Letter Sequence RAI |
---|
|
|
MONTHYEARML20309A2012020-11-0404 November 2020 Radiation Safety Baseline Inspection Information Request Project stage: Request RA-20-0312, Relief Request, Service Water Pinhole Leak in a Socket Weld, Inservice Inspection Program, Fourth Ten-Year Interval2020-11-0404 November 2020 Relief Request, Service Water Pinhole Leak in a Socket Weld, Inservice Inspection Program, Fourth Ten-Year Interval Project stage: Request ML20328A0802020-11-23023 November 2020 NRR E-mail Capture - Acceptance Review - Shearon Harris Nuclear Power Plant, Unit 1 - RA-20-0312-Relief Request, Service Water Pinhole Leak in a Socket Weld, Inservice Inspection (L-2020-LLR-0143) Project stage: Acceptance Review ML21036A1142021-02-0505 February 2021 NRR E-mail Capture - Request for Additional Information - Harris - Relief Request RA-20-0312 - SW Pinhole Leak (L-2020-LLR-0143) Project stage: RAI RA-21-0067, Response to Request for Additional Information - Relief Request, Service Water Pinhole Leak in a Socket Weld, Inservice Inspection Program, Fourth Ten-Year Interval2021-02-25025 February 2021 Response to Request for Additional Information - Relief Request, Service Water Pinhole Leak in a Socket Weld, Inservice Inspection Program, Fourth Ten-Year Interval Project stage: Response to RAI ML21069A0642021-03-18018 March 2021 Alternative to ASME Section XI Code Requirements to Defer Repair of Emergency Service Water System Socket Weld Project stage: Other 2021-02-25
[Table View] |
|
---|
Category:E-Mail
MONTHYEARML24025A1592024-01-25025 January 2024 NRR E-mail Capture - Shearon Harris Nuclear Power Plant, Unit 1 - Request for Additional Information - Rvi AMP and Inspection Plan (L-2023-LLL-0016) ML23177A1992023-06-26026 June 2023 NRR E-mail Capture - Acceptance Review - Shearon Harris Nuclear Power Plant, Unit 1 - RA-23-0005 - LAR to Align Certain TSs with ISTS (L-2023-LLA-0078) ML23172A0132023-06-20020 June 2023 Duke Fleet - Correction to June 2, 2023, Request for Additional Information Proposed License Amendment Request to Revise Restrictive Surveillance Requirement Frequencies ML23153A1892023-06-0202 June 2023 Duke Fleet - Request for Additional Information Proposed License Amendment Request to Revise Restrictive Surveillance Requirement Frequencies ML23151A3482023-05-30030 May 2023 Duke Fleet - Request for Additional Information Proposed Alternative for Pressurizer Welds in Accordance with 10 CFR 50.55a(z)(1) ML23142A2732023-05-22022 May 2023 Duke Fleet - Request for Additional Information Proposed Alternative for Steam Generator Welds in Accordance with 10 CFR 50.55a(z)(1) ML23124A1212023-05-0404 May 2023 Acceptance of Requested Licensing Action Duke Fleet Proposed Alternative for Pressurizer Welds in Accordance with 10 CFR 50.55a(z)(1) ML23082A0432023-03-23023 March 2023 002 Radiation Safety Baseline Inspection Information Request Final ML23073A2282023-03-13013 March 2023 Duke Fleet- Adoption of TSTF-554, Revision 1, Revise Reactor Coolant Leakage Requirements - Acceptance Review ML23065A0942023-03-0606 March 2023 NRR E-mail Capture - Acceptance Review - Shearon Harris Nuclear Power Plant, Unit 1 - RA-22-0081 - LAR to Address Administrative Changes to the Operating License and Technical Specifications (L-2023-LLA-0020) ML23058A0562023-02-27027 February 2023 Acceptance of Amendment to Revise Surveillance Frequencies for RCS Pressure Isolation Valve Operational Leakage Testing and Reactor Trip System Instrumentation ML23048A1512023-02-16016 February 2023 Acceptance Review - Proposed Alternative for Steam Generator Welds (L-2023-LLR-0003) ML22237A1632022-08-25025 August 2022 004 Radiation Safety Baseline Inspection Information Request ML22115A1412022-04-25025 April 2022 NRR E-mail Capture - Duke Common EOF Relocation - Request for Addition Information ML22108A0182022-04-15015 April 2022 NRR E-mail Capture - Accepted for Review - Duke Energy Relief Request for Harris Nuclear Plant Inservice Testing Program Plan - Fourth Ten-Year Interval to Extend Type C Test to 75 Months ML22083A0702022-03-24024 March 2022 NRR E-mail Capture - Catawba Nuclear Station, Units 1 and 2, Shearon Harris Nuclear Power Plant, Unit 1, and McGuire Nuclear Station, Units 1 and 2 - Acceptance Review for TSTF-569 LAR ML22083A0282022-03-23023 March 2022 Email Snsb Safety Evaluation for Harris LAR to Revise Reactor Protection System TS ML22038A1572022-02-0707 February 2022 NRR E-mail Capture - Duke Energy Fleet - Acceptance of License Amendment Request Regarding Adoption of TSTF-541, Revision 2 ML22018A0272022-01-18018 January 2022 2022 All RFI Responses - Exercise and Program Inspections - Revl ML21361A0122021-12-23023 December 2021 NRR E-mail Capture - Accepted for Review - Duke Energy Fleet License Amendment Request to Relocate Emergency Operations Facility ML21354A8612021-12-15015 December 2021 NRR E-mail Capture - Request for Additional Information - Duke Fleet Request RA-19-0352 - Alternative for RPV Closure Stud Exams (L-2020-LLR-0156) ML21321A3782021-11-16016 November 2021 NRR E-mail Capture - Energy Harbor Fleet, Beaver Valley Units 1 and 2 and DAVIS-BESSEL Unit 1 - Acceptance of License Amendment Request Adoption of TSTF-554 EPID-L-2021-LLA-0193 ML21288A0802021-10-15015 October 2021 NRR E-mail Capture - Acceptance Review - Shearon Harris Nuclear Power Plant, Unit 1 - RA-21-0213 - Remove Limitations to Perform Certain SRs During Shutdown (L-2021-LLA-0167) ML21295A0372021-10-0505 October 2021 NRR E-mail Capture - Accepted for Review - Duke Energy Fleet License Amendment Request to Adopt TSTF-577 Revised Frequencies for Steam Generator Tube Inspections ML21252A0112021-08-30030 August 2021 NRR E-mail Capture - Acceptance Review - Shearon Harris Nuclear Power Plant, Unit 1- RA-21-0191 - Revised TS Related to Reactor Trip System Instrumentation (L-2021-LLA-0149) ML21189A0282021-07-0101 July 2021 NRR E-mail Capture - Acceptance Review - Shearon Harris Nuclear Power Plant, Unit 1 - RA-21-0112 - Revise TS to Reflect Development of TRM (L-2021-LLA-0108) ML21172A2432021-06-21021 June 2021 NRR E-mail Capture - Request for Additional Information - Harris RA-20-0252 - LAR to Remove Extraneous Requirements from OL and TS (L-2021-LLA-0027) ML21106A0112021-04-15015 April 2021 NRR E-mail Capture - Acceptance Review - Shearon Harris Nuclear Power Plant, Unit 1 - RA-21-0052 - Revise Containment Spray Nozzle Surveillance Frequency (L-2021-LLA-0058) ML21084A2492021-03-24024 March 2021 Notification of Inspection and Request for Information ML21084A2512021-03-22022 March 2021 NRR E-mail Capture - Acceptance Review - Shearon Harris Nuclear Power Plant, Unit 1 - RA-20-0252 - LAR to Remove Extraneous Content and Requirements from the OL and TS (L-2021-LLA-0027) ML21039A6382021-02-0808 February 2021 NRR E-mail Capture - Acceptance Review - Shearon Harris Nuclear Power Plant, Unit 1-RA-20-0311 - 10 CFR 50.69 Categorization Process to Reflect an Alternative Seismic Approach (L-2021-LLA-0003) ML21036A1142021-02-0505 February 2021 NRR E-mail Capture - Request for Additional Information - Harris - Relief Request RA-20-0312 - SW Pinhole Leak (L-2020-LLR-0143) ML21049A2632021-02-0404 February 2021 NRR E-mail Capture - Request for Additional Information - Duke Energy Fleet License Amendment Request to Revise Emergency Plan ML21033A8452021-02-0202 February 2021 NRR E-mail Capture - State Notification of Amendments to Shearon Harris Nuclear Power Plant, Unit 1 - Revision Minimum RCS Flow Rate and Update COLR References ML21033B1062021-02-0202 February 2021 NRR E-mail Capture - (External_Sender) (External) State Notification of Amendments to Shearon Harris Nuclear Power Plant, Unit 1 - Revision Minimum RCS Flow Rate and Update COLR References ML21032A0492021-02-0101 February 2021 NRR E-mail Capture - Request for Additional Information - Duke Fleet RA-20-0263 - Use of Later ASME B&Pv, XI for Repair - Replacement (L-2020-LLR-0124) ML21025A2922021-01-25025 January 2021 NRR E-mail Capture - (External_Sender) State Notification of Amendment to Shearon Harris Nuclear Power Plant, Unit 1 - Revise TS 3/4.4.9, Pressure/Temperature Limits - Reactor Coolant System ML21007A3722021-01-0707 January 2021 NRR E-mail Capture - Acceptance Review - Duke Fleet - RA-19-0352 - Proposed Alternative for Reactor Vessel Close Stud Examinations (L-2020-LLR-0156) ML21006A4302021-01-0606 January 2021 Acceptance Review - Duke Fleet RA-20-0207 Request to Revise the Technical Specification for Engineered Safety Feature Actuation System (ESFAS) Instrumentation ML21006A4042021-01-0606 January 2021 NRR E-mail Capture - State Notification of Amendment to Shearon Harris Nuclear Power Plant, Unit 1 - Revise TS 3/4.4.9, Pressure/Temperature Limits - Reactor Coolant System ML20345A3052020-12-10010 December 2020 NRR E-mail Capture - (External_Sender) (External) State Notification of Amendments to Shearon Harris Nuclear Power Plant, Unit 1 - Revise TS 3.3.3.6 and TS 3.9.2 ML20344A4192020-12-0909 December 2020 NRR E-mail Capture - State Notification of Amendments to Shearon Harris Nuclear Power Plant, Unit 1 - Revise TS 3.3.3.6 and TS 3.9.2 ML20328A0802020-11-23023 November 2020 NRR E-mail Capture - Acceptance Review - Shearon Harris Nuclear Power Plant, Unit 1 - RA-20-0312-Relief Request, Service Water Pinhole Leak in a Socket Weld, Inservice Inspection (L-2020-LLR-0143) ML20323A4072020-11-18018 November 2020 NRR E-mail Capture - Request for Additional Information - Brunswick License Exemption Request from 10CFR73 Annual Force on Force Exercise Requirements (EPIC L-2020-LLE-0180) ML20297A3102020-10-13013 October 2020 NRR E-mail Capture - Acceptance Review - Duke Fleet - RA-20-0191 - Request to Use a Provision of a Later Edition of the ASME B&PV Code, Section XI - IWA-5120, IWA-5213, IWA-5241, IWA-5242, and IWA-5250 (L-2020-LLR-0126) ML20297A3072020-10-13013 October 2020 NRR E-mail Capture - Request for Additional Information - Shearon Harris Nuclear Power Plant, Unit 1 - RCS Flowrate Reduction/Lbloca LAR ML20297A3082020-10-0707 October 2020 NRR E-mail Capture - Acceptance Review - Duke Fleet - RA-20-0263 - Request to Use a Provision of a Later Edition of the ASME B&PV Code, Section XI for Repair/Replacement (L-2020-LLR-0124) ML20297A3092020-10-0606 October 2020 NRR E-mail Capture - Acceptance Review - Duke Fleet - RA-20-0262 - Request to Use a Provision of a Later Edition of the ASME B&PV Code, Section XI - IWA-4540(b) (L-2020-LLR-0125) ML20274A0462020-09-29029 September 2020 Request for Additional Information Regarding License Amendment Request to Adopt TSTF-505, Revision 2 ML20247J3822020-09-0303 September 2020 Request for Additional Information - Shearon Harris Nuclear Power Plant, Unit 1 - Revise TS Related to Accident Monitoring and RFO Instrumentation 2024-01-25
[Table view] Category:Request for Additional Information (RAI)
MONTHYEARML24025A1592024-01-25025 January 2024 NRR E-mail Capture - Shearon Harris Nuclear Power Plant, Unit 1 - Request for Additional Information - Rvi AMP and Inspection Plan (L-2023-LLL-0016) ML23151A3482023-05-30030 May 2023 Duke Fleet - Request for Additional Information Proposed Alternative for Pressurizer Welds in Accordance with 10 CFR 50.55a(z)(1) ML23142A2732023-05-22022 May 2023 Duke Fleet - Request for Additional Information Proposed Alternative for Steam Generator Welds in Accordance with 10 CFR 50.55a(z)(1) ML23082A0432023-03-23023 March 2023 002 Radiation Safety Baseline Inspection Information Request Final ML23020A1252023-01-23023 January 2023 Notification of Target Set Inspection and Request for Information (NRC Inspection Report 05000400/2023403) ML22115A1412022-04-25025 April 2022 NRR E-mail Capture - Duke Common EOF Relocation - Request for Addition Information ML21354A8612021-12-15015 December 2021 NRR E-mail Capture - Request for Additional Information - Duke Fleet Request RA-19-0352 - Alternative for RPV Closure Stud Exams (L-2020-LLR-0156) ML21258A3652021-09-15015 September 2021 Notification of an NRC Fire Protection Team Inspection (FPTI) (NRC Inspection Report 05000400/2021011) and Request for Information (RFI) ML21172A2432021-06-21021 June 2021 NRR E-mail Capture - Request for Additional Information - Harris RA-20-0252 - LAR to Remove Extraneous Requirements from OL and TS (L-2021-LLA-0027) ML21036A1142021-02-0505 February 2021 NRR E-mail Capture - Request for Additional Information - Harris - Relief Request RA-20-0312 - SW Pinhole Leak (L-2020-LLR-0143) ML21049A2632021-02-0404 February 2021 NRR E-mail Capture - Request for Additional Information - Duke Energy Fleet License Amendment Request to Revise Emergency Plan ML21032A0492021-02-0101 February 2021 NRR E-mail Capture - Request for Additional Information - Duke Fleet RA-20-0263 - Use of Later ASME B&Pv, XI for Repair - Replacement (L-2020-LLR-0124) ML20323A4072020-11-18018 November 2020 NRR E-mail Capture - Request for Additional Information - Brunswick License Exemption Request from 10CFR73 Annual Force on Force Exercise Requirements (EPIC L-2020-LLE-0180) ML20297A3072020-10-13013 October 2020 NRR E-mail Capture - Request for Additional Information - Shearon Harris Nuclear Power Plant, Unit 1 - RCS Flowrate Reduction/Lbloca LAR ML20274A0462020-09-29029 September 2020 Request for Additional Information Regarding License Amendment Request to Adopt TSTF-505, Revision 2 ML20247J3822020-09-0303 September 2020 Request for Additional Information - Shearon Harris Nuclear Power Plant, Unit 1 - Revise TS Related to Accident Monitoring and RFO Instrumentation ML19331A4002019-11-27027 November 2019 Request for Additional Information Regarding Licensing Action to Modify the Departure from Nucleate Boiling Ratio Safety Limit to Address Transition to New Fuel Type ML19204A2682019-07-23023 July 2019 NRR E-mail Capture - Shearon Harris Nuclear Power Plant, Unit 1 Request for Additional Information for the Escw System TS AOT Extension and Removal of an Expired Note in TS Risk Informed LAR (L-2019-LLA-0025) ML19136A2712019-05-28028 May 2019 Supplemental Information Needed for Acceptance of Requested Licensing Action Regarding License Amendment Request to Modify the Departure from Nucleate Boiling Ratio Safety Limit to Address Transition to New Fuel Type ML19060A0912019-03-18018 March 2019 Request for Additional Information Regarding License Amendment Request to Adopt 10 CFR 50.69, Risk Informed Categorization and Treatment of Structures, Systems and Components for Nuclear Power Reactors ML19011A1372019-01-10010 January 2019 NRR E-mail Capture - Duke Energy Fleet RAIs - Relief Request 18-GO-001 - Proposed Alternative for Depth Sizing Qualification Examination of Welds (L-2018-LLR-0117) ML19007A3422018-12-21021 December 2018 NRR E-mail Capture - Duke Energy Fleet Draft RAIs - Relief Request 18-GO-001 - Proposed Alternative for Depth Sizing Qualification Examination of Welds (L-2018-LLR-0117) ML18332A4392018-11-28028 November 2018 NRR E-mail Capture - Shearon Harris Nuclear Power Plant, Unit 1 Request for Additional Information for EAL Scheme Changes ML18337A1272018-11-28028 November 2018 NRR E-mail Capture - Shearon Harris Nuclear Power Plant, Unit 1 Request for Additional Information Regarding the Rts/Esfas Trip Setpoints Modification LAR ML18264A0282018-10-0909 October 2018 RAI Regarding License Amendment Request to Adopt 10 CFR 50.69, Risk Informed Categorization Aad Treatment of Structures, Systems and Components for Nuclear Power Reactors ML18145A1812018-06-18018 June 2018 Request for Additional Information, License Amendment Request to Revise Updated Final Safety Analysis Report to Incorporate Tornado Missile Risk Evaluator Methodology Into Licensing Basis RA-18-0011, Response to Request for Supplemental Information Regarding Duke Energy'S Response to GL 2016-01 Monitoring of Neutron-Absorbing Materials in Spent Fuel Pools2018-05-30030 May 2018 Response to Request for Supplemental Information Regarding Duke Energy'S Response to GL 2016-01 Monitoring of Neutron-Absorbing Materials in Spent Fuel Pools ML18116A1052018-04-25025 April 2018 NRR E-mail Capture - Harris/Robinson RAIs - Change Technical Specifications to Support Performance of Core Reload Design and Safety Analyses (L-2017-LLA-0356) ML18108A7602018-04-18018 April 2018 NRR E-mail Capture - Harris/Robinson Draft RAIs - Change Technical Specifications to Support Performance of Core Reload Design and Safety Analyses (L-2017-LLA-0356) ML18058B2242018-02-26026 February 2018 Emailed Radiation Safety RFI ML18005A5482018-01-0808 January 2018 Request for Additional Information Regarding License Amendment Request for Spent Fuel Storage Pool Criticality Analyses (CAC No. MF9996; EPID L-2017-LLA-0303) ML17345A8772017-12-11011 December 2017 NRR E-mail Capture - Harris and Robinson Supplemental RAI - LAR to Adopt DPC-NE-3009-P, Revision 0, Thermal-Hydraulic Models for Transient Analysis, (L-2016-LLA-0012) ML17339A0722017-12-0404 December 2017 NRR E-mail Capture - Subject: Harris and Robinson Draft Supplemental RAIs - LAR to Adopt DPC-NE-3009-P, Revision 0, Thermal-Hydraulic Models for Transient Analysis, (L-2016-LLA-0012) ML17289A3062017-10-23023 October 2017 Shearon Harris Nuclear Plant, Unit 1 - Request for Additional Information Regarding License Amendment Request Proposing Changes to Emergency Diesel Generator Technical Specifications Surveillance Requirements (CAC No. MF9828; EPID L-2017-LLA-0244) ML17250B0172017-09-18018 September 2017 Shearon Harris, Unit 1 - Request for Additional Information Re: License Amendment Request Proposing New Set of Fission Gas Gap Release Fractions for High Burnup Fuel Rods that Exceed the LHGR Limit Detailed in RG 1.183, Table 3 (CAC No. MF9740) ML17241A0182017-08-30030 August 2017 Supplemental Information Needed for Acceptance of Requested Licensing Action Regarding Spent Fuel Storage Pool Criticality Analyses ML17192A4842017-07-11011 July 2017 NRR E-mail Capture - Duke Energy Fleet RAIs Alternative for Reactor Pressure Vessel Flange Threads Examination (MF9513 to MF9521) ML17123A1332017-05-0909 May 2017 Shearon Harris Nuclear Plant, Unit 1 - Request for Additional Information Re: License Amendment Request to Relocate Specific TS Parameters to the COLR, Remove Reference to a Plant Procedure as it Pertains to the COLR in TSs, etc. (CAC No. MF8894) ML17109A2912017-04-19019 April 2017 NRR E-mail Capture - Shearon Harris Nuclear Power Plant, Unit 1 Final Request for Additional Information Concerning LAR to Adopt TSTF-339, TSTF-5 and Other Administrative Changes ML16363A0112016-12-27027 December 2016 Notification of Shearon Harris Nuclear Power Plant Design Basis Assurance Inspection - U.S. Nuclear Regulatory Commission Inspection Report 05000400/2017007 ML16335A0462016-12-0606 December 2016 Shearon Harris Nuclear Power Plant, Unit 1 - Request for Additional Information Regarding License Amendment Request to Modify Diesel Fuel Oil Testing Surveillance Requirements (CAC No. MF7775) ML16288A0782016-10-26026 October 2016 Shearon Harris Nuclear Power Plant, Unit 1, and H.B. Robinson Steam Electric Plant, Unit No. 2 - Redacted, Request for Additional Information Re: Request to Adopt DPC-NF-2010 and DPC-NF-2011 Nuclear Design Methodology (CAC Nos. MF7693 and MF7694) ML16288A0042016-10-26026 October 2016 Shearon Harris Nuclear Plant, Unit 1 - Request For Additional Information Regarding License Amendment Request To Relocate The Explosive Gas Mixture And Liquid Holdup Tanks Technical Specifications Requirements (CAC No. MF8067) ML16223A4172016-08-0808 August 2016 Notification of Inspection and Request for Information ML16209A2642016-08-0202 August 2016 Shearon Harris Nuclear Plant, Unit 1 - Second Request For Additional Information Regarding License Amendment Request For A Temporary Change To Technical Specifications For The 'A' Emergency Service Water Pump Replacement (CAC No. MF7017) ML16028A1972016-02-0808 February 2016 Request for Additional Information Regarding License Amendment Request for a Temporary Change to Technical Specifications for the 'A' Emergency Service Water Pump Replacement ML15344A0302015-12-17017 December 2015 Request for Additional Information Application to Revise Technical Specifications for Methodology Report DPC-NE-2005-P, Revision 5, Thermal Hydraulic Statistical Core Design Methodology (MF5872/MF5873) ML15320A3862015-11-19019 November 2015 RAI LAR to Adopt TSTF-523 ML15314A3592015-11-10010 November 2015 Duke Energy Draft RAIs Request to Adopt TSTF-523 (CAC Nos. MF6413-MF6422) ML15314A3562015-11-10010 November 2015 E-mail from J. Whited to A. Zaremba Duke Energy Draft RAIs License Amendment Request to Adopt TSTF-523 (CAC Nos. MF6413-MF6422) 2024-01-25
[Table view] |
Text
From: Mahoney, Michael Sent: Friday, February 5, 2021 10:24 AM To: Dennis Earp (dennis.Earp@duke-energy.com)
Subject:
Request for Additional Information - Harris - Relief Request RA-20-0312 - SW Pinhole Leak (L-2020-LLR-0143)
Attachments: RAIs - Harris - Relief Request RA-20-0312 - SW Pinhole Leak (L-2020-LLR-0143).docx
- Dennis, Attached are RAIs for the subject Shearon Harris Nuclear Power Plant, Unit 1 request RA 0312, dated November 4, 2020 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML20309A774), where Duke Energy Progress, LLC (the licensee) requests NRC approval to defer implementation of American Society of Mechanical Engineers (ASME) Code repairs of a through-wall leak in the Emergency Service Water (ESW) System, to no later than the next schedule refueling outage.
Please provide your response to the attached RAIs within 30 days of the date of this electronic correspondence.
Once added to ADAMS, I will provide an accession number for this electronic correspondence.
Thanks Mike Mahoney Project Manager, LPL2-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Desk: (301)-415-3867 Mobile: (301)-250-0450 Email: Michael.Mahoney@nrc.gov
Hearing Identifier: NRR_DRMA Email Number: 1003 Mail Envelope Properties (MN2PR09MB55310263F565BF34FC1B2EB8E5B29)
Subject:
Request for Additional Information - Harris - Relief Request RA-20-0312 - SW Pinhole Leak (L-2020-LLR-0143)
Sent Date: 2/5/2021 10:23:52 AM Received Date: 2/5/2021 10:23:53 AM From: Mahoney, Michael Created By: Michael.Mahoney@nrc.gov Recipients:
"Dennis Earp (dennis.Earp@duke-energy.com)" <dennis.Earp@duke-energy.com>
Tracking Status: None Post Office: MN2PR09MB5531.namprd09.prod.outlook.com Files Size Date & Time MESSAGE 941 2/5/2021 10:23:53 AM RAIs - Harris - Relief Request RA-20-0312 - SW Pinhole Leak (L-2020-LLR-0143).docx 32382 Options Priority: Normal Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date:
REQUEST FOR ADDITIONAL INFORMATION REQUEST FOR ALTERNATIVE TO ASME CODE REPAIR REQUIREED BY IWA-4421 FOR SERVICE WATER PINHOLE LEAK DUKE ENERGY PROGRESS, LLC SHEARON HARRIS NUCLEAR POWER PLANT, UNIT 1 DOCKET NO. 50-400 EPID L-2020-LLR-0143
1.0 INTRODUCTION
By letter RA-20-0312, dated November 4, 2020 (Agencywide Documents Access and Management System (ADAMS) Accession No. ML20309A774), Duke Energy Progress, LLC (the licensee) requests NRC approval to defer implementation of American Society of Mechanical Engineers (ASME) Code repairs of a through-wall leak in the Emergency Service Water (ESW) System, to no later than the next schedule refueling outage for the Shearon Harris Nuclear Power Plant, Unit 1.
During the Nuclear Regulatory Commission (NRC) staffs review of the license amendment request, the NRC staff determined that additional information was needed to complete the review.
2.0 REGULATORY BASIS In order for the NRC staff to assess the licensees flaw evaluation and confirm that structural integrity of ESW piping is maintained, in accordance with the guidance provided in NRC Generic Letter 90-05, Guidance for Performing Temporary Non-Code Repair of ASME Code Class 1, 2, and 3 Piping, the NRC staff determined that the following information is needed.
3.0 REQUEST FOR ADDITIONAL INFORMATION (RAI)
RAI- 1 On Page 3 (of 5) the request, the licensee states, in part:
A flaw diameter of 0.100 inches was used to further evaluate the defect.
Ultrasonic testing (UT) measurements indicate some wall thinning, with pipe wall thickness varying between 0.150 inch and 0.167 inches around the pipe circumference. The lowest reading obtained was 0.137 inches at the root of the socket weld.
Additionally, in Enclosure 2 of the request, the licensee states, in part:
The pipe wall thickness varies between 0.150 inches and 0.167 inches around the pipe circumference with the lowest reading measured at 0.137
inches. Since the UT measurements indicate some wall thinning, the minimum wall thickness is also calculated.
- a. Does the referenced measurement range of 0.150 in (inches) to 0.167 in refer to the pipe wall thickness, which has a nominal pipe wall thickness of 0.179 in (for 1-inch schedule 80 pipe)?
- b. Is the measurement of 0.137 in the thickness of the sockolet? If so, what is the nominal thickness of the sockolet, in the location of the weld?
- c. Has the licensee assessed the loss of wall-thickness in the pipe, sockolet, and the return line, in the area where the sockolet is attached? Provide a basis for the determination that structural integrity is maintained.
- d. From the description in the request, it appears that the flaw is at the weld/sockolet interface originating from the root area. Confirm the location of the flaw.
RAI-2
On Page 3 (of 5) the request, the licensee states, in part:
An accurate measurement of the pinhole diameter could not be obtained since the size of the pinhole leak is small (less than 1/16 inch diameter).
The area of the leak was observed dripping at approximately 1 drop per minute.
- a. Describe the current state of the leakage.