ML20235F855

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Rev 2 to M-38, Siderail Extension Study
ML20235F855
Person / Time
Site: Comanche Peak Luminant icon.png
Issue date: 07/27/1987
From:
ABB IMPELL CORP. (FORMERLY IMPELL CORP.)
To:
Shared Package
ML20235F613 List:
References
M-39, M-39-R02, M-39-R2, NUDOCS 8709290346
Download: ML20235F855 (54)


Text

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PAGE 1 0F ll i.) FEB.2 0 ' CcMANC:-!E PEAX SEM ELECTRIC STm0N DESIGN Cd.ANGE AUTHORIZATION ht. 5Ch EE INCORPORATE IN CESIGN 00CL"'ENTOCA NO. 6.814 REV.6.

1. SAFETY RE dTE 00C2 ENT: XX YE5 NO RECEIVED
2. CRIGINATOR: CPPE X X CRIGINAL DESIGNER ug t g jgg6
3. DESCRIPTION: .

ADVANCFD .. KNGlNEERlW3 A. APPLICAELI4FE2/0WGJ00Cygg 2 3 2 3- E l -1701 pivigg, 10

8. DETAILS THIS REVISION VOIDS AND SUPERSEDES DCA #6,814 REV.5. .

When approved by Engineer, siderails can be added to trays per Details shown on the attached sheets.  ! REV. 5: Adds Note #5 on Pace 2. As noted on' Pace 3. 4 and 8. Adds pa ce 10.

                                                                                                                                                                                                                                     .. .REca:WD REV. 6-            Adds Sheet 11 1                                                                                                                                                         n.o ..

mm u is56 g'. ., FUA ONE b$ ,,u 35-1195 GIds7Js

. INGINiilNG Ubt Unu . R ECEIV ED " " "

Mnp Or. N84 1

                                    .         ,                                                                                                                                                                  UVLuidc.id. CU$ U$CI
4. SUFCORTING 00 CEMENTATION: .-

GTN.44162: DCA #4.178 Rev ,20.

5. AFPROVAL SIGMATURE5: MDJ/j1j 2-17-84 mb A. cRIgIs,tTcR: cATE E -/ 7 -8(/
8. DESIGN ila.rx:.:s.ifATIVE: / b %1t'4 CA E ? - l 7- 8 fC C. CE3!G3 Ar/IG FRICR TO IIII E: /kN MY CATE 3 M
6. 7GCCR RELATID CMAnGE rr NO YE3: P.O. tubs
7. S~ANCARD CIS RIEUTTCN:

ARMS (ORIGIMAL) (1) Mark Welch QA (1) CUALITT DGINEG ING (1 EE (1) *

 .)- .

DCTG FCR CRIG. CE31GN (1}1 8.ob M.D. Jones Joyce EE {1 C " 9-83 W eS4in oug (f) 3 C. nzatti

                                                                                                                                             .AITA M                                                         l/               1-      ,,
                       . . . . .                        . . . .                                    .-                                   .. .. CMC..No.                                               M*M     -

r

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p *' 1 . OCA #6,314 REY.6. l Page 2 of 11 l NOTES

1. The maximum allowable stat'ic tray load is 35 PSF as soecified in Specification No. 2323-E5-19. This load includes the weignt of the cables, the tray and the added siduails.
2. Cut.out new additional sideni1s at cable tray' support locations as requiruf. similar to Detait shown at ' tray splice connector locations.---
3. A minimum af two (2) bolts per new additional siderail'section is required except where physical limitations exist or minimum bolt spacing would be violated. ,.

h 4. This dimension to be 2" for 6" sidera11s and 3" for 2" siderails.

5. For cable tray fittings where a lip is needed for installation of a tray cover, a sidera11 shall be constructed from electroplated gal-vani:ed sheet metal (16 gauge mininun.11 gauge maximum) to the di-
                                           -                                mensions shown on Page 10. This sheet metal matarial is NNS. The additional sider 11 shall be attached to the existing tray using the l

Details shown in this DCA. l -  %

6. The position of side rail can be adjusted so that the effective tray- 'I height as shown in the detail can be maintained. Refer to sections ..

on Pages 3 and 10 and detail on Page 9. 6e 4 6 O i. mwr, CALC. NO. M-39 I at b , e emane *

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                       "-                                                                                                                          COPANCHE PEAK STEAM ELECTRIC STATION uo che a a a                             6    moJ          r0              2-17-54..                   ELECTRICAL ENGINEERING GROUP u As Netzn                                 24 cm ,           cs i 3 2c-.32.

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5 ##/.- CW TEXAS UTILITIES SERVICES INC. H N NO TE.0 ' G.-W1 COMANCHE PEAX STEAM ELECTRIC STATION No rppuGE 6 m 0J 80 1

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TITLE l TKn Y B A RRIER DETAIL OF DRAWING l OWN. BY' l pr o .Jo nes l z W y l ^ N R F D A m ti spp:

            .)

REV1 S I ONS '. NO. DWN.:CKT'D. DATE TEXAS UTILITIES SERVICES INC. Ncv/ 'cuerr - 6 m OJ FO 21794 - CDMANCHE PEAK STEAM ELECTRIC STATION ELECTRICAL ENGINEERING GROUF ___ _______ __ lb)??/ M _ !

It .. Page'1 of' 1 I P29.@. OO O2 g APR 16 BB4 { L,. CO..dCHE PEAK STEAM ELECTR1C STAT 10. l U DESIGN CHANGE AUTHORIZATION m j~, , IL.13lhNb4 DCA NO. 20.239 { l

                              TWILL) (naxxxx) BE INCORPORATED IN DESIGN DOCUMENT
1. SAFETY RKl.ATED DOCUMENT: XX YES NO
   .i                   2.       ORIGINATOR: CPPE XX                    ORIGINAL DESIGNER
                                                        ~
3. DESCRIPTION:

A. APPLICAELE 3RR3/DWG/0000NSim 2S23-El-0716 REY.18

8. DETAILS PROBLEM: Cables are above side rails in trav node T130ECG41.

SOLUTION: Install 6" side rails at trav node T130ECG41. Add trav node T130ECG41 to Note l'd on nenwing 2323-El-0716. mn omCE AND

                   ~

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                                                                                             '*                ~

T OLY

                                                                                                                     ~

RECEIVED " 'E opR ?G1984 .r # An' 3 ~ - - - - - u c r- A 29ei DOCUMENT CONTROL gy 4 y ,,a

4. SUPPORTING DOCUMENTATION: ,

RTK:pg April 12, 1984

5. APPROVAL SIGNATURES:

ORIGINATOR: ef 441__. DATE /J # A r c v 5 A. B. DESIGN REPRESENTATIVE:

                                                                                                            #kh[M           DATE    4'//3/h~#

C. DESIGN REVIEW PRIOR TO ISSUE: Mll , SN DATE e!. -84. XX NO YES: P. O. NUMBER:

5. VENDOR RELATED CHANGE:

I

7. STANDARD DISTRIBUTION: Roy T. King EE (1) / /

(1) R. P. Joyce EE (1) ATTACHMENT M- M 1SRT / .- ARMS (ORIGINAL) M. Welch QA (1) CALC.NO. QUALITY ENGINEERING (1) DCTG FOR ORIG. DESIGN (1) $q.C OG (p WESTINGHOUSE (1) DCA FORM 9-82

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                       .-                       R E D E 8 v r. w'                    TuGC0(2)                               g PAGE l'0F   2
           ,         ,                                MAR 0 6                                                                                '

CollANCHE PEAK STEAM ELECTRIC STATION /.' N&Ek ' DESIGN CHANGE AUTHORIZATION DCA NO.' 199To D, (WILL) ( h h BE INCORPORATED IN DESIGN DOCUMENT NO

   ,                        1.               SAFETY RELATED' DOCUMENT:1YES
2. ORIGINATOR: , CPPE g ORIGINAL DESIGNER
       ,-                    3.              DESCRIPTION:
   "                                                                                                                                            REY. /6 A. APPLICABLE $ /DWG/ % $                                    2W9-E.1-}~7 B. DETAILS 99A61 GW. fAAt.46 A.cn AA,Va Tw 9ng EAiLA n;r rcW Notn<

mes/wieA T1:=,wecuka Twx Etw)<,,2.. Tuxed sg . TwKaned Twgends ruas penuse tts, Telv e n V8:PS 'EOM 6E tW, (GSTA LLED. MLt1T)Oki! TM6 TALL (o M D6 RM L6 oLi TME TRW AloDGA L.6TED L A60VE, Scs ' Pass. 2 FOR 6/s.Tc_u , 35-1.195_ -- RECElv tu MAR 141984 RM ' cM.,

                                                                                          -          _ _. . m       r--nu ront       Ft K/, #9r6 - 110%

gwvinuu ,

4. SUPPORTING DOCUMENTATION:

DLA M3 ft.L [ LATEST RE E .D ArrInt" a hir I Vit V I I Iti L, Miw OiGlhEERihG' LSE Oidy

5. APPROVAL SIGNATURES:

MA, 80, DATE 8-6-8M A. ORIEDIATOR: B. DESIdiREPRESENTATIVE: h5/ DATE 9-d-44 DATE 4 M C. DESIGN REVIEW PRIOR TO ISSU(i ./se G 'ff.am

, 6. VENDOR RELATED CHANGE YY N3  : ,.P.O. NUMBER u
7. STANDARD DISTRIBUTION:

f ' Allen W. Hollis EE ARMS'(ORIGINAL) EE I QUALITY' ENGINEERING l'j) l Reed Smith 1;; Robert P. Joyce EE I ))l . [ DCTG FOR ORIG. DESIGN Qag hg }MarkWelch QA i ') DCA FORM 9-83 C A*ITACHMENTn-sgT 7 jr CALC.NO. M-39 ,

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1. l P % 4 E. 2 o f 2 ) j i 1 l

                                                                                                         ..          aB40 Tl3KECW60-                                                                                                                -
                                                                                                                                 .Tl4KEDN34-                                                            Tl4KEDN33
  • EL. 84s

EL 845 *

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G 84&' Tl3KECW62 i ELB45'Tl4KEDN35 . , w y- - g ' i

                                                                                                                                  *TI3 K C W                                                                                         ..

t%ax ovruus.O sec.T1o4s witt avs G" sesarcts seso. NOTE: TRAY A10PE N(JMBERS ARE. F0R REFERGW.E 0/LY MTACHMENT b SRT-(s./C CALC NO. M4 -

                                                                             . .                  TITLE                           l ELECTRICAL EQUIPMENT AREA CABLE TRAY    -

OF DRAWING l PLAN EL. 83/'6" DWN. BY: l M.W, hu 16  ! [-b-b4 O.Dscerr) h[ REVISIONS: i NO. DWN. C KT* D.l DATE TEXAS UTILITIES SERVICES INC. O Md SM 2 M.y C0!%NCHE PEAK STEAM ELECTRIC STATION ELECTRICAL ENGINEERING GROUP HO ' 2323-El-717

      - - - _ _ _ _ - - _ _ _ _ _ _ _ - - _ _ - _ - - - _ _ - _ _ _ - - _ - _ _ _ _ _ _ _ _ _ .                                                                                                                                                               i
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R E..C E.I V E D , 7 COW NCHE N S M.. EC W C S W ION

   '                                 JAN 27        -

DESIGN CHANGE AUTHORIZATION r

                                         bMrbe%PORATED IN DESIGN DOCUMENT                                                                                        DCA NO. 19.687 (WILL'                                                                                                 .

XX YES NO 1, SAFETY RELATED DOCUMENT:

2. ORIGINATOR: CPPE - XX ORIGINAL DESIGNER
3. DESCRIPTION: .

2323-El-0602-03 REY. 16 A. APPLICABLE 999G/DWG/UGGlD(EX1 ,,

                        . DETAILS _
                       ?ROBLEM: Cables at tray node T14XSDN61 are above siderails.                                                                                                                          ~

s .

               .__ 50l:UTION: Add note to drawino El-0602-03 to read as follows:
                                         " Field will replace 4" siderail tray with cable tray havino 6" siderails or modify 4" siderail tray to have 6" siderails at the following nodes:

T14KSDN61."

                     - - . . - - .                           - . . . .                                                                                   3_g _ g 3y                                           _

RECEIVED FEB'011984 3

                                                                                                                                                   - 00Uidid G0iv un.a.

e

                                                                                                                         , CAD AEClOC AMT 4,      SUPPORTING DOCUMENTATION:

APPROVAL 31GNATURES: RTK:pg January 25, 1984 5. CATE u s u - A. ORIGINATOR: $ #/i

5. DESIGN REPRESENTAT YE: [ ",~ DATE / #7-84 C. DesseR REVIEW PRIOR TO ISSUE. ao C m DATE
                                                                                                                                                                                                          /M4 6.
                                ~

VENDOR RELATED CHANGE: XX NO N/ O YES3/P. O. NU R:

7. STANDARD DISTRIBtf7 ION: Roy T. King EE(1)

Reed Smith (1) R. P. Joyce EE (1) ATTACHMENTAp39 T7I ARMS (ORIGINAL) EE (1) UJ C. NO. QUALITY ENGINEERING (1) M. Welch QA (1) DCTG,.FOR

                            - . - ~ .n. .e e ORIG.
                                             .. _DESIGN _.._ m (1)                                             __.         . . . _ . . _                             ,,_.,,__ ___,__,

j e

ggp 1 AI A LY'613 ko. f!becod ,

l ' CJfn - I - $~ l'd Ndh'Uf6 blP&%dll. PXT54Ml00. Ralu6 e Kuu 2 OF $Y $ MMMAKy. frBM '3) tur west er sus 6tterAL Em46 top WA+ uuvuowu, MO I4TORMATl04 WA6 FOUMD OM Tul6 H ATff.ft,

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Nf-V dlDB$2AL 5XT54bl046 WB*6 PW ll# 0 RTO RAT f D IMTO TMS AfJALY61) (.4WAITI% A fl4AL TfLOION A6 To

                           .40W T46 bifuAflod b 'f0 #6 .4A@ LED).

A 2/JX(o 'f d 71'fT 'Tf%T WAb 0$FP A6 7eg 6 p o 4 ylLL prawides.  ! 6dbtK', d. 66fMEA l

                                   %'T     '67ll i

A1TACHMENT E SHT l /E CRC. NO. M-" i l i )- } JOB NO PAGE j MEV BY y[{dh cAtc ao o, DATE CHECKED DATE 1 l . _ _ _ _ - _ _ _ _ _ _ - _ _ ~ -

         +                                                                                                               <
.- 4.1 TrayFil1 Summary 1

Cable Trsy Teight(lb/ft) l Basser Number Actual 10% of Cover + sub- Value to - (tray aede of Cable man Trsy total Therme. TUTAL Variance be used

                                                    =alat)       Cables      Fill    (3 esf)    weiaht (note 1) laa vt               vt    (note 2)   (note 3) i                                                       %        Hi_       11 04      63. 0     11. 2 1    19.4 6  u.A ,         24.2 (    6498       91.0 6 N4% M                 (2od       6.0       ll'2l    'd9.As       1          29.2 6    OM'd A6% %                v2.od     6,o         \\!1l    99.2d                  $1C 04M                Y IMB 46               14.eto    6. o       11.'2l    22.o?          )       w,ov 0.#44           92D7 I6?4       46         (4.86    6.0        Il.21     42.07          \       M.o? 6.444 Neos           4(         14 &     6.o        lI/11     42.07           i      '32.07    Gdd          "

a WWJo 96 14.86 4.4 9.'b4 18.1 '2R.7 0,602 26.9 3 69 4( 14.sc 4.6 9NI 1g.7 8.7 0602

                                                   #bw             96        14 % a.6              9.sl     2e.1                   98.7     aco1
                                                           %%7     46         14.M      //.6       Q.M     2A,7          i         $8,7    0,@1           Y
 ,                                                         22     46          16.17     4,6        9.M      $7.01                   '29.61   d47-       A901
                                                   ***Ai2g        48          16.1 7    44        4S4       24.01      i            no I     .49 7 m2p(121        48         16.l?     4.4       9.34      R ol                   0 4. 01   .#97 I"%27           48          6,I? 4.6           9.9       1.9.01                   A9.o'    do          v Nets 1: Subtatal-(actual cable fillb(10% of mas tray vt. iac! cable)+(cover. tray vt.)

(Sobtstal < 35 puf) Nets 2: Variance.ns . ,.i=. ror cu.us.ai, A..i .u. ,4,.no.)

                                                                                                                    ~~

(ess totalvt) (Man.value for rea) Note 3: If Variance is > 05.then ass multiple cable tray weights. If Variance is s 0.25.then use the maximum valos for the whole run. TUGC0 CPSES UNIT 1 Joe no 0210-040 " any sv om casesuto matt W%Q *

                                                                                                                              " "O 195 82-04 or
                                                                                                                                                          !d' i

ATTACHMENT E SHT L / M CALC.NO. ^^ ~ M .. i

1 V 4.1 TrsyFi115emmary CableTrsy Teight Ub/A) Banger Number Actual 10%of Gover+ Sub- Value to (trsymode of Cable mas Trsy estal Therme- TUfAL Variance be used

                  ,,,sola0                      Cables       Fill    (1esf)       weiant (note 1) laa vt                  vt   (note 2) (note 3) 6')(a                 filo        l%g     d.6         G44        es,64            (         49,64   ,46      $ 6d N5e,                     i16         \4.8     4.6          4.M      ss.6L1                      9aul     .46
     .                       526                 II(o         R.8     4,6          q,#      43.6d                      ss,4V     .46        V 1        W14                          lIlo         t9.s    4,4          9.M      %.6A         A4.0           6*4.64   e.oc     C.b4 I4e 1%I         26.61     6,0         W 34     416 4          sl.o         77 %      o      77.%

g "$2n 121 sr.c2 6,o MJ4 46 m src vv.% o

f. */<us 121 M.c1 6.0 m.w 46,% si.o a ss o
                    #/M,9                        l%I         sta2      6.0         W.W       46 4           st.o        voz        o y      #l9sm                         \2l         24,02    b.0         AM        46M             21. 0      qva        D        T Nees 1: Sebastal=(actual cable fillk(105 er mas tray vt. inel cableb(cover +truy vt.)

(Sekstal 435 pef) Nees 2- arian ce.sv., ,-i - r., .).n.u'-i _. * -i -) (esstotalv0 (Max.value for rea) Nesa 3: If Variance is > 02.thea ese multiple cable tray weights. If Varinace is s 92.then == the nazimum valos for the whole rua. TUGco CPSES UNIT 1 Joseso 0210-040 " gLgQW dh cau:mo ,

                     .              .               a.          <-                                                  ss 82w                     s mAcwort.E._sg_I/ u Ct,tC. NO     /^- M    _
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                      .            4.1 TrsyTH! Summary 1

CableTrsy Teight Ub/ft) Basser Number Actual 10% of Cover + Sub- Value to (trsy meds of Cable man Trsy letal Thorse- TUTAL Variance be used soint) Cables Fill (3saf) weiaht (nots 1) las vt vt (note 2) (note 3) 227 424 44Af fo$ 14 ~#l @,69 41.0 9I 99 c cr 9l,@ o, , 4 024 14.e( 6,0 14.44 60.64 414 91.9 9 ep N/4916 M e) 94.M 6,0 14.Pl 60.59 90 9t.49 OD n GS 22N 94W b.O \4.~pl 60.M bl.0 91.S4 c.c  ? A 1693

                                           #83             :Wr,                    ser     6.e    11 21      44.o 2     U4        M.2r       ep         26.2.2 522V
                                            '4227         Ja                      ger      6.o     it.2i     at-n        (        E 22.      rro r            MG          48                       Act     6,o     11 21     2< 22.               M.22-       rso                    I
                            ,      "%                     %                        s.or    6.o     it.2r     um          ?        un         av
                                %               S10       %                        sot     6.o    it.3.l     16,12       v        %22.       tro           Y Nets I: Sebastal=(actual cable fli!M10% of mas trsy vt. iaci cable)+(cover 4 tray vt.)

(Sebastal < 35 pef) M 2; ygriggces(Maw weba= far nankiinativM**f ennnnetwahnm) _ (ess totalvt) (Mas.value for rea) Note 3: If Variance is > 025.thea oss multiple cable tray weights. If Variance is s $25.them use the maximum valos for the whole rua. TUGC0 CPSES UNIT 1  ! Joe mo 0210-040 N l h 3 WbF c a csoo i v ,, s. se,. L tef- 82. o# "3--- I ATTACHMD6 E SHT C /."L2 CALC.NO. #I*34 l

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f l ~. , l ? NAME  : Cetoy N1ut.1 A Ge r.  : 4897 l SuhfCc.7  : the ' of clice/2A/L cx7cwaion:

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4 41- co uw, uue; - - HANGEA No. ?AELE mAv walGHT (ibm) cAtwa cAats ] lmgM, foraL COMMENTS (oce) , l l l Ti3&p66 r,,q . u rt - i z. j Euq -s ,- cout . i601 lb7 - 39.13 a 60 N* b2.! 31.D B9,$ w ,cj p.

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   .'                   4.1 TrayFin summary               ow,.wucp.

1 i Cable Trsy Teight Ub/ft) l

     '{

Hanser Number Actual 10% of Cover + Sub- Value to l (ttsy nods of Cable max Trsy total Thermo- TUTAL Variance be used i point) Cables Fill (3 esU veight (note 1) laa vt vt (note 2) (note 3) Ru u - 6 . 4 2o3'-it w.toB.51 15 17. 6 612) 24l 4790 ~750 lb4 f ~72 01 36.6 108.51 8 te g g , y, 3163/643) Ib3 34.27 96.36  %$ e l'L6 316 z.(6160 16$ 34.17 l 1 5214/6U0 16 6 34.27 i W'14.d f

                                                        -                                                  l                            Sm 77 f i5og (650g3      mi-1550/655 0             -

iS6o (656o) - y < p o , o g b# b -6 6 tow 3c to :%) ,gg q ag. is ba< vo 00 A 30<6 l

                                      % bu t WG SEcka %cb nkes                               ascA. 14    % a. % .e G Tn.m.

Rhs is to acwun7 74 a idiko n L M. 4Tfn ride wt l l Edmsi 04 it! AT MA- / Se sf M.te 9 GGe. Wofe.t2. , 6, E 4 3cq . l No.62- $ l l 1 Note 1: Subtotal-(actual cable n11b(10% of max tray vt. inel cableh(caver tray vs.) I ($ebtotal < 35 paf) Note 2: Variancesv., vain. ror runwinai,w.i genort vain.) (use totalvt) (Max.value for run) Note 3: If Variance is > 0.25.then use multiple cabla tray weights. If Variance is s 0.25.then use the maximum value for the whole run. I TUGC0 CPSES UNIT 1 ( Joe wo 0210-040 *^08 suv sy on.n ennenen om gAdI dh cate no (95-08z-09 UTACRMENT E SRT 6 /7m Cat.C NO. M- M ( .

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I AtJA L Y$1S N O = s 7(,- o k4 - C 4-L t o P V et= T R A 4 FILL W M I" A < V 15 /I rTA C PC .

                                      )      7F!C n/T Cr SIpfRAll. EX TEN SIONS wA S Nor AVAIL L ?LE.
                                               %rE R TO ~R/L CTH- l- 723 4      THI S       Si OER) tl gyyEN Slo N HA S N o r 8 FEN INcrk oo f '* D IN TO      '+//S }/JAlYSIS       $lklid THE EX TEhlr O r: RA t L5 I S N 0 7~ GILIEN Oh! THE Ok)h5 - SEEht S r0 66 (CfJi~lNED TD cPENINir THRCit (rH TrIGKf)OL A fr 6           kllKE' BitRTON           X +7(oO d

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1 .

            .             4.1 TrayTillSummary 1

Cable Trsy Teight (lb/ft) ( Haager (trsy mode Number

                                               . of Actual 10% of Cable          man Cover +

Trsy Sub-letal Thermo- TUTAL Variance i Value to be used soint) Cables Fill (3 osf) weinh:. (aote 1) laa vt vt (note 2) (eote3) d60% \ >-gaggwge ou ew t, , geogy -nw saw, -

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17t3 l% $0 34 0.0 lt.4 s 4eaf 46.ic. O e. iG

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f (2 64 46 10 4C '

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44 4 0 4 g.g Note 1: Subtotal.(actual cable fillM10% of max trsy vt. iaci cableMeover tray vt.) (Sebtotal < 35 puf) Note 2: Varian cedWar vala* far ruakfiadhri*' *"aaart **'"*1 (ese totalvt) (Max.value for rus) .o Nota 3: If Variance is > 025.then use multiple cable trsy weights.

     ,.                                         If Variance is s 025.then use the maximum value for the whole run.

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       .                                                                                                      i Memorandum File: O? /O-c4 O To: Au. Tucto 'PEtsourtEL (O 6LE. T2.A Y5)
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Date: //1 A s' (o, I@ %

Subject:

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           -                                                                                                                                                             Revision 12 Page 88 j       :b_3t CABLE TRAY SUPPORTS                                                                Ii6-020 - E- 2 3 CTS

!.1 Review Issues List N A - clamp's ability to provide bracing (also see Review Issue 18) and neglects compression of the bottom flange j due to support frame sidesway and seismic uplift. For the cantilever type of supports, the "1" value in Equation 1.5-7 is improperly selected as discussed in Review Issue 14 Status: A. Gibbs & Hill should provide technical justification for the assumed load transfer mechanism provided by the tray clamps and the fixed end conditions used in the evalua-tion of the increased major axis bending. B. For status, see Review Issue 10. C. For status, see Review issue 10. D. Gibbs & Hill should provide justification for the as-

    ' (,f                                               sumed location of the applied longitudinal load, the assumed behavior of the tray clamps, and the system concept. (Also see the status for Review Issues 10 and j                                                      18.)

E. Gibbs & Hill should provide technical justification of the beam adeq.acy considering weld undercut and bolt hole section reductions occurring at the same location. (See also Review Issue 9.) F. Gibbs & Hill should provide technical justification that the combined direct and St. Venant shear stresses are at an acceptable level. G. The outcome of this issue is dependent on resolution of Review Issues 14 and 18.

                                                                                ! .. . .. '[
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25. Cable Tray Qualification . ..iC '

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References:

1. Gibbs & Hill Specification 2323-ES-19. Revisi$n 1 .

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2. Gibbs & Hill Structural Calculation 2323-SCS-111C, Set 1

7 Revision 1.,, {

3. T.J. Cope, Test Report and Calculations for the Qualifi-

'n cation of Cable Trays

 '5                                                                   4. CPSES FSAR, Section 3.106.3, Amendment 44
     ~1
5. Gibbs & Hill Specification 2323-ES-100, Revision 2

,y

6. IEEE " Recommended Practices for Seismic Qualification of Class IE Equipment for Nuclear Power Generating Stations," STD 344-1975 c.
7. CPSES FSAR Section 3.7R.3.5 I
8. Gibbs & Hill Drawing 2323-5-0901, Revision 4 )

n, qp ' L.M. Popplewell (TUGCO) letter to N.H. Williams (Cygna),

9. 1

%,, " Response to Cygna Review Questica 2.1 of Letter ]

         ,                                                                 84056.019," dated August 27, 1984 with attached calcu-                             )

f, 1ations

   .N
      .'                                                            10. Cable Tray Thermo-Lag Evaluation Safeguards Building, Elevation 790'-6," Cygna Technical File 84056.11.1.1.315
11. TUGC0 Instruction CP-EI-4.0-49, Revision 1 b
12. N.H. Williams (Cygna) letter to W.G. Counsil (TUGCO),
                                                                           " Cable Tray / Conduit Support Review Questions,"

j 84056.089, dated October 21, 1985. - Summary: The qualification requirements for cable trays are outlined in References 1 and 4 In reviewing related specifications, u calculations, and installations of cable trays, Cygna has i, noted several areas of conc 9tn , h , ATTACMT.MNT_f_*iHT ~2 '::F.1. ! ,

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CABLE TRAY SUPPORTS Il6-020 - E- 2 3 CT S

                                                               ' Review Issues List A. Qualification of cable trays is performed through static load testing and calculation of loading interactions for dead load plus three components of seismic load (Reference 1, Section 3.9 and Reference 3). Seismic loads are calculated by the equivalent static load l

method, using total tray dead weight times the peak l spectral acceleration. No apparent dynamic amplification factor (DAF) is used. Reference 6, Section 5.3, and Reference 7, recommend the use of a DAF = 1.5 unless justification is provided. (See also Issue 8). B. The interaction equation specified for checking cable tray capacity (Reference 1, Section 3.9.4) is limited 4 its application and may have been used incorrect 1: The testing and qualification of cable trays is based on 4 an 8'-0" simply supported tray span (References 1 and

 \'                                               3); yet, Reference 8, Note 13, allows a support instal-r" 7 h         il          lation tolerance resulting in a maximum tray span of 9'-

jm j 0" for Unit 1.

                            >0 9                  The capacity values derived in the tray testing are l p'        ,

a 4 , total loads (in lbs) uniformly distributed over an 8'-0" section of cable tray (Reference 3). These values, Fn ' l gw .., Ft . and F), as used with the interaction equation, are

                           ,                      only applicable to tray sections with 8'-0" spans.
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                                  .               However, for the fire protection evaluation calculations

{ [~j ."j j (Reference 2) and tray span violation calculations

                               '-p                (Reference 9), total loads for various tray spans were Ik f {-j jjp$!

calculated as f' = w

  • 1, where w is the tray unit weight and 1 is the tray span. This load was compared j g ;- with the rated tray capacity using the interaction equation.

l ,cf

                             .~
                          ,HF ,: ,                For evaluation of trays with . spans other than 8'-0", a l '3 d
                          .                       capacity comparison must be made in terms of tray bending moment which is proportional to (w
  • 12 ), rather ,

than the total load on the tray section. For example, , Q-u Texas Utilities Generating Company rd'd, - m) Comanche L Peak Steam Independent Assessment Program Electric Station

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                                                ^

load of 1600 lbs (200 lb/ft), by increasing the span to  ! 10'-0", a uniform load of- 128 lb/ft (1280 lbs) would result.in the-same bending moment at mid span. There- i i fore, the capacity. for. the 10'-0" span would be ' 1280 lbs i and not the 1600 lbs assumed. l C. Cygna has noted several instances of modifications to

     '        ~

cable' tray hardware without adequate justification or

                                                          -documentation.
1. Tray Segment No. T1305CA46 is assumed to be a 24"x6" ladder-type tray in the fire protection evaluation calculations for Safeguards Building Elevation 790'-6" (Reference 10). Cygna's walk-down indicates that this tray is actually a 24"x4"
  ,       c.,

ladder-type tray with 6" side rail extensions added

          @                                                         to increase the tray depth. The tray qualification test report (Reference 3) does not provide qualifi-
                                       .- -                         cation for trays using. side rail extensions. The 4
                                         - '!                       procedure governing fire protection evaluation
                                      }%,3!

(Reference 11), Section 3.2.2.2 states:

                                               'n                            Evaluation process described in lQ    .,: 9 ,

3.2.2 is not. applicable to the cable trays (and their d

                                                  ,                          supports). .For such cases, actual
                                    .;(17gl as-built configuration of the tray system with actual cable weight
                                          ,3 Tj j                           shall be taken into account and
                                         ' il '                             proper. engineering evaluation
p. **

performed.

                                                  ;;                                      No standard methodo-
                                         ~

logy is recommended..but shell be based on acceptable engineering

                                           ,                                practice.

i :_ N The referenced calculations do not perforti an .!

                                          ' O!                    evaluation of this tray segment. These calcula-                                   I tions (Reference 10) were obtained from TUGC0 prior                               f
 .b       '                                                                                                                                         '

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  • Review Issues List to their design review; therefore, this possible y ' omission may be corrected through the design review g
                                                             ' process.                                                                .

S 4

       ,                                                 2. Tray Segment T120SBC35 is joined to a tray reducer y
                        '                                      with side rail splice connector plates. These g                                                              plates have been modified by removing portions of their bottom flanges such that only the web area remains. This connector will not satisfy the requirements of Reference 1, Section 3.7, Paragraph f, which states that connectors "shall have moment
 ~'                                                           and shear strengths at least equal to those of the continuous uncut side rail." Cygna was unable to locate documentation justifying this modification of vendor-supplied hardware.
             ,,                                  D. Cable tray section properties are calculated using the

{ static test results (Refer?nce 3). The moment of i inertia is calculated based on the flexural displacement formula for a simply supported beam. For horizontal transverse loading (i.e., in the plane of the rungs) ladder-type cable trays show a truss-like behavior, and the deflection will be due to both flexure and shear deformations. - i :-'

  ?                                                  This will affect the calculated moment of inertia as             ;d used in any Gibbs & Hill analyses which consider the                '

tray properties for frequency or displacement calcu- - lations. ,h. Status: 4 A. Gibbs & Hill should provide justification for the DAF used for cable tray evaluation.

 ,'                                                                                                                   .t B. Gibbs & Hill should provide justification for the use of             '

the tray capacity interaction equation.

g. C. Gibbs & Hill /TUGC0 should provide documentation illus-L, trating the acceptability of the use of tray side rail ,

!: extensions and modifications to tray connector plates. ' l ! d l Texas Utilities Generating Company ' i L ji A Comanche Peak Steam Electric Station L Independent Assessment Program - All Phases , miiii E!!!! Job No. 84056  ! PRJ:23 CTS-ISSU I [ i

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  • y
         . w ,

Cygna has requested additional information on side rail extensions in Reference 12. . b -ii f D. Gibbs & Hill should provide justification for the use of d the flexural deflection formula for the calculation of the cable tray moments of inertia. J d

  ;                 26. Base Angle Design

References:

1. Gibbs 8 Hill Calculation Binder '2323-SCS-215C, Sets 2 through 6
 }                                             2. Gibbs & Hill Calculation Binder 2323-SCS-101C, Set 1.

Summary: A. In References 1 and 2, the base angles were mode'lled as , U( simply supported beams. Tnis modelling technique does ((, not include the stiffening effects of concrete bearing j-at the angle ends. C d , B. The principal axes were not considered in the analyses

                                                                                                                          ~

a p of the base angles subjected to the various loadings.. ;4m

     ,                                        C. The' base angle lengths due to. the maximum spacing of the      3 Richmond Inserts were not considered 1.1 the working point-analyses.

(

 ,;                                          D.

j For support types Dg , 02. L-A 1, L-A ,4 SP-4, SP-6, SP-8, I

     '                                             - and Detail 11 (Drawing 2323-5-0905) the design calcula-                  i tions do not include an evaluation of the base angles.
  • Status: A. Gibbs & Hill should provide technical justification for j modelling the base angles as simply supported beams.

j B. Gibbs A Hill should consider the principal axis pro-t Q perties of angle sections in the base angle analyses. h:

 ..,                                         C. Gibbs & Hill should consider the most critical spacing
 /;

of the Richmond Inserts in the working point analyses. s h G Texas. utilities Generating Company Comanche Peak Steam Electric Station

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