ML20012C460

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Forwards Control Loop Voltage Drop Calculation Inadvertently Omitted from 900313 Ltr Providing Addl Info Re Ari/Rpt
ML20012C460
Person / Time
Site: Brunswick  Duke Energy icon.png
Issue date: 03/15/1990
From: Loflin L
CAROLINA POWER & LIGHT CO.
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
NLS-90-067, NLS-90-67, TAC-73351, TAC-73352, NUDOCS 9003210355
Download: ML20012C460 (2)


Text

p CD&L Carolina Power & Light Company SERIAL: NLS-90-067 MAR 151990 L United States Nuclear Regulatory Commission ATTENTION: Document Control Desk Washington,.DC 20555 BRUNSWICK STEAM ELECTRIC PLANT, UNIT NOS. 1 AND 2 I DOCKET NOS. 50-325'& 50-324/ LICENSE NOS. DPR-71 & DPR-62 ARI/RPT POWER SUPPLY (TAC NOS. 73351/73352) 1 Gentlemen:

1 L By letter dated March 13, 1990, Carolina Power & Light Company '

provided additional-information regarding ARI/RPT. The calculation identified in the text of information provided was inadvertently not mailed with that letter. Attached is the

i. Control Loop Voltage Drop Calculation in support of the .

l information previously provided. 1 Questions regarding this matter should be directed to Mr. Dale B.

l ,

Bates at (919) 546-6154.

l Yours very truly, I J1].k.- hr ' A-lL l L. I. Loflin

, Manager i

Nuclear Licensing Section DBB/ecc (653ECC)

Enclosure cc: Mr. S. D. Ebneter Mr.-N. B. Le Mr. W. H. Ruland 0

f.

411 Fayetteville Street e P. O. Box 1551

  • Raleig'n. N. C. 27602 ecyJ2nr.mim:rresrtmi".lu2:ZEmsn222nn7&TJ ,l \

9003210335 900315

, PDR ADOCK 05000324 I P. PDC ,

. i

,g f e. ,

' CONTROL: LOOP VOLTAGE DROP CALCULATION.

I DIST + 123' CAB. 190' CAB. 165' CAB. -an' i^ CAB PNL'  ;

12A 123'- P603 190' P624 165' P612 -40' P613  :

!=

' ~

' To tal- l eng th' -l (Worst Case) 1036' '

DC Resistance per 1000' (#12AWG)- 1.92.

Total Amps (Ckt. Load) 1.30 -

1036 x l'.92 x 1.3 =

1000 2.59 Volts Drop t

I-SWBC

+  ? ?' ' DIST 271.. PNL 2A 12A 1

Total Length 542' DC Resistance per 1000' (2-1/0 AWG-per leg)- .065 Total-Amps (Ckt. load) 34.73 l 542 x x 34.73

= 1.22 Volts Drop l

s  ;

l li BATT +/Pi 75' SWBD

]

2A-1 -(N/P) 75' 2A 1

Total Length 150' DC Resistan'ce per 1000' (2-500 MCM per Leg) .013 Total Amps (Ckt.-Loud) 569.5

  • 9 1006 =1.11 Volts Drop l Total volta drop for control p is 4.92 VDC
\; A .

PRE,ARED BY 4'd -

DATE f*4~90 VERIFIED BY ( _

DATE M' M 90 l L A,,,_ ,, isLw DA,, z-~

1

._ _ _ _ _ . _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ . _ _ _ _ _ _ _ _ _ _ . _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ . . _ _ _ _ _ _ _ _