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| {{#Wiki_filter:}} | | {{#Wiki_filter:ML21019A178 From: Pinson, Brandon To: Rector, Matthew K.:(Exelon Nuclear) |
| | Cc: Arner, Frank; Rutenkroger, Scott |
| | |
| | ==Subject:== |
| | NRC Request for Information - Peach Bottom TI-2515/194 Open Phase Condition Date: Tuesday, February 2, 2021 3:28:00 PM Attachments: OPC RFI_PeachBottom2021.pdf Good Afternoon Mr. Rector, I will be the lead inspector for the upcoming TI 2515/194 (Open Phase Condition) inspection at Peach Bottom. The on-site inspection is scheduled for the week of March 22, 2021. As of right now, the plan is to perform some portions of the inspection on-site (i.e. |
| | walkdowns, simulator, etc.) while portions that can be performed remotely, will be. |
| | Additionally, Frank Arner (Senior Reactor Analyst - Region 1) will be assisting me with the inspection. |
| | Attached you will find a request for information needed in order to complete the inspection. |
| | Please note that some of the information is requested prior to the on-site week, while other information can be provided when we arrive. |
| | I will give you a call tomorrow to touch base, and discuss logistics/any questions you may have. |
| | Thanks! |
| | Brandon Pinson |
| | |
| | TI 2515/194 Inspection Documentation Request Please provide the following documentation (Items 1 - 15) to the lead inspector prior to the onsite inspection date, preferably no later than March 12, 2021. Whenever practical, please provide copies electronically. Please provide an index of the requested documents which includes a brief description of the document and the numerical heading associated with the request (i.e., where it can be found in the list of documents requested). |
| | Brandon Pinson RI/DRS/EB2 2100 Renaissance Boulevard, Suite 100 King of Prussia, PA 19406 610-337-5091 Brandon.Pinson@nrc.gov |
| | : 1. Copies of any calculations, analyses, and/or test reports performed to support the implementation of your open phase condition (OPC) solution. If, in your implementation, OPCs are not detected and alarmed in the control room please include documentation that: |
| | : a. Demonstrates the OPC will not prevent functioning of important-to-safety SSCs; AND |
| | : b. Detection of an OPC will occur within a short period of time (e.g., 24 hours). |
| | : 2. Copies of any modification packages, including 10 CFR 50.59 evaluations if performed, used for or planned for the implementation of your OPC solution. |
| | : 3. Copies of periodic maintenance, surveillance, setpoint calibration, and/or test procedures implemented or planned, for your OPC solution. |
| | : 4. Copies of your licensing basis changes to Updated Final Safety Analysis Report (UFSAR) and/or Technical Specifications (TS), or equivalent, as applicable, which discuss the design features and analyses related to the effects of, and protection for, any open phase condition design vulnerability. If these documents have not been updated, provide documentation of your plans to do so. |
| | : 5. Copies of any procurement specifications and acceptance testing documents related to the installation of your OPC solution. |
| | : 6. Copies of any site training the inspector will need to accomplish to gain access to areas with, or planned, major electrical equipment used in your OPC solution (i.e. switchyard). |
| | : 7. Provide documentation showing that with an OPC occurrence and no accident condition signal present, either: |
| | : a. An OPC does not adversely affect the function of important-to-safety SSCs, OR |
| | : b. TS LCOs are maintained or the TS actions are met without entry into TS LCO 3.0.3 AND |
| | : i. Important-to-safety equipment is not damaged by the OPC, AND ii. Shutdown safety is not compromised |
| | : 8. With OPC occurrence and an accident condition signal present: |
| | : a. Provide documentation showing that automatic detection and actuation will transfer loads required to mitigate postulated accidents to an alternate source and ensure that safety functions are preserved, as required by the current licensing bases, OR |
| | : b. Provide documentation showing that all design basis accident acceptance criteria are met with the OPC, given other plant design features. Accident assumptions must include licensing provisions associated with single failures. Typically, licensing bases will not permit consideration of the OPC as the single failure since this failure is a non-safety system. |
| | : 9. If OPC actuation circuits are required, provide documentation that demonstrates continued coordination with the other protective devices in both the offsite electrical system (within Peach Bottoms area of responsibility) and the onsite electrical systems. |
| | : 10. Copies of documentation or testing that demonstrates your OPC solution minimizes spurious actuation or mis-operation in the range of voltage imbalance normally expected in the transmission system that could cause undesired separation from an operable off-site power source. |
| | : 11. Copies of any PRA evaluations for your plant response to an open phase condition. Include Event Trees and Fault Trees developed/used as part of your analysis |
| | : 12. Copies of any HRA evaluations for your proposed or existing operator actions in procedures used to identify and mitigate open phase conditions. Ensure you include timing information for any operator actions. |
| | : 13. Summary and discussion about the plant PRA model for an OPC. Include your Human Reliability Analysis (HRA). Please discuss any sensitivity analyses performed, and the results. Also, discuss any assumptions made which bound the sensitivity analysis. |
| | : 14. If recovery is assumed as part of the basis in the PRA analysis for impacted electric equipment, then provide the following: |
| | : a. System load flow calculations, protective coordination, and failure mode and consequence analyses associated with restoration of equipment to perform the required functions. |
| | : b. Provide evaluations associated ESF/PRA credited loads which demonstrates that the ESF/PRA credited loads would not be damaged during the time delay between detection of an OPC by the control room operators and completion of the operator actions. |
| | : c. Provide an analysis/calculation of the maximum unbalance seen on ESF buses at all voltage levels and provide documents associated with existing relays that are used to protect the equipment from unbalanced power quality issues and potential consequences. |
| | : d. Provide time analysis associated with the recovery of the tripped equipment and provide recovery actions/procedures (fuse replacement, restoring large motors, restarting stalled or degraded electrical equipment). |
| | : 15. Copies of any self-assessment(s) performed in preparation for this inspection Please provide the following documentation to the inspector when onsite. Whenever practical, please provide copies electronically, except for drawings. Drawings should be provided as paper copies of sufficient size (ANSI C or D) such that all details are legible. |
| | : 16. A brief presentation describing your electric power system design and typical electrical transmission and distribution system alignments; OPC design schemes installed to detect, alarm and actuate; bus transfer schemes; and maintenance and surveillance requirements. |
| | This presentation should be a general overview of your system. Please schedule the overview shortly after the entrance meeting. |
| | : 17. Plant layout and equipment drawings for areas that identify: (a) the physical plant locations of major electrical equipment used in your open phase condition solution; (b) the locations of detection and indication equipment used in the open phase condition sensing circuits. |
| | Please set up the follow evolutions/access for the inspector when onsite: |
| | : 18. Access to locations in which open phase condition equipment is installed or planned (i.e. |
| | switchyard, relay room(s), etc.) |
| | : 19. An operator walkthrough of your OPC response procedures. Include any control room time critical operator actions (use of the simulator may be the preferred method). |
| | : 20. A discussion of the timeline and consequences of an extended duration unbalanced voltage condition and how it may affect electric equipment, if OPC is not automatically isolated. |
| | This document does not contain new or amended information collection requirements subject to the Paperwork Reduction Act of 1995 (44 U.S.C. 3501 et seq.). Existing information collection requirements were approved by the Office of Management and Budget, Control Number 31500011. The NRC may not conduct or sponsor, and a person is not required to respond to, a request for information or an information collection requirement unless the requesting document displays a currently valid Office of Management and Budget control number. |
| | This document will be made available for public inspection and copying at http://www.nrc.gov/reading-rm/adams.html and at the NRC Public document Room in accordance with 10 CFR 2.390, Public Inspections, Exemptions, Requests for Withholding.}} |
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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:Inspection Plan
MONTHYEARIR 05000277/20230052023-08-31031 August 2023 Updated Inspection Plan for Peach Bottom Atomic Power Station, Units 2 and 3 (Report 05000277/2023005 and 05000278/2023005) IR 05000277/20220062023-03-0101 March 2023 Annual Assessment Letter for Peach Bottom Atomic Power Station, Units 2 and 3 (Reports 05000277/2022006 and 05000278/2022006) ML23019A0752023-01-19019 January 2023 Information Request for Quadrennial Baseline Comprehensive Engineering Team Inspection; Notification to Perform Inspection 05000277/2023011 and 05000278/2023011 IR 05000277/20220052022-08-31031 August 2022 Updated Inspection Plan for Peach Bottom Atomic Power Station, Units 2 and 3 (Report 05000277/2022005 and 05000278/2022005) IR 05000277/20210062022-03-0202 March 2022 Annual Assessment Letter for Peach Bottom Atomic Power Station, Units 2 and 3 (Reports 05000277/2021006 and 05000278/2021006) IR 05000277/20210052021-09-0101 September 2021 Updated Inspection Plan for the Peach Bottom Atomic Power Station, Units 2 and 3 (Report 05000277/2021005 and 05000278/2021005) IR 05000277/20200062021-03-0303 March 2021 Annual Assessment Letter for Peach Bottom Atomic Power Station, Units 2 and 3 (Reports 05000277/2020006 and 05000278/2020006) ML21091A1782021-02-0202 February 2021 Ti 2515/194 Inspection Documentation Request ML20296A3342020-10-21021 October 2020 ISI Remote Inspection - Supplemental Request for Information IR 05000277/20200052020-08-31031 August 2020 Updated Inspection Plan (Inspection Reports 05000277/2020005 and 05000278/2020005) ML20119A8852020-04-28028 April 2020 Stations, Unit 3, Long-Term Steam Dryer Inspection Plan at EPU Conditions IR 05000277/20190062020-03-0303 March 2020 Annual Assessment Letter for Peach Bottom Atomic Power Station, Units 2 and 3 (Report 05000277/2019006 and 05000278/2019006) IR 05000277/20190052019-08-28028 August 2019 Updated Inspection Plan (Inspection Reports 05000277/2019005 and 05000278/2019005) ML19119A1202019-04-29029 April 2019 Long-Term Steam Dryer Inspection Plan at EPU Conditions IR 05000277/20180062019-03-0404 March 2019 Annual Assessment Letter for Peach Bottom Atomic Power Station, Units 2 and 3 (Reports 05000277/2018006 and 05000278/2018006) ML18330A0532018-11-21021 November 2018 Information Request for the Cyber-Security Inspection, Notification to Perform Inspection 05000277/2019403 and 05000278/2019403 IR 05000277/20180052018-08-28028 August 2018 Updated Inspection Plan (Inspection Report 05000277/2018005 and 05000278/2018005) IR 05000277/20170062018-02-28028 February 2018 Annual Assessment Letter for Peach Bottom Atomic Power Station Units 2 and 3 -(Report 05000277-2017006 and 05000278-2017006 Report 05000277-2017402 and 05000278-2017402 Report 05000277-2017501 and 05000278-2017501) ML17340A4112017-12-0505 December 2017 Notification of Conduct of a Triennial Fire Protection Baseline Inspection IR 05000277/20170052017-08-28028 August 2017 Updated Inspection Plan Letter 05000277/2017005 and 05000278/2017005 with Rpt. 22 IR 05000277/20160062017-03-0101 March 2017 Annual Assessment Letter Units 2 and 3 - Report Nos. 05000277/2016006 and 05000278/2016006 with Report 22 IR 05000277/20150062016-03-0202 March 2016 ROP 16 Annual Assessment Letter for Peach Bottom Atomic Power Station, Units 2 & 3 (Report 05000277/2015006 & 05000278/2015006) IR 05000277/20150052015-09-0101 September 2015 ROP-16 Mid-Cycle Assessment Letter for Peach Bottom Atomic Power Station, Units 2 and 3 (Report 05000277/2015005 and 05000278/2015005) IR 05000277/20140012015-03-0404 March 2015 ROP 15 Annual Assessment Letter for Peach Bottom Atomic Power Station (Report 05000277/2014001 and 05000278/2014001) IR 05000277/20140062014-09-0202 September 2014 ROP-15 Mid-Cycle Performance Review and Inspection Plan Report 05000277/2014006 and 05000278/2014006 IR 05000277/20130012014-03-0404 March 2014 ROP-14 2013 Peach Bottom Atomic Power Station Annual Assessment Letter, Report 05000277/2013001 and 05000278/2013001, and Inspection Plan IR 05000277/20130062013-09-0303 September 2013 ROP-14 Mid-Cycle Performance Review and Inspection Plan Report 05000277/2013006 and 05000278/2013006 IR 05000277/20120012013-03-0404 March 2013 Annual Assessment Letter for Peach Bottom Atomic Power Station Units 2 and 3 (Report 05000277/2012001 and 05000278/2012001) ML12318A0022012-11-0909 November 2012 Notification to Perform an Inspection of Temporary Instruction 2201/004, Inspection of Implementation of Interim Cyber Security Milestones 1 - 7 and Request for Information IR 05000277/20120062012-09-0404 September 2012 Mid-Cycle Performance Review and Inspection Plan 2012 - Peach Bottom Atomic Power Station (Report 05000277/2012006 and 05000278/2012006) IR 05000277/20110012012-03-0505 March 2012 Annual Assessment Letter for Peach Bottom Atomic Power Station (Report 05000277-11-001 and 05000278-11-001) ML1124113452011-09-0101 September 2011 Mid-Cycle Performance Review and Inspection Plan 2011 - Peach Bottom Atomic Power Station IR 05000277/20100012011-03-0404 March 2011 Annual Assessment Letter for Peach Bottom Atomic Power Station, EOC-11 (05000277/2010001 and 05000278/2010001) ML1024404132010-09-0101 September 2010 Mid-Cycle Assessment Letter 2010 - Peach Bottom Atomic Power Station, Units 2 and 3 ML1006210092010-03-0303 March 2010 Annual Assessment Letter - Peach Bottom Atomic Power Station (05000277-10-001 and 05000278-10-001) and Report 22 ML0924402532009-09-0101 September 2009 Mid-Cycle Performance Assessment Letter - Peach Bottom Atomic Power Station IR 05000277/20090012009-03-0404 March 2009 Annual Assessment Letter - Peach Bottom Atomic Power Station (05000277/2009001 and 05000278/2009001) ML0824704542008-09-0202 September 2008 2008 Mid-Cycle Performance Assessment Letter - Peach Bottom ML0734705752007-12-13013 December 2007 ROP - Peach Bottom - Change to Inspection Plan, 12/13/07 ML0724306242007-08-31031 August 2007 Mid-Cycle Performance Review and Inspection Plan, for 07/01/2007 - 12/31/2008 ML0706106152007-03-0202 March 2007 Annual Assessment Letter EOC 2006 - Peach Bottom Station (05-277-07-001 and 05-278-07-001) ML0624305232006-08-31031 August 2006 Mid-Cycle Performance Review and Inspection Plan - Peach Bottom Atomic Power Station IR 05000277/20060012006-03-0202 March 2006 2006-001 - Annual Assessment Letter - Peach Bottom Atomic Power Station (Report 05000277/2006001 and 05000278/2006001) ML0524207012005-08-30030 August 2005 Mid-Cycle Performance Review and Inspection Plan - Peach Bottom Atomic Power Station ML0506107082005-03-0202 March 2005 Annual Assessment Letter 2005001-Peach Bottom ML0424404642004-08-30030 August 2004 2004 Peach Bottom Mid-Cycle Performance Review and Inspection Plan ML0406305452004-03-0303 March 2004 2003-04 Annual Assessment Letter - Peach Bottom IR 05000277/20030012003-03-0303 March 2003 2003 Annual Assessment Letter - Peach Bottom Atomic Power Station (Report 50-277/03-001, 50-278/03-001) IR 05000277/20020012002-03-0101 March 2002 2002 Annual Assessment Letter - Peach Bottom Atomic Power Station (Report 50-277/02-01, 50-278/02-01 2023-08-31
[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
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ML21019A178 From: Pinson, Brandon To: Rector, Matthew K.:(Exelon Nuclear)
Cc: Arner, Frank; Rutenkroger, Scott
Subject:
NRC Request for Information - Peach Bottom TI-2515/194 Open Phase Condition Date: Tuesday, February 2, 2021 3:28:00 PM Attachments: OPC RFI_PeachBottom2021.pdf Good Afternoon Mr. Rector, I will be the lead inspector for the upcoming TI 2515/194 (Open Phase Condition) inspection at Peach Bottom. The on-site inspection is scheduled for the week of March 22, 2021. As of right now, the plan is to perform some portions of the inspection on-site (i.e.
walkdowns, simulator, etc.) while portions that can be performed remotely, will be.
Additionally, Frank Arner (Senior Reactor Analyst - Region 1) will be assisting me with the inspection.
Attached you will find a request for information needed in order to complete the inspection.
Please note that some of the information is requested prior to the on-site week, while other information can be provided when we arrive.
I will give you a call tomorrow to touch base, and discuss logistics/any questions you may have.
Thanks!
Brandon Pinson
TI 2515/194 Inspection Documentation Request Please provide the following documentation (Items 1 - 15) to the lead inspector prior to the onsite inspection date, preferably no later than March 12, 2021. Whenever practical, please provide copies electronically. Please provide an index of the requested documents which includes a brief description of the document and the numerical heading associated with the request (i.e., where it can be found in the list of documents requested).
Brandon Pinson RI/DRS/EB2 2100 Renaissance Boulevard, Suite 100 King of Prussia, PA 19406 610-337-5091 Brandon.Pinson@nrc.gov
- 1. Copies of any calculations, analyses, and/or test reports performed to support the implementation of your open phase condition (OPC) solution. If, in your implementation, OPCs are not detected and alarmed in the control room please include documentation that:
- a. Demonstrates the OPC will not prevent functioning of important-to-safety SSCs; AND
- b. Detection of an OPC will occur within a short period of time (e.g., 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />).
- 2. Copies of any modification packages, including 10 CFR 50.59 evaluations if performed, used for or planned for the implementation of your OPC solution.
- 3. Copies of periodic maintenance, surveillance, setpoint calibration, and/or test procedures implemented or planned, for your OPC solution.
- 4. Copies of your licensing basis changes to Updated Final Safety Analysis Report (UFSAR) and/or Technical Specifications (TS), or equivalent, as applicable, which discuss the design features and analyses related to the effects of, and protection for, any open phase condition design vulnerability. If these documents have not been updated, provide documentation of your plans to do so.
- 5. Copies of any procurement specifications and acceptance testing documents related to the installation of your OPC solution.
- 6. Copies of any site training the inspector will need to accomplish to gain access to areas with, or planned, major electrical equipment used in your OPC solution (i.e. switchyard).
- 7. Provide documentation showing that with an OPC occurrence and no accident condition signal present, either:
- a. An OPC does not adversely affect the function of important-to-safety SSCs, OR
- b. TS LCOs are maintained or the TS actions are met without entry into TS LCO 3.0.3 AND
- i. Important-to-safety equipment is not damaged by the OPC, AND ii. Shutdown safety is not compromised
- 8. With OPC occurrence and an accident condition signal present:
- a. Provide documentation showing that automatic detection and actuation will transfer loads required to mitigate postulated accidents to an alternate source and ensure that safety functions are preserved, as required by the current licensing bases, OR
- b. Provide documentation showing that all design basis accident acceptance criteria are met with the OPC, given other plant design features. Accident assumptions must include licensing provisions associated with single failures. Typically, licensing bases will not permit consideration of the OPC as the single failure since this failure is a non-safety system.
- 9. If OPC actuation circuits are required, provide documentation that demonstrates continued coordination with the other protective devices in both the offsite electrical system (within Peach Bottoms area of responsibility) and the onsite electrical systems.
- 10. Copies of documentation or testing that demonstrates your OPC solution minimizes spurious actuation or mis-operation in the range of voltage imbalance normally expected in the transmission system that could cause undesired separation from an operable off-site power source.
- 11. Copies of any PRA evaluations for your plant response to an open phase condition. Include Event Trees and Fault Trees developed/used as part of your analysis
- 12. Copies of any HRA evaluations for your proposed or existing operator actions in procedures used to identify and mitigate open phase conditions. Ensure you include timing information for any operator actions.
- 13. Summary and discussion about the plant PRA model for an OPC. Include your Human Reliability Analysis (HRA). Please discuss any sensitivity analyses performed, and the results. Also, discuss any assumptions made which bound the sensitivity analysis.
- 14. If recovery is assumed as part of the basis in the PRA analysis for impacted electric equipment, then provide the following:
- a. System load flow calculations, protective coordination, and failure mode and consequence analyses associated with restoration of equipment to perform the required functions.
- b. Provide evaluations associated ESF/PRA credited loads which demonstrates that the ESF/PRA credited loads would not be damaged during the time delay between detection of an OPC by the control room operators and completion of the operator actions.
- c. Provide an analysis/calculation of the maximum unbalance seen on ESF buses at all voltage levels and provide documents associated with existing relays that are used to protect the equipment from unbalanced power quality issues and potential consequences.
- d. Provide time analysis associated with the recovery of the tripped equipment and provide recovery actions/procedures (fuse replacement, restoring large motors, restarting stalled or degraded electrical equipment).
- 15. Copies of any self-assessment(s) performed in preparation for this inspection Please provide the following documentation to the inspector when onsite. Whenever practical, please provide copies electronically, except for drawings. Drawings should be provided as paper copies of sufficient size (ANSI C or D) such that all details are legible.
- 16. A brief presentation describing your electric power system design and typical electrical transmission and distribution system alignments; OPC design schemes installed to detect, alarm and actuate; bus transfer schemes; and maintenance and surveillance requirements.
This presentation should be a general overview of your system. Please schedule the overview shortly after the entrance meeting.
- 17. Plant layout and equipment drawings for areas that identify: (a) the physical plant locations of major electrical equipment used in your open phase condition solution; (b) the locations of detection and indication equipment used in the open phase condition sensing circuits.
Please set up the follow evolutions/access for the inspector when onsite:
- 18. Access to locations in which open phase condition equipment is installed or planned (i.e.
switchyard, relay room(s), etc.)
- 19. An operator walkthrough of your OPC response procedures. Include any control room time critical operator actions (use of the simulator may be the preferred method).
- 20. A discussion of the timeline and consequences of an extended duration unbalanced voltage condition and how it may affect electric equipment, if OPC is not automatically isolated.
This document does not contain new or amended information collection requirements subject to the Paperwork Reduction Act of 1995 (44 U.S.C. 3501 et seq.). Existing information collection requirements were approved by the Office of Management and Budget, Control Number 31500011. The NRC may not conduct or sponsor, and a person is not required to respond to, a request for information or an information collection requirement unless the requesting document displays a currently valid Office of Management and Budget control number.
This document will be made available for public inspection and copying at http://www.nrc.gov/reading-rm/adams.html and at the NRC Public document Room in accordance with 10 CFR 2.390, Public Inspections, Exemptions, Requests for Withholding.