ML18009A712
| ML18009A712 | |
| Person / Time | |
|---|---|
| Site: | Harris  |
| Issue date: | 10/22/1990 |
| From: | Loflin L CAROLINA POWER & LIGHT CO. |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| RTR-REGGD-01.075, RTR-REGGD-1.075 GL-89-19, NLS-90-218, NUDOCS 9010300322 | |
| Download: ML18009A712 (4) | |
Text
ACCELERATED DISTRIBUTION DEMONSTRATION SYSTEM REGULATORY INFORMATION DISTRIBUTION SYSTEM (RIDS)
ACCESSION NBR:9010300322 DOC.DATE: 90/10/22 NOTARIZED: NO FACIL:50-400 Shearon Harris Nuclear Power Plant, Unit 1, Carolina AUTH.NAME AUTHOR AFFXLIATION LOFLIN,L.I.
Carolina Power
& Light Co.
RECIP.NAME RECIPXENT AFFILIATION Document Control Branch (Document Control Desk)
SUMECT: Submits addi info in response to Generic Ltr 89-19 re control sys failures.
DISTRIBUTION CODE:
AOOID COPIES RECEIVED:LTR 3 ENCL 0
SIZE:
(
TXTLE: OR Submittal:
General Distribution NOTES:Application for permit renewal filed.
DOCKET, 8 05000400 05000400 D
RECIPIENT ID CODE/NAME PD2-1 LA BECKER,D COPIES LTTR ENCL INTERNAL: ACRS 6
NRR/DOEA/OTSB11 1
NRR/DST/SELB 8D 1
NRR/DST/SRXB 8E 1
OC/SEMB
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1'REG FIX;E" "M0 EXTERNAL: NRC PDR 1
RECIPIENT ID CODE/NAME PD2-1 PD NRR/DET/ECMB 9H NRR/DST 8E2 NRR/DST/SICB 7E NUDOCS-ABSTRACT OGC/HDS1 RES/DSIR/EIB NSIC COPIES LTTR ENCL D
D S
D NOTE TO ALL"RIDS" RECIPIENTS:
D D
PLEASE HELP US TO REDUCE WASTE! CONTACT THE DOCUMENT CONTROL DESK, ROOM Pl-37 (EXT. 20079) TO ELIMINATEYOUR NAME FROM DISTRIBUTION LISTS FOR DOCUMENTS YOU DON'T NEED!
TOTAL NUMBER OF COPIES REQUIRED:
LTTR 23 ENCL
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Carolina Power 8 Light Company OCT S2 t990 SERIAL:
NLS-90-218 United States Nuclear Regulatory Commission ATTENTION: Document Control Desk Washington, DC 20555 SHEARON HARRIS NUCLEAR POWER PLANT DOCKET NO. 50-400/LICENSE NO. NPF-63 GENERIC LETTER 89-19 CONTROL SYSTEMS FAILURES Gentlemen:
Carolina Power 6 Light Company hereby submits additional information in response to NRC Generic Letter 89-19 concerning control systems failures for t:he Shearon Harris Nuclear Power Plant (SHNPP).
Specifically, this information concerns the physical and electrical separation of the Steam Generator Overfill Protection circuits from the Main Feedwater Control System circuits.
This information is submitted in response to a verbal request from the NRC staff.
Separation of the Steam Generator Overfill Protection circuits and the Main Feedwater Control System circuits at SHNPP is provided in accordance wit:h Regulatory Guide 1.75 and IEEE-384.
Steam Generator Overfill Protection is not located in the same cabinet as the Main Feedwater Control System circuitry.
The overfill protect:ion circuitry is located in four safety-grade instrument protection cabinets (Protection Channels I through IV).
Control circuitry for the Main Feedwater Control System resides in separate cabinets (Control Cabinets 6, 7, and 8).
Raceways and cabling -for the Steam Generator Overfill Protection circuits are physically separated from the raceways and cabling for the Main Feedwater Control System circuits.
Within the Main Feedwater Control System circuits the safety-related portions are elect:rically isolated from the non-safety portions in accordance IEEE-384.
Please refer any questions regarding this submittal to Mr. J. H.
Eads at (919) 546-4165.
Yours very truly, L. I. Loflin Manager Nuclear Licensing Section JHE/j he ()
cc:
Mr. R. A. Becker Mr. S.
D. Ebneter Mr. J.
E. Tedrow Qt iit4 4 411 Fayettevilte Street e P, 0. Box 1551 o Raleigh, N. C. 27602 9010300322 901022 PDR ADOCK 05000400 PDC
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