Technical Specification Change to Change Technical Specification Surveillance Requirement Frequencies to Support 24-Month Fuel Cycles RNP-RA/17-0021, Transmittal of Core Operating Limits Report2017-03-13013 March 2017 Transmittal of Core Operating Limits Report RNP-RA/17-0019, Supplemental Submittal to Correct Marked Up Technical Specifications (TS) Pages Transmitted with Application for Technical Specification Task Force (TSTF)-339, Relocate TS Parameters to the COLR Consistent with WCAP-14483, Revision 22017-03-0808 March 2017 Supplemental Submittal to Correct Marked Up Technical Specifications (TS) Pages Transmitted with Application for Technical Specification Task Force (TSTF)-339, Relocate TS Parameters to the COLR Consistent with WCAP-14483, Revision 2 RNP-RA/17-0015, Independent Spent Fuel Storage Installations - Letter Regarding Report of Changes Pursuant to 10 CFR 72.482017-02-22022 February 2017 Independent Spent Fuel Storage Installations - Letter Regarding Report of Changes Pursuant to 10 CFR 72.48 RNP-RA/17-0016, Independent Spent Fuel Storage Installation - Annual Radioactive Effluent Release Report2017-02-22022 February 2017 Independent Spent Fuel Storage Installation - Annual Radioactive Effluent Release Report RNP-RA/17-0015, H.B. Robinson Steam Electric Plant & ISFSIs - Report of Changes Pursuant to 10 CFR 72.482017-02-22022 February 2017 H.B. Robinson Steam Electric Plant & ISFSIs - Report of Changes Pursuant to 10 CFR 72.48 RNP-RA/16-0100, Response to Apparent Violation in NRC Inspection Report 05000261/2016404, EA-16-2272017-01-24024 January 2017 Response to Apparent Violation in NRC Inspection Report 05000261/2016404, EA-16-227 RNP-RA/16-0097, Transmittal Letter for Response to Inspection Report Temporary Instruction 2201/004, Inspection of Implementation of Interim Cyber Security Milestones 1-7, Inspection Report 05000261/20154052016-12-15015 December 2016 Transmittal Letter for Response to Inspection Report Temporary Instruction 2201/004, Inspection of Implementation of Interim Cyber Security Milestones 1-7, Inspection Report 05000261/2015405 RNP-RA/16-0089, Request for Withdrawal of License Amendment Request for Change Technical Specification Surveillance Requirement Frequencies to Support 24-Month Fuel Cycles2016-11-10010 November 2016 Request for Withdrawal of License Amendment Request for Change Technical Specification Surveillance Requirement Frequencies to Support 24-Month Fuel Cycles RNP-RA/16-0090, Notification of Rescheduled Date for 2017 Emergency Preparedness Graded Exercise2016-11-10010 November 2016 Notification of Rescheduled Date for 2017 Emergency Preparedness Graded Exercise RNP-RA/16-0087, Technical Specifications Section 5.6.6 Post Accident Monitoring Instrumentation Report for Inoperable High Range Containment Area Radiation Monitors2016-10-31031 October 2016 Technical Specifications Section 5.6.6 Post Accident Monitoring Instrumentation Report for Inoperable High Range Containment Area Radiation Monitors RNP-RA/16-0078, Technical Specifications Section 5.6.6, Post Accident Monitoring Instrumentation Report for Inoperable High Range Containment Area Radiation Monitors2016-10-0505 October 2016 Technical Specifications Section 5.6.6, Post Accident Monitoring Instrumentation Report for Inoperable High Range Containment Area Radiation Monitors RNP-RA/16-0079, Response to Request for Additional Information Regarding License Amendment Request to Adopt National Fire Protection Association Standard 805, Performance-Based Standard for Light Water Reactor Electric Generating Plants.2016-10-0505 October 2016 Response to Request for Additional Information Regarding License Amendment Request to Adopt National Fire Protection Association Standard 805, Performance-Based Standard for Light Water Reactor Electric Generating Plants. 2021-02-18
[Table view] Category:Status Report
MONTHYEARRA-23-0036, Biennial Decommissioning Financial Assurance Reports2023-03-30030 March 2023 Biennial Decommissioning Financial Assurance Reports RA-19-0159, Stations - Biennial Decommissioning Financial Assurance Reports2019-03-28028 March 2019 Stations - Biennial Decommissioning Financial Assurance Reports RA-17-0018, Duke Energy Carolinas, LLC - Biennial Decommissioning Financial Assurance Reports2017-03-29029 March 2017 Duke Energy Carolinas, LLC - Biennial Decommissioning Financial Assurance Reports RA-15-0010, Submits Required Biennial Decommissioning Financial Assurance Reports2015-03-30030 March 2015 Submits Required Biennial Decommissioning Financial Assurance Reports RNP-RA/15-0015, Fourth Six-Month Status Reports in Response to March 12, 2012, Commission Order Modifying Licenses with Regard to Reliable Spent Fuel Pool Instrumentation (Order Number EA-12-051)2015-02-23023 February 2015 Fourth Six-Month Status Reports in Response to March 12, 2012, Commission Order Modifying Licenses with Regard to Reliable Spent Fuel Pool Instrumentation (Order Number EA-12-051) RNP-RA/15-0009, Fourth Six-Month Status Report in Response to March 12, 2012, Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049)2015-02-23023 February 2015 Fourth Six-Month Status Report in Response to March 12, 2012, Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049) RNP-RA/14-0083, Third Six-Month Status Report in Response to March 12, 2012, Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049)2014-08-26026 August 2014 Third Six-Month Status Report in Response to March 12, 2012, Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for Beyond-Design-Basis External Events (Order Number EA-12-049) RNP-RA/14-0009, Second Six-Month Status Report in Response to March 12, 2012, Commission Order Modifying Licenses with Regard to Reliable Spent Fuel Pool Instrumentation (Order No. EA-12-051)2014-02-24024 February 2014 Second Six-Month Status Report in Response to March 12, 2012, Commission Order Modifying Licenses with Regard to Reliable Spent Fuel Pool Instrumentation (Order No. EA-12-051) ML13252A2432013-08-28028 August 2013 First Six-month Status Report in Response to March 12, 2012, Commission Order Modifying Licenses with Regard to Requirements for Mitigation Strategies for beyond-Design-Basis External Events (Order Number EA-12-049) RA-13-016, Duke Energy Progress, Inc., First Six-Month Status Reports in Response to March 12, 2012, Commission Order Modifying Licenses with Regard to Reliable Spent Fuel Pool Instrumentation (Order Number EA-12-051)2013-08-26026 August 2013 Duke Energy Progress, Inc., First Six-Month Status Reports in Response to March 12, 2012, Commission Order Modifying Licenses with Regard to Reliable Spent Fuel Pool Instrumentation (Order Number EA-12-051) RA-13-006, Biennial Decommissioning Financial Assurance Report2013-03-28028 March 2013 Biennial Decommissioning Financial Assurance Report RA-13-006, H. B. Robinson, Unit 2, Brunswick, Units 1 and 2, Shearon Harris, Unit 1, and Crystal River, Unit 3, Submittal of Biennial Decommissioning Financial Assurance Reports2013-03-28028 March 2013 H. B. Robinson, Unit 2, Brunswick, Units 1 and 2, Shearon Harris, Unit 1, and Crystal River, Unit 3, Submittal of Biennial Decommissioning Financial Assurance Reports ML13091A0252013-03-28028 March 2013 H. B. Robinson, Unit 2, Brunswick, Units 1 and 2, Shearon Harris, Unit 1, and Crystal River, Unit 3, Submittal of Biennial Decommissioning Financial Assurance Reports RA-11-018, Response to Request for Additional Information - 2011 Biennial Decommissioning Funding Status Report2011-07-20020 July 2011 Response to Request for Additional Information - 2011 Biennial Decommissioning Funding Status Report ML1109503662011-03-31031 March 2011 Crystal River Unit 3, Shearon Unit 1, and H.B. Robinson Unit 2, Biennial Decommissioning Funding Status Report RA-11-004, Brunswick Unit 1 & 2, Crystal River Unit 3, Shearon Unit 1, and H.B. Robinson Unit 2, Biennial Decommissioning Funding Status Report2011-03-31031 March 2011 Brunswick Unit 1 & 2, Crystal River Unit 3, Shearon Unit 1, and H.B. Robinson Unit 2, Biennial Decommissioning Funding Status Report ML0708602102007-03-22022 March 2007 Progress Energy - Biennial Decommissioning Funding Status Report ML0509700422005-03-31031 March 2005 Units, 1 and 2, Crystal River, Unit 3, Shearon Harris, Unit 1 and H. B. Robinson, Unit 2, Biennial Decommissioning Funding Status Report RNP-RA/03-0071, Status Update for NRC Bulletin 88-09, Thimble Tube Thinning in Westinghouse Reactors.2003-05-0202 May 2003 Status Update for NRC Bulletin 88-09, Thimble Tube Thinning in Westinghouse Reactors. ML0224601532002-08-29029 August 2002 Undated Document, Current Status of High Susceptibility Plants That May Receive Orders ML0224007812002-01-18018 January 2002 E-mail from Jacob Zimmerman, Bulletin 2001-01 Status Report 2023-03-30
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-4 Progress Energy Lb NRCB 88-09 Serial: RNP-RA/03-0071 MAY 27 2003 United States Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555 H. B. ROBINSON STEAM ELECTRIC PLANT, UNIT NO. 2 DOCKET NO. 50-261/LICENSE NO. DPR-23 STATUS UPDATE FOR NRC BULLETIN 88-09, THIMBLE TUBE THINNING IN WESTINGHOUSE REACTORS Ladies and Gentlemen:
By letter dated July 26, 1988, the NRC issued Elulletin (NRCB) No. 88-09, Thimble Tube Thinning in Westinghouse Reactors. NRCB 8 8-09 required establishment and implementation of a thimble tube inspection program. The response for H. B. Robinson Steam Electric Plant (HBRSEP), Unit No. 2, was provided to the NF:C by letter dated February 8, 1991, which confirmed that an inspection program had been established.
The nominal inspection frequency for eddy current inspection of the thimble tubes at HBRSEP, Unit No. 2, has been every other refueling outage, which is approximately every 3 years. By letter dated January 20, 1999, the NRC was informed that as a result of inspections performed during the preceding six (6) operating cycles, the planned inspections for Refueling Outage (RO) 19 would be deferred to RO-20. That letter also stated that the future inspection intervals would be adjusted (shortened or lengthened) based on the results of the inspection program.
The NRC responded by letter dated January 27,2000, that the deferral of the planned inspections was reasonable and to please keep the NRC updated on the results of the thimble tube inspection program and the results for the ensuing RO-20.
In response to this request, the following status update is hereby provided:
The most recent eddy current inspection of the HBRSEP, Unit No. 2, thimble tubes was performed on April 16,200l. The inspection was performed in accordance with HBRSEP, Unit No. 2, procedure EST-108, Flux Thimble Eddy Current Inspection (Specified Refueling Outages). The thimble for core location G-07 had a 40% outer wall wear indication in the vicinity of the fuel assembly bottom nozzle. Inner wall indication was 0% wear through. HBRSEP, Unit No. 2, has double walled thimbles, with the inner wall being the Reactor Coolant System pressure boundary.
Progress Energy Carolinas, Inc.
Robinson Nuclear Plant 3581 West Entrance Road HartwIle, SC 29550
United States Nuclear Regulatory Commission Serial: RNP-RA/03-0071 Page 2 of 2 Eddy current inspection of the thimbles has been performed during RO-13 (January 1991), RO-15 (October 1993), RO-17 (September 1996), and RO-20 (April 2001). The inspection of the thimbles has indicated no detectable degradation of the inner wall. No significant changes have been made to alter the flow characteristics in the vessel that would impact the fretting mechanism that could cause degradation of the inner wall of the thimbles. Therefore, based on the existing configuration of the thimbles and the previous inspection results, the frequency of eddy current inspection of the thimble tubes is being changed from every other refueling outage to every third refueling outage.
This information is being provided in response to the NRC request to provide the results of the thimble tube inspection program and the results for RO-20. There is no response or review requested for this submittal. The results of thimble eddy current inspections will continue to be reviewed after each inspection and the inspection frequency will be further adjusted as deemed appropriate based on the results of these inspections.
If you have any questions concerning this matter, please contact me.
Sincerely, C. T. Baucom Supervisor - Licensing/Regulatory Programs CAC/cac c: L. A. Reyes, NRC, Region II NRC Resident Inspector, HBRSEP C. P. Patel, NRC, NRR
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-4 Progress Energy Lb NRCB 88-09 Serial: RNP-RA/03-0071 MAY 27 2003 United States Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555 H. B. ROBINSON STEAM ELECTRIC PLANT, UNIT NO. 2 DOCKET NO. 50-261/LICENSE NO. DPR-23 STATUS UPDATE FOR NRC BULLETIN 88-09, THIMBLE TUBE THINNING IN WESTINGHOUSE REACTORS Ladies and Gentlemen:
By letter dated July 26, 1988, the NRC issued Elulletin (NRCB) No. 88-09, Thimble Tube Thinning in Westinghouse Reactors. NRCB 8 8-09 required establishment and implementation of a thimble tube inspection program. The response for H. B. Robinson Steam Electric Plant (HBRSEP), Unit No. 2, was provided to the NF:C by letter dated February 8, 1991, which confirmed that an inspection program had been established.
The nominal inspection frequency for eddy current inspection of the thimble tubes at HBRSEP, Unit No. 2, has been every other refueling outage, which is approximately every 3 years. By letter dated January 20, 1999, the NRC was informed that as a result of inspections performed during the preceding six (6) operating cycles, the planned inspections for Refueling Outage (RO) 19 would be deferred to RO-20. That letter also stated that the future inspection intervals would be adjusted (shortened or lengthened) based on the results of the inspection program.
The NRC responded by letter dated January 27,2000, that the deferral of the planned inspections was reasonable and to please keep the NRC updated on the results of the thimble tube inspection program and the results for the ensuing RO-20.
In response to this request, the following status update is hereby provided:
The most recent eddy current inspection of the HBRSEP, Unit No. 2, thimble tubes was performed on April 16,200l. The inspection was performed in accordance with HBRSEP, Unit No. 2, procedure EST-108, Flux Thimble Eddy Current Inspection (Specified Refueling Outages). The thimble for core location G-07 had a 40% outer wall wear indication in the vicinity of the fuel assembly bottom nozzle. Inner wall indication was 0% wear through. HBRSEP, Unit No. 2, has double walled thimbles, with the inner wall being the Reactor Coolant System pressure boundary.
Progress Energy Carolinas, Inc.
Robinson Nuclear Plant 3581 West Entrance Road HartwIle, SC 29550
United States Nuclear Regulatory Commission Serial: RNP-RA/03-0071 Page 2 of 2 Eddy current inspection of the thimbles has been performed during RO-13 (January 1991), RO-15 (October 1993), RO-17 (September 1996), and RO-20 (April 2001). The inspection of the thimbles has indicated no detectable degradation of the inner wall. No significant changes have been made to alter the flow characteristics in the vessel that would impact the fretting mechanism that could cause degradation of the inner wall of the thimbles. Therefore, based on the existing configuration of the thimbles and the previous inspection results, the frequency of eddy current inspection of the thimble tubes is being changed from every other refueling outage to every third refueling outage.
This information is being provided in response to the NRC request to provide the results of the thimble tube inspection program and the results for RO-20. There is no response or review requested for this submittal. The results of thimble eddy current inspections will continue to be reviewed after each inspection and the inspection frequency will be further adjusted as deemed appropriate based on the results of these inspections.
If you have any questions concerning this matter, please contact me.
Sincerely, C. T. Baucom Supervisor - Licensing/Regulatory Programs CAC/cac c: L. A. Reyes, NRC, Region II NRC Resident Inspector, HBRSEP C. P. Patel, NRC, NRR