Letter Sequence Other |
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TAC:MD9990, Clarify Application of Setpoint Methodology for LSSS Functions (Approved, Closed) |
Initiation
- Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, Request, 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
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
- Meeting, Meeting, Meeting, Meeting, Meeting, Meeting
Results
Other: L-MT-08-091, Calculation 0801040.301, Steam Dryer Outer Hood Submodel Analysis., L-MT-09-002, Response to NRC Probabilistic Risk Assessment (PRA) Branch Requests for Additional Information (Rais) Dated December 5, 2008, L-MT-09-003, Response to NRC Environmental Branch Requests for Additional Information (Rais) Dated December 18, 2008, L-MT-09-004, Enclosure 1 (Continued) to L-MT-09-004, NSPM Response to Containment & Ventilation Branch RAI Number 2, Copy of MNGP Appr T0406 Data Transmittal Pages 1 of 538 Through Pages 538 of 538, L-MT-09-026, Calculation 0000-0081-6958 MNGP-PRNMS-APRM Calc-2008-NP, Rev. 1, Average Power Range Monitor Selected Prnm Licensing Setpoints - EPU Operation (Numac), L-MT-09-027, Extended Power Uprate: Response to Instrumentation and Controls Branch RAI No. 3 Dated April 6, 2009, L-MT-09-044, Extended Power Uprate: Response to NRC Mechanical and Civil Engineering Review Branch (Emcb) Requests for Additional Information (Rais) Dated March 28, 2009, L-MT-09-049, Drawing C.5-2007, Revision 15, Failure to Scram, L-MT-09-073, Extended Power Uprate: Response to NRC Containment and Ventilation Review Branch (Scvb) Requests for Additional Information (Rais) Dated July 2, 2009 and July 14, 2009, L-MT-09-083, Extended Power Uprate: Limit Curves Requested by the Mechanical and Civil Review Branch (Emcb) Associated with Requests for Additional Information (Rais) Dated March 20, 2009, L-MT-09-088, Extended Power Uprate: Revision to Clarify Text in Enclosures 5 and 7 of L-MT-08-052, L-MT-09-097, Extended Power Uprate: Acknowledgement of NRC Review Delay, L-MT-10-025, Extended Power Uprate (Epu): Response to NRC-NSPM February 25, 2010 Conference Call, L-MT-10-072, Extended Power Uprate: Updates to Docketed Information, L-MT-11-044, Uprate (Epu): Update on EPU Commitments, L-MT-12-056, WCAP-17549-NP, Rev. 0, Monticello Replacement Steam Dryer Structural Evaluation for High-Cycle Acoustic Loads Using ACE, L-MT-12-090, Westinghouse, LTR-A&SA-12-8, Rev. 1, Attachment B, Recommendations for Inspections of the Monticello Replacement Steam Dryer., L-MT-12-114, Drawing C.5-2007, Rev. 17, Failure to Scram, L-MT-13-020, Enclosure 1 - Responses to the Gap Analysis, L-MT-13-029, Enclosure 14 to L-MT-13-029 - WCAP-17716-NP, Revision 0, Benchmarking of the Acoustic Circuit Enhanced Revision 2.0 for the Monticello Steam Dryer Replacement Project., L-MT-13-091, WCAP-17716-NP, Revision 1 - Benchmarking of the Acoustic Circuit Enhanced Revision 2.0 for the Monticello Steam Dryer Replacement Project, Enclosure 14, L-MT-13-092, Extended Power Uprate (Epu): Completion of EPU Commitments, Proposed License Conditions and Revised Power Ascension Test Plan, L-MT-13-096, GE-MNGP-AEP-3304R1, Enclosure 4, NEDC-33435 Corrected Pages, L-MT-13-126, Enclosure 3, GE-MNGP-AEP-3306, Enclosure 2 GEH Response to Mella+ Eicb RAI and Affidavit, L-MT-14-023, Maximum Extended Load Line Limit Analysis Plus: Technical Specification Clarifications, L-MT-15-074, Enclosure 7, WCAP-18604-NP, Revision 0, Monticello EPU Main Steam Line Strain Data Evaluation Report., L-MT-16-017, Revised Commitment to Reconcile Analysis of Bypass Voiding for Transition to Areva Analysis Methodology, L-MT-16-071, Submittal of 2016 Annual Report of Changes in Emergency Core Cooling System Evaluation Models Pursuant to 10 CFR 50.46, ML083230111, ML083400402, ML083500575, ML083570610, ML083590127, ML090710680, ML090710683, ML090710684, ML091120578, ML091140470, ML091410121, ML091410122, ML091410123, ML091410124, ML091760769, ML092290250, ML092810554, ML093160816, ML093220925, ML093220964, ML093620024, ML100280558... further results
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MONTHYEARML0907106832008-02-17017 February 2008 Enclosure 1 (Continued) to L-MT-09-004, NSPM Response to Containment & Ventilation Branch RAI Number 2, Attachment 1-1g Through End of Encl. 1 Project stage: Other ML13064A4352008-03-20020 March 2008 CA-95-075, Main Steam Line High Flow Setpoint, Attachment 4 Project stage: Other ML0914101242008-08-11011 August 2008 Monticello - Calculation CA-08-050, Rev. 0, Instrument Setpoint Calculation - Average Power Range Monitor (APRM) Non-Flow Eiased Prnm Setpoints for Cl Tp and EPU Project stage: Other L-MT-08-091, Calculation 0801040.301, Steam Dryer Outer Hood Submodel Analysis.2008-10-31031 October 2008 Calculation 0801040.301, Steam Dryer Outer Hood Submodel Analysis. Project stage: Other ML0832301122008-10-31031 October 2008 NEDC-33322-NP, Revision 3, Monticello Nuclear Generating Plant, Safety Analysis Report, Constant Pressure Power Uprate. Project stage: Request ML0832301112008-11-0505 November 2008 Monticello Nuclear Generating Plant, License Amendment Request: Extended Power Uprate Project stage: Other ML0832301142008-11-0505 November 2008 Monticello Nuclear Generating Plant, Steam Dryer Dynamic Stress Evaluation. Project stage: Request ML0834003662008-12-0202 December 2008 Extended Power Uprate Acceptance Review Questions on Probabilistic Risk Assessment Issues Project stage: Acceptance Review ML0834004022008-12-0505 December 2008 Extended Power Uprate - Monticello - Request to Supplement the Application in the Probabilistic Risk Assessment Area Project stage: Other ML0835000992008-12-11011 December 2008 Monticello Extended Power Uprate (Usnrc TAC MD9990): Acceptance Review Supplement Regarding Steam Dryer Outer Hood Submodel Analysis Project stage: Supplement ML0835303022008-12-16016 December 2008 Draft Request for Additional Information, Environmental Issues of EPU Application Project stage: Draft RAI ML0936200242008-12-18018 December 2008 Report 0800760.401, Rev. 1, Flaw Evaluation and Vibration Assessment of Existing Monticello Steam Dryer Flaws for Extended Power Uprate. Project stage: Other ML0835005752008-12-18018 December 2008 Letter Finding 11/5/08 Application for Amendment Acceptable for Review Project stage: Other ML0835309982008-12-18018 December 2008 EPU Application - Additional RAI Question Regarding an Environmental Issue Project stage: RAI ML0835310022008-12-18018 December 2008 Proposed Eou Amendment - Revised RAI Re. Containment Analysis Project stage: RAI ML0914101222008-12-18018 December 2008 Monticello - Calculation CA-95-075, Revision 1, Main Steam Line High Flow Setpoint Project stage: Other ML0914101212008-12-19019 December 2008 Monticello - Calculation CA-95-073, Revision 4, Reactor Low Water Level SCRAM Setpoint Project stage: Other ML0835901272009-01-14014 January 2009 Letter Conveying Determination That Enclosure 5 of 11/5/08 Application for EPU Amendment Contains Proprietary Information and Withheld from Public Disclosure Project stage: Other ML0835706102009-01-26026 January 2009 Letter Conveying Determination That Enclosure 11 of 11/5/08 Application for EPU Amendment Contains Proprietary Information and Is Withheld from Public Disclosure Project stage: Other L-MT-09-003, Response to NRC Environmental Branch Requests for Additional Information (Rais) Dated December 18, 20082009-01-29029 January 2009 Response to NRC Environmental Branch Requests for Additional Information (Rais) Dated December 18, 2008 Project stage: Other L-MT-09-005, Revision to Attachment 1 of Enclosure 17 of MNGP License Amendment Request for Extended Power Uprate2009-02-0404 February 2009 Revision to Attachment 1 of Enclosure 17 of MNGP License Amendment Request for Extended Power Uprate Project stage: Request L-MT-09-002, Response to NRC Probabilistic Risk Assessment (PRA) Branch Requests for Additional Information (Rais) Dated December 5, 20082009-02-0404 February 2009 Response to NRC Probabilistic Risk Assessment (PRA) Branch Requests for Additional Information (Rais) Dated December 5, 2008 Project stage: Other ML0904204852009-02-11011 February 2009 Draft RAI from Materials Engineering Re. Proposed Extended Power Uprate Amendment Project stage: Draft RAI ML0907106792009-02-17017 February 2009 Monticello, Response to NRC Containment & Ventilation Branch Request for Additional Information (Rals) Dated December 18, 2008 Project stage: Request ML0907106802009-02-17017 February 2009 Monticello, Enclosure 1 to L-MT-09-004, NSPM Response to Containment & Ventilation Branch RAI Number 1 Dated December 18, 2008, Cover Through Copy of MNGP Appr T0406 Data Transmittal Page 424 of 424 Project stage: Other L-MT-09-004, Enclosure 1 (Continued) to L-MT-09-004, NSPM Response to Containment & Ventilation Branch RAI Number 2, Copy of MNGP Appr T0406 Data Transmittal Pages 1 of 538 Through Pages 538 of 5382009-02-17017 February 2009 Enclosure 1 (Continued) to L-MT-09-004, NSPM Response to Containment & Ventilation Branch RAI Number 2, Copy of MNGP Appr T0406 Data Transmittal Pages 1 of 538 Through Pages 538 of 538 Project stage: Other ML0907106842009-02-17017 February 2009 Enclosures 2 - 4: NSPM Response to Containment & Ventilation Branch RAI Numbers 2, 3 and 4 Dated December 18, 2008 Project stage: Other L-MT-09-018, Response to NRC Steam Generator Tube Integrity & Chemical Engineering Branch Request for Additional Information (RAI) Dated February 11, 20092009-02-24024 February 2009 Response to NRC Steam Generator Tube Integrity & Chemical Engineering Branch Request for Additional Information (RAI) Dated February 11, 2009 Project stage: Request ML0907100912009-03-11011 March 2009 Conveying Draft RAI Questions from the Instrumentation and Controls Branch Regarding the Proposed Extended Power Uprate Amendment Project stage: Draft RAI ML0907200572009-03-12012 March 2009 Conveys Draft RAI Regarding Fire Protection for the Proposed Extended Power Uprate Amendment Project stage: Draft RAI ML0907800062009-03-18018 March 2009 Draft RAI from Probabilistic Risk Assessment Licensing Branch on the Proposed Extended Power Uprate Amendment Project stage: Draft RAI ML0907800042009-03-18018 March 2009 Conveys Draft RAI by the PRA Licensing Branch on the Proposed EPU Amendment Project stage: Draft RAI ML0907809032009-03-19019 March 2009 Conveys Draft RAI Provided by the Containment and Ventilation Branch on the Proposed Extended Power Uprate Amendment Project stage: Draft RAI ML0907809092009-03-19019 March 2009 RAI from the Containment and Ventilation Branch the Proposed Extended Power Uprate Amendment Project stage: RAI L-MT-09-017, Extended Power Uprate: Response to NRC Reactor Systems Branch & Nuclear Performance & Code Review Branch Request for Additional Information (RAI) Dated January 16, 20092009-03-19019 March 2009 Extended Power Uprate: Response to NRC Reactor Systems Branch & Nuclear Performance & Code Review Branch Request for Additional Information (RAI) Dated January 16, 2009 Project stage: Request ML0908200312009-03-20020 March 2009 Draft RAI Re. Health Physics Issues for the Proposed Extended Power Uprate Amendment Project stage: Draft RAI ML0908200992009-03-23023 March 2009 Draft RAI from the Balance of Plant Branch Re the Proposed Amendment on Extended Power Uprate Project stage: Draft RAI ML0908800022009-03-28028 March 2009 Second Portion of Draft RAI from the Mechanical and Civil Engineering Branch Regarding the Proposed Extended Power Uprate Amendment Project stage: Draft RAI ML0908800032009-03-28028 March 2009 Draft RAI from the Electrical Engineering Branch Re. the Proposed Extended Power Uprate Amendment for Monticello Project stage: Draft RAI ML0908800012009-03-29029 March 2009 Additional Draft RAI Questions from the Containment and Ventilation Branch Proposed EPU Amendment for Monticello Project stage: Draft RAI ML0910300212009-04-0606 April 2009 Draft RAI Question from Instrumentation and Controls Branch Re. Proposed EPU Amendment Project stage: Draft RAI ML0910300172009-04-0606 April 2009 Conveys an Additional EPU Draft RAI Question from Instrumentation and Controls Branch Project stage: Draft RAI L-MT-09-025, Extended Power Uprate: Response to NRC Reactor Systems Branch and Nuclear Performance & Code Review Branch Request for Additional Information (RAI) Dated February 23, 20092009-04-22022 April 2009 Extended Power Uprate: Response to NRC Reactor Systems Branch and Nuclear Performance & Code Review Branch Request for Additional Information (RAI) Dated February 23, 2009 Project stage: Request ML0911205782009-04-22022 April 2009 Request for Audit of Implementation of Long-Term Stability Solution Project stage: Other ML0911902092009-04-29029 April 2009 Transmit Revised Draft RAI from the Probabilistic Risk Assessment Licensing Branch on the Proposed Extended Power Uprate Amendment Project stage: Draft RAI ML0914101232009-05-0606 May 2009 Monticello - Calculation 96-054, Rev 5, Turbine Stop Valve Closure/Generator Load Reject Scram Bypass Project stage: Other ML0911404702009-05-0707 May 2009 Determination That Submitted Information Can Be Withheld from Public Disclosure Project stage: Other ML0914101202009-05-13013 May 2009 Monticello - Extended Power Uprate: Response to NRC Instrumentation & Controls Branch Request for Additional Information Dated March 11, 2009, and April 6, 2009, and Fire Protection Branch RAIs Dated March 12, 2009 Project stage: Request L-MT-09-045, Extended Power Uprate: Response to NRC Electrical Engineering Review Branch (Eeeb) Request for Additional Information (RAI) Dated March 28, 20092009-05-26026 May 2009 Extended Power Uprate: Response to NRC Electrical Engineering Review Branch (Eeeb) Request for Additional Information (RAI) Dated March 28, 2009 Project stage: Request L-MT-09-029, Extended Power Uprate: Response to NRC Probabilistic Risk Assessment (PRA) Licensing Branch Request for Additional Information (RAI) Dated April 29, 20092009-05-29029 May 2009 Extended Power Uprate: Response to NRC Probabilistic Risk Assessment (PRA) Licensing Branch Request for Additional Information (RAI) Dated April 29, 2009 Project stage: Request 2009-02-24
[Table View] |
WCAP-17549-NP, Revision 2 - Monticello Replacement Steam Dryer Structural Evaluation for High-Cycle Acoustic Loads Using ACE, Enclosure 13ML13248A348 |
Person / Time |
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Site: |
Monticello ![Xcel Energy icon.png](/w/images/6/6c/Xcel_Energy_icon.png) |
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Issue date: |
08/29/2013 |
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From: |
Han Y, Plonczak G W, Rajakumar C, Salehzadeh A, Suddaby D A, Theuret R C, Wellstein L F Westinghouse |
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To: |
Office of Nuclear Reactor Regulation |
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References |
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L-MT-13-091, TAC MD9990 WCAP-17549-NP, Rev 2 |
Download: ML13248A348 (88) |
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Category:Report
MONTHYEARML23172A1112023-06-21021 June 2023 SLRA - Requests for Confirmation of Information - Set 1 L-MT-22-024, Response to a Request for Additional Information for the Monticello Nuclear Generating Plant Related to the Amendment to Adopt Advanced Framatome Methodologies2022-06-0606 June 2022 Response to a Request for Additional Information for the Monticello Nuclear Generating Plant Related to the Amendment to Adopt Advanced Framatome Methodologies L-MT-22-004, Technical Specification 5.6.4 Post Accident Monitoring Report2022-01-20020 January 2022 Technical Specification 5.6.4 Post Accident Monitoring Report ML21211A5962021-06-30030 June 2021 Attachments 9a, B, 10a, B, 11a, 12a and 13a and 13b, Including ANP-3933NP, Revision 0, Monticello ATWS-I Evaluation for Atrium 11 Fuel, Affidavit L-MT-21-016, Nuclear Material Transaction Report2021-03-25025 March 2021 Nuclear Material Transaction Report L-MT-20-002, 10 CFR 50.55a(z)(1) Request RR-015: Proposed Alternative for Examination of ASME Section XI, Examination Category B-G-1, Item Number B6.40, Threads in Flange2020-01-31031 January 2020 10 CFR 50.55a(z)(1) Request RR-015: Proposed Alternative for Examination of ASME Section XI, Examination Category B-G-1, Item Number B6.40, Threads in Flange ML19308A0562019-10-0808 October 2019 Enclosure 1 - Notification of Changes to the Emergency Response Data System (ERDS) L-MT-19-020, 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 ..2019-04-25025 April 2019 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 .. L-MT-17-060, Steam Dryer Visual Inspection Report2017-08-10010 August 2017 Steam Dryer Visual Inspection Report L-MT-17-055, Seismic Mitigating Strategies Assessment (MSA) Report for the Reevaluated Seismic Hazard Information - NEI 12-06, Revision 4, Appendix H, H.4.4, Path 42017-07-26026 July 2017 Seismic Mitigating Strategies Assessment (MSA) Report for the Reevaluated Seismic Hazard Information - NEI 12-06, Revision 4, Appendix H, H.4.4, Path 4 ML17088A5272017-03-31031 March 2017 NSIR Dpcp Confirmatory Review Report, 10 CFR 50.54(p)(2) Changes to the Security Plan, Revision 16, Northern States Power Company, Monticello Nuclear Generating Plant L-MT-17-015, Mitigating Strategies Flood Hazard Assessment (MSA) Submittal2017-03-28028 March 2017 Mitigating Strategies Flood Hazard Assessment (MSA) Submittal ML16302A2462016-10-28028 October 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 Fukushima.. ML16221A2752016-07-31031 July 2016 ANP-3274NP, Revision 2, Analytical Methods for Monticello ATWS-I. L-MT-16-037, ANP-3284NP, Revision 1, Results of Analysis and Benchmarking of Methods for Monticello ATWS-I.2016-07-31031 July 2016 ANP-3284NP, Revision 1, Results of Analysis and Benchmarking of Methods for Monticello ATWS-I. L-MT-16-010, Enclosure 2 Areva Report ANP-3295NP, Rev. 3, Monticello Licensing Analysis for EFW (Epu/Mella+).2016-02-29029 February 2016 Enclosure 2 Areva Report ANP-3295NP, Rev. 3, Monticello Licensing Analysis for EFW (Epu/Mella+). ML15274A4742015-09-29029 September 2015 Enclosure 4, Engineering Evaluation, EC 25987, Calculation Framework for the Extended Flow Window Stability (Efws) Setpoints L-MT-15-065, Enclosure 8, Areva Report ANP-3424NP, Revision 1 to Areva Responses to RAI from Scvb on MNGP EFW LAR (Non-Proprietary) and Enclosure 9, Areva Affidavits2015-09-29029 September 2015 Enclosure 8, Areva Report ANP-3424NP, Revision 1 to Areva Responses to RAI from Scvb on MNGP EFW LAR (Non-Proprietary) and Enclosure 9, Areva Affidavits ML15274A4752015-09-29029 September 2015 Enclosure 6, Areva Report ANP-3435NP, Revision 0 to Are VA Responses to RAI-8 and RAI-32 from Srxb and Snpb on MNGP EFW LAR (Non-Proprietary) ML15175A3362015-07-0808 July 2015 Staff Assessment of Information Provided Pursuant to Title 10 of the Code of Federal Regulations Part 50, Section 50.54(f), Seismic Hazard Reevaluations for Recommendation 2.1 of the Near Term Task Force ML15169A3582015-06-11011 June 2015 PSP Rev 14 Technical Review 06-11-15 ML16035A1842015-01-30030 January 2015 Document 51-9234641-001, Technical Report of the Demonstration of UT NDE Procedure 54-UT-114-000, Phased Array Ultrasonic Examination of Dry Storage Canister Lid Welds. ML16035A1862015-01-30030 January 2015 54-PQ-114-001, Technical Justification, Phased Array Ultrasonic Examination of Dry Storage Canister Lid Welds. Part 2 of 3 ML16035A1852015-01-30030 January 2015 54-PQ-114-001, Technical Justification, Phased Array Ultrasonic Examination of Dry Storage Canister Lid Welds. Part 1 of 3 L-MT-14-103, Areva Report ANP-3376NP, Rev. 0, Supplement to Xcel Energy License Amendment Request for Areva Extended Flow Window, Enclosure 2 to L-MT-14-1032014-12-31031 December 2014 Areva Report ANP-3376NP, Rev. 0, Supplement to Xcel Energy License Amendment Request for Areva Extended Flow Window, Enclosure 2 to L-MT-14-103 ML16005A1102014-09-25025 September 2014 Redacted 2014 Decommissioning Cost Analysis for the Prairie Island Nuclear Generating Plant ML14269A3252014-09-0505 September 2014 LTR-BWR-ENG-14-037-NP, Alternate Power Ascension Process. ML14269A3232014-09-0505 September 2014 LTR-BWR-ENG-14-034-NP, Investigation Into the Cause of Exceeding the Level 1 (L1) and Level 2 (L2) Limit Curves Generated Based on 2011 Monticello Main Steam Line Strain Gauge Data. ML14204A6232014-07-18018 July 2014 Enclosure 3, Attachment - Response to the Us NRC Request for Additional Information Relative to the Monticello Replacement Steam Dryer Accoustic/Structural Ananlyses Set #7 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 ML18100A1902014-05-22022 May 2014 Enclosure 8 - Structural Integrity Associates, Inc. Report 130415.403, Revision 2, Assessment of Monticello Spent Fuel Canister Closure Plate Welds Based on Welding Video Records ML14136A2892014-05-12012 May 2014 14C4229-RPT-001, Revision 3, Monticello Nuclear Generating Plant Seismic Hazard and Screening Report. L-MT-14-041, ANP-3304NP, Rev. 0, Areva Response to NRC Follow-Up on Srxb RAI-6: ASME Overpressure Analysis.2014-05-0909 May 2014 ANP-3304NP, Rev. 0, Areva Response to NRC Follow-Up on Srxb RAI-6: ASME Overpressure Analysis. ML14069A0052014-04-11011 April 2014 Staff Assessment of the Seismic Walkdown Report Supporting Implementation of NTTF Recommendation 2.3 Related to the Fukushima Dai-ichi Nuclear Power Plant Accident ML14014A2682014-02-28028 February 2014 Staff Review and Evaluation of the Fifth 10-Year Interval Inservice Inspection Program Plan ML14064A1862014-02-25025 February 2014 Structural Integrity Associates, Inc., Evaluation File No. 1301525.301, Monticello Shroud Support Structure Flaw Evaluation Review and Support Plate Weld Inspection Recommendations L-MT-14-003, Enclosures 2 & 3 to L-MT-14-003, ANP-3286NP, Rev. 0, Responses to RAI from Srxb on MNGP Transition to Areva Fuel & Areva Atrium 10XM Fuel Transition - Response to Requests for Additional Information2014-01-31031 January 2014 Enclosures 2 & 3 to L-MT-14-003, ANP-3286NP, Rev. 0, Responses to RAI from Srxb on MNGP Transition to Areva Fuel & Areva Atrium 10XM Fuel Transition - Response to Requests for Additional Information ML13358A3732013-12-31031 December 2013 Enclosure 1, Reload 26 Cycle 27 Supplemental Reload Licensing Report, 000N0154-SRLR, Revision 5, Extended Power Uprate and Maximum Extended Load Line Limit Plus L-MT-13-126, Enclosure 3, GE-MNGP-AEP-3306, Enclosure 2 GEH Response to Mella+ Eicb RAI and Affidavit2013-12-20020 December 2013 Enclosure 3, GE-MNGP-AEP-3306, Enclosure 2 GEH Response to Mella+ Eicb RAI and Affidavit ML13282A1422013-10-0404 October 2013 GE-MNGP-AEP-3304R1, Enclosure 2, GEH Response to Mella + RAI 2 L-MT-13-096, GE-MNGP-AEP-3304R1, Enclosure 4, NEDC-33435 Corrected Pages2013-10-0404 October 2013 GE-MNGP-AEP-3304R1, Enclosure 4, NEDC-33435 Corrected Pages ML13248A3462013-08-29029 August 2013 WCAP-17252-NP, Revision 4 - Acoustic Loads Definition for the Monticello Steam Dyer Replacement Project, Enclosure 12 ML13248A3452013-08-29029 August 2013 WCAP-17251-NP, Revision 2 - Monticello Replacement Steam Dryer Four-Line Acoustic Subscale Testing Report, Enclosure 11 ML13248A3442013-08-29029 August 2013 WCAP-17548-NP, Revision 2 - Signal Processing Performed on Monticello MSL Strain Gauge and Rsd Instrumentation Data, Enclosure 10 ML13248A3482013-08-29029 August 2013 WCAP-17549-NP, Revision 2 - Monticello Replacement Steam Dryer Structural Evaluation for High-Cycle Acoustic Loads Using ACE, Enclosure 13 L-MT-13-091, WCAP-17716-NP, Revision 1 - Benchmarking of the Acoustic Circuit Enhanced Revision 2.0 for the Monticello Steam Dryer Replacement Project, Enclosure 142013-08-29029 August 2013 WCAP-17716-NP, Revision 1 - Benchmarking of the Acoustic Circuit Enhanced Revision 2.0 for the Monticello Steam Dryer Replacement Project, Enclosure 14 ML13200A1922013-07-31031 July 2013 ANP-3092(NP), Rev. 0, Monticello Thermal-Hydraulic Design Report for Atrium 10XM Fuel Assemblies. ML13200A1962013-07-31031 July 2013 ANP-3211(NP), Rev. 1, Monticello EPU LOCA Break Spectrum Analysis for Atrium 10XM Fuel. ML13205A0852013-07-12012 July 2013 Enclosure 2 - Westinghouse Electric Co. Letter LTR-A&SA-13-14, NP-Attachment, Revision 0, Responses to the U.S. NRC Request for Additional Information Relative to the Monticello Replacement Steam Dryer Acoustic/Structural Analyses Set #5 ML13200A1902013-06-30030 June 2013 ANP-3224NP, Rev. 2, Applicability of Areva Np BWR Methods to Monticello. 2023-06-21
[Table view] Category:Miscellaneous
MONTHYEARML23172A1112023-06-21021 June 2023 SLRA - Requests for Confirmation of Information - Set 1 L-MT-17-060, Steam Dryer Visual Inspection Report2017-08-10010 August 2017 Steam Dryer Visual Inspection Report ML17088A5272017-03-31031 March 2017 NSIR Dpcp Confirmatory Review Report, 10 CFR 50.54(p)(2) Changes to the Security Plan, Revision 16, Northern States Power Company, Monticello Nuclear Generating Plant L-MT-17-015, Mitigating Strategies Flood Hazard Assessment (MSA) Submittal2017-03-28028 March 2017 Mitigating Strategies Flood Hazard Assessment (MSA) Submittal ML16302A2462016-10-28028 October 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 Fukushima.. ML16221A2752016-07-31031 July 2016 ANP-3274NP, Revision 2, Analytical Methods for Monticello ATWS-I. L-MT-16-037, ANP-3284NP, Revision 1, Results of Analysis and Benchmarking of Methods for Monticello ATWS-I.2016-07-31031 July 2016 ANP-3284NP, Revision 1, Results of Analysis and Benchmarking of Methods for Monticello ATWS-I. ML15175A3362015-07-0808 July 2015 Staff Assessment of Information Provided Pursuant to Title 10 of the Code of Federal Regulations Part 50, Section 50.54(f), Seismic Hazard Reevaluations for Recommendation 2.1 of the Near Term Task Force ML15169A3582015-06-11011 June 2015 PSP Rev 14 Technical Review 06-11-15 ML14204A6232014-07-18018 July 2014 Enclosure 3, Attachment - Response to the Us NRC Request for Additional Information Relative to the Monticello Replacement Steam Dryer Accoustic/Structural Ananlyses Set #7 ML14136A2892014-05-12012 May 2014 14C4229-RPT-001, Revision 3, Monticello Nuclear Generating Plant Seismic Hazard and Screening Report. ML14014A2682014-02-28028 February 2014 Staff Review and Evaluation of the Fifth 10-Year Interval Inservice Inspection Program Plan L-MT-13-126, Enclosure 3, GE-MNGP-AEP-3306, Enclosure 2 GEH Response to Mella+ Eicb RAI and Affidavit2013-12-20020 December 2013 Enclosure 3, GE-MNGP-AEP-3306, Enclosure 2 GEH Response to Mella+ Eicb RAI and Affidavit ML13282A1422013-10-0404 October 2013 GE-MNGP-AEP-3304R1, Enclosure 2, GEH Response to Mella + RAI 2 L-MT-13-096, GE-MNGP-AEP-3304R1, Enclosure 4, NEDC-33435 Corrected Pages2013-10-0404 October 2013 GE-MNGP-AEP-3304R1, Enclosure 4, NEDC-33435 Corrected Pages L-MT-13-091, WCAP-17716-NP, Revision 1 - Benchmarking of the Acoustic Circuit Enhanced Revision 2.0 for the Monticello Steam Dryer Replacement Project, Enclosure 142013-08-29029 August 2013 WCAP-17716-NP, Revision 1 - Benchmarking of the Acoustic Circuit Enhanced Revision 2.0 for the Monticello Steam Dryer Replacement Project, Enclosure 14 ML13248A3482013-08-29029 August 2013 WCAP-17549-NP, Revision 2 - Monticello Replacement Steam Dryer Structural Evaluation for High-Cycle Acoustic Loads Using ACE, Enclosure 13 ML13248A3462013-08-29029 August 2013 WCAP-17252-NP, Revision 4 - Acoustic Loads Definition for the Monticello Steam Dyer Replacement Project, Enclosure 12 ML13248A3452013-08-29029 August 2013 WCAP-17251-NP, Revision 2 - Monticello Replacement Steam Dryer Four-Line Acoustic Subscale Testing Report, Enclosure 11 ML13248A3442013-08-29029 August 2013 WCAP-17548-NP, Revision 2 - Signal Processing Performed on Monticello MSL Strain Gauge and Rsd Instrumentation Data, Enclosure 10 ML13205A0852013-07-12012 July 2013 Enclosure 2 - Westinghouse Electric Co. Letter LTR-A&SA-13-14, NP-Attachment, Revision 0, Responses to the U.S. NRC Request for Additional Information Relative to the Monticello Replacement Steam Dryer Acoustic/Structural Analyses Set #5 L-MT-13-053, 0000-0146-5423-SRLR, Rev. 1, Supplemental Reload Licensing Report for Monticello, Reload 26 Cycle 27 Extended Power Uprate (EPU)2013-01-31031 January 2013 0000-0146-5423-SRLR, Rev. 1, Supplemental Reload Licensing Report for Monticello, Reload 26 Cycle 27 Extended Power Uprate (EPU) ML13039A2002013-01-21021 January 2013 Enclosures 1 & 2 to L-MT-12-114 - Responses to the Gap Analysis and Marked Up Page Changes to EPU Documentation Based on the Gap Analysis Results, Part 1 of 3 ML13039A2022013-01-21021 January 2013 Enclosures 1 & 2 to L-MT-12-114 - Responses to the Gap Analysis and Marked Up Page Changes to EPU Documentation Based on the Gap Analysis Results, Part 2 of 3 ML12356A1722012-11-30030 November 2012 Kld TR-505, Rev. 1, Development of Evacuation Time Estimates, Part 3 of 8 ML12356A1692012-11-30030 November 2012 Kld TR-505, Rev. 1, Development of Evacuation Time Estimates, Part 8 of 8 ML12356A1702012-11-30030 November 2012 Kld TR-505, Rev. 1, Development of Evacuation Time Estimates, Part 1 of 8 ML12356A1712012-11-30030 November 2012 Kld TR-505, Rev. 1, Development of Evacuation Time Estimates, Part 2 of 8 ML12356A1742012-11-30030 November 2012 Kld TR-505, Rev. 1, Development of Evacuation Time Estimates, Part 4 of 8 ML12340A4302012-11-30030 November 2012 Enclosure 2, Presentation Materials Used During the Course of the NRC Audit of General Electric - Hitachi Held on October 24-25, 2012 - Non-Proprietary L-MT-12-112, Kld TR-505, Rev. 1, Development of Evacuation Time Estimates, Part 7 of 82012-11-30030 November 2012 Kld TR-505, Rev. 1, Development of Evacuation Time Estimates, Part 7 of 8 ML12356A1752012-11-30030 November 2012 Kld TR-505, Rev. 1, Development of Evacuation Time Estimates, Part 5 of 8 L-MT-12-103, Final Response to NRC Request for Information Per 10 CFR 50.54(f) Re the Seismic Aspects of Recommendation 2.3 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident2012-11-27027 November 2012 Final Response to NRC Request for Information Per 10 CFR 50.54(f) Re the Seismic Aspects of Recommendation 2.3 of the Near-Term Task Force Review of Insights from the Fukushima Dai-ichi Accident ML12146A1132012-06-0808 June 2012 Letter Approving Deviation from Response Schedule Imposed by 10 CFR 50.54(f) Letter Re. NTTF Issue R9.3 L-MT-11-076, 2011 Report of Changes and Errors in ECCS Evaluation Models2011-12-22022 December 2011 2011 Report of Changes and Errors in ECCS Evaluation Models ML1127000692011-09-26026 September 2011 Enclosure 2, Mfn 10-245 R4, Description of the Evaluation and Surveillance Recommendations for BWR/2-5 Plants ML1027903732010-09-28028 September 2010 Enclosure 2, GE-MNGP-AEP-1913 R1, GEH Responses to Reactor Systems RAIs ML1016705842010-06-10010 June 2010 Inservice Inspection Examination Plan, Rev. 4, Fourth Interval, May 1, 2003 Through May 31, 2012 ML1012704392010-05-0505 May 2010 Y020100187 - List of Historical Leaks and Spills at U.S. Commercial Nuclear Power Plants ML1007104442010-03-0404 March 2010 Monticello, Enclosure 2, GE-MNGP-AEP-1687, Rev. 1, GEH Responses to NRC Supplemental Requests 1, 3, and 4 ML0936200242008-12-18018 December 2008 Report 0800760.401, Rev. 1, Flaw Evaluation and Vibration Assessment of Existing Monticello Steam Dryer Flaws for Extended Power Uprate. ML0915405192008-05-14014 May 2008 Enclosures 1 and 2 - Radioactive Effluent Release Report and Off-Site Radiation Dose Assessment for January 1 - December 31, 2008 ML0805901332008-02-28028 February 2008 U.S. Dept. of Homeland Security/Final Report for the November 6, 2007, Radiological Emergency Preparedness (REP) Full Participation Plume Exposure Pathway Exercise for the Monticello Nuclear Generating Plant/Report ML0613903922006-06-0808 June 2006 Web References for Monticello Dseis: Aquatic Ecology Part 1 ML0602304312006-01-23023 January 2006 ITS Conversion Beyond Scope Issue 7 ML0520104982005-07-0505 July 2005 Minnesota Department of Natural Resources Web Page 2000 Minnesota Bald Eagle Survey ML0520104942005-07-0505 July 2005 the Raptor Center (University of Minnesota) - Raptor Facts Bald Eagle ML0613901282005-06-0808 June 2005 Web References for Monticello Dseis: Terrestrial Ecology ML0613902252005-06-0808 June 2005 Web References for Monticello Dseis: Water Use/Water Quality L-HU-05-012, Report of Unsatisfactory Blind Performance Testing Results, Monticello Nuclear Generating Plant & Prarie Island Nuclear Generating Plant, Units 1 and 22005-06-0303 June 2005 Report of Unsatisfactory Blind Performance Testing Results, Monticello Nuclear Generating Plant & Prarie Island Nuclear Generating Plant, Units 1 and 2 2023-06-21
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L-MT-1 3-091 ENCLOSURE 13 WESTINGHOUSE WCAP-17549-NP (NONPROPRIETARY), REVISION 2 MONTICELLO REPLACEMENT STEAM DRYER STRUCTURAL EVALUATION FOR HIGH-CYCLE ACOUSTIC LOADS USING ACE 87 pages follow Westinghouse Non-Proprietary Class 3 WCAP-17549-NP Revision 2 Monticello Replacement Steam Dryer Structural Evaluation for High-Cycle Acoustic Loads Using ACE IWestinghouse August 2013 WESTINGHOUSE NON-PROPRIETARY CLASS 3 ii WCAP-17549-NP Revision 2 Monticello Replacement Steam Dryer Structural Evaluation for High-Cycle Acoustic Loads Using ACE Yan Han Gary Plonczak Charles Rajakumar Amir Salehzadeh David Suddaby Robert Theuret Leslie Wellstein Edited by: David Suddaby*Reviewed by Leslie Wellstein*
Acoustic and Structural Analysis August 2013 Approved: David Forsyth*, Manager Acoustic and Structural Analysis*Electronically approved records are authenticated in the electronic document management system.Westinghouse Electric Company LLC 1000 Westinghouse Drive Cranberry Township, PA 16066© 2013 Westinghouse Electric Company LLC All Rights Reserved iii Record of Revisions Rev Date Revision Description 0 May Acoustic load input developed with [ ] a.c 0 2012 (per WCAP- 17540-P Rev. 0)March Acoustic load input developed with [] ac 2013 (per WCAP-1 7716-P Rev. 0)See Acoustic load input developed with [ ]a,c EDMS (per WCAP-17716-P Rev. 1)WCAP- 17549-NP August 2013 Revision 2 iv TABLE OF CONTENTS I IN TRO D U CTIO N ........................................................................................................................
1-1 2 M ETH O D O LO G Y .......................................................................................................................
2-1 2.1 A CO U STIC LO A D A N A LY SIS .....................................................................................
2-1 2.1.1 O verview .............................................................................................................
2-1 2.1.2 D esign Requirem ents ..........................................................................................
2-1 2.1.3 D ryer G eom etry ..................................................................................................
2-2 2.2 1 p c ...........................................
2-2 3 FIN ITE ELEM EN T M O D EL D ESCRIPTIO N ............................................................................
3-1 3.1 STEA M D RY ER G EO M ETRY .......................................................................................
3-1 3.2 FINITE ELEMENT MODEL MESH AND CONNECTIVITY
......................................
3-2 3.2.1 M esh D ensity Study ............................................................................................
3-2 3.2.2 Shell-Solid Connections in the FEM ..................................................................
3-3 3.2.3 Vane Bank Representation
..................................................................................
3-3 3.2.4 Lifting Rod Representation
.................................................................................
3-4 3.2.5 Beam -Solid Connections in the FEM ...............................................................
3-4 3.2.6 D ryer Skirt Subm erged in W ater .........................................................................
3-4 4 M ATERIA L PRO PERTIES ..........................................................................................................
4-1 4.1 STRUCTURA L D A M PIN G ............................................................................................
4-1 5 M O DA L AN A LY SIS ....................................................................................................................
5-l 6 LO A D A PPLICATION
.................................................................................................................
6-1 7 STRU CTU RA L A N A LY SIS ........................................................................................................
7-1 7.1 H A RM ON IC A N A LY SIS ................................................................................................
7-1 7.1.1 ..................
[.................................................
7-1 7.1.2 O verview -Tim e-H istory Solution .....................................................................
7-1 7.1.3 Inverse Fourier Transform
..................................................................................
7-2 7.1.4 Frequency Scaling (Shifting)
..............................................................................
7-3 7.2 PO ST-PRO CESSIN G ......................................................................................................
7-4 7.2.1 Prim ary Stress Evaluation
...................................................................................
7-4 7.2.2 A lternating Stress ................................................................................................
7-4 7.3 CALCULATION AND EVALUATION OF WELD STRESSES ....................................
7-5 7.4 SU BM O D ELIN G TECHN IQ U ES ..................................................................................
7-8 7.5 [ ]ac ...................
7-9 8 A N A LY SIS RESU LTS .................................................................................................................
8-1 8.1 G LO BA L M O D EL ..........................................................................................................
8-1 8.2 SU BM O D ELIN G ............................................................................................................
8-1 WCAP- 17549-NP August 2013 Revision 2 V 8.2.1 [c .............
.......................
1........
-8.2.2 Subm odel M esh D ensity .....................................................................................
8-1 8.3 A SM E A lternating Stress Calculations
............................................................................
8-2 9
SUMMARY
OF RESULTS AND CONCLUSIONS
...................................................................
9-1 10 R E FE R E N C E S ...........................................................................................................................
10-1 APPENDIX A SKIRT SLOT SUBMODEL MESH DENSITY STUDY .............................
A-i WCAP- 17549-NP August 2013 Revision 2 vi LIST OF TABLES Table 2-1 Table 2-2-2 Table 4-1 Table 4-2 Table 8-1 Table 8-2 Table A-I Table A-2 Vane Passing Frequency
[ ]C ....................................
2-3 Summary of Maximum Vane Passing Frequency Stress at EPU .....................................
2-3 Sum m ary of M aterial Properties
......................................................................................
4-2 Summary of Vane Bank [ ]a.b,. .....................................
4-2 Summary of Results at EPU: Components
[]a,c ...................
8-3 Summary of Results at EPU: Components
[ ]a,c ..........................
8-4 Submodel Cut Boundary Stress Comparison
..................................................................
A-2 Submodel Cut Boundary Stress Comparison
..................................................................
A-2 WCAP- 17549-NP August 2013 Revision 2 vii LIST OF FIGURES Figure 1-1 Schem atic of M onticello Replacem ent Steam D ryer ..............................................................
1-2 Figure 2-1 G eom etry Plot: [ ]a3C ........................................................................................
2-4 Figure 2-2 G eom etry Plot: [ ]a. .............................................................................................
2-5 Figure 2-3 G eom etry Plot: [ ]a,c ............................................................................
2-6 Figure 2-4 G eom etry Plot: [ ]a,c ..................................................................................
2-7 Figure 2-5 G eom etry Plot: [ ]afc .........................................................................
2-8 Figure 2-6 G eom etry Plot: [ ]a ..............................................................
2-9 Figure 2-7 G eom etry Plot: [ ], .......................................................
2-10 Figure 3-1 M onticello Replacem ent Steam D ryer Finite Elem ent M odel ................................................
3-5 Figure 3-2 Low er [ ]a,c .......................................................................................................
3-6 Figure 3-3 Low er [ ...C ............................................................................................
3-7 Figure 3-4 Vane Bank Structural Com ponents ..........................................................................................
3-8 Figure 3-5 Vane Bank G eom etry ..............................................................................................................
3-9 Figure 3-6 D ryer H ood G eom etry ...........................................................................................................
3-10 Figure 3-7 Skirt G eom etry ......................................................................................................................
3-11 Figure 3-8 [ ]ax ...............................................
3-12 Figure 3-9 [ ja] c .........................................................................
3-13 Figure 3-10 [], ................................................................
3-14 Figure 3-11 Lifting Rod G eom etry .........................................................................................................
3-15 Figure 3-12 [ ]a3 ............................................................................................
3-16 Figure 3-13 [ ]a.&. ...............................................................................................
3-17 Figure 3-14 [ ]a.c. .............................
3-18 Figure 3-15 [ ]a'c ...............................................
3-19 Figure 3-16 [ ]a'c .........................................................
3-20 Figure 3-17 Structural Com ponents of Vane Bank .................................................................................
3-21 Figure 3-18 Structural and N on-Structural Com ponents of Vane Bank ..................................................
3-22 Figure 3-19 Vane Bank M ass Blocks ......................................................................................................
3-23 Figure 3-20 [ ]jac ..........................................
3-24 Figure 5-1 M odal A nalysis: [ ]a.c. .........................................................................................
5-2 Figure 5-2 M odal A nalysis: [ ],. c ...........................................................................
5-3 Figure 5-3 M odal A nalysis: [ ]., ........................................................................
5-4 WCAP-17549-NP August 2013 Revision 2 viii Figure 5-4 Figure 6-1 Figure 6-2 Figure 6-3 Figure 6-4 Figure 8-1 Figure 8-2 Figure 8-3 Figure 8-4 Figure 8-5 Figure 8-6 Figure A-I Figure A-2 Figure A-3 Figure A-4 Figure A-5 M odal Analysis:
[]a,c .............................................................................
5-5[ ]a c .......................................................................
6 -3[ ] c.p ...............................................................................
6 -4[ ]a ..............................
6-5[]a' .............
6-6[ ]a~c ..........................................................................................
8 -5[] , ...................................................................................
8 -6[]"' ...................................................
8-7[] ,c .....................................................................
8 -8]a,c ..........................................................
8 -9[31C,...............
8-10 Submodel [],c ...................................................
A-3 Submodel M esh Densities
.....................................................................................................
A-4[ ]8' Submodel Results ......................................................................................
A-5[ ]plc Submodel Results ............................................................................................
A-6[ ]ax Submodel Results ................................................................................................
A-7 WCAP- 17549-NP August 2013 Revision 2 ix EXECUTIVE
SUMMARY
A high-cycle fatigue evaluation of the Westinghouse replacement steam dryer for the Monticello plant has been completed with loads generated using the Acoustic Circuit Enhanced (ACE) Revision 2.0 []a c Acoustic loads and stresses for extended power uprate (EPU) conditions have been evaluated for high-cycle fatigue and have been determined to meet the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel (B&PV) Code Section III, Subsection NG criteria.]a,,. These results account for all the biases and uncertainties in the acoustic loads models and finite element analyses.
To account for uncertainties in the modal frequency predictions of the finite element model (FEM), the stresses are also computed for loads that are shifted in the frequency domain by [ ]"'. These results also include a conservative estimate of the high cycle fatigue stress caused by vane passing frequency (VPF) of the recirculation pumps.WCAP- 17549-NP August 2013 WCAP- I17549-NP August 2013 Revision 2 x LIST OF ABBREVIATIONS Abbreviation ACE ASME B&PV BWR CLTP EPU FEM FSRF IFT MPC MSL MWt SCF I VB VPF 2-D 3-D Description acoustic circuit enhanced American Society of Mechanical Engineers boiler and pressure vessel boiling water reactor current licensed thermal power extended power uprate finite element model fatigue strength reduction factor inverse Fourier transform multi-point constraint main steam line megawatts thermal stress concentration factor]a,c vane bank vane passing frequency two-dimensional three-dimensional Trademark Note: ANSYS, ANSYS Workbench, CFX, AUTODYN, and any and all ANSYS, Inc. product and service names are registered trademarks or trademarks of ANSYS, Inc. or its subsidiaries located in the United States or other countries.
WCAP- 1 7549-NP August 2013 WCAP-17549-NP August 2013 Revision 2 1-1 1 INTRODUCTION In 2002, after increasing power to 117% of the original licensed thermal power, the steam dryer in a boiling water reactor (BWR) had a significant reduction in its structural integrity.
After extensive evaluation by various industry experts, the root cause of the dryer degradation was determined to be acoustic fluctuating pressure loads on the dryer, resulting from resonances produced by steam flow in the main steam lines (MSLs) across safety and relief valve inlets. The degradation experienced in the steam dryer of a BWR led to changes to Regulatory Guide 1.20, requiring plants to evaluate their steam dryer before any planned increase in power level.The Monticello power plant has contracted Westinghouse for a replacement steam dryer, and is also planning a power uprate. In conjunction with the component replacement by Monticello and the planned power uprate, an analysis has been performed to qualify the replacement steam dryer, shown in Figure I-1, for acoustic pressure loads and vibratory loads caused by vane passing frequency of the recirculation pumps. The process used to perform the analysis involves []" Acoustic loads applicable to EPU conditions are evaluated.
A dynamic analysis is performed using []a,c WCAP- 17549-NP August 2013 Revision 2 1-2 ac Figure 1-1 Schematic of Monticello Replacement Steam Dryer WCAP- I 7549-NP August 2013 Revision 2 2-1 2 METHODOLOGY
2.1 ACOUSTIC
LOAD ANALYSIS 2.1.1 Overview An analysis has been performed to assess the structural integrity of the replacement dryer for the Monticello plant subject to acoustic loads. []a,c 2.1.2 Design Requirements 2.1.2.1 [a,c The replacement dryer is analyzed according to the 2004 Edition of the ASME B&PV Code, Subsection NG (Reference 1). This report documents the suitability of the replacement dryer for high-cycle fatigue loads resulting from acoustic loads and vane passing frequency loads due to the recirculation pumps. The governing criterion for the analysis is in terms of the allowable component fatigue usage.The objective of this analysis is to show that the maximum alternating stress intensity anywhere in the dryer is less than the material endurance strength at 10"l cycles. The applicable fatigue curve for stainless steel (the dryer is manufactured from SS316L), is shown in Figure 1-9.2.2 in Appendix I of the ASME Code.[pac 2.1.2.2 Young's Modulus Correction Before comparing the maximum alternating stress intensity to the ASME Code endurance strength, it is necessary to account for the Young's modulus correction.
The analysis uses a Young's modulus of 25.425 x 106 psi, compared to the value to construct the fatigue curves of 28.3 x 106 psi. The ratio that is applied to the calculated alternating stress intensities is 1.113 (28.3 / 25.425).WCAP-17549-NP August 2013 Revision 2 2-2 2.1.2.3 1 I aC[2.1.3 Dryer Geometry Plots showing various aspects of the dryer configuration are provided in Figures 2-1 through 2-7.2.2 [ a,c I WCAP- 17549-NP August 2013 Revision 2 2-3 abc I Table 2-1 Vane Passing Frequency
[ ]C Table 2-2-2 Summary of Maximum Vane Passing Frequency Stress at EPU ab,c WCAP- 17549-NP August 2013 Revision 2 2-4 a,c Figure 2-1 Geometry Plot: I Ia,c WCAP- 1 7549-NP August 2013 Revision 2 2-5 a,c Figure 2-2 Geometry Plot:[I axc WCAP-17549-NP August 2013 Revision 2 2-6 a,c Figure 2-3 Geometry Plot: I I 8,C WCAP- I 7549-NP August 2013 Revision 2 2-7 a,c 1 Figure 2-4 Geometry Plot: [WCAP-1 7549-NP August 2013 WCAP-17549-NP August 2013 Revision 2 2-8 a,c Figure 2-5 Geometry Plot: [I a, WCAP-1 7549-NP August 2013 Revision 2 2-9 ac Figure 2-6 Geometry Plot: [121C WCAP-1 7549-NP August 2013 Revision 2 2-10 a,c Figure 2-7 Geometry Plot: I I a,c WCAP-17549-NP August 2013 Revision 2 3-1 3 FINITE ELEMENT MODEL DESCRIPTION
3.1 STEAM
DRYER GEOMETRY The Monticello replacement steam dryer FEM, generated using the ANSYS computer code', is shown in Figure 3-1. The model consists primarily of [P.C.I]a,c.The dryer structure includes []a..The [I'll The analysis qualification of the Monticello replacement steam dryer was performed using the]a.c WCAP-17549-NP August 2013 Revision 2 3-2 Figure 3-11 shows the []a,c 3.2 FINITE ELEMENT MODEL MESH AND CONNECTIVITY The dryer plates are all modeled]a.c The vane bank []a,c.I]a" are shown in Figure 3-16.3.2.1 Mesh Density Study A mesh density study was performed using]31c WCAP-1 7549-NP August 2013 Revision 2 3-3 3.2.2 Shell-Solid Connections in the FEM A study was performed to investigate the load transfer between shells and solids using]a,c 3.2.3 Vane Bank Representation The vane bank modules are box-like structures with many internal hanging chevrons.]"c and are shown in more detail in Figure 3-17.The perforated plates []"' are shown in Figure 3-18.Also shown in Figure 3-18 are the []ac.The vane bank []a' are shown in Figure 3-14.WCAP- 17549-NP August 2013 Revision 2 3-4 3.2.4 Lifting Rod Representation The lifting rod is modeled are shown in Figure 3-16.3.2.5 Beam -Solid Connections in the FEM A study was performed to evaluate the moment transfer and adequacy of the []a,c 3.2.6 Dryer Skirt Submerged in Water The dryer skirt is partially submerged in water.Ia,c WCAP- 17549-NP August 2013 Revision 2 3-5 ac Figure 3-1 Monticello Replacement Steam Dryer Finite Element Model WCAP- I 7549-NP August 2013 WCAP- 17549-NP August 2013 Revision 2 3-6 a,c Figure 3-2 Lower I ac WCAP-17549-NP August 2013 Revision 2 3-7 a,c Figure 3-3 Lower I] 2,c WCAP-17549-NP August 2013 Revision 2 3-8 a,c Figure 3-4 Vane Bank Structural Components WCAP- 1 7549-NP August 2013 WCAP- 17549-NP August 2013 Revision 2 3-9 a,c Figure 3-5 Vane Bank Geometry WCAP-17549-NP August 2013 Revision 2 3-10 a,c Figure 3-6 Dryer Hood Geometry WCAP-17549-NP August 2013 Revision 2 3-11 a,c Figure 3-7 Skirt Geometry WCAP- 17549-NP August 2013 Revision 2 3-12 a,c Figure 3-8 [I a,c WCAP- 1 7549-NP August 2013 Revision 2 3-13 a,c Figure 3-9 []a, C WCAP-17549-NP August 2013 Revision 2 3-14 ac Figure 3-10 [I a,c WCAP-17549-NP August 2013 Revision 2 3-15 a,c Figure 3-11 Lifting Rod Geometry WCAP-17549-NP August 2013 Revision 2 3-16 a,c Figure 3-12 [a, C WCAP-17549-NP August 2013 Revision 2 3-17 a,c Figure 3-13 1 la,c WCAP-17549-NP August 2013 Revision 2 3-18 a,c Figure 3-14 ]a,1C WCAP- 17549-NP August 2013 Revision 2 3-19 a,c Figure 3-15 [I a,c WCAP- 17549-NP August 2013 Revision 2 3-20 a,c Figure 3-16 [I a,c WCAP- 17549-NP August 2013 Revision 2 3-21 a,c Figure 3-17 Structural Components of Vane Bank WCAP- I 7549-NP August 2013 Revision 2 3-22 a,c 1 Figure 3-18 Structural and Non-Structural Components of Vane Bank WCAP- 1 7549-NP August 2013 Revision 2 3-23 a,c Figure 3-19 Vane Bank Mass Blocks WCAP- 17549-NP August 2013 Revision 2 3-24 ac Figure 3-20 [12,C WCAP- 17549-NP August 2013 Revision 2 4-1 4 MATERIAL PROPERTIES The material properties used in the structural analysis are summarized in Table 4-1. Material properties are taken from the ASME Code, Reference 2, for []a are summarized in Table 4-2.4.1 STRUCTURAL DAMPING Structural damping is defined as 1% of critical damping for all frequencies.
This damping is consistent with guidance given on page 10 of NRC RG-1.20 (Reference 3). Using the harmonic analysis approach, a consistent damping level is used across the frequency domain.WCAP-17549-NP August 2013 Revision 2 4-2 Table 4-1 Summary of Material Properties a,b,c Table 4-2 Summary of Vane Bank r ja~bxc ab,c WCAP- 17549-NP August 2013 Revision 2 5-1 5 MODAL ANALYSIS As a precursor to performing the transient analysis, a modal analysis of the dryer was performed.
The modal analysis was performed for modes between 0 Hz and 140 Hz. Some modes for the hood and skirt are shown in Figure 5-1 through Figure 5-4. The fundamental modes for the [],*, respectively.
The acoustic fatigue evaluation includes loads in the range from 0 Hz to 250 Hz. This modal analysis is not intended to be complete but only a check of the finite element model.WCAP-17549-NP August 2013 Revision 2 5-2 ac Figure 5-1 Modal Analysis:
[Sa,c WCAP- 17549-NP August 2013 Revision 2 5-3 a,c Figure 5-2 Modal Analysis:
I I.o WCAP-17549-NP August 2013 Revision 2 5-4 ac Figure 5-3 Modal Analysis:
I Ia,c WCAP- 17549-NP August 2013 Revision 2 5-5 a~c 7 Figure 5-4 Modal Analysis:
[I a,c WCAP- 17549-NP August 2013 Revision 2 6-1 6 LOAD APPLICATION The frequency-dependent acoustic loads were developed using a three-dimensional (3-D) acoustic model representation of the dryer assembly.
The acoustic pressure (P) loads on the steam dryer structure were calculated by [WCAP-17549-NP August 2013 Revision 2 6-2]a,c WCAP-17549-NP August 2013 Revision 2 6-3 a,b,c Figure 6-1 [la,c WCAP- 17549-NP August 2013 Revision 2 6-4 a,x Figure 6-2 [I a,C WCAP-17549-NP August 2013 Revision 2 6-5 a,c Figure 6-3 [Ia,c WCAP- I 7549-NP August 2013 Revision 2 6-6 a,c 7 Figure 6-4 f I a,C WCAP-17549-NP August 2013 Revision 2 7-1 7 STRUCTURAL ANALYSIS 7.1 HARMONIC ANALYSIS 7.1.1 1 ] 2C Harmonic solutions are obtained using the ANSYS Monticello replacement FEM for the following sets of conditions:
Model Support (Boundary)
Conditions The model is supported
[]a.c Operating Conditions EPU operating conditions are evaluated.
Frequency Shifts[]a,c.7.1.2 Overview -Time-History Solution The harmonic analysis begins with the [],c. As discussed above, separate solutions are obtained for [WCAP-17549-NP August 2013 Revision 2 7-2 a,c.I]a,c.I]a,c.It was found to be inefficient to process the results]ac" I I]a.c.[]a.c.7.1.3 Inverse Fourier Transform I WCAP- 17549-NP August 2013 Revision 2 7-3 pac 7.1.4 Frequency Scaling (Shifting)
As a result of approximations of the structural interactions used in developing the FEM, small errors can result in the prediction of the component natural frequencies.
Varying degrees of mesh discretization can also introduce small errors in the FEM results. To account for these effects, frequency scaling is applied to the applied load history.If frequency scaling is applied,]a,c WCAP- 17549-NP August 2013 Revision 2 7-4 7.2 POST-PROCESSING
7.2.1 Primary
Stress Evaluation Once the time-history has been calculated
[ an evaluation is performed to calculate the maximum alternating stress intensity.
The stress intensities for the]a,c.For a two-dimensional stress field, the principal stresses are calculated as follows (the X-Y plane is used as an example. The same algorithms are also applicable to other planes.)G5x +GOy --___y a + T+x_ Y )C7,2 2 -- 2 +)G3 = 0.0 Stress Intensity
= Maximum ac 2 -a 3 1 ao 3 -oI For a general 3-D state of stress, the resulting principal stresses correspond to the roots of the following cubic equation as: ("3 -_ a 2 o2 + ai -ao = 0 where, a 2 = a. + ay + ayz a, = ayýa + ay T + az~a -a\,) -a)yz2 -2a ao = aya(3y -z + 2a7XYCTyzCT
-Ocyz 2 -aayzx 2 -cyzyxy2 7.2.2 Alternating Stress The calculation of the alternating stress intensity, following the ASME B&PV Code,Section III, Division I -NG process, is performed as follows: 1. Apply the stress concentration factors (geometric or FSRF), as applicable, to the component stresses.2. Calculate the range of stress for each component of stress for two time points.3. Calculate the stress intensity of the component ranges.WCAP-17549-NP August 2013 Revision 2 7-5]a,c.7.3 CALCULATION AND EVALUATION OF WELD STRESSES Due to the nature of the dynamic analysis, detailed modeling of the welds is not practical in the global dryer FEM. Calculation of weld stresses requires a different approach.
For the Monticello replacement steam dryer, []a,c.As discussed above, detailed weld stresses are not directly available from the finite element analysis.[]a,c.WCAP-17549-NP August 2013 Revision 2 7-6[I a,c WCAP-1 7549-NP August 2013 Revision 2 7-7[I a,c WCAP- 17549-NP August 2013 Revision 2 7-8 ac 7.4 SUBMODELING TECHNIQUES Due to the nature of the acoustic analysis and the large number of unit solutions that are required, it is not practical to use a fine mesh for the acoustic structural analysis.
Rather a mesh density that can accurately predict the dynamic characteristics of the structure is used, but may require some additional analysis for localized regions of high stress. For areas where additional analysis is necessary using a more refined element mesh, a technique known as submodeling is used. The submodeling method [ac.WCAP-17549-NP August 2013 Revision 2 7-9 7.5 ] 1]a,c.WCAP- 17549-NP August 2013 Revision 2 8-1 8 ANALYSIS RESULTS 8.1 GLOBAL MODEL As discussed previously, jaG,.A summary []a,c 8.2 SUBMODELING Based on the results for the global model, jax.8.2.1 [I a,c[1a3c 8.2.2 Submodel Mesh Density To demonstrate that the [ ]a,c submodel results are appropriate,]ac The comparison and results are documented in Appendix A of this report.WCAP-17549-NP August 2013 Revision 2 8-2 8.3 ASME ALTERNATING STRESS CALCULATIONS Section 7.2.2 discusses the jac WCAP- 17549-NP August 2013 Revision 2 8-3 Table 8-1 Summary of Results at EPU: Components
]a,b,c WCAP-17549-NP August 2013 Revision 2 8-4 Table 8-2 Summary of Results at EPU: Components
[ Ia.c a,b,c Table 8-3ASME Alternating Stress Calculation Summary a,b,c+i i.4--I-WCAP- I 7549-NP August 2013 Revision 2 8-5 a,c Figure 8-1 [Sa,c WCAP- 17549-NP August 2013 Revision 2 8-6 ac Figure 8-2 [] a.c WCAP-17549-NP August 2013 Revision 2 8-7 a,b,c Figure 8-3 1 ]WCAP- 17549-NP August 2013 Revision 2 8-8 a,b,c Figure 8-4 [I a,c WCAP- I 7549-NP August 2013 Revision 2 8-9 I a,b,c Figure 8-5 [I a,c WCAP-17549-NP August 2013 Revision 2 8-10 a,b,c Figure 8-6 1 Saxc WCAP- 17549-NP August 2013 Revision 2 9-1 9
SUMMARY
OF RESULTS AND CONCLUSIONS I I I]a,c.]a,c.WCAP- 1 7549-NP August 2013 WCAP- 17549-NP August 2013 Revision 2 10-1 10 REFERENCES
- 1. ASME Boiler and Pressure Vessel Code, 2004 Edition,Section III, Division 1.2. ASME Boiler and Pressure Vessel Code, 2004 Edition,Section II, Part D.3. U.S. Nuclear Regulatory Commission, Regulatory Guide 1.20, Rev. 3, "Comprehensive Vibration Assessment Program for Reactor Internals During Preoperational and Initial Startup Testing," March 2007.4. [pac 5. [axc 6. []axc 7. BWR Vessel and Internals Project, Guidance for Demonstration of Steam Dryer Integrity for Power Uprate. Electric Power Research Institute, Palo Alto, CA: May 2010. BWR-182-A.
WCAP- 17549-NP August 2013 Revision 2 A-1 APPENDIX A SKIRT SLOT SUBMODEL MESH DENSITY STUDY To illustrate that the submodel results used are appropriate,]a,c WCAP-17549-NP August 2013 Revision 2 A-2 Table A-i Submodel Cut Boundary Stress Comparison Table A-2 Submodel Cut Boundary Stress Comparison a,b,c a,b,c WCAP-1 7549-NP August 2013 WCAP- 17549-NP August 2013 Revision'-'
A-3 a,b,c Figure A-1 Submodel [] a.c WCAP- 1 7549-NP August 2013 Revision 2 A-4 a,b,c Figure A-2 Submodel Mesh Densities WCAP-1 7549-NP August 2013 Revision 2 A-5 a,b,c Figure A-3 [jaIc Submodel Results WCAP-1 7549-NP August 2013 WCAP- 17549-NP August 2013 Revision 2 A-6 a,b,c Figure A-4 ILC Submodel Results WCAP- 17549-NP August 2013 Revision 2 A-7-- a,b,c Figure A-5 []C Submodel Results WCAP-17549-NP August 2013 Revision 2