ML20096D894
| ML20096D894 | |
| Person / Time | |
|---|---|
| Site: | Brunswick  |
| Issue date: | 07/30/1984 |
| From: | Nguyen H CAROLINA POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML20096D877 | List: |
| References | |
| TAR-NT-124, NUDOCS 8409060338 | |
| Download: ML20096D894 (20) | |
Text
- . . .-
CAROLINA POWER & LIGHT COMPANY l
NUCLEAR ENGINEERING & LICENSING DEPARTMENT 4
ADDENDUM TO LOW VOLTAGE (208/120 VOLT)
ELECTRICAL DISTRIBUTION SYSTEM STUDY FOR BRUNSWICK STEAM ELECTRIC PLANT
- UNITS NO.1 & 2 TAR NT-124 lsR5888R"Jeejj;
/
' CAROLINA- POWER & LIGHT COMPANY
< - NUCLEAR ENGINEERING & LICENSING DEPARTMENI ADDENDUM TO LOW VOLT /.GE'(208/120 VOLT)
ELECTRICAL DISTRIBUTION SYSTEM STUDY FOR BRUNSWICK SIEAM ELECTRIC PLANI UNITS 1 AND '2 .
TAR NT-124 Safety Classification: Nuclear Safety-Related Seismic Classification: N/A Rev. Prepared by/ Verified by/ Proj. Eng./ Princ. Eng./ Pages
~
No. Date Date Date Date . Affected o 4~W
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3 TABLE OF CONTENTS
_[ age -
-1.0; J Pu rpose ' 1 2.0: -Summary,of Results 1 3.0 Method'of Calculation .1 2 ,
4.0 Discussion of Results 1 5.0; , Conclusions
- 3
. 6.0 - ' References 3 -
- 7.0 APPENDIX A. Al
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- 1.0. Purpose 1This calculation serves as an addendum to the Low Voltage (208/120. volt) Electrical Distribution System Study,' Revision 1,
.. July 27, 1984," conducted'by Duke Power. Company (Reference 6.1).
The purpose of:this addendum is to perform a more detailed
~
analysis of ;the three (3) 120 volt safety-related circuits which were identified as having .a potential undervoltage problem under a postulated loss of coolant accident (LOCA).
2.0 Summary of Results
' The Low Voltage Electrical Distribution Study (Reference 6.~1) #
identified three (3) safety-related circuits which did not meet the voltage regulation performance criteria under a
( . postulated degraded voltage condition following a LOCA ("LOCA--
- Run"). The load data used in the calculation (References 6.2 and 6.3) included some. generic conservative . assumptions to provide the ." worst case" results for all circuits analyzed.
C Each' circuit was represented as one single lumped load with
. impedance of the longest feeder length in the circuit. A detailed analysis of each of the three (3) circuits (see Appendix A) revealed that all voltage criteria are met when the above. referenced conservatisms are removed. A summary of the results is chown in Table 1, Page 4.
4 3.0 Method of _ Calculation EA detailed voltage calculation was performed for each of the three (3) circuits. In each circuit, a voltage calculation was done for the component that has the~ lowest terminal volt-age (i.e., the largest load at the far and of the circuit).
4.0 Discussion of Results r-The three- (3) circuits identified as having potential under-l voltage problems during a LOCA-Run condition aret
,' -1. ~ Circuit 12, Panel 2D
- 2. Circuit 18, Panel 1AB-TB 3.. Circuit 16, Panel 2AB-TB An' explanation of each circuit analyzed follows:
t 1
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P h
L 4.1 _
Circuit 12, Panel 2D 1-This circuit from Reference 6.1 was assumed as a single lumped load with feeder size, length, load, and terminal voltage as follows: j
~&
Feeder Size: #12 7 Length: 1961 ft. F Load: 240 VA @ 0.5 PF (LAG) .-
Load Terminal Voltage: 0.8929 p.u.
This circuit actually consists of several components which are +
described in Figure 3 on Page A4. The detailed voltage ,
calculation for this circuit based on the actual circuit =
arrangement described on Pages A4, A5, and A6 revealed that , _f~
the component with the lowest voltage is 20/c with a terminal .t voltage of 0.9376 p.u. Since this voltage is above the minimum m required voltage of 0.90 p.u., no modifications are required. ;
4.2 circuit 18, Panel 1AB-TB -
This circuit from Reference 6.1 was assumed as a single lumped i load with feeder size, length, load, and terminal voltage as i "
follows:
Feeder Size: #12 =
Lengthi, Load:
908 ft.
882 VA @ 0.5 PF (LAG)
]
Load Terminal Voltage: 0.8398 p.u. _
This circuit actually consists of several loads which are described in Figure 5 on ? age A7. The detailed voltage calculation for this circuit based on the actual circuit 9 arrangement described in Pages A7, A8, and A9 revealed that the component with the lowest voltage is Contactor #4 with a -
terminal voltage of 0.9450 p.u. Since this voltage is above ~_-
~t he minimum required voltage of 0.90 p.u., no modifications are required. -
4.3 Circuit 16 of Panel 2AB-TB This circuit from Reference 6.1 was assumed as a single lumped -
load with feeder size, length, load, and terminal voltage as -
follows:
Feeder size: #12 Length: 648 ft.
Load 882 VA @ 0.5 PF (LAG) -
Load Terminal Voltage: 0.8732 p.u. -
a 4 \ _
\ N 2 :=
A, :
Y
l Circuit 16 of Panel 2AB-TB actually consista of several loads which are described in Figure 7 on Page A10. The detailed calculation based on the actual arrangement as desetibed on Pages A10, All, and A12 revealed that the component with the lowest voltage is Contactor #3 with a terminal voltage of 0.9460 p.u. Since this voltage is above the minimum required voltage of 0.90 p.u., no modifications are required.
5.0
Conclusions:
The detailed analysis of each of the three (3) circuits identi-fled as having a potential undervoltage problem showed that _
the 208/120 VAC safety system maintains adequate voltage during LOCA-Run and no modifications are required.
~
6.0- References 6.1 Carolina Power & Light Company, Brunswick Steam Electric Plant --
Units 1 & 2 Low Voltage (208/120 volt) Electrical Distribution System Study, Revision 1, July 27,1984.
6.2 UE&C Calculation 7453-127-3-ED00-01, Rev. 1. Date: July 24, 1984.
6.3 UE&C Calculation 745 3-227-3-ED00-01, Rev. 1. Date: July 24, 1984.
6.4 Drawing LL-9046-G.208, Rev. 2.
6.5 Drawing LL-LL-9046-G.209, Rev. 6.
6.6 Drawing LL-90046-E.15, Rev. O.
6.7 Drawing LL-90046-E.16, Rev. O.
6.8 Drawing 9527-F-9052, Rev. O.
6.9 . Drawing 9527-F-90052, Rev. 1.
3
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- aS 7.0 APPENDIX A SUPPLEMENTAL CALCULATIONS TO 208/120 VOLT STUDY l
Al i
Ymputedby: Date: Calculation ID:
}g, p % 'f/j3fgq CAROLINA POWER'& LIGHT COMPANT unz4- e 74 -f Csk D e: NUCLEAR PLANT ENGINEERING DEPARMENT Ps. A2.o@2, Rev.O TAR No.: NY-lM File: ENT-12 4 - AN 5513 Project
Title:
gsef. elec. piST. SYSTeH STUDY Calculation
Title:
SVTPL6NFcNTAL CALCULATICAIS 7o 208/12O v0Li~ dTUDy Status: Prelim. O Final @ Void C Grek M mgl e- p % lectd cucuLY ccm be. rep.sau&clces 4knom h g% below :
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% = h+ &le fadsv fyschncu - Re, + fx,e hz= faudval Gdev &npc/c>ncu - Q ,j he 71w gallow jum,sclan suvv maly-Hwvol e orhalekk.
K. = v- = em #; t co. o sc Alt svnc)e phcnc (cacts On -litis ealetelaker, luwc a tctieciscly
(%)q'U6Yolls,
%.twJws y Jiu. jervuela. (A.1)cavn hc. refantecI M K. = ?s. -
n iJ te (A.1)
L whtw E. _ leccc( On VA 8 acme. potoe&fachy .
C u :
b7tj fjgafh $
CAROLIdA POWER'& LIGHT COMPANY h-2 1F C e te* NUCLEAR PLANT ENGINEERING DEPARTMENT Pg. Abf A/3 Rev. O i ON SM TAR No.: kf-124 File: B/VT- /24-A AJ-569 3 Project
Title:
65&P- elec Tisr, sysr. srz/py Calculation
Title:
SOPPLEMENTA L cA Lc ULATicNS 70 zog/120 VOLT STUD 7 Status: Prelim. O Final @ Void Q vu - v., L Q.3)
E -t k.+E 2 c
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Computed by: Date: Calculation ID: %
g pptyt, J.i3_g4 CAROLINA POWER'& LICHT COMPANY fvTlI4 - f~ F C, t k Da e: NUCLEAR PLANT ENGINEERING DEPARTENT Pg. At of Af2., Rev. O TAR No.: EIT-;24 File: BNT -124- AA;- ssq. A .
[
Project
Title:
BsEP- Elec, tes7. <&g M . C4 %
Calculation
Title:
SVPPLEAICluTAL CALCULATIOMS TO 2C)8'/12.OVOLT GTUD7 Stctus: Prelim. O Final Q Void Q CIA'CUITl2 OF PANEL 2D As y Prj u w n w G.s ,-lk s c ucwlt c m k nyremhcl o!> K folla v) : -
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Calculation ID:
f CAROLINA POWER'& LICHT COMPANY p7/zq - E-74 p ChackedJby: Date: NUCLEAR PLANT ENGINEERING DEPARTMENT (p .s.pukks 91If% Pg. A$ of AIL Rev. O CALCULATION SHEET fAR No.: NT- 124 File: gyv7-124- A A; s643 Project
Title:
3SEP- Elec. Ds5T, %f st. sbc6y C21culation
Title:
SuPPLEMc tJTnt cA tcoLAT10tos to 2cg/iz.ovoc7 SToo y Status: Prelim. O Final Q Void Q
\loLThCx E AT ' TERM I t# L CA 6 YU- GT (Y')
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C y: Date: Calculation ID:
7,j3_g CAROLINA POWER'& LIGHT COMPANY NT/ 2 4 - E F Chtcked'by: Date: NUCLEAR PLANT ENGINEERING DEPARTMENT
'N 'S Pg. j)p of A(Z. Rev. O
' TAR No.: AJ T- 124 b CALCULATION SHEET File: BNT-f 2 4 - A Al- S593 Project
Title:
BSEP. elec . p,g. sysy. smp y Calculation
Title:
SVPPEt4ENTI)L. CALCULATIONS TD zoT/12OVOLT GTUDY Status: Prelim. O Final O Void C vo'-TAC T E AT COAf PONENT 20/C TUR Alt NAL (, U.).
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.6, Computed by: Date: Calculation ID:
.Ho @ Wue 719 % CAROLINA POWER '& LIGHT COMPAW VTl2 4 - E F c e: NUCLEAR PLANT ENGINEERING DEPARTMENT p g,4 / ofAl2, Rev.O CALCULATION SHEET l'AR No. : p t -p 4 File: jylvT-124- AA>-sW3 Project
Title:
BSEP- elec. pig, sysr, sTu o y Calculation
Title:
SO?Pt_cM cNTA L CAccutAT1 CMS TO 2oy tzovoLT STUD Y Status: Prelim. O Final G Void O
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p g pcyg g.u 7-13 y - CAROLINA POWER'& LIGHT COMPANY pnz4 - g_yg - p e d'by D e' NUCLEAR PLANT ENGINEERING DEPARTMENT Ps. Ag ofAl1 Rev. O T
i TAR.No.: NT-W4 File: g/v7-/2 4-AN-564 3 Pr: ject
Title:
ggsp g ,p,37, sys7; gof Cc1culation
Title:
SV PPL6M ENTA L GALCotATIONS TO 2_cg/izo VOLT STU DY Ststus: Prelim. O Final Q Void O VOLTACr6 AT CONTROt.L ER CA BIN c= T f44F { t/e )
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Computed by: Date: Calculation ID:
&cNpW 7-lpS4 CAROLINA POWER'& LIGHT COMPANY g7jyo , g- 74 r hite d .
NUCLEAR PLANT ENGINEERING DEPARTMENT Pg.AqofA(Z, Rev.O M No.* $M f CALCULATION SHEET Pile: BMT-i24- A M- 6943 Project
Title:
BS EP- Elec . 'pt sr. y / 5 7; gT U D '/
Calculation
Title:
so PFLENCNT/t' CALC vcATICA;5 TD 2.os'//Zo VOLT STDDT Status: Prelim. O Final Q Void Q sloLTACT6 AT CON TPC.TO R. 44 Te RMIMA t. [ V. )
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Computed by: Date: Calculation ID:
A Myteu 7 89 CAROLINA POWER'& LIGHT COMPANY /v7:24 - E - 74,- F h*].M g/fpff " te: NUCLEAR PLANT ENGINEERING DEPARTMST PS . Aloof 17,,. Rev. O
/ CALCULATION SHEET TAR No.: Air-i24 File: BNT-124 -AN, s 64 3 Project
Title:
B SEP - Elec . Test. qst. ACh Calculation
Title:
SU PPEMENT71 L cAccutATlo/VS To zcF/ /2OVOLT STU D y' Status: Prelim. O Final Q Void
. C/RCUIT % OF PA NE L 2A B-TB As p we c,i ca/ca/a#cn,-//tJs cluuct os gmfcc/ as go//ows.
PANEL AAB - TB CIRC f 01T - 16
~
u _ti i2. - 64 8 FC W = 0 37 3.'1 P. V.
9 S1,2.V A @ O. 5 PF FIGUR E G
-do ctch.tcti cixcuit e n entwTff CircwCf/6 /2vne/ AAB- 78 isdC fol/q M NE l. 9 A O - TS , ct Rc.ut T-lG
<r- -n 9 - 14 0 FC M6AT TR A CJ MT TEJC M t JV A L Box w ec.
c-- 4 9 - 2 + FG couTR CL L C R CP6t N ET H4 F -
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Ir@L f 2 < cca L 3 4 ccf L LORRchi g wf;Re sur cugtENT, Tb TA L Lo A D : 4$ 220,fVM Vir,o n & 7
Co puted by: Date: Calculation ID:
g /h qugg '7,g, gg, CAROLINA POWER'& LIGHT COMPANY Amyg_ g p se de te* NUCLEAR PLANT ENGINEERING DEPAR N Pg.All of A n'L. Rev. O
/
I TAR No.: pr-lz4 File: SAT (24- A U - S s 43 Project
Title:
SSEP- glec. pisp Stjgy, dzcchj Calculation
Title:
SU PPEM EfVTAr t CA LCULATIONS TO 2OS/ / 2 Dv0L.T STU D Y Status: Prelim. O Final Q Void Q vocmCTC AT coNTR CtLER cAe t HET H4F '
( VC. ]
FeepER di cl -t40 PT -y di (1 .24 Fr.f LOAo : 822 YA Q PF = 0 S*D L lAlr ) ,
1 Vs :
0.'1634 f.v. ( y Befw co 6. I )
1 E c.o G 1 T 'c : (o,124 004j 0,CD448 fg 1. 64 0. 2M 9 +j O.oOD 2c, G cl0"C = 0,r\524jO.0013 Q1 @ 0 0"C = Sci G dot gre,o fwrnala _ A. .s l II C ' jg. 9943l@ : Z4'? 72 g/2. 925'$
Q , (\le$r F82 / - 6f * =
~
ferrn /t<%IL f.4 VL -
Vs -
- YRc +o Rc2 1 h) 't (. Yc + h2.+ Yc ) ' o 0.9 b 5 A I/J 'l94 3 ko.at SR + 0 AIR + 74977-fr[o.CC73 t 0 0075 + 12,4f 74)2.
Vc = %. .- o. (l 4 sif P.u.
i A NOTC
- SINCG ilC1 w:tRE CB6LE IMPGDANCE IS NOT AVAILA SL5, p lO WERG ChacE IMPCDANCE, is UstD t ha cA LCVLATIO N TD SE CCNSERVATLV6.
Computed by:
"z"f*_Eh_"j p Date:
Hrv l%W on, 7-s-g4 CAROLINA POWER'& LIGHT COMPANY NUCLEAR PLANT ENGINEERING DEPARTMENT h*f ,q p gg -
CALCULATION SHEET T'AR No.: dT-aq /
File: SNT-124-Ap_ ssq 3 Project
Title:
tseP- Elec. 'DIST. SysT. Srupy Calculation
Title:
GOPFLcnicNTA L cAcct>LATtous to 2.os/szovor-T SToDy Stat.us : Prelim. O Final @ Void O
\1OLTAC26 AT COMTACTOR k3 TERMtNA L (_ Ve )
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