ML20028B390
| ML20028B390 | |
| Person / Time | |
|---|---|
| Site: | Brunswick  |
| Issue date: | 11/23/1982 |
| From: | Zimmerman S CAROLINA POWER & LIGHT CO. |
| To: | Vassallo D Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8211300342 | |
| Download: ML20028B390 (84) | |
Text
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Carolina Power & Light Company NOV 2 31982 Office of Nuclear Reactor Regulation ATTN:
Mr. D. B. Vassallo, Chief Operating Reactors Branch No. 2 United States Nuclear Regulatory Commission Washington, D.C.
20555 BRUNSWICK STEAM ELECTRIC PLANT, UNIT NOS. 1 AND 2 DOCKET NOS. 50-325 AND 50-324 LICENSE NOS. DPR-71 AND DPR-62 ADEQUACY OF STATION ELECTRIC DISTRIBUTION SYSTEMS VOLTAGES
Dear Mr. Vassallo:
By a letter to all licensees dated August 8, 1979 regarding Adequacy of Station Electric Distribution Systems Voltages, NRC provided Carolina I
Power & Light Company (CP&L) with guidance on. evaluating voltage drops.
In response to that letter and to Mr. T. A. Ipr olito's letter of August 16, 1979, CP&L provided submittals for the Brunswick Steam Electric Plant Unit Nos. I and 2 dated October 8, 1979; July 24, 1980; October 15, 1980; February 16, 1981; April 9, 1981; and March 2, 1982.
Carolina Power & Light Company's March 2,1982 submittal notified the Staff that further in-house review of the voltage drop study (our February 16, 1981 letter) and the site test voltage study (our April 9, 1981 letter) had identified certain discrepancies in the reports. Carolina Power & Light Company committed to provide any necessary revisions when our evaluation results were available. We have completed our evaluation and are herewith transmitting the following enclosures to the Staff:
1.
Revision clarifying CP&L's response dated July 24, 1980 to address an under-voltage balance of plant (BOP) relay which was not included in the original response (Enclosure 1).
2.
" Voltage Drop Study For 208/120 Volt Safety Related Loads",
Revision 2, dated March 23, 1982 (Enclosure 2).
3.
" Site Test Voltage Study", Revision 1, dated March 23, 1982 (Enclosure 3).
8211300342 821123 PDR ADOCK 05000324 saf r
P PDR Of v 411 Fayetteville Street
- P. O. Box 1551
- Raleigh, N. C. 27602 mun u t.:.nwmn. : - m' r m
Mr.
D. B. Vassallo /
We believe that these enclosures provide the necessary information and should allow the Staff to complete their review. However, if you should need any additional information, please contact us.
Yours very truly, 2*
- - - - - w S. R. Zimmerman Manager Licensing & Permits WRM/ mag (5727C3T6)
Enclosures cc:
Mr. D. O. Myers (NRC-BSEP)
Mr. J. P. O'Reilly ( NRC-RII)
Mr. J. A. Van Vliet (NRC) i
ENCLOSURE 1 RESPONSE TO NRC REQUEST DATED MAY 16, 1980 BP,UNSWICK STEAM ELECTRIC PLANT, UNIT NOS. 1 AND 2 NRC Request 4.
The NRC guidelines for voltage drop calculations, item 8, states that "The analysis should document the voltage setpoint and any inherent or adjustable (with nominal setting) time delay for relays which initiate or execute (1) automatic transfer of loads from one source to another; (2) automatic load shedding; or (3) automatic load sequencing." Please provide these settings.
CP&L Response 4.
The voltage relays requested are as.follows:
Relay Catalog No.
Setting Function a.
27/59S 12IAV53K1A 105V/ 83V a.
Load sheds all breakers l
(BOP - Bus)
(5.5 see when on its associated bus voltage drops to zero) b.
Trips its associated Feeder to Emergency Bus c.
Starts Diesel Generators b.
27/59U 12IAV53K1A 105V/83V a.
Load sheds all breakers (BOP - Bus)
(5.5 see when on its associated bus voltage drops to zero) b.
Trips its associated Feeder to Emergency Bus c.
Starts Diesel Generators c.
27 12IAV54FIA 82T Y L 2
a.
Opens master-slave (BOP - Bus)
(2 sec @ 0%)
breakers to associated Emergency Bus.
b.
Sheds all BOP bus loads.
d.
27-1 1211FA65D6911 Instantaneous a.
Permits sequential loading (BOP - Bus) of RHR and Core Spray Pumps during DBA b.
Permits bypass of sequential loading circuits if off-site power is available c.
Permits operation of Conventional Service Water Pumps if of f-site power is available
i BRUNSWICK UNITS NOS. 1 AND 2 i
Relay Catalog No.
Setting Function c.
27/59E 12IAV53K1A 105V/ 98V a.
Permits closure of diesel (E-Bus)
(5 secs @
generator breaker 70% V.
(1.5 secs @
b.
Load sheds all breakers 0% V.)
on its associated bus c.
Trips tie breakers f.
59D 12IAV51A1A 55V/1L a.
Permits closure of diesel (E-Bus)
(.25 see @
generator breaker 100% V.)
g.
27-1 12HFA65D69H Instantaneous a.
Starts sequential loading 27-2 12HFA65D69H Instantaneous b.
Permits bypass of sequential (E-Bus) loading circuits if off-site power is available 2 711S 12HGA17C63 Instantaneous a.
Starts its associated diesel (E-Bus) generator 27 DV ITE - 27D 106.5V/10 see a.
Isolates its associated (E-Bus) emergency bus from off-site distribution system when voltage is below 89.5%
I
ENCLOSURE 2 VOLTAGE DROP STUDY FOR 208/120 VOLT SAFETY RELATED LOADS REVISION 2. MARCII 23, 1982 l
REPORT ON VOLTAGE DROP STUDY FOR 208/120 VOLT' SAFETY RELATED LOADS FOR CAROLINA POWER & LIGHT COMPANY BRUNSWICK STEAM ELECTRIC PLANT UNIT NO. 2
~
BY T
UNITED ENGINEERS & CONSTRUCTORS INC.
REVISIONS Job Order No. 9527-089 Date: October 31, 1980 No.
Date Prep. By Chkd By Q/A Appr. By 1
2/25/81 k-b (28.1 kg e.9. &
2 3/23/82 O-Checked By:
'M 3
Q/A Review By:
M%
4 Approved By: 6. h. b=
Disc. Supv. Engr.
s j
CALC. No 9527-089-3-ED00-02-F Rev. 2
o
.4
/*
INDEX Paire No.
1.0 PURPOSE 1
2.0
SUMMARY
OF RESULTS 2
2.1 208 VOLT BUS VOLTAGE 2
2.2 WORST CASE VOLTAGE 3
R2 2.3 TAP SETTINGS 3
2.4 OPERATING VOLTAGE LIMITS 3&4 3.0 CRITERIA 4
4.0 DISCUSSION 5
4.1 Tap Settings 5
4.2 Allowable Load Voltage Range 5&6 4.3 Method of Analysis 6&7 5.0 DATA 8
5.1 480V System 8
5.2 Dis e-ibution Transformers 8
5.3 Distribution Transformers 8
5.4 Relay Coils 8
5.5 Solenoids 9
6.0 ASSUMPTIONS 10 '
7.0 REFERENCES
11 Appendix Al to A38
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CALC. NO 9527-089-3-ED00-02-F Rev. 2 i
1.O PURPOSE 1.1 This study is to review the voltages on various 208/120V Auxiliary Distribution Panels and the equipment connected to these panels to assure proper voltage at the terminals of each safety related load.
The distribution transformer tap settings were chosen to assure proper operation of the safety related equipment under conditions of an accident on one unit and a false accident signal on the other unit (2X LOCA).
DEFINITION 1.
2X LOCA:
Cases are those initiated by a Loss of Coolant Accident on Unit 2 rad a false LOCA signal from Unit 1, resulting in the running of both Units' ESS loads.
2.
SAT Light Load:
This represents the minimum auxiliary load with the plant shutdown and all auxiliary loads fed from the SAT.
i l
l l
l l
I-CALC. NO 9527-089-3-ED00-02-F Rev. 2 2.0
SUMMARY
'OF'RESULTS 2.1 208 VOLT BUS VOLTA 2 PANEL BASE MINIMUM VOLTAGE MtXIMUM VOLTAGE NAME VOLTA 2 2X LOCA RUN SAT LIGHT LOAD PER UNIT ACTUAL PER UNIT ACTUAL VOLTAE VOLTAGE VOLTAE VOLTAE UNIT 480
.8876 426 1.0813 519 SUB E7 MAIN DIST.
208
.8916 185 1.1017 229 PNL. 2E7 PNL. 2CA 480
.8677 417 1.0733 515 PNL. DGC 480
.8851 425 1.0807 519 PNL. 2A 208
.8911 185 1.1015 229 R2 PNL. 2C 208
.8915 185 1.1017 229 PNL. 32AB 208
.8911 185 1.1015 229 PNL. 32A 208
.8874 185 1.0999 229
~
PNL. 2ADG 208
.8854 184 1.1000
'229
' UNIT 480
.8803 423 1.0765 517 SUB E8 MAIN DIST.
208
.8916 185 1.0994 229 FNL. 2E8 l
PNL. 2CD 480
.E523 409 1.0650 511 PNL DGD 480
.8782 422 1.0761 517 PNL. 2B 208
.8913 185 1.0993 229 PNL. 2D 208
.8915 185 1.0994 229 PNL. 32B 208
.8701 181 1.0909 227 PNL. 2BDG 208
.8742 182 1.0940 228 i
CALC. NO 9527-089-3-ED00-02-F Rev. 2 -
2.2 WORST CASE VOLTAGE COIL OR SOLENOID TERMINALS R2 UNIT SUB. E7 UNIT SUB. E8 Actual Actual P.U. Voltage Voltare P.U, voltare Voltage Minimum Voltage 0.9235 106.2V 0.9026 103.8V R1 at 115V Base Maximum Voltage 1.1478 132V 1.1492 132.16V g3, at 115V Base 2.3 TAP SETTINGS Reconunended transformer high voltage tap settings are as follows:
TRANSFORMER NODE
,' TAP SETTINGS
~
b8 20V
/'-
(2
./
10 KVA, le GE8
(-2. 57.)
' ((' 2. 57.)
~
480 - 208/120V FJ7 ~~
GE7
~
-2 ; 37.)
-l' FJ6
(-2. 57.)
j 1
9 f
R2 2.4 OPERATING VOLTAGE LIMITS (Ref. 7.3) i Base P=r Unit
' Actual Case Bus
. Voltage voltage Volta g R2 232,068 **
SWYD 230,000 1.009 SAT LIGHT E7 480 1.0813 519 LOAD E8 480 1.0765 517-SWYD 230,000 0.9351 215,073
- 2X LOCA RUN E7 480 0.3876
~ 426 E8 480 0.8803 423 l
R2
- This operating voltage 1.imit does not exceed she minimum recommended voltage of 0.9550 per unit (219,655 volts) Listed -
R2 on page M5 of "oltage Drep Study (Ref. 7.3 2X LOCA Run, j
Reactor Building closed enling water pumps 2A and 2C start).
CALC. No 9527-089-3-ED00-02-F-Rav. 2,
m
.ei
, ~. _
4 R2 This. operating voltage limit is not below the maximum reconnended voltage of 1.009 per unit (232,068 Volts) listed in Section 2.1.2 of Voltage Drop Study (Ref. 7.3 SAT, Shutdown (Light Load)).
3.0 CRITERIA R2 3.1 Voltage at the load terminals should be maintained at 907. of rated
[
voltage during "2X LOCA Runs" condition and voltage at the load s
terminals should not exceed 1107. of rated voltage during " SAT Light Load" condition.
3.2 "2X LOCA Run" condition includes the following:
a.
Maximum running load b.
Minimum system voltage R2 c.
All transformer tolerances were
+7 7.
d.
All cable impedances were considered
,r 3.3
" SAT Light Load" condition includes the following:
Load on the buses were considered one half of "2X LOCA Run" load,
a.
b.
Maximum system voltage c.
All transformer tolerances were -7 %
d.
All cable impedances were considered CALC No. 9527-089-3-ED00-02-F Rev. 2 s-i i
't T
- 6
's e.
4.0 DISCUSSION 4.1 TAP SETTINGS The criteria used to choose transformer tap settings was to determine, for each set of tap settings, the voltage to fall in the limits of safe operation of all safety related equipment. To accomplish this, for each tap setting combination, voltage drop calculations were perfomed at SAT Light Load and 2X LOCA Run. The tap settings chosen
/
are those which most closely approach the desired voltage requirement.
t For the reconsnended tap settings, see Article 2.3.
4.2 ALLOWABLE IDAD VOLTAGE RANGE Unit substations were specified for 480V, power distribution panels for
~
208V and operating voltage for relay coils and solenoids are 90% -
RI 1107. 'of rated voltage (115V). The minimum pick up voltage of. coils and solenoids is 103.5V.
/
4.2.1 For 2X IDCA Run, the voltage drop between the Unit Substation and the power distribution pcnels is significant. The voltage drop between the distribution panel buses and terminals of relay coils, solenoidr, were deteruined for three parameters a.
Longe =~ length of cable run in 1 - O circuit b.
Maximum load in 1 - 6 circuit c.
Cable length 507., more than "a." and load above 507. of "b".
The voltage drop for SAT Light Load was determined for shortest length of cable run from the distribution panel buse.s to the terminals of relay coils and solenoids.
It was found that if the voltages at Unit Substation E7 is above.8876 p.u.
l (426 Volts) and E8 is above.8803 p.u. (423 Volts), then all
- 9
~5" CALC. No. 9527-089-3-ED00-02-F I
Rev. 2
.i
relay coils, solenoid and instrumentation voltages u 11 be above 907. of the rated Voltages.
Operation at voltages higher than the rated Voltage of coils would probably result in abnormal heating of coils and shorten their life span. The over voltage case could occur when a unit is shutdown.
When units are tripped the switchyard voltage is expected to drop to 9S7. (225,400 Volts) (Ref. 7.5).
This in turn improves the case of over voltage condition since this R1 study was based on switchyard voltage of 100.97. (232,070 Volts) when the unit is shutdown - SAT Light Load (Ref. 7.3).
4.2.2 Running loads on 480V system were taken from 480V Load Study (Ref. 7.2).
Running loads on 208/120V system were calculated based on actual loads from the drawings (Ref. 7.9).
4.3 METHOD OF ANALYSIS 4.3.1 The UE&C Computer Program ' VOLTS' was used to calculate bus voltages.
This program performs a GAUSS - SIEDAL load flow calculation, up to 25 buses can be modeled.
Transformer with tap changes can be represented.
Bus voltages are computed by the program to a tolerance of I.0001.
CALC. No 9527-089-3-ED00-02-F Rev. 2 6-
t 4.3.2 Per Unie values Calculations were performed using a per unit scheme with base values as follows:
SYSTEM BASE VOLTS BASE MVA 480V 480V 100 i
208V 208V 100 4.3.3 Impedances The transformer impedances are assumed.
Cable impedances were calculated based on actual length of cable run and cable size.
Impedance from 480V Unit Substation to 208V System were taken from report on Voltage Drop Study (Ref. 7.3).
Transformer impedances were combined with cable impedance t,
between two buses.
I i
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l CALC. NO 9527-089-3-ED00-02-F Rev. 2 __
5.0 DATA t
5.1 480V SYSTEM 480V Unit Substation Per Unit Voltages E7 2X LOCA Run
.8876 p.u.
P.F.
.85 SAT Light Load 1.0813 p.u.
P.F.
.85 E8 2X LOCA Run
.8803 p.u.
P.F.
.85 SAT Light Load 1.0765 p.u.
P.F.
.85 The above data was taken from the report on Voltage Drop Study (Raf. 7.3).
5.2 DISTRIBUTION TRANSFORMER Rated KVA - 150 KVA
.~
Nominal Impedance - 3.37. I 7.57. tolerance X/R Ratio - 2.5 Voltage Ratio - 480 - 208/120V 5.3 DISTRIBUTION TRANSFORMER Rated KVA - 10 KVA R1 Nominal Impedance - 27. t 7.57. tolerance X/R Ratio - 2 Voltage Ratio - 480 - 208/120V 5.4 RELAY COILS Type: CR2810 G.E.
Rated Voltage - 115V Frequency - 60 Hz VA - 130 Watts - 4.18 i
CALC. No 9527-089-3-ED00-02-F
5.5 SOLENOIDS Rated Voltage - 115V Wattage - 30 Watts Frequency - 60 Hz G
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G e
CALC. No 9527-089-3-ED00-02-F Rev. 2
,9,
6.0 ASSUMPTIONS m
r ~i 6.1 Th2 nominal impedance and X/R ratio of distribution transformer R1 150 KVA is 3.37 and 2.5 respectively.
6.2 The nominal impedance and X/R ratio of 19 - 10 KVA transformer is R1
- 27. and 2 respectively.
6.3 The power factor of power distribution panels is 0.85.
6.4 The wattage of solenoids is 30 watts.
e n-l e
r I
I r
[
CALC. NO 9527-089-3-ED00-02-F Rev. 2 O
7.0 REFERENCES
7.1 UE6C User Guide for Volts Program.
25 Bus Load Flow Analysis and Voltage Regulation Program, July 15, 1980.
7.2 480V Load Study for Carolina Power and Light Company, Brunswick Steam Electric Plant, Units Nos. 1 and 2, dated March 1, 1978, Revision 1.
7.3 Report on Voltage Drop Study for Carolina Power and Light Company, R1 Unit No. 2, dated December 15, 1980, Revision 2.
7.4 Industrial Power System Handbook - Beeman (McGraw Hill).
R1 7.5 CP&L letter to NRC Serial No. NO-80-1093 dated July 24, 1980.
I 7.6 9527-F-3005 Single Line Diagram 480V System Unit Substations 2E, 2F, E7, E8 and Common "D"
, s 7.7 9527-F-3053 Single Line Diagram 480V Systen MCC 2CA, 2CB, 2PA, 2PB and 2SA 7.8 9527-F-3057 Single Line Diagram l
480V System MCC DGA, DGB, DGC and DGD 7.9 9527-F-9331 Single Line Diagram Emergency Power System 120/208V Distribution Panels 39, 4 Wire 7.10 C.E. Catalog Control GEP 1260C 7.11 Solenoid ASCO Catalog No, 30.
t CALC. NO 9527-089-3-ED00-02-F Rev. 2 hl _. _ _ _
O e
e 9
9 e
e l
APPENDIX VOLTAGE DROP STUDY FOR CAROLINA POWER & LIGHT COMPANY BRUNSWICK STEAM ELECTRIC PIANT UNIT NO. 2 BY UNITED ENGINEERS & CONSTRUCTORS INC.
- a. o VOLTAGES AND IMPEDANCE DIAGRAMS D
CACL. No 9527-089-3-ED00-02-F Rev. 2 A1
VOLTAGE DROP STUDY APPENDIX r
2X LOCA RUN P.U. VOLTAGE ACTUAL BUS NAMES MINIMUM VOLTAGE 480V Unit Substation E7
.8876 426 208 Main Dist. PNL 2E7
.8916 185 480V PNL 2CA
.8677 417 480V PNL DGC
.8851 425 208 PNL 2A
.8911 185 208 PNL 2C
.8915 185 208 PNL 32AB
.8911 185 208 PNL 32A
.8874 185 208 PNL 2ADG
.8854 184 480V Unit Substation E8
.8803 423
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208V Nain Dist. PNL 2E8
.8916 185 480V PNL 2CD
.8523 409 480V PNL DGD
.8782 422 208 PNL 2B
.8913 185 208 PNL 2D
.8915 185 208 PNL 32B
.8701 181 208 PNL 2BDG
.8742 182 NOTE:
BASE VOLTAGES FOR ALL BUSES ARE THE RATED VOLTAGES SHOWN IN THE LEFI HAND COLUMN CALC. No 9527-089-3-ED00-02-F A2 Rev. 2
VOLTAGE DROP STUDY
^
APPENDIX SAT LIGHT LOAD P.U. VOLTAGE ACTUAL BUS NAMES MAXIMUM VOLTAGE 480V Unit Substation E7 1.0813 519 208 Main Dist. PNL 2E7 1.1017 229 480V PNL 2CA 1.0733 515 480V PNL DGC 1.0807 519 208V PNL 2A 1.1015 229 208V PNL 2C 1.1017 229 208V PNL 32AB 1.1015 229 208V PNL 32A 1.0999 229 208V PNL 2ADG 1.1000 229 480V Unit Substation E8 1.0765 517 208V Main Dis t.
PNL 2E8 1.0994 229 480V PNL 2CD 1.0650 511 480V PNL DGD 1.0761 517 208 PNL 2B 1.0993 229 208 PNL 2D 1.0994 229 208 PNL 32B 1.0909 227 208 PNL 2BDG 1.0940 228 NOTE: BASE VOLTAGES FOR ALL BUSES ARE THE RATED VOLTAGES SHOWN IN THE LEFI HAND COLUMN.
CALC. NO 9527-089-3-ED00-02-F A3
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A6 Rev. 2
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1 VOLTAGE PROP STUDY "ET' UNIT SUBSTAfloH 4 80V
{
n Z r = 15. 4 5 2 B Z=,9792 Z= 3.2 8 82 QJ 26.529
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00 Wew 9e l
O.,
A9 CALC. NO 9527-089-3-ED00 F Rev. 2 lm
~
VOLTAGE DFOF STUDY g'
LPPENDIX
~
TOTAL RUNNING LOAD NW AND MVAR UNIT SUBSTATION E7 POWER FACTOR
.85 2X LOCA RUN SAT LIGHT LOAD R2 BUS LOAD 607. of 2X LOCA RUN LOAD)
NO.
PNL. 2A-TB(H12) - 9.075 2
,PNL. 2A-RX(H09) - 3.125 0.024 0.0148 0.012 0.0074 PNL. 2AB-RX(H11) - 4.8 PNL. 2AB(H98)
- 6.98 3
PNL. 2CA (other load) 0.3218 0.1991 0.1594 0.0988 4
PNL. DGC (other load) 0.1593 0.0986 0.0435 0.027 5
PNL. 2A(H96) - 13.055 0.0131 0.008 0.0066 0.0041 6
PNL. 2C(HYp) - 3.157 0.0032 0.002 0.0016 0.001 7
PNL. 32AB(HXO) - 2.029 0.002 0.0013 0.001 0.0007 8
PNL. 32A(HW8) - 0.92 0.0009 0.0006 0.0005 0.0003 9
PNL. 2A-DG
- 8.525 0.0085 0.0053 0.0044 0.0028
- Refer ( 7.2)
Unit Substation E7, Shutdown Condition and LOCA Condition i
l CALC. m 9527-089-3-ED00-02-F Rev. 2 A10
~
VOLTAGE DROP STUDY APPENDIX
~.
TOTAL RUNNING LOAD MW AND MVAR UNIT SUBSTATION E8 POWER FACTOR
.85 2X LOCA RUN SAT LIGHT LOAD BUS LOAD (507. of 2X LOCA RUN LOAD)
R2 NO.
(IN KWS) g PNL. 2AB-TB(H12) - 2.09 2
PNL. 2B-RX(H19)
- 3.21 0.0108 0.0067 0.0054 0.0033 PNL. 2B-TB(H13)
- 5.535 3
PNL. 2CB (other loads) 0.3119 0.193 0.1601 0.0992 4
PNL. DGD (other loads) 0.1775 0.1098 0.0433 0.0269 5
PNL. 2B(H07) - 7.55 0.0076 0.0047 0.0038 0.0024 6
PNL. 2D(HY1) - 2,07 0.0021 0.0013 0.0011 0.0007 7
PNL. 32B(HW9) - 1.41 0.0014 0.0008 0.0007 0.0004 8
PNL. 2B-DG - 9.32 0.0093 0.0058 0.0048 0.0029
- Refer (7.2)
Unit Substation E8, Shutdown Condition and LOCA Condition l-CALC. No 9527-089-3-ED00-02-F Rev. 2 All
,l
,~
- j 4
VOLTAGE DROP STUDY APPENDIX A ONIT SUBSTATioM "ET' VOLTAGE DROP IN 1-CIRCulTS 2 X LOCA RUN l
C ASE (a.)
CASE (b)
C ASE (c)
PNL. 32 A (llWB)
PNL. 2A (He6)
PHL. 32 AB (HXD) l l-4/c *iz
- I-3/c f o
-i-3/c d o l
t 1 5 3 F T.
91 FT.
12 9 F T.
C K T. No. 22 U-CKT.No. 4 V CMT. No. 5 TT Z =o. 522 +j o.0115 Z 0-12 +) 0.00 4 Z =o 167tJo 0058 LOAD = 30 WATTS LOAD = 240 WATTS LOAD : 236 WATTS Eh 5P SAT LIGLIT LOAD
~s B PNL.'2C (HY6)
.i 1
y Y
l-4/C d12 g
y B2, FT.
Y g
CK1.No.20 V
?
8 Z 3.1694 t3.0037
- 3' A
LOAD - 25 WATTS
.m VOLTAGE DROP STUDY APPENDIX UNIT SUBSTATION E7 VOLTAGE DROP IN 1 - 0 CIRCUITS A
2X LOCA RUN LOAD' VOLTAE VOLTA 2 RESISTANCE REACTANCE (WATIS)
DROP AT TERMINALS Case (a)
R2 PNL. 32A(HW8) 0.522 0.0115 30 0.22V 106.589V CKT, NO. 22 Case (b)
R2 PNL. 2A(H06) 0.12 0.0041 240 0.42V 106.38V CKT. NO. 4 Case (c)
PNL. 32AB(EXD) 0.167 0.0058 238 0.6V 106.2V
{'
CKT. No. 5 B,
SAT LIGHT LOAD R2 PNL. 2C(HYO) 0.1694 0.0037 25 0.06V 132.2V CKT. NO. 22 CALCULATION:
Volt Drop = 2 I (R COS 9 + x Sin 9) l l-CALC No 9527-089-3-ED00-02-F Rev. 2 A13
O' t
VOLTAGE DROP STODY APPENDIX A
UNIT SUB STATION E B" VOLT AGE DR'oP IN 1-CIRCOITS
- 2. X LOCA RUN C ASE (a.')
CASE ( b)
C ASE (c)
PNL.28 D6 PNL. 2B (H %7)
PNL. ZB (14$7) t-2/c Fl2 l-3/c *lo l-2/C *l2 318 rT.
2 6,7 FT.
200 FT.
g C K r. No.2 2 V CKT.No.3 V CKT.No. 26V Z-o 65 71 +J o.o145 Z =0 346at5 0.oll%
Z =0 413 tJo.co912 LOAD - 100 WATTS LOAD - Goo WATTS LOAD - 120 WATT 5
[h
? E SAT tignTtoAo g
Put.2p (llY0 9
P=
l-4/C *l2
- 4 6 0 F T.
h I =o 17.39 t.i O.00273 LO AD - 30 WATTS
m h
8 VOLTAE DROP STUDY APPENDIX UNIT SUBSTATION E8 VOLTAGE DROP IN 1 - 0 CIRCUITS A
2X LOCA RUN LOAD VOLTAGE VOLTAGE RESISTANCE REACTANCE (WA'I"rS)
DROP AT TERMINALS Case (a)
R2 PNL 2B-DG 0.6571 0.0145 100 0.94V 104.13V CRT. NO. 22 Case (b)
PNL. 2B(H07) 0.3468 0.01196 600 3V 103.8V CKr. NO. 3 Case (c)
PNL 2B(H67) 0.413 0.00912 120 0.7V 106.1V
_f CKT. NO. 26 B,
SAT LIGHT LOAD PNL. 2D(HY1) 0.1239 0.00273 30 0.05V 132.16V CKT. NO. 21 e
s CA' C. NO 9527-089-3-ED00-02-F Rev. 2 A15
VOLTAGE DROP STUDY
~
APPENDIX UNIT SUBSTATION E7 IMPEDANCES FROM ' TO BUS BUS CABLE AND TRANSFORMER IMPEDANDES DESCRIPTION P.U. RESISTANCE P.U.
REACTANCE 2X LOCA SAT 2X LOCA SAT RUN LIGHT LOAD RUN LIGHT LOAD 1
2 Cable:
7.8950 7.8950 7.6345 7.6345 Transformer:
8.76 7.5578 21.9 18.8945 Total:
16.655 15.4528 29.53 26.529 1
3 Cable 3.2882 3.2882
.. 3.3229 3.3229 1
4 Cable 0.9792 0.9792 0.5347 0.5347 2.045 2
5 Cable 2.079 2.079 2.045 2
6 Cable 3.0043 3.0043 1.71 1.71 2
7 Cable 16.54 16.54 9.244 9.244 l.
3 8
Cable:
10.06 10.06 0.7595 0.7595 Cable:
23.80 23.80 3.928 3.928 Trans former: 96.15 82.73 192.3 165.46 Total:
130.01 116.59 196.98 170.1475 I
l 4
9 Cable:
9.722 9.722 1.605 1.605 i
Cable:
9.937 9.937 1.663 1.663 R1 Transformer:
96,15 82.73 192.3 165.46 R1 Total:
115.809 102.389 195.568 168.728 i
CALC. No 9527-089-3-ED00-02-F Rev. 2 A16
.. - _ ~
~
VOLTA 2 DROP STUDY APPENDIX l
UNIT SUBSTATION E8 IMPEDANCE.i R2 FROM TO l BUS BUS CABLE AND TRANSFORMER IMPEDANCES i
DESCRIPTION P.U.
RESISTANCE P.U.
REACTANCE i
RUN LIGHT LOAD RUN LIGHT LOAD 1
2 Cable:
13.0599 13.0599 12.322 12.322 j
Transformer:
8.76 7.5578 21.9 18.8 % 5 Total:
21.8199 20.6177 34.222 31.2165 1
3 Cable 4.6875 4.6875 4.7396 4.7396 1
4 Cable 0.612 0.612 0.6163 0.6163 2
5 Cable 2.475 2.475 2.38 2.38 2
6 Cable 3.928 3.928 2.218 2.218 1
i 3
7 Cable:
32.464 32.464 2.4565 2.4565 Cable:
11.901 11.901 1.987 1.987 i
j Transformer:
96.15
_82.73 192.3 165.46 Total:
140.515 127.095 196.7435 169.9035 4
8 Cable:
24.825 24.825 1.883 1.883 Cable:
9.983 9.983 1.663 1.663 R1 Transformer:
5 82.73 19 2.3 165.46 R1 Total:
1 30,958 117.538 195.846 169.006 l
CALC. NO 9527-089-3-ED00-02-F Rev. 2 A17 p.
,,,.-.,-_y-m.
y-, - - -g----
,--+--,,cs,.,e-
,,,,-w w.,,
VOLTAE DROP STUDY APPENDIX 4
IMPEDANCE CALCULATIONS AUXILIARY TRANSFORMERS BASE.
100 MVA 2X LOCA RUN IMPEDANCE WITH PERCENTAGE TOLERANCE R
X KVA IMPEDANCF t 7. 57.
X/R RATIO PER UNIT PER UNIT 150 3.3 3.54 2.5 8.76 21.9 g
10 2
2.15 2
96.15 192.3 SAT LIGHT LOAD 150 3.3 3.0525 2.5 7.5578 18.8945 R2 10 2
1.85 2
82.73 165.46 l
CALCULATIONS:
Z
=R
+x R.P. U. = Ohms x New KVA Old KVA r.
CALC. NO 9527-089-3-ED00-02-F Rev. 2 A18 n.r.
~.
e VOLTAGE DROP STUDY
~**
APPENDIX CABLE IMPEDANCES BASE HVA = 100 P.U.
Z 480V Cable - Z Ohms x '00 = Z Ohms x 434.02 1
.48L P.U.
Z 208V Cable = Z Ohms x 100 = Z Ohms x 2311
.2082 Resistance at 90 C = Resistance at 75"C x 234.5 + 90 = Rx 1.048 (234.5 + 75)
UNIT SUBSTATION E7 SIZE R/1000 Ft.
X/1000 Ft.
0F LENGTil in.n.
In tL.
R in X in R
X pg FROM TO CABLE (FEET)
(7.4)
(7.4)
.fl.
A P.U.
P.U.
Unit Sub Power 7.8950 7.6345 E7 Dist. PNL 2E7 PNL 2E7 PNL 2A 1-3/c 500 30
.0306
.0295
.0009 0.000885 2.079 2.045 R2 HCH E
4.O PNL 2E7 PNL 2C 1-3/c 250 23
.0573
.0322
.0013
.00074 3.0043 1.710 MCM 3
PNL 2E7 PNL 32AB 1-3/c 250 125
.0573
.0322
.00716
.004 16.54 9.244 N
HCH -
a E7 2CA 3.2882 3.3229 O
A 8
2CA Transf.
1-4/c #6 AWG 45
.516
.0391
.0232
.00175 10.06
.7595
?
8 A
SIZE R/1000 Ft.
X/1000 Ft.
OF LENGTil in A in _A.
R in X in R
X FR0ti TO CABLE (FEET) it
.O-P.U.
P.U.
Transf.
PNL 32A 1-4/c #2 AWG 50
.206
.0344
.0103
.0017 23.80 3.928 1
E7 DCC
.9792
.5347 DCC Transf.
1-4/c #2 AWC 109
.206
.0344
.0224
.0037 9.722 1.605 N,
N-Transf.
2A-DG 1-4/c #2 AWG 21
.206
.0344
.0043
.00072 9.937 1.663 s
- P.U. Resistance and Reactances for E7-2E7, E7-2CA, E7-DCC were taken from the report on Voltage Drop Study dated February 6, 1978, Revision 1.
D O
1
<o s
"5 P.
?-
w a
i g
e S,
M
,h e4 1
m
t
")
VOLTAGE DROP JDY APPENDIX CABLE IMPEDANCES BASE MVA - 100 P.U.
Z. 480V Cable = Z Ohms x 100 = Z Ohms x 434.02
.48L P.U.
Z. 208V Cable = Z Ohms x-100 = Z Ohms x 2311
.2082 Resistance at 900C = Resistance at 750C x 234.5 + 90 = Rx 1.048 234.5 + 75 UNIT SUBSTATION E8 SIZE R/1000 Ft.
X/1000 Ft.
OF LENGTH in.rt.
In JL R in JL.
X in.Jt.
R X
FROM TO CABLE (FEET)
(7.4)
(7.4)
P.U.
P.U.
E8 PNL 2E8 13.0599 12.3220 2E8 PNL 2B 1-3/c 500 35
.0306
.0295
.00107
.00103 2.475 2.380 MCM 2E8 PNL 2D 1-3/c 250 30
.0573
.0322
.0017
.00096 3.928 2.218 g
.d.
E8 2CB 4.6875 4.7396 g
2CB Transf.
1-4/c #6 AWG 145
.516
.0391
.0748
.00566 32.464 2.4565 i
transf.
PNL 32B 1-4/c #2 AWG 25
.206
.0344
.00515
.00086 11.901 1.987 a
o E8 DCD
.612
.6163 d o
Y
~
I)CD Transf.
1-4/c #6 AWG. 1 11
.516
.0391
.0572
.0043!!
24.625 1.883 s
9
3 v
t
~.,
s >
f SIZE R/1000 Ft.
X/1000 ft.
~[ '
0F LENGTil in A in q-R in.n.
X in A R
X FROM TO CABLE (FEET)
(7.4)
~
(7.4)
P.U.
P.U.
Transf.
PHL 2B-DG 1-4/c #2 71
.206
.0344
.00432
.00072 9.983 1.663 AWG l
l
- P.U. Resistance and Keactance for E8-2E8, E8-2CB, E8-DCD were taken from the report on Volt'sge Drop Study,
'~
Revision 1 February 6, 1978.
l
~
w
<a "5
3 u
a?
Y E?
8 4:
VOLTAGE DROP STUDY e-APPENDIX UNIT SUBSTATION E7 PNL. 2C (HY9)
DWC 9527-F-9331 CKT LOAD NO.
WATTS 1
108 3
25 5
25 7
116 9
116 11 116 13 116
- 15 200 17 50 19 150 21 150 23 150
~
25 150 27 25 29 224 2
100 4
50 6
150 8
150 10 150 12 200 14 16 200 18 25 20 25 22 25 24 150 i
26 150 26A 36 28 25 i
lO Total KW 3.157 i
CALC. NO 9527-089-3-ED00-02-F Rev. 2 A23
VOLTAGE DROP STUDY APPENDIX UNTT SUBSTATION E7 PNL 2A-DG DWG. 9527-F-9331 CRT LOAD NO.
WATTS 1
25 2
50 3
4 100 5
6 100 7
250 8
100 9
10 250 11 12 50 13 250 14 250 15 50 16 50 17 50 18 50 19 50 20 0
21 22 50 23 6800 24 Total KW 8.525
(.
CALC No 9527-089-ED00-02-F Rev. 2 A24
=
-o VOLTAGE DROP STUDY
~
~
.~
APPENDIX TNTT rim 4TATTOM E7 PNL 32AB MXO)
DWG. 9527-F-9331 CKI LOAD NO.
WATTS 1
100 3
107 5
238 7
238 9
58 11 108 13 116 15 IP,5 17 18.5 19 21 23 108 2
82 4
279 6
108 8
238 10 58 12 58 14 32 16 32 18 32
~ CALC. No 9527-089-ED00-02-F Total KW 2.029 Rev. 2 A25
e VOLTAGE DROP STUDY APPENDIX iMn 9tmR*A*TrM E' PNL 2A (H06)
DWG.
9527-T-9331 CU L(E D NO.
WATTS 1
100 2
30 3
120 4
240 5
240 6
600 7
100 8
5250 9
100 10 11 1200 12 2000 13 120
~
14 100 15 2000 16 50 17 30 18 50 19 150 20 0
21 50 22 125 23 50 24 60 25 80 26 60 27 60 28 30 29 30 30 31 30 Total N 13.055 CALC. No 9527-089-3-ED00-02-F A26 Rev. 2
r UOLTA E DROP STUDY APPENDIX UNIT SUBSTATION E7 PNL. 32A (MW8)
DWG. 9527-F-9331 CKT.
LOAD NO.
WATTS 1
30 5
560 6
30 30 8
9 30 10 30 e
12 30 13 30 14 30 16 30 18 30 20 30 22 M
Total KW
.92 b
CALC. No 9527-089-3-ED00-02-F Rev. 2 A27
VOLTAGE DROP STUDY APPENDII UNIT SUBSTATION E7
-~PNL 2A-TB (H12)
DWe.
9527-F 0331 CKT LOAD NO.
WATIS 1
2 1250 3
95 4
3400 5
100 6
130 7
100 8
130 9
100 10 275 11 12 275 13 100 14 30 15 30 16 30
~
17 30 18 19 20 21 22 23 24 l
25 26 1500 27 28 1500 i
29 30 Total IGi 9.075 l
CALC. NO 9527-089-3-ED00-02-F i
Rev. 2 A28 l
VOLTAGE DROP STUDY
~
~
APPENDIX UNIT SUBSTATION E7 PNL. 2A-RX (H09)
DWG. 9527-F-9331 CKT LOAD NO.
WATTS 1
2 3
360 4
5 6
100 7
8 100 9
100 10 100 11 12 13 14
~
15 16 17 18 19 700 20 100 21 100 22 100 23 75 24 100 25 75 26 100 27 100 28 100 29 50 30 175 31 50 32 100 33 34 100 35 240 36 100 Total KW 3.125 CALC. NO 9527-089-3-ED00-02-F Rev. 2 A29 7y_
-e 7--
VOLTA 2 DROP STUDY AFFENDII UNIT SUBSTATION E7 PNL. 2AB-RX (Hil)
NG. 9527-F-9331 CKT LOAD NO.
WATIS 1
2 3
4 240 5
100 6
1000 7
8 1000 9
10 11 100 12 240 13 240 14 240 15 16 17 18 19 20 21 100 22 100 23 24 240 25 1000 26 27 28 29 30 31 100 32 33 34 35 36 37 38 39 40 42 100 Total KW 4.800 s
CALC. NO 9527-089-3-ED00-02-F Rev. 2
i
~
WOLTAGE DROP STUDY APPENDIT
~
~
UhTr SUBSTATION E7 PNL. 2AB (H68)
DWG. 9527-F-9331 CKT LOAD NO, WATTS 2
100 5
100 6
100 7
360 10 100 11 240 12 240 13 100 14 1600 15 19 600 20 600 22 240 24 240 30 360 33 100 34 1200 36 42 700 Total KW 6.980 i.
i CALC. NO 9527-089-3-ED00-02-F Rev. 2 A31
VOLTAGE DROP STUDY APPENDIX UNIT SUBSTATION E8 PNL. 2AB-TB (H14)
DWG. 9527-F-9331 CKI LOAD NO.
WATTS 1
390 2
100 l
3 200 7
240 8
240 9
240 10 240 11 240 12 100 14 100 Total 1GT 2.090
\\
CALC. NO 9527-089-3-ED00-02-F Rev. 2 A32 c
p
VOLTAGE DROP STUDY APPENDIX UNIT SUBSTATION E8 PNL. 2B-RX (H19)
DWG. 95 27-F-9331 CKr LOAD NO.
WATIS 2
100 3
360 4
200 5
100 6
200 7
100 8
100 10 100 19 100 20 100 21 700 22 100 23 75 24 100 26 100 27 175 28 100 30 100 31 100 32 100 36 100 Total KW 3.210 o
CALC. NO 9527-089-3-ED00-02-F Rev. 2 A33
VOLTAGE DROP STUDY C
APPENDDt UNIT SUBSTATION E8 PNL. 2B-TB (H13)
DWG. 9527-F-9331 CKT LOAD NO, WATTS 2
1270 3
100 4
3400 5
390 6
75 7
100 8
100 9
100 l
Total KW 5.535 l
e i
1 CALC.10 9527-089-3-ED00-02-F Rev. 2 A34
4 VOLTAE DROP STE APPENDIX UNIT SUBSTATION E8 PNL. 32B (HW9)
DWC. 9527-F-9331 CET LOAD NO.
WATTL 1
100 2
30 3
50 4
100 5
6 30 7
8 9
10 11 12 13 14 100 15 100 16 100 74.
17 100
^
13 100 19 100 20 100 21 100 22 200 23 100 24 Total KW 1.410 1
l s
CALC. NO 9527-089-3-ED00-02-F Rev. 2 A35 e
_w
=.
I o VOLTAGE DROP STUDY APPENDIX UNIT SUBSTATION E8 PNL. 2B-DG DWG. 9527-F-9331 CKT LOAD NO, WATTS 1
100 2
100 l
3 100 4
50 5
100 6
50 i
7 200 8
200 9
l 10 200 11
~
12 100 13 250 14 250 15
('
16 100 17 18 100 19 120 20 100 l
21 200 22 100 23 6800 24 100 Total KW 9.32 l
l CALC. No 9527-089-3-ED00-02-F Rev. 2 A36
s' VOLTAGE DROP STUDY t
APPENDIX UNIT SUBSTATION E8 PNI. 2D (HY1)
DWG. 9527-F-9331 CRT LOAD NO.
WATTS 1
2 100 3
100 4
100 5
100 6
100 7
100 8
100 9
100 10 100 11 100 12 100 13 100 14 100 15 100 16 100 I"-
17 100 18 30 19 30 20 30 21 30 22 30 23 30 24 30 25 26 30 27 28 100 29 100 30 30 Total KW 2.070 CALC. No 9527-089-3-ED00-02-F Rev. 2 g
i~. '...
o VOLTA E DROP STUDY
~
APPENDIX UNIT SUBSTATION E8
~
'PNL. 2B (H67)
DWG. 9527-7-9331 CRT LOAD NO.
WATTS 1
150 2
30 3
600 4
240 5
240 6
600 7
8 9
100 10 0
11 125 12 2000 13 2000 14 30 15 100 16 100 17 p-
.i 18 19 275 20 21 100 22 100 23 100 24 100 25 100 26 120 27 120 28 120 29 100 Total KW 7.55 CALC. 10 9527-089-3-ED00-02-F Rev. 2 A38
~
q:25
, g'#,,si a m M-UNITED STATES g
NUCLEAR REGULATORY COMMISSION k
E WAmevessGTOst, D.C.20008
~l- '@T/
00T 2 71981
~~
e NEMORA WUM FOR: Jim Van Vliet. Operating Reactors Branch #2
.I.
5' Division of Licensing
"[
pc
A FR3t:
Steve Maskell, Power Systems Branch b-
'O
[~i Division of Systems Integration
)
SUBJECT:
CONFERENCE CALL ON VOLTAGE VERIFICATION ADEQUACY OF STATION ELECTRICAL SYSTEMS - BRUNSWICK STEAM ELECTRIC PLAKT This memo confims the telephone conversation df October 23, 1981 between R. Poulk (CP&L), P. Bernard (CP&L), J. Van Vliet (IRC) and S. Maskell (NRC).
The licensee explained that the disempancies between the test voltages and study voltages wem due to the study being based on worst case conditions
. (all motors running) while the bus voltages were measured during actual plant operation when not all motors were operating.~ It was noted that these assumotions lead to the calculated bus voltages being more con-servative (lower) than the actual measured voltages.
CP&L stated that transfomer taps were adjusted to provide at least 393 volts on an MCC
},..
during worst case conditions.
"~
CP&L will confim the above explanation with their architect / engineer and inform Jim Van Vliet of the results of that conversation.
Please send a copy of this memo to CP&L and ask them to contact you if they do not agree with any of the above statements.
l Steve Phskell Power Systems Branch Division of Systems Integration o
cc:
D. Weber (EG&G)
A. Ungaro N. Srinivasan.
- 5. Maskell l
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ENCLOSURE 3 SITE TEST VOLTAGE STUDY REVISION 1. MARCII 23, 1982 l
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REPORT ON SITE TEST VOLTAGE STUDY FOR
_ CAROLINA POWER & LIGHT COMPAhi BRUNSWICK STEAM ELECTRIC PIANT UNIT NO. 2 E
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UNITED ENGINEERS & CONSTRUCTORS INC.
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UE&C Job Order No. 9527-089 REVISIONE Date:
Tebruary 20, 1981 No.
Date Prep. By Chkd. By Q/A Appr. By Prepared:
m' 9 'fm
/K. D'Souza 1
3/23/82 h,ak 3NY Approved: S-C. D. Greiman i
l CALC. NO. 9527-089-3-ED00-03-F Rev. 1 e
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5 INDEX r-Pare No.
1.0 PURPOSE 1
2.0 SIMiARY OF RESULTS 2
2.1 SAT STEADY STATE 2
2.2 CIRCULATING WATER PUMP START 3
2.3 CIRCULATING WATER PUMP RUN 4
2.4 SCREEN WASH PUMP 2B START 5
2.5 CIRCULATING WATER PUMP AND SCREEN WASH PUMP 2B RUN 6
2.6 REMARKS 7
2.7 WORST CASE TEST VOLTAGE 7
2.8 T1.P SETIINGS 7
2.9 OIERATING VOLTAGE LIMIIS 7
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2.10 TOLERANCE 7
i 3.0 CRITERIA 8
4.0 METHOD OF ANALYSIS 9
4.1 PER UNII VALUES 9
4.2 IMPEDANCES 9
5.0 REFERENCES
10 6.0 DATA 11 6.1 SPECIFICATIONS 11 APPENDIX Al se CALC. No. 9527-089-3-ED00-03-F Rev. 1
c 1.0 PURPOSE 1.1 This study is to review and compare the site test voltage on various 4160V and 480V buses to the analytical study voltages obtained through UE&C computer program ' Volts'.
All the B.O.P. buses and emergency buses loads are fed from the Start-up Auxiliary Transformer (SAT).
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CALC. No. 9527-089-3-ED00-03-F Rev. 1 1-
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SUMMARY
OF RESULTS 2.1 SAT STEADY STATE -
TEST TEST TEST STUDY LOAD CURRENI VOLTAGE VOLTAGE BUS NAME MW AMPS VOLTS VOLTS 2B 3.74 588 4130 4209 2C 4.21 672 4060 4061 134 4060 4061 E4 2D 7.68 1092 4060 4061 R1 205 4060 4061 E3 COM B
.53 76 4060 4061 UNIT SUB 2E
.6696 1386 480 469 UNIT SUB 2F
.63 1301 485 468 UNIT SUB E7
.5976 945 480 479 6
UNIT SUB E8
.396 580 482 485 MCC 2FB
.0072 10 482 485 W
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.a CALC. NO. 9527-089-3-ED00-03-F E***
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r 2.2 CIRCULATING WATER PUMP START 7,
j TEST TEST TEST STUDY LOAD CURRENI VOLTAGE VOLTAGE BUS NAME MW AMPS VOLTS VOLTS 2B 3.43 570 4095 4191 2C 3.79 651 3840/a,3 0 3876 E4 128 3845 3876 2D 13.76 2079 3840 3876 E3 175 3840 3876 COM B
.53 76 3865 3876 UNIT SUB 2E
.7848 1495 456 445 R1 UNIT SUB 2F
.6876 1302 462 446 UNIT SUB E7
.558 924 456 457 UNIT SUB E8
.3852 512 460 466 MCC 2FB
.0065 11 458 466 e
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t CALC. No. 9527-089-3-ED00-03-F Rev. 1
2.3 CIRCULATING WATER PUMP RUN TEST TEST TEST STUDY LOAD CURRENI VOLTAGE VOLTAGE BUS NAME NW AMPS VOLTS VOLTS 2B 3.46 588 4130 4199 2C 4.0 672 4000 4060 E4 134 4000 4060 2D 8.9 1344 4000 4060 E3 204 3990 4060 COM B
.53 76 4060 4060 UNII SUB 2E
.6696 1386 480 469 UNIT SUB 2F
.63 1301 483 470 UNIT SUB E7
.549 924 480 478 C
UNIT SUB E8
.396 512 480 488 MCC 2PB
.0072 10 479 488 9
e CALC. No. 9527-089-3-ED00-03-F Rev. 1
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2.4 SCREEN WASH PUMP 2B START TEST TEST TEST STUDY LOAD CURRENT VOLTAGE VOLTAGE
- BUS NAME MW AMPS VOLTS VOLTS 2B 3.46 588 4130 4191 2C 4.54 840 3980 3952 E4 286 3983 3952 2D 8.8 1365 3980 3952 E3 202 3962 3952 COM B
.53 76 4025 3952 UNIT SUB 2E
.6696 1365 476 456 UNIT SUB 2F
.63 1281 480 456 UNIT SUB E7
.549 924 476 465
- C UNIT SUB E8
.5976 1848 456 419 MCC 2PB
.194 oo
- 456 401 R1
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- Fig. listed in CP&L Degraded Voltage Study Test Data.
Actually current can't be infinite. It appears that R1 the available magnitude of current was beyond the indicating scale of the instrument.
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CALC. NO. 9527-089-3-ED00-03-F Rev. 1.
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.; i 2.5 CIRCULATING WATER PUMP AND SCREEN WASH PUMP 2B RUN TEST TEST TEST STUDY LOAD CURRENT VOLTAGE VOLTAGE BUS NAME MW AMPS VOLTS VOLTS 2B 3.46 588 4130 4197 2C 4.10 731 4025 4026 E4 164 4020 4026 2D 8.9 1365 4025 4026 E3 205 4025 4026 COM B
.53 76 4060 4026 R1 UNIT SUB 2E 6696 1386 480 466 UNIT SUB 2F
.63 1301 485 465 UNTI SUBME7
.594 924 480 475 i~-
UNIT SUB E8
.5364 735 480 476 MCC 2PB
.108 160 477 475
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s CALC. No. 9527-089-3-ED00-03-F Rn, 1 i, -
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f 2.6 REMARKS The results show all the test voltages closely approach the study voltages obtained through UE&C ' Volts' program.
2.7 WORST CASE TEST VOLTAGE The Worst Case Test Voltage is Bus 2B Voltage of SAT Steady State (Ref. 2.1.) and is well within the positive and negative limits of the error of the recording instruments used for the Test at BSEP.
R1 The Study Voltage 4209V of Bus 2B (Ref. 2.1.) is between 4211V and 4050V which is the higher and inwer limits of instrumentation error (Ref. Appendix A.
Instrumentation error calculation).
2.8 TAP SETTINGS The transformer tap settings were the same as used in the report on voltage drop study (Ref. 5.2.).
2.9 OPERATING VOLTAGE LIMITS The Operating Voltage Limits are the same as shown in the report on I
voltage drop study (Ref. 5.2.).
2.10 TOLIRANCE The test voltage should be identical to the analytical voltage.
If
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there are variations they should be well within the instrumentation l
l error of the recording instruments and this positive and negative error is considered as the tolerance.
s CALC. NO. 9527-089-3-ED00-03-F Rev. 1
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i 3.0 CRITERIA 7
The Site Test Voltages and the Study Voltages obtained through UE&C
' Volts' program 'should be identical.
If there are any variations then it should be well within the error of the recording instruments used for the test at BSEP.
e All the B.O.P. buses and emergency buses loads are from the SAT. At the time of the test the power generation was 40% of the rated capacity of each. unit and the following loads were running:
1.
$us 2B - Reactor Recirculating Water Pumps 2A and 2B 2.
Bas 2C - Circulating Water Pump 2C, Condenser Booster Pump 2A, Hester Drain Pump 2B, Condensate Pump 2A 3.
Bur 2D - Circulating Water Pump 2D, Condenser Booster Pump 2C,
_a Beater Drain Pump 2C, Condensate Pumps 2C, Chillers 2A 4
Bus E3 - Control Rod Drive Hydraulic Pump 2A, Nuclear Service Water
-r Pum.'2A, Conventional Service Water Pump 2A 5.
Bur E4 - Nuclear Service Water Pumps 2B, Conventional Service Water Pumps 2B 6.
Bus Common B - Turbine Building Cooling Tower Pumps 2A and 2B 7.
Bus E7 - Ret.etor Building Closed Cooling Water Pumps 2A and 2C, Reactor Building Supply Fans 2A and 2C, Reactor Building Exhaust Fans 2A and 2C I
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8.
Bus E8 - Reactor Building Exhaust Fans 2B 9.
Bus 2E - Turbine Building Closed Cooling Water Pump 2A, Turbine Building Supply Fans 2C, Turbine Building Exhaust Fans 2A and 2C 10.
Bus 2F - Turbine Building Closed Cooling Water Pumps 2C, Turbine Building Supply Fans 2B and 2D, Turbine Building Exhaust Fans 2B All the transformer tolerances, cable impedances, running and starting loads were considered.
CALC. NO. 9527-089-3-ED00-03-F
-8 Rev. 1
b
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b 4.0 METHOD OF ANALYSIS The UE&C computer program ' Volts' was used to calculate the bus voltages.
This program performs a Gauss-Seidal load flow calculation. Up to 25 buses can be modeled. Transformer with tap changes can be represented. Bus voltages are computed by the program to tolerance of 1 0001.
4.1 PER UNIT VALUES Calculations were performed using a per unit scheme with the base values as follows:
System Base Volts Base MVA 4160V 4160V 100 480V 480V 100 u_
4.2 IMPEDANCES Transformer and cable impedance values were taken from the voltage drop
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study (Ref. 5.2.).
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G CALC. NO. 9527-089-3-ED00-03-F Rev. 1.
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5.0 REFERENCES
Cs.
5.1 UE&C User Guide for Volts Program 25 Bus Load Flow Analysis ard Voltage Regulation Program, July 15, 1980 5.2 Report c.T Voltage Drop Study for Carolina Power & Light Company Unit No. 2 dated December 15, 1980, Revision 2 5.3 CP&L letter to NRC Serial No. NO-80-1093 dated July 24, 1980 5.4 9527-F-3002 Auxiliary One Line Diagram 4160 Volt Swgr. 2B, 2C, 2D and Conunon B 5.5 9527-F-3053 Auxiliary One Line Diagram 480V System MCC 2CA, 2CB, 2PA, 2PB and 2SA 5.6 9527-F-3005 Auxiliary One Line Diagram 480V System
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Unit Substa. 2E, 2F, E7, E8 and Common D
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c CALC. No. 9527-089-3-ED00-03-F l
Rev. 1 ;
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6.0 DATA
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6.1 SPECIFICATIONS Gould Brush Recorder 260 Gould Brush Recorder 2800 Could R.M.S. Level Converter Model 13-4618-10 Westinghouse Type VP-840 Watt Transducer Requirement of Instrument Transformers ANSI C-57.13-1978 1
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O CALC. 10. 9527-089-3-ED00-03-F Rev. 1 i e
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APPENDIX SITE TEST VOLTAGE STUDY FOR CAROLINA POWER & LIGHT COMPANY BRUNSWICR STEAM ELECTRIC PLANT UNIT NO. 2
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El UNTIED ENGINEERS & CONSTRUCTORS INC.
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VOLTAGES i
AND IMPEDANCE DIAGRAMS l -
CALC. N:. 9527-089-3-ED00-03-F Al Rev. 1
SITE TEST VOLTAGE STUDY SAT STEADY STATE STUDY VOLTAGE BUS NAMES PER UNIT VOLTAGE ACTUAL VOLTAGE 4160V Bus 2B 1.0114 4208 4160V Bus 2C 0.9720 4043 4160V Bus 2D 0.9720 4043 4160V Bus Common B 0.9720 4043 480V Unit Substation 2E 0.9377 450 480V Unit Substation 2F 0.9706 466 480V Unit Substation E7 0.9933 477 480V Unit Substation E8 1.0062 483 480V Motor Control Center 2PB 1.0059 483
.g NOTE: All voltages are on the base voltage shown in the left-hand column l-s CALC. No. 9527-089-3-ED00-03-F Rev. 1 A2
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SITE TESf VOLTAGE STUDY SAT CIRCULATING WATER PUMP START STUDY VOLTAGE BUS NAMES PER UNIT VOLTAGE ACTUAL VOLTAGE 4160V Bus 2B 1.0074 4191 4160V Bus 2C 0.9318 3876 4180V Bus 2D 0.9318 3876 4160V Bus Comon B 0.9318 3876 480V Unit Substation 2E 0.9272 445 480V Unit Substation 2F 0.9288 446 480V Unit Substation E7 0.9520 457 C
480V Unit Substation E8 0.9702 466 480V Motor Control Center 2PB 0.9698 466 (si.
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NOIE: All the voltages are on the base voltage shown in the left-hand colum i
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CALC. NO. 9527-089-3-ED00-03-F A3 Rev. 1 een,emm e m - nw -..+
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SITE TEST VOLTAGE STUDY SAT CIRCULATING WATER PUMP RUN STUDY VOLTAGE BUS NAMES PER UNIT VOLTAGE AC UAL VOLTAGE T
4160V Bus 2B 1.0095 4199 4160V Bus 2C 0.9760 4060 4150V Bus 2D 0.9760 4060 4160V Bus Common B 0.9760 4060 480V Unit Substation 2E 0.9764 469 480V Unit Substation 2F 0.9782 470 480V Unit Substation E7 0.9968 478 480V Unit Substation E8 1.0162 488 480V Motor Control Center 2PB 1.0159 488
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NOTE: All the voltages are on the base voltage shown in the 1 eft-hand column i
W CALC.jo. 9527-089-3-ED00-03-F Rev.
34 i
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.h SITE TEST VOLTAGE STUDY SAT SCREEN WASH PUMP 2B START STUDY VOLTAGE BUS NAMES PER UNIT VOLTAGE ACTUAL VOLTAGE 4160V Bus 2B 1.0076 4191 4160V Bus 2C 0.9501 3952 4160V Bus 2D 0.9501 3952 4160V Bus Common B 0.9501 3952 480V Unit Substation 2E 0.9493 456 480V Unit Substation 2F 0.9509 456 480V Unit Substation E7 0.9691 465 480V Unit Substation E8 0.8735 419 480V Motor Control Center 2PB 0.8361 401
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_ NOTE: All the voltages are on the base valtage shown in the
=
left-hand column W
CALC. NO. 9527-089-3-ED00-03-F Rev. 1 AS
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SITE TEST VOLTAGE STUDY SAT CWP AND SCREEN WASH PUMP 2B RUN STUDY VOLTAGE BUS NAMES PER UNIT VOLTAGE ACTUAL VOLTAGE 4160V Bus 2B 1.0089 4197 4160V Bus 2C 0.9678 4026 4160V Bus 2D 0.9678 4026 4160V Bus Common B 0.9678 4026 480V Unit Substation 2E 0.9702 466 480V Unit Substation 2F 0.9689 465 480V Unit Substation E7 0.9899 475 480V Unit Substation E8 0.9951 478 480V Motor Control Center 2PB 0.9898 475
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CALC. NO. 9527-089-3-ED00-03-F Rev. 1 A6
m,
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230 KV SYD h 2=l.0377 E=.0221 2.0216
+j.4 Bal
+J. 4 596 q
ZB e
5= 3.74
+3 1.9247 b 2C,2D,E3 E4, COMMoM B 3
u e
z,.9159 E.8267 E=.8978 Z=.9325
+j 4.693
+d 4.683
+J 4.7 5 J4 5 = 12. 4 2
@ +gg.657
+j s.i332 5=.3%
h n
u o
s=.5976 5.6696 s =.63
+d'2166 t3. 51
+q(5h
+J.9493 h
f 2 2.8273 y
+3 2.8572 g
2PB e
h s =. c o72
+3.0042 SAT iM PEDAMCE DI AQR AM E
STEADY STATE SITE TEST Vol.TA<5E STUDY pig, gg TEST DATA BEN 5
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,,E30 KV SYD h E = j. o 377 e
o 7 = 0. 0 216 ti. 4 5%
. 2B P
s = 3.43
+3 2.-13">9
@ 2C,2D COMMoM &
3m e
23.9159 2 =. 92c.7 E=.097 B Z:.9325 2 =.1945
@o+3 4.693 @ h_o h hi 4.(,5 t 43 4.693
+3 4.75 go
+J.26 3 8 F
E7 s=10.08
_o 2E IF y
EB
- CWP 2B 4j 3,o949 w$
e
$.o se.556 s =.64f>6 s..G3
+j. 3 4 ?.
P y, o oi4 e
g
+3 4704
+3.9378 id 8931
[',gh
-j,los
,; 2PB t;
o g
S=.oo65
+j.o0582 9
8 o'
<=, A T IMPEPAMCE DIACRAM Y
3 CIRCULATIMC WATER PUMP STAR T 1
slTE TEST VOLTAGE STubY TEST DATA pg,g BEN 3
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e
,. 230 KV SYD E J.o377 e
Z = o.o 2flo t 's. 4 5%
m Z = 0.0221 1
+i.4821 Sr3.%
+J 2.'5c)l5 h 2C,2D, COMMON B cwP 28 3-e e
b =. 9159 '
Er.826T 2=.8976 Z=.9325
+J 4.693
+3 + 6 83 s,"i3,4 3 g
g
+ 3 4.75
&J 4.657
_._-o_ t7
-o-ZE
--o-- 2 F
--o-- ED
+j 5.lB 0 4 e
55396 9
g ag S =.54 9 s=.6696 s=,63 m
tj.15 0 2-2.8273 O
- P
+d. 5372 fi.9378
+J.0874 hp
+.i 2. B e 'iz 1
a a
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v u
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s.co7Z y
+ 3.004(
clRCULATINC1 WATER POMP RUM S
SITE TEST VOLTAGE sTuoy A
TEST DATA FIG. A3 BEN 4
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b 230 KV SYD E=d o.o377 r
E = 0. 0 2.21 E,.o 216 tj.462:
F3.4596 2B o
$3 3.46
+J 2.3917 2C, '2. D COMMoM B 3
,g Z=.9159 23 8267 Z=.B978 ge.9325 tj 4.693
+d 4.683
+j 4.7f
+3 4 659 s = 13. 87
-o-- E7
-o-- 2 E
--o-2F EB
.pj 7,7534 y
y e
s=.5976
~8 s=. s 4e; s =. coco 96 S
4,3
+33 3336 q
+3. 5 2 B3
+3.9046 13. 859 B Z= 2.B273 2PB +32.8572 m
e S=.o486 o
n o.osoi g
z=l9094 scWP ZB tJ 1.4 017.
w 4:
DIACRAM P
SAT IMPEDAMCE 1
SCREEN WASH PUMP 2B START U.OO29 SITE TEST VOLTAGE STUDY
-i.0117 FIC A4 3
TEST DATA B E N ?.
ti 2 50 XV SYD Z=d.0377 4l60 V u
o t'
Z=.027I 2.' ' 013 b
+3. 482:
+J.O 16 AlcooV U
S = 3.46 f 3 2.3917 c.'el.P. 2B 04 2C* 2D, coratAod o n
n o
4160 V
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- 2. 9159 2 =. 8 2(,7 E. =. 8978 Z.9325
+3 4.693 tj 4.6 83
+3 4.75
+-J 4.6 5 7 y
4Bo h wr E7 h-o-2.E
-o-2F EB Th 5 =. 5364 n
u
<n y
+3.2927 S=.594 S =.7662.
5=.63 3
+3. 4 8'11
+3.BroO4 tJ. B93I Z= 2.8273 n
9 2PB, fa 2 0275 3
M If y
S=.108 u
4
.O762 8
CWP + SCREEN WASH POMP 2B ROM SITE. TEST VOLTAGE STUDY TEST DATA FIC,. A S BEN l
/x SITE TEST VOLTAGE STUDY APPENDIX SAT STEADY STATE INSTRUMENTATION ERROR CAIEULATIONS 4160V BUS 2B (Ref. Fig. A6)
INSTRUMENT MAXDfUM MINIMUM NAMES VOLTAGE
- 7. ERROR VOLTAGE VOLTAGE Potential
+ 0.6 4154.78 4130 Transformer
- 0.6 4105.22 RMS Level
+ 1.0 4196.32 4154.78 Converter
- 1.0 4113.23
+ 1.0 4146.27 u_
4105.22
- 1.0 4064.17 2800 Brush
+ 0.35 4211 4196.32
/
Recorder
- 0.35 4181.63
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+ 0.35 4127.62 4113.23 i
- 0.35 4098.83
+ 0.35 4160.78 4146.27
- 0.35 4131.76
+ 0.35 4078.39 4064.17
- 0.35 4049.95 *
- The maximum and minimum voltages which could be recorded taking into account instrumentation error CALC. No. 9527-089-3-ED00-03-F Rev. 1 A12 e
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VOLT A4 E R EC O R D E.R CONNECTION FO R 4160V BUS 2.B i
RMS LEVEL
>g VOLTAC,E COMVERTER 2B00 BROSH f120VAC IN PO T 41 Gov 5V DC RECORDER AC FOLL 5CALE OUTPOT
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.O SITE TEST VOLTAC,E STUPY e
y S AT STE ADY STATE 4,
TEST DATA 3
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8 4
FIG. A 6
.