ML18127B143

Forwards Seismic Analysis of Containment Fan Cooler Units

ML18127B143
Person / Time
Site:	Saint Lucie
Issue date:	08/30/1976
From:	Robert E. Uhrig Florida Power & Light Co
To:	Ziemann D Office of Nuclear Reactor Regulation
References
Download: ML18127B143 (26)

Text

NRC FORM 196 U .S. NUCLEAR REGULATORV COMMI~ DOCKET NIJM QE R I2-78) 50-335 FILE NUMBER NRC DISTRIBuTION LLDR PART 50 DOCKET MATERIAL TO; ~ ~ ZIEMANN FROM: FLORDIA PWR & LIGHT CO. DATE OF DOCUMENT R.E. UHRIG 10-30-76 MIAMI, FLORDIA DATE RECEIVED 10-29-76 QLETTER CINOTORJZEO PROP INPUT FORM NUMBER OF COPIES RECEIVED SORIGINAL SUNCLASSIFIED C3COPV DESCRIPTION ENCLOSURE TR. RE. THEIR 6-30-76 LTR...,..TRANS THE FOLLOWI G SEISMIC ANALYSIS OF CON'fAINMENT FAN COOLER, UNITS ~ ~ ~ ~ ~ ~ ~

( 1 SIGNED CY. RECEIVED)

( 21 PAGES)

ACKNO~@Z)g@D i PLANT NAME: ST. LUCIE // 1 SAFETY FOR ACTION/INFORMATION B 11-3-76 ASSIGNED AD: ASSTI:fJED AD.

BRANCH CHIEF:

PROJECT >fANAGER: PRO NA ~

LIC ~ ASST DIGGS INTERNAL OISTRI BUTION 8 FIL SYSTEMS SAFETY SITE A NRC PDR HEINEMAN ENV 0 N I & E 2 SCHROEDER BENAROYA OELD GOSSICK & STAFF ENGINEERING, IPPOLITO MIPC MACCARRY KRKW 0 CASE KNIGHT HANAUER SIHWEIL OPERAT N REACTO S E PAWLICKI PROJECT MANA EhIEN REACTOR SAFEffY OPERA N BOYD ROSS EISENH P COLLINS NOVAK SHAO HOUSTON ROSZTOCZY BAER PETERSON CHECK BUTLER MELTZ R MES ifELTEMES, AT&I SKOVHOLT SALTZMAN RUTBI'.RG EXTFRNn I OISTnIBUTION CONTROL NUMBER LPDR: FT. PIERCE NAT LAB: BROOKffA TIC: REGS VIE ULRIKSON ORNL BASIC. LA PDR CONSULTANTS 10903 ASL~B' TO ACRS CAT NRC FORM 108 {2 78)

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POWER & LIGHT COMPANY 6'LORIDA 1I 5eclhe OeeEe> Clek August 30, 1976 L-,76-31 Office of Nuclear Reactor Regulation

'ttn: Dennis L. Ziemann, Chief Operating Reactors Branch N2 <@g qg6 Division of Operating Reactors U. S. Nuclear Regulatory Commission I Washington, D. C. 20555

Dear Mr. niemann:

ill~~

Re: St. Lucie Unit No. 1 (Docket No. 50-335)

Seismic Anal sis of Containment Fan Cooler Units Enclosed herewith is the document entitled "Seismic Analysis Report of the St. Lucie Unit 1 Fan Coolers." This document supplies information regarding the analytical techniques which were employed in the seismic analysis of the contain-ment fan cooler units at St. Lucie Unit No. l.

We are submitting this information in accordance with our commitment made in my letter of June 30, 1976 (L-76-243) and referred to in the Staff's Safety Analysis supporting Amend-ment No. 6 to the St. Lucie Unit 1 Operating License.

Very truly yours, Robert E. Uhrig Vice President.

REU/NR/hlc Attachment cc: Norman C. Moseley, Region XX Jack R. Newman, Esq.

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'tructure) 7pchiill0gg V~esgknghovse Efactetc Ca~ot'ation August t976

BURE Phfif ScJlcl!8ttc RGpwst".AtoHQA Qf tJ'l8 Pari General .AssemMy Rom Response Sp~ctra far Yarhjcal 0]F&C'L'~Pl ggE ~yg 0 s~g GB1Ap'Ing Floor Response Spot;%ra'or Ye&fcal Qfrect;]0@> @BE and 1C Damping f>abr Response Speci.re for Horizontal 9<rNt]en> QBK md 1'j Dlorp1ng " Kiev. 60

- 'F)4~0<'e~pons"., Speccwa f'r HoHzvntel UfmeMon68K e>~d 0 6% Damping - Kiev. 60

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s4CTION 7 IHTPONlCT I 08

'"44's'fs w@s perfo~4 40 Mcl"~fg Cl~ strgcfUM) )n(Gql"ltd 404 opcNbtl)cg Of'he St, Lucre - Unft 7 reactor conta$ nment fan cao'los+> w~hen sub$ er.'t~A to se<sv$ cI lo<<ds It was found fry~ the sefsm/c en@)ys$ s that the reactor centa<nm nt fan coo)qrs conform ta the St,. huc3s - Unky 1 seiom<r, cr$ ter$ e~

Prllented fn AM@ docvr@nt we the results fv0c the se38mtc analysts 4eranstvatfng th0 89fSmfc structumT adaqMCCy And op raMlfty 0f'he St. l,vCfe-Unht 7 f<n eQOTers Also, given <0 0 df cussfan Of ghe anelytfza.'l m.thods avyToged~ e deseetpC>ori: 0f the Input used, and e dhsevfpHon Of the fan cogent s4a~etuVek System.

T"< 9enere> ess@ublh'"<9 >SchePQt'fc O'Ag,) ct)n )g4

~ of'n 085eRL)]y, tM&f.or base, end heat exchenget's'senbly, The miami )s mounted on top of motor heat o

exchanger as,squab'fy sh$ r;h 3s baal ted td fan assembly, The eo!np'l~>te e~sembly' fs welded to the f'IMl'auAdeUon, The spacff/e, deaf;a<l< a("0 dian>ssed bolos,,

the fan assemb'lg qqnsksts of vAt0v 85aeab)y, hous)ng aa~emblv, beyHng base~,

inlet, spherical roHGr bee~tngs, Anl inlet flange ruing, Housfn<} ~s,se(ably $ '

mode ot <..)der steel plates <nd cona<ets of s)de sheets end scroll. 'fbi r'otor consists of cent>'<fogy> h3H'oH'bladed aha l assembly and the shaft, The wheel ossamh7y fs presseL an the EeP.end $ s also retained on the shaf't by'oto 3(4-30 sof', eeeewsi The tphet'Ical reklev beer fngs ere taunted orL V>e rotor assembly and bolted t0 the tearfng heae eseer4)y', The rotor ass,ebb'ly )s connected to the motor N$ th a fkexfbke coVpHhg<< Th heaving base fs febrfcated using u.lAd steel eonFereegerr. The Inlet $ s a$ etl ee'fded'teel construct'ion and ts used to gvjde ale $ Ate the >Week 6'ssek$ y, The vota> hose <s.ot a3) m7del eoostmeHon and CGNpor@onted so tb0t hat air 4 b<0<v over. the heat exchanger end rater'n~d to cool i'alar t~hfch

r~&ntfng Aa;aa $ ns<<4 the rotor bess.

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RECTA)H 8 N8f YTkCAL >KtH99$ AND CRklEArA A<<4e>et'<6e" ~n the praviovS serMon, they@ fs na $ ntaract$ w between the f'eA end @~toe stows of the fan can>ei" stt"vctut~ bee>Use each vector has ibS Ows fkxad Haring and'I@ sh4fts ata coaaectef through c> flex/hie ccupNne, Based oq.Ches feel, Ch. fan end motor M~r~ 'indqpendeqQy snblyped bdaAngs fox the &eetot'on&$ wenc f46 cool'm @am Used to 6etenv$ ne 44>. genera) assmBy, NL "nylons,, and p~cperQes 0& eeepwents.

)fan fthm@ StVQQCVLO Wit 4@49)64 48 Sph'fng N5SC SgstPAS and the Ahtgr'g fr6$ 0&n~."fag wve ee~vte4 td deb."nafne who behavior Qf the ep".,:ponents duHng seismic QxC]tent'fGFt. Ac c~k@fnC4 3A 880ttcn 4, t4 Qcpktftc@t'(on 1~'.v&1,$ 5F6 46tel'O'In&d based on, <he fleer wsp~se spectra, $ t ups deII;.,nntged that thG fwquqnc/qs essuehate4 trkt4 the f~<<vrator system knrlu@ng eel'fs and ~;oft banks have f ., .. -.$ pjw .* ~qff,.<<-

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~ewi.'. inat~en. e0 ey~sat<ng 'toads, h0~<sdntal se/size (ME], i(er t)ca7 eyfsmte (DBF), end acc<4mC pressure> (ee$ $ s and eye't bw>klan, L'tN'fC v4ttkss U$ 54 4 p8 fA. occgt46ncQ @th ttM 8148ttr. pr0vfgfcns fn P4r't, 7 (fan F00'lm et~tu~eE Ce.-~oheatj)ALSO-69 and ONE Sec. AU, Pmssvt'e vessels Spacif)eetions (ee)) tuba and If'stertor't), No anely+3s was nde f'r tt>e G8E sing fC v~s shme 4f@>t the DBE airless 'levels, are althing> 0N clast/e,

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Ll 4 SKY ION INPUT DESCPIPTIOg Yhc sef$ r fc dcsfgo va'tush used fn th< c~lrglgtfang parL~ Dbthtjt~id /tarn 'thy' lac~ respon"e spectre foc1vded Tn the EWSCp sparest'<r.at<a>> cant:1g)geng An coofedS Koi FLO-8770,$ 76, datpd !4y 2g, lyy1, Sqqgfan 18 fn ~f9QM> ~ EQ ~ kffe th0 f700p rqgpgnr~g spectra gyp Ogp Figures. g

~rtd 3 6~'@ vert"tc".I f)GQl" Atspgn86 Kpectl"8 tor 0.5/, gqd 'lh gqgqpg~gg dygp)ng

<<I<<~>> t."~<p<<t'<<>4" ~~gums 4 and ~ ~~a haH~aot~1 <tool response spectra fOr Q,QX and lg equfpgng g~mpfgg velum, resp4gtf~<p'tg~ at reuetar bug1gftyg elevstfon 69. F)gushes 6 en6 7 eve hmfzon41 floov i.a<ponce spal;tr0 foe 0'.5l and 7A equfpneog d~fttg vhtu85> Yespectfvely, at meeter" bgtldfng .

01evat.ion 44, Ae shaw in FigvNg 4 4o 7> the msponsa speetN$ pebks are at and above Q.M scoop peafowl, 4ese thon or l.'gus tc 9.06 second par)ad Q3l:h 4t:tvdes

.a)1 nr.,Cut'e1 f~equacctas ca'tculatad for th(a essetk'fy,. the re;pansy ~ppotpa1, velr~e.. 0="vc converged to tt% fIMt acca7eraf.!on Va'toes, Consequently, th.,

'gseqgAy zan be eons$ dared es sighed tee Ch. floor mspans~ spectra shee fn Figures 8 to 7. Bomvav> for the purpose af conse~ett8m,. staffs acct)Lretkon~

of 0,6g and 0.4g for horteon541 And Vertfcal dfrectkonsvespeztfvely,.have been t".boson as the 08K kopvt ta the e+~sembly.

To o6Mcn the acxfiwm hypathetfcx1 ea<hquake (09E) values, the Nb0ve values ware tt;uktfpHed by 8, The foHaÃng 08K ar;celerztfon values t et"e vs@:

VEHTImL SEIS~ri HQRIMllTAL SE SNIC Oev. 44'lav

. 't. Rg M',2g The yartJea3~nd haHzont~1 ee$ @tfq Iood: vita applied.s<eAteneously to'aIIa~

f'Ot the worst pqss.)ge ~ongtfons, In audit;fan, the eo)hs mm sub)ected to a dfffaientihl presume of 2 pet to t-epr'est.nt the bIoefwA tvansfent pyeshvre d!4fer'ence.

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SECTION 9 0

~BEAU TS The fan'motor syst6N spl"fAg coo Canis and nafurg1 feequewieg ~i e cafculatod, A ShCÃt )n Tab'te 't, F11 enturo1 frequene.les are hbov~ .

80 Hz ftlcIQ'tng C4~~ Y'Cfbl" assBNbfg Nh'feb $ 8 24.6 Hg. Th95A fi"e<>u~nc<es are at end @&~vs the r)0/d range of the floor reepon~e spectra, (Ffgu&t, 3 tb 'F), f,e>> the fleer response spa<'.f;I"0 t,'converge Co She coARCBAt response value$ Qtth Le'ro ntap73fkatfon Ot and above. 20 Hz (qr Q,05 haec.),

Hecaus 6'f', neural f'~v>nc)es are tn the rept'an of zero nmpIlfkatfan the fan 600m'os(em [As 8Mfyzed using se'i$ ~~)c equfvaleot 854t~c loads.

840"fn ffl TGNQ R8 C4 c43cu1QC@f 5fld 73NIC betlav'Iov'1DAg (f/Ch of .sCvi~tlgth fov (fffferenf,'tNde$ i 086 setsmtc toads tR;r'e used to, thF'0ig'trl catty'tete the values 6 'faMe P., $ $ nce the clast/c Iieet<~ a~roe/send wk4h 0R 08K CvcftC 'NRM FIGC oxc&Ade0 ckeo DBE s6fsNfL favell MM usod, ft, $g t'ibt. necesggqr t@ p@pfeN an 08K grprsW<e analysts.

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