Letter Sequence Other |
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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, Request
- Acceptance, Acceptance
- 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
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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
ML12312A4432012-12-18018 December 2012
Non-Proprietary, Supplemental Information Needed for Acceptance of Requested License Action Extended Power Uprate
Project stage: Acceptance Review
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
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
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
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
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
ML13203A1002013-07-23023 July 2013
Request for Additional Information Regarding License Amendment Request for Extended 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
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
ML13211A4032013-07-30030 July 2013
EPU LAR Supplement 6 Attachment 2 - Response to Request for Additional Information - Snpb
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
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
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
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
ML13345A6872013-12-0606 December 2013
5 Response to Request for Additional Information Extended Power Uprate License Amendment Request
Project stage: Response to RAI
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
ML14002A3072014-01-15015 January 2014
Final RAI - Enclosure 2
Project stage: RAI
ML14002A1762014-01-15015 January 2014
Request for Additional Information Regarding License Amendment Request for Extended Power Uprate
Project stage: RAI
2013-04-26
[Table View] |
Text
UNITED STATES NUCLEAR REGULATORY COMMISSION WASHINGTON, D.C. 20555-0001 September 18, 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, August 5,2013, August 22,2013, August 29,2013, and September 13, 2013 (Agencywide Documents Access and Management System Accession Nos. ML122860201, ML13051A032, ML13129A143, ML13149A145, ML13156A368, ML13182A025, ML13211A457, ML13213A285, ML13217A431, ML13240A002, ML13241A418, and ML13260A076, 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-mails on August 6, 2013, and August 26, 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 September 17, 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.
Sincerely, 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 UPRA TE 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, August 5,2013, August 22,2013, August 29,2013, and September 13, 2013 (Agencywide Documents Access and Management System (ADAMS) Accession Nos. ML122860201, ML13051A032, ML13129A143, ML13149A145, ML13156A368, ML13182A025, ML13211A457, ML13213A285, ML13217A431, ML13240A002, ML13241A418, and ML13260A076, 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.
Reactor Systems Branch (SRXB)
Reviewer: Ben Parks SRXB RAI-29 With regard to the overpressure analyses performed in support of the requested EPU, provide the number of safety relief valves (SRVs) and safety valves (SVs) assumed available, including setpoints and assumed lift setpoint tolerances. Confirm whether the EPU safety analyses bound conditions associated with the proposed SRV and SV lift setpoint tolerance increases that were requested by Exelon's license amendment request for PBAPS, Units 2 and 3, dated June 10,2013 (ADAMS Accession No. ML131750144).
SRXB RAI-30 to the application dated September 28, 2012, describes proposed modifications to PBAPS associated with the EPU. Condensate storage tank (CST) modifications are described in Enclosure ge to Attachment 9. Section 3.1 of Enclosure ge describes the addition of a CST standpipe to "ensure a CST dedicated usable volume for the HPCI [high pressure coolant injection] and RCIC [reactor core isolation cooling] pumps for SBO [station blackout], A TWS
[anticipated transient without scram1, and Appendix R events." This section refers to Enclosure
- 2 Section 2.3.5, "Station Blackout," of the Power Uprate Safety Analysis Report (PUSAR1) and states that "[t]he CST volume needed for SBO at EPU conditions is approximately 94,570 gallons." Provide the EPU SBO analysis that concludes that this is the CST inventory required for mitigation.
Electrical Engineering Branch (EEEB)
Reviewer: Swagata Som EEEB RAI-16 On page 2-135 in Section 2.3.5 of the PUSAR, the licensee states that "[e]valuation of the PBAPS Class 1E Battery Capacity has shown that PBAPS has adequate battery capacity to support decay heat removal during a SBO for the required coping duration." Page 2-134 of the PUSAR indicates that SBO was re-evaluated for the proposed EPU using the guidelines of NUMARC 87-00, "Guidelines and Technical Bases for NUMARC Initiatives Addressing Station Blackout at Light Water Reactors" and NRC Regulatory Guide (RG) 1.155, "Station Blackout."
Explain the design duty cycle of Class 1E battery to support all SBO loads for the required SBO coping duration. Confirm that the PBAPS Class 1E batteries and alternate alternating current sources will have adequate capacity and capability during the plant power uprated condition to support SBO loads for the entire SBO coping duration consistent with RG 1.155 and NUMARC 87-00.
Health Physics and Human Performance Branch (AHPB)
Reviewer: Molly Keefe AHPB RAI-6 On pages 2 and 3 of Attachment 3 to the supplement dated May 24, 2013, the licensee described changes to current operator actions related to emergency or abnormal operating procedures that will occur as a result of the proposed EPU. Specify what controls are in place to assure the following:
a) Cues exist that alerts the operator to action in a timely manner.
b) Tasks are within the capability of all PBAPS operators.
c) Operator feedback capability exists to determine whether the actions are complete and effective.
d) Training content, method, and frequency are determined and implemented.
e) The location and accessibility of required displays and controls are considered.
1 A proprietary (i.e., non-publicly available) version of the PUSAR is contained in Attachment 6 to the application dated September 28,2012. A non-proprietary (i.e" publicly available) version of the PUSAR is contained in Attachment 4 to the application dated September 28, 2012.
- 3 f} List the controlled procedures that guide the operator's actions for the cited changes to operator actions.
AHPB RAI-7 Given the number of new operator actions, please discuss how the impacts of the EPU and associated plant modifications were identified and what, if any, analysis was done to understand impacts to operator workload.
M. Pacilio
-2 If you have any questions, please contact me at (301) 415-1420.
Docket Nos. 50-277 and 50-278
Enclosure:
Request for Additional Information cc w/encl: Distribution via ListServ DISTRIBUTION PUBLIC LPL1-2 RtF RidsNrrDorlLpl1-2 Resource RidsNrrPMPeachBottom Resource RidsNrrLAABaxter Resource RidsAcrsAcnw_MailCTR Resource ADAMS Accession No.: ML13261A043 Sincerely,
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Richard B. Ennis, Senior Project Manager Plant Licensing Branch 1-2 Division of Operating Reactor Licensing Office of Nuclear Reactor Regulation RidsNrrDeEeeb Resource SSom, NRRtDElEEEB RidsNrrDraAhpb Resource MKeefe, NRRtDRAlAHPB RidsNrrDssSrxb Resource BParks, NRRtDSS/SRXB OFFICE LPL1*2/PM LPL1-2/LA LPL1-21 NAME REnnis ABaxter VRodriguez DATE 09/18/13 09/18/13 09/18/13 OFFICIAL RECORD COpy
