ML20032C518
| ML20032C518 | |
| Person / Time | |
|---|---|
| Site: | Mcguire |
| Issue date: | 11/02/1981 |
| 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, NUDOCS 8111100523 | |
| Download: ML20032C518 (2) | |
Text
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'h}yER COMPANY ATLAIN
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Mr. James P. O'Reilly, Director
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101 Marietta Street, Suite ~i100 f
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Atlanta, Georgia 30303 "k b s macuAt UGM[Qgg Re: McGuire Nuclear Station
'Q) pM Unit 2 Docket No. 50-370
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Dear Mr. O'Reilly:
Pursuant to 10 CFR 50.55e, please find attached Significant Deficiency Report SD 370/81-09 concern *ng Rockbestos Cable (Model RSS-6-104) vsed for the McGuire Unit 2 High Range In-Containment Radiation Monitors.
V y truly yours, p
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William O. Parker, Jr.
PBN/smh Attachment cc: Director Ms. M. J. Graham Office of Inspection & Enforcement NRC Resident Inspector U. S. Nuclear Regulatory Commission McGuire Nuc1 car Station Washington, D. C.
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S'l L nUP 6111100523 911102 C
PDR ADOCK 05000370 S
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McGUIRE NUCLEAR STATION REPORT NUMBER:
SD-370/81-09 REPORT DATE: November 2, 1981 FACILITY: McGuire Nuclear Station, Unit 2 IDENTIFICATION OF DEFICIENCY: High range in-containment radiation monitor cable is not qualified for all postulated LOCA environments per General Atomic letter dated September 23, 1981.
INITIAL REPORT:
On October 15, 1981, A. Ignatonis, NRC Region II, Atlanta, Georgia, was notified of the deficiency by W. O. Henry and T. C. McMeekin of Duke Power Com-pany, Charlotte, N.C.
COMPONENT AND/OR SUPPLIER: The component identified as having a deficiency is Rockbestos Cable, Model RSS-6-104, supplied by General Atomic Company for the high range in-containment radiation monitors.
DESCRIPTION OF DEFICIENCY: Due to a manufacturing deficiency, the identified cable is not fully qualified for all postulated LOCA environments. There is approximate-ly 300 feet of this cable associated with each high range in-containment radiation monitor. There are two such monitors located inside the McGuire Unit 2 containment.
ANALYSIS OF SAFETY IMPLICATIONS:
If a loss of coolant accident occurred and the cable was subjected to the worst case postulated accident conditions, the post accident monitoring function provided by the high range in-containment mrnitors could be degraded or lost.
CORRECTIVE ACTION: The subject cable will be replaced prior to fuel load with qualified cable to be supplied by General Atomic.
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