Letter Sequence RAI |
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EPID:L-2018-LLA-0265, License Amendment Request to Reduce High Pressure Service Water System Design Pressure and Revise Technical Specifications 3.6.2.3, 3.6.2.4, 3.6.2.5, and 3.7.1 for Temporary Extension of ... (Approved, Closed) |
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MONTHYEARML18275A0232018-09-28028 September 2018 License Amendment Request to Reduce High Pressure Service Water System Design Pressure and Revise Technical Specifications 3.6.2.3, 3.6.2.4, 3.6.2.5, and 3.7.1 for Temporary Extension of ... Project stage: Request ML18295A2602018-10-22022 October 2018 Acceptance Review for Peach Bottom - License Amendment Request for TS Changes Related to HPSW System Project stage: Acceptance Review ML19017A0472019-01-16016 January 2019 Request for Additional Information - High Pressure Service Water One Time TS Change Project stage: RAI ML19046A1292019-02-15015 February 2019 Response to RAI - License Amendment Request to Reduce High Pressure Service Water System Design Pressure and Revise Technical Specifications 3.6.2.3, 3.6.2.4, 3.6.2.5, and 3.7.1 for Temporary Extension of Completion Times Project stage: Response to RAI ML19058A2902019-02-27027 February 2019 Request for Additional Information - High Pressure Service Water One Time TS Change Project stage: RAI ML19085A3852019-03-26026 March 2019 Response to Second Request for Additional Information - License Amendment Request to Reduce High Pressure Service Water System Design Pressure and Revise Technical Specifications ... Project stage: Request ML19232A1752019-08-20020 August 2019 Request for Additional Information - TSTF-500 Implementation LAR Project stage: RAI ML19182A0062019-08-28028 August 2019 Issuance of Amendment Nos. 327 and 330 Reduce High Pressure Service Water System Design Pressure and Temporarily Extend Completion Times Project stage: Approval ML19241A4652019-08-29029 August 2019 Response to Request for Additional Information (RAl-1) License Amendment Request to Revise Technical Specifications 3.8.4, DC Sources-Operating Project stage: Response to RAI 2019-02-27
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Category:E-Mail
MONTHYEARML24002A7132023-12-29029 December 2023 Supplement - Peach Bottom Security Rule Exemption Request ISFSI Docket No. Reference (EPID L-2023-LLE-0032) (Updated) (Email) ML23352A3242023-12-18018 December 2023 Acceptance of Requested Licensing Action Request for Alternative Schedule to Complete Decommissioning Beyond 60 Years of Permanent Cessation of Operations (EPID L- 2023-LLN-0004) ML23331A9112023-11-22022 November 2023 Supplement - Peach Bottom Security Rule Exemption Request ISFSI Docket No. Reference ML23304A0182023-10-30030 October 2023 NRR E-mail Capture - Final RCI - Constellation Energy Generation, LLC - Peach Bottom 2 & 3 - Exemption from Security Rule (L-2023-LLE-0032) ML23264A7992023-09-21021 September 2023 NRR E-mail Capture - Final RAI - Constellation Energy Generation, LLC Fleet Request License Amendment Request to Adopt TSTF-580, Revision 1 ML23237B3972023-08-24024 August 2023 NRR E-mail Capture - Constellation Energy Generation, LLC - Fleet Request - Acceptance of Alternative Request to Use Updated BWRVIP Guidelines ML23163A2292023-06-12012 June 2023 NRR E-mail Capture - Constellation Energy Generation, LLC - Fleet Request - Acceptance of License Amendment Request to Adopt TSTF-580, Revision 1 ML22354A2622022-12-20020 December 2022 NRR E-mail Capture - Constellation Energy Generation, LLC - Fleet Request - Acceptance of Request to Use Certain Provisions of the 2019 Edition of the ASME BPV Code, Section XI ML22325A0052022-11-18018 November 2022 NRR E-mail Capture - Constellation Energy Generation, LLC - Fleet Request - Acceptance of License Amendment Request to Adopt TSTF-273-A, Revision 2 ML22200A0782022-07-19019 July 2022 NRR E-mail Capture - Constellation Energy Generation, LLC - Fleet Request to Use Honeywell Mururoa V4F1 R Supplied Air Suits ML22118A3312022-04-28028 April 2022 NRR E-mail Capture - Peach Bottom - Formal RAI for Proposed Alternative I5R-14, Revision 1 ML22041B5362022-02-10010 February 2022 NRR E-mail Capture - Constellation Energy Generation, LLC - Request for Additional Information Regarding Fleet License Amendment Request to Adopt TSTF-541 ML22024A1852022-01-24024 January 2022 Acceptance for Review of Relief Request Associated with Reactor Pressure Vessel N-16A Nozzle Repair ML22020A0642022-01-13013 January 2022 NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding Proposed Fleet Alternative for Repair of Water Level Instrumentation Partial Penetration Nozzles ML21301A0672021-10-28028 October 2021 NRR E-mail Capture - Exelon Generation Company, LLC - Acceptance of License Amendment Request to Adopt TSTF-541 ML21256A1902021-09-10010 September 2021 NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding License Transfer Application ML21252A0482021-09-0707 September 2021 NRR E-mail Capture - Exelon Generation Company, LLC - Fleet Alternative Request for Repair of Water Level Instrumentation Partial Penetration Nozzles ML21215A3502021-08-0303 August 2021 NRR E-mail Capture - Exelon Generation Company, LLC - Acceptance of License Amendment Request to Adopt TSTF-554 ML21154A0142021-05-28028 May 2021 NRR E-mail Capture - Extension of Comment Period for the Exelon Generation Company, LLC License Transfer Application ML21154A0132021-05-28028 May 2021 NRR E-mail Capture - Extension of Comment Period for the Exelon Generation Company, LLC License Transfer Application ML21154A0112021-05-28028 May 2021 NRR E-mail Capture - Extension of Comment Period for the Exelon Generation Company, LLC License Transfer Application ML21144A2132021-05-24024 May 2021 NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding License Transfer Application ML21134A0152021-05-14014 May 2021 Acceptance Ventilation Filter Testing LAR ML21117A0442021-04-26026 April 2021 NRR E-mail Capture - Exelon Generation Company, LLC - Proposed Fleet Alternative to Documentation Requirements for Pressure Retaining Bolting ML21084A2532021-03-24024 March 2021 NRR E-mail Capture - Exelon Generation Company, LLC - Acceptance of License Transfer Application ML21062A0652021-03-0101 March 2021 NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding Proposed Fleet Alternative to Documentation Requirements for Pressure Retaining Bolting ML21049A2572021-02-18018 February 2021 Request for Additional Information Byron/Dresden Proposed Changes to Site Emergency Plans to Support Post-Shutdown and Permanently Defueled Conditions (EPID-2020-LLA-0240 & EPID-2020-LLA-0237) ML21091A1782021-02-0202 February 2021 Ti 2515/194 Inspection Documentation Request ML21033A8552021-02-0202 February 2021 NRR E-mail Capture - Exelon Generation Company, LLC - Fleet Alternative Request to Expand the Use ASME Codes Cases N-878 and N-880 ML21012A1302021-01-12012 January 2021 Request for Additional Information - TSTF-505 ML20357A0972020-12-21021 December 2020 Request for Additional Information - TSTF-505 ML20350B5582020-12-14014 December 2020 NRR E-mail Capture - Exelon Generation Company, LLC -Alternative Request for Documentation of Replacement of Pressure Retaining Bolting ML20343A3492020-12-0707 December 2020 Acceptance of Requested Licensing Action: Peach Bottom Relief Request for N-16 Nozzle ML20324A6472020-11-19019 November 2020 Acceptance of Requested Licensing Action: Peach Bottom One-time Exemption App. B Sect. VI.C.3.(I)(1) Force on Force (COVID-19) ML20314A0282020-11-0606 November 2020 Verbal Relief for Penetration Nozzle ML20283A7722020-10-0909 October 2020 Submittal of Pennsylvania Letter Requesting Exemption from Biennial Exercise Requirements for Pennsylvania Nuclear Power Plants in Calendar Year 2020 ML20276A0762020-10-0202 October 2020 Acceptance of Requested Licensing Action, One-Time Acceptance for Review - Peach Bottom of Exemption from 10 CFR 50, Appendix E, Biennial Emergency Preparedness Exercise Requirements Due to COVID-19 Pandemic ML20266G3032020-09-22022 September 2020 NRR E-mail Capture - Exelon Generation Company, LLC - Fleet Request to Use Paragraph IWA-5120 of the 2017 Edition of the ASME B&PV Code, Section XI ML20239A7982020-08-25025 August 2020 NRR E-mail Capture - Exelon Generation Company, LLC - Fleet License Amendment Request to Adopt TSTF-568, Revision 2 ML20217L3462020-08-0404 August 2020 Audit Plan Regarding License Amendment Request to Implement Riskinformed Extended Completion Times (L-2020-LLA-0120) ML20191A0182020-07-0101 July 2020 NRR E-mail Capture - Exelon Fleet RR for SPI for Appendix J Valves ML20178A1392020-06-26026 June 2020 Acceptance Review for Peach Bottom - License Amendment Request for TSTF-505 ML20153A7042020-06-0101 June 2020 NRR E-mail Capture - Preliminary RAI for Fleet Request to Use Alternative OMN-26 ML20149K4312020-05-22022 May 2020 NRR E-mail Capture - Exelon Generation Company, LLC - Acceptance of License Amendment Request to Adopt TSTF-566 ML20135H1972020-05-14014 May 2020 NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding Request to Extend Safety Relief Valve Test Interval ML20122A2302020-05-0101 May 2020 NRR E-mail Capture - Exelon Generation Company, LLC - Acceptance of Fleet License Amendment Request to Adopt TSTF-566 ML20077F6112020-03-16016 March 2020 E-mail: the U.S. Nuclear Regulatory Commission'S Record of Decision Regarding Exelon'S Subsequent License Renewal Application for Peach Bottom Atomic Power Station Units 2 and 3 ML20070R2282020-03-10010 March 2020 Request for Additional Information - RR ML20063G1362020-02-27027 February 2020 NRR E-mail Capture - Exelon Generation Company, LLC -Acceptance of Proposed Alternative to Extend Safety Relief Valve Test Frequency (EPIDs L-2020-LLR-0014 Through L-2020-LLR-0018) ML20057E5562020-02-26026 February 2020 Availability of the Final Supplemental Environmental Impact Statement for Subsequent License Renewal of Peach Bottom Atomic Power Station, Units 2 and 3 2023-09-21
[Table view] Category:Request for Additional Information (RAI)
MONTHYEARIR 05000277/20244012023-10-0505 October 2023 Information Request for the Cybersecurity Baseline Inspection, Notification to Perform Inspection 05000277/2024401 and 05000278/2024401 ML23264A7992023-09-21021 September 2023 NRR E-mail Capture - Final RAI - Constellation Energy Generation, LLC Fleet Request License Amendment Request to Adopt TSTF-580, Revision 1 ML22118A3312022-04-28028 April 2022 NRR E-mail Capture - Peach Bottom - Formal RAI for Proposed Alternative I5R-14, Revision 1 ML22041B5362022-02-10010 February 2022 NRR E-mail Capture - Constellation Energy Generation, LLC - Request for Additional Information Regarding Fleet License Amendment Request to Adopt TSTF-541 ML22021A5692022-01-21021 January 2022 Information Request for the Cyber Security Baseline Inspection, Notification to Perform Inspection 05000277/2022403 and 05000278/2022403 ML22020A0642022-01-13013 January 2022 NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding Proposed Fleet Alternative for Repair of Water Level Instrumentation Partial Penetration Nozzles ML21256A1902021-09-10010 September 2021 NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding License Transfer Application ML21144A2132021-05-24024 May 2021 NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding License Transfer Application ML21062A0652021-03-0101 March 2021 NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding Proposed Fleet Alternative to Documentation Requirements for Pressure Retaining Bolting ML21049A2572021-02-18018 February 2021 Request for Additional Information Byron/Dresden Proposed Changes to Site Emergency Plans to Support Post-Shutdown and Permanently Defueled Conditions (EPID-2020-LLA-0240 & EPID-2020-LLA-0237) ML21035A2222021-02-0404 February 2021 Notification of Conduct of a Fire Protection Team Inspection ML21091A1782021-02-0202 February 2021 Ti 2515/194 Inspection Documentation Request ML21012A1302021-01-12012 January 2021 Request for Additional Information - TSTF-505 ML20357A0972020-12-21021 December 2020 Request for Additional Information - TSTF-505 ML20296A3342020-10-21021 October 2020 ISI Remote Inspection - Supplemental Request for Information ML20239A7982020-08-25025 August 2020 NRR E-mail Capture - Exelon Generation Company, LLC - Fleet License Amendment Request to Adopt TSTF-568, Revision 2 ML20153A7042020-06-0101 June 2020 NRR E-mail Capture - Preliminary RAI for Fleet Request to Use Alternative OMN-26 ML20135H1972020-05-14014 May 2020 NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding Request to Extend Safety Relief Valve Test Interval ML20070R2282020-03-10010 March 2020 Request for Additional Information - RR ML19303D1662019-10-31031 October 2019 Requests for Additional Information for the Environmental Review of the Peach Bottom Subsequent License Renewal Application - Set 2 (EPID No. L-2018-RNW-0013)- RAIs ML19232A1752019-08-20020 August 2019 Request for Additional Information - TSTF-500 Implementation LAR ML19140A2832019-05-15015 May 2019 Email - Peach Bottom Atomic Power Station, Units 2 and 3 Second Round RAI Request - Set 1 ML19140A2822019-05-15015 May 2019 027 Pb FU RAI Subsequent to Clarification Call - Cu Greater than 15 Zn Holston (Jg) ML19253D2932019-05-0707 May 2019 002 Attachment 4D Confirmation Water Chemistry Chereskin Revised (002) ML19249C7252019-05-0303 May 2019 SLRA Requests for Additional Information - Set 2 May 3, 2019 ML19108A4282019-04-10010 April 2019 RAIs SLRA Set 1_ERO(Rev 1) ML19079A0232019-03-19019 March 2019 Licensed Operator Positive Fitness-For-Duty Test ML19058A2902019-02-27027 February 2019 Request for Additional Information - High Pressure Service Water One Time TS Change ML19037A4832019-02-0606 February 2019 NRR E-mail Capture - Clarification Questions Associated with Staff Assessment of Peach Bottom Seismic Probabilistic Risk Assessment Report Dated August 28, 2018 ML19028A0062019-01-25025 January 2019 Secondary Containment LAR Requests for Additional Information ML19017A0472019-01-16016 January 2019 Request for Additional Information - High Pressure Service Water One Time TS Change ML18348B0292018-12-13013 December 2018 Subsequent License Renewal Severe Accident Mitigation Alternatives Requests for Additional Information ML19010A3832018-12-0707 December 2018 Additional Documents Needed for Peach Bottom SLR Environmental Review ML18324A6742018-11-15015 November 2018 Request for Additional Information (FINAL)- LAR to Allow 2SRV/SVs OOS at High Pressure ML18312A4072018-11-0808 November 2018 Request for Additional Information (Public) - LAR to Allow 2SRV/SVs OOS at High Pressure ML18276A0202018-10-0202 October 2018 NRR E-mail Capture - Exelon Generation Company, LLC - Request for Additional Information Regarding License Amendment Request to Revise Emergency Plan for Limerick and Peach Bottom ML18240A1742018-08-28028 August 2018 Request for Additional Information (Final) - Adopt TSTF-500 Battery TS Changes LAR ML18239A1322018-08-27027 August 2018 Request for Additional Information Final - Relief Request I5R-04 ML18228A6762018-08-14014 August 2018 Request for Additional Information - Adopt TSTF-500 Battery TS Changes LAR ML18226A2012018-08-14014 August 2018 Request for Additional Information - Relief Request I5R-05 ML18214A2812018-08-0202 August 2018 Request for Additional Information Draft - Relief Request I5R-02 ML18200A2742018-07-17017 July 2018 Request for Additional Information 2nd Round (Final) - Adopt 50.69 License Amendment ML18192A1192018-07-10010 July 2018 Request for Additional Information 2nd Round (Final) - Adopt 50.69 License Amendment ML18178A4772018-06-27027 June 2018 Request for Additional Information 2nd Round - Adopt 50.69 License Amendment ML18096B5062018-04-0606 April 2018 Request for Additional Information Exelon Generation Company, LLC Requested Amendment to Adopt 10 CFR 50.69 for Risk-informed Categorization and Treatment of Structures, Systems and Components ML18094B0832018-04-0505 April 2018 Enclosurequest for Additional Information (Letter to P. Duke RAI Regarding Entergy Operations, Inc.'S Decommissioning Funding Plan Update for Salem and Hope Creek, and Peach Bottom ISFSIs Docket Nos. 72-48 and 72-29) ML18067A1482018-03-0808 March 2018 Enclosurequest for Additional Information (Letter to P. R. Simpson Request for Additional Information Regarding Exelon Generating Company, Llc'S Decommissioning Funding Plan Update for Independent Spent Fuel Storage Installation) ML17317B5502017-11-0909 November 2017 Licensed Operator Positive Fitness-For-Duty Test ML17240A0062017-08-24024 August 2017 Request for Additional Information Regarding License Amendment Request for Measurement Uncertainty Recapture Power Uprate ML17222A0962017-08-10010 August 2017 Request for Additional Information - Amendment Request Regarding Safety Relief Valve and Safety Valce Operability for Cycle 22 2023-09-21
[Table view] |
Text
From: Tobin, Jennifer To: "Helker, David P:(GenCo-Nuc)"
Cc: Gropp Jr, Richard W:(GenCo-Nuc)
Subject:
Peach Bottom Units 2 and 3 - Request for Additional Information - High Pressure Service Water One Time TS Change (EPID L-2018-LLA-0265)
Date: Wednesday, February 27, 2019 11:51:00 AM
Dear Mr. Helker,
By letter dated September 28, 2018 (ADAMS Accession No. ML18275A023), Exelon Generation Company, LLC requested to change technical specifications for Peach Bottom Atomic Power Station Units 2 and 3. The proposed change would revise the design and licensing basis described in the final safety analysis report (as updated) to reduce the design pressure rating of the high pressure service water system.
The Nuclear Regulatory Commissions (NRC) staff is reviewing your submittal and has determined that additional information is needed to complete its review. The specific request for additional information (RAI) questions are provided below. These questions are being sent to ensure that the questions are understandable, the regulatory basis for the questions is clear, and to determine if the information was previously docketed. A clarification phone call was held February 27, 2019. Minor edits were made to the RAIs as a result of the call to correct typographical errors. A response to these RAIs is due within 30 days (by March 27, 2019).
Note: two RAIs had already been issued by NRC on January 16, 2019 (ADAMS Accession No. ML19017A047) and responded to on February 15, 2019 (ADAMS Accession No. ML19046A129) so the RAI numbering for these questions begin at #3.
If you have any questions, please contact me at (301) 415-2328. A copy of the RAIs will be made publicly available in ADAMS.
- Thanks, Jenny Jenny Tobin Project Manager NRR/DORL/LPL-1 Office O9-C12 Phone 301-415-2328 REQUEST FOR ADDITIONAL INFORMATION LICENSE AMENDMENT REQUEST PROPOSED REDUCTION IN DESIGN PRESSURE FOR HIGH PRESSURE SERVICE WATER SYSTEM EXELON GENERATION COMPANY PEACH BOTTOM ATOMIC POWER STATION UNITS 2 AND 3 DOCKET NO. 50-277 AND 50-278 EPID: L-2018-LLA-0265 By letter dated September 28, 2018 (Agencywide Documents and Access Management System (ADAMS) Accession No. ML18275A023), Exelon requested a license amendment to reduce the design pressure rating of the High Pressure Service Water (HPSW) system at
Peach Bottom Atomic Power Station Units 2 and 3. The proposed change will provide additional corrosion margin in the HPSW pipe wall thickness, increasing the margin of safety. The proposed request will also temporarily revise the plant Technical Specifications (TS) Sections 3.6.2.3, "Residual Heat Removal (RHR) Suppression Pool Cooling," TS 3.6.2.4, "Residual Heat Removal (RHR) Suppression Pool Spray," TS 3.6.2.5, "Residual Heat Removal (RHR) Drywall Spray," and TS 3.7.1, "High Pressure Service Water (HPSW)
System."
To complete its review, the Nuclear Regulatory Commission (NRC) staff requests the following additional information.
RAI 3
Issue: In Section 2.2 of the license amendment request, last paragraph, the licensee stated that "...The proposed reduction in design pressure will provide for additional corrosion margin in pipe wall thickness, increasing the margin of safety for the existing piping" It is not evident that the submittal included the corrosion margin calculations, pipe diameter and wall thickness.
Request: Provide the following: (1) Pipe nominal pipe size (NPS), (2) Pipe nominal wall thickness, (3) the corrosion margin (allowance) after proposed modification, (4) the existing corrosion margin (allowance) with the current pressure inside the pipe, and (5) corrosion calculations and associated references.
RAI 4
Issue: In Section 2.2 of the license amendment request, first paragraph, the licensee stated that "[the system pressure] will be reduced from the current rating of 450 psig to a design pressure rating of approximately 200 psig. The final value is expected to fall between 190 psig and 230 psig in the detailed design with final vendor inputs" In Section 3.1, page 3, fourth paragraph, the licensee stated, " At maximum expected RHR system pressures, a pressure of 233 psig at the HPSW pump discharge is required to ensure HPSW side pressure exceeds RHR system pressure at the RHR heat exchanger" In Attachment 4, Peach Bottom UFSAR, Table 10.7.1, page 33 of the pdf file, the proposed pump shut off head is changed to 240 psig.
As shown above, the licensee mentioned various pressures--190, 200, 230, 233, and 240 psig. It is not clear the exact design pressure and maximum operating pressure in HPSW piping after modification. The NRC staff notes that there should be only one design pressure value, not a range of design pressure.
Request: (1) Provide the exact design pressure and maximum operating pressure in the HPSW piping system after the proposed modification. (2) Discuss the pressure that is used to calculate the corrosion margin.
RAI 5
Issue: In Attachment 5, page 6, of the license amendment request, the licensee discussed the replacement of existing valves and orifices. However, it is not evident that the licensee
discussed an examination that will be performed prior to installation/replacement to determine the condition of the HPSW piping.
Request: Discuss if inspections will be performed on the HPSW piping prior to hardware modifications to determine the general condition of the piping. If not, discuss whether the existing piping condition would support the replacement activities.
RAI 6
Issue: In the license amendment request, it is not evident that the licensee discussed (1) the examinations to accept the modification/installation, (2) the pressure test to demonstrate any potential leakage, and (3) functionality test to demonstrate the modified HPSW system will perform its intended function.
Request: (1) Discuss the acceptance examination that will be performed immediately after the hardware modification to demonstrate the structural integrity and leak tightness of the modified HPSW piping. If leakage occurs, discuss the acceptance criteria and how the leakage will be dispositioned. (2) Discuss whether the hardware modification will be performed based on the provisions of article IWA-4000 of the ASME Code,Section XI. If not, discuss the industry guidance that will be used as part of the hardware modifications.
(3) Discuss if a system leakage test will be performed in accordance with the ASME Code,Section XI, IWA-5000 and IWD-5000. If yes, discuss what would be the pressure used for the system leakage test. If a system leakage test will not be performed, provide justification.
(4) Discuss whether a functionality or operability test will be performed to demonstrate that the proposed pressure reduction will achieve the intended function of the HPSW system.
RAI 7
Issue The NRC staff finds that with the proposed pressure reduction, the pipe stresses will be different from the original design basis for the HPSW piping. The license amendment request did not appear to discuss the reanalysis of the existing pipe stress analysis of HPSW piping based on the original construction Code, USAS B31.1-1967 edition, as a result of proposed pressure reduction in HPSW piping.
Request Because of the proposed pressure reduction, discuss if a reanalysis is needed to evaluate pipe stresses for the HPSW piping in accordance with the original construction code, USAS B31.1-1967 edition.