ML20072E709
| ML20072E709 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 06/15/1983 |
| From: | Tucker H DUKE POWER CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, SD-413-82-10, NUDOCS 8306270118 | |
| Download: ML20072E709 (3) | |
Text
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D DUKE Powna GOMPANY P.O. HOX 33180 CHAMLOTTE, N.C. 28242 IIAL B. TtJCKER TELEPlf0NE (704) pC-m1 wwmeme sment June 15, 1983 co
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Mr. James P. O'Reilly, Regional Administrator M
U. S. Nuclear Regulatory Commission I"3, Region II O,':,3 101 Marietta Street, NW, Suite 2900 3
Q3 Atlanta, Georgia 30303
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Re: Catawba Nuclear Station o
Unit 1 Docket No. 50-413
Dear Mr. O'Reilly:
Pursuant to 10 CFR 50.55e, please find attached a revised response to Significant Deficiency Report SD 413/82-10.
Very truly yours, G g/ /
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Hal B. Tucker RWO/php Attachment (1) cc: Director Mr. P. K. Van Doorn Office of Inspection and Enforcement NRC Resident Inspector U. S. Nuclear Regulatory Commission Catawba Nuclear Station Washington, D. C. 20555 INPO Records Center Mr. Robert Guild, Esq.
Suite 1500 Attorney-at-Law 1100 Circle 75 Parkway P.O. Box 12097 Atlanta, Georgia 30339 Charleston, South Carolina 29412 Palmetto Alliance 2135 Devine Street Columbia, South Carolina 29205 l
OFFI' 8306270118 830615 l
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-Juns 15, 1983 Duke Power Company Catawba Nuclear Station Report Number: SD 413/82-10, Rev.1 Report Date: June 15 1983 Facility: Catawba Nuclear Station, Unit 1 Identification of Deficiency: ~Non-Class lE communication, fire detection and. lighting cables were attached to the side rails of essential cable trays.
Initial Report: On March 29, 1982 Mr. A. Ignatonis of the NRC, Region II, Atlanta, Georgia, was notified of this deficiency by Mr. W. O. Henry and Mr. D. E. Roberts of Duke Power Company, Charlotte, North Carolina 28242.
Suppliers and/or Components: The Non-Class lE communications, fire detection and lighting cables are comprised of the following type constructions:
- 1) Pairs of #22 AWG insulated with tefzel as furnished by Okonite and cross-linked polyethylene as furnished by.
the Rockbestos Company enclosed in a 25 mil thick welded
' seam corrugated aluminum armor designated as PAi cables.
- 2) Shielded pairs of #16 AWG insulated with flama retardant cross-linked polyethylene as furnished by Brand-kex and flame retardant ethylene propylene rubber as furnished by the Okonite Company, Anaconda Ericsson and Eaton Corporation enclosed in a.25 mil thick galvanized steel interlocked armor designated as SPX cables.
3)
Singles insulated with cross-linked polyethylene as manufactured by the Okonite Company enclosed in a 25 mil thick' welded seam corrugated aluminum armer designated as ALS cables.
Description of Deficiency:
Field run non-Class lE cables used in communication, fire detection and lighting applications were attached to the' side rails of essential cable trays and/or installed in the proximity of Class lE cables /
cable trays such that the minimum separation distances as defined in the Catawba
.FSAR were not maintained.
This deficiency was noted in the plant construction phase during'a routine inspection.
Corrective Action: Based on the limited power available on these' circuits and/or the cable construction and associated fire test results that have been'provided by the cable manufacturers, the cable installation described above does not degrade Class lE circuits below an acceptable level and is therefore acceptable as installed.
The following information is provided in support of this position:
l l
t JP0/RWO-June 15, 1983-
- Report No. SD 413/82-10, Rev. 1 Page 2-1.
All of the cables in these applications have been qualified in accordance with the IEEE-383-1974 flame test.
2.
Class lE circuits are installed in' interlocked armor cables which i
' have been tested to demonstrate'that the circuits in one cable are l
unaffected by a fault in an adjacent cable. Refer to the response of question 430.28 in the FSAR.
T 3.
These circuits are fed from low-voltage systems as listed below, thus minimizing the potential for any adverse effects on Class 1E circuits.
4-a) Lighting circuits are either 250 volts DC or 120 volts'AC.
j b) Fire detection circuits are fed from the 120 volt AC auxiliary control power system inverters, c) Communication circuits operate at_98 or 120 volts AC or 48 volts
+
DC and, in either case,~are powered from a dedicated power supply.
4.
Catawba FSAR Section 8.3.1.4.5.2 has been revised to exempt these cables from the separation criteria.. However, all cables installed after June 1,_
1982 were restricted to being attached to non-Class 1E cable. trays only.
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