ML20203H071

Rev 0 to Calculation C-295-7.09, 4.16KV Switchgear Seismic Fragility

ML20203H071
Person / Time
Site:	San Onofre
Issue date:	01/22/1995
From:	Hadiditamjed, Nakaki D SOUTHERN CALIFORNIA EDISON CO.
To:
Shared Package
ML19317C819	List: ML20203G879 ML20203G901 ML20203G917 ML20203G931 ML20203G951 ML20203G976 ML20203H026 ML20203H044 ML20203H071
References
C-295-7.09, C-295-7.09-R, C-295-7.09-R00, NUDOCS 9712180296
Download: ML20203H071 (40)

Text

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f CALCULATION CROSS.INDEX ,cc,,. PflEUIS.CCN 900t. PAGE _ _ OF CC3s CosevUtssoot. 2 cCn no. CCN-I C-2 76 -7 # T seie.t m. Calculation m. IDIPUTS OUTPUTS Ik" " case r=v. u% emiber W These inserta+g +d= eons and Ax nesusts and conesumons or m e c8* %w% 6 NN@D"M cafestamon are used in rese :.L-9 h M DC*t-supervisor . - % and af revned mey ree*e e e oocum,n,, m ~, e ireals and revissorid N subsect cakxiancn e? date Caict Document W. Rev. No. Calcf Document No. Rev. Me. YES/NO E g c-ns 4 08 o R,AzT-O So23-3aZ-2 -//2 g 4Z2A5 SoZ.5 -302 2 -410 I C-21S-717 o g_ see w e u v.se, F h

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TABLE OF CONTENTS Sheet 1.0 Purpose 4 2.0 Results/ Conclusions 4 4 3.0 Assumptions 4 4.0 Design inputs 5 5.0 Methodology 5 6.0 References 6 7.0 Nomenclature 6 8.0 Computations 8-i+ Appendix 1: Excerpts from Ref. 3 (4 pa0es) Appendix ll: Excerpts from Ref.1 (5 pages) Appendix lil: Excerpts from Ref. 4 (3 pages) Aret.stm "N. hm h w u m.:. (tA-P e, g u ) % S l% i)5 eec e..... ..../.. C:\\ songs \\s wor 4v.doo

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i Subject Sosl&G 2 h) IPt'EF ! J'IG ILV StrIITtHCML sse,,na, 4 RW Oms 0N410ft DATE mE Daft i RW 0h40184AT081 D ATE mE CAff M Aw fedi@ /?///ff PH II/B/4q h b b 1.0 PURPOSE The purpose of this calculation is to estimate the selsmic fragility for the SONGS Units 2 and 3 4.16KV Switchgear in support of the IPEEE program. e.u.au uts tv =w n s.> w A c e s.uou

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g t.m saiu Tag No,'s 521804ESA04 and S21804ESA06 i 2.0 RESULTS/ CONCLUSIONS The seismic fragility of the 4.16KV Switchgear was estimated to be: rwcDMAt-FtA$tufy e 1R Vt TVAM-Fot%ItI!y Sa " k , a 15 Sp > f o p k"## pg,pu,NCL.PF hr CJ W CC k y 10 p SU " o pg, SIEE i HCLPF = 2 s/[ hu % w., u A's v ue..v uw iu A *v t w >.. g g,3 3.0 ASSUMPTIONS The following assumptions are made in estimating the fragility of the 4.16KV Switchgear:

1. The functional fragility of the switchgear is assumed to correspond to function during the earthquake, without the consideration of device specific relay chatter.

2. The functional fragility is assumed to be adequately estimated from the tested levels in the qualification tests since no anomolles were observed during the test.

The c.ualification report (Ref. 3) is used as the basis for the fragility evaluation.

3. The horizontal response of the switchgear is assumed to govern its capacity, because the switchgear is relatively stiffer in the vertical direction.

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NES&L DEPARTMENT CALCULATION SHEET cm comsison: Project or DCPMMP Ceic No. C* 216-7 09 ceu no CCN - suy.et 6045 .1 b 3 /PEEE : d d' kV E d87CHG fd#- shen No. 6 nev onomion cats me cair my cmemton ears as ears g [0\\ A'm AM47 IJ/l/M PM I8b4 / f v 4.0 DESIGN INPUTS i Seismic qualification Infortnation as shown in References 3 and 4. 5.0 METHODOLOGY The methodology described in Reference 2 for estimating the fragility of components qualified by test is adopted here to estimate the fragility of the 4.16KV :;witchgear. The test response spectrum is compred to the required demand response spectrum and other factors are included to account for various conservatisms and uncons6rvatisms and the corresponding variabilities. The procedure is as follows: A Sa = (TRS /RRS )(F )(FRS)(SaREF) C C D where TRSC = TRS

• C ' C T

RRSC = RRS ' CC'DR The above factors are defined in Reference 2. Median values and logarithmic standard deviations are also provided in Reference 2. Definition of the above factors are also provided in Section 7. The factors C, C, C, Og, and Fo are obtained from Reference 2. The test T C response spectrum, TRS,is obttined from Reference 3. The required response spectrum, RRS, and the structure response factor, FRS, are obtained from the probabilistic response analysis of the Control area of the Auxiliasy Building (Ref.1). ses so4:e =sm e/se g CAsongs\\swgr4v. doc

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• /6/'if b lhe ratio TRS /RRS i

C s evaluated at both the peak frequency of the floor spectrum C (but not less than 4 Hz) and at the ZPA. The fragility is based on the controlling frequency. In eddition, the anchorage of the component is evaluated to ensure it has sufficient strength not to b3 the controlling element in the fra0 ity evaluation. il

8.0 REFERENCES

1. " SONGS 2 & 3 IPEEE:Probabillst'c Selsmic Response Analyses of Selected Category I Structures," Dreft, Prepared for SCE by EOE Engineering Consultants, Nov.,-1994 Jsut mL VL N5h5 2. Reed, J.W. and Kennedy, R.P., " Methodology for Developing Seismic Fragilities," EPRI Tli 103959, June,1994. 3. SCE Seismic Qualification Report No S023 302 2112," Seismic Certification Report for Clar,s 1E Electrical Equipment ITE S.O. 703 50395)," Rev. 2, 11/12/82. 4. SCE Report No. S023 302 2 490, Rev.1,1/22/85. A 48 ll CAsenge\\swerev.doo

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• 2.86g at the 2'SSE level.

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Sp ctrua Reforcnce S urco Proprietary Test Report SEISHIC CERTIFICATION P.EPORT 1-T-E S.O. No. 703-50395 No. 42686-2, Pages 141 6 144 Page 65 of 67 Oy.y C-W-7:0[ APPol..T,.SHT T.3 Figure. 3 100 4 %..m+ 4 + i - ~ . +.a e,u n... #....e.. #.i, #, #--,* 4 w * # w, w m 4 0,..+%, s-80- + * *' * ". + * ~ + * -"4 - 'i .g 3 .t N+ +s4.If SPECTRUM DESCRIPTION [ 60- "44 rHi E +, + + +H+ Ht H- ........'.y. M.e0 Ne f.. i ! ! WEl EiH E Motion Input Side-to-Side / Vertical a + K E' ~i N -p~ gsa gj Solid Curvo

Horizontal RRS (SSE)

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a. . J.. q. i _ cmc. 4 ' C-2 45-7.oy j APMM. Z W I'4 c l Spectrum Reference Source SEISMIC CERTIFICATION REPOR1 ' Proprietary Test Report ,_I-T-E S.O. No.703-50195 No. 42686-2,-- Pages 112: & 113 - Page:64 of 67 ? ._.E Figure 2 .i

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NES&L DEPARTMENT CALCULATION SHEET o, CCN CONVERSION: Project or DC P/MMP Calc No. 6-2 76-7'Of ecN No. CCN.. Subject SONGS 4 h 3 J P&CT, t 4elG kV S*IITCdGUM. Sheet No. ' I'/ pry oncisaton DATE ins oATE nty osciwATom DATE - IRE DATE g a & Jya /WM ohH 'V$/t1 i hO .a a4 A 101.1.,1C... EncePT) Ft.M.92 I .. (S P. M..CS. o. An

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k k AUXILIARY BUILDING: Basemat to El. 63.5' Median Horizontal Spectra, 2xSSE Level

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NES&L DEPARTMENT CALCULATION SHEET PAFttu CCN 90 PACE or CCN CONVE.RSON: Pto}ect or DCPMMP Calc No. C 'MS ~ 7* 0 9 cen no. CCN-Sublect 50*10S Ah5 /PECE % +lG V\\/ 5*A O W Sheet No. S'l nry onomaton o4TE me cars nry oncwAton cars ms i oATE g e she pW,Vir Wl/W VV+\\ 9e(M .l .m E ) a._.-,..... .I l + ...e.. .... -.. ~... .n..... /IPPEttDI1.. K. _. . flif,fPIS.. Ff.e. t1..$$f.'. 4 3. i l t wa se.m.e s .f.. Q r==e a m m.

i... BBC Brown Beveri C" " C^" * "I ^"c" AND SEISMIC CERTIFICATIN DOCUMENT 10. 33-04245-SSA . SWITCHGEAR PRODUCTS DIVISION-E*8' I4 *I IT ax. # C-295-7 0 9, AffM BC, sett jg 2 TV!rt te,rwett Page No. SS Report teo. 43230-1 ruLL SCALE nANsuissistLITY o.1 0 1.0 0 to 0 100B 10000 nicu sc T t e __ i-2 w-,-- a,. m a:- Y~ + g =

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++ i ~ e t ey n. 9 a p + s e. 2' r = =c_- n- ____ u' M I I 1 >1 m I t r I ' ti > > i 1 -M:i: du es;: 4g --n=. - :E=s.~4-55 m-agy =r. 4 = u = =._ l I i !;;i 1 g se .og' ....4 g i a e. ..,.en Frequency (Mt) Axzs SSN Accrt. wo.f,t!, _4. wo.EfA TEST R:N No. I C. 363.J. VQ6 h '- This is the property of BBC Brown Boveri, Inc. ud contains proprietary and confidential information which must not be duplicated or disclosed other than as expressly authorized by BBC Brown Boveri, Inc. l9 .._. a..

BBC Brswn Bsveri cmTIFICATE OF CINPI.IANC'E Ano seism c c mririctrico DOCOMENT 10. 33-04245-SSA SWITCHGEAR PRODUCTS DIVISION

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C MC. 4 C-217-7 of MPEtl. E, Stf7~.22C.3 i ttger tteocal tage Sin. 4*J Aepeat ko. 4325C 1 TULL SCALE TRANSMISSIBILITY o.10 1.0 0 to 0 100E loueu riccnt u t s q 4 ~'- -- _ mmc _- -2== ?*,_. __. g d l , z i _2 ,i 9 Y' e 3 0 S. P -- - 9 e a e ,p _g'

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EC&FS DEPARTMENT CCN NOJ CALCULATION SHEET rnEuu. CCN NO. PAGE _ OF _ CCN COWERSON: CCN NO. CCN - Project or DCP/FCN Calc No. L.

1. 9 %

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Subject _ te o 1., t t *s r a tu. + a s_v L3,,._ u u uu Sheet E-1 of arv ca1&rmaion DATE Iti DATE RIY ORIGIRATDW MT E ikt DATE o %. %w '/* t,. /Mwcx (d, M gg 4 APPENDIX IV Relay Fragilities for 4.16kV Switchgear i I l ces see en o a twnve somxxnnui

I* EC&FS DEPARTMENT ICCN NO/ CALCULATION SHEET encuu. ecN No. exoe ____ or _ CCN Cot #ERSION: l CCN No. CCN - Project or DCP/FCN Calo No.

c. uc.,.e, Subject twu t a s reut * + w Lv Ln - t. u t. t,. s.

SheetW - Lof RIY OtitIRATOR Mi[ IRE MTl i REV ORI&IhATOR MTE Ikl MTE at t 's.. a ht /)Nr.mm HM 4 PURPOSE The purpose of this appendix is to develop fragility values for the relays in this cabinet. These fragilities will be used in the IPEEE Seismic Probabilistic Risk Assessment (PRA). PGA is expressed as average spectral acceleration over the 1 to 10 Hz range and is 1.43g at the SSE level and 2.86g at the 2XSSE level (Ref. 4). N% iv vis t u 4. ei_.c~ o to ou tu cm m - g m - i c,, w w.ig, METHODOLOGY gem sn nr The methods and table values provided in EPRI TR-103959 [Ref.1) are used to develop the relay fragility values based on testing. Relay fragilities are calculated for the 4 - 16 Hz frequency range which is considered most susceptible to relay chatter. The " controlling" frequency is that at which the ratio of TRS to RRS, e is the smallest. RRS, takes into consideration the cabinet's amplification factor. GERS data from Ref. 2 may be used as the TRS for the relays when device test data is not available. The vertical direction generally does not govern for relay chatte. because of the relay orientation inside the cabinet. Based on a review of the construction of the relays, the relay contacts are configured to operate along the horizontal axes. Also, the horizontal accelerations are typically greater than the vertical. REFERENCES 1. EPRI TR-103959, June 1994, " Methodology for Developing Seismic Fragilities." 2. EPRI NP 7147-SL, August 1991, " Seismic Ruggedness of Relays." 3. C-281-2, Rev. O, " Required Response Spectra fcr the Seismic Qualificatinn of Equipment." 4. SONGS 2 & 3 IPEEE Report: Probabilistic Seismic Response Analyses of Selected Category I Structures,-BRAFTHovember-1994 h ms 9eu a n z I v:. SCE 264N REV O &se (AEFERENCE 90tnX11V415)

l I* l EC&FS DEPARTMENT CCN NOJ CALCULATION SHEET PREUM, CCN NO. PAGE _ OF _ CCN CotNERSION: i CCN NO. CCN. l Project or DCP/FCN Calc No. <- - L W t o s Subject 6 %I L' 1 Teyr

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e 3 t. c# %,,, %,v.9n awl g I + REFERENCES (cor.tinued) 5.- S023-508-7-4-13, Rev. O, Wyle Test Report TPQ-TR-91-28, Third Party Qualification Report on Phase I & II Testing of Amerace Agastat Timing Relays Catalog Number 7032 PDC for use in Nuclear Power Generating Stations, December 19, 1991. es-m o - nmecs sou>xmiu

EC&FS DEPARTMENT iCCN No/ CALCULATION SHEET encuu. ecN No. exos _. or CCN CONVERSION: CCN No. CCN - Project or DCP/FCN Calc No. (- - L W

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Sheet r. of i arv anisinton mir tar mir g arv amistuvon mit tar att '! % &wn v V ni 0 % t. v 4 NOMENCLATURE PGA Peak Ground Acceleration TRS Test Response Spectra RRS Required Response Spectra ZPA Zero Period Acceleration HCA Horizontal Control Accelerometer AF Amplification Factor FB Front-to-Back SS Side-to-Side i SSE Safe Shutdown Earthquake, equivalent to 0.679 PGA for the probabilistic response analysis (Ref. 4] GERS GenerE: Equipment Ruggedness Spectra Additional terms are defined in the EPRI Methodology, Reference-1. Cct 54ae ntV 0 at4 [PEFENNCE. SO1300V 7.1S}

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