ML18067A637

Excerpt from Ampacity Evaluation for Duct Runs Containing Continuously Energized Power Cables, Revision 1

ML18067A637
Person / Time
Site:	Palisades
Issue date:	07/08/1997
From:	CMS ENERGY CORP.
To:
Shared Package
ML18067A634	List: ML18067A633 ML18067A635 ML18067A636 ML18067A637 ML18067A638
References
EA-ELEC-AMP-040, EA-ELEC-AMP-040-R01, EA-ELEC-AMP-40, EA-ELEC-AMP-40-R1, NUDOCS 9707180086
Download: ML18067A637 (26)

Text

-1 ( I ENCLOSURE3 CONSUMERS ENERGY COMPANY PALISADES PLANT DOCKET 50-255 Exerpt from: EA-ELEC-AMP-040, "Ampacity Evaluation for Duct Runs Containing the Continuously Energized Power Cables" 9707100086 970710 : I PDR ADOCK 0500025fi p

• PDR/J -----25 Pages I )

PALISADES NUCLEAR PLANT EA-ELEC-AMP-040 . -ENGINEERING ANALYSIS COVER SHEET -Total Number of Sheets __ ....;. '* ,* -:*** le Arnpacjty Evaluation For Duct Runs* Contajnj-ng

-Contjnuously.

Energized Power Cables _ -; .**. INITIATION AND REVIEW . Calculation Status.-*

• Preliminary

• *_ Pending . Final '$-o-0 Initiated Superseded 0 Re v #

• lnit * --Review Method -Technically Revr Appd * -Reviewed Appd CF>Co Descrlptfon By .

--Q-ua-l-+----....---4 By Appd 0 Original Issue _* 1 See Description

..... *-,;,*.* * -*By Date NehlS/ Ashrafi Cale Review _ Test By. Date x I. Manasra -* . Qt--* -:.*x:. . -; . This *analysis is preliminary untll j-ustification can be provided for major.assumption 2, which' that.* temperatures of cables installed in'. duct banks will be unaffected by .any -nearby source. ' .. . . . . . . -. ; . . ' --. . '.' . .. . .. Revision 1 ' . __ _ . -.. ** . .

.. -'. -. '*' ,*: .*-...j ... ,, _, .-i . ,_ *.i ' Revised Sectiq-ns: .!*_',* . . -... . ':' *.. .* f ...... . ' -.. , ." /'* . *:'. Updated_ tex(to remove fy'lajcir Assumption ( and to provide the methodology for using IPCEA ta-bles' for different' and temperature ratings* of cables* . . -' . .. . -.. -' .-: --** : --* . . -.. *_,. '* .... _, Added Secti9n: > * * -' -. :: . ,r. -, :.* * .. ** ': * .. ', * .. . . * .. ; . :.*'. ,* . ... : -... * .. *, -,-..... * ... ; .... * *I :, .I Attachment M -su.pporti_ng

• data cables rated less

• 90°C. ',., * .. ** . .-** .. :, -_,..: *.* ... .. :_: . : ,. . .* .-.. --_.,, .. ' '-r : r .. *"* . *, ... -*** *, . ..;*. .. . *.*. ;. .. ,_.* * .. ** ..... . , . . . . . . . ** ... ** .. -* .... -.. . . . -.. . *. . . . . . ' . . . .

. . :'* ,* ' PALISADES NUCLEAR PLANT. *

• EA-* ELEC-AMP-Q40

• .ANALYSIS CONTINUATION SHEET . Sheet _2_ Rev # _-_._1 _ I.' . OBJECTIVE . Background

.-During an analysis being performed to adjust the anipacity of cables routed in cable .trays with a fill greater. than 30%, it was noted that *

• analysis does not exist to confirm the ampacity for power cables routed . :' through duct

• * * * * -*This EA will establish the .. methodology*and evalu*ate the ampacity for** . '* ..

• continuously energized power cables routed through.duct at the* Palisades*

Nuclear, Plant. * * * * * * * * * * * * * * * . ;* ' PURPOSE . _ The purpose* of thi_s. calculation is fo verify .that the continuously energized power cables installed in duct banks are su.itable for their circuit loading

• condition(s) without exceeding their continuo*us"temperature

• rating,\* . . . . . . . '" . . . . . . ' . . . *,*. .. *** ... _ _. ; SCOPE* . ":\ '.. . *" ... . "* .. *.* *_ . The scope-of this calculation is. limited to* the-.evaluation of ampacities

.. of* . , .. power cables _installed in d_uct sections shown* on drawings in Reference*.

1x.2.* .. * * * * * * * * * * * * * * .* * .. *: : ii .. : : INPU_TDAJi\. . .. :* .-. *.*. . :'* . . -* . ,, ... ; . . *** t * . :: . * *1.) The cable information.

was eXtracted froni the *Palisades Circuit and.*" _ .. * *. Raceway Schedu_le (GRS) database and is documerited in** * * ., _ * " . .. Attachments A

cwrent values were obtained.from* . , . . . EA-ELEC-AMP-041

_(Reference IX.1) -are gocumenteQ in : * * : Attachrrient*L*

• • *. *,. * ** * ** * . -*: .. -::.:. ,; .. ** ,, : ' ':*:*. . . . . . . . .. * . . . . "'"I* "" *'., : : . 2:) The following in tliis analysis was obtained from EA-ELEC:.

• * * -y< AMP-030 (Reference--IXJ)::

• , * * * * *. *

• _ * * ,. *. -.. -Reference/Comment

• , * * .* ; .* ._: .. **** -.. .-.. ' .-*.:* ... '* . ::., ..... " .,'*.. . . '*, ,; .*.' ... *-* . *-:*; . . *. i . * .. :.-"" . r ** : * * .. ;, * * *** ) : * * ' *

• _. : * ..,* * ' ,' **' * * "

• t * * .., ' *"** * : . , ' * * . *Soil

• -. -.*. 90°C-CM/W:.. . _ ... -* . *: .

-.

Th.ermal.

-_ < .........

• . ' ':._: : . . . . . . ' . -' . . . .. . . . . . . .... *' * * * *_-Soii/Earth Tetnpeuat.ure

• _ *;_

• __ . ... ,;, . . . . 20°c 3.) The resistan*ce and copper diameters for cables are taken from . **. . . Sargent Lundy Standard ESA-102 1x.10). ' .. _ . ._ -' ... . *':*** ----------------------------------"'!"""---------

.: .'. --.. *. .-.' .' .;** . -. ' ,:* ' . -. *"'*" ...... _ .

. :'"* .* PALISADl;S NUCLEAR PLANT.* . EA-ELEC-AMP-040 . ANALYSIS CONTINUATION SHEET , **.

Rev # _1 _ .. *. * .. .. *-. *It INPUT DATA

• ..... . : .. .4.) The cohtinuo'us rating of the cables in* duct . . bank Section V-E315 is 85°C. (Reference*

IX.7). The CRS database . was reviewed for the remaining cables in. other duct sections and the . ass9ciated conduc::tor ratings are listed in-Attachment M,

• 5) .. The. duct barik dimensions and, cell sizes a*re takem from Palisades . * -.. .Drawings (Reference IX:2) , * * >> .. 6.) The anipacity of conductors in ducts was taken from iPCEAP-46-426

• as follows: . * --* ..

• Size *110 and larger: *.: * .. .

• 8 KV;* 90°C Conductor, 20°6 Earth,* 100%

• 241) * * ** * * * .* .* * * * . * --* * . . ... . -. : .. . . . .-. -: *. * ... 8 KV, 85°C:Cdnductor, 20°c LF (page 238). * .. * * * . * .. .* . . ** .. .** * .. -* ... :. . ' . -. **.,* ', . . :. Size 1 iind smailer: * . .* -.. * , * * . '* . _ .. _' 1 KV, 90°C Ambient Earth; 100%: .*.** !' *.*: *. LF (page 240) . . , * * . . , * . .. _ : ... . * .-7_.) issued to replace:the soo MG*M .. *_ * * * ...... cables** feeding* the 2AkV Swgr from the Start-Up Transformer 1-2 with'. . ; . : . 1 OOOMCM cables. Tnis data is not incorporated into the CRS *. but wifl ..

• ' * . ;* ..

• be used

.... : .* ... * .. : * * * . . * .' ._. f .. ., "(*:* .. :: . :1 ;:-... . ' . ' . . . .

• -_.-.. :-: ... -:.;. .. * . ,J**: **-*:,:,*** . ,* .... ** Ill. .* .. ** ... . .:. . . .. :* ' ':, .*; . . ' . .-*

• M.aJor Assuroptlaa*s" **-.. <._: '_,:* > ".-:--, . . **: . : ..

.. .. ' .... :' . "! . . ..-. -* .. * .. '* . . * ... ... , .. <

• ., :_ . ... -' .. . 1.) *Not

• • . . -' . . .,** 'to:..' ... .... . . .. *2.) It has been.assumed that there.is no heatsourcE; nearby which*wiil*

• affect the temperature of the in the dlJct. banks.* This * .assumption requires . .. * .. -.. : *. .. . ' . . ' ,. ' ' ... * *-' *: ' ' .. ** ' , ... .. * ... . . . (}) . ' -. * .. ,_:***. . : *. . .. ...... . ... . * . :,,, '* . y' ' . . -* .. '* .. ** ...... ,,_ .;( -'* '"* . .. ' . *<.£ ' .. . . . -.. . . ...... * * ... * . . * * ' I :. * * ." J.

' * ". * * * * . *, ... ,.

@) cansumn.* .

• PGwer * . PALISADES NUCLEAR PLANT" . ANALYSIS CONTINUATION SHEET ELEC-AMP-040.

Ill. Sheet _L Rey.#._ ...._1 _ ASSUMPTIONS* (continued)

MinorAssumptions

• *The ampacity.value in the IPCEA is. based on a duct arrangement of three rows, each row containing two cells spaced 7.5" apart. The * * : installed configuration of these .duct.runs is three cells containing the ' power cables on 'each side of the duct spaced approximately 1 '-0" .. : : *:: apart .. *This cell arrangement is less restrictive with respect to* heat

• e

• * *': '* . . . ' .. -*:--' -* -* * =flow arid therefore, the allowable cable ampacity would increase.'

In *-. *** .. * .. * .. -additi'on, these cables* feed the 200HP Cooling* Tower Fans: which '_is : . . . * **expected to have an actual load current less than the rated value of. : : ..

• 251:'Amps

... Based on judgement, the expected increase-. .. . *: -** * *.* jn cable anipacity and. reduction in FlC will *account *for the* 1.6°/o* . _ *

• overload .condition in the 7.50 MCM No required ... * ... -*_:-.-. :. -*-. IV. '.ACCEPTANCE-CRITERIA

-.. , '. *, ... . .. The are if the ampacity of the ..

• cables exceeds* the calculated maximum. full Joad current. . If the full. loacL ". *current is greater than the ampacity, the rriaximum calculated conductor: : -. *: temperature inside-the duct.was determined.

• If the insulation temperatur.e.

• * . *. rating .of the. cable exceed.s *calculated temperature, the cable is -"' < : -*. * ,

• df;?emed acceptable;

• '. * *. : . * ---.. . -' . -* . . '-'. . . . . . . . . . -. . **-. ' .. V. .** METHODOLO_(]V:c, . '*.-;:". .... /. -_:: :'.:: .:: -*' .. . . ' . . . . . . -. . .** . . ' *' .* .

shown* ori *Palisades In'. _:_' _*: .: ., Reference 1x.2wltrbe reviewed'to seleet themost heaviiy. * .. .*. . .. * -* *' . .. ' '_loaded/worst case: duct section from a. cable temperature point.. . . . . --. . . . -. -. . . . ... . . . * .... *** .. '*

S&L. computer UCTEMP** (Underground Cable Temperature.

• Program) will be used to model the worst case duct section selected*

in

_.1. *' . _ , . .. .. * * * . _ * * * * .. -* .,*.* . . .::..*** .. ' . . . . .

. _': .. . _.;* . . *. ,; .. ' *-:z: ** * . . . * .. .* ,** *: .. , . *: \ -. ..** .. . . * . . ;, ' : . . . . ' .. ,._ . ., } ... . ,* .... . -' . .* *._: .. *'i . . . . .. . -* .. ,, .......

. *--.. PALISADES NUCLEAR PLANT EA-* ELEC-AMP-040

• .* ANALYSIS CONTINUATION SHEET * . . -. . . Sheet _5_Rev #*._* ...._1 _

.-' .. v._ METHODOLOGY (continued).

-; .* .. . . ** 3:) UCTEMP wili used .to obtain the ampacify of the power cable *. ;;:-. . which has the highesttemperature in step" 2. . . ... * . . . *. '. . 4.) An ampacity table listed in IPCEA Pub. No. P-46-426 (Reference . *

• IX.6) will be identified which will cJosely represent the ampacify of the . * . -cable obtained.

in step 3. . . . . . . ..:. ' --.. ' .. 5.) .The ampacity table identified in step 4 wilf essentially represent the* ..

• ampacify of the power cables installeq_

in. the_worst case se*ction.

of.

• the _duct bank at Palisades Planf. A list of cables.* per duct will" be * ... ... . . .*.

• develo"ped foteach duct shown on the drawings listed in

• * : .. *,

• IX.2 and the ampacity from step 4 will be used to*

• * * : ** .. acceptability. . . . .. . . . . . '. .. .. t .-* . * ... : . *. -. *. *:* . . . ** .. *. '

• 60>: 1( in addition to the power _cable in a ceil, the cell also 'contains*

• '.: --.additional power: cables, instrumentation a*nd/or* control cables; the ...

• ampacity of the power cable from,the IPCEA table will by * ' .. * .... *.the *a*ppropriate values. identified.

In Attachment*

H *to account fo_r ttie. ** * :*-. ' .temperature drop in the instrumentation/control cable mass occ.upying.

' *. the -cell. These derating values are per Attachment *. . . . : . ' . ' . .* ' *." .... _. *. * . , : . _.-. 7J The duct cable*

table for Palisades Plant'will be * : .. * .. -' : * .> -reviewed*

to identify the duct bank sections where the loading* current of the* circu_if is within *theirampaciiy and where the cables! circuit . *. *-. . loading current exceeds. their ()mpacity as identified in step 4 or as .* : .. *._further derated (per stepJ))._*:_

• . **. -* * * * * * . . . * " -._;: _:. ' 1 -, . ' .. _. . ,._. .. -. * .. _ . 8.) No of the.

bank_

.*is *.necessary where th'e: . * . .. . * *. loading currenfof the Circuit is within their ampacity per the* ampacity * . -. ->> * * *table identified in step 4*. This indicates that the conductor*

continuous

• _ . temperature._is below its:-rating:

"_ ** * . . . *-: * . *. * -.. _ .. , . .. *: . -. "' _.* .. ... -.. .-**-::* ..1 .. _ ., . . '*' ... * . . . . . . . .

• . .-:. ; '.'. . . . . :, > .:* .. . 9.) The duct bank sections where the loading current of the. circ.uit -.. . . . . . *exceed!;

their-ampacity per the ampaCity table. identified in* step 4 w.Hr ' * . be further by individually modelling them in

_This . .

' . . * . . *. step will determine whether or not. the cables'

• • • :.: ..... * ... *. fating is exceeded in in_stalled configuration vvhile carrying the . : .* .. . . . * *: * . connected full load curr.ent. . ** * *. . . . . .

• :.: .. .... . .* .*. --10)'

ampacity for eable sizes of AWG 1/C #10, #12 and #14 will be _: _ . .'. . 'calculated U$i,ng the _IPCEAtables and the 1 2 R relationship between".*.

,,,. *-.

• cables sizes. . . . * * * * * * -* --. ... ' . . . . .* ',* . . * .: . . " .. .*-... *.* : .. .-' . ' .. * ' ' * ... *. ...... '*,..._*_.

-_! *.* *.,

' 'PALISADES NUCLEAR PLANT ' EA-ELEC-AMP-040 . *.ANALYSIS CONTINUATION SHEET *. . . *: . . . * * . Sheet _a_* Rev # 1 * * .. , *:**.* . VI .. *

• CALCULATION ANP RESULTS . . -. . {) A*review of the Palisades electrical drawing identified in Reference IX.2 indicates that duct Section J:.:.EJ 15 has th*e largest number of. '*. ' '<cells, and would represent the worst_ case for. the analysis .. ', ' . 2.) The cable information detail for Sedion E-E315 and th.eir circuit

• loading current is shown in Attachment A This section 1 O cells* ** .. . carrying *power cables'.*

These cells are represented in .UCTEMP . . . .

• computer program by file PALDUCE4.DAT.

The results indicate that* the maximum continuo'us:

conductor temperature is 78.8°C and is for ' * : 500MCM triplexed cable cc:frrying 261A full load current and installed.*

• in plastic conduit in cell A018. The UCTEMP output is inqluded in the calculation as Attachment B. . * * * * * *** * * * . ,: **3.) Fiie PAlDUCE5.DATis.

a modified:fiie of PALDUCE2,D}\T where ...

• cells A023 * & A024. cohta.iri triplexed SOOMCM .cables and all 5QO ** .. . .* ** . *

• MCM cables are carr}ting 267 A current* The *maximum continuous . * * *.:'

• conductor temperature is 89.9°C for 500MCM cable carrying 267 A full: . . load current and installed in celf A018. This file essentially establishes

.* * . * *.* 267 A ampacity for the 500MCM triplexed cabie installed in* Section* E..'. .* ... ::E315: The lJCTEMP outputis includec:f in the

• : .. ,. * .Attachment-C.

. * :. *. * .. * ..

• 4.). A review *of ampacity taples listed in IPCEA Pub: No.

.*. .

• 426 (pag*e 241 of Refere*nce IX.6) indicates that the'264A ampacity of * *,

• the 500MCM triplexed cable for 9 Circuits, 8 KV; 90°C conductor

• .. Refere ce/ *,. < .. ,* * .. . -.. -.* .*. -* ,. ' ' . ,*. *' ,* '*' . r ;; * * .r. .. . .

• *., .. : {. . . rf

• temperature, 2Q°C ambient earth, RHO of 90 100% LF

• .* * * ..... * . . . .. very c!osely with the calculated 267A ampacity for the 500MCM*: * ... -triplexed cable Installed in Se.ction E-E315. Jherefore, it is .conduded . * .. -., *.*that the worst case duct bank configuration results in .the ampacity .* '* . . ... -* .. : ... ":_. . : : .values for the 9".'Circuit.

duct *bank configuration.*

This. 9-circuit duct *. ' ' '. bank configuration.

will be used for e'valuating .the duct bank:ampacity*.

' .. : .. _* *: ... _,._* . fc;>r different cable,-sizes an.d temperature ratings. . ' . *.. **; . ' . . . . .. : . ' . . :.".!_ . . ..... . .... '* ,' . .. . . ..... . ...... :. . . . . : : 5:} Based the.

a.

listing for duct showr1 on .. * .. * : * :,. '

• drawing_s identified in Referenee IX.2 was. developed.

Included inthis' * *. list (See Attachment D) is a comparison between each cable's load .

• current with the cable ampacity listed in the IPCEA table identified in . Step 4. . "' . . . . . :* **' *. **.*. -... . ' ,. . . : ..... -*. , .. *: ';) ... ,** .. ,._ ..... * .. * -. "*-...>-. . -. . *.** ..

.... *.; . :.:* . '* .... *' ...

,_.;: .*

_-* . * \:::t:I Power * : * * . . . l'llWEIUlm

.. . . . PALISADES NUCLEAR PLANT* ANALYSIS CONTINUATION SHEET

• AUIUllU#'S NOfillrfJI Sheet ...i_ Rev # ._* ....... 1 _ -..... . * ... . Reference/Comment Attachment D indicates*

that some cables are

.100% of the . ... * . ICEA allqwable ampacity.

For these cables, a revi.ew of the duct ... *. *.configuration and cable datawas* perfom.ied.

If the arrangement of . '.the cells in a duct more closely matched another IPCEA table, then * * * * . *

• thaf table was used for* the cable ampacity.

The results of this review * *.

• is inCluded.

ih Attachment.

K. * * . , A review of Attachment K indicates that the 750MCM cable*s installed:

• in duct sectiqns and V-E315 are still identified potential

• overlqads.

• . * * * * * * * * * * * * * * . . 6.). Ducf Section N-E301 and V-E31_5 were then analyzed by modelling

• them in the. UCTEMP program. File PALDUCNt.DATi"epresents

_ . . section while'fiJe PALDUCV1.DAT represents.section ..

• E315. . . . . . . . . . . : *. *. file PALOUCN1 .DAT deveioped to. detemiine the *maximum ,_ . * *ampacitY that the 750 MCM cable could carry and still be* below the-. insulation rating of 90°C. The result is 399*Amps.

the_ UCTEMP . *:: **. *.* ou.tput is included as Attachment J *: * * * * * * ** * *** .File f>ALDUCV1.DATwa*s deve:loped to determ.ine the

• calculated temperature in the duct section V-E315 fodhe 750MCM : * .. * * . . ,: . cables; which is 111:1 °C when carryir19 full loacfcurrent of 427 A:. * :,.* ,, ** The rated continuous conductor temperature of the 750 MCM cables * * * * *: '.*** installed in *duct section is 85. 0 c .. * *The UCTEMP output' is included in * *. *i ,... the calculation as Attachment"E.

• _ * * * *

-

• . * * * * --':. * *. ;-* *-; .. .. ' ... ' . *' *. * .1; . . . : * .... 7.) From the table on page 240 oflPCEA, the *ampacitY #' 8 cable is . . * ** .... * .* ,* '._

• 45 Amps, and has a resistance of O.Q818 Ohms/.100ft (Referenee."':

• * :.* .. *:: 1x;10). .. °The* ampacity for cable sizes of#10, and #14 are. **: .. . . . * **calculated as. follows: * * * * * .* * * * .. *. -. . ' .. * ' -;. . . . . .. -*:* : -. .. : ...... '.

-*

.. ' -<* ...

• .*.. . .* .* '*: .. ,_ . . . . . . .. . -... *-. -*-: . -:-.... *,:.

• .,,.

  *. *-*: .. ...-----.* *-. ' -...... " . . : ... :. ;-... * * .. ' *. . *. ,, . '* . * . ' '; * ' . .. , . .. . . . * ... . -* .. . :,. .*-. " . . '* .. * *<--* * * ,. ' *.:....' * * -' : ... . . , . . .. > . -. ' ' .

Lo.ad Current IPCEA ... *_ ... * -.; .. *.'-. . > ** IAMP = Cable Ampacity for 90°C Conductor*

• . ._ .* * .. < -*" * * ... * ** * * :* RBAwG Resistance Value per Reference 1 O : *. '. . * : . .. , . -. * .. . Rx . * = Resistance Value of 90°C *Conductor* . .. .. : ... * *' ... : ' .. **. *' . * .... . ' ., *, -' .. -: .*. . . ***-: .. . ,* . ' . ...r: -..

• .,. -.. . . I .*' . ... .. '. * . . ' .. . . . . ' . . ... *.1 ' --f * *'

• <

• For 3 circuits per cell: .* . PALISADES NUCLEAR PLANT . -ANALYSIS CONTINUATION SHEET. 56 2*0.0818 = 44 A 0.130 *For £rcircuits pe( Cell: ** EA-ELEC-AMP-040 " "

Rev # __..1----"_

Reference/Comment . '*. -,* . ,*.* -t... . > " .. _ .. : .* . "112 = .*. . . . i'_ "1*. " . For 9 Circuits per Cell: -.. -: .,. . " .. -. .. . *-. ,*_.,, . 2 -: **'". ". :*-. 45 *0.081_8*.*

,;,, 2 aA .. " .0 .. 206 ... **:::.*:*

'* .. *:' **-. \ .. . * ... . " .*. ( ... .. , :' -,. ' ........... *

• L* * * * . ** '.1.-' -*.* ' ..... ..... -.. . .* . * .. ".'. *: _, ' '.-: . ... _.:*., *::_ .. .-..... .. . ... -:., '** *, , . 110 = .. 482*0.0010

= 38A 0.130 "-., . . . . : *.* .. *** .. ; . *, ** .. -....... ' *.* .* .. * . .. . _:_: '" . :.l .. " .. ; **.* . *'*' ;.....:* .i* . .. . . -.. .. -< -.. _-' .. -.... * -. :* .. : *-* ... * . . 2. . . -* . ... > * .. f ... 45 *0.0818. = 22 A * .* .-0.328. .. . . : -... :** . ' .. *.* .* ' ..... ; . . .* 'l:* ,:.;_: . ", -,* .... ' .. : .. _ ... -: .. :..: .>:,** " . .. ** '. .. .. **. ' . ' -.*. -,::: .r .. : . .... -* ... ..-.,. . \ . . '"'** .. , .. *--.. ,.:***. :.. . ... ... -:* " 'The cable arilpacity will be derated as required Attachm.erit H to: . account for multiple power cables and power cables routed. in a ceil with control . ., , * -. * *. .. ... * * .. * * * ** .. .* * " '

• J *** \. .. ...... ' ' ' *. --. . *. '.;.. ** .... .. . ., .. ,,-. . .. . ..... ....... -. .... . . . . ....... . . q ... . ':.;:

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

____ .. ** l' ..:. ': : . . : : . . ....... ".* {

--'.* . --. --PALI.SADES NUCLEAR

... EA-ELEC-AMP-040.

ANALYSIS CONTINUATION.SHEEr. . Sheet _JL:. Rev #*___._1_ . *' _Reference/Comment

... p -.. , ** VII. CONCLUSIQNS

• ' .. * )-. . * .. 1.) The calculatfon has indicated that the cable ampacity'forthe 750 . *. MCM cables installed in duct section N-E301 is 399 Amps .. The * * *-: *

• _.

• cables _are carrying 401 Amps. This small margin. over the allowable

• insignificant and. the ca_bles are deemed acceptable.* . . * . ._ : .* . :: 2.) The calculation has indicate.d that the of the 750MCM **

• cables installed

• in duct section V-E315 is 111. t°C when carrying the * * *.

• fdll load current of 427 A. The rated continuou

.. s conductor temperature

• of the' 750 MCM cables installed in duct section V-E315 is 85 °C ... * . . . . *-. . --.. ... The analysis for these 750MCM cables (cable feeding Bus 1A via the ** startup transformer 1-1) has been_performed (Reference IX.9) ... .. 3.) The, calculation has verified that the Power Cables installed in other. . <<* .. :: duct banks (included.

in Attachment

• o&K and represented.

by ducts ; other than Sections N-E-301 and

") are suitable for their: circuit .. * . * .* ." . .' ..... *loading.

conditiori(s) without their continuous temperature*

-.. * * ** * *".*rating.;

• . .*. * * . -* * ** -.;**-* *.-l .* -* VIII. ,

• RECOMMENDATION

.* . . -. -_.,* -,.. **-*'. * ... IX. * ...

REFERENCES:

.. * . .. .-*-:' '* .. : .* .. .. ._:-. 1.) Palisades Calculations:

". ._ " .. ,:--: .. * * -/: .... ' .... ... . ' . . . . " ... : .. >_::.*:_*::

...

54,*_.;

• _. * :*: * * "

Revision 28 . * * .

,: 1 >* *. E-315, Revision 14 . .

• E-806,_ Revision 18 * * :_ *. *,_ .. " :: . E-807, Revis!ori 16 . . . . * *

• E-815, . . .... . *.,; .* .. ; -:.* ... -., *-,. *.** 1 . -, -... ..... -,.;_ -.. , . . . . ..... -. .._* . .* ' ' . . -..... * . **.:,*-:-.

.:"* * *; I. -* .. . *. .,.... ... ) **: ,:* :* *. .... *. .. -*-'," . . :. ' .... . . .._ __ E42, Sht 80; Revision*

1. ** E42, Sht 81, Revision 2 :. * ... E42, Sht 82; Revision 4

• E42, *sht 84, Revision 3 Sht 85, Revision 1 *.' :* *-. . :. . . -. ' ' '* .* .*.: :' "--. .. .. . *.: . *.* ---. .. 'I"*: *.: *.'!* .-.*' ...... : --.... * ... -* :' . -. .. ** .r ... ---

.. _ ... *-*, -.* . *,. .. *.* .. * .. . *,,_. . ... -.. -. *._: .... -*:*_.* .. .........

_ ..... ,-... .. *.-'. . .... -* . " L-------------

...... -r*: .... -' . . ,*. .** ,,.*. .. . . *. **--:'*" .. ,..*;, *; . ..;.

PALISAo'ES NUCLEAR PLANT .. .

.. ANALYSIS CONTINUATION SHEET Sheet 1 0 Rev # __._]_

• 1 --* . IX.* ' REEERENCES'.'(continued) . .. *. 3:) Cable lnformati'c:m_

Details fo.r* Duct Section E (AttachmentA)

• 4.) *Sargent & Lundy Underground c.able (UCTEMP) Program No. PC 03.7.083 -1.0 0 * :* -"5.). Cable l_nformation for other Duct Sections (Attachme_ilt D) * *_ * : . :*** .. .' ***. ;. . . , .. *. 6.) IPCEA Pub._ No .. P-46-426, "Power Cable Ampacities, Volume 1 ..:

• Copper Ccmductors;" Pages 238, 240 & (J\ttachmenf F) ..

• 7.) *Cable Data (Attachment G): .. * , Sections C-315, H:-315, S04 ahd S35 . . * . *:.*Section V-E315, 175 H75 * .. '.

• Replacement per:

.. ****. *) :-.... ,_: . -.. *. *--*:_ . . 8.) Am.pacity d_era_ting to account.f9r the in the ... insfrumentation/control cable mass occupying the cell with the power :

• cable and multiple .. power_ cables (Attachment H): * -*:-.. *' '.* *.** ,. *'-.. <. . ;*: -., _:_**,*-*.* . . . ..... ' ..... :.**. :\ ,,:: . . ,* .... ...... :,:**--. .. . . . '* . *.. . . . . . -:* .*.**.* . ., -. . ._* -.... , *:_:;

,*.. "' .. * .. -... **. > ' . . . .. . ,: ;

-.. *. '. * .. . *.:,*. "' .. __ ?, _*. i *** ' . *.r . .. : ... <* '* . **: } : ..... . : . * .. *. .**; . . . *"" ... . *. . : . *. >* *.:: .,*: * .. . ; ...... .. ... -*. . .... .**; '***. .. .. * '.' *** ',> .._.; *:'". ;-r : 'l." * * ' ***.* .. *.* ., * ... ., . *" ' *'* .. ****. .* ... _ ... . . ' *-* , . '.,..*-. . -. . . , .... '* ..* .-... , '.:-:. ** . .. \' .. . . . . ..... . . . .. : .. I . . .-.;,*_' .... * .. ... * . ..:. .-.. : .... * ** ... . *.*". . * . ., ..... . . ' .. .. : .... *" . * .... _ f *,, i':J .. . . ** ** ! *-** *** ' ,_**.* * ..

.. , 1 .... :* * .**!' " ** ... *.* . . . <',..--. :. :--i . .. ' . . . ; : . . -.. -

.., "'-J

\':!::I l'llWUlllM-

-.. *P.ALISADES NUCLEAR PLANT

• EA-ELEC-AMP-046 . ANALYSIS CONTINUATION SHEET * .. . . -. *,_ .. Sheet 1 l Rev*# __._1 _ .* '*... ..:':* X.' .

• ArtACHMENTs*

• .

• A.. Cable and Full load Current For Duct Section E . .,. . -. B. *UCTEMP Output for F.il_e PALPUCE2.DA

r. * . *c. _ UCTEMP Output for File PALDUCES.DAT . -. . . . . -. . . . ' . . D: . cable Information and Fulllo'ad Current For other Duct Sections .*. * .. E UCTEMP:Output for.File.PALDUCV1.DAT.

• F;*. IPCEA Pub. No .. P-46-426 "Power Cable Ampacities, Volume : .. -.-. * ... _ Copper Conductors," Pages 238, .240 & : 241. *. * ::* .. * ** * * . ; .. ; . . -. ,. ' . '" . . . . ' . . . . . : *. -*. __ .... * : .* G.

• Cable Code $04,

• S35, T75 .and H75 . . . . *.: -_Data for -1 OOOMCM. Cable replaced per SC-aa:.019

• .*

• Load data for miscellaneous circuits * * * * : *. **-' : -. : .. * -:,** . : H.-**Analysis for determining*

the. derating factor due* fo

.. .-: instrumen_tation power cab!es in_ the same * * .* * * * -:.** * ,* -raceway:; . ;_ *,._ ... * .... :_ : I.* Sargent& Lundy Standard 'ESA-1.02, Rev. 04-14-93 . ... . . . . ;"";. ... . . ,* . ., .. .*,, ' .-. . J. *.* UCTEMP Outp.ut for File PALDUCN1

• . '*. . ,, ..... ... . . * . K ... Updated Cable-Sections With a Percent of ICEA ... _ *._ * <.

• Greater than 100% -... , *. . * : . * ." -. * *. " -*.; .: .. *. ,. ' *, ', ,. *, . '" . . . ' , . :. . . _ .. ; ,,,. ".. . *, ---.... -,*.; "'. :***:* _.,., . . . ., ,* * ... . \ L

• l.istin*g_

of Powe_r Cables Load Cl.Jrrents for'_Cables in Ducts -. *-. :,.**... . "\,' ._ .. . .. .. Supporting,-Data for Ducts With Insulation Rating

• • --.. than _90°C. :*{ .. * :*;;.**:_< . . .. .. . . * *

• _._-_. ,. , *':' * * ... ::: : ,_* .. :. *-:-*.-, ...

--.... --*.* ..... * .... _: . : .,**. *._ ... , --. : . *.;**.** ,;_ *. .. . .:*. '":' .* .. ,._' *: .. -. . * .:: ... * . . -. -**. ,... ". '. ). . ; . .. ' **-... "* ' . . . ... *' *. .. --... :**. *--.* .. ... ' .. \,'* .* -.. ; : . '; . ..... ' . *.* *.'. ... *.*. .**,:': . *.*:: *** ... *:.* . ;* .* ... . *. -:*.* ' *. :, . . *' .. . *.*' -* . -.t *** .. ' . *. * .. .:: .. :*:-* -.. , , .. ' .., I ' ' ... :,*** . ... -.. * * .. -;: . . .** .. . . *: .* .... -.-* .... * .. * . . .. . . : -* .. : -*.' . . -* *. *' ' . .. . . .. -. ', ;',._ . ..:**** . .*' I . i : ,:. . . ...... << . . ,* . ... *,.' . .. *:::

• .;*.. . ..

• • • ... '-. *,. . :*. \* ... *-' **..,. :.** ATTACHMENT H :..! ii* -EA-ELEC-AMP-040 Page 1 of The purpose of this attachment is to *provide.

the metho.dology for*: .* . determining the ampacity derating factor for conduits carrying both power and control cables in a conduit..:..

.. . : .' .... > ' . *,. '* .. * .. .; *, ., *.:.* .-:. * .... . .. , . -.... * ' .... < . :' .. ..... * .... * '-". ,.* .. . :** .J-.. . ': -.,, -. ' ... *'-*.*. ;,. '.; .*.-. -:*: . >-:,... . . -*11 .,** .-. d*

• ,

' ....... -._ *' '* * ..... _ *., .:* ;._ .,_*_ . -::_. -. **< *: *, . . .,.* *.*,-;: ** ... *: . '* . .. * .< . .-.. ;.-. _, .*_ * .. *;.._ ., ***',--* ... .... :; * .. *: ..

..... EA-ELEC-AMP-040 Attaciiment H * 'Page 1 2::of u .*:;* *::i .!. * * : * , .... Purpose'--

.* . ... * .. ..

section is: to factors for conduits with power * * * .. ahd.control cables iti a single cond'1it.

The conduit is assumed to have 1, 2, 3, or 4

• cabl.es. in adclition, _the oonduit is a5sumed to contain control c.:ables that generate negligible .

but whicl.1 act as. a "blanket*

around the power cables: . : . . . .

Methodology

• *' _.* . . The derating calculation considers both 3 II and 5 II trade siZe containirig three phaSe . circuits of single'conduaor, #2 AWG, 600 volt cables .. The ampacity for a_.single ciraiit with . no ables iii the is 130 amperes aecording.to AIEE I IPCEA P-46-426. . * .. the conductor temperature of containing 1, 2, 3, and 4 circuits.

iri 3 ii and . :

• 1, 2, andJ circuits in a 5 11 conduit plw sufficient 2 conductot"#t4*

AWG control eables to fill ., ... "* . *: . . * *.,.-*:* *. 40% of the condu,it cross sectional area of a 3 II conduit are calculated using a Mathcad sheet. . .. * . . The load current in.thepower cables is then adjusted by hand to achieve rated conductor

• . :*. *. . . ' * .-*,

• temperanire of90°C. The ampacity then the ampacity of the c.;ables iri the te8t_=: * . *"conduit divided by the*nmninal 9f 130

• * * *.* * * . * .. ** : _:. .. ' .. : .*.: .. ..

• sheet:used for-the 1s of the sheet used for.*:.;-. ' .. ' .-... -** the calculation of -the of cables in a conduit in.

air. The principle

• . *. _* * *:l . . niodifieations is that the load c'1rrents

'of the poy,rer cables are multiplied by a factor F A : . * * * . * ..... '. ._,. . Mathcad global define stateiµent iS used.so that.Fcuirait ean be set near where the . ' . * . . . temperature is displayed for . . . * . , , * * :*1 . *. . . : .. *' ::, .. ? _*.Witlun:

the C:abies in the" divided The

.* . ;

i . _ -* '. :that are \lriloaded are considered "co.ld*, and are assUn1ed to surround other cables; The* * . * : * * ;.* ** < ' ** *... group .P,f cables that gerierates the maximw:n amount of per .urut are the __

'*. :. . . ... . . ,. .

• and a:re in the cenrer. of.all of the cables. Gables that are neither "hot* or "cola*. .-* .. ::-* '* .... --:ire considered*"warm**cables.

The "warm* cables are located between an:d*"hot*

.. * .... : . * ... .: .. cables.

of.the.nature of the test_ ca5es in the data only_ contains :* *. *-. . *.; ... ""hot 9 and cables.}°.

... . . . . . . . . . '

-. . .. . : .* . . . . _.*: : . . .*' -: ... :=.:' -.:: . . .. :1: *r" :.;. :. : ,, ' * * .. ;. , * * * * . . * * : The trade.-sk is. entered into .the Mathcad sheet.

inside and of ..... ,... * . *: * * ..*. * .:_.:-.. the con'.duit can then be determined by a lookup table in the sheet The rondµctor . ... . . , . . ;*; .. , ' .*,. :. > . ' number of cables in the group, number of conductors iii' each cable, eable*

cal:>le . .. . . )* * . '* '.<<,* *area, and load cwTent for the is .read from a data* file.. The conductor of the * . <: *. ., * , ***: *. *

• fi:om the fue usllig another look-up table. The. . . * . . . . sheet then calculates the heat generated by each cable Nen,.the sheet divides the heaf ..

• .. * *:*.; generated by each cable group by the area occupied _by each.able group to give the heat* . . . . . -*., *. intensity.for the cable group. In-order to facilitate later

am1_y, is set ..... -. .. , ... ,:. . :'. . : ._ ... .:. . ... *.* . . ' . '-: .. . .. ... * * .. .*" :: *.* : .... ; *. *. *:' . . *. . '! *. -* .. *' * ... *. . '

..

Attachment H . . * <:* ;;:i :::; **: Page a ot .. *::: *;;* .::. :::: .. up.'Eacli member *of Hot_ Flag is set. to 0 if cable group generates

O.o heat ('"cold*), i if the. * *

• cable generates.

heat but' does not have the greatest heat inten8ity of all the groups in the **conduit

('"warm*), and 2.if the cable group has.the hiibest heat intensity in the crinduit.

('"hot*).

_ .*. . : * . . . . Using Hot_ Flag to classify the cable groups; the calcuhites ocC:upied the '"cold*,_ "warm*, and '"hot* cables. Sinee circUlar will have spaces between them when they are . . . . .*" . bundled together, *the area assume that the cables are to allowfor this . . * * . :aClditional area when there is more than one cable in the group. Based on the_:area*

occupied by * .. * ... each layer,. the of the layer Can then be calcUlated. . . . . . . . The heat generated by the '"warm* and "hot 9 layers is The intensity of . the _two layel'S' is then calculated using the areas of the layers. Also; the total heat generated m . ;; . . . *e cm1duit is determined.

AU of the heat are based on eable. oonductot

--* -* _ . .

' ...

of 90°C, operating temperature of the.cable conductors

... : :fhe .the a;nduit can then-*be heat

_.* . :* outer.surface by and radiation is first written as a function of the Surface : . * .. . temperafure.

equatioJ:lS*

can be solved iterativdy fo find the surface temperariire at. . * *

• which the total heat dissipated in the equals the heat generated The -. : .**

itself can be basecl on the oonduit a.' .. * . _.** : hollow ' . * *' * . ** .. . .*:* *, ... : . . *. : . . .. . . * "-. * ,The temperature the ... eable layer has two oolllponents*.

The temperafure

• * * * .. drop .¢aused by the flow of heat from the '"hot* cables inside is by treating the * :* * *. * . . ....... a_hollow eylinder.*An additional temperature drop is by the heat . : . ... generated widiin the '"warm* layer. This temperature drop is formula similar**

• .. * .

• to .that given in Section 2-8 of Holman, except the iS fitted to a initial *. * * *, .... '. *. cq.ndition to account for the hollo\v core of thiS layet< :* . . . .. . . . . . . .

.. "*"**. . . .. . : . . . . *., .. ** , ... : .. The the '"hot*

Hohlloµi's Eqtiation 2-26. . , * . The temperature is then _the surface temperattire of µie 'conduit plus the sum of the *

• drops described aboye. : * * . . . * * * ... :. .. . ._ . ... . . "* . '*.* .. * ... ..... ' .. . . *. ::-. .. *:' *.* *.J. ':.*. * , > ** * * ,J * . ' . ,* *:** '*.*. "* .**. ** ..... _* .. : . : *:. . .:.:**** . .. ' ._. _.., .:c . . *. :. * . . . " .; * .....

. . . . .. .

and Conclusions

.*-The restilt5 of the cases are as follows: * *Nuinberof

>*:*--Conduit* Mailicid File Power Circuits Nominal Size Name * -plc40s.mcd 1 '* * .p 1.c40l.mcd

_ * : *.

• p2c40s.mcd EA-ELEC-AMP-040

,, ,

H. . ,.,. . __ ,

4 of * ' , *

• Ain:pacity

-* .Multiplier

'* . 0.915 . ' 0.955

\ .. . :. .... -, .. , . * ... .... ' ' .

'*2

• p2c401.mcd.

• .. .* 3. ;_ ... * }>3C:4os.mcd . . ... :J 5*. , p3c401.nicd

' . . . : . 4. . p4c40s:mcd

• ' .. *. 0.722 . *o.584 0.615*--*. 0.519' ' -* ... . . *' ... -' *-: *' ... ,_ . .. . --,' . . . . .. -: -* * .. -. .. . _*.

conduit ampaclfy . < ..

• 1: ..

The mpacity mUltipliei:

for 4 power cables will be applied to oondwts .: * * :. I

.: ... * .*

• .. < ... _ .* * * * * ... ': .. . * -: J

• It is unlikely:

that all .of the eables in ::die conduit be lOaded to the fumt * . <

• * --. . * * . 1-: * .* *

• of their ampacity due to load diversity aiid the selection of cables with ami>adty : . . -* ** ' ,f . . . higher than the rated load current based on available cable sizeS . ' .. . ," .**** . ' ... "": -:-.** ....... _ .*.. *.. .. * .. _**. . *. . . . ' .. ' . : .. I

• -:" The .resuiu.of the stop.tests Carried lli .March-1.9971ndicated w_ays .. *

• _ I* : : * . were relatively

cool, that die operating oonditions in noi:mal * .. : . I: .. :*:* .* -station operation ate than indicated by. the calculations.*

.' .:_ . " * .. ..* ':-. . ' '*. .. ' . . * ......

• J. 3. * .* -..

area by.power*

tlte. avaibble £cir the

• I. ' blanket of oontrol cables *. *, . ' ' ',, ...... ', .. *.* ' . ' . -" .. ' ' . ---------... ' -.* ***" *-

• _ *AniJ;acity

• : *

.. * -of Power

'.° ' * ; . : -: ,_ .. , ' -* .. , * .... .. *-. .. **cll'CW*" *_ts*:;* ....... , .... __ .* --; * * * ,. ' -.I * . -.-.*"':." .. 1--------+-----41

._. ".i-,. . * . ' ' .. .r. ._.* .. .. 91%* **"** . 2 .. 69%* *.3 **58% . ... *.

'.:.' . s2%'---* . --.. -' ... . . . , -_ ..... :: ':! ** -,_.*.*. . , *,-*':" . *,'; . .... *; .. , * .. *.; ..... . . . . . . : .. . *.-.. . ****.* .. "' .. ' .. -.. :. --' *. : :.: ... _ .--... .. * .. *.**** '-... * . . . . .. " . .. '" -.. -. .. .; ': *. *.: ..... :_ ....... , *-.

• w .-*-. --. : " . . .. ' .: ,* -*. ,. .. " ' .* ... . . : ..... .... *-* . . ,_* ,* *"* ,... *. ... . . ,*.

• *** .... '*: : -:* ; ,,: *; . : ,.,r Attachment H

• u age* 5:iof :::;-. * .

• References

• • . .;.* -. 2.-3 .. ' . _,_ :;* * ... ' .. ..

198LHeat Tokyo: McGraw-HiUKogakusha, Ltd. :

. . . . .

J. H. and McGrath, M. H. 1957. The Calculation of the Temperature*

Rlse and Load Capabiliti.of Cable System$. AiEE Transactions on Power.: *-:. **.'.

and Systems. 76 (October):

• *

• Insulated Power Cable EngineerS Association and InsUlatec:lConductor8.

of the AIEE AiEE S-135-1 I IPCEA Publication P-46-426,Power CabieAmpadties, Volume York: American Institute of Electrical Engin.eers.

• * *-.. * ****:* *_ .,. *' :. --.. * :_,. .,.*,, ;-*_. . -. :* ..... **: ., ; .. _ .. _.:. ... -. .. ::_. -.. ' ....... . :*-' . . .. * .. -. :,*.* . . . . . ::---' ... * ... * *.r .. :; . .-. .. * ... "* .***. .. ; .: :; .*. '.j,* --> *** --. ""' . ::-... '. '. .. /' '*'*. ',\ -*, *I *,,-.. '. < *-\ . .-*>... -*.* . -.. .... .: . '* : .... *. ; .. *. ****'.';.

... .. .. ,.**': ...... !.. . ./ ** * * * :-.. *** .... _. **:: .:;_ .... .. *: .*.* * . .!.** ... , . -**. .: :*. .*-* !'* * ,. ; . ' . . . ..* ;:: ... --*.l ' ,* ' . .. . .. . . ..: . * ... ;.. . ,.-*-* *.*:* ... : .. . ' . . : .. . ... . : . 1'..,.* '; .

. ,* *. . .. -**,. .. . ' **...:. EA-ELEC:-AMP-040 Attachment H . .. u **::; :::, ....

• Page; 24 'bf . ..* , .: ...... . **.** Te5t Case: Two Power in Conduit,.40%

Coid Fili.-:. p2c40s.mcd Conduit Data * * ..

• Coiiduit_TradC_Size Hn Enter Cable Data .. .

• 2: :.:1 ::: .. . . *-* . *'. .. . ,*. ..* . . * *-.. .-. : .... ..** . *. **: * .. ,; . *'"*. . : :.*-..... _.* .* ::i rows( Cable* data) oat&._ size.= 2 . :. Number of cable groups in the-data ; . ':-° .***. ***

• I *1.'" ** .. Data_i.ndex

= 0. L. (bata.::_size.:.

l)" .... * * ** ., * ** -** . . . . *.

• ... . ; . .. Thermal

_.: < * . .. * * * ** * * ' ** * *

• 1 * * .:*

= 400:*

1 Cabie (StOip.e)*

.. .. = SOO*K*cm*watf Insulation . . . * * * * * * *-* * ' * .. , * * * ** H * ,. ' ':* o .P *Jacket

• p cond .= 2.08_-K*cm*w:itt" 1 Conduit conducrivity

• J: * * *. . ** ' . * * * . . . (S&L Standard ESA-105) . . AiltbientTe_mperature :. * * : *1..* * :: ... ' ., ' ., . . . *-**.:. '* -. '* .:.**. *****:: .. *.* . * . -* .. MlsceUaneoU&

Constilms:*

... . : ..... . -* . : ,, ... :. ,*.* . ' ---* ** *',:*. '!J'!'* ** -.: : . :_.

coriStan1c> , . * . . . ....... , i . . ... *2 " a::

• watt*ai.

IC :,_: . *_.;_ .;._ .. : ... : ' .. -.. ; ... * . . . .. . . .. . .

• . page 301-.* -. :.,. *.*. ** *.*.** . .. . .-.!.*"' . *,, .... , __ ._._* .. . *-* *** ...

• 8 o._33 . gc>nduit emissivity . . . ;. *. *: **, :.... .

. . Conversion factor between de9rees

• and KeMn * . ,,_: .. : ..... **:_ :. ***._, " . : *'*' .. * .*. "' . ... *-::; .* . CtoK := 273.lS*K.

T anib_'=_TambC .-: . T am1J

• K ,:; . . -*,**. .. -. _. . . -. . . -. . . \..* . *-* . .. . * .. ** *,,*.' .. * .. * . -. . . . .. .. -* !'" *' ** *.-. . '

' *. *--:.; '*: *"-:. "_ .. ... -....... . . *, . ..

---, <,.: . ' . , -. ; **" ' .. .'*'* *.'r :;,. ,..( ... d *. . . :; .:* '.: .,.,; '{:"? -, ,** . *,:. ... ; :, . ... .... :.*:.*; ... . : ;,

• -') *.*. ,,. *,.,. *"' -EA-ELEC-AMP-040*

Attachment H

,,:: < . Conduit Data * *.*: ,. ..... * -*.-.. ,-.:, . ***:* *

• .* <_ * *** : lnnerand_Outer Oiameters, Thermal ConduCtMtY.

and Emissivity CondUit_Siz.Cs

= 0.375 0.493 0.675 0.5. 0.622 0.840 0. 75 0.824 1.050 1.00 1.049 1.315 1.2S .. 1.380 1.660 1.SO 1.610. 1.900 : ...

Reference:

ANSI cso.1-1966

• Note: The inside diameters for conduits built to ANSI * *

• CSQ.1-1983 a_nd later are someWhat different.

The 1966 version of the standard was selected based on the

• commericaLoperating date of Palisades Station 2.00 2.067 2.375 * *in .. 2.50 . 2.469 2,875 3.00 3,068 .3.500 3.SO 3.548 *. 4.000 4.00 4.026 4.500 s:oo. S.041 S.S63 6.00 6.06S* 6.62S dcaDdi

<0> '.Conduit_sizes

<t >

.. dcondo.'=

.:0; d:cimdo =3'.5 . " . .* -. . ' '*. ,,* . ' .. , .. ... --_. ... *>:.* . : . . ,.*" .... . * \ *... . ".'.

• -. *".:.*. . ' . . . : .. --.. . ' . *, .. *. ...._. *:-:'.*. .. <. .. *. *. -*:1* *. .. .. .. . i .. ' .... . *-. --*: .; " '.*** . :;* ..... --.. * .. . :<*.:*. **., *'w . . * . \ ... :;:,.* .. . ' . .. .. : "'--. ,* ' *'.: . *' ,, : .... '.* .. -:* . ... . "* , .. ..-". ,* .* *.-'. *'*:. .*-*-. . * .. -.... * .. * ... * . -....; ' , ... .. ' . . .. . * '*" . r' :*"" . *:. ' .. -. .. -. . * .'"'t . *. ':. . .; * .. :.* . : :*: *-....... *, ... , . .*. ,._ ,-' , ... *** . *:-.. _".._, . *-, . .. -: . .. ,.*. . . ' .... .)_; ' .. ....... *.

. .. . *. : .. . -. EA-ELEC-AMP-040 Attachment H .:i 6.f:_,* *-"*..,.,.;.,-*

... )*--Lookup Table for. Conduetor Resistances at 90°C (See Sargent.&

Lundy* standard ESA-102) .. ' *--.. . . . . . . . .. *. '* *2 . 4* 6 *. 8* 9* : 12. 14. . 16 110.

• 210 250 . . .. 300* '* ' --. ....... . _ . *-.* -310. 350* 400 *410. soo 600. 1SO: 1922 1925 . . ** ... ..... = :.* 0.0161 0.0203 0.0324 0.0513 ... 0.0818 . 0.103. 0.130. 0.206 0.328' 0.523 0.0128 . 0.00542 0.00453 0.00804 0.00389 0.00341 0.00639 " 0.00175 0.00231 0.00187. 0.108 '* . . . 0:211. l' *. . i:* .. .. * .. *. *-* .. '* i* ::,:: " : . * ... * . *.* ' . *-.. : . *. . .. ., . . ,. : . . *-. <O> ' '. *: . . . J , * * :' ... <2>: . . Cable_size

= Cable_data.

= Cable_data

... Nlirnber_conductors

= Cable_data

-.. :._, .'* .. , *... -. . . . ... . ,.._ ... * * .:c* . " .... *.. . .. . . <5> . .. . ...

• C&bie _ clia Cabie 1* load. :=. Cable_ data

• F amp .. ' \ ..

1*_in;2.1.o) *. .. . . .. " . . . -.. * . . . . -:: ::* ' *.*. .. : **, *,_ , .... * . -.

.. *_. :-_. **:-. ' ... ... .. * , . .--. . , I :_:

_, * .. * '. .. :* ::*; *'.. .*.--. . . '*1 ::,* ... ; .*. * ... ::..**-*. ' *:-i . . .. . _. .. , .. -* ... *, * .. :: **=*-:****.

,\_'"; .; .. ::-*:**: *..:t .-_,'; . .. . . .* ,,

.: . :: . -. . ... 'c, ** " .*.* .. . :** . , ... ' .. *'* : .** ..' . ,.*. -.tf *.

• > .

... . .. . .. . . :***-.-.-.. -.'".*.,_., . .* . . . . .

I. * ( . . ( .

• .. . *. . Q . . * ). \) . . . . *. densitv .

• Temi)_ := reverse\c5ort augnient

• . * , * , I *. . . . ft.1 .. 2 I. *. * * . * *. watt*

• 1I1 * . -. *. -. . . -.

Temp 0 , 0 * * * . Diameters of Layers

• Ho(index*.,;o

..

• Q.1 __ . * *. * . . w:;uoittyHot_index . . * .. . *. : .. * . Hot f1ag now has values of: . 0 for unloaded eables 1 for "Wann* cables . . . . .. . . 2 for the.hottest cable in the. conduit Diameter of Hottest Cable * =°6 * *

• ;* H . * .. . ;* ***pag$ 21 *or** * ** ' *'** ,:*, . r *. '. *.* A .= l.5.*in 2 .*. . .. -.. . : *: *, .. . ..... . .... : . . . . . . .

• . . . . . *2* A hotf := *.;. (Cable _dUtHot_UidCX) . . ... . . . . . .

.. 2 . ; . -. ' -: . .. . . .. r. -. :: . .. * . a . * ... d **

I ,2*JA :-.d L...) . d hot= 1382 ** ...

diameter of

• layer'**

-. " . ' ' .

size-. I) . * * . . * *. . * ' *. . . ... *. . * : * .,**. :-

... ***::** .. -*j*O* .... **.* *.* . .. . .... * ...... , .*-,.. : : . -.; . . .. -**. . . -_ ....... " -..._* :. *, ... ** .. *. :.:.:..-,:.

-. *.* .. . -*, *. !":. . . J J d-..=1382-iri

• • • . * ..* ', -* .. '**-.* *. _::::::.

cable layer . '_ . '<> . . -.. . -** ... ( <(Data.sizc.:.1)*:.*

.*. . . .. ' _>,,. .. , ... ; *_. .. , AIX>ld:= * * *

*. ;', ... * *.**.; ..... . . , *:; . ;., ..... -.. ..... *. : .. ;* .. ' . .. ' -.** .. *:*. .... *_, . .. : .. * ,_* .* * .. *,*. , ... . x . . .. , .. *'.'; . '-,* ;-. .. * .... '.T ... *, .,-: . *.**_, *-.:*. '. .... _.;..;, .. .* . . *, . ....... !/ *.: ***---: ' . *,

' --.. ::* * .. : .. i,.l EA-ELEC-AM P-040 Attachment H .::. 1:i=>a 9 9* 2a 'at;;' ** *, (.d condi)2 .. . Acond := 1t* .-2-. (Data slz.c -t) . *c bl d. *)2 --* 1 . . ; a e 1a. -2 . . Ap0wei>= * . . I 2-* J ,O*in*. Apc>wer=L178*in 2 .. . j=O. _-. . . --> _ --__ -

AWarm£ .* _ _ *: :A hate .. * . -_ Ac0ldC . .. *

. '** -Fill u := . --.

• Fill_power u := ........,..,--

Fill cold u := _

• Fill warm u *= -. --A coild -. --* ----Acond _ * --. J\ccmd ---. . . . . :.* *., Heat generated by hot cables_ . -'. .

• Q . . *: . -. . , .

-. l :* Q hot =9.743,*watt*tf -*. . *, -:i Heat generated by "Wann* cables -' --* * -*--_ . . '.*** (Data size -I) * '::. . . __ . _. 2:'. *

• . . *. -. .. . . .. *-. . . . ... ' . :;. * .. .;....;...., '*; ---. -,-_. . .-_. .-----:: . -. --. -. -... -. .; . *** Q Q_waiiti:

.. ;

• F, .Q total . * *:. .. * .. * . .-. . ....::,, .. :*. ,.._ .. . . -: '* .--.** . . . .. . _.-. . . . .. --; .. _ .-.' ..... : .... _.* -, *.,.,. .. *i* **-.. ... *** * .... **.' -. ' *' ... *-*:: ..... : ... *-:_ .. *-. _* . ., : . * . .. .... **. . ... * .. :: -:;* . : .. * ....... '*.' : . .. :: ... .;;,_ ..... ... ..._. -' ,_.*._* .. . . .. -' -** :.* .. . /:: .. -. * ..... ;"; ' -:*." ;* . .: ,* *::" .. ' . . ... .. ;: . '* . . *.* .,-" -'.". ...... ,.*. *:.-....... .': .. -. .. -,/. ...* -:

EA-ELEC-AMP-040 . tH .. .. .... , .. Attachme,n", ., .. i .. I *::_,.* =::* , __ , .. ,. 'z9*!ot-' . * ..

• _ . Page. ___ _ : *. : .. : ... : . _ *calculate*

the Surface Temperature of Wrapped Assembly . . *:'" ******.

-.* . '. . .' . ' -. '. ... ....... .*.::. : ; ; . Note: In order to solve the energy balance equations, the equations for the heat . dissipated by the wrapped assembly will be written* as functions of the surface *temperature.

The area of the Wrapped condui_t per unit length is equal to ., : . 2C times the diameter of the wrapped assembly. . Heat O!Ssipated by Radiation

• Qr(11 := x*d cOndo.'e

-T amb 4) . Heat by ConveCtion l . . . . . . .

• _ ... 5* . . l ..

• 4. . . .... . Q

• • it*d** *. *.l'T:.T.

b.) . c . . . . : . d ... -.conuo . . am .** .. * .....* :.* '.**' .*-: .. ;, *-., . . *-'1 ; . -:,.. . l .** .. .,. ., ' . lritfal guess for' iterative*.

solution_

of the surface temperatUre of the wrapped conduit * .... * .. *.* . :: --**-... ** **. !. .:. "T' * .. . . . *-. . *.** . . ;_, *,, '* Heat dis8ipated by radia.tiori and COnVection' must _equal heat Qenerated by cables. * * .. ' -* .. .

,:_*.** . *'. ;...: .* T :. := Find(T ... )-'.-: -' --. . . guess *>: ; **. .. : .. -. ., . -* .. --_ ..* -;.. *:-_:..* ,.,_,:*-::.:.. . . -. -*** .. .,_ , r * . * . -----. t. __ : ,-.. . . -. -:., :*. -,.r* -.. -* ... : -. -

.. . .. . "!.*-* ;* *-* ..... -TComio-CtoK

• K °C *Surface temperature otthe-: . conduit:.** . >-*-.:-._ -.:*::,-.--

' ' ... .... ..' *. *.'"' ;"-....

-.-... -.. ' >-* *: --. . ' *:* . 1::. *. --* *.**.., -' .. : . .1 *;* .. .i ... .: ..

• j *;'. *-. ' ._,_.-*.-.'*

'* . ;,* ...* . 'I_: : .**. -.. *** ... ' *:*:; ' ..

J * .* EA-ELEC-AMP-040

-. Attachment H

• U ** . ,-., Pag1f30 d{ . . u '?

• ___

-. . -*Temperature Drop thrOugh the Conduit .-. . _ .. -1* , (dconao)

• aT cond := -*p cond* ln *Q total 2*K . dcondi See Equation 2"8 of Holman *at ccmd =0.014 *K . . .--.

.* . : -* *;. TCaadi . T*mperature:ofthe inside wall of the conduit .* . TCaacJi 0 e. ... . . . . . *,. . **-* -. Temperature Drop. thrOugh Uie *,;Jr Gap the Conduit_ .* .. _._ ... cOnstants for Neher-McGrath Formuta for in the Conduit AJr Gap * * '. .... -* . A,-32Kft -i. *. :: . * * *watt *ID* .** . . ..... .... B',:= 0:19*.in .* . . -.* . :.. . *. . . . :: A' -.. .. . -. .I. ** . at :_= B' +-d. .. . *Q total * . Equation 41A of Neher-McGrath

. . . . cold . **, ... .*J -. .. -.' -.-.. ...... ,. ... .. --.. '

.;:

aT I: ..

'.' ::-:'.-;,*

.\' :: -: ._-, ... . -. "). -. "* . .,_*. . *:. ... * . *-*-.. .

at the outsige surface cable mas&:::. . . ... -. --*: . *. ' -. . * .. ** .. * .--* :*: * ..

• .< * * . _ *. T mi.as .-.CtoK = 66:869 * (°C) :-*-**. . . .. -* TemperatiJfe drop tt1J"ough the "cold" cables* .. * -.. : ...

.. _aT = 12.90:Z*K . : ... *. -. 2*K dwann . . -.... ****. *.. . . . . .. , ',* T cold..:. CtoK =79.776*'1:.C: . . .. -. ' ,' ** .. . : .... . .... ;:'* .. .-*.: .-.. . ':* . -. *-*-.;*. * ..... --,_* ,-.< ..... -. . '* .. _ : r,;** -*-... ( ..\ ,.* . . . ...... -.. -.* . , .. . :" ... . ; .. *:-* . .

" .'.** 'femperature drop through the "warm" cables* k. . . . 1 . Pmass EA-ELEC-AMP-:040

• Attachm$nt;H;*

'> ;:. * *. ;*: .Page 31 of __ .. ** .. <. : *. -Pm&ss_ * (*dwarm_ ***i** ) AT wann*=

-.-.--+: * .. . * * . . *.: * * * --**In --. . . . . . . 2:Jt. dhot . . . . . 4 ktrulSS .* .. 2 kmass 2 . dhot . . . .. . ..

• *. T T Cold -t: at warm . T warm -CtoK ;,;._79.776

• K°C. _.J ..... " .. .

Rise ttvough the cableti . . Q dasity .... _ *** .A-d AT110t:.=---------. 4*kma1s ..

• Hoiman, Equation t-26 '* . . -,, . '. . AT hot= IOJ7S *K ... -. . . . .i

... -. .. .* ... '. . ..:-. : ..... :.'. -.. ._ .... ..) ,. . . ,.: . ..-. : *.** :... ... *, **. *. *' *:-'. . . ,, I. * : . 6 '"-:" . .-./: .* '.* . . :.: . ..... ,J .... .,,. .*. *" . t. ,, ...* -: -***: . . -.. ** ..... ..

..... : . -.; .. *.. : * ..... *.*.* .,... __ . .** .. -_ .-.... *! -. .' . . ... ,' *, **. ,*_. ,_. .. * . * ... *--. .-. ... " _* .** t .. **.!i . . . *.* :.: : -... , .. . ... ,. :*. ' .. .:* :-.i . *., ., *-.:.*

.. . ..:.* ,.* .,_._ ',*_ .*-:. 1' . ( O . ' " . .* **. . . . *.* . 1 : 1 * *.'** .Q tObu =9.743 t Q cab.I.* . . * =9 743 ** . . tt-1* .. . . °Hat_inda:. . watt* .... -...1* .. ... .... . --.-:. . " ' ... . . -. .... . *. ....

**. *.::-,. *,*:.. *,*** .. * . ... .... -.. ... . " 2 .14 '**i 6 o.s 0 *130 I\ ,j 28 2 0.37 0 0 . 0 /. Fil(U: =O.S67

• Fill.J>Ower-'u

=o'.l59 Fill:_:warin

_ u = o *

=0.407 " :; EA-ELEC-AMP-040 Attachment*

t'.f i:\ ;* :::, Page 32 of* ____ .;. . :i** *.:** -:, . ' .. * ..

• _ .. ,... *:_.; --;:-... *:. . *.:* .. * ... * .. , .... ;:_* ... _.. .... -;. ,.;,

_ _. ... ,-.' .. "\ ,..:*