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Category:Report
MONTHYEARML23181A1522023-06-30030 June 2023 Attachment 2 - LaSalle County Station Units 1 and 2, Pressure and Temperature Limits Report (PTLR) Up to 54 Effective Full-Power Years (Efpy), Revision 3 RS-23-066, Containment Post-Tensioning System Inservice Inspection Basis for Proposed Extension of Examination Interval Technical Report2023-05-0303 May 2023 Containment Post-Tensioning System Inservice Inspection Basis for Proposed Extension of Examination Interval Technical Report RA22-060, Regulatory Commitment Change Summary Report2022-11-30030 November 2022 Regulatory Commitment Change Summary Report ML22332A4552022-11-10010 November 2022 Attachment 7 - BWRVIP-135, Revision 4: BWR Vessel Internals Project Integrated Surveillance Program (ISP) Data Source Book and Plant Evaluations (Non-Proprietary Version) ML22332A4542022-11-10010 November 2022 Attachment 6 - LaSalle County Generating Station Units 1 and 2 Pressure and Temperature Limits Report (PTLR) for 54 Effective Full-Power Years (EFPY) (Non-Proprietary) NMP1L3469, Constellation Energy Company, LLC, Request for Use of Honeywell Mururoa V4F1 R Supplied Air Suits2022-06-30030 June 2022 Constellation Energy Company, LLC, Request for Use of Honeywell Mururoa V4F1 R Supplied Air Suits RS-22-018, Annual 10 CFR 50.46 Report of Emergency Core Cooling System Evaluation Model Changes and Errors for LaSalle County Station2022-02-22022 February 2022 Annual 10 CFR 50.46 Report of Emergency Core Cooling System Evaluation Model Changes and Errors for LaSalle County Station RS-21-115, Supplemental Information for License Amendment Request Regarding New Fuel Storage Vault and Spent Fuel Storage Pool Criticality Methodologies, with Proposed Changes to Technical Specifications 4.3.1 and 5.6.52021-11-0404 November 2021 Supplemental Information for License Amendment Request Regarding New Fuel Storage Vault and Spent Fuel Storage Pool Criticality Methodologies, with Proposed Changes to Technical Specifications 4.3.1 and 5.6.5 ML21265A5582021-06-30030 June 2021 Attachment 5: Appendix C, NEI 12-16 Criticality Analysis Checklist RA21-016, Netco Rack Insert 10-year Surveillance Report2021-04-15015 April 2021 Netco Rack Insert 10-year Surveillance Report RS-21-001, Revised Proposed Alternative to Utilize Code Cases N-878 and N-880 for Carbon Steel Piping2021-01-0404 January 2021 Revised Proposed Alternative to Utilize Code Cases N-878 and N-880 for Carbon Steel Piping ML20303A1752020-10-23023 October 2020 Proposed Relief Request from Section XI Repair/Replacement Documentation for Bolting Replacement of Pressure Retaining Bolting RS-20-133, Response to Request for Additional Information Re License Amendment Request to Renewed Facility Operating Licenses to Adopt 10 CFR 50.692020-10-16016 October 2020 Response to Request for Additional Information Re License Amendment Request to Renewed Facility Operating Licenses to Adopt 10 CFR 50.69 ML20085F8612020-03-24024 March 2020 Corrected Drawing for One-Line Electric Power Supply for Lasalle Hardened Containment Vent System (HCVS) Final Integrated Plan (FIP) RA20-015, Triennial Chlorine Survey Report2020-03-20020 March 2020 Triennial Chlorine Survey Report RS-20-024, Annual 10 CFR 50.46 Report of Emergency Core Cooling System Evaluation Model Changes and Errors2020-03-0909 March 2020 Annual 10 CFR 50.46 Report of Emergency Core Cooling System Evaluation Model Changes and Errors ML19228A0232019-08-15015 August 2019 Proposed Alternative to Utilize Code Case N-879 RA19-005, Regulatory Commitment Change Summary Report2019-01-14014 January 2019 Regulatory Commitment Change Summary Report RA18-110, Submittal of 2017 Regulatory Commitment Change Summary Report2018-12-27027 December 2018 Submittal of 2017 Regulatory Commitment Change Summary Report RS-18-131, Report of Full Compliance with Phase 1 and Phase 2 of June 6, 2013 Commission Order Modifying Licenses with Regard to Reliable Hardened Containment Vents Capable of Operation Under Severe Accident Conditions2018-12-14014 December 2018 Report of Full Compliance with Phase 1 and Phase 2 of June 6, 2013 Commission Order Modifying Licenses with Regard to Reliable Hardened Containment Vents Capable of Operation Under Severe Accident Conditions ML18024A2772018-08-16016 August 2018 Lessons Learned from Us NRC Response to the February 2017 LaSalle County Station Unit 2 High Pressure Core Spray Injection Valve Failure RA17-072, Post Accident Monitoring Report2017-08-0202 August 2017 Post Accident Monitoring Report RA17-069, Post Accident Monitoring Report2017-07-21021 July 2017 Post Accident Monitoring Report RS-17-025, Response to March 12, 2012, Request for Information Enclosure 2, Recommendation 2.1, Flooding, Required Response 3, Flooding Focused Evaluation Summary Submittal2017-03-0808 March 2017 Response to March 12, 2012, Request for Information Enclosure 2, Recommendation 2.1, Flooding, Required Response 3, Flooding Focused Evaluation Summary Submittal ML16355A4182017-01-11011 January 2017 Flood Hazard Mitigation Strategies Assessment RA16-092, Regulatory Commitment Change Summary Report2016-12-27027 December 2016 Regulatory Commitment Change Summary Report RS-16-182, Mitigating Strategies Flood Hazard Assessment (Msfha) Submittal2016-10-28028 October 2016 Mitigating Strategies Flood Hazard Assessment (Msfha) Submittal ML16305A2962016-10-27027 October 2016 0000-0163-8881-R0-NP, Revision 0, Exelon Nuclear LaSalle County Generating Station Units 1 & 2 Pool Swell Response. ML16167A5022016-09-0606 September 2016 UFSAR, Rev 22, Chap 09 Figures Part 12 of 14 - Redacted ML16167A4462016-09-0606 September 2016 MF7633 and MF7634, UFSAR, Las Fpr Rev._Redacted RS-16-125, Spent Fuel Pool Evaluation Supplemental Report, Response to NRC Request for Information Pursuant to 10 CFR 50.54(f) Regarding Recommendation 2.1 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident2016-08-31031 August 2016 Spent Fuel Pool Evaluation Supplemental Report, Response to NRC Request for Information Pursuant to 10 CFR 50.54(f) Regarding Recommendation 2.1 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident ML16224A7862016-08-26026 August 2016 Notice of Availability of the Final Plant-Specific Supplement 57 to the Generic Environmental Impact Statement for License Renewal of Nuclear Plants Regarding LaSalle County Station, Units 1 and 2 (TAC Nos. MF5567 and MF5568) ML16200A1562016-07-18018 July 2016 Report on the Safety Aspects of the License Renewal Application of the LaSalle County Station, Units 1 and 2 RS-15-300, Phase 1 (Updated) and Phase 2 Overall Integrated Plan in Response to June 6, 2013 Commission Order Modifying Licenses with Regard to Reliable Hardened Containment Vents Capable of Operation Under Severe Accident..2015-12-16016 December 2015 Phase 1 (Updated) and Phase 2 Overall Integrated Plan in Response to June 6, 2013 Commission Order Modifying Licenses with Regard to Reliable Hardened Containment Vents Capable of Operation Under Severe Accident.. RA15-075, Transmittal of the 2014 Regulatory Commitment Change Summary Report2015-11-20020 November 2015 Transmittal of the 2014 Regulatory Commitment Change Summary Report ML15107A1542015-04-21021 April 2015 Final Accident Sequence Precursor Analysis for the April 17, 2013, Dual Unit Loss of Offsite Power RS-15-004, County Station Introduction of Lead Use Assemblies2015-01-20020 January 2015 County Station Introduction of Lead Use Assemblies ML14352A1902014-12-18018 December 2014 7491-318563-HAO-1, Rev. 2, LaSalle Requested Documents RS-14-277, Proposed Alternative to Utilize Code Case N-513-4, Evaluation Criteria for Temporary Acceptance of Flaws in Moderate Energy Class 2 or 3 Piping Section XI, Division 12014-09-24024 September 2014 Proposed Alternative to Utilize Code Case N-513-4, Evaluation Criteria for Temporary Acceptance of Flaws in Moderate Energy Class 2 or 3 Piping Section XI, Division 1 ML14177A8592014-06-30030 June 2014 Staff Assessment of the Flooding Walkdown Report Supporting Implementation of Near-Term Task Force Recommendation 2.3 Related to the Fukushima DAI-ICHI Nuclear Power Plant Accident ML14176A9612014-06-24024 June 2014 Submittal of Non-Proprietary BWROG Technical Product, BWROGTP-11-006 - ECCS Containment Walkdown Procedure, Rev 1 (January 2011), as Formally Requested During the Public Meeting Held on April 30, 2014 ML14057A5492014-02-26026 February 2014 Supplemental Information Supporting License Amendment Request to Revise Reactor Coolant System (RCS) Pressure and Temperature (Pit) Curves RS-14-054, LaSalle, Unit 1, Supplemental Information Supporting License Amendment Request to Revise Reactor Coolant System (RCS) Pressure and Temperature (Pit) Curves2014-02-26026 February 2014 LaSalle, Unit 1, Supplemental Information Supporting License Amendment Request to Revise Reactor Coolant System (RCS) Pressure and Temperature (Pit) Curves ML14030A2232014-02-21021 February 2014 Interim Staff Evaluation Relating to Overall Integrated Plan in Response to Order EA-12-049 (Mitigation Strategies) ML14042A3252014-02-19019 February 2014 Mega-Tech Services, LLC Technical Evaluation Report Regarding the Overall Integrated Plan for LaSalle County Station, Units 1 and 2, TAC Nos.: MF1121 and MF1122 ML13358A3652013-12-20020 December 2013 Attachment 5: LaSalle County Station, Unit 1, Pressure/Temperature Limits Report ML13344A9822013-12-0909 December 2013 2012 Regulatory Commitment Change Summary Report ML13282A3502013-10-0404 October 2013 Final Report, Assessment of Wind Speeds Over the LaSalle County Station Ultimate Heat Sink. ML13192A4462013-05-21021 May 2013 Enclosure 1, Updated Transmittal # 1 (Annex a) Seismic Walkdown Report in Response to the 50.54(f) Information Request Regarding Fukushima Near-Term Task Force Recommendation 2.3: Seismic for the LaSalle County Station, Unit 2, Report No. R ML13008A2192013-01-31031 January 2013 U.S. Nuclear Regulatory Commission (NRC) Office of Investigations (01) Investigation; Summary of 01 Report No. 3-2010-034; NRC Inspection Report Conference Letter - Licensee 2023-06-30
[Table view] Category:Technical
MONTHYEARML23181A1522023-06-30030 June 2023 Attachment 2 - LaSalle County Station Units 1 and 2, Pressure and Temperature Limits Report (PTLR) Up to 54 Effective Full-Power Years (Efpy), Revision 3 RS-23-066, Containment Post-Tensioning System Inservice Inspection Basis for Proposed Extension of Examination Interval Technical Report2023-05-0303 May 2023 Containment Post-Tensioning System Inservice Inspection Basis for Proposed Extension of Examination Interval Technical Report ML22332A4552022-11-10010 November 2022 Attachment 7 - BWRVIP-135, Revision 4: BWR Vessel Internals Project Integrated Surveillance Program (ISP) Data Source Book and Plant Evaluations (Non-Proprietary Version) ML22332A4542022-11-10010 November 2022 Attachment 6 - LaSalle County Generating Station Units 1 and 2 Pressure and Temperature Limits Report (PTLR) for 54 Effective Full-Power Years (EFPY) (Non-Proprietary) NMP1L3469, Constellation Energy Company, LLC, Request for Use of Honeywell Mururoa V4F1 R Supplied Air Suits2022-06-30030 June 2022 Constellation Energy Company, LLC, Request for Use of Honeywell Mururoa V4F1 R Supplied Air Suits RS-22-018, Annual 10 CFR 50.46 Report of Emergency Core Cooling System Evaluation Model Changes and Errors for LaSalle County Station2022-02-22022 February 2022 Annual 10 CFR 50.46 Report of Emergency Core Cooling System Evaluation Model Changes and Errors for LaSalle County Station RS-21-115, Supplemental Information for License Amendment Request Regarding New Fuel Storage Vault and Spent Fuel Storage Pool Criticality Methodologies, with Proposed Changes to Technical Specifications 4.3.1 and 5.6.52021-11-0404 November 2021 Supplemental Information for License Amendment Request Regarding New Fuel Storage Vault and Spent Fuel Storage Pool Criticality Methodologies, with Proposed Changes to Technical Specifications 4.3.1 and 5.6.5 RS-21-001, Revised Proposed Alternative to Utilize Code Cases N-878 and N-880 for Carbon Steel Piping2021-01-0404 January 2021 Revised Proposed Alternative to Utilize Code Cases N-878 and N-880 for Carbon Steel Piping RS-20-133, Response to Request for Additional Information Re License Amendment Request to Renewed Facility Operating Licenses to Adopt 10 CFR 50.692020-10-16016 October 2020 Response to Request for Additional Information Re License Amendment Request to Renewed Facility Operating Licenses to Adopt 10 CFR 50.69 ML20085F8612020-03-24024 March 2020 Corrected Drawing for One-Line Electric Power Supply for Lasalle Hardened Containment Vent System (HCVS) Final Integrated Plan (FIP) ML19228A0232019-08-15015 August 2019 Proposed Alternative to Utilize Code Case N-879 RS-18-131, Report of Full Compliance with Phase 1 and Phase 2 of June 6, 2013 Commission Order Modifying Licenses with Regard to Reliable Hardened Containment Vents Capable of Operation Under Severe Accident Conditions2018-12-14014 December 2018 Report of Full Compliance with Phase 1 and Phase 2 of June 6, 2013 Commission Order Modifying Licenses with Regard to Reliable Hardened Containment Vents Capable of Operation Under Severe Accident Conditions ML16167A4462016-09-0606 September 2016 MF7633 and MF7634, UFSAR, Las Fpr Rev._Redacted ML16167A5022016-09-0606 September 2016 UFSAR, Rev 22, Chap 09 Figures Part 12 of 14 - Redacted ML15107A1542015-04-21021 April 2015 Final Accident Sequence Precursor Analysis for the April 17, 2013, Dual Unit Loss of Offsite Power RS-15-004, County Station Introduction of Lead Use Assemblies2015-01-20020 January 2015 County Station Introduction of Lead Use Assemblies RS-14-277, Proposed Alternative to Utilize Code Case N-513-4, Evaluation Criteria for Temporary Acceptance of Flaws in Moderate Energy Class 2 or 3 Piping Section XI, Division 12014-09-24024 September 2014 Proposed Alternative to Utilize Code Case N-513-4, Evaluation Criteria for Temporary Acceptance of Flaws in Moderate Energy Class 2 or 3 Piping Section XI, Division 1 ML14176A9612014-06-24024 June 2014 Submittal of Non-Proprietary BWROG Technical Product, BWROGTP-11-006 - ECCS Containment Walkdown Procedure, Rev 1 (January 2011), as Formally Requested During the Public Meeting Held on April 30, 2014 ML14057A5492014-02-26026 February 2014 Supplemental Information Supporting License Amendment Request to Revise Reactor Coolant System (RCS) Pressure and Temperature (Pit) Curves RS-14-054, LaSalle, Unit 1, Supplemental Information Supporting License Amendment Request to Revise Reactor Coolant System (RCS) Pressure and Temperature (Pit) Curves2014-02-26026 February 2014 LaSalle, Unit 1, Supplemental Information Supporting License Amendment Request to Revise Reactor Coolant System (RCS) Pressure and Temperature (Pit) Curves ML14030A2232014-02-21021 February 2014 Interim Staff Evaluation Relating to Overall Integrated Plan in Response to Order EA-12-049 (Mitigation Strategies) ML14042A3252014-02-19019 February 2014 Mega-Tech Services, LLC Technical Evaluation Report Regarding the Overall Integrated Plan for LaSalle County Station, Units 1 and 2, TAC Nos.: MF1121 and MF1122 ML13358A3652013-12-20020 December 2013 Attachment 5: LaSalle County Station, Unit 1, Pressure/Temperature Limits Report ML13282A3502013-10-0404 October 2013 Final Report, Assessment of Wind Speeds Over the LaSalle County Station Ultimate Heat Sink. ML13192A4462013-05-21021 May 2013 Enclosure 1, Updated Transmittal # 1 (Annex a) Seismic Walkdown Report in Response to the 50.54(f) Information Request Regarding Fukushima Near-Term Task Force Recommendation 2.3: Seismic for the LaSalle County Station, Unit 2, Report No. R ML13199A0412013-01-17017 January 2013 Attachment 11 - Netco Report NET-300054-01, Revision 0, Inspection and Testing of Fast Start Surveillance Coupons F22-F1 1 from the LaSalle County Unit 2 Station RS-11-067, Response to Request for Additional Information Regarding Unit 2 Spent Fuel Pool Storage Racks2011-04-18018 April 2011 Response to Request for Additional Information Regarding Unit 2 Spent Fuel Pool Storage Racks RS-10-007, 375636, Revision 0, Dewatered Resin Flammable Gas Generation Assessment, Appendix B2009-09-28028 September 2009 375636, Revision 0, Dewatered Resin Flammable Gas Generation Assessment, Appendix B RS-10-007, LaSalle Station, Units 1 and 2 - Irsf LAR Support Technical Report Supporting Engineering Change (EC) No. 375636 Type: Document Change Request (DCR) Subtype: Dsgn2009-09-28028 September 2009 LaSalle Station, Units 1 and 2 - Irsf LAR Support Technical Report Supporting Engineering Change (EC) No. 375636 Type: Document Change Request (DCR) Subtype: Dsgn ML1000703012009-09-28028 September 2009 Irsf LAR Support Technical Report Supporting Engineering Change (EC) No. 375636 Type: Document Change Request (DCR) Subtype: Dsgn ML13199A0402009-09-10010 September 2009 Attachment 10 - Netco Report NET-332-01, Revision 1, Inspection and Testing of Boral and Fast Start Surveillance Coupons from the LaSalle County Units 1 & 2 Stations RS-09-133, Attachment 6, LaSalle, Unit 2, Nuclear Power Station Spent Fuel Storage Pool Criticality Safety Analysis with Neutron Absorbing Inserts and Without Boraflex2009-08-31031 August 2009 Attachment 6, LaSalle, Unit 2, Nuclear Power Station Spent Fuel Storage Pool Criticality Safety Analysis with Neutron Absorbing Inserts and Without Boraflex RS-09-100, Additional Information Supporting the Request for a License Amendment to Revise Local Power Range Monitor Calibration Frequency2009-07-27027 July 2009 Additional Information Supporting the Request for a License Amendment to Revise Local Power Range Monitor Calibration Frequency RA09-012, Evaluation of the Water Spray System in the Overlab Area Fire Zone 4F32009-03-10010 March 2009 Evaluation of the Water Spray System in the Overlab Area Fire Zone 4F3 RS-09-037, Supplemental Information Concerning License Amendment to Allow Ganged Rod Drive Capability of the Rod Control Management System2009-03-0505 March 2009 Supplemental Information Concerning License Amendment to Allow Ganged Rod Drive Capability of the Rod Control Management System ML0900803852008-12-31031 December 2008 ANP-2789(NP), Revision 0, Atrium Tm 10XM Lead Test Assemblies for LaSalle Unit 2. RS-09-133, Attachment 5, Northeast Technology Corp. Report No. NET-259-03, Material Qualification of Alcan Composite for Spent Fuel Storage, Revision 52008-08-31031 August 2008 Attachment 5, Northeast Technology Corp. Report No. NET-259-03, Material Qualification of Alcan Composite for Spent Fuel Storage, Revision 5 ML0928102802008-08-31031 August 2008 Attachment 5, Northeast Technology Corp. Report No. NET-259-03, Material Qualification of Alcan Composite for Spent Fuel Storage, Revision 5 ML0821900132008-08-0707 August 2008 Monthly Operating Reports Second Quarter 2008 RS-08-091, Request for a License Amendment to Revise Local Power Range Monitor Calibration Frequency2008-07-25025 July 2008 Request for a License Amendment to Revise Local Power Range Monitor Calibration Frequency RS-08-063, Supplemental Information Concerning License Amendment to Allow Ganged Rod Drive Capability of the Rod Control Management System2008-05-13013 May 2008 Supplemental Information Concerning License Amendment to Allow Ganged Rod Drive Capability of the Rod Control Management System ML0634601312006-12-0707 December 2006 Attachment 11, Exelon/Amergen Response to the Request for Additional Information, EP-EAL-0611, Criteria for Choosing Containment Radiation Monitor Reading Indicative Loss of the RCS Barrier ML1011303712004-05-31031 May 2004 GE-NE-0000-0003-5526-02R1a, Rev, 1, Pressure-Temperature Curves for Exelon LaSalle Unit 1. ML0419501972004-05-31031 May 2004 GE-NE-0000-0003-5526-02R1a, Pressure-Temperature Curves for LaSalle Unit 1 and GE-NE-0000-0003-5526-01R1a, Pressure-Temperature Curves for LaSalle Unit 2, Non-proprietary ML0411400332004-03-0909 March 2004 Plant Specific ECCS Evaluation Changes - 10 CFR 50.46 Report ML0802902312004-02-12012 February 2004 Westinghouse Technical Bulletin: Information Regarding Recent Crossflow Ultrasonic Flow Measurement System Performance Observations, TB-04-4 RS-03-236, Transmittal of Non-Proprietary Version of Information Supporting Request for Amendment to Technical Specifications Section 5.6.5, Core Operating Limiits Report (Colr).2003-12-17017 December 2003 Transmittal of Non-Proprietary Version of Information Supporting Request for Amendment to Technical Specifications Section 5.6.5, Core Operating Limiits Report (Colr). RS-03-123, Response to Request for Additional Information to Support Request for Amendment to TS Table 3.3.5.1-1, Emergency Core Cooling System Instrumentation2003-06-26026 June 2003 Response to Request for Additional Information to Support Request for Amendment to TS Table 3.3.5.1-1, Emergency Core Cooling System Instrumentation ML0317703462003-06-17017 June 2003 Additional Information Regarding Notice of Proposed Amendments to Trust Agreement to Implement Assignment of Decommissioning Trust Funds for Exelon Generation Company, LLC RS-03-010, Supporting Documentation for Amendment to Technical Specifications Section 3.4.11, RCS Pressure and Temperature (P/T) Limits. Attachment 4, Table of Contents - Appendix F2003-01-31031 January 2003 Supporting Documentation for Amendment to Technical Specifications Section 3.4.11, RCS Pressure and Temperature (P/T) Limits. Attachment 4, Table of Contents - Appendix F 2023-06-30
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ATTACHMENT 11 NETCO Report NET-300054-01, Revision 0 "Inspection and Testing of Fast Start Surveillance Coupons F22-FI1 from the LaSalle County Unit 2 Station"
NET-300054-01I Inspection and Testing of Fast Start Surveillance Coupons F22-F1 I from the LaSalle County Unit 2 Station January 2013 Prepared for Exelon Generation under Contract No.: 00498758 by NETCO, a business unit of Curtiss-Wright Flow Control Service Corporation 731 Grant Avenue Lake Katrine, New York 12449 Review/Approval Record
NET-300054-01 Rev 0 Table of Contents 1.0 Intro d u ctio n ........................................................................................................... 1 2.0 Scope of Surveillance Coupon Testing ............................................................. 2 3.0 Test Results ....................................................................................................... 4 3.1 Visual Inspection .................................................................................... 4 3.2 Coupon Dimensions ............................................................................. 7 3.3 Coupon W eight ...................................................................................... 8 3 .4 De n s ity ....................................................................................................... 9 3.5 Neutron Attenuation Measurements and 10B Areal Density ................... 9 3.6 Corrosion Rates of the Fast Start Coupons ........................................ 10 4.0 Conclusions ................................................................................................... 11 5.0 References ..................................................................................................... 12 Appendix A: High Resolution Photographs of Fast Start Surveillance Coupons.
Appendix B: Procedure for Post-Test Characterization of the Fast Start Surveillance Coupons, SEP-259-13, 6/30/09.
Appendix C: NIST Traceable Calibration Certificates for the Gage Blocks, Standard Masses, and Applicable Instruments.
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NET-300054-01 Rev 0 1.0 Introduction Twelve (12) Rio Tinto ALCAN (RTA) Fast Start Surveillance coupons from LaSalle Unit 2 were shipped to NETCO's laboratory facilities at Pennsylvania State University.
These coupons were shipped in several installments from December 2009 to June 2012. Coupons F22-F11 were removed in descending numerically ordered pairs from the spent fuel pool at one half year increments. After the coupons were received, they were tested in accordance with SEP-259-13 (Appendix B).
The test results are contained in Section 3.0. NETCO's conclusions with respect to test results are contained in Section 4.0. Appendix B contains a copy of SEP-259-13, "Procedure for Post-Test Characterization of the Fast Start Surveillance Coupons," the procedure used to test the RTA composite coupons. Appendix C contains calibration documentation for all instruments, gage blocks, and mass blocks.
The coupons were in good overall condition when received by NETCO. No significant deterioration or degradation was evident. Comparison with corresponding measurements made prior to placement in the pool (pre-irradiation) confirm this observation. No surface pitting was observed. Some visible evidence of a light corrosion film was noted on some of the surfaces of the coupons.
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NET-300054-01 Rev 0 2.0 Scope of Surveillance Coupon Testing The coupons received by NETCO were first subjected to visual inspection and high resolution photography. This was followed by cleaning with demineralized water to remove transferable contamination.
The coupons were dried for 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> at 2200 F to remove surface moisture. After drying, the coupons were subject to:
" Dimension measurements
" Dry weight measurements
" Specific gravity and density measurements
- Neutron attenuation testing and 10B areal density measurements
" Acid cleaning and corrosion rate determination The locations for the dimension measurements and neutron attenuation test are shown in Figure 2-1. All testing was conducted in accordance with SEP-259-13, which is' included as Appendix B to this report.
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NET-300054-01 Rev 0 Wt W2
-W3
"-Attenuation Test LI L2 Figure 2-1: Locations for Fast Start Coupon Tests 3
NET-300054-01 Rev 0 3.0 Test Results This testing covers the twelve (12) most recent fast start coupons. The coupons were removed from the spent fuel pool in pairs. The data and measurement results for each pair of coupons have been averaged together for comparison over time. In all cases a negative represents a loss. Table 3-1 shows the time in the pool for each of the six pairs of coupons taken from the coupon tree that was initially placed into the spent fuel pool on 11/24/2008.
Table 3 In pool time for tested coupons Coupon IDs F21&22 F19&20 F17&18 F15&16 F13&14 F11&12 Pull Date 1217/2009 6/2512010 12/1512010 7111/2011 12/13/2011 6/1212012 Time in SFP [yr] 1.03 1.58 2.06 2.63 3.05 3.55 3.1 Visual Inspection In this section, the condition of the coupons is described. The front side is defined as the side of the coupon with the ID number on it. The top of the coupon is the short edge closest to the inscribed ID number. The coupons are unclad and are attached to each other by stainless links through the two holes in each coupon. The chain of coupons is attached to a head piece that fits into the upper lead-in of a storage cell in the pool.
The twelve (12) coupons are of similar nominal dimension and density. Nominal dimensions are 2" W x 4" L x 0.065" T. The nominal density is 2.7 g/cmA3. Weights vary due to slight differences in dimensions. Please see High Resolution Photographs in Appendix A for more details.
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NET-300054-01 Rev 0 Table 3 Visual Inspection F22 & F21 General: The ID F22 is inscribed in the upper right corner of the front side. The coupon is fully intact and is in pristine condition. There is no evidence of a light colored oxide film when viewed with the naked eye or under a microscope.
Coupon F22 is similar in appearance to coupon F21. Coupon F22 is darker and F22 less reflective than archive coupon FA4.
Front side: The background color of this side is a medium grey. Against this background there are some scratches that appear lighter.
Back side: The back side appears similar to the front with different scratch patterns.
General: The inscription F21 appears in the upper right corner of the front side.
The coupon is intact and is in pristine condition. To the naked eye there is no evidence of a corrosion film. F21 appears slightly darker and reflects less light than archive material not exposed to the pool water. Examination under a F21 microscope showed no evidence of a light colored oxide. Side-by-side microscopic examination indicates the archive coupon is more reflective than F21.
Front Side: The color of this side is uniform except where there are scratches where the color is lighter.
Back Side: The appearance of the back side is similar to the front side.
Table 3 Visual Inspection F20 & F19 General: The coupon ID F20 is inscribed in the upper right corner of the front side. The color of the coupon has darkened as a result of the time in the spent fuel pool. The coupon is slightly warped symmetrically along the longest axis, more so than F19.
F20 Front side: There are some scratches on the front side where the exposed area is similar to mill finish aluminum.
Back side: Similar in appearance to the front side. There are a few more scratches on the backside; otherwise there are no other anomalies.
General: The coupon ID number F19 is inscribed in the upper right corner of the front side. Color of the coupon has darkened after 1.5 years in the spent fuel pool. The coupon is slightly warped symmetrically along its longest axis.
Front side: There are numerous scratches where the surface appears shiny, F19 not unlike mill finish aluminum. Scratching is likely to have occurred when the coupon string was removed to remove the coupon. There are no other anomalies.
Back side: Color is similar to front side; there are fewer scratches on the back side.
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NET-300054-01 Rev 0 Table 3 Visual Inspection F18 & F17 the F18 Coupon ID F18 is inscribed in the upper right corner. Appearance is about same as F12.
the F17 Coupon ID F17 is inscribed in the upper right corner. Appearance is about same as F12.
Table 3 Visual Inspection F16 & F15 F16 Coupon ID F16 is inscribed in the upper right corner. Appearance is about the same as F12. There is a rust colored pit above the lower link hole on front side.
the FIS Coupon ID F15 is inscribed in the upper right corner. Appearance is about same as F12. There is a dark spot on the back side midway up the right edge Table 3 Visual Inspection F14 & F1 3 F14 Coupon ID F14 is inscribed in the upper right comer. Appearance is about the same as F12.
F13 Coupon ID F13 is inscribed in the upper right corner. Appearance is about the same as F12.
Table 3 Visual Inspection F12 & F1 I The coupon ID is F12 is inscribed in upper right comer of front side. Color of all surfaces is grey with randomly distributed scratches.
The coupon ID is Fll is inscribed in upper right corner below the top edge. The color of the coupon is a more or less uniform grey color with random scratches Fl1 on the surfaces. The back side is similar in appearance. Hematite rust spots in the lower left quadrant. It surrounds a relatively large pit which looks like it came from a carbon steel tool chain.
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NET-300054-01 Rev 0 3.2 Coupon Dimensions The coupon dimensions are the length, the width, and the thickness. These dimensions were taken in several locations (as shown in figure 2-1) and for each coupon pair averaged together. The differences between the pre-irradiated and post-irradiated dimensions are then compared for each coupon group. Table 3-8 displays the changes in dimensional measurements for the coupon pairs over the approximately 3.5 years of SFP exposure time. Figure 3-1 is a graphical representation of these values.
Changes in the dimensional measurements were minimal. Since the changes are small and vary between losses and gains with no particular pattern, it is reasonable to assume that for lengths and widths this variance is likely due to roughness of the coupon edges and slight variation in the location at which the measurements were taken. The variation in the change of the thickness is due to the use of the nominal "as rolled" material thickness for the pre-irradiated thickness measurement. These changes in the thickness thus represent variation in rolling, and show that there was no significant material loss.
Table 3-8 Coupons Dimensions Coupon IDs F21&22 F19&20 F17&18 F15&16 F13&14 F11&12 Pull Date 12/7/2009 6/25/2010 12/15/2010 7/11/2011 12/13/2011 6/12/2012 Time in SFP [yr] 1.03 1.58 2.06 2.63 3.05 3.55 Thickness Change [in] 0.003 0.001 0.000 -0.001 0.000 0.000 Length Change [in] 0.000 -0.004 -0.001 -0.008 0.000 0.002 Width Change [in] 0.000 0.003 0.000 -0.001 0.007 0.001 7
NET-300054-01 Rev 0 Dimensional Changes 00O8 0006
- 0004 0.002 0 OD,--*-- Length Change (in]
-O000200 O0 0',00, 1.00 . 3.50 4.0-0 -WihidhCChange [in)
-0004 - Thickness Chaige [in1
-0006
-0008
-0010 Time In Pool [years]
Figure 3 Graphical display of pair averaged dimensional changes over SFP exposure time.
3.3 Coupon Weight Table 3-9 displays the changes in the weight measurements for each pair of coupons over the approximately 3.5 years of SFP exposure time. This difference between the weights from pre-irradiated to post-irradiated are compared for each coupon pair.
Figure 3-2 is a graphical representation of this comparison.
Since the fast start coupons are fully dense (negligible porosity), they were dried for 1 hour1.157407e-5 days <br />2.777778e-4 hours <br />1.653439e-6 weeks <br />3.805e-7 months <br /> at 2200 F to remove surface moisture. Coupons were then washed in Nitric Acid to remove only the corrosion products and leave the base metal undamaged. The weight was then again taken. This "clean weight" is the weight measurement used to compare to pre-irradiation weight. There has not been a large loss in coupon weight, but as expected the coupon weight loss increases with the duration of the test.
Table 3-9 Coupon Weights Coupon IDs F21&22 F19&20 F17&18 F15&16 F13&14 F11&12 Pull Date 12/7/2009 6/25/2010 12/15/2010 7/11/2011 12/13/2011 6/12/2012 Time in Pool [yr] 1.03 1.58 2.06 2.63 3.05 3.55 Weight Change [g] -0.011 -0.017 -0.030 -0.036 -0.026 -0.064 8
NET-300054-01 Rev 0 Weight Change [g]
0.000 0.60 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00
-0.010
-0.020
-0.030 6
,1-0.040
-0.050
-0.060
-0.070 Time in Pool (years)
Figure 3 Graphical display of the pair averaged weight change for each coupon pair over SFP exposure time.
3.4 Density The results of the density measurements for the coupons are summarized in Table 3-
- 10. Changes in the densities of the coupons consisted of the nominal batch density compared with the post irradiation values. Significant increases in the reported densities are most likely attributed to use of the nominal batch density in the comparison.
Table 3-10 Coupon Densities Coupon IDs F21&22 F19&20 F17&18 F15&16 F13&14 F11&12 Pull Date 12/7/2009 6/25/2010 12/15/2010 7/11/2011 Time in Pool [yr] 1.03 1.58 2.06 2.63 3.05 3.55 Density Change [g/cmA3] -0.001 0.005 0.049 0.041 0.039 -0.002 9
NET-300054-01 Rev 0 3.5 Neutron Attenuation Measurements and 10B Areal Density The boron-10 areal density of the coupon was measured via neutron attenuation testing. The test was conducted in the Neutron Beam Laboratory at the Pennsylvania State University using the PSU Triga Reactor as a source of thermal neutrons. Table 3-11 contains the change in the pre-irradiated 10B areal density measurements from to post-irradiated 1°B areal density measurements The Boron-10 areal density of the fast start coupons was measured at the geometric center of each fast start coupon. There is no loss in boron-1 0 areal density for any individual coupon.
Table 3-11 Coupon Boron-1 0 Areal Density Coupon IDs F21&22 F19&20 F17&18 F15&16 F13&14 F11&12 Pull Date 12/7/2009 6/25/2010 12/15/2010 7/11/2011 12/13/2011 6/12/2012 Time in Pool [yr] 1.03 1.58 2.06 2.63 3.05 3.55 AD Change [g/cmA2] 0.0008 0.0002 0.0002 0.0003 0.0003 0.0004 3.6 Corrosion Rates of the Fast Start Coupons The corrosion rates for all coupons were calculated based on ASTM-G31-72 (Reapproved 2004) [1] and the weight loss data in Table 3-9. The corrosion rates
[mils/year] over the exposure time of 3.5 years are shown in Figure 3-3 and listed in Table 3-12.
These corrosion rates are extremely low and confirm the visual observation that all coupons were essentially devoid of corrosion products. Though the corrosion rate varies, it varies only slightly and is consistent over the period of SFP exposure. The average corrosion rate of -0.018 mils/yr is lower than the corrosion rate as determined from accelerated corrosion testing at 1950 F, performed during RTA material qualification testing NET-259, RTA Material Qualification [2].
10
NET-300054-01 Rev 0 Table 3-12 Coupon Corrosion Rates Coupon IDs F21&22 F19&20 F17&18 F15&16 F13&14 F11&12 I I Pull Date 12/7/2009 6/25/2010 12/15/2010 7/11/2011 12/13/2011 6/12/2012 Time in Pool [yr] 1.03 1.58 2.06 2.63 3.05 3.55 Corrosion Rate [mils/yr] -0.014 -0.015 -0.020 -0.018 -0.012 -0,025 Corrosion Rate [mils/yr]
0.000 0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00
-0.005
' -0.010
- -0.015 E
5 -0.020
-0.025
-0.030 Time In Pool [years]
Figure 3-3 Graphical display of coupon corrosion rates over the SFP exposure time.
11
NET-300054-01 Rev 0 4.0 Conclusions Each of the twelve fast start coupons from the LaSalle Unit 2 SFP exhibited excellent corrosion performance. The coupons were removed in descending numerically ordered pairs at one half year increments from 12/07/2009 to 6/12/2012. All coupons show a low corrosion rate, minimal changes in dimensional measurements, coupon weights, and density measurements. Most importantly all coupons showed no measurable loss in boron-10 areal density. Overall, fast start coupons F22-Fll showed minor to no evidence of corrosion or other potentially adverse effects as a consequence of SFP residence.
12
NET-300054-01 Rev 0 5.0 References
- 1) ASTM G31-72 (Reapproved 2004) Standard Practice For Laboratory Immersion Corrosion Testing of Metals.
- 2) "Material Qualification of ALCAN Composite for Spent Fuel Storage," NET-259-03, Rev 5, Northeast Technology Corp., 7/30/09.
13
NET-300054-01 Rev 0 Appendix A High Resolution Photographs of Fast Start Surveillance Coupons
NET-300054-01 Rev 0 Photo 1- F22 Front View
NET-300054-01 Rev 0 f4 Photo 2- F22 Back View
NET-300054-01 Rev 0 4'rV Q* mN 2i Photo 3- F21 Front View
NET-300054-01 Rev 0 i
Photo 4- F21 Back View
NET-300054-01 Rev 0 Photo 5- F22 & F21 comparison with archive
NET-300054-01 Rev 0 Photo 6- F20 Front View
NET-300054-01 Rev 0 Photo 7- F20 Back View
NET-300054-01 Rev 0 Photo 8- F19 Front View
NET-300054-01 Rev 0 Photo 9- F19 Back View
NET-300054-01 Rev 0 Photo 10- F22 & F21 comparison with archive
NET-300054-01 Rev 0 Photo 11- F18 & F17 Front View
NET-300054-01 Rev 0 Photo 12- F18 & F17 Back View
NET-300054-01 Rev 0 Photo 13- F16 & F15 Front View
NET-300054-01 Rev 0 Photo 14- F16 & F15 Back View
NET-300054-01 Rev 0 Photo 15- F14 & F13 Front View
NET-300054-01 Rev 0 Photo 15- F14 & F13 Back View
NET-300054-01 Rev 0 Photo 16- F12 & Fll Front View
NET-300054-01 Rev 0 Photo 17- F12 & Fl1 Back View
NET-300054-01 Rev 0 Appendix B Procedure for Post-Test Characterization of the Fast Start Surveillance Coupons, SEP-259-13, 6/30/09
NET-300054-01 Rev 0 Appendix C Certification of Calibration for Gage Blocks and Standard Masses