ML13248A345

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WCAP-17251-NP, Revision 2 - Monticello Replacement Steam Dryer Four-Line Acoustic Subscale Testing Report, Enclosure 11
ML13248A345
Person / Time
Site: Monticello Xcel Energy icon.png
Issue date: 08/29/2013
From: Berman I E
Westinghouse
To:
Office of Nuclear Reactor Regulation
References
L-MT-13-091, TAC MD9990 WCAP-17251-NP, Rev 2
Download: ML13248A345 (67)


Text

L-MT-13-091 ENCLOSURE 11 WESTINGHOUSE WCAP-17251-NP, (NONPROPRIETARY)

REVISION 2 MONTICELLO REPLACEMENT STEAM DRYER FOUR-LINE ACOUSTIC SUBSCALE TESTING REPORT 66 pages follow Westinghouse Non-Proprietary Class 3 WCAP-17251-NP Auc Revision 2 Monticello Replacement Steam Dryer Four-Line Acoustic Subscale Testing Report Westinghouse just 2013 WESTINGHOUSE NON-PROPRIETARY CLASS 3 WCAP-17251-NP Revision 2 Monticello Replacement Steam Dryer Four-Line Acoustic Subscale Testing Report Inessa E. Berman*U.S. BWR Engineering August 2013 Reviewer:

AnnMarie Rowland*U.S. BWR Engineering Approved:

Daniel T. McLaughlin*, Resource 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© 2013 Westinghouse Electric Company LLC All Rights Reserved ii RECORD OF REVISIONS Revision Description Completed 0 Original issue 06/15/10 The goal of the Rev. 0 report was to analyze the effect of the new dryer geometry on 03/03/13 the acoustic signature and to develop the scaling spectra based on the plant data taken at CLTP with the OEM dryer.The goal of the Rev. I report was to derive the scaling spectra to predict EPU acoustic signature based on the CLTP plant data with the RSD dryer. The updated document eliminates sections that compared the two different dryer geometries and provides an in-depth review of the RSD subscale data analysis.2 The scaling spectra in Rev I version were calculated based on dynamic pressure See EDMS scaling which is a function of the velocity squared. The scaling spectra calculated based on the subscale testing are included in Rev 2 version.All of the figures were updated to reflect the 15 percent increase based on the mass flow rate increase, instead of power increase.The change bars were not included.WCAP-1725 1-NP August 2013 WCAP- 17251-NP August 2013 Revision 2 iii TABLE OF CONTENTS R E C O R D O F RE V ISIO N S ..........................................................................................................................

ii L IS T O F T A B L E S .......................................................................................................................................

iv L IST O F F IG U R E S ......................................................................................................................................

v EX EC U TIV E SU M M A RY .........................................................................................................................

vii ACRONYMS, ABBREVIATIONS, AND TRADEMARKS

.....................................................................

viii T RA D E M A R K S ........................................................................................................................................

viii 1 BACKGROUND AND PURPOSE .........................................................................................

1-1 2 IN PU T S TO T E ST IN G .................................................................................................................

2-1 2.1 PLANT OPERATING CONDITIONS

............................................................................

2-1 2.2 PRE-TEST PREDICTIONS AND ASSUMPTIONS

......................................................

2-1 3 TESTING METHODOLOGY

......................................................................................................

3-1 3.1 SUBSCALE TEST SYSTEM ..........................................................................................

3-1 3.2 PROCEDURAL OVERVIEW .........................................................................................

3-3 3.3 INSTRUMENTATION AND DATA ACQUISITION

.....................................................

3-4 3.4 PRODUCTION TESTING ..............................................................................................

3-4 4 DATA PROCESSING METHODOLOGY

...............................................................................

4-1 4.1 DATA FILTERING AND SELECTION

......................................................................

4-1 4.2 COMPUTATION OF THE MACH NUMBER ...............................................................

4-1 4.3 FREQUENCY SCALING ...............................................................................................

4-2 4.4 COMPUTATION OF THE SIDE BRANCH NATURAL FREQUENCY

.......................

4-2 4.5 COMPUTATION OF THE POWER SPECTRAL DENSITIES

.....................................

4-3 4.6 COMPUTATION OF THE RMS PRESSURES

..............................................................

4-3 4.7 COMPUTATION OF THE SCALING SPECTRA ..........................................................

4-4 5 DESCRIPTION OF RESULTS ....................................................................................................

5-1 5.1 R A W D A TA .....................................................................................................................

5-1 5 .2 T E S T L O G .......................................................................................................................

5-3 5.3 MACH NUMBER COMPARISONS

..............................................................................

5-5 5.4 NATURAL FREQUENCY CALCULATIONS

...............................................................

5-6 5.5 ASSESSMENT OF THE MSL ACOUSTIC SIGNATURES

..........................................

5-6 5.6 RMS PRESSURE TRENDS ..........................................................................................

5-10 5.7 EFFECT OF THE DRYER GEOMETRY .....................................................................

5-11 6 CLTP TO EPU SCALING SPECTRA ..........................................................................................

6-1 7 C O N C L U S IO N S ..........................................................................................................................

7-1 8 RE FE R EN C E S .............................................................................................................................

8-1 APPENDIX A REPEATABILITY OF TEST DATA FOR OEM DRYER ........................................

A-1 APPENDIX B REPEATABILITY OF TEST DATA FOR REPLACEMENT DRYER ......................

B-1 WCAP- 17251 -NP August 2013 Revision 2 iv LIST OF TABLES Table 2-1 Table 2-2 Table 3-1 Table 4-1 Table 5-1 Table 5-2 Table 5-3 I I I I]a,b ..............................................................................

2-1 ab .......................................................

2-1..................................................................................

3-4]a.b .......................................................

4-3 a.. b ..............................................................

5-3 a,,b.. ................

..................

5-4]b. b ................

...........

5-6 WCAP-17251-NP August 2013 Revision 2 V LIST OF FIGURES Figure 3-1 []a ...............................................

3-1 Figure 3-2 ]a ..........................................................................................

3-2 Figure 3-3 M ockup of the M onticello OEM Dryer .........................................................................

3-2 Figure 3-4 M ockup of the M onticello Replacement Steam Dryer ..................................................

3-3 Figure 5-1 [ ]a,b ..............................

5-1 Figure 5-2]a.b ..............................................................................................

5 -2 Figure 5-3 [b ....................................................................

5-5 Figure 5-4 []a ...................................................

5-7 Figure 5-5 [] ...................................................

5-7 Figure 5-6 [] ....................................................

5-8 Figure 5-7 [] ....................................................

5-8 Figure 5-8 [.]a ......................................................................

5-9 Figure 5-9 [b ..............................................................

5-10 Figure 5-10 ]a ...............................................

[ 5-11 Figure 5-11 ] ...............................................

[ 5-12 Figure 5-12 []a ...............................................

5-13 Figure 5-13 []a ...............................................

5-14 Figure 6-1 [.]a ......................................................................

6-1 Figure 6-2 [.]a ......................................................................

6-2 Figure 6-3 [.]a ......................................................................

6-2 Figure 6-4 [.]a ......................................................................

6-3 Figure A-1 [ b ...........................................................................................

A-1 Figure A-2 [b ...........................................................................................

A-2 Figure A-3 [a,b ...........................................................................................

A-3 Figure A-4 [b ...........................................................................................

A-4 Figure A-5 [ ]b ..........................................................................................

A-5 Figure A-6 [ ]a,b ...........................................................................................

A-6 Figure A-7 [ ]a.b ...........................................................................................

A-7 Figure A-8 ],b ...........................................................................................

A-8 WCAP-17251 -NP August 2013 Revision 2 vi Figure A-9 Figure B-I Figure B-2 Figure B-3 Figure B-4 Figure B-5 Figure B-6 Figure B-7 Figure B-8 Figure B-9 Figure B-10 Figure B- 1I Figure B-12 Figure B- 13 Figure B-14 Figure B- 15 Figure B- 16 Figure B- 17 Figure B-18 a,b ...........................................................................................

A -9]a,b .........................................................................................

B -1.a,b ...........................................................................................

B -2]a b ..........................................................................................

B -3]a,b ...........................................................................................

B -4]a,b .........................................................................................

B -5]iab ..........................................................................................

B -6.b ...........................................................................................

B -7]a,b ...........................................................................................

B -8]a,b ...........................................................................................

B -9]a~b ........................................................................................

B -10]a,b .........................................................................................

B -11]ab .........................................................................................

B -I2]ab .........................................................................................

B -13]a,b .........................................................................................

B -14]a,b .........................................................................................

B -15 b .........................................................................................

B -16] b .........................................................................................

B -17]a,b .........................................................................................

B -18 WCAP-17251-NP August 2013 Revision 2 vii EXECUTIVE

SUMMARY

]a The main purpose of the test program was to]ab The second purpose of this testing program was The third purpose of this testing program was]a ab]a,b WCAP-1 7251 -NP August 2013 WCAP-17251-NP August 2013 Revision 2 viii ACRONYMS, ABBREVIATIONS, AND TRADEMARKS Acronyms and Abbreviations A/D analog/digital CLTP current licensed thermal power DAS data acquisition system DS downstream (used only in figures and tables)EPU extended power uprate MSL main steam line NRC Nuclear Regulatory Commission OEM original equipment manufacturer PSD power spectral density PVC polyvinyl chloride RMS root mean square RPV reactor pressure vessel RSD replacement steam dryer SRV safety relief valve US upstream (used only in figures and tables)CDI Continuum Dynamics, Inc TRADEMARKS DaqBook/2020, DASYLab, eMachines, MATLAB, Microsoft, and Windows are trademarks or registered trademarks of their respective owners. Other names may be trademarks of their respective owners.WCAP- 17251-NP August 2013 Revision 2 1-1 1 BACKGROUND AND PURPOSE Monticello contracted Westinghouse in support of licensing for EPU. []a.C In order to uprate the plant power, the United States Nuclear Regulatory Commission (NRC) requires that the structural integrity of the steam dryer be evaluated with regard to possible acoustic pressure loads.[This requirement is detailed in Reference

1. In order to evaluate the structural integrity of the steam dryer,]a In summer 2009, a four-line subscale model test was performed through a range of Mach numbers encompassing all planned operating conditions.

The main purpose of the four-line subscale model testing]a The subscale test data were evaluated to establish whether or not the plant is operating in an acoustically benign region through the range of planned operating conditions.

]b,d]bed The results presented in this report are based on testing performed in accordance with the test plan WCAP- 17251 -NP August 2013 Revision 2 2-1 2 INPUTS TO TESTING 2.1 PLANT OPERATING CONDITIONS

]ab Table 2-1 [],b r--K I a,b 2.2 PRE-TEST PREDICTIONS AND ASSUMPTIONS

]ab K a,b I ab WCAP-17251 -NP August 2013 Revision 2 3-I 3 3.1 TESTING METHODOLOGY SUBSCALE TEST SYSTEM I]a]a The geometry of the subscale system is explicitly described in Reference 2.[Figure 3-1 1 ,a WCAP- 17251-NP August 2013 Revision 2 3-2 a Figure 3-2 [ Ia Figure 3-3 Mockup of the Monticello OEM Dryer a WCAP- 1725 I-NP August 2013 Revision 2 3-3 ma Figure 3-4 Mockup of the Monticello Replacement Steam Dryer 3.2 PROCEDURAL OVERVIEW The testing procedure is documented in Reference 2.[]I]a[] a WCAP-17251-NP August 2013 Revision 2 3-4]a 3.3 INSTRUMENTATION AND DATA ACQUISITION The instrumentation used in the test is summarized in Table 3-1.Table 3-1 ]an K a.,b I Ia 3.4 PRODUCTION TESTING[]WCAP-17251-NP August 2013 Revision 2 4-1 4 4.1 DATA PROCESSING METHODOLOGY DATA FILTERING AND SELECTION I]a a 4.2 COMPUTATION OF THE MACH NUMBER II]a The computation of the Mach number was performed with Equation (4-1).[a where, (4-1)a The acoustic speed in air is a function of temperature.

The computation of the acoustic speed is shown in Equation (4-2).WCAP-17251 -NP August 2013 Revision 2 4-2 ca,, = ýy-

  • R* T (4-2)where, Cair 7 R T is the acoustic speed in air.is the ratio of specific heats (1.4 for air).is the universal gas constant (1718 2 for air).s
  • Rankine is the absolute temperature in Rankine.4.3 FREQUENCY SCALING[I] a (4-3)a,b where, I a.b 4.4 The [COMPUTATION OF THE SIDE BRANCH NATURAL FREQUENCY]a"C natural frequency was derived []a,c I I a,c WCAP- 17251 -NP August 2013 Revision 2 4-3 a,b I a,c 4.5 COMPUTATION OF THE POWER SPECTRAL DENSITIES The PSDs were derived using Welch's modified periodogram method. Averaging was used, and the number of points for each ensemble was selected to yield a frequency resolution of 1 Hz (fall scale).A Hanning window was used to reduce spectral leakage, and 50 percent overlap was used to increase the number of averages.4.6 COMPUTATION OF THE RMS PRESSURES The computation of the RMS pressures is shown in Equation (4-4).L I a (4-4)where, L a I II]a WCAP-1725 1-NP August 2013 WCAP-17251-NP August 2013 Revision 2 4-4 4.7 COMPUTATION OF THE SCALING SPECTRA[]a This is shown in Equation (4-5).L a (4-5)where,[]WCAP-17251 -NP August 2013 Revision 2 4-5 a (4-6)where, a WCAP-17251-NP August 2013 Revision 2 5-1 5 5.1[DESCRIPTION OF RESULTS RAW DATA Figure 5-1]3a~b a,b rab WCAP-17251-NP August 2013 Revision 2 5-2 II]ab a,b Figure 5-2 1a,b WCAP-17251 -NP August 2013 Revision 2 5-3 5.2 TEST LOG I ]ab 11 Table 5-1 I lab I a,b WCAP- 17251-NP August 2013 Revision 2 5-4[a.b 11 Table 5-2 I WCAP-17251-NP August 2013 Revision 2 5-5 5.3 MACH NUMBER COMPARISONS I la b Figure 5-3 1 WCAP-17251-NP August 2013 Revision 2

5.4 NATURAL

FREQUENCY CALCULATIONS 5-6]a.b 11 Table 5-3 I ab a,b 5.5 ASSESSMENT OF THE MSL ACOUSTIC SIGNATURES I] a I]a~b I]a la I] a WCAP-17251 -NP August 2013 Revision 2 5-7[b Figure 5-4 Figure 5-5 [I b]a WCAP-17251-NP August 2013 Revision 2 5-8 b Figure 5-6 [la b Figure 5-7 [a WCAP- 17251-NP August 2013 Revision 2 5-9]a,b b Figure 5-8 WCAP-17251-NP August 2013 Revision 2 5-10 5.6 RMS PRESSURE TRENDS I]a~b a,b Figure 5-9 [rab WCAP- 17251 -NP August 2013 Revision 2 5-11 Ib 5.7 EFFECT OF THE DRYER GEOMETRY I]a~b-I a,b Figure 5-10 1]a WCAP- 17251 -NP August 2013 WCAP- 17251-NP August 2013 Revision 2 5-12 a,b Figure 5-11 [Jla WCAP- 1725 1-NP August 2013 Revision 2 5-13 a,b Figure 5-12 [Ia WCAP-17251 -NP August 2013 Revision 2 5-14 atb Figure 5-13 1]a WCAP-17251-NP August 2013 Revision 2 6-1 6 CLTP TO EPU SCALING SPECTRA I]a.c I la,c a,c Figure 6-1 [a WCAP- 17251 -NP August 2013 Revision 2 6-2 a,c Figure 6-2 [Figure 6-3 [I a a,c Ia WCAP-17251-NP August 2013 Revision 2 6-3 a,c Figure 6-4 [a WCAP- 17251 -NP August 2013 Revision 2 7-1 7 CONCLUSIONS

]ab ia,b WCAP-17251-NP August 2013 Revision 2 8-1 8 REFERENCES

1. Regulatory Guide 1.20, Rev. 3, "Comprehensive Vibration Assessment Program for Reactor Internals During Preoperational and Initial Startup Testing," U.S. Nuclear Regulatory Commission, March 2007.2.]a,c 3. ASME, "ASME Steam Tables," Fifth Edition, 1983.WCAP-1725 1-NP August 2013 Revision 2 A-1 APPENDIX A REPEATABILITY OF TEST DATA FOR OEM DRYER a,b Figure A-1 []a,b WCAP- 17251 -NP August 2013 Revision 2 A-2 a,b Figure A-2 [ ]a,b WCAP-1725 1-NP August 2013 Revision 2 A-3 a,b Figure A-3 [ ]a,b WCAP- 17251 -NP August 2013 Revision 2 A-4 a,b Figure A-4 [ ]a,b WCAP-17251-NP August 2013 Revision 2 A-5 a,b Figure A-5 I la.b WCAP-1725 1-NP August 2013 Revision 2 A-6 a,b Figure A-6 [la,b WCAP- 1725 1-NP August 2013 Revision 2 A-7 a,b Figure A-7 [ ]a,b WCAP-1725 1-NP August 2013 Revision 2 A-8 a,b Figure A-8 [ ]ab WCAP-17251-NP August 2013 Revision 2 A-9 a,b Figure A-9 [ ]a,b WCAP-17251 -NP August 2013 Revision 2 B-1 APPENDIX B REPEATABILITY OF TEST DATA FOR REPLACEMENT DRYER a,b Figure B-1 [ja.b WCAP- 17251-NP August 2013 Revision 2 B-2 a,b Figure B-2 [la,b WCAP- 17251-NP August 2013 Revision 2 B-3 a,b Figure B-3 [WCAP-1725 I-NP August 2013 Revision 2 B-4 a,b Figure B-4 [rab WCAP-17251 -NP August 2013 Revision 2 B-5 a,b Figure B-5 [ ja,b WCAP-1725 I-NP August 2013 Revision 2 B-6 a,b Figure B-6 I lab WCAP-17251 -NP August 2013 Revision 2 B-7 a.b Figure B-7 [ ]a,b August 2013 Revision 2 WCAP-17251-NP B-8 a,b Figure B-8 [ ]a,b WCAP-17251-NP August 2013 Revision 2 B-9 a,b Figure B-9 [l a.b WCAP- 17251 -NP August 2013 Revision 2 B- 10 a,b Figure B-1O [Iab WCAP-17251 -NP August 2013 Revision 2 B-11 a,b Figure B-11 [rab WCAP-17251 -NP August 2013 Revision 2 B-12 a,b Figure B-12 [a,b WCAP-17251 -NP August 2013 Revision 2 B- 13 a,b Figure B-13 [a,b WCAP- 17251-NP August 2013 Revision 2 B- 14 a,b Figure B-14 [a,b WCAP-17251 -NP August 2013 Revision 2 B- 15 a,b Figure B-15 [I a,b WCAP- 17251-NP August 2013 Revision 2 B-16 a,b Figure B-16 [lab WCAP-17251-NP August 2013 Revision 2 B-17 a,b Figure B-17 [ ]a,b WCAP-17251-NP August 2013 Revision 2 B- 18 a,b Figure B-18 [a,b WCAP-1725 1-NP August 2013 Revision 2