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| 2 Issue 1) Although considerations for debris collection may be incorporated into the system design or operation, the industry guidance endorsed in Regulatory Guide 1.188 states that the IPA should include an identification of the specific program or activities that are used to manage aging effects. For components with an intended function of filtration, it is not clear to the staff that in all cases the proposed operational controls (e.g., for abnormal operation), or maintenance tasks (e.g., periodic inspections or cleaning of strainers) are linked to a specific program. | | 2 Issue 1) Although considerations for debris collection may be incorporated into the system design or operation, the industry guidance endorsed in Regulatory Guide 1.188 states that the IPA should include an identification of the specific program or activities that are used to manage aging effects. For components with an intended function of filtration, it is not clear to the staff that in all cases the proposed operational controls (e.g., for abnormal operation), or maintenance tasks (e.g., periodic inspections or cleaning of strainers) are linked to a specific program. |
| For the suppression pool suction strainers, it is also not clear how fouling is trended to ensure that accumulation of debris will not prevent an intended function from being met prior to the next inspection. | | For the suppression pool suction strainers, it is also not clear how fouling is trended to ensure that accumulation of debris will not prevent an intended function from being met prior to the next inspection. |
| In addition, given the normal movement of control rods, it is not clear to the staff that normal operation will be adequate to detect potential flow blockage in the hydraulic control unit (HCU) filters. | | In addition, given the normal movement of control rods, it is not clear to the staff that normal operation will be adequate to detect potential flow blockage in the hydraulic control unit (HCU) filters. |
| : 2) For the strainer STR10BA in the main steam positive leakage control, it is not clear to the staff whether this component is within the scope of license renewal and whether LRA Table 3.3.2-6 includes a corresponding AMR item. | | : 2) For the strainer STR10BA in the main steam positive leakage control, it is not clear to the staff whether this component is within the scope of license renewal and whether LRA Table 3.3.2-6 includes a corresponding AMR item. |
| Request | | Request |
| : 1) For each component in the table below provide additional information as follows: | | : 1) For each component in the table below provide additional information as follows: |
| Table No. System Component Type Discussion from RAI Response 3.2.2-2 High Pressure Core Spray Suction Strainer Inspect and Clean 3.2.2-3 Residual Heat Removal Suction Strainer Inspect and Clean 3.2.2-4 Low Pressure Core Spray Suction Strainer Inspect and Clean 3.2.2-5 Reactor Core Isolation Cooling Suction Strainer Inspect and Clean 3.3.2-1 Control Rod Drive Filter Normal Operation will detect flow blockage. Inspect and replace during rebuilds | | Table No. System Component Type Discussion from RAI Response 3.2.2-2 High Pressure Core Spray Suction Strainer Inspect and Clean 3.2.2-3 Residual Heat Removal Suction Strainer Inspect and Clean 3.2.2-4 Low Pressure Core Spray Suction Strainer Inspect and Clean 3.2.2-5 Reactor Core Isolation Cooling Suction Strainer Inspect and Clean 3.3.2-1 Control Rod Drive Filter Normal Operation will detect flow blockage. Inspect and replace during rebuilds |
| : a. For strainers where periodic inspections are performed, state: (a) the specific AMP to be used; (b) whether the maintenance tasks will be linked to the AMP; (c) how monitoring and trending will be conducted; and (d) the frequency of the inspections being credited. b. For the HCUs, state the basis for why monitoring during normal operation will be adequate to detect potential flow blockage of the filters. If monitoring might not be adequate, state the basis for why the periodicity of rebuilds provides reasonable assurance that the intended function of the control rods will be met. | | : a. For strainers where periodic inspections are performed, state: (a) the specific AMP to be used; (b) whether the maintenance tasks will be linked to the AMP; (c) how monitoring and trending will be conducted; and (d) the frequency of the inspections being credited. b. For the HCUs, state the basis for why monitoring during normal operation will be adequate to detect potential flow blockage of the filters. If monitoring might not be adequate, state the basis for why the periodicity of rebuilds provides reasonable assurance that the intended function of the control rods will be met. |
| : 2) For strainer STR10BA in the main steam positive leakage control system (PID-27-20C), provide additional information to clarify whether this component is within the scope of license renewal and, if so, state which aging management review item in LRA Table 3.3.2-6 is applicable. | | : 2) For strainer STR10BA in the main steam positive leakage control system (PID-27-20C), provide additional information to clarify whether this component is within the scope of license renewal and, if so, state which aging management review item in LRA Table 3.3.2-6 is applicable. |
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Letter Sequence RAI |
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Results
Other: ML17156A098, ML17347A383, ML17348B142, ML18078A747, ML18107A504, ML18120A135, ML18124A190, ML18127A034, ML18129A356, ML18143B396, ML18151A082, ML18155A550, ML18241A321
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MONTHYEARML17156A0982017-06-19019 June 2017 Receipt and Availability FRN - License Renewal Application for River Bend, Unit 1 Project stage: Other RBG-47773, Supplement to License Renewal Application2017-08-0101 August 2017 Supplement to License Renewal Application Project stage: Supplement ML17320B0992017-11-16016 November 2017 Final Requests for Additional Information for the Safety Review of the River Bend Station License Renewal Application Project stage: RAI ML17335A0982017-11-29029 November 2017 Final Requests for Additional Information for the Safety Review of the River Bend Station License Renewal Application Project stage: RAI ML17347B4242017-12-13013 December 2017 Final Requests for Additional Information for the Safety Review of the River Bend Station License Renewal Application (CAC No. MF9757) - Set 4 Project stage: RAI ML17347B4322017-12-13013 December 2017 Final Requests for Additional Information for the Safety Review of the River Bend Station License Renewal Application (CAC No. MF9757) - Set 5 Project stage: RAI ML17361A3962017-12-27027 December 2017 Final Requests for Additional Information for the Safety Review of the River Bend Station License Renewal Application (CAC No. MF9757) - Set 6 Project stage: RAI ML17348B1422018-01-0808 January 2018 RBS Scoping and Screening Audit Report Project stage: Other ML17347A3832018-01-0808 January 2018 RBS Ope Audit Report Project stage: Other ML18009A9092018-01-0909 January 2018 Final Requests for Additional Information for the Safety Review of the River Bend Station License Renewal Application (CAC No. MF9757) - Set 7 Project stage: RAI ML18022A9412018-01-22022 January 2018 Final Requests for Additional Information for the Safety Review of the River Bend Station License Renewal Application (CAC No. MF9757) - Set 8 Project stage: RAI ML17346A7322018-01-29029 January 2018 Aging Management Programs Audit Report Regarding River Bend Station, Unit 1 License Renewal Application Review Project stage: Acceptance Review RBG-47818, Response to License Renewal Application NRC Request for Additional Information - Set 72018-02-0707 February 2018 Response to License Renewal Application NRC Request for Additional Information - Set 7 Project stage: Request ML18043A0082018-02-0808 February 2018 Final Requests for Additional Information for the Safety Review of the River Bend Station License Renewal Application (CAC No. MF9757) - Set 10 Project stage: RAI ML18043A3512018-02-12012 February 2018 Final Requests for Additional Information for the Safety Review of the River Bend Station License Renewal Application (CAC No. MF9757) - Set 11 Project stage: RAI ML18078A7472018-03-0606 March 2018 Highland Mining Company, NRC Form 591 Part 1, Inspection Report 03036608/2018001 Project stage: Other ML18065A2132018-03-0606 March 2018 Final Requests for Additional Information for the Safety Review of the River Bend Station License Renewal Application (CAC No. MF9757) - Set 12 Project stage: RAI ML18057A4532018-03-0707 March 2018 Summary of Telephone Conference Call Held on February 20, 2018 Between the U.S. Nuclear Regulatory Commission and Energy Regarding RAI Pertaining to the River Bend Station, Unit 1 License Renewal Application Review Project stage: RAI ML18059A8222018-03-0808 March 2018 Summary of Public Telephone Conference Call Held on February 27, 2018 Between the U.S. Nuclear Regulatory Commission and Entergy Regarding Requests for Additional Information Pertaining to the River Bend Station Unit 1 Project stage: RAI ML18068A1872018-03-0909 March 2018 Revision of Final Request for Additional Information (RAI 2.3.3.17-2) for the Safety Review of the River Bend Station License Renewal Application (CAC No. MF9757) - Set 11 Project stage: RAI ML18073A0912018-03-14014 March 2018 NRC and Energy Public Meeting on Fatigue Analysis Related to River Bend License Renewal Project stage: Meeting ML18073A0482018-03-19019 March 2018 License Renewal Application Review Response to Request for Due Date Extension for Request for Additional Information Set 10 Project stage: RAI ML18078A7552018-03-28028 March 2018 Telephone Call Summary on Applicant'S Response to RAI B1.4-1 & B.1.4-2 (Set 5) on 030618 Rev 2 - All Edits Incorp Project stage: RAI ML18078A7482018-03-29029 March 2018 Uranium One Public Meeting Feb. 22, 2018 Project stage: Meeting ML18071A0182018-03-29029 March 2018 Telephone Call Summary RAI 3.2.2.3.2-1a Generic Filtration on 27FEB2018 v1_RBS Edits incorp._030618 Project stage: RAI ML18089A0762018-04-12012 April 2018 03/13/2018 Summary of Public Telephone Conference Call Held on Between the U.S. Nuclear Regulatory Commission and Entergy Regarding Requests for Additional Information Pertaining to the River Bend Station, Unit 1 License Renewal Application Project stage: RAI ML18107A5042018-04-24024 April 2018 03/29/2018 Summary of Public Telephone Conference Call Between the U.S. Nuclear Regulatory Commission and Entergy Regarding the Need for Additional Information to Support the River Bend Station, Unit 1 License Renewal Application Review Project stage: Other ML18121A0292018-04-30030 April 2018 Final Requests for Additional Information for the Safety Review of the River Bend Station License Renewal Application (CAC No. MF9757) - Set 14 Project stage: RAI RBG-47863, Annual Radioactive Effluent Release Report for 20172018-05-0101 May 2018 Annual Radioactive Effluent Release Report for 2017 Project stage: Request RBG-47862, Annual Radiological Environmental Operating Report for 20172018-05-0101 May 2018 Annual Radiological Environmental Operating Report for 2017 Project stage: Request ML18124A0092018-05-0303 May 2018 Final Requests for Additional Information for the Safety Review of the River Bend Station License Renewal Application (CAC No. MF9757) - Set 15 Project stage: RAI ML18120A1352018-05-10010 May 2018 Call Summary - Fuel Oil, Ext.-Int. Surf. Monitoring, FAC & Others 041018, Rev2 Project stage: Other ML18127A0342018-05-25025 May 2018 Summary of Public Telephone Conference Call Held on April 18, 2018, Between the U.S. Nuclear Regulatory Commission and Entergy Regarding the Need for Additional Information to Support the RBS Unit 1 License Renewal Application Review Project stage: Other ML18124A1902018-05-25025 May 2018 Summary of a Telephone Conference Call Held on April 25, 2018, Between the U.S. Nuclear Regulatory Commission and Entergy Regarding the Need for Additional Information to Support the River Bend Station, Unit 1 License Renewal Application Re Project stage: Other ML18129A3562018-05-29029 May 2018 April 26, 2018 Summary of a Telephone Conference Call Between NRC and Entergy Regarding the Need for Additional Information to Support the River Bend Station, Unit 1 License Renewal Application Review Project stage: Other ML18151A0822018-05-30030 May 2018 Summary of a Telephone Conference Call Held on May 21, 2018, Between NRC and Entergy Regarding the Need for Additional Information to Support the River Bend Station License Renewal Application Project stage: Other ML18143B3962018-06-0404 June 2018 05/03/2018 Summary Telephone Conference with Entergy Regarding the Need for Additional Information to Support the River Bend Station Unit 1 License Renewal Application Review. Project stage: Other ML18155A5502018-06-14014 June 2018 Summary of a Telephone Conference Call Held on May 17, 2018, Between the U.S. Nuclear Regulatory Commission and Entergy Regarding the Need for Additional Information to Support the River Bend Station Unit 1 License Renewal Application Revie Project stage: Other RBG-47879, Comments on Plant-Specific Supplement 58 to the Generic Environmental Impact Statement for License Renewal of Nuclear Plants Regarding River Bend Station, Unit 1, Draft Report for Comment2018-07-12012 July 2018 Comments on Plant-Specific Supplement 58 to the Generic Environmental Impact Statement for License Renewal of Nuclear Plants Regarding River Bend Station, Unit 1, Draft Report for Comment NRC-2017-0141, Comment (4) of Anonymous Individual on Entergy Operations, Inc.; River Bend Station, Unit 1 Renewal2018-07-23023 July 2018 Comment (4) of Anonymous Individual on Entergy Operations, Inc.; River Bend Station, Unit 1 Renewal Project stage: Request ML18206A4532018-07-23023 July 2018 Comment (3) of Anonymous Individual Opposing to Entergy Operations, Inc.; River Bend Station, Unit 1 Renewal Project stage: Request ML18206A4512018-07-23023 July 2018 Comment (2) from Anonymous on Entergy Operations, Inc.; River Bend Station, Unit 1 Project stage: Request ML18206A4502018-07-23023 July 2018 Comment (1) of Edward Festner Opposing to Entergy Operations, Inc.; River Bend Station, Unit 1 Renewal Project stage: Request ML18212A1792018-07-31031 July 2018, 16 August 2018 Safety Evaulation Report Related to the License Renewal of River Bend Station, Unit 1, Docket No. 50-458, Entergy Operations, Inc. and Entergy Louisiana, LLC Project stage: Request ML18241A3212018-08-29029 August 2018 Fws to NRC, Concurrence with the Nrc'S Determination That River Bend License Renewal Is Not Likely to Adversely Affect the Pallid Sturgeon Project stage: Other ML18291B1472018-10-18018 October 2018 Revision of the River Bend License Renewal Safety Evaluation Report Project stage: Approval ML18310A0722018-11-30030 November 2018 NUREG-1437, Supplement 58, Generic Environment Impact Statement for License Renewal of Nuclear Plants Supplement 58 Regarding River Bend Station, Unit 1, Final Report Project stage: Acceptance Review ML18277A2872018-12-20020 December 2018 Issuance of Renewed Facility Operating License No. NPF-47 for River Bend Station, Unit 1 Project stage: Approval 2018-03-29
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Category:E-Mail
MONTHYEARML23348A1222023-12-14014 December 2023 NRR E-mail Capture - Grand Gulf, River Bend, and Waterford, Unit 3 - 2nd Round of Official RAIs for RR EN-RR-22-001, Use ASME Code Case N-752, Risk Informed Categorization for Class 2 and 3 Systems ML24031A2772023-11-27027 November 2023 (05000458/2024040) IP 95001 Regarding EA-23-071 Initial Request for Information ML23240A3412023-08-28028 August 2023 NRR E-mail Capture - ANO-2, Grand Gulf, and River Bend - Acceptance Review of LAR Revising TSs to Adopt TSTF-205, Revision of Channel Calibration, Channel Functional Test, and Related Definitions ML23207A0762023-07-14014 July 2023 EN 56557 - Update to Part 21 Report Re Potential Defect with Trane External Auto/Stop Emergency Stop Relay Card Pn: XI2650728-06 ML23159A0052023-06-0505 June 2023 56557-EN 56557 - Paragon - Redlined ML23116A1462023-04-26026 April 2023 NRR E-mail Capture - Entergy Fleet (Grand Gulf and River Bend) - Final RAI for Request to Update ASME Code Relief Request Safety Evaluations with NRC-Approved Revision of BWRVIP Guidelines (GG-ISI-020, and RBS-ISI-019) ML23103A4662023-04-0404 April 2023 NRR E-mail Capture - River Bend Station, Unit 1 - Acceptance Review for LAR to Adopt TSTF-505, Rev. 2, Provide Risk-Informed Extended Completion Times - RITSTF Initiative 4b ML23103A4672023-04-0404 April 2023 NRR E-mail Capture - River Bend Station, Unit 1 - Acceptance Review for LAR to Adopt 10 CFR 50.69, Risk-Informed Categorization and Treatment of Structures, Systems and Components for Nuclear Power Reactors ML23089A0702023-03-29029 March 2023 TSTF-505 Email Providing Reference for 0.3g HCLPF Value ML23072A3672023-03-0909 March 2023 NRR E-mail Capture - Entergy Fleet - Acceptance Review of Quality Assurance Program Manual Reduction in Commitment ML23009B6912023-01-0909 January 2023 NRR E-mail Capture - Grand Gulf, Unit 1 and River, Unit 1 - Acceptance of Requested Licensing Action Request to Update ASME Code RR SE with NRC-Approved Revision of BWRVIP Guidelines ML22206A0152022-07-21021 July 2022 NRR E-mail Capture - Entergy (Grand Gulf, River Bend, and Waterford-3) - Acceptance Review of the RR EN-RR-22-001, Case N-752, Risk-informed Cat & Treatment for Repair/Replacement Activities in Class 2 & 3 Systems ML22173A0372022-06-21021 June 2022 NRR E-mail Capture - Entergy (Grand Gulf and River Bend) - Acceptance Review of the License Amendment Request to Revise Technical Specifications to Adopt TSTF-580, Provide Exception from Entering Mode 4 with No Operable RHR Shutdown Cooling ML21356A5882021-12-22022 December 2021 NRR E-mail Capture - Acceptance for Review: River Bend Station 1 - IST Program Relief Request for PIV Testing Frequency ML21312A4792021-11-0505 November 2021 Email: NRC Staff Preliminary Questions Regarding X Energy LLC Xe-100 Topical Report: Risk-Informed Performance-Based Licensing Basis Development ML21308A5602021-11-0404 November 2021 NRR E-mail Capture - Arkansas Nuclear One, Units 1 and 2, Grand Gulf, River Bend, and Waterford, Unit 3 - Acceptance Review of LAR to Adopt TSTF-554, Revise Reactor Coolant Leakage Requirements ML21292A0112021-10-18018 October 2021 NRR E-mail Capture - ANO, 1 and 2, Grand Gulf, River Bend, Waterford, 3 - Acceptance Review of LAR to Adopt TSTF-541, Add Exceptions to Surveillance Requirements for Valves and Dampers Locked in the Actuated Position ML21218A0412021-07-19019 July 2021 NRR E-mail Capture - River Bend Unit 1 - Acceptance of License Amendment Request to Add License Condition Concerning Receipt, Possession ML21174A0342021-06-22022 June 2021 NRR E-mail Capture - Entergy Fleet (ANO, Ggulf, Rbend, & Waterford) - Acceptance Review for Relief Request to Use a Provision of a Later Edition of the ASME Code, Section XI for Periodic System Pressure Tests Exemptions ML21109A2142021-04-19019 April 2021 NRR E-mail Capture - Entergy Fleet (Grand Gulf and River Bend) - Rev. Est Hours for Review of Relief Request (RR) - ASME Code RR Safety Eval with NRC-Approved Rev of BWRVIP Guidelines (GG-ISI-020 and RBS-ISI-019) ML21099A0312021-03-30030 March 2021 Email 3-30-2021 - Request for Information_ RBS EP Exercise Inspection (Week of 5_10_2021) ML21109A2132021-03-23023 March 2021 NRR E-mail Capture - Entergy Fleet (Grand Gulf and River Bend) - Relief Request (RR) Associated with ASME Code RR Safety Evaluations with NRC-Approved Revision of BWRVIP Guidelines (GG-ISI-020 and RBS-ISI-019) ML21068A4092021-03-0909 March 2021 NRR E-mail Capture - Entergy Fleet (GGNS and RBS) -Approval of TSTF-501 LAR, Relocate Sored Fuel Oil and Lube Oil Volume Values to Licensee Control ML21022A1692021-01-22022 January 2021 NRR E-mail Capture - Entergy Fleet (ANO, Grand Gulf, River Bend, and Waterford) - Acceptance Review for RR EN-20-RR-003, Proposed Alternative to Use ASME Code Case N-711-2 ML21015A3452021-01-14014 January 2021 NRR E-mail Capture - Grand Gulf and River Bend - Revised Estimated Hours for Relief Request Associated with ASME Code RR SEs with NRC-Approved Revision of BWRVIP Guidelines (GG-ISI-020 and RBS-ISI-019) ML20337A1382020-11-23023 November 2020 Acceptance of License Amendment Request to Adopt GL 86-10 Standard License Condition for Fire Protection ML20329A1442020-11-20020 November 2020 Terrapower QAPD Preliminary Questions Email ML20317A2922020-10-15015 October 2020 Entergy Operations, Inc. (River Bend Station, Unit 1) - Acceptance Review of License Amendment Request to Revise Technical Specifications to Adopt TSTF-582, Reactor Pressure Vessel Water Inventory Control (RPV WIC) Enhancements ML20289A3542020-10-14014 October 2020 NRR E-mail Capture - Entergy Fleet (Grand Gulf and River Bend) - Acceptance Review of TSTF-563 LAR, Revise Instrument Testing Definitions to Incorporate the Surveillance Frequency Control Program ML20255A1892020-09-0909 September 2020 Email 09Sept2020 - RFI for RBS EP Exercise Inspection ML20260H4422020-09-0808 September 2020 NRR E-mail Capture - Entergy Fleet (Grand Gulf and River Bend) - Official RAIs for RR Associated with Updating ASME Code RR SEs with NRC-Approved Revision of BWRVIP Guidelines (GG-ISI-020 and RBS-ISI-019) ML20169A3782020-06-16016 June 2020 Email-20-0196-NRC Riv Response V. Dricks to Tom Gurdziel Inquiry: Extent of Condition Flex Equipment ML20169A6752020-05-20020 May 2020 Email-20-0196, Tom Gurdziel Inquiry to NRC Chairman Resource, Extent of Condition FLEX Equipment, 05/20/2020 ML20093C3072020-04-0101 April 2020 NRR E-mail Capture - (External_Sender) Entergy Fleet - Performance-Based Cyber Security Testing Plan Fee Waiver Response Letter (EPID P-2020-PRF-0000; CAC No. 001648) ML20086J6572020-03-26026 March 2020 NRR E-mail Capture - River Bend Station, Unit 1 -Acceptance Review of the LAR Associated with Extending the Implementation Date from 5/13/2020 to 9/30/2020 for Emergency Action Level Scheme ML20079D9302020-03-19019 March 2020 NRR E-mail Capture - Entergy Fleet (Grand Gulf and River Bend) - Acceptance Review of LAR Associated with Adopting TSTF-501, Relocate Stored Fuel Oil and Lube Oil Volumes to Licensee Control ML20057G1752020-02-24024 February 2020 NRR E-mail Capture - Entergy Fleet (Grand Gulf and River Bend) - Acceptance Review of LAR Associated with TSTF-566, Revise Actions for Inoperable RHR-Shutdown Cooling Subsystems ML20057G1592020-02-24024 February 2020 NRR E-mail Capture - Entergy Fleet (Grand Gulf and River Bend) - Acceptance Review of LAR Associated with TSTF-439, Eliminate Second Completion Times Limiting Time from Discovery of Failure to Meet an LCO ML20038A2092020-02-0404 February 2020 05000458 Request for Information IR2020-001 Occupational Radiation Safety ML19352F5222019-12-17017 December 2019 NRR E-mail Capture - Acceptance Review Results for License Amend Request to Revise TS 3.3.5.2 to Adopt TSTF-425, Rev 3, Relocate Surveillance Frequencies to Licensee Control - RITSTF Initiative 5b, for River Bend, ML19102A0722019-04-11011 April 2019 NRR E-mail Capture - River Bend Station, Unit 1 - Final Request for Additional Information Relief Request RBS-ISI-021 ML19095B7622019-04-0303 April 2019 Acceptance Review Results for License Amendment Request to Adopt TSTF-564, Revision 2, Safety Limit MCPR (Minimum Critical Power Ratio), for Grand Gulf Nuclear Station, Unit 1 and River Bend Station, Unit 1 (EPID L-22019-LLA-0051) ML19059A1782019-02-28028 February 2019 Acceptance Review Results for Relief Request No. EN-19-RR-1 to Use ASME Code Case N-831-1 for Entergy Fleet ML19059A0292019-02-27027 February 2019 NRR E-mail Capture - Acceptance Review Results for License Amendment Request to Adopt TSTF-529, Revision 4, Clarify Use and Application Rules, for Entergy Fleet ML19008A3592019-01-0808 January 2019 NRR E-mail Capture - Acceptance Review: RR Volumetric Exams (L-2018-LLR-0388) ML18365A1422018-12-28028 December 2018 NRR E-mail Capture - Acceptance Review Results - Removal of TS Table of Contents (L-2018-LLA-0489) ML18337A0052018-11-30030 November 2018 Acceptance Review Results: River Bend Station License Amendment Request New Spent Fuel Pool Criticality Analysis ML18337A3422018-11-14014 November 2018 Email from EPA Region 6 to David Drucker Nrr/Dmlr/Mrpb Acknowledging Receipt of Link to Generic Environmental Impact Statement for License Renewal of Nuclear Plants, Supplement 58, Regarding River Bend Station, Unit 1 ML18304A4612018-10-31031 October 2018 NRR E-mail Capture - Final RAI River Bend TSFTF-425 (L-2018-LLA-0056) ML18291B1472018-10-18018 October 2018 Revision of the River Bend License Renewal Safety Evaluation Report 2023-08-28
[Table view] Category:Request for Additional Information (RAI)
MONTHYEARML23348A1222023-12-14014 December 2023 NRR E-mail Capture - Grand Gulf, River Bend, and Waterford, Unit 3 - 2nd Round of Official RAIs for RR EN-RR-22-001, Use ASME Code Case N-752, Risk Informed Categorization for Class 2 and 3 Systems ML23311A4322023-11-0909 November 2023 Notification of NRC Supplemental Inspection (95001) and Request for Information ML23195A0692023-07-24024 July 2023 2023 River Bend Station Notification of Biennial Problem Identification and Resolution Inspection and Request for Information ML23116A1462023-04-26026 April 2023 NRR E-mail Capture - Entergy Fleet (Grand Gulf and River Bend) - Final RAI for Request to Update ASME Code Relief Request Safety Evaluations with NRC-Approved Revision of BWRVIP Guidelines (GG-ISI-020, and RBS-ISI-019) ML23081A4602023-03-22022 March 2023 RFI River Bend CETI 2023012 Drr ML23004A0422023-01-0404 January 2023 License Renewal Phase 1 Request for Information ML22354A0812022-12-20020 December 2022 Inservice Inspection Request for Information ML22235A1082022-08-19019 August 2022 RBS Emergency Preparedness (EP) Exercise Inspection October 2022 RFI ML22180A0612022-06-29029 June 2022 Notification of an NRC Fire Protection Baseline Inspection (NRC Inspection Report 05000458/2022010) and Request for Information ML20350B8112020-12-11011 December 2020 2021 RBS PIR Request for Information ML20337A4452020-12-0202 December 2020 Riverbend Station Inservice Inspection Request for Information ML20255A1892020-09-0909 September 2020 Email 09Sept2020 - RFI for RBS EP Exercise Inspection ML20260H4422020-09-0808 September 2020 NRR E-mail Capture - Entergy Fleet (Grand Gulf and River Bend) - Official RAIs for RR Associated with Updating ASME Code RR SEs with NRC-Approved Revision of BWRVIP Guidelines (GG-ISI-020 and RBS-ISI-019) ML20162A1122020-06-10010 June 2020 Notification of Inspection (NRC Inspection Report 05000458/2020003) and Request for Information ML20126G3922020-05-0101 May 2020 Request for Information, May 01, 2020, River Bend Station Special Inspection, NRC Inspection Report 2020050 ML20038A2092020-02-0404 February 2020 05000458 Request for Information IR2020-001 Occupational Radiation Safety ML19102A0722019-04-11011 April 2019 NRR E-mail Capture - River Bend Station, Unit 1 - Final Request for Additional Information Relief Request RBS-ISI-021 ML18250A3112018-09-0404 September 2018 NRR E-mail Capture - Final RAI - RBS EAL Scheme Change LAR (L-2018-LLA-0130) ML18229A0082018-08-16016 August 2018 NRR E-mail Capture - Final Request for Additional Information for P-T Curves - NON-PROPRIETARY Version ML18250A3102018-08-0101 August 2018 NRR E-mail Capture - Draft RAI - RBS EP EAL Scheme Change LAR (L-2018-LLA-0130) ML18151A0822018-05-30030 May 2018 Summary of a Telephone Conference Call Held on May 21, 2018, Between NRC and Entergy Regarding the Need for Additional Information to Support the River Bend Station License Renewal Application RBG-47861, Response to License Renewal Application NRC Request for Additional Information Sets 14,15 and Operating Experience Review Clarification2018-05-29029 May 2018 Response to License Renewal Application NRC Request for Additional Information Sets 14,15 and Operating Experience Review Clarification ML18149A2882018-05-24024 May 2018 NRR E-mail Capture - River Bend Station Request for Additional Information - Reactor Core Isolation Cooling Piping Modification (L-2018-LLA-0029) ML18141A3172018-05-21021 May 2018 OE Draft RAI 3-0-5 Rogers ML18141A4882018-05-21021 May 2018 Draft Response (RAI 3.6.2.2.2.2-1a) from LRA Review Revised After the May 17, 2018 Call ML18131A2412018-05-11011 May 2018 RBS 012 Item 158a Response (RAI 3.2.2.3.2-1a) Revised - Received on 05/10/2018 ML18124A0092018-05-0303 May 2018 Final Requests for Additional Information for the Safety Review of the River Bend Station License Renewal Application (CAC No. MF9757) - Set 15 ML18122A2312018-05-0202 May 2018 Draft Response to NRC Request for Additional Information (RAI) B.1.40-5 Service Water Integrity Generated from Staffs Review on the River Bend Station, Unit 1 License Renewal Application ML18122A1262018-05-0202 May 2018 RAI B.1.17-1 Revised - w- header-footer-watermark ML18121A3022018-05-0101 May 2018 Draft Response to NRC Request for Additional Information (RAI) 4.6-2a Generated from Staff'S Review on the River Bend License Renewal Application ML18121A0292018-04-30030 April 2018 Final Requests for Additional Information for the Safety Review of the River Bend Station License Renewal Application (CAC No. MF9757) - Set 14 ML18115A1632018-04-25025 April 2018 Draft Response on RBS LRA RAI B.1.21-2 Flow Accelerated Corrosion ML18113A3322018-04-23023 April 2018 035 RB Buried Pipe 3rd Round RAI - Allik Holston ML18103A0152018-04-12012 April 2018 NRR E-mail Capture - Summary of Public Telephone Conference Call Held on March 27, 2018, Between the U.S. Nuclear Regulatory Commission and Entergy and Final Requests for Additional Information for the Safety Review of the River Bend Statio ML18073A0912018-03-14014 March 2018 NRC and Energy Public Meeting on Fatigue Analysis Related to River Bend License Renewal ML18068A1872018-03-0909 March 2018 Revision of Final Request for Additional Information (RAI 2.3.3.17-2) for the Safety Review of the River Bend Station License Renewal Application (CAC No. MF9757) - Set 11 RBG-47834, Response to License Renewal Application NRC Request for Additional Information (RAI) Set 92018-03-0808 March 2018 Response to License Renewal Application NRC Request for Additional Information (RAI) Set 9 ML18065A2132018-03-0606 March 2018 Final Requests for Additional Information for the Safety Review of the River Bend Station License Renewal Application (CAC No. MF9757) - Set 12 ML18060A1532018-03-0101 March 2018 NRR E-mail Capture - River Bend Station: Request for Additional Information Concerning New Technical Specification for Control Building Air Conditioning (L-2017-LLA-0291) ML18058A0572018-02-23023 February 2018 Enclosurequest for Additional Information (Letter to J. Giddens Request for Additional Information Regarding Entergy Operations, Inc.'S Decommissioning Funding Plan Update) ML18043A3512018-02-12012 February 2018 Final Requests for Additional Information for the Safety Review of the River Bend Station License Renewal Application (CAC No. MF9757) - Set 11 ML18043A0082018-02-0808 February 2018 Final Requests for Additional Information for the Safety Review of the River Bend Station License Renewal Application (CAC No. MF9757) - Set 10 ML18038B4702018-02-0707 February 2018 NRR E-mail Capture - Fyi_River Bend Station RAIs Set 9 ML18022A9412018-01-22022 January 2018 Final Requests for Additional Information for the Safety Review of the River Bend Station License Renewal Application (CAC No. MF9757) - Set 8 ML18011A0462018-01-10010 January 2018 Notification of Cyber Security Inspection (NRC Inspection Report 05000458/2018406) and Request for Information IR 05000458/20184062018-01-10010 January 2018 River Bend Station - Notification of Cyber Security Inspection (NRC Inspection Report 05000458/2018406) and Request for Information ML18009A9092018-01-0909 January 2018 Final Requests for Additional Information for the Safety Review of the River Bend Station License Renewal Application (CAC No. MF9757) - Set 7 ML17361A3962017-12-27027 December 2017 Final Requests for Additional Information for the Safety Review of the River Bend Station License Renewal Application (CAC No. MF9757) - Set 6 ML17347B4242017-12-13013 December 2017 Final Requests for Additional Information for the Safety Review of the River Bend Station License Renewal Application (CAC No. MF9757) - Set 4 ML17347B4322017-12-13013 December 2017 Final Requests for Additional Information for the Safety Review of the River Bend Station License Renewal Application (CAC No. MF9757) - Set 5 2023-07-24
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1 NRR-DMPSPEm Resource From: Wong, Albert Sent: Tuesday, March 06, 2018 9:10 AM To: wmagui1@entergy.com Cc: RidsNrrDmlr Resource; RidsNrrDmlrMrpb Resource; RidsNrrPMRiverBend Resource; RidsOgcMailCenter Resource; Wilson, George; Donoghue, Joseph; Sayoc, Emmanuel; Wong, Albert; Min, Seung; Holston, William; Gavula, James; Gardner, William; Allik, Brian; Oesterle, Eric; Alley, David; Martinez Navedo, Tania; Bailey, Stewart; Wittick, Brian;
Ruffin, Steve; Bloom, Steven; Regner, Lisa; Tu rk, Sherwin; Sowa, Jeffrey; Parks, Brian; Pick, Greg; Kozal, Jason; Young, Cale; Yo ung, Matt; Werner, Greg; McIntyre, David; Dricks, Victor; Moreno, Angel; Burnell, Scot t; 'Broussard, Thomas Ray'; Lach, David J; SCHENK, TIMOTHY A; 'Coates, Alyson'
Subject:
FINAL REQUESTS FOR ADDITIONAL INFORMATION FOR THE SAFETY REVIEW OF THE RIVER BEND STATION LICE NSE RENEWAL APPLICATION (CAC NO. MF9757) - SET 12 Attachments:
RAI Set 12 Enclosure - CLEAN Final_6 RAIs_030118.pdfDocket No. 50-458
Dear Mr. Maguire:
By letter dated May 25, 2017 (Agencywide Documents Access and Management System (ADAMS) Accession No.
ML17153A282), Entergy Operations, Inc. (the applicant) submitted an application pursuant to Title 10 of the Code of Federal Regulations Part 54, "Requirements for Renewal of Operating Licenses for Nuclear Power Plants," to renew the operating license NPF-47 for River Bend Station.
Following staff's review of the applicant's response to RAI 3.2.2.3.2-1 (generic filtration) (ADAMS ML18010A848), dated January 10, 2018, the staff requested a public telephone conference with the applicant to discuss staff concerns regarding this RAI response. On February 22, 2018, the NRC staff sent Entergy, Inc. five RAIs related to the Fatigue Monitoring Aging Management Program (AMP). Entergy Operations, Inc. subsequently informed the NRC staff that a clarification call was needed to discuss the information requested in these Fatigue Monitoring AMP RAIs. The public telephone conference call on generic filtration and the clarification call on fatigue monitoring were held on February 27, 2018. The final RAIs associated with fatigue monitoring are enclosed as well as a follow-up RAI (RAI 3.2.2.3.2-1a) on the response to RAI 3.2.2.3.2-1.
David Lach of your staff agreed to provide a response to all the final RAIs within 30 days of the date of this email. The NRC staff will be placing a copy of this email in the NRC's Agencywide Documents Access and Management System.
Sincerely,
Emmanuel Sayoc, Project Manager Albert Wong for License Renewal Projects Branch (MRPB) Division of Materials and License Renewal Office of Nuclear Reactor Regulation
Docket No. 50-458
Enclosure:
As stated
2 OFFICE PM:MRPB:DMLR BC: MRPB:DMLR PM: MRPB:DMLR NAME ESayoc EOesterle ESayoc Albert Wong for DATE 02/28/2018 03/01/2018 03/05/2018 OFFICIAL RECORD COPY
Hearing Identifier: NRR_DMPS Email Number: 224 Mail Envelope Properties (Albert.Wong@nrc.gov20180306090900)
Subject:
FINAL REQUESTS FOR ADDITIONAL INFORMATION FOR THE SAFETY REVIEW OF THE RIVER BEND STATION LICENSE RENEWAL APPLICATION (CAC NO. MF9757) - SET 12 Sent Date: 3/6/2018 9:09:41 AM Received Date: 3/6/2018 9:09:00 AM From: Wong, Albert Created By: Albert.Wong@nrc.gov
Recipients: "RidsNrrDmlr Resource" <RidsNrrDmlr.Resource@nrc.gov> Tracking Status: None "RidsNrrDmlrMrpb Resource" <RidsNrrDmlrMrpb.Resource@nrc.gov> Tracking Status: None "RidsNrrPMRiverBend Resource" <RidsNrrPMRiverBend.Resource@nrc.gov> Tracking Status: None "RidsOgcMailCenter Resource" <RidsOgcMailCenter.Resource@nrc.gov>
Tracking Status: None "Wilson, George" <George.Wilson@nrc.gov> Tracking Status: None "Donoghue, Joseph" <Joseph.Donoghue@nrc.gov> Tracking Status: None "Sayoc, Emmanuel" <Emmanuel.Sayoc@nrc.gov>
Tracking Status: None "Wong, Albert" <Albert.Wong@nrc.gov> Tracking Status: None "Min, Seung" <Seung.Min@nrc.gov> Tracking Status: None "Holston, William" <William.Holston@nrc.gov> Tracking Status: None "Gavula, James" <James.Gavula@nrc.gov>
Tracking Status: None "Gardner, William" <Willi am.Gardner@nrc.gov> Tracking Status: None "Allik, Brian" <Brian.Allik@nrc.gov> Tracking Status: None "Oesterle, Eric" <Eric.Oesterle@nrc.gov>
Tracking Status: None "Alley, David" <David.Alley@nrc.gov> Tracking Status: None "Martinez Navedo, Tania" <Tania.MartinezNavedo@nrc.gov> Tracking Status: None "Bailey, Stewart" <Stewart.Bailey@nrc.gov> Tracking Status: None "Wittick, Brian" <Brian.Wittick@nrc.gov> Tracking Status: None "Ruffin, Steve" <Steve.Ruffin@nrc.gov> Tracking Status: None "Bloom, Steven" <Steven.Bloom@nrc.gov>
Tracking Status: None "Regner, Lisa" <Lisa.Regner@nrc.gov> Tracking Status: None "Turk, Sherwin" <Sherwin.Turk@nrc.gov>
Tracking Status: None "Sowa, Jeffrey" <Jeffrey.Sowa@nrc.gov> Tracking Status: None "Parks, Brian" <Brian.Parks@nrc.gov> Tracking Status: None "Pick, Greg" <Greg.Pick@nrc.gov>
Tracking Status: None "Kozal, Jason" <Jason.Kozal@nrc.gov> Tracking Status: None "Young, Cale" <Cale.Young@nrc.gov> Tracking Status: None "Young, Matt" <Ma tt.Young@nrc.gov> Tracking Status: None "Werner, Greg" <Greg.Werner@nrc.gov>
Tracking Status: None "McIntyre, David" <David.McIntyre@nrc.gov> Tracking Status: None "Dricks, Victor" <Victor.Dricks@nrc.gov> Tracking Status: None "Moreno, Angel" <Angel.Moreno@nrc.gov>
Tracking Status: None "Burnell, Scott" <Scott.Burnell@nrc.gov> Tracking Status: None
"'Broussard, Thomas Ray'" <tbrous1@entergy.com> Tracking Status: None "Lach, David J" <DLach@entergy.com>
Tracking Status: None "SCHENK, TIMOTHY A" <TSCHENK@entergy.com> Tracking Status: None "'Coates, Alyson'" <alacey@entergy.com> Tracking Status: None "wmagui1@entergy.com" <wmagui1@entergy.com> Tracking Status: None Post Office: Files Size Date & Time MESSAGE 1955 3/6/2018 9:09:00 AM RAI Set 12 Enclosure - CLEAN Final_6 RAIs_030118.pdf 159776 Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date: Recipients Received:
1 REQUEST FOR ADDITIONAL INFORMATION LICENSE RENEWAL APPLICATION RIVER BEND STATION, UNIT 1 DOCKET NO.: 50-458 CAC NO.: MF9757 Office of Nuclear Reactor Regulation Division of Materials and License Renewal 10 CFR § 54.21(a)(3) of 10 CFR requires an applicant to demonstrate that the effects of aging for structures and components will be adequately managed so that the intended function(s) will be maintained consistent with the current licensing basis for the period of extended operation.
One of the findings that the staff must make to issue a renewed license (10 CFR § 54.29(a)) is that actions have been identified and have been or will be taken with respect to the managing the effects of aging during the period of extended operation on the functionality of structures and components that have been identified to require review under § 54.21, such that there is reasonable assurance that the activities authorized by the renewed license will continue to be conducted in accordance with the current licensing basis (CLB). As described in SRP LR, an applicant may demonstrate compliance with 10 CFR 54.21(a)(3) by referencing the GALL Report. In order to complete its review and enable making a finding under 10 CFR § 54.29(a),
the staff requires additional information in regard to the matters described below.
RAI 3.2.2.3.2-1a (Generic Filtration Follow-up) Background The response to RAI 3.2.2.3.2-1, dated January 10, 2018, states that, unlike piping, strainers and filters (with the intended function of filtration) are designed to collect debris, whether from aging effects or other causes. Consequently, provisions have been incorporated into the system design or operation to manage the debris collection, so the active function of providing system flow can continue to be accomplished. An overall summary of the response indicates that flow blockage would be detectable by: a) alarmed differential pressure, b) local indication of differential pressure, or c) abnormal operation indicated through performance monitoring of temperatures, pressures, or flows. In addition, the response indicates that some of these components are also periodically inspected and cleaned.
In its discussion regarding the IPA required by 10 CFR 54.21, the industry guidance endorsed by Regulatory Guide 1.188, "Standard Format and Content for Applications to Renew Nuclear Power Plant Operating Licenses," states that the information to be documented by the applicant should include an identification of the AERM and an identification of the specific program or activities [emphasis added by staff] that will manage the effects of aging for each component.
For the strainer in the main steam positive leakage control system, LRA Table 3.3.2-6 indicates that only the strainer is exposed to a treated water environment, which is consistent with the response's discussion regarding the compressor seal water cooler outlet strainer. However, PID-27-20C also shows a strainer (STR10BA), which takes a suction from the auxiliary building atmosphere through a 0.125-inch perforated screen, indicating an environment of indoor air.
2 Issue 1) Although considerations for debris collection may be incorporated into the system design or operation, the industry guidance endorsed in Regulatory Guide 1.188 states that the IPA should include an identification of the specific program or activities that are used to manage aging effects. For components with an intended function of filtration, it is not clear to the staff that in all cases the proposed operational controls (e.g., for abnormal operation), or maintenance tasks (e.g., periodic inspections or cleaning of strainers) are linked to a specific program.
For the suppression pool suction strainers, it is also not clear how fouling is trended to ensure that accumulation of debris will not prevent an intended function from being met prior to the next inspection.
In addition, given the normal movement of control rods, it is not clear to the staff that normal operation will be adequate to detect potential flow blockage in the hydraulic control unit (HCU) filters.
- 2) For the strainer STR10BA in the main steam positive leakage control, it is not clear to the staff whether this component is within the scope of license renewal and whether LRA Table 3.3.2-6 includes a corresponding AMR item.
Request
- 1) For each component in the table below provide additional information as follows:
Table No. System Component Type Discussion from RAI Response 3.2.2-2 High Pressure Core Spray Suction Strainer Inspect and Clean 3.2.2-3 Residual Heat Removal Suction Strainer Inspect and Clean 3.2.2-4 Low Pressure Core Spray Suction Strainer Inspect and Clean 3.2.2-5 Reactor Core Isolation Cooling Suction Strainer Inspect and Clean 3.3.2-1 Control Rod Drive Filter Normal Operation will detect flow blockage. Inspect and replace during rebuilds
- a. For strainers where periodic inspections are performed, state: (a) the specific AMP to be used; (b) whether the maintenance tasks will be linked to the AMP; (c) how monitoring and trending will be conducted; and (d) the frequency of the inspections being credited. b. For the HCUs, state the basis for why monitoring during normal operation will be adequate to detect potential flow blockage of the filters. If monitoring might not be adequate, state the basis for why the periodicity of rebuilds provides reasonable assurance that the intended function of the control rods will be met.
- 2) For strainer STR10BA in the main steam positive leakage control system (PID-27-20C), provide additional information to clarify whether this component is within the scope of license renewal and, if so, state which aging management review item in LRA Table 3.3.2-6 is applicable.
3 RAI B.1.18-1: Fatigue Monitoring of Emergency and Faulted Transients Background The "parameters monitored or inspected" program element of GALL Report AMP X.M1, "Fatigue Monitoring," recommends that the program monitor and track all plant design transients that cause cyclic strains, which are significant contributors to the fatigue usage factor. The GALL Report AMP also states that the program ensures the fatigue usage remains within the allowable limit, thus minimizing fatigue cracking of metal components caused by cyclic strains in the material. LRA Section B.1.18 describes the applicant's Fatigue Monitoring Program.
During the audit, the staff noted that the following applicant procedure addresses the transients that are counted for fatigue management at the River Bend Station (RBS): EDP-MP-05, "Fatigue Management," Revision 2A. Specifically, Section 7.2, "Applicable Transient," of this procedure indicates that some adverse emergency or faulted transients may be counted as normal transients in the event the transients occur.
Issue It is not clear to the staff whether the applicant's monitoring of "some" emergency and faulted transients is consistent with the guidance in the GALL Report AMP that the program monitors all plant design transients that cause cyclic strains which are significant contributors to the fatigue usage factor.
Request Please clarify the use of the term "some" with respect to consistency between the LRA program and the guidance provided in the GALL report.
RAI B.1.18-2: Fatigue Management and Monitoring for Containment Components Background The "parameters monitored or inspected" program element of GALL Report AMP X.M1, "Fatigue Monitoring," recommends that that the program monitor and track all plant design transients that cause cyclic strains, which are significant contributors to the fatigue usage factor. The GALL Report AMP also states that the program ensures the fatigue usage remaining within the allowable limit, thus minimizing fatigue cracking of metal components caused by anticipated cyclic strains in the material. LRA Section B.1.18 describes the applicant's Fatigue Monitoring Program. LRA Section 4.6 addresses fatigue analyses for containment liner plate, metal containments and penetrations. LRA Section 4.6 also indicates the following: (1) fatigue analyses for the floor liner plate complies with the requirements of ASME Boiler and Pressure Vessel (B&PV) Code,Section III, Division 2; (2) fatigue analyses for the steel containment cylinder and dome complies with the requirements of ASME B&PV Code Section III, Division 1, Subsection NE; (3) detailed fatigue calculations were generated for the containment penetrations at River bend Station (RBS); and (4) containment structural components (e.g., polar crane, equipment hatch and drywell combination door/hatch assembly) are evaluated for fatigue.
4 In addition, LRA Section 4.6 indicates that the applicant will manage the aging effects due to fatigue for the containment components using the Fatigue Monitoring Program in accordance with 10 CFR 54.21(c)(1)(iii).
Issue During the audit, the staff noted that the applicant's procedure, EDP-MP-05 (Revision 2A) addresses counted fatigue transients and fatigue management activities. However, this procedure does not clearly describe fatigue monitoring and management activities for the containment liner plate, metal containments, containment penetrations, and other containment structural components (such as polar cranes).
During the audit, the staff also noted that the following Engineering Report provides recent updates to fatigue analysis and usage results for various pressure boundary piping components at RBS: RBS-EP-17-00006, Revision 0, "Fatigue Update for River Bend Nuclear Station Using FatiguePro Software." This report does not address fatigue analysis updates for the containment liner plate, cylinder, dome, penetrations and other structural components (such as polar cranes). Request Provide a description of the fatigue monitoring program for the containment liner plate, cylinder and dome, penetrations, and other structural components (such as polar cranes) or, alternatively, provide the documents that describe the fatigue monitoring program for these structural components.
RAI B.1.18-3: Corrective Action Program Element Background The "corrective action" program element of GALL Report AMP X.M1, "Fatigue Monitoring," states that the program provides for corrective actions to prevent the usage factor from exceeding the design code limit during the period of extended operation. The program element in the GALL Report also states that acceptable corrective actions include repair of the component, replacement of the component, and a more rigorous analysis of the component to demonstrate that the design code limit will not be exceeded during the period of extended operation.
The following reference describes the program elements and basis of the applicant's Fatigue Monitoring Program in comparison with those of GALL Repot AMP X.M1: Section 4.7., "Fatigue Monitoring" of RBS-EP-15-00006, Revision 0, "RBS License Renewal Project: Aging Management Program Evaluation Report Class 1 Mechanical."
Issue During the audit, the staff noted that the "corrective action" program element of the Fatigue Monitoring Program in the program basis document (RBS-EP-15-00006, Revision 0) does not address specific corrective actions such as repair of the component, replacement of the component, and a more rigorous analysis of the component. The program basis document only 5 refers to the corrective action program. The lack of these corrective actions from the "corrective action" program element appears inconsistent with the guidance in GALL Report AMP X.M1. Request Provide justification for why the program basis document does not address corrective actions such as component repair/replacement activities and more rigorous analyses. Alternatively, confirm whether the program includes relevant corrective actions in the "corrective action" program element.
RAI B.1.18-4: Operating Experience Background River Bend Station (RBS) Condition Report, CR-RBS-2016-00656 (1/22/2016) indicates the following information related to fatigue cycle monitoring: The FatiguePro software uses the COLLECT program to retrieve cycle and fatigue related data from the ERIS computer. During the retrieval of the cycle 18 data, it was noticed that the COLLECT program unexpectedly stopped automatically recording data from November 2012 to September 2013. The Collect computer has been restored to service. Data on the Collect computer was not recoverable.
Issue Data collection for fatigue cycles and related information is an important attribute for fatigue monitoring and management. The LRA does not provide information regarding this operating experience and resolution of the data collection issue. Request Describe how the applicant resolved the fatigue data collection issue that is addressed in CR-RBS-2016-00656 and discuss how loss of this data was addressed as part of the Fatigue Monitoring Program.
RAI B.1.18-5 Background The applicant's enhancement to the "preventive actions" program element of the Fatigue Monitoring Program states that an environmentally assisted fatigue analysis using NUREG CR-6909 will not use average temperature for complex transients. NUREG CR-6909 Report provides equations that can be used to calculate environmental fatigue correction factors.
Issue Given the applicant's statements concerning temperatures used in its fatigue analysis, it is not clear to the staff whether the applicant's analyses follow the guidance contained in NUREG CR-6909.
6 Request Please clarify whether the approach proposed is in accordance with NUREG CR-6909 and, if not, provide a description of how the approach used differs from the approved guidance and a basis for those differences. As part of the response, clarify what temperature is used to determine the environmental fatigue correction factor for complex thermal transients with multiple increasing and decreasing temperature excursions.