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| | number = ML13221A064 | | | number = ML13221A064 |
| | issue date = 08/15/2013 | | | issue date = 08/15/2013 |
| | title = Peach Bottom Atomic Power Station, Units 2 and 3 - Request for Additional Information Regarding License Amendment Request for Extended Power Uprate (TAC Nos. ME9631 and ME9632) | | | title = Request for Additional Information Regarding License Amendment Request for Extended Power Uprate |
| | author name = Ennis R B | | | author name = Ennis R |
| | author affiliation = NRC/NRR/DORL/LPLI-2 | | | author affiliation = NRC/NRR/DORL/LPLI-2 |
| | addressee name = Pacilio M J | | | addressee name = Pacilio M |
| | addressee affiliation = Exelon Generation Co, LLC | | | addressee affiliation = Exelon Generation Co, LLC |
| | docket = 05000277, 05000278 | | | docket = 05000277, 05000278 |
| | license number = | | | license number = |
| | contact person = Ennis R B | | | contact person = Ennis R |
| | case reference number = TAC ME9631, TAC ME9632 | | | case reference number = TAC ME9631, TAC ME9632 |
| | document type = Letter, Request for Additional Information (RAI) | | | document type = Letter, Request for Additional Information (RAI) |
| | page count = 5 | | | page count = 5 |
| | | project = TAC:ME9631, TAC:ME9632 |
| | | stage = RAI |
| }} | | }} |
| | |
| | =Text= |
| | {{#Wiki_filter:UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 August 15, 2013 Mr. Michael J. Pacilio President and Chief Nuclear Officer Exelon Generation Company, LLC 4300 Winfield Road Warrenville, I L 60555 |
| | |
| | ==SUBJECT:== |
| | PEACH BOTTOM ATOMIC POWER STATION, UNITS 2 AND 3 - REQUEST FOR ADDITIONAL INFORMATION REGARDING LICENSE AMENDMENT REQUEST FOR EXTENDED POWER UPRATE (TAC NOS. ME9631 AND ME9632) |
| | |
| | ==Dear Mr. Pacilio:== |
| | |
| | By letter dated September 28,2012, as supplemented by letters dated February 15, 2013, May 7,2013, May 24,2013, June 4,2013, June 27,2013, July 30,2013, July 31,2013, and August 5, 2013, (Agencywide Documents Access and Management System (ADAMS) |
| | Accession Nos. ML122860201, ML13051A032, ML13129A143, ML13149A145, ML13156A368, ML13182A025, ML13211A457, ML13213A285, and ML13217A431, respectively), Exelon Generation Company, LLC (Exelon, the licensee) submitted a license amendment request for Peach Bottom Atomic Power Station, Units 2 and 3. The proposed amendment would authorize an increase in the maximum power level from 3514 megawatts thermal (MWt) to 3951 MWt. |
| | The requested change, referred to as an extended power uprate, represents an increase of approximately 12.4 percent above the current licensed thermal power level. |
| | The Nuclear Regulatory Commission (NRC) staff is reviewing your submittal and has determined that additional information is needed to complete its review. The specific questions are found in the enclosed request for additional information (RAI). The RAI questions were provided in draft form to Mr. Kevin Borton of your staff via e-mail on July 18, 2013. The draft questions were sent to ensure that the questions were understandable, the regulatory basis for the questions was clear, and to determine if the information was previously docketed. |
| | A conference call between the NRC staff and the Exelon staff was held on August 8, 2013, to discuss the questions. During the call, Mr. Borton stated that Exelon would provide a response to the RAI questions within 30 days of the date of this letter. |
| | Please note that if you do not respond to this letter by the agreed-upon date or provide an acceptable alternate date in writing, we may reject your application for amendment under the provisions of Title 10 of the Code of Federal Regulations, Section 2.108. |
| | |
| | M. Pacilio - 2 If you have any questions, please contact me at (301) 415-1420. |
| | Richard B. Ennis, Senior Project Manager Plant Licensing Branch 1-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-277 and 50-278 |
| | |
| | ==Enclosure:== |
| | |
| | Request for Additional Information cc w/encl: Distribution via ListServ |
| | |
| | REQUEST FOR ADDITIONAL INFORMATION REGARDING PROPOSED LICENSE AMENDMENT EXTENDED POWER UPRATE EXELON GENERATION COMPANY, LLC PEACH BOTTOM ATOMIC POWER STATION, UNITS 2 AND 3 DOCKET NOS. 50-277 AND 50-278 By letter dated September 28, 2012, as supplemented by letters dated February 15, 2013, May 7,2013, May 24,2013, June 4,2013, June 27, 2013, July 30,2013, July 31,2013, and August 5,2013, (Agencywide Documents Access and Management System (ADAMS) |
| | Accession Nos. ML122860201, ML13051A032, ML13129A143, ML13149A145, ML13156A368, ML13182A025, ML13211A457, ML13213A285, and ML13217A431, respectively), Exelon Generation Company, LLC (Exelon, the licensee) submitted a license amendment request for Peach Bottom Atomic Power Station (PBAPS), Units 2 and 3. The proposed amendment would authorize an increase in the maximum power level from 3514 megawatts thermal (MWt) to 3951 MWt. The requested change, referred to as an extended power uprate (EPU), represents an increase of approximately 12.4 percent above the current licensed thermal power level. |
| | The Nuclear Regulatory Commission (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) is addressed below. |
| | Health Physics and Human Performance Branch (AHPB) |
| | Reviewers: Candace Clemons and Roger Pedersen AHPB-HP-RAI-1 Power Uprate Safety Analysis Report (PUSAR1) page 2-512 states, in part, that post-accident vital area access per NUREG-0737, Item II.B.2, mission doses were evaluated in the analyses that support the NRC safety evaluation (SE) for implementation of the Alternate Source Term (AST) license amendment, and that the TID-14844 was retained for these doses. However, the referenced amendment and SE only addressed the control room, not the other vital areas in the plant. In addition, the re-calculated doses for the control room were based on the AST source term. Resolve this apparent discrepancy. Provide a clear description of the technical basis for calculating the II.B.2 mission doses. |
| | AHPB-HP-RAI-2 PUSAR page 2-512, 5th paragraph, concludes that "aU of the doses are within the limits of GDC 19," with respect to vital area access. However, Table 2.9-11 "Post-LOCA Vital Areas 1 A proprietary (Le., non-publicly available) version of the PUSAR is contained in Attachment 6 to the application dated September 28, 2012. A non-proprietary (Le., publicly available) version of the PUSAR is contained in Attachment 4 to the application dated September 28,2012. |
| | Enclosure |
| | |
| | -2 Requiring Infrequent Occupancies," indicates several vital area mission doses that exceed the 5 rem GDC 19 acceptance criteria. Provide a list of all the vital areas (per the definition in II.B.2), |
| | the calculated mission dose to operators performing the vital action in these areas in post accident radiological conditions, and a description of the calculational method used to obtain the dose values. |
| | AHPB-HP-RAI-3 PUSAR page 2-514, 1s1 paragraph, and Table 2.10-2, indicate that the post-EPU N-16 skyshine dose rate at the nearest boundary is negligibly small. Provide a quantitive basis for this conclusion. Provide all input parameters (e.g., source strength, exposure geometries, distance to nearest boundary) needed to calculate the skyshine contribution to the most exposed member of the public during EPU operations. |
| | AHPB-HP-RAI-4 Table 2.10-2 on PUSAR page 2-518 presents calculated offsite doses at pre-EPU and EPU power levels. |
| | a} Are the input parameters used in these calculations consistent with the current Offsite Dose Calculation Manual (e.g., land use, meteorology, dose pathways, etc.)? |
| | b) Columns 3 and 4 are both calculated at 3528 MWt. However, the calculated doses are significantly different. Explain the differences in these two cases that cause these inconsistent results. |
| | c) Provide calculation PM-791 referenced in column 3 (Reference 105). |
| | d) What is the purpose of presenting the doses in column 4? |
| | e) Explain why the doses calculated for 4030 MWt (column 5) are significantly lower than the corresponding doses calculated at 3528 MWt (in column 4). Provide a technical basis for the acceptability of the dose results in column 5. |
| | f) Explain why a 5-year average dose is presented in column 6 of the table. Provide a technical basis for not listing the maximum value for each of these doses, or provide these maximum values for the 5 year period referenced. |
| | |
| | M. Pacilio -2 If you have any questions, please contact me at (301) 415-1420. |
| | Sincerely, Ira! (JHughey for) |
| | Richard B. Ennis, Senior Project Manager Plant Licensing Branch 1-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-277 and 50-278 |
| | |
| | ==Enclosure:== |
| | |
| | Request for Additional Information cc wtencl: Distribution via ListServ DISTRIBUTION PUBLIC RPedersen, NRRtDRAlAHPB LPL 1-2 RtF CClemons, NRRlDRAlAHPB RidsNrrDorlLpl1-2 Resource RidsNrrDraAhpb Resource RidsNrrPMPeachBottom Resource RidsAcrsAcnw_MailCTR Resource RidsNrrLAABaxter Resource ADAMS Accession No.: ML13221A064 *via email OFFICE LPL1-2/PM LPL1-2/LA* LPL1-2/BC(A) |
| | NAME REnnis ABaxter VRodriguez (JHughey for) |
| | DATE 08/12113 08/12/13 08/15/13 OFFICIAL RECORD COpy}} |
Letter Sequence RAI |
|---|
TAC:ME9631, BWR Technical Specification Changes That Implement the Revised Rule for Combustible Gas Control (Approved, Closed) TAC:ME9632, BWR Technical Specification Changes That Implement the Revised Rule for Combustible Gas Control (Approved, Closed) |
Initiation
- Request, Request, Request, Request, Request, Request, Request, Request, Request
- Acceptance
- Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement, Supplement
Administration
- Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance, Withholding Request Acceptance
- Meeting, Meeting
|
MONTHYEARML12286A0122012-09-28028 September 2012
License Amendment Request - Extended Power Uprate
Project stage: Request
ML12286A0112012-09-30030 September 2012
License Amendment Request - Extended Power Uprate, Attachment 4, NEDO-33566, Rev. 0, Safety Analysis Report, Constant Pressure Power Uprate, Page 2-488 Through End, and Attachments 5 and 7 Through 9
Project stage: Request
ML12279A2852012-10-22022 October 2012
Request for Withholding Information from Public Disclosure for Peach Bottom Atomic Power Station, Unit Nos. 2 and 3
Project stage: Withholding Request Acceptance
ML12279A2902012-10-22022 October 2012
Request for Withholding Information from Public Disclosure for Peach Bottom Atomic Power Station, Unit 2 Nos. 2 and 3
Project stage: Withholding Request Acceptance
ML13042A0962013-02-0808 February 2013
Completed Evaluation of Part 21 Potentially Reportable Condition Notification: Error in Main Steam Line High Flow Calculational Methodology
Project stage: Request
ML13051A0322013-02-15015 February 2013
Supplemental Information & Corrections Supporting Request for License Amendment Request - Extended Power Uprate - Supplement No. 1
Project stage: Supplement
ML13056A4822013-03-0808 March 2013
Acceptance Review Regarding Proposed Extended Power Uprate
Project stage: Acceptance Review
ML13052A8532013-03-11011 March 2013
Request for Withholding Information from Public Disclosure for Peach Bottom Atomic Power Station, Unit Nos. 2 and 3
Project stage: Withholding Request Acceptance
ML13052A8562013-03-11011 March 2013
Request for Withholding Information from Public Disclosure for Peach Bottom Atomic Power Station, Unit Nos. 2 and 3
Project stage: Withholding Request Acceptance
ML13081A7052013-03-28028 March 2013
Request for Additional Information Regarding License Amendment Request for Extended Power Uprate
Project stage: RAI
ML13106A1262013-04-26026 April 2013
Request for Additional Information Regarding License Amendment Request for Extended Power Uprate
Project stage: RAI
ML13129A1432013-05-0707 May 2013
Extended Power Uprate, Supplement 2 - Response to Request for Additional Information
Project stage: Supplement
ML13149A1452013-05-24024 May 2013
Extended Power Uprate License Amendment Request - Supplement 3 Response to Request for Additional Information - Extended Power Uprate
Project stage: Supplement
ML13156A3682013-06-0404 June 2013
Extended Power Uprate License Amendment Request Supplement 4 Response to Request for Additional Information - Extended Power Uprate
Project stage: Supplement
ML13134A3842013-06-10010 June 2013
Request for Withholding Information from Public Disclosure for Peach Bottom Atomic Power Station, Unit Nos. 2 and 3
Project stage: Withholding Request Acceptance
ML13161A3972013-06-26026 June 2013
Request for Withholding Information from Public Disclosure for Peach Bottom Atomic Power Station, Unit Nos. 2 and 3
Project stage: Withholding Request Acceptance
ML13182A0252013-06-27027 June 2013
Supplemental Information Supporting Request for License Amendment Request - Extended Power Uprate - Supplement No. 5
Project stage: Supplement
ML13178A3312013-07-0101 July 2013
Request for Additional Information Regarding License Amendment Request for Extended Power Uprate
Project stage: RAI
ML13183A1992013-07-0303 July 2013
Request for Additional Information Regarding License Amendment Request for Extended Power Uprate
Project stage: RAI
ML13203A1142013-07-23023 July 2013
Non-Proprietary - Request for Additional Information Regarding Proposed License Amendment Extended Power Uprate
Project stage: RAI
ML13203A1002013-07-23023 July 2013
Request for Additional Information Regarding License Amendment Request for Extended Uprate
Project stage: RAI
ML13211A4032013-07-30030 July 2013
EPU LAR Supplement 6 Attachment 2 - Response to Request for Additional Information - Snpb
Project stage: Supplement
ML13211A4022013-07-30030 July 2013
Extended Power Uprate License Amendment Request - Supplement 6 Response to Request for Additional Information - Extended Power Uprate
Project stage: Supplement
ML13213A2852013-07-31031 July 2013
Extended Power Uprate License Amendment Request - Supplement 7, Response to Request for Additional Information - Extended Power Uprate
Project stage: Supplement
ML13217A4312013-08-0505 August 2013
Extended Power Uprate License Amendment Request - Supplement 8 Response to Request for Additional Information - Extended Power Uprate
Project stage: Supplement
ML13221A0642013-08-15015 August 2013
Request for Additional Information Regarding License Amendment Request for Extended Power Uprate
Project stage: RAI
ML13240A0022013-08-22022 August 2013
Extended Power Uprate License Amendment Request - Supplement 9 Response to Request for Additional Information
Project stage: Supplement
ML13232A2772013-08-26026 August 2013
Request for Withholding Information from Public Disclosure for Peach Bottom Atomic Power Station, Unit Nos. 2 and 3
Project stage: Withholding Request Acceptance
ML13232A2902013-08-26026 August 2013
Request for Withholding Information from Public Disclosure for Peach Bottom Atomic Power Station, Unit Nos. 2 and 3
Project stage: Withholding Request Acceptance
ML13241A4182013-08-29029 August 2013
Extended Power Uprate License Amendment Request - Supplement 10 Response to Request for Additional Information
Project stage: Supplement
ML13253A4162013-09-11011 September 2013
Request for Additional Information Regarding License Amendment Request for Extended Power Uprate
Project stage: RAI
ML13260A0762013-09-13013 September 2013
Extended Power Uprate License Amendment Request - Supplement 11 Response to Request for Additional Information
Project stage: Supplement
ML13247A7692013-09-18018 September 2013
Request for Withholding Information from Public Disclosure for Peach Bottom Atomic Power Station, Unit Nos. 2 and 3
Project stage: Withholding Request Acceptance
ML13261A0432013-09-18018 September 2013
Requesty for Additional Information Regarding License Amendment Request for Extended Power Uprate
Project stage: Other
ML13242A0902013-10-0101 October 2013
Draft Environmental Assessment and Finding of No Significant Impact Related to the Proposed Extended Power Uprate
Project stage: Draft Other
ML13242A1082013-10-0101 October 2013
Draft Environmental Assessment and Finding of No Significant Impact Related to the Proposed Extended Power Uprate
Project stage: Draft Other
ML13268A4002013-10-0101 October 2013
Enclosure 2 - Peach Bottom Atomic Power Station, Units 2 and 3 - Request for Additional Information Regarding License Amendment Request for Extended Power Uprate
Project stage: RAI
ML13268A2632013-10-0101 October 2013
Request for Additional Information Regarding License Amendment Request for Extended Power Uprate
Project stage: RAI
ML13289A1912013-10-11011 October 2013
Extended Power Uprate License Amendment Request - Supplement 12, Response to Request for Additional Information
Project stage: Supplement
ML13289A3002013-10-15015 October 2013
Extended Power Uprate License Amendment Request - Supplement 13 Response to Request for Additional Information
Project stage: Supplement
ML13308A3312013-10-31031 October 2013
Extended Power Uprate License Amendment Request - Supplement 14, Response to Request for Additional Information
Project stage: Supplement
ML13291A1222013-11-0606 November 2013
Request for Withholding Information from Public Disclosure for Peach Bottom Atomic Power Station, Unit Nos. 2 and 3
Project stage: Withholding Request Acceptance
ML13339A8072013-11-22022 November 2013
Comment (1) of Kevin Borton on Behalf of Exelon Generation Co. LLC, on Proposed License Amendment to Increase the Maximum Reactor Power Level
Project stage: Other
ML13338A2502013-12-0404 December 2013
Notice of Forthcoming Closed Meeting with Exelon Generation Company, LLC (Exelon) to Discuss Steam Dryer Analysis Related to Proposed Extended Power Uprate (EPU) for Peach Bottom Atomic Power Station (Pbaps), Units 2 and 3
Project stage: Request
ML13345A6872013-12-0606 December 2013
Supplement 15 Response to Request for Additional Information Extended Power Uprate License Amendment Request
Project stage: Supplement
ML13308C4412013-12-11011 December 2013
Request for Withholding Information from Public Disclosure for Peach Bottom Atomic Power Station, Unit Nos. 2 and 3
Project stage: Withholding Request Acceptance
ML13351A3902013-12-19019 December 2013
Summary of Closed Meeting with Exelon Generation Company, LLC, to Discuss Steam Dryer Analysis Related to Proposed Extended Power Uprate for Peach Bottom Atomic Power Station, Unit Nos. 2 and 3
Project stage: Meeting
ML13358A0832013-12-20020 December 2013
Extended Power Uprate License Amendment Request- Supplement 16 Corrections, Clarifications and Additional Information - Extended Power Uprate
Project stage: Supplement
ML13345B3102014-01-0808 January 2014
Request for Withholding Information from Public Disclosure for Peach Bottom Atomic Power Station, Unit Nos. 2 and 3
Project stage: Withholding Request Acceptance
ML14002A1762014-01-15015 January 2014
Request for Additional Information Regarding License Amendment Request for Extended Power Uprate
Project stage: RAI
2013-05-24
[Table View] |
|
|---|
Category:Letter
MONTHYEARIR 05000277/20244012024-10-17017 October 2024
Security Baseline Inspection Report 05000277/2024401 and 05000278/2024401 (Cover Letter Only)
RS-24-093, Response to Request for Additional Information - Alternative Request to Utilize Code Case OMN-32, Alternative Requirements for Range and Accuracy of Pressure, Flow, and Differential Pressure Instruments Used in Pump Tests2024-10-10010 October 2024
Response to Request for Additional Information - Alternative Request to Utilize Code Case OMN-32, Alternative Requirements for Range and Accuracy of Pressure, Flow, and Differential Pressure Instruments Used in Pump Tests
ML24284A2842024-10-10010 October 2024
(Wcgs), Revision of One Form That Implements the Radiological Emergency Response Plan (RERP)
ML24281A1012024-10-0707 October 2024
Senior Reactor and Reactor Operator Initial License Examinations
ML24275A2442024-10-0303 October 2024
Reassignment of the U.S. Nuclear Regulatory Commission Branch Chief, Division of Operating Reactor Licensing
ML24240A1692024-09-18018 September 2024
Cy 2023 Summary of Decommissioning Trust Fund Status
ML24255A8642024-09-0606 September 2024
Rscc Wire & Cable LLC Dba Marmon Industrial Energy & Infrastructure - Part 21 Retraction of Final Notification
ML24221A2582024-09-0606 September 2024
Response to Request for Re-Engagement Regarding the Subsequent License Renewal Environmental Review for Peach Bottom Atomic Power Station, Units 2 and 3
05000277/LER-2024-003, (Pbaps), Unit 2, Automatic Reactor Scram Following Main Turbine Trip Due to Degraded Condenser Vacuum2024-09-0505 September 2024
(Pbaps), Unit 2, Automatic Reactor Scram Following Main Turbine Trip Due to Degraded Condenser Vacuum
IR 05000277/20240022024-09-0404 September 2024
Reissued Integrated Inspection Report 05000277/2024002 and 05000278/2024002
IR 05000277/20240052024-08-29029 August 2024
Updated Inspection Plan for Peach Bottom Atomic Power Station, Units 2 and 3 (Report 05000277/2024005 and 05000278/2024005)
IR 05000277/20240102024-08-23023 August 2024
Fire Protection Team Inspection Report 05000277/2024010 and 05000278/2024010
ML24235A0342024-08-23023 August 2024
U.S. Nuclear Regulatory Commission’S Analysis of Constellation Energy Generation’S Decommissioning Funding Status Report
ML24239A3972024-08-23023 August 2024
Rssc Wire & Cable LLC Dba Marmon - Part 21 Final Notification - 57243-EN 57243
ML24227A5492024-08-14014 August 2024
Integrated Inspection Report 05000277/2024002 and 05000278/2024002
IR 05000482/20240052024-08-14014 August 2024
Updated Inspection Plan for Wolf Creek Generating Station (Report 05000482/2024005)
ML24225A1692024-08-12012 August 2024
10 CFR 50.46 Annual Report
ML24222A6772024-08-0909 August 2024
Response to Request for Additional Information for Application to Revise Technical Specifications to Adopt TSTF-591-A, Revise Risk Informed Completion Time (RICT) Program Revision 0 and Revise 10 CFR 50.69 License Condition
ML24214A3232024-08-0101 August 2024
Response to Request for Additional Information - Request for Alternative Schedule to Complete Decommissioning Beyond 60 Years of Permanent Cessation of Operations
ML24208A0962024-07-25025 July 2024
57243-EN 57243 - Rssc Wire & Cable LLC, Dba Marmon - Part 21 Notification
ML24206A1252024-07-24024 July 2024
Revision of Three Procedures and Two Forms That Implement the Radiological Emergency Response Plan (RERP)
ML24191A0612024-07-0606 July 2024
Independent Spent Fuel Storage Installation (ISFSI) - Annual Radioactive Effluent Release Report
ML24178A3672024-06-26026 June 2024
Correction to 2023 Annual Radioactive Effluent Release Report – Report 47
ML24178A4142024-06-26026 June 2024
Revision of One Procedure and One Form That Implement the Radiological Emergency Response Plan (RERP)
ML24177A1512024-06-24024 June 2024
Post Accident Monitoring Instrumentation Report
ML24166A1172024-06-20020 June 2024
Regulatory Audit Summary Regarding Proposed Alternative Schedule to Complete Decommissioning Beyond 60 Years
RS-24-061, Constellation Energy Generation, LLC, Response to NRC Regulatory Issue Summary 2024-01, Preparation and Scheduling of Operator Licensing Examinations2024-06-14014 June 2024
Constellation Energy Generation, LLC, Response to NRC Regulatory Issue Summary 2024-01, Preparation and Scheduling of Operator Licensing Examinations
IR 05000277/20243012024-06-13013 June 2024
Initial Operator Licensing Examination Report 05000277/2024301 and 05000278/2024301
RS-24-058, Regarding Subsequent License Renewal Environmental Review2024-06-0505 June 2024
Regarding Subsequent License Renewal Environmental Review
ML24151A6482024-06-0303 June 2024
Changes in Reactor Decommissioning Branch Project Management Assignments for Some Decommissioning Facilities
ML24150A2722024-05-29029 May 2024
Annual Radiological Environmental Operating Report 81, January 1, 2023 Through December 31, 2023
ML24150A0032024-05-28028 May 2024
Request for Exemptions from 10 CFR 50.82(a)(8)(i)(A) and 10 CFR 50.75(h)(1)(iv) and Proposed Amendment to the Decommissioning Trust Agreement
ML24079A0762024-05-23023 May 2024
Issuance of Amendments to Adopt TSTF 264
RS-24-055, 2023 Corporate Regulatory Commitment Change Summary Report2024-05-17017 May 2024
2023 Corporate Regulatory Commitment Change Summary Report
IR 05000277/20240012024-05-13013 May 2024
Integrated Inspection Report 05000277/2024001 and 05000278/2024001
ML24134A1792024-05-13013 May 2024
Supplemental Information in Support of Request for Alternative Schedule to Complete Decommissioning Beyond 60 Years of Permanent Cessation of Operations
IR 05000277/20245012024-05-0808 May 2024
Emergency Preparedness Biennial Exercise Inspection Report 05000277/2024501 and 05000278/2024501
RS-24-041, Alternative Request to Utilize Code Case OMN-32, Alternative Requirements for Range and Accuracy of Pressure, Flow, and Differential Pressure Instruments Used in Pump Tests2024-04-30030 April 2024
Alternative Request to Utilize Code Case OMN-32, Alternative Requirements for Range and Accuracy of Pressure, Flow, and Differential Pressure Instruments Used in Pump Tests
ML24121A1832024-04-30030 April 2024
Pre-Submittal Meeting Presentation Material Peach Bottom ECCS Compensated Level System Replacement Project
ML24118A0032024-04-27027 April 2024
2023 Annual Radioactive Effluent Release Report - Report 47
ML24120A2762024-04-23023 April 2024
Independent Spent Fuel Storage Installation (ISFSI) Facility - Annual Radioactive Effluent Release Report 66 January 1, 2023 Through December 31, 2023
CNL-24-033, Central Emergency Control Center Emergency Plan Implementing Procedure Revisions2024-04-17017 April 2024
Central Emergency Control Center Emergency Plan Implementing Procedure Revisions
ML24107A2462024-04-15015 April 2024
Submittal of Changes to Technical Specifications Bases
ML24103A2042024-04-12012 April 2024
Constellation Energy Generation, LLC, Application to Revise Technical Specifications to Adopt TSTF-591-A, Revise Risk Informed Completion Time (RICT) Program Revision 0 and Revise 10 CFR 50.69 License Condition
ML24102A0472024-04-11011 April 2024
Operator Licensing Examination Approval
ML24099A0012024-04-0808 April 2024
(PBAPS) Units 2 and 3, Uncoordinated DC Circuits Cause Unanalyzed Condition
RS-24-002, Constellation Energy Generation, LLC - Annual Property Insurance Status Report2024-04-0101 April 2024
Constellation Energy Generation, LLC - Annual Property Insurance Status Report
RS-24-023, Report on Status of Decommissioning Funding.2024-03-22022 March 2024
Report on Status of Decommissioning Funding.
05000277/LER-2024-001, Submittal of LER 2024-001-00 for Peach Bottom Atomic Power Station (PBAPS) Unit 2, Automatic Reactor Scram Due to an Invalid Generator Lockout2024-03-21021 March 2024
Submittal of LER 2024-001-00 for Peach Bottom Atomic Power Station (PBAPS) Unit 2, Automatic Reactor Scram Due to an Invalid Generator Lockout
IR 05000277/20244022024-03-12012 March 2024
Cybersecurity Inspection Report 05000277/2024402 and 05000278/2024402 (Cover Letter Only)
2024-09-06
[Table view]
Category:Request for Additional Information (RAI)
MONTHYEARML24197A0162024-07-12012 July 2024
NRR E-mail Capture - Final RAI - Constellation Energy Generation, LLC - Fleet Request - License Amendment Request to Adopt TSTF-591
ML24185A1772024-07-0303 July 2024
Request for Additional Information
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
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2024-07-03
[Table view] |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 August 15, 2013 Mr. Michael J. Pacilio President and Chief Nuclear Officer Exelon Generation Company, LLC 4300 Winfield Road Warrenville, I L 60555
SUBJECT:
PEACH BOTTOM ATOMIC POWER STATION, UNITS 2 AND 3 - REQUEST FOR ADDITIONAL INFORMATION REGARDING LICENSE AMENDMENT REQUEST FOR EXTENDED POWER UPRATE (TAC NOS. ME9631 AND ME9632)
Dear Mr. Pacilio:
By letter dated September 28,2012, as supplemented by letters dated February 15, 2013, May 7,2013, May 24,2013, June 4,2013, June 27,2013, July 30,2013, July 31,2013, and August 5, 2013, (Agencywide Documents Access and Management System (ADAMS)
Accession Nos. ML122860201, ML13051A032, ML13129A143, ML13149A145, ML13156A368, ML13182A025, ML13211A457, ML13213A285, and ML13217A431, respectively), Exelon Generation Company, LLC (Exelon, the licensee) submitted a license amendment request for Peach Bottom Atomic Power Station, Units 2 and 3. The proposed amendment would authorize an increase in the maximum power level from 3514 megawatts thermal (MWt) to 3951 MWt.
The requested change, referred to as an extended power uprate, represents an increase of approximately 12.4 percent above the current licensed thermal power level.
The Nuclear Regulatory Commission (NRC) staff is reviewing your submittal and has determined that additional information is needed to complete its review. The specific questions are found in the enclosed request for additional information (RAI). The RAI questions were provided in draft form to Mr. Kevin Borton of your staff via e-mail on July 18, 2013. The draft questions were sent to ensure that the questions were understandable, the regulatory basis for the questions was clear, and to determine if the information was previously docketed.
A conference call between the NRC staff and the Exelon staff was held on August 8, 2013, to discuss the questions. During the call, Mr. Borton stated that Exelon would provide a response to the RAI questions within 30 days of the date of this letter.
Please note that if you do not respond to this letter by the agreed-upon date or provide an acceptable alternate date in writing, we may reject your application for amendment under the provisions of Title 10 of the Code of Federal Regulations, Section 2.108.
M. Pacilio - 2 If you have any questions, please contact me at (301) 415-1420.
Richard B. Ennis, Senior Project Manager Plant Licensing Branch 1-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-277 and 50-278
Enclosure:
Request for Additional Information cc w/encl: Distribution via ListServ
REQUEST FOR ADDITIONAL INFORMATION REGARDING PROPOSED LICENSE AMENDMENT EXTENDED POWER UPRATE EXELON GENERATION COMPANY, LLC PEACH BOTTOM ATOMIC POWER STATION, UNITS 2 AND 3 DOCKET NOS. 50-277 AND 50-278 By letter dated September 28, 2012, as supplemented by letters dated February 15, 2013, May 7,2013, May 24,2013, June 4,2013, June 27, 2013, July 30,2013, July 31,2013, and August 5,2013, (Agencywide Documents Access and Management System (ADAMS)
Accession Nos. ML122860201, ML13051A032, ML13129A143, ML13149A145, ML13156A368, ML13182A025, ML13211A457, ML13213A285, and ML13217A431, respectively), Exelon Generation Company, LLC (Exelon, the licensee) submitted a license amendment request for Peach Bottom Atomic Power Station (PBAPS), Units 2 and 3. The proposed amendment would authorize an increase in the maximum power level from 3514 megawatts thermal (MWt) to 3951 MWt. The requested change, referred to as an extended power uprate (EPU), represents an increase of approximately 12.4 percent above the current licensed thermal power level.
The Nuclear Regulatory Commission (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) is addressed below.
Health Physics and Human Performance Branch (AHPB)
Reviewers: Candace Clemons and Roger Pedersen AHPB-HP-RAI-1 Power Uprate Safety Analysis Report (PUSAR1) page 2-512 states, in part, that post-accident vital area access per NUREG-0737, Item II.B.2, mission doses were evaluated in the analyses that support the NRC safety evaluation (SE) for implementation of the Alternate Source Term (AST) license amendment, and that the TID-14844 was retained for these doses. However, the referenced amendment and SE only addressed the control room, not the other vital areas in the plant. In addition, the re-calculated doses for the control room were based on the AST source term. Resolve this apparent discrepancy. Provide a clear description of the technical basis for calculating the II.B.2 mission doses.
AHPB-HP-RAI-2 PUSAR page 2-512, 5th paragraph, concludes that "aU of the doses are within the limits of GDC 19," with respect to vital area access. However, Table 2.9-11 "Post-LOCA Vital Areas 1 A proprietary (Le., non-publicly available) version of the PUSAR is contained in Attachment 6 to the application dated September 28, 2012. A non-proprietary (Le., publicly available) version of the PUSAR is contained in Attachment 4 to the application dated September 28,2012.
Enclosure
-2 Requiring Infrequent Occupancies," indicates several vital area mission doses that exceed the 5 rem GDC 19 acceptance criteria. Provide a list of all the vital areas (per the definition in II.B.2),
the calculated mission dose to operators performing the vital action in these areas in post accident radiological conditions, and a description of the calculational method used to obtain the dose values.
AHPB-HP-RAI-3 PUSAR page 2-514, 1s1 paragraph, and Table 2.10-2, indicate that the post-EPU N-16 skyshine dose rate at the nearest boundary is negligibly small. Provide a quantitive basis for this conclusion. Provide all input parameters (e.g., source strength, exposure geometries, distance to nearest boundary) needed to calculate the skyshine contribution to the most exposed member of the public during EPU operations.
AHPB-HP-RAI-4 Table 2.10-2 on PUSAR page 2-518 presents calculated offsite doses at pre-EPU and EPU power levels.
a} Are the input parameters used in these calculations consistent with the current Offsite Dose Calculation Manual (e.g., land use, meteorology, dose pathways, etc.)?
b) Columns 3 and 4 are both calculated at 3528 MWt. However, the calculated doses are significantly different. Explain the differences in these two cases that cause these inconsistent results.
c) Provide calculation PM-791 referenced in column 3 (Reference 105).
d) What is the purpose of presenting the doses in column 4?
e) Explain why the doses calculated for 4030 MWt (column 5) are significantly lower than the corresponding doses calculated at 3528 MWt (in column 4). Provide a technical basis for the acceptability of the dose results in column 5.
f) Explain why a 5-year average dose is presented in column 6 of the table. Provide a technical basis for not listing the maximum value for each of these doses, or provide these maximum values for the 5 year period referenced.
M. Pacilio -2 If you have any questions, please contact me at (301) 415-1420.
Sincerely, Ira! (JHughey for)
Richard B. Ennis, Senior Project Manager Plant Licensing Branch 1-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation Docket Nos. 50-277 and 50-278
Enclosure:
Request for Additional Information cc wtencl: Distribution via ListServ DISTRIBUTION PUBLIC RPedersen, NRRtDRAlAHPB LPL 1-2 RtF CClemons, NRRlDRAlAHPB RidsNrrDorlLpl1-2 Resource RidsNrrDraAhpb Resource RidsNrrPMPeachBottom Resource RidsAcrsAcnw_MailCTR Resource RidsNrrLAABaxter Resource ADAMS Accession No.: ML13221A064 *via email OFFICE LPL1-2/PM LPL1-2/LA* LPL1-2/BC(A)
NAME REnnis ABaxter VRodriguez (JHughey for)
DATE 08/12113 08/12/13 08/15/13 OFFICIAL RECORD COpy
