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| {{#Wiki_filter:L-MT-1 3-091ENCLOSURE 10WESTINGHOUSE WCAP-17548-NP, (NONPROPRIETARY) | | {{#Wiki_filter:L-MT-1 3-091 ENCLOSURE 10 WESTINGHOUSE WCAP-17548-NP, (NONPROPRIETARY) |
| REVISION 2SIGNAL PROCESSING PERFORMED ON MONTICELLO MSL STRAIN GAUGE ANDRSD INSTRUMENTATION DATA47 pages follow Westinghouse Non-Proprietary Class 3WCAP-17548-NP Revision 2Signal Processing Peon Monticello MSL StGauge and RSDInstrumentation Data)Westinghouse August 2013rformedrain WESTINGHOUSE NON-PROPRIETARY CLASS 3WCAP-17548-NP Revision 2Signal Processing Performed on Monticello MSL StrainGauge and RSD Instrumentation DataAnnMarie Rowland*U.S. BWR Engineering August 2013Reviewer: | | REVISION 2 SIGNAL PROCESSING PERFORMED ON MONTICELLO MSL STRAIN GAUGE AND RSD INSTRUMENTATION DATA 47 pages follow Westinghouse Non-Proprietary Class 3 WCAP-17548-NP Revision 2 Signal Processing Pe on Monticello MSL St Gauge and RSD Instrumentation Data)Westinghouse August 2013 rformed rain WESTINGHOUSE NON-PROPRIETARY CLASS 3 WCAP-17548-NP Revision 2 Signal Processing Performed on Monticello MSL Strain Gauge and RSD Instrumentation Data AnnMarie Rowland*U.S. BWR Engineering August 2013 Reviewer: |
| Inessa E. Berman*U.S. BWR Engineering Approved: | | Inessa E. Berman*U.S. BWR Engineering Approved: |
| Daniel T. McLaughlin*, | | Daniel T. McLaughlin*, Manager U.S. BWR Engineering |
| ManagerU.S. BWR Engineering
| | *Electronically approved records are authenticated in the electronic document management system.Westinghouse Electric Company LLC 1000 Westinghouse Drive Cranberry Township, PA 16066, USA© 2013 Westinghouse Electric Company LLC All Rights Reserved WCAP-17548-NP TABLE OF CONTENTS LIST OF TABLES ....................................................................................................................................... |
| *Electronically approved records are authenticated in the electronic document management system.Westinghouse Electric Company LLC1000 Westinghouse DriveCranberry | | iii LIST OF FIGURES ..................................................................................................................................... |
| : Township, PA 16066, USA© 2013 Westinghouse Electric Company LLCAll Rights ReservedWCAP-17548-NP TABLE OF CONTENTSLIST OF TABLES .......................................................................................................................................
| | iv EXECUTIVE SUM M ARY .......................................................................................................................... |
| iiiLIST OF FIGURES .....................................................................................................................................
| | vi LIST OF ACRONYM S AND ABBREVIATIONS |
| ivEXECUTIVE SUM M ARY ..........................................................................................................................
| |
| viLIST OF ACRONYM S AND ABBREVIATIONS
| |
| ................................................................................. | | ................................................................................. |
| viiBACKGROUN D AN D INTRODUCTION
| | vii BACKGROUN D AN D INTRODUCTION |
| .................................................................................. | | .................................................................................. |
| 1-11.1 BACKGROUND OF ACOUSTIC ISSUES AND REQUIREMENTS | | 1-1 |
| | |
| | ==1.1 BACKGROUND== |
| | |
| | OF ACOUSTIC ISSUES AND REQUIREMENTS |
| ........................... | | ........................... |
| 1-11.2 REPLACEM ENT OF THE STEAM DRYER ................................................................. | | 1-1 1.2 REPLACEM ENT OF THE STEAM DRYER ................................................................. |
| 1-21.3 PURPOSE ........................................................................................................................ | | 1-2 1.3 PURPOSE ........................................................................................................................ |
| 1-32 SUM M ARY OF PREVIOUS W ORK .......................................................................................... | | 1-3 2 SUM M ARY OF PREVIOUS W ORK .......................................................................................... |
| 2-12.1 ACOUSTIC SCREENING | | 2-1 2.1 ACOUSTIC SCREENING |
| ......................................................................................... | | ......................................................................................... |
| 2-12.2 SUBSCALE TESTING ................................................................................................... | | 2-1 2.2 SUBSCALE TESTING ................................................................................................... |
| 2-12.3 PREVIOUS DATA RECORDINGS | | 2-1 2.3 PREVIOUS DATA RECORDINGS |
| ................................................................................ | | ................................................................................ |
| 2-12.4 DERIVATION OF INSTRUMENTATION LOCATIONS | | 2-1 2.4 DERIVATION OF INSTRUMENTATION LOCATIONS |
| .............................................. | | .............................................. |
| 2-23 DATA COLLECTION AND PROCESSING PLAN .................................................................... | | 2-2 3 DATA COLLECTION AND PROCESSING PLAN .................................................................... |
| 3-13.1 DATA ACQUISITION AND SIGNAL VALIDITY | | 3-1 3.1 DATA ACQUISITION AND SIGNAL VALIDITY ........................................................ |
| ........................................................ | | 3-1 3.2 DATA PROCESSING OVERVIEW ................................................................................ |
| 3-13.2 DATA PROCESSING OVERVIEW | | 3-3 3.3 STRAIN TO PRESSURE CONVERSION |
| ................................................................................ | |
| 3-33.3 STRAIN TO PRESSURE CONVERSION | |
| -MSL STRAIN GAUGE DATA ................ | | -MSL STRAIN GAUGE DATA ................ |
| 3-43.4 NARROW -BAND FILTERING | | 3-4 3.4 NARROW -BAND FILTERING |
| ...................................................................................... | | ...................................................................................... |
| 3-53.5 PSD DERIVATION | | 3-5 3.5 PSD DERIVATION |
| ......................................................................................................... | | ......................................................................................................... |
| 3-63.6 W AVELET DENOISING | | 3-6 3.6 W AVELET DENOISING |
| ................................................................................................ | | ................................................................................................ |
| 3-63.7 COMPUTATION OF THE PREDICTED EPU SIGNAL ............................................... | | 3-6 3.7 COMPUTATION OF THE PREDICTED EPU SIGNAL ............................................... |
| 3-74 INPUTS TO SIGNAL PROCESSING AND ASSUMPTIONS | | 3-7 4 INPUTS TO SIGNAL PROCESSING AND ASSUMPTIONS |
| .................................................... | | .................................................... |
| 4-14.1 IN PUTS ........................................................................................................................... | | 4-1 4.1 IN PUTS ........................................................................................................................... |
| 4-14.2 ASSUM PTION S .............................................................................................................. | | 4-1 4.2 ASSUM PTION S .............................................................................................................. |
| 4-15 DISCUSSION OF RESULTS .................................................................................................. | | 4-1 5 DISCUSSION OF RESULTS .................................................................................................. |
| 5-15.1 DATA RECORDING | | 5-1 5.1 DATA RECORDING |
| ....................................................................................................... | | ....................................................................................................... |
| 5-15.2 STRAIN TO PRESSURE CONVERSION | | 5-1 5.2 STRAIN TO PRESSURE CONVERSION |
| ..................................................................... | | ..................................................................... |
| 5-45.3 FILTERING | | 5-4 5.3 FILTERING |
| ................................................................................................................... | | ................................................................................................................... |
| 5-105.4 W AVELET DENOISING | | 5-10 5.4 W AVELET DENOISING |
| .............................................................................................. | | .............................................................................................. |
| 5-135.5 PREDICTED EPU SIGNAL ......................................................................................... | | 5-13 5.5 PREDICTED EPU SIGNAL ......................................................................................... |
| 5-156 CONCLUSIONS | | 5-15 6 CONCLUSIONS |
| .......................................................................................................................... | | .......................................................................................................................... |
| 6-17 RE FERE NCES ............................................................................................................................. | | 6-1 7 RE FERE NCES ............................................................................................................................. |
| 7-1WCAP-17548-NP August 2013Revision 2 | | 7-1 WCAP-17548-NP August 2013 Revision 2 iii LIST OF TABLES Table 2-1 Table 2-2 Table 3-1 Table 3-2 Table 3-3 Table 3-4 Table 5-1 Table 5-2 Table 5-3 Table 5-4 Table 5-5 Natural Frequency of [.]b ...................................................................... |
| iiiLIST OF TABLESTable 2-1Table 2-2Table 3-1Table 3-2Table 3-3Table 3-4Table 5-1Table 5-2Table 5-3Table 5-4Table 5-5Natural Frequency of [.]b ......................................................................
| |
| 2-1............................................................................................ | | 2-1............................................................................................ |
| 2 -3[ ]ax ............................. | | 2 -3[ ]ax ............................. |
Line 83: |
Line 82: |
| 3 -2[ ]a,c ........................................... | | 3 -2[ ]a,c ........................................... |
| 3-2[ ]a,c ................................................. | | 3-2[ ]a,c ................................................. |
| 3-2Transducers and Units ...................................................................................................... | | 3-2 Transducers and Units ...................................................................................................... |
| 5-1Dates and Tim es of Data Recording | | 5-1 Dates and Tim es of Data Recording |
| ................................................................................ | | ................................................................................ |
| 5-2[ ]a,c ................................................................... | | 5-2[ ]a,c ................................................................... |
| 5 -4[ax .................... | | 5 -4[ax .................... |
| 5-5Sum mary of Narrow-Band Filters ................................................................................. | | 5-5 Sum mary of Narrow-Band Filters ................................................................................. |
| 5-10WCAP-17548-NP August 2013Revision 2 | | 5-10 WCAP-17548-NP August 2013 Revision 2 iv LIST OF FIGURES Figure 1-1 Schematic of Replacement Steam Dryer ................................................................................. |
| ivLIST OF FIGURESFigure 1-1 Schematic of Replacement Steam Dryer .................................................................................
| | 1-2 Figure 2-1 Schematic of M SL [],b,c ......................................................... |
| 1-2Figure 2-1 Schematic of M SL [],b,c ......................................................... | | 2-2 Figure 2-2 Schematic of [ ]a,b,c ........................................................ |
| 2-2Figure 2-2 Schematic of [ ]a,b,c ........................................................ | | 2-3 Figure 2-3 Schematic of [ ]a,b,c ............... |
| 2-3Figure 2-3 Schematic of [ ]a,b,c ............... | | 2-4 Figure 2-4 Schematic of [ ]a,b~c ......... |
| 2-4Figure 2-4 Schematic of [ ]a,b~c ......... | | 2-4 Figure 2-5 Schematic of [ ]abc........... |
| 2-4Figure 2-5 Schematic of [ ]abc........... | | ........ 2-5 Figure 2-6 Schematic of [ .bc............................................... |
| ........ | | 2-5 Figure 2-7 Schematic of [ ]ab ................ |
| 2-5Figure 2-6 Schematic of [ .bc............................................... | | 2-6 Figure 3-1 Pipe Mode Diagram, N=[0,4] .................................................................................................. |
| 2-5Figure 2-7 Schematic of [ ]ab ................ | | 3-4 Figure 5-1 Examples of Transients in Data ............................................................................................... |
| 2-6Figure 3-1 Pipe Mode Diagram, N=[0,4] .................................................................................................. | | 5-3 Figure 5-2 [ ]bC ..................................... |
| 3-4Figure 5-1 Examples of Transients in Data ............................................................................................... | | 5-6 Figure 5-3 [ ]b.c .......................................... |
| 5-3Figure 5-2 [ ]bC ..................................... | | 5-6 Figure 5-4 [ ]bC ........................... |
| 5-6Figure 5-3 [ ]b.c .......................................... | | 5-7 Figure 5-5 [ bc .......................... |
| 5-6Figure 5-4 [ ]bC ........................... | | 5-8 Figure 5-6 [ ]b.C ................... |
| 5-7Figure 5-5 [ bc .......................... | | 5-8 Figure 5-7 [ ]bC ............................... |
| 5-8Figure 5-6 [ ]b.C ................... | | 5-9 Figure 5-8 [ ]bc ................... |
| 5-8Figure 5-7 [ ]bC ............................... | | 5-12 Figure 5-9 [b C ................................................................. |
| 5-9Figure 5-8 [ ]bc ................... | | 5 -13 Figure 5-10 []b ................................................................................... |
| 5-12Figure 5-9 [b C ................................................................. | | 5 -14 Figure 5-11 []b,c ........................................................................... |
| 5 -13Figure 5-10 []b ................................................................................... | | 5 -15 Figure 5-12 CLTP and Predicted EPU Signals, M SL A US .................................................................... |
| 5 -14Figure 5-11 []b,c ........................................................................... | | 5-16 Figure 5-13 CLTP and Predicted EPU Signals, M SL A DS .................................................................... |
| 5 -15Figure 5-12 CLTP and Predicted EPU Signals, M SL A US .................................................................... | | 5-16 Figure 5-14 CLTP and Predicted EPU Signals, M SL B US .................................................................... |
| 5-16Figure 5-13 CLTP and Predicted EPU Signals, M SL A DS .................................................................... | | 5-17 Figure 5-15 CLTP and Predicted EPU Signals, M SL B DS .................................................................... |
| 5-16Figure 5-14 CLTP and Predicted EPU Signals, M SL B US .................................................................... | | 5-17 Figure 5-16 CLTP and Predicted EPU Signals, M SL C US .................................................................... |
| 5-17Figure 5-15 CLTP and Predicted EPU Signals, M SL B DS .................................................................... | | 5-18 Figure 5-17 CLTP and Predicted EPU Signals, M SL C DS .................................................................... |
| 5-17Figure 5-16 CLTP and Predicted EPU Signals, M SL C US .................................................................... | | 5-18 Figure 5-18 CLTP and Predicted EPU Signals, M SL D US ................................................................... |
| 5-18Figure 5-17 CLTP and Predicted EPU Signals, M SL C DS .................................................................... | | 5-19 WCAP-17548-NP August 2013 Revision 2 V I Figure 5-19 CLTP and Predicted EPU Signals, M SL D DS ................................................................... |
| 5-18Figure 5-18 CLTP and Predicted EPU Signals, M SL D US ................................................................... | | 5-19 WCAP-17548-NP August 2013 Revision 2 vi EXECUTIVE |
| 5-19WCAP-17548-NP August 2013Revision 2 | | |
| VI Figure 5-19 CLTP and Predicted EPU Signals, M SL D DS ...................................................................
| | ==SUMMARY== |
| 5-19WCAP-17548-NP August 2013Revision 2 | | Monticello Nuclear generating plant (MNGP, herein referred to as "Monticello") |
| viEXECUTIVE SUMMARYMonticello Nuclear generating plant (MNGP, herein referred to as "Monticello")
| | is implementing an extended power uprate (EPU) to increase plant power from current licensed thermal power (CLTP) of]ab To satisfy the requirements of the United States Nuclear Regulatory Commission (NRC) Regulatory Guide 1.20, Revision 3 (Reference 1), an analysis must be performed to demonstrate the structural integrity of reactor internal components, []a,c I]a.c II pac I pc.WCAP-17548-NP August 2013 Revision 2 vii LIST OF ACRONYMS AND ABBREVIATIONS AC alternating current ACE Acoustic Circuit Enhanced BWR boiling water reactor CDI Continuum Dynamics, Inc.CLTP current licensed thermal power DAS data acquisition system DS downstream (used only in figures and tables)EIC electrical interference check EPU extended power uprate GE General Electric MNGP Monticello Nuclear Generating Plant MSL main steam line NRC Nuclear Regulatory Commission OEM original equipment manufacturer PCF pressure conversion factor PSD power spectral density RMS root mean square RPV reactor pressure vessel RRP reactor recirculation pump RSD replacement steam dryer SIA Structural Integrity Associates SNR signal-to-noise ratio SRV safety relief valve STFT Short-time Fourier transform SURE Stein's unbiased risk estimator US upstream (used only in figures and tables)Trademark Note VersaDAS is a registered trademark of Structural Integrity Associates. |
| is implementing anextended power uprate (EPU) to increase plant power from current licensed thermal power (CLTP) of]ab To satisfy the requirements of the United States Nuclear Regulatory Commission (NRC) Regulatory Guide 1.20, Revision 3(Reference 1), an analysis must be performed to demonstrate the structural integrity of reactor internalcomponents, | | Other names may be trademarks of their respective owners.WCAP-17548-NP August 2013 Revision 2 1-1 1 |
| []a,cI]a.cIIpacIpc.WCAP-17548-NP August 2013Revision 2 | | |
| viiLIST OF ACRONYMS AND ABBREVIATIONS AC alternating currentACE Acoustic Circuit EnhancedBWR boiling water reactorCDI Continuum
| | ==1.1 BACKGROUND== |
| : Dynamics, Inc.CLTP current licensed thermal powerDAS data acquisition systemDS downstream (used only in figures and tables)EIC electrical interference checkEPU extended power uprateGE General ElectricMNGP Monticello Nuclear Generating PlantMSL main steam lineNRC Nuclear Regulatory Commission OEM original equipment manufacturer PCF pressure conversion factorPSD power spectral densityRMS root mean squareRPV reactor pressure vesselRRP reactor recirculation pumpRSD replacement steam dryerSIA Structural Integrity Associates SNR signal-to-noise ratioSRV safety relief valveSTFT Short-time Fourier transform SURE Stein's unbiased risk estimator US upstream (used only in figures and tables)Trademark NoteVersaDAS is a registered trademark of Structural Integrity Associates.
| | |
| Other names may be trademarks oftheir respective owners.WCAP-17548-NP August 2013Revision 2 | | AND INTRODUCTION BACKGROUND OF ACOUSTIC ISSUES AND REQUIREMENTS |
| 1-111.1BACKGROUND AND INTRODUCTION BACKGROUND OF ACOUSTIC ISSUES AND REQUIREMENTS | | []a,c NRC Regulatory Guide 1.20, Rev. 3 (Reference 1), contains requirements for demonstrating the structural integrity of the steam dryer at power levels higher than CLTP. []ac WCAP-17548-NP August 2013 Revision 2 1-2 1.2 REPLACEMENT OF THE STEAM DRYER I]a.bc a,c Figure 1-1 Schematic of Replacement Steam Dryer I []a~b.c I abc WCAP-1 7548-NP August 2013 WCAP-17548-NP August 2013 Revision 2 1-3 1.3 PURPOSE This report details the signal processing methods used for processing MSL strain gauge data, and the RSD instrumentation data gathered to support the benchrnarking of the Acoustic Circuit Enhanced (ACE)technique used to qualify the steam dryer for acoustic loads at EPU operating conditions. |
| []a,cNRC Regulatory Guide 1.20, Rev. 3 (Reference 1), contains requirements for demonstrating the structural integrity of the steam dryer at power levels higher than CLTP. []acWCAP-17548-NP August 2013Revision 2 | | To this end, a summary of the data collection and recorded data at Monticello is contained in this document.Furthermore, specific datasets are shown and discussed in detail with regard to the signal processing performed. |
| 1-21.2 REPLACEMENT OF THE STEAM DRYERI]a.bca,cFigure 1-1 Schematic of Replacement Steam DryerI []a~b.cIabcWCAP-1 7548-NP August 2013WCAP-17548-NP August 2013Revision 2 | | The intention of presenting these data is to demonstrate the effect, and support the use, of the signal processing described herein.This report also details the methods applied to the processed CLTP acoustic signature to create a predicted EPU signature. |
| 1-31.3 PURPOSEThis report details the signal processing methods used for processing MSL strain gauge data, and the RSDinstrumentation data gathered to support the benchrnarking of the Acoustic Circuit Enhanced (ACE)technique used to qualify the steam dryer for acoustic loads at EPU operating conditions. | | WCAP-1 7548-NP August 2013 WCAP-17548-NP August 2013 Revision 2 2-1 2 2.1 |
| To this end, asummary of the data collection and recorded data at Monticello is contained in this document. | | |
| Furthermore, specific datasets are shown and discussed in detail with regard to the signal processing performed. | | ==SUMMARY== |
| The intention of presenting these data is to demonstrate the effect, and support the use, of thesignal processing described herein.This report also details the methods applied to the processed CLTP acoustic signature to create a predicted EPU signature. | | OF PREVIOUS WORK ACOUSTIC SCREENING I ia,b,c 2.2 SUBSCALE TESTING I laoc I]abc Table 2-1 Natural Frequency of I ]b Natural Frequencies Plant Predicted ( Reference |
| WCAP-1 7548-NP August 2013WCAP-17548-NP August 2013Revision 2 | | : 2) [ ]flC (Reference 4)Sidebranch Freq., Hz Difference Freq., Hz Difference Freq., Hz t I b 2.3 PREVIOUS DATA RECORDINGS |
| 2-122.1SUMMARY OF PREVIOUS WORKACOUSTIC SCREENING Iia,b,c2.2 SUBSCALE TESTINGIlaocI]abcTable 2-1 Natural Frequency of I ]bNatural Frequencies PlantPredicted | | [I[I jac]ab~c WCAP-I 7548-NP August 2013 WCAP-17548-NP August 2013 Revision 2 2-2 ia,b,c]a b.c 2.4 DERIVATION OF INSTRUMENTATION LOCATIONS I 1a3c ac Figure 2-1 Schematic of MSL I rb,c WCAP- 17548-NP August 2013 Revision 2 2-3[]a,c Table 2-2 I H m I.c a,b,c I]a,c I jac a,b,c Figure 2-2 Schematic of [a,b,c WCAP- 17548-NP August 2013 Revision 2 2-4 Figure 2-3 through Figure 2-5 show schematic views of the RSD with the strain gauge locations indicated. |
| ( Reference | | The view angle is looking slightly down from above and outside the dryer, similar to the view in the overall dryer schematic seen in Figure 1-1.a,b,c Figure 2-3 Schematic of Figure 2-4 Schematic of [a,b,c a,b,c a,b,c WCAP-! 7548-flP August 2013 Revision 2 2-5 a,b,c Figure 2-5 Schematic of[I]abc a,b,c Figure 2-6 Schematic of I Ia,b,c WCAP-17548-NP August 2013 Revision 2 2-6 a,b,c Figure 2-7 Schematic of I la,b,c[]a,c WCAP- 17548-NP August 2013 Revision 2 3-1 3 DATA COLLECTION AND PROCESSING PLAN The following sections detail the data collection and processing performed on the recorded time histories from Monticello. |
| : 2) [ ]flC (Reference 4)Sidebranch Freq., Hz Difference Freq., Hz Difference Freq., HztI b2.3 PREVIOUS DATA RECORDINGS | | The processing documented in this report applied to the May 2011 100% CLTP Monticello data and 90% CLTP Monticello data is in Reference |
| [I[Ijac]ab~cWCAP-I 7548-NP August 2013WCAP-17548-NP August 2013Revision 2 | | : 8. The processing documented in this report applied to the remaining Monticello data is in Reference 4 and Reference 7.3.1 DATA ACQUISITION AND SIGNAL VALIDITY II]31C]a,c I Table 3-1 I 1C I-- a,c WCAP- 17548-NP August 2013 Revision 2 3-2 II] axc-Table 3-2 1 Ba,c a,c I]a,c Table 3-3 1 i8,C a,c I Table 3-4 1 I RX flc a,c WCAP-17548-NP August 2013 Revision 2 3-3 ia,b,c a,b,c 3.2 DATA PROCESSING OVERVIEW I WCAP-1 7548-NP August 2013 WCAP- 17548-NP August 2013 Revision 2 3-4 3.3 STRAIN TO PRESSURE CONVERSION |
| 2-2ia,b,c]a b.c2.4 DERIVATION OF INSTRUMENTATION LOCATIONS I1a3cacFigure 2-1 Schematic of MSL Irb,cWCAP- 17548-NPAugust 2013Revision 2 | | -MSL STRAIN GAUGE DATA]ax L a,c j (3-1)where,[[I]alc]ac]a,c a,c Figure 3-1 Pipe Mode Diagram, N=[0,41 II]a,c WCAP-17548-NP August 2013 Revision 2 3-5 I]aoc L]a,c (3-2)where,[[[]a,c]a,c]a,c I]a,c 3.4 NARROW-BAND FILTERING I]ac I]ac WCAP- 17548-NP August 2013 Revision 2 3-6 3.5 PSD DERIVATION The PSDs used in the methods presented in this report were derived using Welch's modified periodogram method. The signal was divided up into time ensembles with the same number of lines as the sampling frequency, resulting in a 1 Hz frequency resolution in the final PSD. A Harming window was used to reduce spectral leakage, and 50 percent overlap was used to increase the number of ensembles available for averaging. |
| 2-3[]a,cTable 2-2IH mI.ca,b,cI]a,cIjaca,b,cFigure 2-2 Schematic of [a,b,cWCAP- 17548-NPAugust 2013Revision 2 | | |
| 2-4Figure 2-3 through Figure 2-5 show schematic views of the RSD with the strain gauge locations indicated. | | ===3.6 WAVELET=== |
| The view angle is looking slightly down from above and outside the dryer, similar to the viewin the overall dryer schematic seen in Figure 1-1.a,b,cFigure 2-3 Schematic ofFigure 2-4 Schematic of [a,b,ca,b,ca,b,cWCAP-! 7548-flPAugust 2013Revision 2 | | DENOISING II]a,c I]a,C I]ac I 1.2.3.[I IC IC I IC WCAP-17548-NP August 2013 Revision 2 3-7 I I c I]C I C (3-3)where,[[Ic I]a.c I] C 3.7 COMPUTATION OF THE PREDICTED EPU SIGNAL I]ac I]a3c WCAP- I 7548-NP August 2013 WCAP- 17548-NP August 2013 Revision 2 4-1 4 INPUTS TO SIGNAL PROCESSING AND ASSUMPTIONS 4.1 INPUTS]a,c]a,c 4.2 ASSUMPTIONS The acoustic speed in steam is assumed to be 1,600 ft/s per Reference 12.[] C] ax I pac[]a,c la,c WCAP-1 7548-NP August 2013 WCAP-17548-NP August 2013 Revision 2 5-1 5 5.1 DISCUSSION OF RESULTS DATA RECORDING I]a,c STable 5-1 Transducers and Units Transducer Units L a,c I]a,c I]abxc WCAP-17548-NP August 2013 Revision 2 5-2 Table 5-2 Dates and Times of Data Recording Recording |
| 2-5a,b,cFigure 2-5 Schematic of[I]abca,b,cFigure 2-6 Schematic of IIa,b,cWCAP-17548-NP August 2013Revision 2 | | %CLTP Date Time Filename b II]a,c I. [WCAP-17548-NP August 2013 Revision 2 5-3]ac 2.]a~c 3.]a,c]a,c a,c a,c Figure 5-1 Examples of Transients in Data ia,b,c WCAP-17548-NP August 2013 Revision 2 5-4 II]a,b,c I]abc 5.2 STRAIN TO PRESSURE CONVERSION II]a,c I]ac b WCAP- 17548-NP August 2013 Revision 2 5-5 Table 5-4 shows a summary of the removed channels for each of the MSL strain gauge files.I Table 5-4 1 ]8,C I Recording |
| 2-6a,b,cFigure 2-7 Schematic of Ila,b,c[]a,cWCAP- 17548-NPAugust 2013Revision 2 | | % CLTP Date Stamp Time Selection Removed Channels 1 b I]a,c WCAP- 17548-NP August 2013 Revision 2 5-6 I]a,b,c a,b,c I Figure 5-2 Figure 5-3 [b,c]a,b,c a,b,c b,c WCAP-17548-NP August 2013 Revision 2 5-7 I]a.bc I a,b,c I ja,b,c a,b,c Figure 5-4 [b,c II]ab.c I a,b,c WCAP-17548-NP ARigust 2013 Revision 2 5-8 a,b,c a,b,c Figure 5-5 [Figure 5-6 1 b,c b,c I a.,b.c WCAP- I 7548-NP August 2013 WCAP- 17548-NP August 2013 Revision 2 5-9 a,b,c Figure 5-7 jb,c I a,b,c WCAP- I 7548-NP August 2013 WCAP-17548-NP August 2013 Revision 2 5-10 5.3 FILTERING I]a,c Table 5-5 Summary of Narrow-Band Filters a,b,c WCAP-17548-NP August 2013 Revision 2 5-11 Table 5-5 Summary of Narrow-Band Filters (cont.)a,b,c I]ab.c WCAP-1 7548-NP August 2013 Revision 2 5-12 b Figure 5-8 b,c I a,b,c WCAP- 1 7548-NP August 2013 Revision 2 5-13 5.4 WAVELET DENOISING[]ac I]ac II]C a,b,c Figure 5-9 [I b,c WCAP- 17548-NP August 2013 Revision 2 5-14 IIC a,b,c Figure 5-10 b,c WCAP-17548-NP August 2013 Revision 2 5-15 a,b,c Figure 5-11 1 5.5 PREDICTED EPU SIGNAL I i b.c pac WCAP- 17548-NP August 2013 Revision 2 5-16 b Figure 5-12 CLTP and Predicted EPU Signals, MSL A US b Figure 5-13 CLTP and Predicted EPU Signals, MSL A DS WCAP- 17548-NP August 2013 Revision 2 5-17 b Figure 5-14 CLTP and Predicted EPU Signals, MSL B US b Figure 5-15 CLTP and Predicted EPU Signals, MSL B DS WCAP-17548-NP August 2013 Revision 2 5-18 b Figure 5-16 CLTP and Predicted EPU Signals, MSL C US b Figure 5-17 CLTP and Predicted EPU Signals, MSL C DS WCAP- I 7548-NP August 2013 WCAP- 17548-NP August 2013 Revision 2 5-19 b Figure 5-18 CLTP and Predicted EPU Signals, MSL D US b Figure 5-19 CLTP and Predicted EPU Signals, MSL D DS WCAP- 1 7548-NP August 2013 WCAP-17548-NP AugRist 2013 Revision 2 6-1 6 CONCLUSIONS |
| 3-13 DATA COLLECTION AND PROCESSING PLANThe following sections detail the data collection and processing performed on the recorded time histories from Monticello. | | ]a~b,c The processing steps that define this methodology and that are fully detailed in Reference 8 and summarized in this document can be listed as follows: 1. [2.3. [4. []a,c]a,c]a,c The resulting datasets are the best available representation of the actual plant data with minimal signature influence from background and noise contributions. |
| The processing documented in this report applied to the May 2011 100% CLTPMonticello data and 90% CLTP Monticello data is in Reference | | ]a,c WCAP-17548-NP August 2013 Revision 2 7-1 7 REFERENCES |
| : 8. The processing documented in thisreport applied to the remaining Monticello data is in Reference 4 and Reference 7.3.1 DATA ACQUISITION AND SIGNAL VALIDITYII]31C]a,cITable 3-1 I 1C I-- a,cWCAP- 17548-NPAugust 2013Revision 2 | | : 1. United States Nuclear Regulatory Commission Regulatory Guide 1.20, Rev. 3, "Comprehensive Vibration Assessment Program for Reactor Internals During Preoperational and Initial Startup Testing," March 2007.2. []a,c 3. [4.5.6.a,c]a,c]a,c]a,c 7. []a,c 8. []a.c 9. [pc 10. Jacob Benesty, M. Mohan Sondhi, and Yiteng Huang (Eds.), Springer Handbook of Speech Processing, Springer, Berlin, 2008.11. 0. Cappe, "Elimination of the Musical Noise Phenomenon with the Ephraim and Malah Noise Suppressor," IEEE Transactions of Speech and Audio Processing (April 1994): Vol. 2, 345-349.12. ASME, "ASME Steam Tables," Fifth Edition, 1983.13. []a,c WCAP-17548-NP August 2013 Revision 2 7-2 14. Structural Integrity Associates Calculation Package, MONT- I1Q-303, Rev. 1, "Monticello Main Steam Strain Gage Data Reduction," January 21, 2009.15. Xcel Energy Design Information Transmittal, DIT 13638-10, "Extended Power Uprate Implementation," June 24, 2011.WCAP-17548-NP August 2013 Revision 2}} |
| 3-2II] axc-Table 3-2 1Ba,ca,cI]a,cTable 3-3 1i8,Ca,cITable 3-4 1I RXflca,cWCAP-17548-NP August 2013Revision 2 | |
| 3-3ia,b,ca,b,c3.2 DATA PROCESSING OVERVIEWIWCAP-1 7548-NP August 2013WCAP- 17548-NPAugust 2013Revision 2 | |
| 3-43.3 STRAIN TO PRESSURE CONVERSION | |
| -MSL STRAIN GAUGE DATA]axLa,cj (3-1)where,[[I]alc]ac]a,ca,cFigure 3-1 Pipe Mode Diagram, N=[0,41II]a,cWCAP-17548-NP August 2013Revision 2 | |
| 3-5I]aocL]a,c(3-2)where,[[[]a,c]a,c]a,cI]a,c3.4 NARROW-BAND FILTERING I]acI]acWCAP- 17548-NPAugust 2013Revision 2 | |
| 3-63.5 PSD DERIVATION The PSDs used in the methods presented in this report were derived using Welch's modified periodogram method. The signal was divided up into time ensembles with the same number of lines as the samplingfrequency, resulting in a 1 Hz frequency resolution in the final PSD. A Harming window was used toreduce spectral | |
| : leakage, and 50 percent overlap was used to increase the number of ensembles available for averaging.
| |
| 3.6 WAVELET DENOISING II]a,cI]a,CI]acI1.2.3.[IICICIICWCAP-17548-NP August 2013Revision 2 | |
| 3-7II cI]CIC(3-3)where,[[IcI]a.cI] C3.7 COMPUTATION OF THE PREDICTED EPU SIGNALI]acI]a3cWCAP- I 7548-NP August 2013WCAP- 17548-NPAugust 2013Revision 2 | |
| 4-14 INPUTS TO SIGNAL PROCESSING AND ASSUMPTIONS 4.1 INPUTS]a,c]a,c4.2 ASSUMPTIONS The acoustic speed in steam is assumed to be 1,600 ft/s per Reference 12.[] C] axIpac[]a,cla,cWCAP-1 7548-NP August 2013WCAP-17548-NP August 2013Revision 2 | |
| 5-155.1DISCUSSION OF RESULTSDATA RECORDING I]a,cSTable 5-1Transducers and UnitsTransducer UnitsLa,cI]a,cI]abxcWCAP-17548-NP August 2013Revision 2 | |
| 5-2Table 5-2 Dates and Times of Data Recording Recording | |
| %CLTPDate TimeFilenamebII]a,cI. [WCAP-17548-NP August 2013Revision 2 | |
| 5-3]ac2.]a~c3.]a,c]a,ca,ca,cFigure 5-1 Examples of Transients in Dataia,b,cWCAP-17548-NP August 2013Revision 2 | |
| 5-4II]a,b,cI]abc5.2 STRAIN TO PRESSURE CONVERSION II]a,cI]acbWCAP- 17548-NPAugust 2013Revision 2 | |
| 5-5Table 5-4 shows a summary of the removed channels for each of the MSL strain gauge files.I Table 5-4 1 ]8,CI Recording | |
| % CLTPDate Stamp Time Selection Removed Channels 1bI]a,cWCAP- 17548-NPAugust 2013Revision 2 | |
| 5-6I]a,b,ca,b,cIFigure 5-2Figure 5-3 [b,c]a,b,ca,b,cb,cWCAP-17548-NP August 2013Revision 2 | |
| 5-7I]a.bcIa,b,cIja,b,ca,b,cFigure 5-4 [b,cII]ab.cIa,b,cWCAP-17548-NP ARigust 2013Revision 2 | |
| 5-8a,b,ca,b,cFigure 5-5 [Figure 5-6 1b,cb,cIa.,b.cWCAP- I 7548-NP August 2013WCAP- 17548-NPAugust 2013Revision 2 | |
| 5-9a,b,cFigure 5-7jb,cIa,b,cWCAP- I 7548-NP August 2013WCAP-17548-NP August 2013Revision 2 | |
| 5-105.3 FILTERING I]a,cTable 5-5Summary of Narrow-Band Filtersa,b,cWCAP-17548-NP August 2013Revision 2 | |
| 5-11Table 5-5 Summary of Narrow-Band Filters (cont.)a,b,cI]ab.cWCAP-1 7548-NPAugust 2013Revision 2 | |
| 5-12bFigure 5-8b,cIa,b,cWCAP- 1 7548-NPAugust 2013Revision 2 | |
| 5-135.4 WAVELET DENOISING | |
| []acI]acII]Ca,b,cFigure 5-9 [I b,cWCAP- 17548-NPAugust 2013Revision 2 | |
| 5-14IICa,b,cFigure 5-10b,cWCAP-17548-NP August 2013Revision 2 | |
| 5-15a,b,cFigure 5-11 15.5 PREDICTED EPU SIGNALIi b.cpacWCAP- 17548-NPAugust 2013Revision 2 | |
| 5-16bFigure 5-12 CLTP and Predicted EPU Signals, MSL A USbFigure 5-13 CLTP and Predicted EPU Signals, MSL A DSWCAP- 17548-NPAugust 2013Revision 2 | |
| 5-17bFigure 5-14 CLTP and Predicted EPU Signals, MSL B USbFigure 5-15 CLTP and Predicted EPU Signals, MSL B DSWCAP-17548-NP August 2013Revision 2 | |
| 5-18bFigure 5-16 CLTP and Predicted EPU Signals, MSL C USbFigure 5-17 CLTP and Predicted EPU Signals, MSL C DSWCAP- I 7548-NP August 2013WCAP- 17548-NPAugust 2013Revision 2 | |
| 5-19bFigure 5-18 CLTP and Predicted EPU Signals, MSL D USbFigure 5-19 CLTP and Predicted EPU Signals, MSL D DSWCAP- 1 7548-NP August 2013WCAP-17548-NP AugRist 2013Revision 2 | |
| 6-16 CONCLUSIONS | |
| ]a~b,cThe processing steps that define this methodology and that are fully detailed in Reference 8 andsummarized in this document can be listed as follows:1. [2.3. [4. []a,c]a,c]a,cThe resulting datasets are the best available representation of the actual plant data with minimal signature influence from background and noise contributions. | |
| ]a,cWCAP-17548-NP August 2013Revision 2 | |
| 7-17 REFERENCES | |
| : 1. United States Nuclear Regulatory Commission Regulatory Guide 1.20, Rev. 3, "Comprehensive Vibration Assessment Program for Reactor Internals During Preoperational and Initial StartupTesting," | |
| March 2007.2. []a,c3. [4.5.6.a,c]a,c]a,c]a,c7. []a,c8. []a.c9. [pc10. Jacob Benesty, M. Mohan Sondhi, and Yiteng Huang (Eds.), Springer Handbook of SpeechProcessing, | |
| : Springer, Berlin, 2008.11. 0. Cappe, "Elimination of the Musical Noise Phenomenon with the Ephraim and Malah NoiseSuppressor,"
| |
| IEEE Transactions of Speech and Audio Processing (April 1994): Vol. 2, 345-349.12. ASME, "ASME Steam Tables," | |
| Fifth Edition, 1983.13. []a,cWCAP-17548-NP August 2013Revision 2 | |
| 7-214. Structural Integrity Associates Calculation | |
| : Package, MONT- I1Q-303, Rev. 1, "Monticello MainSteam Strain Gage Data Reduction,"
| |
| January 21, 2009.15. Xcel Energy Design Information Transmittal, DIT 13638-10, "Extended Power UprateImplementation," | |
| June 24, 2011.WCAP-17548-NP August 2013Revision 2}} | |
Letter Sequence Other |
---|
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
|
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] |
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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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{{#Wiki_filter:L-MT-1 3-091 ENCLOSURE 10 WESTINGHOUSE WCAP-17548-NP, (NONPROPRIETARY)
REVISION 2 SIGNAL PROCESSING PERFORMED ON MONTICELLO MSL STRAIN GAUGE AND RSD INSTRUMENTATION DATA 47 pages follow Westinghouse Non-Proprietary Class 3 WCAP-17548-NP Revision 2 Signal Processing Pe on Monticello MSL St Gauge and RSD Instrumentation Data)Westinghouse August 2013 rformed rain WESTINGHOUSE NON-PROPRIETARY CLASS 3 WCAP-17548-NP Revision 2 Signal Processing Performed on Monticello MSL Strain Gauge and RSD Instrumentation Data AnnMarie Rowland*U.S. BWR Engineering August 2013 Reviewer:
Inessa E. Berman*U.S. BWR Engineering Approved:
Daniel T. McLaughlin*, Manager U.S. BWR Engineering
- Electronically approved records are authenticated in the electronic document management system.Westinghouse Electric Company LLC 1000 Westinghouse Drive Cranberry Township, PA 16066, USA© 2013 Westinghouse Electric Company LLC All Rights Reserved WCAP-17548-NP TABLE OF CONTENTS LIST OF TABLES .......................................................................................................................................
iii LIST OF FIGURES .....................................................................................................................................
iv EXECUTIVE SUM M ARY ..........................................................................................................................
vi LIST OF ACRONYM S AND ABBREVIATIONS
.................................................................................
vii BACKGROUN D AN D INTRODUCTION
..................................................................................
1-1
1.1 BACKGROUND
OF ACOUSTIC ISSUES AND REQUIREMENTS
...........................
1-1 1.2 REPLACEM ENT OF THE STEAM DRYER .................................................................
1-2 1.3 PURPOSE ........................................................................................................................
1-3 2 SUM M ARY OF PREVIOUS W ORK ..........................................................................................
2-1 2.1 ACOUSTIC SCREENING
.........................................................................................
2-1 2.2 SUBSCALE TESTING ...................................................................................................
2-1 2.3 PREVIOUS DATA RECORDINGS
................................................................................
2-1 2.4 DERIVATION OF INSTRUMENTATION LOCATIONS
..............................................
2-2 3 DATA COLLECTION AND PROCESSING PLAN ....................................................................
3-1 3.1 DATA ACQUISITION AND SIGNAL VALIDITY ........................................................
3-1 3.2 DATA PROCESSING OVERVIEW ................................................................................
3-3 3.3 STRAIN TO PRESSURE CONVERSION
-MSL STRAIN GAUGE DATA ................
3-4 3.4 NARROW -BAND FILTERING
......................................................................................
3-5 3.5 PSD DERIVATION
.........................................................................................................
3-6 3.6 W AVELET DENOISING
................................................................................................
3-6 3.7 COMPUTATION OF THE PREDICTED EPU SIGNAL ...............................................
3-7 4 INPUTS TO SIGNAL PROCESSING AND ASSUMPTIONS
....................................................
4-1 4.1 IN PUTS ...........................................................................................................................
4-1 4.2 ASSUM PTION S ..............................................................................................................
4-1 5 DISCUSSION OF RESULTS ..................................................................................................
5-1 5.1 DATA RECORDING
.......................................................................................................
5-1 5.2 STRAIN TO PRESSURE CONVERSION
.....................................................................
5-4 5.3 FILTERING
...................................................................................................................
5-10 5.4 W AVELET DENOISING
..............................................................................................
5-13 5.5 PREDICTED EPU SIGNAL .........................................................................................
5-15 6 CONCLUSIONS
..........................................................................................................................
6-1 7 RE FERE NCES .............................................................................................................................
7-1 WCAP-17548-NP August 2013 Revision 2 iii LIST OF TABLES Table 2-1 Table 2-2 Table 3-1 Table 3-2 Table 3-3 Table 3-4 Table 5-1 Table 5-2 Table 5-3 Table 5-4 Table 5-5 Natural Frequency of [.]b ......................................................................
2-1............................................................................................
2 -3[ ]ax .............................
3-1[]a' ...................
].........................................
3 -2[ ]a,c ...........................................
3-2[ ]a,c .................................................
3-2 Transducers and Units ......................................................................................................
5-1 Dates and Tim es of Data Recording
................................................................................
5-2[ ]a,c ...................................................................
5 -4[ax ....................
5-5 Sum mary of Narrow-Band Filters .................................................................................
5-10 WCAP-17548-NP August 2013 Revision 2 iv LIST OF FIGURES Figure 1-1 Schematic of Replacement Steam Dryer .................................................................................
1-2 Figure 2-1 Schematic of M SL [],b,c .........................................................
2-2 Figure 2-2 Schematic of [ ]a,b,c ........................................................
2-3 Figure 2-3 Schematic of [ ]a,b,c ...............
2-4 Figure 2-4 Schematic of [ ]a,b~c .........
2-4 Figure 2-5 Schematic of [ ]abc...........
........ 2-5 Figure 2-6 Schematic of [ .bc...............................................
2-5 Figure 2-7 Schematic of [ ]ab ................
2-6 Figure 3-1 Pipe Mode Diagram, N=[0,4] ..................................................................................................
3-4 Figure 5-1 Examples of Transients in Data ...............................................................................................
5-3 Figure 5-2 [ ]bC .....................................
5-6 Figure 5-3 [ ]b.c ..........................................
5-6 Figure 5-4 [ ]bC ...........................
5-7 Figure 5-5 [ bc ..........................
5-8 Figure 5-6 [ ]b.C ...................
5-8 Figure 5-7 [ ]bC ...............................
5-9 Figure 5-8 [ ]bc ...................
5-12 Figure 5-9 [b C .................................................................
5 -13 Figure 5-10 []b ...................................................................................
5 -14 Figure 5-11 []b,c ...........................................................................
5 -15 Figure 5-12 CLTP and Predicted EPU Signals, M SL A US ....................................................................
5-16 Figure 5-13 CLTP and Predicted EPU Signals, M SL A DS ....................................................................
5-16 Figure 5-14 CLTP and Predicted EPU Signals, M SL B US ....................................................................
5-17 Figure 5-15 CLTP and Predicted EPU Signals, M SL B DS ....................................................................
5-17 Figure 5-16 CLTP and Predicted EPU Signals, M SL C US ....................................................................
5-18 Figure 5-17 CLTP and Predicted EPU Signals, M SL C DS ....................................................................
5-18 Figure 5-18 CLTP and Predicted EPU Signals, M SL D US ...................................................................
5-19 WCAP-17548-NP August 2013 Revision 2 V I Figure 5-19 CLTP and Predicted EPU Signals, M SL D DS ...................................................................
5-19 WCAP-17548-NP August 2013 Revision 2 vi EXECUTIVE
SUMMARY
Monticello Nuclear generating plant (MNGP, herein referred to as "Monticello")
is implementing an extended power uprate (EPU) to increase plant power from current licensed thermal power (CLTP) of]ab To satisfy the requirements of the United States Nuclear Regulatory Commission (NRC) Regulatory Guide 1.20, Revision 3 (Reference 1), an analysis must be performed to demonstrate the structural integrity of reactor internal components, []a,c I]a.c II pac I pc.WCAP-17548-NP August 2013 Revision 2 vii LIST OF ACRONYMS AND ABBREVIATIONS AC alternating current ACE Acoustic Circuit Enhanced BWR boiling water reactor CDI Continuum Dynamics, Inc.CLTP current licensed thermal power DAS data acquisition system DS downstream (used only in figures and tables)EIC electrical interference check EPU extended power uprate GE General Electric MNGP Monticello Nuclear Generating Plant MSL main steam line NRC Nuclear Regulatory Commission OEM original equipment manufacturer PCF pressure conversion factor PSD power spectral density RMS root mean square RPV reactor pressure vessel RRP reactor recirculation pump RSD replacement steam dryer SIA Structural Integrity Associates SNR signal-to-noise ratio SRV safety relief valve STFT Short-time Fourier transform SURE Stein's unbiased risk estimator US upstream (used only in figures and tables)Trademark Note VersaDAS is a registered trademark of Structural Integrity Associates.
Other names may be trademarks of their respective owners.WCAP-17548-NP August 2013 Revision 2 1-1 1
1.1 BACKGROUND
AND INTRODUCTION BACKGROUND OF ACOUSTIC ISSUES AND REQUIREMENTS
[]a,c NRC Regulatory Guide 1.20, Rev. 3 (Reference 1), contains requirements for demonstrating the structural integrity of the steam dryer at power levels higher than CLTP. []ac WCAP-17548-NP August 2013 Revision 2 1-2 1.2 REPLACEMENT OF THE STEAM DRYER I]a.bc a,c Figure 1-1 Schematic of Replacement Steam Dryer I []a~b.c I abc WCAP-1 7548-NP August 2013 WCAP-17548-NP August 2013 Revision 2 1-3 1.3 PURPOSE This report details the signal processing methods used for processing MSL strain gauge data, and the RSD instrumentation data gathered to support the benchrnarking of the Acoustic Circuit Enhanced (ACE)technique used to qualify the steam dryer for acoustic loads at EPU operating conditions.
To this end, a summary of the data collection and recorded data at Monticello is contained in this document.Furthermore, specific datasets are shown and discussed in detail with regard to the signal processing performed.
The intention of presenting these data is to demonstrate the effect, and support the use, of the signal processing described herein.This report also details the methods applied to the processed CLTP acoustic signature to create a predicted EPU signature.
WCAP-1 7548-NP August 2013 WCAP-17548-NP August 2013 Revision 2 2-1 2 2.1
SUMMARY
OF PREVIOUS WORK ACOUSTIC SCREENING I ia,b,c 2.2 SUBSCALE TESTING I laoc I]abc Table 2-1 Natural Frequency of I ]b Natural Frequencies Plant Predicted ( Reference
- 2) [ ]flC (Reference 4)Sidebranch Freq., Hz Difference Freq., Hz Difference Freq., Hz t I b 2.3 PREVIOUS DATA RECORDINGS
[I[I jac]ab~c WCAP-I 7548-NP August 2013 WCAP-17548-NP August 2013 Revision 2 2-2 ia,b,c]a b.c 2.4 DERIVATION OF INSTRUMENTATION LOCATIONS I 1a3c ac Figure 2-1 Schematic of MSL I rb,c WCAP- 17548-NP August 2013 Revision 2 2-3[]a,c Table 2-2 I H m I.c a,b,c I]a,c I jac a,b,c Figure 2-2 Schematic of [a,b,c WCAP- 17548-NP August 2013 Revision 2 2-4 Figure 2-3 through Figure 2-5 show schematic views of the RSD with the strain gauge locations indicated.
The view angle is looking slightly down from above and outside the dryer, similar to the view in the overall dryer schematic seen in Figure 1-1.a,b,c Figure 2-3 Schematic of Figure 2-4 Schematic of [a,b,c a,b,c a,b,c WCAP-! 7548-flP August 2013 Revision 2 2-5 a,b,c Figure 2-5 Schematic of[I]abc a,b,c Figure 2-6 Schematic of I Ia,b,c WCAP-17548-NP August 2013 Revision 2 2-6 a,b,c Figure 2-7 Schematic of I la,b,c[]a,c WCAP- 17548-NP August 2013 Revision 2 3-1 3 DATA COLLECTION AND PROCESSING PLAN The following sections detail the data collection and processing performed on the recorded time histories from Monticello.
The processing documented in this report applied to the May 2011 100% CLTP Monticello data and 90% CLTP Monticello data is in Reference
- 8. The processing documented in this report applied to the remaining Monticello data is in Reference 4 and Reference 7.3.1 DATA ACQUISITION AND SIGNAL VALIDITY II]31C]a,c I Table 3-1 I 1C I-- a,c WCAP- 17548-NP August 2013 Revision 2 3-2 II] axc-Table 3-2 1 Ba,c a,c I]a,c Table 3-3 1 i8,C a,c I Table 3-4 1 I RX flc a,c WCAP-17548-NP August 2013 Revision 2 3-3 ia,b,c a,b,c 3.2 DATA PROCESSING OVERVIEW I WCAP-1 7548-NP August 2013 WCAP- 17548-NP August 2013 Revision 2 3-4 3.3 STRAIN TO PRESSURE CONVERSION
-MSL STRAIN GAUGE DATA]ax L a,c j (3-1)where,[[I]alc]ac]a,c a,c Figure 3-1 Pipe Mode Diagram, N=[0,41 II]a,c WCAP-17548-NP August 2013 Revision 2 3-5 I]aoc L]a,c (3-2)where,[[[]a,c]a,c]a,c I]a,c 3.4 NARROW-BAND FILTERING I]ac I]ac WCAP- 17548-NP August 2013 Revision 2 3-6 3.5 PSD DERIVATION The PSDs used in the methods presented in this report were derived using Welch's modified periodogram method. The signal was divided up into time ensembles with the same number of lines as the sampling frequency, resulting in a 1 Hz frequency resolution in the final PSD. A Harming window was used to reduce spectral leakage, and 50 percent overlap was used to increase the number of ensembles available for averaging.
3.6 WAVELET
DENOISING II]a,c I]a,C I]ac I 1.2.3.[I IC IC I IC WCAP-17548-NP August 2013 Revision 2 3-7 I I c I]C I C (3-3)where,[[Ic I]a.c I] C 3.7 COMPUTATION OF THE PREDICTED EPU SIGNAL I]ac I]a3c WCAP- I 7548-NP August 2013 WCAP- 17548-NP August 2013 Revision 2 4-1 4 INPUTS TO SIGNAL PROCESSING AND ASSUMPTIONS 4.1 INPUTS]a,c]a,c 4.2 ASSUMPTIONS The acoustic speed in steam is assumed to be 1,600 ft/s per Reference 12.[] C] ax I pac[]a,c la,c WCAP-1 7548-NP August 2013 WCAP-17548-NP August 2013 Revision 2 5-1 5 5.1 DISCUSSION OF RESULTS DATA RECORDING I]a,c STable 5-1 Transducers and Units Transducer Units L a,c I]a,c I]abxc WCAP-17548-NP August 2013 Revision 2 5-2 Table 5-2 Dates and Times of Data Recording Recording
%CLTP Date Time Filename b II]a,c I. [WCAP-17548-NP August 2013 Revision 2 5-3]ac 2.]a~c 3.]a,c]a,c a,c a,c Figure 5-1 Examples of Transients in Data ia,b,c WCAP-17548-NP August 2013 Revision 2 5-4 II]a,b,c I]abc 5.2 STRAIN TO PRESSURE CONVERSION II]a,c I]ac b WCAP- 17548-NP August 2013 Revision 2 5-5 Table 5-4 shows a summary of the removed channels for each of the MSL strain gauge files.I Table 5-4 1 ]8,C I Recording
% CLTP Date Stamp Time Selection Removed Channels 1 b I]a,c WCAP- 17548-NP August 2013 Revision 2 5-6 I]a,b,c a,b,c I Figure 5-2 Figure 5-3 [b,c]a,b,c a,b,c b,c WCAP-17548-NP August 2013 Revision 2 5-7 I]a.bc I a,b,c I ja,b,c a,b,c Figure 5-4 [b,c II]ab.c I a,b,c WCAP-17548-NP ARigust 2013 Revision 2 5-8 a,b,c a,b,c Figure 5-5 [Figure 5-6 1 b,c b,c I a.,b.c WCAP- I 7548-NP August 2013 WCAP- 17548-NP August 2013 Revision 2 5-9 a,b,c Figure 5-7 jb,c I a,b,c WCAP- I 7548-NP August 2013 WCAP-17548-NP August 2013 Revision 2 5-10 5.3 FILTERING I]a,c Table 5-5 Summary of Narrow-Band Filters a,b,c WCAP-17548-NP August 2013 Revision 2 5-11 Table 5-5 Summary of Narrow-Band Filters (cont.)a,b,c I]ab.c WCAP-1 7548-NP August 2013 Revision 2 5-12 b Figure 5-8 b,c I a,b,c WCAP- 1 7548-NP August 2013 Revision 2 5-13 5.4 WAVELET DENOISING[]ac I]ac II]C a,b,c Figure 5-9 [I b,c WCAP- 17548-NP August 2013 Revision 2 5-14 IIC a,b,c Figure 5-10 b,c WCAP-17548-NP August 2013 Revision 2 5-15 a,b,c Figure 5-11 1 5.5 PREDICTED EPU SIGNAL I i b.c pac WCAP- 17548-NP August 2013 Revision 2 5-16 b Figure 5-12 CLTP and Predicted EPU Signals, MSL A US b Figure 5-13 CLTP and Predicted EPU Signals, MSL A DS WCAP- 17548-NP August 2013 Revision 2 5-17 b Figure 5-14 CLTP and Predicted EPU Signals, MSL B US b Figure 5-15 CLTP and Predicted EPU Signals, MSL B DS WCAP-17548-NP August 2013 Revision 2 5-18 b Figure 5-16 CLTP and Predicted EPU Signals, MSL C US b Figure 5-17 CLTP and Predicted EPU Signals, MSL C DS WCAP- I 7548-NP August 2013 WCAP- 17548-NP August 2013 Revision 2 5-19 b Figure 5-18 CLTP and Predicted EPU Signals, MSL D US b Figure 5-19 CLTP and Predicted EPU Signals, MSL D DS WCAP- 1 7548-NP August 2013 WCAP-17548-NP AugRist 2013 Revision 2 6-1 6 CONCLUSIONS
]a~b,c The processing steps that define this methodology and that are fully detailed in Reference 8 and summarized in this document can be listed as follows: 1. [2.3. [4. []a,c]a,c]a,c The resulting datasets are the best available representation of the actual plant data with minimal signature influence from background and noise contributions.
]a,c WCAP-17548-NP August 2013 Revision 2 7-1 7 REFERENCES
- 1. United States Nuclear Regulatory Commission Regulatory Guide 1.20, Rev. 3, "Comprehensive Vibration Assessment Program for Reactor Internals During Preoperational and Initial Startup Testing," March 2007.2. []a,c 3. [4.5.6.a,c]a,c]a,c]a,c 7. []a,c 8. []a.c 9. [pc 10. Jacob Benesty, M. Mohan Sondhi, and Yiteng Huang (Eds.), Springer Handbook of Speech Processing, Springer, Berlin, 2008.11. 0. Cappe, "Elimination of the Musical Noise Phenomenon with the Ephraim and Malah Noise Suppressor," IEEE Transactions of Speech and Audio Processing (April 1994): Vol. 2, 345-349.12. ASME, "ASME Steam Tables," Fifth Edition, 1983.13. []a,c WCAP-17548-NP August 2013 Revision 2 7-2 14. Structural Integrity Associates Calculation Package, MONT- I1Q-303, Rev. 1, "Monticello Main Steam Strain Gage Data Reduction," January 21, 2009.15. Xcel Energy Design Information Transmittal, DIT 13638-10, "Extended Power Uprate Implementation," June 24, 2011.WCAP-17548-NP August 2013 Revision 2}}