ML20011A983

Deficiency Rept Re Cracks in Jacketing Matl of Anaconda Ericsson Co 8 Kv & 15 Kv Cable,Initially Reported 810925. Possibly Due to Use of Chlorinated Polyethylene Jacket Over Interlocked Armor &/Or Rigors of Installation

ML20011A983
Person / Time
Site:	Catawba
Issue date:	10/23/1981
From:	Parker W DUKE POWER CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
10CFR-050.55E, 10CFR-50.55E, SD-413-81-21, SD-414-81-21, NUDOCS 8111030452
Download: ML20011A983 (2)

Text

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WILLI AM O. PAR M ER, J R- October 23,~1981 Vice PatslOENT ICL E Pe*O k t AntA 70 4 Sitau PoooucTion 373-4005 Mr. James P. O'Reilly, Director U. S. Nuclear Regulatory Commission Region II 101 Marietta treet, Suite 3100 3 Atlanta, Georgia 30303 g S

Re: Catawba Nuclear Station , Op0g S Do tN 50-413 and -414 3 1 A

Dear Mr. O'Reilly:

.{%V l 6.'.t D Pursuant to 10CFR 50.55e, please find attached Significant Deficiency Report SD-413, 414/81-21.

Very truly yours, g / f4% r CIA $C. ],

William O. Parker, Jr.

RWO:scs Attachment ,

cc: Director Resident Inspector Offfee of Inspection and Enforcement U. S. Nuclear Regulatory Commission U. s. Nuclear Regulatory Commission Catawba Nuclear Station Washington, D. C. 20555 gb 3 II

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CATAWBA NUCLEAR STATION Report Number: SD-413, 414/81-21 Report Date:

Facility: Catawba Nuclear Station Units 1 & 2 Identification of Deficiency:

Cracks were found in the jacketing material of a Mdium Voltage Power Cable (8KV and 15KV)

Initial Report:

On September 25, 1981, Mr. A. Ignatonis of the NRC Region II, Atlanta, GA was notified of this deficiency by Mr. W. O. Henry, Mr. W. J. Foley and Mr. J. L. Crenshaw of Duke Power Company, Charlotte, NC 28242.

Supplier and/or Component:

Cracking occurred in the jacketing of cable constructed with EP insulation and a chlorinated polyethylene (CPE) jacket over interlocked armor. This cable is manufactured by Anaconda Ericsson Company of Indianapolis, Indiana in accordance with Duke Power specification CNS-1354.01-00-0001.

Description of Deficiency:

After installation of cable for the cooling towers had been completed, it was noticed the jacket had split in several places. A definite cause has not been detennined but is postulated to be due to a combination of the use of a chlorinated polyethlene jacket over interlocked armor and/or the rigors of installation.

Water penetrating the cable jacket through the cracks may cause degradation of the cable shielding which could lead to the failure of the cable.

Analysis of Safety Implication:

Cable constructed with a CPE jacket has been limited to non-class lE applic-ations. The CPE jacketed cable in stock could have been used in class lE applications which would have had the potential of affecting the safety of operations. The jacket splitting was random in nature but could have affected redundant circuits.

This matter represents a design deficiency and if the cable had been used for class lE applications, the safety of operations could have been adversely affected.

This deficiency was noted during the construction phase as a part of routine inspections.

Corrective Action:

All of the Medium Voltage Power Cable (8KV & 15KV) supplied to Duke Power Company with a chlorinated polyethylene jacket has been identified. All remaining cable has been returned to the vendor forrejacketing using a PVC compound. All cable used has been limited to non-class 1E applications.

Duke Power specifications will be revised deleting the chlorinated polyethylene jacketing compound.

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