ML20004D272
| ML20004D272 | |
| Person / Time | |
|---|---|
| Site: | LaSalle  |
| Issue date: | 06/01/1981 |
| From: | SARGENT & LUNDY, INC. |
| To: | |
| Shared Package | |
| ML20004D267 | List: |
| References | |
| NUDOCS 8106090095 | |
| Download: ML20004D272 (400) | |
Text
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O O LA SALLE COUNTY NUCLEAR STATION - UNIT 182 4 COMMONWEAD H EDISON COMPANY 1
IMP $ DANCE TEST REPORT SAFETY-RELATED EQUIPMENT QUALIFICATION i
POST NRC AUDIT DOCUMENTATION - VOL. 7 i BY
! ENGINEERING MECHANICS DIVISION SARGENT & LUNDY ENGINEERS 6-1-81 ,
J l
EMD FILE #030469 ,
O THIS DOCUMENT CONTAINS 8106090Okk POOR QUAUTY PAGES
. . - . . _ - - . . . _ - . . - . - . . . _ . - - . - = . . - . . . - . - . - - . - . . - . . . - . . .. . - . - . - . - .
Li SARGENT & LUNDY ENGINEERS CHICAGO (a~)
StM %RY This summary report contains comparison between results of final qualification reports (either analysis or test) and in-plant mechanical impedence measurements on seventeen representative f .
LaSalle County-1 Nuclear Power Plant equipment. The objectives of this evaluation are:
To assess the similarity and differences between the impedence test results and the existing qualification reports; and To re-assess the cdequacy of the equipment for the additional f)h
(. hydrodynamic loadings, particularly in regard to the high frequency resonances reported as a result of impedence testing.
Based on the findings, as detailed in sections 1 thru 17 of this report, it can be concluded that, in general, a good agreement exists between the existing qualification reports and the results of the '
in-plant impedence tests. Moreover, there is adequate margin of safe'ty to account for higher frequency resonances found in the impedence test measurements.
LASALLE COUNTY NUCLEAR STATION UNIT - 1 & 2
_. IMPEDANCE TEST REPORT ,
Table of Contents Section Description Pages 1 LPCS Pump and Motor Al to A16 lE21-C001 2 2" Motor Operated Gate Valve Bl to B19 lE51-F019 3 Standby Liquid Level Pump Cl to C18 1C41-C001 4 SBGTS Equipment Train D1 to D18 lVG0lS 5 . SFM/IRM Preamp Panel (Wall tbunted) El to E43 1H22-P030 6 Damper Hammer Test IVR05YB F1 to F29 7 Main Control. Panel (Bench' Board) G1 to G27 lH13-P601 8 Main Steam Isolation Valve H1 to H29 1B21-F022C 9 MSIV. Blower ~
J1 to J23 lE32-C001 10' SBGTS Control Panel K1 to K24 ,
1PLl7J 11 250 Volt D.C. Control Panel Ll to L27 1DC06E 12 Main Control Panel (Vertical Board) :*1 to M20 lH13-P609 13 SBGTS Primary Fan N1 to N13 lVG01C' 14 14" Valve P1 to P28 -
~
lE22-F001 P 15 Reactor Recirculating Flow Q1 to Q26 Control Valve 16 4" Motor Operated Gate Va,1ve R1, lE22-F012 ,
17 12" Motor Operated Globe Valve S1 mm --
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. t Caks. For LPCS Pump - Comparison of Calc. No. Lgh- 630 fff f CARGENT?sLUNDY Ir:pedance Test and Analyta. cal' Resulto Rev. 0 0 Date 06/01/81 C " 'C ^"
X Safety-Re!ated Non-Safety-Related Page Al of A16
[ Client Commonwealth Edison Com_pany Prepared by Ismail Kisisel Date Project LaSalle County, Units I & II Reviewed by
- Date Proj.No.4266/4267/6093-00 Equip.No. E21-C001 Approved by Date I. OBJECTIVE The objectives of this study can be summarized a,s follows:
l a) To assess the comparison between the impedance test results and the existing qualification report, b) To re-assess the adequacy of the equipment for the additional hy'drodynamic loadings, particularly in regard to the high frequency resonances reported as a result of impedance tests conducted in-situ.
II.
SUMMARY
OF PERTINENT RESULTS FROM QUALIFICATION REPORT O Qualification report presented the results of analytical assessment and design qualification for this LPCS pump. (Ref. 1)
In order to assure the functional reliability and operability as well as the structural integrity, the following analytical efforts and considerations were undertaken:
a) A detailed dynamic / static analysis was performed on a three dimensional finite element model, which represented the mass, stiffness and boundary conditions of the pump-motor assembly. ,
b) The seismic and hydrodynamic load combinations (T-Quencher) as stipulated in the design environment were met. .
c) Compliance was assured with the design requirements of the ASME B&PV.,Section III Code (NB-3200) per service levels B & C and with other conservative methods of mechanics and stress analysis.
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Safety-Related
]l 3,,, o o o,,,osfo1fg1 Non-Safety-Related Page A2 of A16 Client Commonwealth Edison Company Prepared by Date Project LaSalle County, Units I & II Reviewed by Date Proi. No.4266/4267/6093-00 Equip. No. Approved by Date d) Operability was verified by checking relative displacements at critical locations.
Based on the results of analysis as presented in Ref. 1, this LPCS Pump was qualified as a reliable and functional pump for the RI!R system in the ECCS.
The schematic representation of the finite element model is given in Figure 1. Essentially, the model is a three dimensional lumped mass beam element model, capable of accepting loads from the vertical and two horizontal directions simultaneously. Model has i total number of 105 nodes, 97 beam elements and 16 boundary elements.
S&L SAPIV computer program was used for both dynamic and static analysis of the model.
A modal analysis was performed using the subspace iteration technique and all e-igenvectors were saved on a permanent file for subsequent analysis with various dynamic loading conditions. Twenty-five modes were considered in the analysis, with the highest frequency'of 140.5 cps. This frequency is high enough to cover the ZPA of all applicable response spectra. Table 1 on page .gives the frequenc'ies of the structure. As can be seen from this table, the fundamental frequency of the equipment is 7.82 cps.
III.
SUMMARY
OF PERTINENT RESULTS PROM IMPEDANCE TEST REPORT SQRT in-plant impedance testing on the LPCS pump was done on July 24,
. 1980. At that time, all hydraulic and electrical conne'ctions to the s
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Rev. 0 0 Date 06/01/81
"" ^" Safety-Retated f.'on-Safety-Related Page A4 of Al6 Client Commonwealth Edison Company Prepared by Date I Project LaSalle County, Units I & II Reviewed by Date Prej. No.4266/4267/6093-00 Equip. No. Approved bY Date TABLE 1 - EIGENFREQUENCIES PRINT OF FRCOUENCIES .
MODE CIRCULAR NUMSER FREQULNOY rREr;UENCY PERIOD Tot.ER ANC E (RAD /SEC) (CYOLES/SEC) (SEC) 1 .4912+02 .7918+01 1279+00 .6705-08
- 2 -
.5352+02 .8518+01 .1174+00 .2559-00 3 7308+02 1163+02 .8598-01 .3421-07 4 .7600+02 .1211+02 .3260-01 .2253-07 5 .2167+03 .3450-02 .2899-01 .1594-07 6 .2173+03 .3458+02 .2892-01 .1240-07 7 2335+03 .3717+02 .2691-01 .1848-07
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8' .2590+03 . 4122+02 .2420-01 .2935-07 9 .3729+03 .5935,402 .1G85-01 4124-07 10 4034+03 .G421402 .1558-01 .8730-08 11 4605+03 .733O+02 .1364-01 .8963 08 12 4825+03 .7679+02 .1302-01 .2232-07 l 13 .4923+03 .7835+02 1276-01 .1750-07 14 .5284+03 .8409+02 .1189-01 .1954-07 15 .5918+03 .9259+02 1080-01 .3938-07 1G .5910+03 .940G+02 .1063-01 .3304-07 17 .5957+03 .9481+02 1055-01 .1984-08 18 .5962+03 .9489*02 .1054-01 .2878-07 19 .6201+03 .98G9+02 .1013-01 .1167-08 20 .G219+03 9898+02 .1010-01 .3537-03 21 .G2GG+03 .9973+02 .1003-01 .250G-07 l
22 .6269+03 .9978402 1002-01 .1471-07 23 .643O+03 .1023*03 .9772-02 '.3082-07 24 .G845+03 .1089+03 .9179-02 4870-05 25 .e828+03 1405+03 .7117-02 .1305-07 l
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Rev. 0 0 Date 06/01/81 C " 'C ^
Safety-Re'.ated Non-Safety-Related Page A5 of A16 O
g Chent Commonwealth Edison Company Prepared by Date Project LaSalle County, Units I,_& II Reviewed by Date Pref. No.4266/4267/6093-00 Equip. N o. Approved by Date pump and motor were completed. The wire frame model of the test A5 geometry is shown in Figure 2.
The TRANSITEK hydraulic shaker with the small weight (122 lb. mass) was attached to the top of the motor in the horizontal direct 1ons at points 27 and 31. The acceleration amplitudes at that point were limited to the range of 0.1 to 0.39 at the request of the contractor responsible for the pump installation. Further details pertaining geometry, method of testing and evaluation are given in References 2 and 3.
The modal parameters as identified by the tester (Ref. 2, Table O 4 . 2.1) are given in Table 2, page A7.
i IV. COMPARISON OF RESULTS f An inspection of the wire frame model of the impedance test geometry as given in Figure 2 indicates that the measurements were essentially conducted on the portion of the pump / motor assembly that is visible above the foundation plate; namely the motor stand, outside elements of the motor and the discharge elbow. Therefore, before attempting any comparison of the results, the frequencies that are pertinent to these parts are to be identified from the analysis results. This task is carried on, and by carefull inspection of the node displacements and rotations at the nodes of O rieite e1emeet ae1, acecribieu the eu ve meetioeea e reioee or the equipment assembly, the important frequencies are identified and tabula'ted in Table 3, page A8.
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_. > umaemessee .
C " 'C ^* Non-Safety-Related Page A7 Safety-Related of A16 O c" > commoemee1ta Edison comnemv e,e a e bv o.te Project LaSalle County, Units I & II Reviewed by Date Proi. No.4266/4267/6093-00 Equip. No. Approved by Date i
TABLE 2 MODAL PARAMETERS OF THE LPCS PUMP (IMPEDANCE TEST)
Mode Frequency Damping Ref. Res.
1 11.722 0.047359 27Z+ 27Z+-
~2 53.341 0.041495 27Z+ 27Z+
3 63.485 0.041254 27Z+ 27Z+
4 10.355 0.012157 31X+ 31X+
5 83.151 0.043828 31X+ 31X+
6 12.150 U.016476 31X+ 31X+
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The Z-direction input force spectrum and l
four representative transfer functions in various directions are presented on pages A10 - A14.
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Cates. For Calc. No.f 41/)-g3MF4'f SARGEIJT4I. UNDY n, 00 o,,e 06/01/81
> ENGINEERS -
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Safety-Reisted hon-Safety-Related Page A8 of A16 Client Commonwealth Edison Company Prepared by Date Project LaSalle County, Units I & II Reviewed by Date Prci. No.4266/4267/6093-00 Equip. No. Approved by Date TABLE 3 ANALYTICAL FREQUENCIES FOR Tile PORTIONS OF TIIE EQUIPMENT CORRESPONDING TO Tile TESTED REGION -
MODE FREQUENCY 1 7.82 2 8.52 3 11.63 4 12.11 9 59.35 10 64.21 11 73.30 12 76.79 13 78.35 14 84.09 15 92.59 0
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Safety-Related Non-Safety-Related Page A9 of A16 Client Commonwealth Edison Company Prepared by Date Project LaSalle County, Units I & II Reviewed by Date Proj. No.4266/4267/6093-00 Equip. No. Approved by Date By comparing Tables 2 and 3 following can be said:
a) frequency range covered by analysis is inclusive of the frequency range presented as test results.
b) and of six experimental frequencies presented, four resonant frequencies can be matched very closely with frequencies given in Table 3, namely, 11.722 and 11.63, 12.150 and 12.11, 63.485 and 64.21, 83.151 and 84.09.
c) by investigating transfer functions given in pages All - A14, it can be concluded that there are a number of resonant frequencies O between 52. end 65. ces. , which is en inc1esive rense for modes 9 and 10 reported.in Table 3, d) by investigating the input force spectrum given on page A10, it is concluded that frequencies below 10 cps. were not adequately excited during the experiements, resulting a difficulty in positive identification of resonant frequencies below 10 cps.
Yet, investigation of transfer functions in Z direction that are presented on pages A12 and A13 indicate that there is an identifi-able frequency in the vicinity of 8.5 cps, however, not well defined due to insufficient excitation.
e) In general there is' good agreement between analytical and test results. Small differences may be attributed to the conservative O eeeroech thet is to11owea ia the ri=1te e1eme#t mode 111as.
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' Calc. No. fAM-O36 Y6 9 SARGENThLUNDY n, oo o,,e 06/01/81 semaiwomme-c m .c ao Safety-Related Non-Safety-Related Page A15 of A16
(] Client Commonwealth Edison Company Project LaSall.e_ County, Units I & II Prepared by Reviewed by Date Date Proj. No.4266/4267/6093-00 Equip. No. Approved by Date V. CONSIDERATION OF HIGII FREQUENCY RESONANCES In the case of this equipment, there is no special evaluation required 'for the high frequency resonances at this stage, simply because the analysis considered both the seismic and hydrodynamic (T-quencher) response spectra load combinations, and the frequency range was wide enough (7.82 - 140.5 cps), and equipment was qualified for this frequency range.
VI. CONCLUSION 1
e Comparison and discussion of results indicate that the frequencies identified by analysis and by impedance testing are practically the same, confirming that the method of analysis, and the modelling technique using finite element methodology was correct and adequate.
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Cales. Fo, Calc. No. fmM -0 90 ffs'l SARGENThLUNDY Re,. 0 0 Date 06/01/81 awaiueuses _
c.4.c ac.o f Safety-Related Non-Safety-Related Page A16 of A 16 __,l O C'<eot Commonwee1th Edison Companv e, <ev o '-
Project LaSalle County, Units I & II neviewed by Date Proj. No.4266/4267/6093-00 Equip. No. Approved by ,
Date VII. REFERENCES
- 1. " Equipment Qualification of Low Pressure Core Spray Pump -
LaSalle County 1", Sargent & Lundy, EMD File No. 028197, Rev. 00, March 1981.
- 2. " Final Test Report - SQRT In-Plant Impedance Testing, LaSalle County 1", Transitek, Inc. Job No. 80042, EMD File No. 029601, Rev. 00, March 1981.
- 3. " Impedance Test Results for LPCS Pump" (Add, to Ref. 2 above).
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Cates. For 2" Motor-Operated Gate Valve Calc.No.Layp g 3o 74 9 SARGENT&LUNDY Rev. c o Date 06/01/81
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C " 'C ^ o X Safety-Related Non-Safety-Related Page B1 of B.22 sJ' Client Commonwealth Edison Company Prepared by Nasir Manir Date Project LaSalle County, Units 1 & II Reviewed by Date Proi. No.4266/4267/6093 -00 Equip. No. Approved by Date I. OBJECTIVES The objectives of this study are:
(i) To compare and draw conclusions on equipment adequacy based on the impedance test rest.lt and the existing qualification report.
(ii) To determine equipment adequacy for the additional hydro-
- l dynamic loads. This is of additional concern in view of the high frequency resonances reported in the impedance test.
O a
(iii) To assess the importance of pipe vibration on pipe mounted equipment particularly with regard to the transmissability of high frequency vibration through the i piping system.
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I Cales. For Calc. No. I tryy y,g9 SARGENThLUNDY 1ewainemme-Rev. 0 0 Date 06/01/81 C"'C^"" Safety-Related Non-Safety-Related Page B 2 of B 22 O
Q client Commonwealth Edison Company Prepared by Date Project LaSalle County _, Units I & II Reviewed by Date Proj. No.4266/4267/6093-00 Equip. N o. Approved by D te ANALYTICAL MODEL (3)
A conservative estimate of the minimum natural frequency has been obtained (3) by considering a single degree of freedom-limped mass cantilever model. By inspection it is clear that the yoke section is the weakest section in the valve assembly. Thus a consideration of this section would yield the lowest natural fre-quency for the system.
The single-degree of freedom model is CJ ( _ __ w I L F
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l Figure 1 The natural frequency, f n .is completed using l fn * ~~-II)
(w L3 The computed frequency using (i) above is 62 IIz. (3)
Cales. For Calc. Nr. _cy n - o3d/39 SARGENThlUNDY -
n,,, o o o,,e 06/o t.'al 1a N talN EERS .
C " 'C ^" Safety-Related Non-Safety-Related Page B3 of B22
! Client Commonwealth Edison Company Prepared by Date Project LaSalle County, Units I & II Reviewed by Date Proj. No.4266/4267/6093-00 Equip. No. Approved by Date TEST MODEL
- 1. Geometry. (2) i The geometry of the 2" pipe mounted valve described by the location of the accelerometers is shown below.
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i Cales. For SARGENT4LUNDY Calc. No. fMD -o3d %/--'
, , Rev. 0 0 Date 06/01/81 C"C^"
Safety-Related Non-Safety-Related Page B 4 of B 22 client Commonwealth Edison Company Prepared by O Froject LaSalle County, Units I & II Reviewed by Date Date Proj. No.4:e. 6/4267/6093-00 Equip. No. Approved by Date Discussion of Experimentally Obtained Frequencies & Mode Shapes In the experimental analysis by Transitek (2) node 7 has been excited along the three coordinate exes. The following natural frequencies have been identified.
(i) Seven frequencies based on excitation along the X axis at node 7.
(ii) Nine frequencies based on excitation along the Y axis at Node 7.
(iii) Five frequencies based on excitation along the Z axis at O =oae 7-Based on the above frequencies the structure-mode shapes have been plotted. Cross coupling coefficients have not been included due to the lack of a definite orthogonal structure frame of reference.
Excitation Along X Axi$
Seven equipment natural frequencies have been identified for struc-ture excitation along the X axis at node 7. From the mode shapes it is seen that six of these modes are associated with pipe move-mont. IIence a realistic assessment of the actual equipment fre-quency can be made only if quantitative data of the transmitted vibration is studied. These modes correspond to shapes 1 thru 5 and 7 on pages 28 thru 32 and 33 respectively of the Transitek Report (2).
Cttes. For Calc. No. fs41).oJ6/lf SARGENT%LUNDY
'GNGINYM L .
Rev. o o oate 06/01/81
""C^G Safety-RcSted l'on-Safety-Related Page B 5 of B 22 Client Commonwealth Edison Company Prepared by Date Project LaSalle County, Units I & II Reviewed by Date Proj. No.4266/4267/6093-00 Equip. No. Approved by Date Shape 6 on page 33.of the Transitek Report corresponding to a fre-quency of 60.07 Hz deserves further investigation. Pipe motion at this frequency is minimal in contrast to the rest of the modes. Node seven, which is further away than node 5 from the point of support, displaces more than node 5. These observations suggest a cantilever type valve motion.
A 1 d-o-f vibration analysis of the gate-valve indicates a flexural frequency equal to 60.07 Hz. Thus showing close agreement between the experimental and the 1 d-o-f analytical model. Equipment shape corresponding to this frequency as represented by the wire model is shown on page B3 A typical system frequency corresponding to pipe motion is shown on page Bll.
Excitation Along Y Axis Ecuipment excitation at node 7 along the Y direction is characterized by movement of.the pipe along the Y axis. Some local transmitted vibration is present, however the importance of this vibration can only be assessed by quantitative values for each of the nodes. Pipe vibration can be characterized by the following dominant pipe vibra-tory modes.
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Calcs. For Cafe. No. nA O - 0 3 cg_
SARGENT4LUNDY n,.oo o,,e 06/01/81 G N 2tN SOME -
C'*C^"
Safety-Related Non-Safety-Related Pc:,a B6 of B 22 q Client Commonwealth Edison Company Prepared by Date A) Project LaSalle County, Units I & II Reviewed by Date Proj. No.4266/4267/6093-00 Equip. No. Approved by Date (i) Rocking Mode Typically shapes 1, 2 and 3 pages 36 thru 38 of (2). In this mode.both the ends of the pipe diverge after a common meeting point.
(ii) Parallel Mode 4 Shape 4 page 39 of (2) corresponds closely to this mode. The
' pipe is seen to exhibit a nearly parallel up and down motion.
(iii) Convergent / Divergent Mode In this mode the pipe vibratory motion is such that the pipe axis tends to either diverge or converge from some point either on or off the pipe. These modes are shown on p. 40 thru 44 of (2).
It is clear that none of the above modes constitute a global mode. Local modes associated with pipe transmitted frequen-cies may be present. The ext.ent, and severity of these local modes can be gauged using quantitative nodal displacement data. An example of each of the modes (i) thru (iii) is shown on pages Bllthru B14.
Excitation Along Z Axis Five mode shapes corresponding to five natural frequencies identified are shown on pages 46 thru 50 of (2). All of the modes shown corre-spond to pipe motion. A typical system frequency corresponding to pipe motion is shown on page B15. Pipe motion is cicarly identifiable in this plot.
__.~._ ._ _ _ _ _ -__ - - _ - .__
4 Cales. For Calc. No. Ess a. o 3phf_
SARGENThLUNDY uNGINEERS Rev. 0 0 Date 06/01/81 C "'c ^o c Safety-Related Non-Safety-Related Page B7 of BL 22 Client Commonwealth Edison Company Prepared by Date Project LaSalle County, Units I & II Reviewed by Date Proj. No.4266/4267/6093-00 Equip. N o. Approyed by Date Comparison of Experimental & Analytical Equipment Frequencies Experimentally Obtained Valve Frequencies (2 )
Equipment Frequency Hz Axis Remarks - (Based on Mode Shape) 11.45 X Pipe motion observed - valve stem moves with pipe 13.66 X 18.82 X a a a a a a a a 21.30 X a a a a a a a a 31.89 X " " " " " " ". "
60.07 X Cantilever mode observed 69.57 X Pipe motion observed - valve stem moves with pipe 7.339 Y Pipe motion observed - valve stem moves with pipe 10.7 Y a a a a a a a a 13.16 Y a a a a a a a "
21.46 Y a a a a a a a a Y " a " a a a a a 37.67 70.61 Y " " " a a a a a 73.02 Y a a a n a a a a 90.75 Y n a a a a a a a 94.12 Y 7.216 Z Pipe motion observed - valve stem moves with pipe 6.691 Z Pipe torsional frequency.
21.49 Z Pipe motion observed - valve stem moves with pipe
" a " " a a a a 31.32 Z 37.52 Z O
C*"*
SARGENT4LUNDY N -o3 der
'E NGINZ stL . Rev. 0 0 Date 06/01/81 C " 'C ^"
Safety-Related i.on-Safety-Related Page B8 of B 22 Client Commonwealth Edison Company Prepared by Date Project LaSalle County, Units I & II Reviewed by Date P,roi. No.4266/4267/6093-00 Equip. No. Approved by Date Analytical Equipment Frequency A cantilever frequency of 62 Hz is computed for the valve assembly.
The valve is modeled as indicated in Figure 1 of page B2 The computed frequency compares well with the experimentally observed frequency of 60.07 Hz.
Qualification For Hydrodynamic Loads The valve is qualified for 6g (3). The response spectra shown on pages B16 thru B19 indicate that the acceleration obtained by summing the horizontal slab, vertical wall and slab acceleration values is 1.86g. This value in below the value for which the O
. valve is qualified. Hence the valve is qualified.
i Brief Evaluation of Piping Vibration Tests (4)
The following three piping subsystems were tested:
2" line RI-65C Subsystem l 4" line llP-06 Subsystem 14" line llP-02 Subsystem l
l l
I O
l
\
! b
Cales. For2" Motor Operated Cate Valve Calc.sNo. EMD 030469 SAHGEUTh LUNDY i
ENGINEEFtr.1 -
Rev. o o Date 06/01/81 C"'C^ X Safety-Related Non-Safety-Related Page 09 of B 22
) Client Commonwealth Edison Company Prepared by Nasir Munir Date Project LaSalla County, Units I & II Reviewed by Date Proi. fJo.4266/4267/6093-00Eq uip. No. Approved by Date 1
The original qualification analysis for the 4" & 14" pipe mounted equipment i
indicated that the valves were unacceptably flexibic.
The required design changes were then made and subsequently implemented in i the field.
- The impedance test was performed on the 4" & 14" lines before the required design changes were implemented in the field. Thus no basis for comparison exists between the final qualification report incorporating the required design 4
changes and the Impedance Test performed prior to the incorporation of the neccessary design chqnges.
O For trie case of the 2" pipe line the original qualification report was adequate and the equipment tiested corresponded to the equipment qualified analytically. Hence an excellent basis' of comparison between the pipe frequencies and the equipment frequencies exists.
The fregt.cacies at the valve location given in (4) and reproduced on pages Bil & B12 are identical to the valve frequencies ( pages B7 &B8) given earlier. The average damping ratios expressed in terms of the % of critical damping are 2.487., 3.27. and 2.77, along each of the three orthogonal exes X,Y &Z 1
l respectively. The tests (4),further indicate that the high frequency vibrations I
are attenuated no faster than the low frequency vibrations in the piping system.
i 1
- The data on these design changes were transmitted to NRC thru our transmittal I
O dated 3-10-81 ( EMD File # 028847 ).
i
- --. g #- 9--p -? 9=-g9 +. .- ,.,.p- - . . . -e-.m >p,gy-w,.g,- g-a-e-- eep e.g .-,,..we4-~,eg e--n-ee.- +<v-., --..e--.- e--.. , w- + g- 9
r Cales. For 2" Motor Operated Gate Volve cale. Nm. EMD 030469 SARGENThLUNDY Rev. 0 0 Date 06/01/81 ENGINEERS .
C "^;^ G C X Safety-Related Non-Safety-Related PageB) 0 og B 22 Client Commonwealth Edison Company Prepared by Nasir Munir Date Project LaSalle County, Units I & II Reviewed by Date Proj. No.4266/4267/6093-00 Equip. No. Approved by Date Concluding Remarks The 2" motor operated gate valve is qualified for the additional hydrodynamic loads. The response spectra indicate a maximum acceleration of 1.86g. The valve however can withstand an acceleration of 6 g. Good correlation exists between the analytically con,uted frequency ( 62 Hz) and the experimentally chtained frequency. ( 60.07 Hz),
References
- 1. Final Test Report - SQRT In Plant Impedance Testing LaSalle Co. 1, Transitek, Inc. EMD File No 029461. 3-17-81, i
- 2. Impedance Test Results for 2" Motor Operated Gate Valve
( Add. to Ref. 1 ) 3-17-81.
l l 3. Equipment Qualification of 2" Motor Operated Gate V;1ve LaSalle Co. - 1, Sargent & Lundy EMD File No. 024218.
- 4. Final Test Report Phase I Piping Vibration Tests LaSalle Co. - 1, Transitek, Inc. EMD File No 029605 3-26-81.
'O i
Calc. No: Ef10 .P3 o'f 4't TI-80042-5 Rev. o o Date:.1-'- ri March 23, 1981 Proj. fio N ' I> - " '
- N Page. B.it O f ...E.1'2-
/9 TABLE 4.3.3.1 MODA1. PARAMETERS MEASURED IN THE X DIRECTION MODE FRE0L'ENCY (HZ) DAMPING (Fraction of Critical) 1 11.45 .065 2 13.66 .034 .
3 18.82 .018 4 21.30 .022 5 31. 8 9 .012 I
6 60.10 .009 7 69.57 .014 TABLE 4.3.3.2 MODAL PARAMETERS MEASURED IN THE Y DIRECTION DAMPiflG n MODE FREQUE!1CY (HZ)
C (Fraction of critical) 1 7.34 .016 2 10.77 .063 3 13.16 .036 4 21.4 6 .026 5 37.67 .019 ,
6 70.61 .017 7 73.02 .066 8 90.75 .025
~
9 94.1 2 .020 l
4.3-21
Calc. No: EMD *3" l TI-80042-5 Rev:
- " Date: 4 fl March 23,198'. ,
N Proj. No: 42'6- SP k <
Page..mt 0f _ B2t bn AV TABLE 4.3.3.3
.- MODAL PARAMETERS MEASURED IN THE Z DI'ECTION MODE FREQUENCY (HZ) DAMPING (Fraction of Critical) 1 7.22 .029 ,
2 9.69 .039 3 21.50 .023 -
.029 4 -
31.32 5 37.52 .015 o
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DEFORMATION AT EXTREMITIES OF MOTOR .ea ii i I
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. i b SHAPE 1 MODIFIED Ss 7Z+ COMP,F= 7.216 HZ ( 1.0, 1.0, 0.4, 0.0)=UIEU
(
e Cales. For Calc.No. 636s/69 SARGENT4LUNDY Rev. 0 0 Date 06/01/81
"'C^"
4fety-Related Non-Safety-Refated Page B19 of B. z Client Commonwealth Edison _ Company Prepared by Date Pioiect LaSalle County, Units I & II Reviewed by Date Proi. No.4266/4267/6093-00 Equip. No. ,
Approved by Date FSQUIRED RESPONSE SPECTRUM CURVE
( EMERGENCY CONDITION )
FOR 1 251 - F019 2" VALVE PLUS PIPING O
LOCATED IN REACTOR BUILDING El. 687'0" l
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b) SSE + COLEVY-2 + Envelop of (SRV.LL + SRVASY) si
i i c Cates._ Fer Standby Liquid Level Control Cale. N *. EffD- o34 f/g SARGENT4 LUNDY Pump-Motor Unit
.a NQiNesR*3 .
Rev. o o Daie 06/01/81
"* "C ^ E Safety-Related Non-Safety-Related Page CI of C l8 Client Commonwealth Edison Company Prepared by S. Yassin Date Project LaSalle County, Units I & II Reviewed by Date Proi. No.4266/4267/6093-00 Equip. No.C 41 -C 0 01 A , B A,,ptbved by Date I. OBJECTIVE The objectives of this study are as follows:
a) Comparison between the impedence test results and the existing qualification reports which were done by analysis and tests. J b) To re-assess the adequacy of SLLC Pump for the present pool dynamic loads especially in the high frequency zones reported by the impedence tests conducted in-situ. II.
SUMMARY
OF PERTINENT RESULTS FROM OUALIFICATION REPdRTS O a order to essure eue rueceioae1 retiedi11ev ead overesi11er es we11 f as the structural integrity of the pump and the motor of the Standby , Liquid Level Control, the following reports were issued:
- 1) liand Calculations for Seismic Qualification of the pump fluid end aligning pins, pump hold-down bolts and foundation bolts.
In the same report SRV requalification was completed using 'g' valuer, at 50 IIz for the new response spectra load combinations and PIPSYS loads for the Ramshead combinations. Fluid end aligning pin and pump hold-down bolts were analyzed. (Reference 1) i I i
- 2) Tests were conducted to qualify the motor. The qualification method used is described in detail in Reference 2.
The motor insulation resistance was measured along with the 74v__,.---_-e._,, -
-g-p --.,,,g -g,,..yp- e,- -
Cates. For Calc. No. f,e1)-030 y' d9 SARGENT$LUNDY
,,, Rev. 0 0 Date 06/01/81 C"C^"
Safety-Related Non-Safety-Related Page C 2. of Cf Client Commonwealth Edison Company - Prepared by Date Project LaSalle County, Units I & II Reviewed by Date Proj. No.4266/4267/6093-00 Equip. No. Approved by Date thermal Aging of the stator at 3475- 365*F for 40 hrs. Also the stator and all non-metallic parts were subjected to gamma radiation dosage during a 23-hr period. A seismic test was conducted including resonance search in three axes, OBE Simulation (1.4 9 peak), SSE Simulation (2 g peak). The motor was then operated for 125 minutes while loaded to 40 HP. As for testing the pump, the performance data, as stated by the vendor, may be found in vendor print files. Based on the results of the previous two reports (Ref. 1& 2), O the Stenddy tieuia teve1 conero1 ruma-notor unit was a= 1iriea. See Tables 1 & 2. III.
SUMMARY
OF PERTINENT RESULTS FROM IMPEDENCE TEST REPORT SQRT in-plant impedence test on the SLLC Pump-Motor Unit was conducted on July 14, 1980. The wire frame model of the test geometry is shown in Figure 1. The hydraulic shaker was attached to three places: a) The top of the motor (Nodes 10 and 11). b) The corner of the hydraulic cylinder (Node 18). Further details pertaining method of testing and evaluati6n are given in References 3 and 4. j O The modal parameters as identified by Transitek test are given in l l Table ;3. I r
Cales. F:r Cile.No. f 4fA - 0 34g/f9 SARGENT hLUNDY ,,,. 0 0 o,,e 06/0v81 anamaane - C"C^G Safety-Related Non-Safety-Related Pega C3 of C / /
/ Client Commonwealth Edison Company Prep-ted by Date Project Lanalle County, Units I & II Reviewed by Date Py g. No.4266/4267/6093-00 Equip. No. Approved by Date IV. COMPARISON OF RESULTS J
- 1) The first mode on Ge Test (31 liz) did not appear in Transitek modes. This can be explained by the fact that after coupling the motor with the pump the assembly became stiff enough to eliminate this resonant frequency.
- 2) The Transitek frequencies were inclusive of the frequency range
'of the motor tests (GE) excluding the frequency mentioned in 1).
- 3) From the four frequencies presented by Transitek two .
frequencies, namely 46.05 and 79.5 Hz were matching very 1 Q closely to the GE. tests (48 and 79, 80 Hz).
- 4) The GE tests did not show any frequency beyond 80 Hz on the motor alone. Apparently due to the fact that Transitek tested the Pump-motor assembly, the pump contributed to the appearance of higher frequencies (86.25 and 94.997 Hz).
- 5) Both tests agree that there is no resonant frequency below 30 Hz.
- 6) Even if we assume that the system does have a global mode of
] 31 Hz in the horizontal direction (a very conservative assump-tion), then from tlie corresponding response spectra (Figure 8) we find that the g-value at this Frequency is 0. 559 From Calc. #EMD-021193 the pump was qual lied for 1.2g vertical O end .83 e horiz. 1oeds. A1eo from GE mses the motor was qualified at this (31 Hz) frequency therefore it is acceptable.
Cates. For Cale. Ns.fA1D-63df/ 4f_ SARGENT4LUNDY
..~......_ Rev. O o Date 06/01/81 C"'C^ - l Safety-Related Non-Safety-Related Page C 4 of 8//
Client Commonwealth Edison Company Prepared by Date Project LaSalle County, Units I & II Reviewed by Date Proj. No 4266/4267/6093-00 Equip. No. Approved by Date 1
- 7) From the response spectra at El. 820'6" in the vertical direction and horizontal direction the ZPA frequency is about l 45 liz, therefore, the only range of interest in frequencies might be up to 45 !!z. Both tests show that all frequencies (except 31 Hz for motor only) are above 45 Hz.
IV. CONSIDEPATION OF HICH FREQUENCY RESONANCE For this equipment there is no special evaluation required for the high frequency resonances because the analysis (EMD-021193) has considered both the seismic and hydro-dynamic response spectra load combinations with RAMSHEAD which is more conservative than the ones with T-quencher loads. Also the ZPA frequency in the response spectra curves is about 45 liz. i V. CONCLUSION Comparison and discussion of the results indicate that the frequencies identified by both the analysis, GE teats and Transitek tests are compatible.
/ The stresses calculated in the analysis are conservative based on the response spectra curves used. Thus the equipment is qualified as a class I active equipment.
r Cales. For Calc. No. 2Mp-D30 Y49 SARGENThi. UNDY Rev. 0 0 Date 06/03/81 umoimeeses _ C "'C ^G Safety-Related Non-Safety-Related Page C0 of 8 / 8 O Client Commonwealth Edison Company Prepared by Date Project LaSalle County, Units _I & II Reviewed by Date Proj. No.4266/4267/6093-00 Equip. No. II22 -P 0 3 0 - 3 3 Approved by Date REFERENCES
- 1) " Standby Liquid Control Pump", Stress report Calculation No.
EMD-030493.
- 2) G.E. Report No. 5430-6958 Dated 1/28/77, EMD File No: 030494. ,
- 3) Results of Impedence Test for Standby Liquid Control Pump Transitek Inc. Report, EMD File No. 029471.
- 4) Preliminary Report Sections 1, 2, 3, 5, 6 SQRT IN-PLANT Impedence Tests LaSalle County Station Unit 1, transitek, Inc.
Report 1/7/81. l 1 l 1 l l l l r lO l i
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.s Client Commonwealth Edison Company Prepared by S. Yassin Date d Project LaSalle County, Units I & II Reviewed by Date Proi. No.4266/4267/6093-00 Equip. No. C41-C 001 A , B Approved by Date b
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Client Commonwealth Edison Company Prepared by S. Yassin Date Project LaSalle Countv, Units I & II Reviewed by Date Prof. No.4266/4267/6093-00 Equip. No. C41-C 0 01 A , B Approved by Date 3 Ltt M
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C " 'C ^ " Safety-Related Non-Safety-Related Pa;e C{l of d// Cl;ent Commonwealth Edison Company Prepared by S._Yassin Date Project LaSalle County, Units I & II Reviewed by Date Proj. No.4266/4267/6093-00Ecuio. No.C 41-C 0 017s , B Approved by Date 200 100 -50 33 ~ 20 10 Faco. , ces 2.0 1.0
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y Cales. For Standby Liquid Level Control Cafe. No. fMD- OD +29 _l SARGENT > 1.UnD'I rump-notor unie eNQ6NZa2ME 3 Re 00 03te 06/01/al ! C " 'C ^ C" Safety-Related N on-Safety-Retated Pane C l 2 of d // l Q v Cibat Commonwealth Edison Company Prepared by S. Yassin oate hoject LaSalje County, Units I & II Reviewed by Date Prof. No.4266/4267/6093-00 Equip. No.C41-C 0 01 A , B Approved by oate 200 100 50 33 20 10 FREQ.,ces 2.0 1.0 20.0 3"iiii s i i i viTTTTrm mi isu na i i rr . . i s i n im m. ii . i im m iii> 20.0 15.0- -- . 15.0 gre $2 NORI2. STAS ~ oposCE SP6(7RA - 10.0 1-
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tnq sa. REACTOR HUILDING-ELEVATION : 820'-6" 2% Damping !!orizontal Slab NS-EI? Envelop of a) SSD + CO LEVY-1 b) SSE + Connyy.-2 + E"VUI P f IIRVAI4 + URVASY I c) SSn + Ci!UG. + Envelop of (SRVp,y,y,+ SRVgy)
.r y caks_for Standby Liquid Level Control Cafe. No. I4 f b-o7 M FA9 SARGENT9dUi'DY Pump-Motor unie Re,. c 0 Dai,06/01/81 ' =
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-Motor unit ne,. 0 0 Daie 06/01/a1 C " 'C ^ C' Safety-Related Non-Safety-Re'ated PageCId of d/8 p Client Commonwealth Edison Qompany Prepared by S. Yassin ' Date d* Project LaSalle County, Units I & II Reviewed by Date Prof. No.4266/4267/6093-00 Equip. No. C 41-C 001 A , B Approved by Date Report l'o. E430-6953 Al'htOVED ENCit;EEr.!NG TEST t. A00R ATonlES s -
i A #4AllOh AL TI ChruC AL !.C R vlC($ CO. 00kO* 20 Aa.EJ,d,r7 I9)7 _, NYS ' l TABLEk
- 1. )~ Axis Definitier.s
.X Parrallel to Motor Shatt Z Ferpendicular to Motor Shaf t and Mounting flase Y Lateral to !!otor Shaf t; Parallel to liounting Base 2.) Resonance Frequencies, X' Axis. Resenance Search Response Accelcrometer '
Response Axis Locatiore O ^ D
- x Z
ton oriroust 2. ssert cad Top of end bell End bell, near vent
- C X JicInwc_.ine.ktc=3 er j .. Trcquency l Control AX B Z. l CX Londition .
g 54 0.y - g O' 4 g **stGr r On og ( , i. u. z i - I u.o I - 1 I:stor Urr
.3.) Response Frequencies, Z Axt: Rescnance Search Response Accelercooter Response Axis Lccation A Z Top of Ibusing, Shaf t end B Z Top of end bell C X End of bell, near vent b I Redon< e /.ccek roveter l l Ircquency Control AZ BZ CX Condition i
48 0.2 - - 1.1 Motor On 79 0.2 - - 0.7 Motor On 31 0.2 - - 0.7 'l:otor Off J - 51 0.2 - 0.5 1.5 !!otor Off 55 0.2 - 0.5 - Ibtor Off 60 0.2 0.5 Hotor Off O l.
Cates. For Standby Liquid Level Control y SAP. GENT *dUUDY
- suunnesn: -
Pump-Motor unie Cafe.oate Rev. 0 0 No. pwo 06/01/81 C " 'C ^C' Safety-Related l Non-Safety-Re!ated Pace C 15 or c/# ]1 Client Commonwealth Edison Company Prepared by S. YaSSin Date Project LaSalle County, Units I & II Reviewed by Date Prol. No.4266/4 267/6093-00 Equip. No.C41-C 0 01 A , B Approved by Date {7s . . Report !!o. 5430-6958 APPnOVED EfJGifdEERif4G TEST L ABORATORIEs
/ ;' d -
a ,.u.ount u c.. . cat u n v.e cs co. Date: 28 January 1977 AliVL TABLEI e 4.) Response Frequency, Y Axis Resonance Sev ch ' Response Accelerometer itesponse Axis Location A Y Centei of Ibtor, cbove vent B Z Top of housing, shaft end C Z Top of cad bell Restnnse Accelerometer frequency Control AY BZ CZ Cor.fition 54 0.2 - 1.0 0.8 lbter On 71 0.2 - 1.0 0.6 P,ator On 54 0.2 - 1.1 0.9 lbtor Off 60 0.2 - 1.1 1.0 lbtor Off 80 0.2 - n.7 n.s t%t3r off
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' T M LABEL FREO DAMPING AMPLITUDE PHASE REF RES MODE FLAGS A
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2 79.500 0.013705 1.G406E-02 -1.2826 25X- 25X+ 2 OOO1 1 s -5 A @ 3 86.247 0.014311 1.3808E-02 -0.9032 25X- 25X+ 3 OOO 1 1 ? H o
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- Safety-Related Non-Safety-Refsted Pace CI'l of 0/8 Client Commonwealth Edison Company Prepared by S. Yassin Date Project I 'alle Countv, Units I & II Reviewed by Date Prol. No.4266/4267/6093-00 Equip. No.C41-C 001 A , B Approved by Date TABLE 4 : Compatibon Oc hke*' 0E Onb IMfe$&*1Q ]b$th
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Safety-Related Non-Safety-Refated Pcqe F/nal. or C 18 Client Commonwealth Edison Company Prepared by S. YaSSin Date (m V Project LaSalle County, Units I & II Reviewed by Date Proj. No.4266/4267/6093-00Equio. No.C41-C 0 01 A , B Approved by Date ofWCdM Od Omfges' Son
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^
CaIc. No. E'pp-o 3e f/6L SARGENT E LUNDY Impedance Test and Analytical Fbsults
> ENGINSERS .
Rw. 0 0 Date 06/01/81 C " 'C
- X Safety-Related Non-Sa etv-Related f
Page D 1 of D18 i Client Commonwealth Edison Company Prepared by Tnmail Kininn1 _ Date Project LaSalle County, Units I & II Reviewed by Date Proi. No.4266/4267/6093-00 Equip. No. lVG01S Approved by Date I. OBJECTIVE The objectives of this study can be summarized as follows: a) To assess the comparison between the impedance test results and the existing qualification report. b) To re-assess the adequacy of the equipment for the additional hydrodynamic loadings, particularly in regard to the high frequency resonances reported as a result of impedance tests conducted in-situ.
SUMMARY
OF PERTINENT RESULTS FROM QUALIFICATION REPORT
] II.
The Standby Gas Treatment Equipment Train shown on CVI drawing B453-0001 Rev. B in Ref. 1, was designed and analyzed for seismic and operating loads and was qualified to the effect that it did not suffer any deformations and stresses that would interfere with the i functioning of the units. i I ( The housing framework is treated as a planar frame and one average l bay is investigated each for various parts of the structure, disre-t garding the benefit of interior stiffeners. Frequencies that are hand calculated as a result of plate theory within clastic stability range are prescribed in Table 1 on page D1 ! It can be conservatively stated that minimum frequencies for the O entire unie are 21., 25. end 28.6 ces es e resu1t of taie emetveis. l
" ' C'"" " #3# d '
- SARGENThlUfJDY' Rev. 0 0 Dita 06/01/31 emoiseen _
C " 'C ^ Safety-Related Non-Safety-Related Page D2 of D18 O c' e ' Common ee1tn Edison Comeenv e,ea <ee >< D te Project LaSalle County, Units I & II Reviewed by Date Proj. No.4266/4267/6093-00 Equip. No. Approved by Date I TABLE 1 CALCULATED FREQUENCIES FOR VARIOUS PARTS OF TIIE IVG0lS SGTS EQUIPMENT TRAIN Frequency (cps)
- Part X Y Z Base (Front) 1765.3 29.6 127.2 Base (Rear) 1483.9 24.6 >127.2 O Poor >33 25 , 33 Side Panels >33 >33 21 ,
End Panels 26.6 >33 > 33 Transition 70.9 Inlet Cone: Top => 27.2 Bottom => >33 Sides => 32.5 i
- Directions are indicated on the wire diagram on page D4.
O
. _ . , . . . _ , . . _ , _ _ _ . . . . . . ~ , _ , _ _ . . _ - . . _ . . . _ _ . , , _ . . . . _ . _ . _
Cales. For Calc. ? o. EA4b-o 3s </6 f SARGENThtDNDY Rev. 0 0 o,te 06/01/al CNDN2CRI . C*C^* D18 Safety-fielated Non-Safety-Related Page D3 et G client Commonwealth Edison Company Prepared by Date
, V PrWect LaSalle County, Units I & II Reviewed by Date Prol. ho.4266/4267/6093-00 Equip. No. Approved by Date III.
SUMMARY
OF PERTINENT RESULTS FROM IMPEDANCE TEST REPORT l i SGTS equipment train was shaken in four different orientations at points 58, 86 and 151 as shown on Figure 1 on paged 4 At the time of testing, theaquipment train was completely ins,talled and properly secured to the flocr. All electrical and pneumatic connections were complete. The unit was tested without the charcoal filters because preservation of these units-required that they remain in sealed storage. I The large hydraulic shaker was used to excite the equipment train. The level of force used in the test ranged from 800 pound force O peak to 2500 pound force peak. The acceleration response levels were 0.lg to 0.5g., depending on the location. Details of testing. are given in R, . 2 and Ref. 3. The modal parameters as identified by the tester (Ref. 2, Tables 4.8.1, 4.8.2, 4.8.3) are given on Table 2, page D5. IV. COMPARISON OF RESULTS l A. End Panel: The end panel boundaries are indicated by nodes 1,2,3,4,51,52, 53,54 on the wire diagram (Fig. 1, p. D4) . A minimum frequency of 26.6 cps was identified for this portion of the equipment, by way of analysis. Tester identified nine frequencies for the O seme peruen. Theee frequencies ere 11sted in Teh1e 2, under
*:5 ~( '
( . s
)y A
- i %x g /
,.'$0 *Q g < t 3 15 og 53 e5 ' (,z 45 10 <
,, 1 p 2
__, _u e'3 os - 4 1E 56 2 - 60 -c M 31 6 9 34 of 72 N35 k_ 31 3G g g_
*'i'I.
^3 1 76 N 35 I!# M I
\,3i 30 k 3 @l D2
. 5 13 I gh 3 L $'
a" 79 -'KW g 3' 1 tNwNh9 l
\
a
-[!;N':d
! 141 0 O UMD.,F= UNDEFINED ( 0.6, 1.0, 1.0, O.0)-VIEU FIGURE 1.
Cafes. For Calc.No. r ef). o 9o p'd.9 SARGENT':LUUDY no 00 o,,,0sf01f81 awawaene" C "'C ^ G Safety-Related Non-Safety-Related D5 D18 Paga of Client Commonwealth Edison Company Prepared by Date Project LaSalle County, Units I & II Reviewed by Date Proj. No.4266/4267/6093-00 Equip. No. l Approved by Date TABLE - 2 MEASURED FREQUENCIES FOR SGTS EQUIPMENT TRAIN Frequency Damping Excitation Point (cps) I 151 X + 19.08 0.041 21.01 0.021 26.91 0.028 28.70 0.019 36.09 0.010 40.14 0.016 65.57 0.010 73.40 0.023 81.20 0.007 58 Y + 24.20 0.021 27.40 0.045 (]) 29.90 0.009 36.60 0.005 40.96 0.008 r 45.70 0.003 51.00 0.002
/ 64.90 0.006 78.70 0.030 86.60 0.002 13.60 0.015 86 Z + 28.60 0.050 29.60 0.005 34.60 0 008 39.20 0.005 59.70 0.018 I 63.40 0.011 83.60 0.023 92.10 0.006
< 95.50 0.001 58 Z + 38.40 0.091 53.80 0.041 i 57.00 0.031 64.50 0.001
/~T 97.90 0.034
- %)
l l l t
Cales. For Calc.No.EMD-03o5647 SARGENThLUNDY g,,, o o o,,e 06/01/81 C NGINSEMI . C"C^ Safety-Related Non-Safety-Related Page D6 of D18 Client Commonwealth Edison Company Prepared by Date Project LaSalle County, Units I & II Reviewed by Date Proj. No.4266/4267/6093-00 Equip. N o. Approved by Date excitation point 151 X+ . The range is from 19.08 to 81.20 cps. As seen, analytically identified 26.6 cps frequency is also observed in this list. Yet, two frequencies smaller than 26.6, namely 19.08 and'21.01 cps., also exist. However, inspection of horizontal response spectrum curve indicates that all nine frequencies are in the ZPA range. B. Side Panels and Inlet Cone: Minimum frequency for side panels is identified as 21. cps., by analysis in Z direction and the test results indicate fourteen frequencies affecting various parts of the panels in a range from 28.6 to 97.7 cps. Again, all these frequencies are in the ZPA range of the horizontal spectrum curve. C. Roof: Minimum frequency identified by analysis is 25 cps., in vertical direction. The test results indicate eleven frequencies affecting the roof panels in a range from 13.6 to 86.6 cps. The mode shape for 13.6 cps., frequency is given on Figure 2, paged 7 The maximum deflection is seen to occur at node 58. This particular node (58) is the location where the large shaker was attached on top of thecquipment train to excite the structure during the test. The weight of the shaker is 500 lbs. The inspection of the structure in as built condition indicates no special conditions for the occurance of this frequency strictly in this region. It appears that this frequency is a localized frequency, excited by
O O
^^
m cRevj-c
" " Laba.EY bcaaav2 n% g, g>g_ ]
n b ,9lb3,; b I pg e $s
- 0,
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/ /
- 8 A
e
- 8
{ / /\ A, o // n
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't
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Cales. For Cal:.No. EAfn- OM'E9 SARGENT SLUNDY Rev. 0 0 Date 06/01/81 GNEINiTR2.
""'C^"
Safety-Related Non-Safety-Related Pm D8 at D18 Client Commonwealth Edison Company Prepared by D ate Project LaSalle County, Units I & II Reviewed by Date Proj. No.4266/4267/6093-00 Equip. No. Approved by , Date the own mass of the shaker itself. However, since it is lengthy to prove this argument analytically, 13.6 cps. is considered as a natural frequency of the structure and an equivalent static analysis is carried on for this portion of the structure to assure the structural integrity. A simplified and conservative frame model is considered without the benefit of internal stiffeners. There are two 3 x 2 x 1/4" L angle stiffeners welded to the 1/4" plate forming the casing of the equipment train in this region. The representative frame, cross-section and properties are shown below. Pertinent computations are given on following pages. O
^ D 7, = Z, = I f, d a 97
I, h I, 7, 4
= -f
[ MA y
) Y- k ,7 A s ee lerni f co, s he l3 5 cfS :
t, tv, L .aat g =o.cg 6 L vni,c 4 , s. 9 g 3x2 x L
/z,
. -fr
- ( . .. 1. -. -
E -'
-Y ,
A = (V . /3 i, L se l 1 = e. n i,,e 14
.2 9 " . = = .g g " w I
. }c.
- Gh4 8 In O C = s rc-ye = 2 7a k
Cates. Fe, Cafc. No. Ebib- O.3644 $ SARGENTkLUUDY zw seasznr. Rev. 00 Date 06/01/01 C " 'C ^ Safety-Related Non-S fety-Related Pcge D9 of D18 Client Commonwealth Edison Company Prepared by Date Project LaSalle County, Units I & II Reviewed by Date Pro!. N o.4266/4267/6093-00 Equip. No. Approved by Date load cases : a-) . Dis /rila fed loac( ori CD Ace eta ra lio n l,am v e r lie al < espo r,s e spec./< sin . c u, ve c4 , (.//g Epivdea.f <a heal c/&/r/buIaf lcwcf 4x = m.n o ns 6 4 = w sp #/m v,,3 )~, c f.< 4s , tGt/~;y c~ he ed< Jded:
. /f = p, = wf* y w=vs =. */
94 (.kr 2) ha - Mg = b 12(kt2) Mc . s - " l l 6(htz) w:
~
// = 25 59 ' (97) / ll > 9 7 ( 112. ) = 1oS.T O v = n. s p x 97 /2_ = ,, y . , (j p Ms = Ms = 25 0 1 c97)*/12 x ( n e. ) = 16 8 % . 2- 64 a
Mc*MD = 25 597IJ 7) S X(4+2 ) =(33fg.S ,i,, /d I
Cales. For Calc. No.IAth- 0 34#69 ' SARGENThLUNDY ne,. o o D.ie 06/01/a1 tin 21N20 547, . C " 'C ^ G Nor.-Safety-Related Safety-Related Pace D10 of D18 Client Commonwealth Edison Company Prepared by Date Project LaSalle County, Units I & II Reviewed by Date , Proj. No.4266/4267/6093-00 Equip. No. Approved by Date _ l) J);drdailecl dact n BD 4ccL.cti-fre- Jorg an A ./ <esponse -yech ca ~e Cl, - o c g
, Egu.;m/e .,+ d4/,:Me/ bad Gu = /9 /3 > o.n a n o6=zit N/in y, , C# h 2h+3 = gg.5 LL g 4r e .
pg - m - on li = - f89 5 lb vn NAM 33. z 4
= _ v, = 4 04 t t ) =
e, % A* sk & _ /2L = 17gf.o 66 2 't It 12 Q pf Me=g,-p,f = -1923. s- a AL M s=- ",,b
- u- f *] g{#h = - 52 87 o M -%
MD : Mg - llg.l f 2
, ff ,3 _ f_
c)Dgj,,f,je,ffadan f( [ g,,nf,, a p )
//s = /te 3 (& -
> Ap = .5287.o 4 -(L Na =
- +t F d6 '
> ms= - 27g4 . o s., _gt.
O, vs = 33 .2 a *
> me = 3 - - u-1.199 vs . g3.z (4 -
p, _g.
= ,,,3_ g ;
Cati.For Calc. No. f 41b- 6.40 MG f SARGEUT5LUNDY n, .oo oat,o6/01/a1 Safety-Related l Non-Safety-Related Pace D 3 1 of Dl8 i Client Con.monwealth Edison Company - Prepared by Date Project LaSalle County, Units I & II Reviewed by Date Proj. No.4266/4267/6093-00 Equip. No. Approved by , Date b) ,ees7 lra becf bd m2 .D VI = 97 > 1913 o .zs a o.S= 1 s 1. '7 6 . N, =-//e, := w 2. = 416 3 O v, = -v, = g w s k/uu a l = .gg. 7 s m,=-Ms -(wh/a)(3Lrt 3/04 t s) = M O 2- "-0 Mc .-m = -(w h/z ) B L)/(6fe.+4 ) = -t /3'377 b # k dih e-( n o m e n hs A B C D n Abl. dec( on cD ! //88 2 I /6tB i 13376 5 % /3 3?L S
%-) i, ,, 8y 171?l o 5227.o - 1713 5 12993
,, ,, Ac 3177.o -27M.o - 1299 3 4923T cn>f i-n/ p i 95o.2. -69so.7 -
48377 48377 Lage & mo w ,a t A i- 8 => EMz = 2< 2 06 4 k -lb. . Cer c> p o n di : v' = % '73 7 & , H = 633 5 &.
%A & css : q = rs e.,tt = (st 2 o C .tr i 2.. '7il ),/'14,z o Q =52.(W pi.
IMm . Op -rahng pcssar<. 44 to . c =p o.gog psc lY M Lk Fess ~ a : M? o. sos ~ > 47 17 't 97
"'!? = ft/3/ h-/L.
k 4. pas m . "' Ba~n O $ = Q1r 6 3 4 > 2.764)/%24-. Lszly.pg i
% = 78o9 w ,
<w
Cales. For Calc. No. M- Nfd SARGENTkLUNDY Ru. 0 0 Date 06/01/al
.aNGINEEpte _
C ""C ^" Safety-Related Non-Safety-Related Pa.je D12 of D18 Client Commonwealth Edison Comoany l'repared by Date Project LaSalle County, Units I & II Reviewed by Date Proj. No.4266/4267/6093-00 Equip. No. Approved by Date Therefore, the final bending and pressure load stress (shear and membrane stresses are negligible) is 9802. psi. for combined seismic, hydrodynamic and operating loads. J There are five other ' frequencies, namely 24.2, 27.4, 29.9, 36.6 and 40.96 cps., that have acceleration values slightly higher then the ZPA value. Their combined effect is: 2 a c
= (1.25 + 1.05 + 1.03)2 4 12+ 0.86 g a = 3.58 g c
O If 13.6 cps. frequency is also considered to exist and all six frequencies are excited simultaneously, the acceleration value will be: a = 7.33 g. c Comparing both these va'ues and, values and results described on pages D8-Dlt it can be concluded that an acceleration of 7.339 does t not present any problems; the section considered has considerable I margin up to allowable stress. Elsewhere on the structure, the typical section will have one 3 x 2 x 1/4 angle stiffener, instead of two, reducing the area and moment of inertia to slightly lesser ! values, yet by inspection of figure 2, it is obvious that 13.6 cps., O does not participate at these sections, making sure a c = 3.589 l l 1-- _. , _ _ . . _ . _ _ . . - _ _
Catts. For Calc. No. fMD- c3643 cf SARGEfJTklufJDY ~n,,, 0 0 o,,,06/01/81
>eNWNTERS .
C "C ^ " Safety-Related Non-Safety-Related Paga D13 og D18 Chant Commonwealth Edison Company Prepared by Date Project LaSalle County, Units I & II Reviewed by Date 2 Proj. No.4266/4267/6093-00 Equip. No. Approved by Date i This value of acceleration, in spite of lesser stiffness, still does not create an overstress problem. 't D. Instruments: i There are various instruments mounted on the side panels of the SGTS Equipment Train, mostly on the east side. Differential pressure transmitters and numerous thermometers and switches are basically mounted on the 1/4 inch plate of the housing unit. Special measurements were done at the locations where these instruments are mounted and no new resonances were identified ] beyond those which existed as global resonances on the SGTS Equipment Train. Since all the instruments are mounted on side panels, the frequencies identified before correspond to the ZPA range on the horizontal response spectra curve for all modes. Consequently, it can be concluded that, the mounted instruments 1 will experience acceleration values of the ZPA,namely 0.6g in { case of the combined seismic-hydrodynamic events. 4 V. CONSIDERATION OF HIGH FREQUENCY RESONANCES Inspection of Table 1, page D2 indicates that existence of high frequency modes were predicted by analysis, but were not identified in most cases. The test results that are summarized on Table 2, page D5 shows that there are a number of high frequency modes existing for various parts of the equipment. In all cases, for the horizontal direc ion, frequencies that are above 16. cps., and for the vertical
Cafes. For Calc. No.j ph. 9.y/R SARGEf1ThlUf3DY
' ENGINEERS ,
Rev. 0 0 Date 06/01/81 C"'C^" Safety-Related Nori-Safety-Reisted Page D14 of D18 Client Commonwealth Edison Company Prepared by - Date Project LaSalle County, Units I & II Reviewed by Date Proj. No.4266/4267/6093' 00Equ;p. No. Approved by Date direction frequencies above 40 cps have corresponding response acceleration values in their ZPA range. Therefore, these frequencies have no significance as far as the structural integrity and operability are concerned. (The reuponse spectra curves are lncluded at the end
, of this report.)
VI. CONDLUSIONS Comparison and. discussion of results indica'te that the frequencies identified by analysis and by testing generally agree; except three modes, two of which identified for the rear panel and one for the roof. Yet, all the frequencies considered both in lower and higher ranges indicate no serious effects on the structural integrity and operability of the SGTS Equipment Train, verifying the adequacy of this equipment for seismic, hydrodynamic and operating loads. O
Cales. For Calc. No. fgh- o 76 /69 SARGEfiThlUflDY Rev. 0 0 Date 06/01/81 emcaco l Safety-Re!ated
, Non-hfety-Related Page D15 of D18 O c'>e i Commonweaieh Edison Comnenv ereaa,ee v Date Project LaSalle County, Units I & II Reviewed by Date 1 Equip. No.
Proj. No.4266/4267/6093 00 Approvad by Date VII. REFERENCES
- 1. " Filter Housing Seismic Analysis For 1R2VG0lS" EMD File No. 007725,
- 2. " Qualification Documents For SGTS Equipment Train 1,2VG0lS",
J2583, 11/10/80.
- 3. " Final Test Report - SQRT In-Plant Impedance Testing, LaSalle Co. 1", Transitek Inc. Job No. 80042, EMD File No. 029601-00, March 1981.
- 4. " Impedance Test Results For SGTS Equipment Train,"
O (Add. to Ref. 3 above).
- 5. Response Spectrum Curves, Reaci.or Building, El. 820'-0".
(pp Dl6-D18 of this report) i i i O
COW:0iniEALTH Edison cc:pAny CULT C'CWaMSV - 1 L2/ CA'. - M @- l 3 ,{. .
- 350[530 E.UUI.'If I
D2S'3N GY-(( Gm.n,, n'T ~ , /&? i,~,w.-...-..e-
.3 -
CKZ'.ED C'/fy?2MC. -DJi NMeOHT 2 ?- C ? 2.~7 n ' ~ ~ ~ ' ' U ~ Cale..Ito: EMD ANW - ' ntv.en. ( o l Rev.. 60 Dai,a.c!h/./.f./ l
~
^u l/-22-e1
. . . Proj.110: 6693 - o o pag, bl6 0( D (W '"'" " 'LI #? I -
y T m xner,ces 200 100 50 33 20 10 2.0 - 1.0 20.0 nn imm u n uN.. uw '20.0
.";iiii rsii n i i i i . i .i n .n u, no iin n ., i i a' 15.0 f15.0 50.0 ..-_
i 4 , _ 10.0 o.0 - i - s.0 l- . 6.0 - - - - - - - - : -- 6.0 l 4.0 -- - --- . . . . . . _ 4.0 3.0
~ ~
3.0 . .
.a 2.0 -- --
2.0
- u. ,
r, -
!.s ___ _ ..__ _ _..___ _.
- /
~
1.5 V . - __ i _ .s
. 1.0- -
l.0 n u 0.8 h -
,I l,/ f. 0.8 u
- ~ ' ~
0.6- -- -
/
0.6 y g m - .
. __. H -
M g s g -- _ _ _ 0.4 Lq o,4 ; __
~
0.3 - - -- --
} 0.3 o,2 7 -.. - - ..- _ . . . _. . . -
0.2 o,15 3 . - _. . ____. ._. 0.15
~ ~
,0,10 _ . ._ _ . ._. . __ __
0.10 _ . ..q _._ 0.08 h 0.08
-- -- f __. __. ..___. . . _
j f-}.
.n, . _
h o'.05 5 ' ' ' ' !w2 2'" '"'!'"'"" 1 IJ ' ' ' ' ' '
" .2 " ! 'n.3' ' "d ' .6
".'4.'11 1.
22 . 0.05
. C O 's .01' ' ' ' ' ". '0 2 .04 .06 .1 enu sw.
- REACTOR llUILDING-PLEVA[ ION : 820'-6" ~ 2f Damping Hoi-iz ntar Slab NS-E" Envelop of a) SSS + CO LEVY-1 b) SSE _ LE,VY-2 + CO + Unvelop of ( R ' ann Uk .+. SRVAsy) n... : 3
C_ CU~d!T Com'.OpmALT!! EDISON CO TANY i l. ()p PT:OJZ~T_.J_. Lfg,gyiff tunv - 1 c. 7 J O No. M !j'!:iH I l L a ,[End v , 5U N ] [g j r U 'ir q y p.=.E'3M i (; Z Cnwgl ,'y- --
/-))-ff .JJ C#r.CZ -
CK..C:ED C'.'$ EiL.----CRe-eo S:Gi:. I p u C.: 27 g' V Calc. Ho: EMD a Md*'# r y: ,_ e s pg NM/n'l m' sm- O '
.- gsq q- c o 01.1 a 1.n c Proj. Nog g ,x,,,,, .jg l j !
Par , __
~ -
-- -- f 200 100 50 33 20 10 '
2.0 1.0 20.0 7 i i i i i 11 s u i on ..u -n u i n cu n i 6 6 i,,i iui u -. .ni o u u nii"i i
'i(20.0 .
~
15.0 ; 15.0 10.0
~
10.0 - 8.0
~
-- d- !
l
~
8.0 r 1
.6.0 l
6.0 l_ i
. - i i _
~4.0 - - - -I 4.0
~~ ' ~
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, p _
I 2.0 $ - [ 2.0
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~
!.5 .
- I ~
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- l
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,'[,
~
1.0-. .
\
.s -
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~
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- nc 0.8 sy u
,/I '
x1
\ ~
c u i 0.6 7 /
/
x 0.6
/ x _ _h t
/ \ :t N 0.1 -
0.4 N 0.3-~ .
} 0.3 0.2 -- -- - - - - ----
[ 0.2 - l ' n' ,15 h .-- -
,' O.15 c -
t - -
~
0.10 [- - -- - - .-- - 0.10
'- !I i -
0.08 l 0.08 - - J, _ ; .. A r P e 0.05
"" ' ' ' ' ' ' ' ' " ' u, .
wa '" ' 'l' ' ' ' ' ' ' " im ' " ""
' ' O.05
.005 .01 .02 ' ' ". 0 4 .06 .1 .2 ' ' ".'3 4 .6 ' . 8 1.
I e. . . rnM se. ' 2is Dairpig Vertical / Wall REACTOR DUILDINC- ELEVATION : 820'-6" ~ Envelop of a) SSE + CO ggyy_1 , b') S'E S ~ + COm+ Envelop of _ (SW + SRVw) -
1?UM.$l S' h ~~i' ' 1Y*7T YIMI ? FhME CDM g (1, P9~'J i A.u 2, L [cd ((vi.a,tJ -l p .c...sc.n. rz, ,y c,., ,, .7m. . .-.:_ g.,i sm-- f js ./f
, ( '. CdC.J'I'Z -
CICCMED i-T,(2 di~ r2W-. v-g'..IET 2 3 C. 2 7 .
?
^- ^
- mw_
u v. n o. o T _Cate. tio: EhiD No'#? i ()
~
acy:_; M Dd:d'd m /~e 2 - m i ~ Proj. Mc: .Adb- 0 E---- -- - 8"8N %- I -
. Page.....Ri3... 0L 32R -.-.-am:ncy, ces -
2 200 100 50 33 ,s 20 10 2.0 1.0 20.0 yr i i i i init usi un ca ini m bia i i 1 i - iiii nu uu rw ou on .m i
.ii 20.0_
15.0
~
15.0 10.0 10.0 ~
.i __
34 8.0 - 8.0 [- - --- 1 i l . i ! t-
# I~
6.0 ?- - - -- - -- kg 6.0 -
- ~ .
{. --
.- \ .
4.0
\ -
4.0 .
- f ~
3.0 - 3.0 -
~
~
f% 2.0 - 2*0--- - - -
/^ g
\e. ,y :
*A
/ -
l 1. 5 ._ is.
\
( ; - J , - m -
~i, 1.0 I.0 h - -
4r' ! t iA11 _.
'! A 0.8 I - ., f)
Og ._ #_ d] g j- ; j-
'N .=
' - I 0.6 g ' g 0.6 4 NJ h-3 -
% :1 S o,4 - -
0.4 4
~
0.3 0.3 .
~
o,y. _.. _._ _.. . . _ . - . __. _. . _ . _ 0.2 o , j e, . ._ .. _. . . . ._ .__ 0.15 0.10 h .- - - - - . - - . -
--M, 0.10
' : 0.08 h
~o,og _ . . _ __ __
-j l l l}
l I i l- . l_ i _
!"" ' 2.m 0.05 0 ' O S < ""
C 4 ' " " 'm "" - ' -2 .
' ' ' l ' '.O " " "."3 ' ' ' ' " " l "."6 .8 1.
l h .C05 .01 .02 ' ' ' . :0 4 .06 taH, sx.
.1 2,
4 REACTOR DUILDING-ELEVATION : 820'-6" 25 Dhmping Vertical / Slab
- Envelope of a) SSE + CO LEVY-1 .
l b) SSE + CO LEVI,-2 + Envelop of (SRVALL+ SRVASY) L
' c)
-__ - - SSE + C. HUG. + nn.velop of ( S RV . . . + S RV . _ ,, )
7 . ..
Cates. For SRM & IRM Preamplifier Cafe. No. BfD-oJo 91N SARGENT&LUUDY Enclosure Rev. 0 0 Dat3 06/01/al icNWNEERS
" " " ^ "
X Safety-Related Non-Saf ety-Related ' Page E l cf E43
-D d Client Commonwealth Edison Connany Prepared by S. Yassin Date Project LaSalle County, Units I & II Reviewad by Date Proj. No.4266/4267/6093-00 Equip. No.H 2 2 - P 0 3 0 - 3 3 Approved by Date I. OBJECTIVE The objective of this study can be summarized as follows:
a) To assess the comparison between the impedence test results for SRM & IRM Preamplifier Enclosure and the existing quali-fication report. b) To re-assess the adequacy of SRM & IRM Preamplifier Enclosure for the additional pool dynamic' loads particularly in the region of high frequency resonances. II.
SUMMARY
OF PERTINENT RESULTS FROM QUALIFICATION REPORT Qualification report presented the results of a dynamic analysis (Ref. 1) using S&L SAP-IV computer program with-seismic loading in X, Y& Z directions for SRM & IRM Preamplifiers Enclonures which were welded on the Floor (P030 & P033) by two legs.. Stress i in P030 & P033 Panels were considered more critical than P031 & l P032 which are bolted to the vertical wall. l The mathematical model consisted of 74 nodes, 62 beam elements , and 66 plate elements (See Figures 1 & 2). The response spec-i tra method was used to calculate the forces in the model's elements. The response spectra curves used in the analysis were obtained i O . sy enve1oging SSE (2s oemging) and 08E (1s oemging) seismic i loadings at EL 740'-0" of the reactor building. 'i i s
Ca!cs. For Calc. No. EsfD, a33f$1 SARGENTh LUNDY Ra 00 Date 06/01/81
' ENGINE N Hm .
~
" * ^ " Safety-Refated Non-Safety-Related Page p> of v41 CHent Commonwea]th Edison Company Prepared by Date Project LaSalle County, Units I & II Reviewed by Date Proj. No.4266/4267/6093-00Equia. No.II 2 2-P 0 30 - 3 3 Approved by Date i
Figures 3 & 4 represent the enveloped response spectra for horizontal and vertical directions. i In this model all devices and attachments including the weight 1 l of the preamplifiers were considered for their masses which' i' were distributed on the nearest nodes. 1 j The weight of each amplifier was conservatively assumed to be 50 lb. which tended to give smaller values for resonant frequen-cies. 1 Based on the results of analysis as presented in Reference 1 the SRM & IRM Preamplifier Enclosures were qualified as a reliable and functional. structure. I ~ Table 1 shows the resonant frequencies for the enclosure in the analysis. As can be seen from this table, the fundamental i ! frequency of the enclosure is 7.35 IIz. 1 ! III.
SUMMARY
OF PERTINENT RESULTS FROM IMPEDENCE TEST REPORT i l . SQRT in-plant impedence testing on the equipment was done on l
) July 27, 1980. The three preamplifiers were installed and were operational at the time of testing. The panel (III22-P 03 0 ) with L=30", W=17", II=36" was mounted by molly bolts secured to the concrete wall. For unknown reasons, the wall had high (0.5g) i
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Calcs. For Ce!c. No. &MD-036 +d' 9 SARGEUT4 LUNDY n, 00 o,,,06/01/83 1aNQlNEERM C ""C ^ * Safety-Related Noa-Safety- Related Page E3 of E43 Client Commonwealth Edison Company Prepared by Date Project LaSalle County, Units I & II Reviewed by Date Proj. No.4266/4267/6093-00 Equip. No.H 2 2 -P 0 3 0 - 3 3 Approved by Date ambient vibrations. The panel was excited by both electromag-netic shaker and the hammer blows. Excitation by electromagnetic shaker and the large hammer was done in three directions while response was measured in the Z direction. The wire diagram of
. the tested panel is shown in Figures 5 & 6. The preamplifiers were excited separately by the use of the small (3 oz. ) hammers while the response was measured at the points pictured in Fig. 7.
Figure 8 is a representative transfer function using the large hammer with the response in the Z direction. Figures 9, 10 and 11 are representative transfer functions as excited by the elec-tromagnetic shaker in the Y, X and Z directions, respectively. Note that for the two Z direction tests, resonances are equiva-4 lent. l Table 2 lists the resonant frequencies and dampings determined l from analytical fits to the test data. The cross co2pling coef-I ficients for each resonance are listed in Table 3. Figures 12 through 17 are composite mode shapes associated with
~
[ I the resonant frequencies in the Z direction. Figure 18 through 20 are the mode shapes associated with the resonant frequencies l ! in the Y direction while Figures 21 through 25 are associated with the X-direction. According to the Impedence Test report, the results show many resonances in the 30-100 Hz range. _ .-_ ..m -
Catcs. For Calc. No. EA1p - c3pi&f SARGEilT h LUfJDY Dat,06/01/a1 nev. 0 0
>:NTIN UR; .
g C " 'C ^ " Safety-Related Non-Safety-R elated Page E4 of E43 l Client Commonwealth Edison Comp _any Prepared by Date (d Project LaSalle County, Units I & II Reviewed by Date Proj. No.4266/4267/6093-00 Equip. No._}I2 2-P 0 3 0- 3 3_ Approved by Date IV. COMPARISON OF TIIE RESULTS
- a. Wire Frame model in Impedence Test Vs. Finite Element Model:
By inspection of the wire frame model (Figures 26, 27) it is indicated that t'he measurements were ta' ken at three or four points of each corner of the enclosure plus the CG of the side of each plate. For the preamplifiers, measurements were taken at each corner and the midpoints (Pts. 32, 37 & 42). Essentially, the wire frame model is very similar to the finite element model. The global axes for each model are as follows:
'O y> XT = -X3, YT=ZAr ZT = Yg Where T = Impedence Test, A = Analysis as shown in Figure 27.
Table 4 shows the nodal points in the wire frame and the corresponding nodal point (s) in the analysis for comparison.
- b. Frequency range covered by analysis is inclusive of the frequency range presented by tests up to about 63 IIz which is the cut off frequency in the analysis,
- c. Due to the fact that the preamplifiers' masses were lumped at the nearest nodes on the panel's sides the first mode in the analysis was lower (7. 35 IIz) vs. the first mode in the tests (10. 4 IIz) . Also in the analysis the weight of G each preamplifier was assumed to be 50 lbs. which is very V
Calcs. For Calc. No. gAQ- 836//S 9 SARGEfjTtLUflDY s3NGIN35M; . Rev. 0 0 Daie 06/01/al C"C^" Safety-Related Non-Safety-Related pga E5 of E43 Client Commonwealth Edis_on Compiiny Prepared by Da:e Project LaSalle County, Units I & II Reviewed by Date Prol. No.4266/4267/6093 -00 Equip No.H2 2-P0 3 0-3 3 Approved by Date conservative since the average weight of each is 21 lbs. As a result of this assumption the first mode in the analy-sis-tended to be lower than the tested panel. Another factor which contributed to this high first mode is the fact that in the test the shaker-did not have enough energy to excite the panel at a frequency below 10 Hz.
- d. By comparing the second mode in both the test and the analysis 20.8 Hz in test vs. 17.92 Hz in the analysis it can be noticed that they are comparable because of the excess weight of the preamplifiers assumed in the analysis and the nature of the finite element model in assuming lumped mass versus distribu-ted mass actually present and reflected in the test results.
- e. A major difference in the two models is that the model ana-lyzed was mounted on the floor by two legs while the panel j tests was one which was mounted on the wall. That tended l to give higher resonant frequencies in the test rhan in the analysis due to the flexibility of the leg supports.
- f. The impedence tests showed two frequencies 29.5 and 30.7 Hz which were not shown in the analysis results. From the mode shape composite associated with 29.5 Hz (Figure 12) it can be shown that it is a local mode for the door at node No. 25 of the wire diagram where there is no instrument located hence
({}
. it has no ef fect on its performance.
e-
Cates. For Calc. No. f/A/)- dE e/( 7 SARGEUThLUNDY "g,, o o o,,e 06/01/el 7 EN GINM fq E . C ' "C ^ Safety-Related Non-Safety-Related Page E 6 of E43 Client Commonwealth Edison Company Prepared by Date Project LaSalle County, Units I & II Reviesved by Date Proj. No.4266/4267/6093-00Equis. No.H 2 2-P 0 3 0 - 3 3 Approved by Date
- g. As a conservative approach by inspecting the maximum stresses which might result due to the frequencies 29.5 and 30.7 Hz in the panel the following calculations were made:
From Reference l' the maximum stresses in the, beam element m16100 psi. By multiplying this steess by a factor K where K = 2gmax + 9 g = g value corresponding to the given 2gmax 9" " Y gmax = maximum g value in the Response Spectra Curve 2 (1. 9 ) +. 7 K= 2 (1. 9 )
=
1.184 (f = 29.5 to 30.7 Hz) Therefore
..S max = 19062 psi ( 25,500 psi allowable (.7 Sy)
Hence it is safe. Table 5 shows the values of k for every mode.
- h. As mentioned before due to the fact that the cut-off fre-quency in the analysis was about 60 Hz, any frequency above this number did not show in the results. However, sirce the ZPA frequency for this equipment is 50 Hz, frequencies higher than this value are not important ,
from the qualification point of view.
- i. In general there is a good agreement between the analytical O a#a ene test resu1es-
- -- .. -. ~- . . . Eu.1 Cales. Fce . Calc. No. f~4fh- Q36 M4 9 SARGEi'JTALUNDY g,, o o
> enfalNSEFlac o,,a06/01/al g
C " 'C ^
- Safety-Related I Non-Safety-Related .-Page E7 of .::4 3 Client Co_mmonwealth Edison Comoanv Prepara1 by Date Project LaSalle Couhty, Units I & II Reviewed by Date Proi. No.4266/4267/6093-00 Equip. no.II 2 2-P 0 3 0- 3 3 Aprroved by Date V. CONSIDERATION OF HIGH FREQUENCY RESONANCES In the case of SRM & IRM Preamplifier Enclosures there is no special evaluation required for the high frequency resonalices at this stage. The reason for this is the fact that the ZPA frequency at the EL 740'-0" is about 50 Hz., (considering all seismic and hydrodynamic loads Figures 28, 29 & 30), while in the existing qualification analysis frequencies up to 65 Hz are already accounted for.
VI. CONCLUSION Comparison between the impedence test results and the analysis done by S&L indicates that the frequencies identified are practically the same. Some of the frequencies were not identi-fied in the analysis due to modeling techniques but by conser- j t vatively estimating the stresses the maximum stress in any beam ) ic still less than the allowables hence acceptable. As a con-clusion the method of analysis and modeling techniques were correct and adequate. i O i
~ _ ._ . _ _ .- g Csles. For Cale. No.2)lD-03 t Ki?
SARGENT&LUNDY E N GIN f!E f18 .. Rev. 0 0 Date 06/0 Val C"*^ Safety-Related Non-Safety-Rew 3 Page ES of E4'3 O Client Commonwealth Edison Cotnpany Prepared by Date Project LaSalle County, Units I & II Reviewed by Date , Proj. No.4266/4267/6093-00 Equip. No.H 22-P 0 3 0- 3 3 Approved by Date ., VII. REFERENCES
- 1. " Qualification Report for SRM & IRM Preamplifier Enc osure" i EMD Calc. # EMD-030188, Dated 5/26/81.
- 2. Impedence Tect For SRM & IRM Preamplifier Enclosure, Transitek Inc, EMD File No. 029474, dated 3/10/81.
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REACTOR BUILDING-ELEVATION : 740' 2% Otinp'ing " Vertical Slab' Envelop of a) SSE + CO ' Im VY-1 . b) SSE + CO Lr.,VY 9 + Envelop of (SRrALL + SRVAsy)
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rd.y;a, rl,). /. gg a._ . WOl[ $ i $$$0NA NT* V R E Q Q ffj( j$ $ fg y g y ,g. yQ PRINT OF FREQUENCIES MODE CIRCULAR T Ot. E R ANC E FRECUENCY FRECUENCY PERICO NUMCER (SEC) (RAO/SEC) (CYCLES /SEC) 4018+02 7350401 .13GO+00 7110-08 1 1792+02 .5581-01 47G4-07 2 .1126+03
.2300402 4348-01 5725-08 3 .1445+03 1516+03 .2413+02 4145-01 .2441-07 4
4
.2433+03 .3872+02 .2583-01 .629G-07 5 .
4G22+02 .2164-01 4740-07 6 .2904+03 4898+02 .2042-01 .5G14-07
' 7 .307.7*03 i
.3168*03 .5041402 1984-01 .3292-07 8
( ~g .5589402 .1789-01 .3G35-OG I 9 .3511*O3 () .6288+02 1590-01 1205-06 10 .3951+03 TABLE 2A : RESOtJANT FREQUENCIES FovuO p/ IMPEDEHCC TEST l S RECORDS #IN USE REC 1: 29.500 HZ SRM/IRM PANEL Z-AXIS REC 2: 95.100 HZ SRM/IRM PANEL Z-AXIS REC 3: VS4.100 HZ SRM/IRf1 PANEL Z-AXIS v70.900 H7. SRM/IRM PANEL Z-AXIS REC 4: REC 5: 76.000 HZ SRM/IRM PANEL Z-AXIS REC 6: 96.200 HZ SRM/IRM PANEL Z-AXIS REC 7: V37.200 HZ SRM/IRM PREAMPLIFIER Z-AXIS REC 8: 572.500 HZ SRM/IRM PANEL Y-AXIS REC 9: v30.700 HZ SRM/IRM PANEL Y-AXIS REC 11: L21.100 HZ SF%IPM PANEL Y-AXIS REC 12: vS3.200 HZ '< IFM PANEL X-AXIS REC 13: t/75.900 H' ' P 'IFM PANEL X-AXIS
,o REC 14: V 20. 800 K'" > > . 'IRM PANEL X-AXIS
- U REC 15: v10.400 H; SkWIRM PANEL X-AXIS' n
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- 1 29.5 4
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SARGEfF LUfjDY Caks. For Reactor Building Isolation Calc. No.MBlfpff_ Dampers Rev. 0 0 Date 06/01/81
- newc wmunn -
' ""~C' X Saftty-Retsted Non-Safety-Related j Page F1 of P29 O
l Client Commonwealth Edison Comp _any Frepared by 6 YAMM Date d[NI Project LaSalle County, Units I & II
~
Reviewed by Date VTOTYXLE Proj. No.4266/4267/6093-00Enuip. N o. VR05YA&R Approved by Date I. OBJECTIVES The objectives of this report are as follows: a) Comparison between the results of the impedance test and the existing qualification report for Reactor Building Isolation dampers. b) To re-assess the adequacy of the dampers for the present pool dynamic loads especially in the high frequency zones reported by the impedence tests conducted in-situ. This comparison will be based on the response spectra at El. 791'00" for the Auxiliary Building (Spectra No. : 105DB-NA, 105DB-EW, ll4DB-VW). II.
SUMMARY
OF PERTINENT RESULTS FROM OUALIFICATION REPORT n In this qualification report the valves were analyzed for static, b seismic and dynamic loads (Ref.1). Figure 1 illustrates a schematic descrpition of the dampers. As shown, the VR04YA&B valves are held open by air cylinders, and close to seal the building at 1/4" H 2O negative pressure. These two valves are made with aluminum valve plates. The VR05YA&B valves are also held open by air cylinders. With no flow through
< the valve and the air cylinders vented the springs will close the valve and will maintain the valve closed against a 1/4" H 2O reverse differential pressure trying to open the valve. These valves are made with steel valve plates and special bracing (struts) for high pressure strength.
O ^ = e u m i = 9 e n e v a 1v e o e te e s a s i m e t r = = v e r ec a 91 e t e t h e " e te re 1-frequency of the steel valve (worst case) was found to be 231 Hz.
'Since this frequency exceeds 33 Hz (ZPA frequency) the dampers were considered rigid. The ZPA accelerations at El. 786'6" were L
U - Cales. For Calc. fJo.XAfh- 033 fQ9 SARGENThLUNDY n,., o o ny,0gf01f01 2nNGINEERS - C"C^ F2 of / ,29 Safety-Refated Non-Safety-Rel ted Page O Client Commonwealth Edison Comp _any Prepared by Date Project LaSalle County, Units I & II Reviewed by Data Proj. No.4266/4267/6093-00 Equip. No. Approved by Date used for the static analysis of the rigid parts. Table 1 shows the ZPA and maximum g values used in both the horizontal and vertical directions. As for the valve plates, which constituted a flexible system,a factor of 1.5 cf the peak loads was used in the calculations to conserva-tively account for the higher mode participation. Multiplying the maximum seismic horizontal loads (3.3 g) by a factor of 1.5 the. equivalent static load would be 5.0 g which was the basis for the valve plates' design.
- Using the value 5.1 g > 5 g the seismic equivalent pressure on the plates was calculated and it was shown that both types of valves
, aluminum and steel plates,are safe where the stresses for the aluminum plates (VR04YA&B) did not exceed 0.5 Sy, i.e. 24.5 ksi.
The stresses on the steel plates (VR05YA&YB) did not exceed the l allowables 7.5 Sm.in the upset conditions i.e. 26250 psi (SA-515 Gr 70 at 300 F). The vertical supports of the valve plates were qualified based on a horizontal seismic load of 0.575g (Rigid part) which was larger than the resultant of the horizontal ZPA loads in Table 1 (0.538g). i l Table 2 illustrates a summary of the results based on which the dampers were qualified. l L . . - . . _ , _ . . _ _ . - - - . _ _ _ _ , _ . . _ _ _ . _ . - _ ~ . _ . _ . . _ . - . , . . - , . ~ . _ _ . . . _ - _ _ . . _ . . . _ _ _ . - - _ - .
v L m. Cates. For Caic. No. K4ff]- Cf & SARGETjThlUiJDY g,,, o o g,,, oce n1
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z2NCIINh EHR - C"*^ Safety-Related Non-Safety-Reined Page F3 of grf O client Commonwealth Edison Company Prepared by Date Project LaSalle County, Units I & II Reviewed by Date VROTYX&B Proj. No.4266/4267/6093-00 Equip. N o. VROSYA&B Approved by Date In the mean time ASCO Valves (831655 & 631667) were tested in the lab where it withstood 7.5g and 8.5g loads respectively in all altitudes and pressure ranges (10 to 125 Psig & 10-40 Hz). (Ref. 2& 3). III.
SUMMARY
OF PERTINENT RESULTS FROM IMPEDENCE TEST REPORT SQRT in-plant impedence testing on the Reactor Building Isolation Dampern was done on August 20, 1980. The lVR05YB steel damper was chosen to represent the worst case. The damper consisted of two plates (leaves) which are heavily reinforced bolted plates, pneumatic actuators and a square cross section vertical support nember. The test has concentrated on the square vertical support and the right damper place as viewed from inside the ventill_ation tube. The wire diagrams for these parts are shown in Figures 2 and 3. The damper was fully installed- and operational at the time of the test. The damper was tested with the plates in the closed position that is the position that would not permit flow through the vent (Ref. 4). Method Of Testing The damper was tested by the impulse technique in all data col-l lection. The vertical support was impulsed in both the axial (Y) i i and horizontal (X&Z) directions. Testing on the plates was per-formed perpindicular to the direction of the plate (Z direction). Figures 4 through 16 depict the results of the impedence tests
Cales. For Cale. No. Aff)-o go f'M ~ SA!1GEfjTiLUfJDY n,,, o o n,,,oefo1f31
, IG N GINEERFA -
- "'C^GO Safety-Related F4 of p , M Non-Safety-Related Fage l
Client Commonwealth Edison Company Prepared by Date Project - LaSalle County, Units I & II Reviewed by Date VTOTYT&B Proi. No.4266/4267/6093-00 Equip. No. VR05YA&B Approved by Date along with the modes shapes. The modal parameters-for the dampers are shown in Table 3. As shown the resonant frequencies ranged between about 17 and 90 liz. l IV. COMPARISON OF RESULTS f An inspection of the wire frame diagram of the impedence test indicates that it represents the essential parts of the damper, namely one plate and the vertical support with the actuator. Therefore, the results would give a true representation of.the behavior of the damper under seismic loading. O Figures 7 and 8 show the bending modes of the vertical support in Z direction . The principal resonances detected at 29 and 61 liz are torsional and in-phase bending of the support to . the spring. The ZPA frequency (Figures 17 & 18) is about 15 IIz where the resultant horizontal acceleration is l V.362+ ,4 2 .= .538g. From Reference 2 the vertical support was qualified for a horizontal load of 0.57Sg which is higher than l .
.538g with a ratio of 1.07 hence it is safe.
i
- Also from Figures 13, 14 & 15 the resonances of the vertical sup-l port in the cross axis direction perpindicular to the vent axis
! (X axis) are 19, 21 and 17 IIz respectively. As mentioned before i these frequencies are higher than the ZPA horizontal frequency of O 1s riz. Since in the ene1rsie the eugverte were destemed for higher g values, hence it is safe. It must be noted that these three 1
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Cafcs. For Calc. No. MAib-636 <//f SARGEUT hLUNDY LENtDN ECMS - Rev. 00 oate 06/01/a1 c*"c^oo Safety-Related Non-Safety-Related Page F5 of r ,7 9 Client Commonwealth Edison Company !Nepared by Date Project LaSalle County,. Units I & II Reviewed by Date
. NOTYA6B Proj. No.4266/4267/6093-00 Equip. N o. VR05YA&B Approved by Date modes (19, 21, 17) are essentially identical responses of the vertical support to its somewhat loose later ends. Figure 16 shows the 2nd bending mode curve of the support at 70 Hz > ZPA frequency of 15 H2,.
As for the valve plate -(leaf) Figures 9 through 12 show the bending modes which are an expected bahavior of a simple plate bending modes with irregular restraints. The lowest frequency is 38 Hz for the plate (Fig. 9) which is almost two times the ZPA frequency at the damper elevation. Since the plates were qualified statically for 1.5 times the peak loads, therefore the damper load 5.lg is considered safe enough to qualify the plates.
.V. CONSIDERATION OF HIGH FREQUENCY RESONANCE The ZPA frequency in the response spectra curves is about 15 Hz in the horizontal and 25 Hz in the vertical directions. The highest resonant frequency in the horizontal direction from the impedence tests is about 17 Hz. There was no resonant frequency detected in the vertical direction from these tests. Therefore, no special calculation was required for the high frequency resonances.
. VI. CONCLUSION 4 [ Comparison and discussion of the results indicate that the loads l tLken in the analysis as design basis confirm the fact that the j damper plate and vertical support have natural frequencies higher f than the ZPA frequencies specified in the latest response spectra. .l Therefore the qualification for this equipment is correct and i adequate. 'f'
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t Cales. For Calc. Mc. 5,Ub;Mj[y f SARGEiiT h LUfjDY nev. 0 0 e31,06/01/81 1enoineena_ co c^o Safety-Related Non-Safety-Related Page F6 of F f f r~g V Client Commonwealth Edison Company Prepared by Date Project LaSalle County, Units I.& II Reviewed by Date
~~-VKu4YA&u Proj. No.4266/4267/6093-00 Equip. No. VR05YA&ll Approved by Date VI. REFERENCES
- 1. Techno Corp. Report, Rev. 1 Dated 2/22/79 EMD File Nos.
020785, 011866.
- 2. NAMCO Controls Certificate of Seismic Qualification Test and Report No. F-C3879, Model EA750-20100.
- 3. ASCO Valve Dept. Engineering Report No. 91, Proj. 1357 Valve 831655.
- 4. Damper Hammer Test, Transitek Inc. Report. File No. EMD-029475 Dated 3/17/81.
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1 Cales. F or Reactor Duilding Icolation Cric. fjog4fb-oJp,d{(/_ j SAnCEijT$Lui!DY nampern n,,. o o E PJ CINtmit ti 0,,, oc/oyal_ ' C * * *C ^#* C# N $3If_ty-Retited ' flon-Safety-Retste:I Pse bM of F 4n - ' Client Cogmionwea l t b_Esl. iconn _ Company Prepared by S. Yassin Date Proicct I faS_al_1 e Cogn t_y.,. Uni ts I & II Hevimrd by Date t Ps 01. flo.4260/4267/6093-00Equin. flo. Appro.ed by Date 1 i TABLE 3 MODAL PARAMETERS OF Tite REACTOR hEllDItiG ISOLATI011 DN!PER 1 ? i DAMPING REF. RES. MODE _ LADEL FREQUEflCY 9Z- 10Z+ 1 I 1 28.996 , 0.05E l 10 61.329 0.04t 9Z- 10Z+
- 2 22Z- 22Z+ 3 3 90.396 0.058 22Z- 22Z+ '4 4 76.108 0.036 22Z- 22Z+ 5
! . 5 59.544 ' 0.051 i- 22Z- 22Z+ 2 6 38.316 0.079 , 3X- 3X- - 7 f 3 21.080 0.009 s . 3X- 3X- 6 ! 7 18.867 0.01 8 1 i 3X- 3X- B ! 9 16.841 0.012 3X- 3X- 9 i 10 70.228 0.019 I i l .. !O . 1 i l
v . . . Cates. For Main Reactor Core Cooling Cate. No. fmpgj gj-SAflGEilT k1.U JDY
, Rench_Ro_arJ3 Rev. 0 0 Date 06/01/81 C " 'C ^ " X Safety-Related Non-Safety-Related Page G1 of G 27 O Chent Commonwealth Edison Company Prepared by I. Elgindy Date Project LaSalle Count L Uni _ts I & II Reviewed by Date Proj. No.4266/4267/6093-00 Equip. No. Approved by Date ASSESSMENT OF VIBRATION CIIARACTERISTICS AND ANALYTICAL SEISMIC QUALIFICATION SIZE = 240' x 97' x 36' I OBJECTIVE To assess the vibration characteristics of above equipment determined analytically and by i:..gedence test, and to determine adequacy of equipment under the additional hydrodynamic loadings, particularly in regard with the high resonances determined by impedence test.
O I1 1NrnoouCr on In conducting this assessment, one must recognize the prac-tical limitations of available analytical and experimental tech-I niques. For example, the finite element method is limited when representing a structure by number of nodes, number of elements, nodal masses, nodal stiffnesses, idealized boundary conditions and by the type of functional relations between the nodes. On the other hand, experimental techniques such as impedence testing is also limited by the number of locations utilized in applying vibration inputs and in measuring vibration response. Other limitations include inaccessability to certain areas, coherence of signals, cross coupling b6 tween natural modes of equipment and i cross coupling with other natural modes of attached structures.
~
SARGEffT 51.UijDY C' " ' @ C^E4
- Rev. 0 0 Date 06/01/81_
ic runwe ena .
'*"C^"
Gafety-Refated Non-Safety-Helated Pne G2 of G 27
') Client Commonwealth Edison comoany Prepared by octe Project LaSalle Coun_ty; Units I & II Reviewed by Date Prof. No.4266/4 't 67/6093-00E quip. No. Approved by Date ,
f Therefore, assessment of the results obtained b3 both methods, has to consider these listed limitations and consequently has to be based on engineering judgement of obtained results.. III
SUMMARY
OF IMPEDENCE TEST RESULTS
. The equipment is represented by the wire diagram shown 6n Page 6.
The panel was shaken with a small weight attached to the hydraulic-actuator at two locations as shown on Page G8 The nominal force uti-lized is 1000 lbs. The panel response was measured each time at 50 locations in 86 directions. The resonant frequencies and damping were determined from analytical fits of test data. The determined natural frcTuen-cies are as follows: fn Hz Direction
- 17.02 x z 19.62 y 22.54 y 33.66 y 37.18 x y z 41.42 x y z 43.39 x z 45.32 x y z 54.10 x y z 55.25 x y z 64.12 x 70.5 x z Q 78.03 92.73 x
x z z
- Axes referenced here are those of finite element model
*E Cates: For Cafe.No chad,7p'jf S/A 1T 5 LUNDY Rev. 0 0 D t.06/01/81
. JeNGINEERS . .
C*"*^" Safety-Related Non-Safety-Related Pege G3 of G27 Client Commonwealth Edison Company Prepared by Date Project LaSalle-County, Units I & II Reviewed by Date Prol. No.4266/4267/6093'-00 Equip. No. Approved by Date IV
SUMMARY
OF ANALYTICAL RESULTS The reactor cooling core bench board has been represented by a detailed and rigorous mathematical model. The mathematical model consisted of 146 nodes, 174 beam elements of 35 dif ferent beam types and 112 plate elements. The distributed masses of the structure (beams and plate) are computed and distri-buted at all respective nodes. The concentrated masses of mounted instru-s ments and devices are calculated in detail for each of 112 supporting nodes A schematic representation of the board by finite elements is shown on page,G9. () Computed Natural Resonances of Main Bench Board
- Modal Participation Along Global Axes
- Natural Frequencies Hz X Y Z 14.16 -
.11 .01 .57 15.88 1.25 - .01 .07 21.02 .01 2.48 .00 30.05 1.06 - .01 .19 31.18 .02 .44 .03 32.97 .03 1.10 .01 l 34.64 .09 - .05 .02 36.38 .03 -
.04 .01 I
48.33 - .28 .02 .01 l 52.76 .02 .03 .05 56.81 .11 .09 .11 ! 57.58 .04 .08 .01
.10 - .05 .03 .(
58.19 59.62 .00 .02- .53 64.76 .85 .09 .07 i
- Global axes of Finite Element Model
i 1 Calcs. For Calc.No.fsp '03es1Sy SARGEfjThl.UilDY Rev. 00 oate 06/01/81 1 2ENQtNEEHS c mc ao Safety-Related Non-Safety-Refated Page G4 of G 27 Client Commonwealth Edison Company Prepared by Date
; Project LaSalle County, Units I & II Reviewed by Date.
Proi. No.4266/4267/6093-00Equis. N o. Approved by Date ) j IV FREQUENCIES IN AGREEMENT ANALYTICAL EXPERIMENTAL l 15.66 17.02~ l 21.02' 22.54 , i 32.97 33.66
. 36.88 37.18 i 48.33 45.79 i 1 52.76 54.10 56.81 55.25 64.76 64.12 V EFFECT OF RESONANT FREQUENCIES WHICH ARE NOT DETERMINED EXPERIMENTALLY l
It is advantageous that more natural frequencies are determined i analytically than by testing, since the dynanic stresses in the final Qualification Report are based on analytically determined resonants and their node participation factors. I In this case of the bench board there are three frequencies that i l fall ih this category, below ZPA level of 33 Hz. These are 14.16 Hz, i ! 30.05 Hz and 31.18 Hz. I ! If these natural frequencies do exist, they are already included ! in the stress computation. If they do not exist, this could be an added conservative element in the seismic qualification. Investi-l gation of transfer functions obtained in impedence test report show i i ! that there is no peak of'g level at 14.16 Hz, at 30.05 and 31.18 Hz ! there are high levels in some transfer functions and very few peaks t O in some others, see vases c17,01ao19) . The conc 1usion is thee - l inclusion of 14.16 Hz as a natural fregtency in the Finite Element v-- +- -,mu-.e-+, -,-..y- ,,w-. _ . . , , . , , . ,,.e -
,- .,,.c,-r4-3~,. , , , , . .,.--,...,v.m. .w,,. .e ,.*,,,,mw,e-,_.p.-.v_,.,-,.,,-- _ e.,,,c- - ,,.,,-enw -e
t Ca!cs. For Cafe. No.M?fh10 @ j7 SARGEf1TM.Ufl0Y
; ieNQWErnM -
~~ Rev. 0 0 Date 06/0]/81 C"C^"
L Safety-Related N ,n-Safety-Related Page G5 of G 27 l O (J Client Commonwealth Edison _C_o__mpany Psepared by Drie Project LaSalle County, Units I & II Reviewed by Date j Prol. No.4266/4267/6093-00 Equip. No. Approved by Date 1 analysis is considered an added conservation, and the inclusion.of 30.05 Hz and 31.18 Hz is considered an added accuracy of the analy-
- tical analysis over the experimental analysis.
l VI EFFECT OF RESONANT FREQUENCIES DETERMINED EXPERIMENTALLY AND NOT INCLUDED IN ANALYTICAL RESULTS
- 1) Itesonants Below ZPA Level This is generally a cause of concern especially to the seismic I
stresses calculated. analytically, however, in this equipment only ! one frequency of 19.34 falls in this dategory. 4 The investigation of transfer functions indicates that there i
.is only one peak of the g level curve at this frequency, page .
i This transfer function resulted from the test when the shaker I (weight 122 lbs) was attached to the side of the board and input i vibration was directed along + X direction at node 27 and the response was measured along - X direction at the same node. The effect of adding the mass of the shaker at this location would be a lowering of the actual frequencies i.e.. The actual frequency of 21.02 which was confirmed both analytically and experimentally was temporarily ' lowered to a level of 19.34 Hz. Therefore, we con-clude that this frequency is not an added mode which was not picked l up by the analytical analysis but rather an artificially lowering of an existing mode of vibration. It must be added, however, that the l Q g level at this frequency in this direction (horizontal) lie in the ! ZPA range if .42 g's, hence contribution of this mode is not signi- . ficant. I l
Celes. For Calc. No. E4QWcdL SARGEfjTh l.UiJDY 1 n,,, o o o,,e os/ oval reNmNEERS . C " "O ^C' Safety-Reisted Non-Safety-Related Pege GG of G 27 Client Commonwealth Edison Company Prepared by Date Project LaSalle County, Units I & II Revised by Date Proj. No.4266/4267/6093-00 Equip. No. Approved by Date
- 2) Resonants Above ZPA Level There are three natural frequencies which fall into this cate- I gory. These are 70.5 IIz, 78. 03 IIz and 92.73 IIz. Since these fre-
- quencies are higher than the ZPA level, there will be no added seismic loads on the board structure due to these frequencies.
Therefore, the qualification of this equipment which is based on con-l sidering the analytical frequencies alone are still valid. VII CONCLUSIONS Based on the fact that the analysis considered the additional hydrodynamic loads, and based on above assessment of ana- !O
- lytical and experimental vibration clharacteristics, it is concluded that the analytical result has been verified by the impedence. test i and that the qualification of above equipment is based on sound l and verifiable technique.
It is also concluded that extending the qualification of this 4 b6ard (llil3-P 6 01) to qualify the two boards [11Il3-P602 and IIll3-P603] ! which are sim lar in structure and contain less and lighter equipment l is therefore adequate. The adequacy of this extended qualification is based on the following reasoning. Since the structures of the two other boards are simular to that of 11I13-P601 board, and the masses of mounted instruments / devices are lower the natural frequencies of 1 l the two boards will be higher in magnitude and the seismic stresses O *11 de wer-1 i
Cates. For Cric.No. T,3 1. OJ ,y j g SARGEifi t LUf1DY n,, O o n,,,ocfo17e1 9 LN Q1N1!" Ante - C ' "C ^ *
.s Eafety-Related N3n-Safety--nefated race G7 of G 27 CHent Conunonwea1th Ed3 son Company Prepared by Date Project LaSalle County, Units I & II Revimed by Date Proi. No.4266/4267/6093-00 Equip. flo. Approved by Datt VIII REFERENCES
- 1) Seismic qualification of reactor core cooling bench board
#1H13-P601, EMD-028690. Ot. .
- 2) Impedence test report for main control bench board
#H13-P601. EMD File #029472 Dated 3/17/81.
- 3) Final test report SQRT in plant impedence testing, LaSalle Co. 1, Transitek, Inc. Job No. 80042, EMD-029601-00.
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