Letter Sequence Response to RAI |
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MONTHYEARML1130814412011-11-0303 November 2011
License Amendment Request - Use of Neutron Absorbing Inserts in Spent Fuel Pool Storage Racks
Project stage: Request
ML1134003382011-12-0606 December 2011
Supplemental Information Required for Peach Bottom November 3, 2011, Submittal (TAC Nos. ME7538 & ME7539)
Project stage: Other
ML1132602952011-12-14014 December 2011
Supplemental Information Needed for Acceptance of Requested Licensing Action Use of Neutron Absorbing Inserts in Units 2 and 3 Spent Fuel Pool Storage Racks
Project stage: Acceptance Review
ML1135702082011-12-22022 December 2011
Response to License Amendment Request - Use of Neutron Absorbing Inserts in Units 2 & 3 Spent Fuel Pool Storage Racks
Project stage: Request
ML12096A0522012-04-0404 April 2012
Response to Request for Additional Information - License Amendment Request for Use of Neutron Absorbing Inserts in Spent Fuel Pool Storage Racks
Project stage: Response to RAI
ML1208702032012-04-18018 April 2012
Request for Additional Information Regarding License Amendment Request for Use of Neutron Absorbing Inserts in Units 2 and 3 Spent Fuel Pool Storage Racks
Project stage: RAI
ML1212202712012-05-16016 May 2012
Request for Withholding Information from Public Disclosure for Peach Bottom Atomic Power Station, Unit Nos. 2 and 3
Project stage: Withholding Request Acceptance
ML1212202552012-05-16016 May 2012
Request for Withholding Information from Public Disclosure for Peach Bottom Atomic Power Station, Unit Nos. 2 and 3
Project stage: Withholding Request Acceptance
ML12139A4042012-05-17017 May 2012
Response to Request for Additional Information - License Amendment Request for Use of Neutron Absorbing Inserts in Spent Fuel Pool Storage Racks
Project stage: Response to RAI
ML1212505692012-05-22022 May 2012
Request for Additional Information Regarding License Amendment Request for Use of Neutron Absorbing Inserts in Spent Fuel Pool Storage Racks
Project stage: RAI
ML12188A0942012-06-21021 June 2012
Response to Request for Additional Information - License Amendment Request for Use of Neutron Absorbing Inserts in Units 2 and 3 Spent Fuel Pool Storage Racks
Project stage: Response to RAI
ML12194A6082012-07-12012 July 2012
Draft Request for Additional Information
Project stage: Draft RAI
ML12192A3532012-07-19019 July 2012
Request for Withholding Information from Public Disclosure for Peach Bottom Atomic Power Station, Units 2 and 3
Project stage: Withholding Request Acceptance
ML12228A4742012-08-15015 August 2012
Response to Request for Additional Information - License Amendment Request for Use of Neutron Absorbing Inserts in Units 2 and 3 Spent Fuel Pool Storage Racks
Project stage: Response to RAI
ML12319A2302012-11-13013 November 2012
Response to Request for Additional Information - License Amendment Request for Use of Neutron Absorbing Inserts in Units 2 and 3 Spent Fuel Pool Storage Racks
Project stage: Response to RAI
ML13063A3372013-03-0404 March 2013
Draft Request for Additional Information
Project stage: Draft RAI
ML13112A8572013-05-0202 May 2013
Request for Withholding Information from Public Disclosure for Peach Bottom Atomic Power Station, Unit Nos. 2 and 3
Project stage: Withholding Request Acceptance
ML13121A2882013-05-13013 May 2013
Transmittal of Draft Safety Evaluation for Proposed Amendment Use of Neutron Absorbing Inserts in Spent Fuel Pool Storage Racks
Project stage: Draft Approval
ML13114A9292013-05-21021 May 2013
Issuance of Amendments Use of Neutron Absorbing Inserts in Spent Fuel Pool Storage Racks
Project stage: Approval
2012-05-17
[Table View] |
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Category:Letter
MONTHYEARML24022A2262024-01-22022 January 2024
(PBAPS) Unit 3 - Submittal of the Inservice Inspection (ISI) Owner'S Activity Report (OAR) for the 24th Refueling Outage for Unit 3
ML23346A2412024-01-17017 January 2024
Staff Assessment of Updated Seismic Hazards Following the NRC Process for the Ongoing Assessment of Natural Hazards Information (EPID L-2019-PMP-0061) - Letter
IR 05000277/20234022024-01-11011 January 2024
Security Baseline Inspection Report 05000277/2023402 and 05000278/2023402 and Independent Spent Fuel Storage Installation Security Inspection 07200029/2023401
ML23354A1922024-01-0505 January 2024
Exemption from Select Requirements of 10 CFR Part 73 (Security Notifications, Reports, and Recordkeeping and Suspicious Activity Reporting)
ML23355A0622023-12-18018 December 2023
Independent Spent Fuel Storage Installation (Isfsi), Security Plan, Training and Qualification Plan, and Safeguards Contingency Plan
ML23278A1292023-12-14014 December 2023
Units 1 & 2; Limerick, Units 1 & 2; Nine Mile Point, Units 1 & 2; and Peach Bottom, Units 2 & 3 -Revision to Approved Alternatives to Use Boiling Water Reactor Vessel and Internals Project Guidelines
ML23305A1402023-12-13013 December 2023
Units 1 & 2; Nine Mile Point, Unit 2; Peach Bottom, Units 2 & 3; and Quad Cities, Units 1 and 2 - Issuance of Amendments to Adopt Traveler TSTF-580
ML23334A2502023-11-30030 November 2023
Request for Exemption from Enhanced Weapons, Firearms Background Checks, and Security Event Notifications Implementation
ML23270C0072023-11-29029 November 2023
Notice of Proposed Amendment to Decommissioning Trust Agreement
ML23317A1192023-11-10010 November 2023
Constellation Energy Generation, LLC - 2023 Annual Report - Guarantees of Payment of Deferred Premiums
ML23305A3472023-11-0101 November 2023
Revision of One Form That Implements the Radiological Emergency Response Plan (RERP)
IR 05000277/20230032023-10-30030 October 2023
Integrated Inspection Report 05000277/2023003 and 05000278/2023003 and Exercise of Enforcement Discretion
ML23286A0012023-10-13013 October 2023
Reply to a Notice of Violation (NOV) - NOV 05000277, 05000278/2023010-01
RS-23-097, Constellation Energy Generation, LLC, Advisement of Leadership Changes and Submittal of Updated Standard Practice Procedures Plans2023-10-12012 October 2023
Constellation Energy Generation, LLC, Advisement of Leadership Changes and Submittal of Updated Standard Practice Procedures Plans
ML23271A1342023-10-11011 October 2023
Dtf Analysis Letter
IR 05000277/20244012023-10-0505 October 2023
Information Request for the Cybersecurity Baseline Inspection, Notification to Perform Inspection 05000277/2024401 and 05000278/2024401
ML23265A1502023-09-22022 September 2023
License Amendment Request Revise a License Condition and Certain Technical Specifications to Remove Restrictions in Support of Decommissioning Activities
ML23264A8682023-09-21021 September 2023
Independent Spent Fuel Storage Installation Registration of Dry Storage Canister WC-EOS-37PTH-008-B4L, WC-EOS-37PTH-007-B4L, and WC-EOS-37PTH-002-B4L
IR 05000277/20230102023-09-15015 September 2023
Biennial Problem Identification and Resolution Inspection Report 05000277/2023010 and 05000278/2023010 and Notice of Violation
ML23251A2022023-09-11011 September 2023
Cover Letter W/Report
LR-N23-0045, and Peach Bottom Atomic Power Station, Units 2 and 3 - Notice of Proposed Amendment to Decommissioning Trust Agreement2023-09-0808 September 2023
and Peach Bottom Atomic Power Station, Units 2 and 3 - Notice of Proposed Amendment to Decommissioning Trust Agreement
IR 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)
ML23158A1952023-08-30030 August 2023
R. E. Ginna - Issuance of Amendments to Adopt TSTF-273-A, Revision 2, Safety Function Determination Program Clarifications
ML23232A0012023-08-19019 August 2023
Revision of One Procedure That Implements the Radiological Emergency Response Plan (Rerp). Includes EPP 06-009, Rev. 13
IR 05000277/20230112023-08-15015 August 2023
Comprehensive Engineering Team Inspection Report 05000277/2023011 and 05000278/2023011
ML23226A1112023-08-14014 August 2023
10 CFR 50.46 Annual Report
IR 05000277/20230022023-08-0808 August 2023
Integrated Inspection Report 05000277/2023002 and 05000278/2023002
RS-23-087, Revision to Approved Alternatives Associated with the Use of the BWRVIP Guidelines in Lieu of Specific ASME Code Requirements on Reactor2023-08-0404 August 2023
Revision to Approved Alternatives Associated with the Use of the BWRVIP Guidelines in Lieu of Specific ASME Code Requirements on Reactor
IR 05000277/20230402023-07-17017 July 2023
95001 Inspection Supplemental Report 05000277/2023040 and Follow-Up Assessment Letter
ML23188A0532023-07-0707 July 2023
Registration of Use of Independent Spent Fuel Storage Installation (ISFSI) Casks
ML23186A1272023-07-0606 July 2023
Response to Disputed Non-Cited Violation Documented in Peach Bottom Atomic Power Station, Units 2 and 3, Inspection Report 05000277/2022004 and 05000278/2022004
ML23178A0352023-06-27027 June 2023
Senior Reactor and Reactor Operator Initial License Examinations
RS-23-077, Response to NRC Regulatory Issue Summary 2023-01, Preparation and Scheduling of Operator Licensing Examinations2023-06-16016 June 2023
Response to NRC Regulatory Issue Summary 2023-01, Preparation and Scheduling of Operator Licensing Examinations
ML23151A4162023-05-31031 May 2023
Revision of One Form That Implements the Radiological Emergency Response Plan (RERP) for Wolf Creek Generating Station (WCGS)
ML23150A2052023-05-30030 May 2023
Independent Spent Fuel Storage Installation (Isfsi), Annual Radiological Environmental Operating Report 80 January 1, 2022 Through December 31, 2022
RS-23-042, Application to Revise Technical Specifications to Adopt TSTF-580, Provide Exception from Entering Mode 4 with No Operable RHR Shutdown Cooling2023-05-25025 May 2023
Application to Revise Technical Specifications to Adopt TSTF-580, Provide Exception from Entering Mode 4 with No Operable RHR Shutdown Cooling
ML23142A1602023-05-23023 May 2023
Summary of April 11, 2023, Public Observation Meeting with Constellation Energy Generation, LLC Re Proposed Exemption Request from Work Hour Requirements
ML23132A1582023-05-18018 May 2023
Correction to Technical Specification 3.4.7 (Page 3.4-16) Issued in Amendment No. 337
ML23132A1532023-05-12012 May 2023
Transmittal of 2022 Annual Financial Reports
WM 23-0009, Financial Assurance Requirements for Decommissioning Nuclear Power Reactors 10 CFR 50.75(f)(1)2023-05-10010 May 2023
Financial Assurance Requirements for Decommissioning Nuclear Power Reactors 10 CFR 50.75(f)(1)
IR 05000277/20230012023-05-0808 May 2023
Integrated Inspection Report 05000277/2023001 and 05000278/2023001
ML23114A2522023-04-28028 April 2023
Request to Use a Provision of a Later Edition of the ASME Boiler & Pressure Vessel Code, Section XI
2024-01-05
[Table view] |
Text
'1 l \
10 CFR 50.90 August 15, 2012 U.S. Nuclear Regulatory Commission ATTN: Document Control Desk Washington, DC 20555-0001 Peach Bottom Atomic Power Station, Units 2 and 3 Renewed Facility Operating License Nos. DPR-44 and DPR-56 NRC Docket Nos. 50-277 and 50-278
Subject:
Response to Request for Additional Information- License Amendment Request for Use of Neutron Absorbing Inserts in Units 2 and 3 Spent Fuel Pool Storage Racks
References:
- 1) Letter from M. D. Jesse (Exelon Generation Company, LLC) to U.S. Nuclear Regulatory Commission, .. License Amendment Request
- Use of Neutron Absorbing Inserts in Units 2 and 3 Spent Fuel Pool Storage Racks, .. dated November 3, 2011
- 2) Letter from J. D. Hughey (U.S. Nuclear Regulatory Commission) to M. J. Pacilio (Exelon Generation Company, LLC), .. Peach Bottom Atomic Power Station, Units 2 and 3- Supplemental Information Needed for Acceptance of Requested Licensing Action RE: Use of Neutron Absorbing Inserts in Units 2 and 3 Spent Fuel Pool Storage Racks (TAC NOS. ME7538 and ME7539), .. dated December 14, 2011
- 3) Letter from M. D. Jesse (Exelon Generation Company, LLC) to U.S. Nuclear Regulatory Commission, .. License Amendment Request
-Use of Neutron Absorbing Inserts in Units 2 and 3 Spent Fuel Pool Storage Racks, .. dated December 22, 2011
- 4) Letter from J. D. Hughey (U.S. Nuclear Regulatory Commission) to M. J. Pacilio (Exelon Generation Company, LLC), .. Peach Bottom Atomic Power Station, Units 2 and 3- Request for Additional Information Regarding License Amendment Request for Use of Neutron Absorbing Inserts in Units 2 and 3 Spent Fuel Pool Storage Racks (TAC NOS. ME7538 and ME7539), .. dated March 12, 2012
U.S. Nuclear Regulatory Commission Response to Request for Additional Information License Amendment Request Spent Fuel Pool Rack Inserts August 15, 2012 Page 2
- 5) Letter from M. D. Jesse (Exelon Generation Company, LLC) to U.S. Nuclear Regulatory Commission, .. Response to Request for Additional Information - License Amendment Request for Use of Neutron Absorbing Inserts in Units 2 and 3 Spent Fuel Pool Storage Racks, .. dated April 4, 2012
- 6) Letter from R. B. Ennis (U.S. Nuclear Regulatory Commission) to M. J. Pacilio (Exelon Generation Company, LLC), .. Peach Bottom Atomic Power Station, Units 2 and 3- Request for Additional Information Regarding License Amendment Request for Use of Neutron Absorbing Inserts in Spent Fuel Pool Storage Racks (TAC NOS. ME7538 and ME7539), .. dated April 18, 2012
- 7) Letter from M. D. Jesse (Exelon Generation Company, LLC) to U.S. Nuclear Regulatory Commission, .. Response to Request for Additional Information - License Amendment Request for Use of Neutron Absorbing Inserts in Units 2 and 3 Spent Fuel Pool Storage Racks, .. dated May 17, 2012
- 8) Letter from R. B. Ennis (U.S. Nuclear Regulatory Commission) to M. J. Pacilio (Exelon Generation Company, LLC), .. Peach Bottom Atomic Power Station, Units 2 and 3- Request for Additional Information Regarding License Amendment Request for Use of Neutron Absorbing Inserts in Spent Fuel Pool Storage Racks (TAC NOS. ME7538 and ME7539), .. dated May 22, 2012
- 9) Letter from M. D. Jesse (Exelon Generation Company, LLC) to U.S. Nuclear Regulatory Commission, .. Response to Request for Additional Information - License Amendment Request for Use of Neutron Absorbing Inserts in Units 2 and 3 Spent Fuel Pool Storage Racks, .. dated June 21, 2012
- 10) E-Mail from R. B. Ennis (U.S. Nuclear Regulatory Commission) to T. R. Loomis (Exelon Generation Company, LLC), .. Draft RAI - PBAPS SFP Rack Insert LAR (TACs ME7538 & ME7539), .. dated July 12, 2012 In the Reference 1 letter, Exelon Generation Company, LLC, (Exelon) requested a proposed change to modify the Technical Specifications (TS) to include the use of neutron absorbing spent fuel pool rack inserts for the purpose of criticality control in the spent fuel pools at Peach Bottom Atomic Power Station (PBAPS), Units 2 and 3. In References 2, 4, 6, and 8 the U.S. Nuclear Regulatory Commission requested additional information. References 3, 5, 7, and 9 were our responses to those requests, respectively. In Reference 10, the U.S. Nuclear Regulatory Commission requested additional information. Attached is our response to Request for Additional Information (RAI) 41.
U.S. Nuclear Regulatory Commission Response to Request for Additional Information License Amendment Request SpentFueiPooiRacklnserts August 15, 2012 Page 3 Exelon has reviewed the information supporting a finding of no significant hazards consideration and the environmental consideration provided to the U.S. Nuclear Regulatory Commission in R~ference 1. The additional information provided in this submittal does not affect the bases for concluding that the proposed license amendment does not involve a significant hazards consideration. In addition, the additional information provided in this submittal does not affect the bases for concluding that neither an environmental impact statement nor an environmental assessment needs to be prepared in connection with the proposed amendment.
There are no regulatory commitments contained in this submittal.
Should you have any questions concerning this letter, please contact Tom Loomis at (610) 765-5510.
I declare under penalty of perjury that the foregoing is true and correct. Executed on the 15th of August 2012.
Respectfully,
Attachment:
Response to Request for Additional Information cc: USNRC Region I, Regional Administrator USNRC Senior Resident Inspector, PBAPS USNRC Senior Project Manager, PBAPS R. R. Janati, Bureau of Radiation Protection S. T. Gray, State of Maryland
ATTACHMENT Response to Request for Additional Information
Response to Request for Additional Information License Amendment Request Attachment SpentFueiPooiRacklnserts Page 1 Question 41 : to Reference 1 provided NETCO Report NET-350-01, Revision 1, "2010 Badger Test Campaign at Peach Bottom Unit 2." Table 4-1 of NET-350-01, in part, showed the absorbed dose for a number of the Unit 2 SFP panels.
In Attachment 1 to Reference 2, Exelon provided the following response to RAI-29:
RACKLIFE 2.0 statepoints were run for both PBAPS units on April18, 2012 in accordance with station procedures that require a projection every 6 months.
RACKLIFE output is contained in Attachment 3 (11 RAI RACKLIFE 2.0 Statepoint Runs .. ). The spreadsheets provide the panel location, the predicted absorbed panel dose (RADs), and the predicted percent B4C loss (0/o).
The absorbed dose on some of the panels is shown as being less in Attachment 3 to Reference 2 (i.e., 2012 data) when compared to the values shown in Table 4-1 of NET-350-01 (i.e., 2010 data). Please explain this apparent discrepancy (i.e., absorbed doses decreasing with time). See table below for some examples.
Unit 2 Panel 2010 Absorbed Dose {Rads) 2012 Absorbed Dose {Rads)
(per Table 4-1 of NET-350-01) (per Attachment 3 of Ref. 2) 3E27 North 1.31E+10 7.95E+09 3E27 West 1.32E+10 8.73E+09 3E27 South 1.32E+10 6.84E+09 3E27 East 1.32E+10 8.79E+09 3D26 South 1.36E+10 5.99E+09 References
- 1. Exelon letter dated April 18, 2011, "Spent Fuel Pool Criticality Documents" (ADAMS Accession No. ML111120271)
- 2. Exelon letter dated June 21, 2012, "Response to Request for Additional Information- License Amendment Request for Use of Neutron Absorbing Inserts in Units 2 and 3 Spent Fuel Pool Storage Racks" (ADAMS Accession No. ML12188A094)
Response
The lower absorbed dose shown in the 2012 data when compared to the 2010 data is the result of the difference in the power sharing value used to create the two data sets. Attachment 4 to Reference 1 provided the NETCO Report NET-350-01, Revision 1, "201 0 Badger Test Campaign at Peach Bottom Unit 2." This report provided the Peach Bottom Atomic Power Station (PBAPS), Unit 2 BADGER testing results performed in January 2010. Table 4-1 summarized the BADGER test data for the 46 panels that were tested. The panels were selected based on RACKLIFE 2.0 data files as of 10/26/09. The RACKLIFE Assembly (.ASB) database file associated with this statepoint contained the End-of-Cycle (EOC) power sharing values (defined as the ratio of assembly power to core average assembly power) of 1.00 for several cycles (1 - 15) of PBAPS, Unit 2 fuel. The default value of 1.00 was used instead of the
Response to Request for Additional Information License Amendment Request Attachment SpentFueiPooiRacklnserts Page2 actual (i.e., calculated) power sharing value. In early 2011, the PBAPS, Unit 2 RACKLIFE model was revised to include actual power sharing values (beginning with Cycle 1) thus representing a more realistic dose. Accordingly, panels with an actual power sharing value less than 1.00 would result in a lower dose.
It should be noted that the panel dose is not used in the measurement or data processing in BADGER testing, but is only used as a guide in the selection of panels to be tested. Hence, the historical panel dose values in the BADGER test reports have no impact on the uncertainty of the BADGER/RACKLIFE methodology. The calculation of the BADGER and RACKLIFE uncertainties provided in RAI 28 uses the most recently updated RACKLIFE model, which includes the most accurate calculated panel dose, using actual power sharing values (based on actual plant data).
