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Category:E-Mail
MONTHYEARML24029A1132024-01-16016 January 2024
Notification of Inspection and Request for Information (Email)
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
ML23192A0552023-07-11011 July 2023
Relief Request Later Edition of ASME Code for ISI
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
ML23159A0052023-06-0505 June 2023
56557-EN 56557 - Paragon - Redlined
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)
ML23087A0282023-03-27027 March 2023
Acceptance of Requested Licensing Action Amendment TSTF-505
ML23087A2492023-03-27027 March 2023
50.69 Acceptance Email
ML23073A2282023-03-13013 March 2023
Duke Fleet- Adoption of TSTF-554, Revision 1, Revise Reactor Coolant Leakage Requirements - Acceptance Review
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)
ML23030B9032023-01-30030 January 2023
Formal Release of RAIs for McGuire Unit 1, Relief Request Impractical RPV Rx Coolant System Welds, Due March 1, 2023 (Email)
ML23017A2232023-01-13013 January 2023
Request for Additional Information (RAI) Issuance for McGuire Unit 1 Steam Generator Tube Inspection Report (Email)
ML22291A4602022-10-17017 October 2022
Relief Request Impractical RPV and Rx Coolant Sys. Welds
ML22242A1602022-08-30030 August 2022
Hardship Relief Request Pilot-Operated Relief Valve Acceptance Review Results
ML22115A1412022-04-25025 April 2022
NRR E-mail Capture - Duke Common EOF Relocation - Request for Addition Information
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
ML22049B0152022-02-17017 February 2022
NRC RP Inspection Document Request Letter
ML22038A1572022-02-0707 February 2022
NRR E-mail Capture - Duke Energy Fleet - Acceptance of License Amendment Request Regarding Adoption of TSTF-541, Revision 2
ML22024A3952022-01-24024 January 2022
Acceptance of Requested Licensing Action Amendment McGuire RCS PT Limits Change TS 3.4.3 and EFPY Changes
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)
ML21286A7812021-11-22022 November 2021
Acceptance of Requested Licensing Action Revision to the End of Cycle Moderator Temperature Coefficient Measurement Methodology
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
ML21252A0532021-09-0808 September 2021
NRR E-mail Capture - Formal Release of Rais, 30 Day Response, Mcguire Relief Request, Ref: Later Edition Addenda ASME Code, Section XI, 50.55a(g)(4)(iv)
ML21195A2022021-07-14014 July 2021
NRR E-mail Capture - McGuire Relief Request Acceptance Review Results; McGuire Unit 1 RR, Later Edition Addenda ASME Code, Section XI, 50.55a(g)(4)(iv)
ML21103A0542021-04-13013 April 2021
NRR E-mail Capture - Extension to Request for Additional Information AMS Topical Report AMS-TR-0720R1
ML21096A3002021-04-0606 April 2021
E-mail for Approval of Proprietary Withholding for Duke Energy Exemptions for the Magnastor Storage Cask
ML21096A2512021-04-0505 April 2021
NRR E-mail Capture - McGuire Emergency Plan Submittal, Letter Dated March 31 2021
ML21067A6742021-03-0505 March 2021
NRR E-mail Capture - Final Request for Additional Information AMS Topical Report AMS-TR-0720R1
ML21049A2632021-02-0404 February 2021
NRR E-mail Capture - Request for Additional Information - Duke Energy Fleet License Amendment Request to Revise Emergency Plan
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
ML20346A0212020-12-10010 December 2020
NRR E-mail Capture - Formal Release of RAIs - License Amendment to Change TS 3.8.1 Due Jan. 29, 2021
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)
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)
ML20216A3512020-08-0303 August 2020
Mcquire U-1 ISI RFI
ML20177A3792020-06-23023 June 2020
Email from L. Cox, North Carolina Department of Health and Human Services to NRC Regarding Exemption Request for Duke Energy'S McGuire Nuclear Station
ML20140A0852020-05-19019 May 2020
ADAMS 2D
ML20101L3132020-04-10010 April 2020
Notification of Inspection and Request for Information
ML20071D0962020-03-0505 March 2020
NRR E-mail Capture - Request for Additional Information - McGuire Nuclear Station Unit 1 Delay in Update of the Code of Record for in Service Inspections
ML20029E8592020-01-24024 January 2020
NRR E-mail Capture - McGuire Nuclear Station, Unit 1 -Acceptance of Requested Licensing Action Request to the 10-year ISI Interval Update
ML20015A3162020-01-14014 January 2020
1/7/2020, E-Mail from M. Coflin to DCR Approval of Exemption Request McGuire Nuclear Facility
ML20008D5592020-01-0707 January 2020
Email to Nc Shpo Exemption Request McGuire Nuclear Facility
2024-01-16
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Text
NRR-PMDAPEm Resource From: Miller, Ed Sent: Wednesday, April 09, 2014 3:14 PM To: 'Murphy, George M (George.Murphy2@duke-energy.com)'
Subject:
Draft RAI for AFW suction swap-over setpoint Attachments: Draft BOP RAI.docx
- George, The NRC staffs draft RAI (Balance of plant) for the subject LAR is attached to this e-mail. The draft RAI is not an official NRC staff request and is being provided to you to facilitate a subsequent conference call to determine: 1) If the questions clearly convey the NRC staff information needs; 2) Whether the regulatory basis for the questions is understood; and 3) Whether the information is already available in existing, docketed, correspondence. After youve had a chance to review the draft information request, please contact me to schedule the conference call. Thanks.
Ed Miller (301) 415-2481 1
Hearing Identifier: NRR_PMDA Email Number: 1229 Mail Envelope Properties (9C2386A0C0BC584684916F7A0482B6CAF9972A3FFC)
Subject:
Draft RAI for AFW suction swap-over setpoint Sent Date: 4/9/2014 3:14:04 PM Received Date: 4/9/2014 3:14:00 PM From: Miller, Ed Created By: Ed.Miller@nrc.gov Recipients:
"'Murphy, George M (George.Murphy2@duke-energy.com)'" <George.Murphy2@duke-energy.com>
Tracking Status: None Post Office: HQCLSTR02.nrc.gov Files Size Date & Time MESSAGE 638 4/9/2014 3:14:00 PM Draft BOP RAI.docx 28552 Options Priority: Standard Return Notification: No Reply Requested: No Sensitivity: Normal Expiration Date:
Recipients Received:
DRAFT REQUEST FOR ADDITIONAL INFORMATION MCGUIRE NUCLEAR STATION, UNITS 1 AND 2 PROPOSED CHANGES TO TECHNICAL SPECIFICATION 3.3.2 IN SUPPORT OF COMPLIANCE WITH NRC ORDER EA-12-049 DOCKET NOS. 50-369 AND 50-370 By letter dated September 12, 2013, (Agencywide Documents Access and Management System (ADAMS) Accession No. ML13262A500), Duke Energy Carolinas (Duke) submitted a license amendment request (LAR) to amend the Technical Specifications (TS) 3.3.2, Engineered Safety Feature Actuation System (ESFAS) Instrumentation, FUNCTION 6.f, Auxiliary Feedwater Pump Suction Transfer on Suction Pressure - Low (c) for McGuire Nuclear Station, Units 1 and 2, in support of plant modifications required to achieve compliance with the NRC Order EA-12-049, Order Modifying Licenses with Regard to Requirements of Mitigation Strategies for Beyond-Design-Basis External Events, dated March 12, 2012. In order for the NRC staff to complete its review of the LAR, the following additional information is requested.
- 1. In the submittal, Duke stated:
The existing safety-related automatic alignment of NSW to the AFW pumps' suction is achieved by means of pressure switches which open AC-motor operated valves. The pressure switches are located on the AFW pump suction lines. The AFW MDPs utilize two pressure switches per train (one switch per isolation valve). The TDAFWP utilizes four switches per train. A low pressure signal sensed by two switches on either train will cause the assured NSW supply of water for the pump to be aligned.
The NRC staff acknowledges that a low pressure signal sensed by two switches on a train of pressure switches associated with the motor-driven auxiliary feedwater pump will open flow from the service water header to the pumps suction. However, the submittal indicated that the turbine-driven auxiliary feedwater pump has four pressure switches per train. From the description given, it appears that there are actually two trains of two switches in this logic, each train associated with a different nuclear service water header. If this is the situation, the above statement, A low pressure signal sensed by two switches on either train will cause the assured NSW supply of water for the pump to be aligned, would not be true for all cases for the turbine-driven auxiliary feedwater pump. In this case, only a select two pressure switches of the four switches will open flow from a service water header.
The NRC staff requests the licensee to clarify its description of the pressure switch logic associated with the turbine-driven auxiliary feedwater pump and make any necessary changes.
SBPB-RAI-2
- 2. The licensee is proposing different setpoints for the pressure switches on the 2A motor-driven auxiliary feedwater pumps. The Technical Specifications are combined for Unit 1 and Unit 2. Figure 1 in Attachment 4 shows some piping configurations are different for the two units, especially where the new SSS/ELAP supply of water ties into the suction piping.
The NRC staff requests confirmation that the elevation difference for the 2A motor-driven auxiliary feedwater pumps is 2-feet on both units.
