ML19343C507
| ML19343C507 | |
| Person / Time | |
|---|---|
| Site: | McGuire, Mcguire  |
| Issue date: | 03/17/1981 |
| 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 8103240396 | |
| Download: ML19343C507 (2) | |
Text
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DUKE Powun COMPANY Powna Butt.ntxo 422 SocTn Cucacu STazzT CHARI.OTTE, N. C 20242 wi we. o. a^ a a c a. s a.
March 17, 1981 WCE PettictNT it.ta=CMt; Ae ta 704 Secame PeoovetioM 371-4083 Mr. James P. O'Reilly, Director c$i' U. S. Nuclear Regulatory Commission k
Region II
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Atlanta, Georgia 30303 I7 MAR 2 31981 * '
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- Re: McGuire Nuclear Station
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Units 1 and 2 Docket Nos. 50-369 and 50-370 N,
Dear Mr. O'Reilly:
Per Mr. T. D. Gibbons request in IE Inspection Report 50-369/81-04, 50-370/81-01 please find attached an amended Significant Deficiency Report SD 360-370/80-02.
Very truly yours, h61/20n 0- lM h 6 lK
. William O. Parker, Jr.
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RWO:ses
. Attachment cc: Director Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission Washington, D. C.
20555 S
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81082.4039(o s
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DUKE POWER COMPANY MCGUIRE NUCLEAR STATION UNITS 1 & 2
' Report Number:
SD-369-370/80-02 Report Date: March 17, 1981 Facility: McGuire Nuclear Station - Units 1 and 2
. Description of Deficiency:
During review of environmental qualification documentation for safety-related i
electrical equipment, it was determined that the steam generator narrow-range level transmitter cables did not meet the environmental qualification require-ments. These cables had been certified for 30 days of post-accident condi-t
-tions instead of the required 120_ days. Sixteen cables in Unit No. I contain-ment are' involved. The cables for Unit No. 2 have not been installed.
- Analysis of Safety Imolication:
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The cable. cercification does not provide adequate assurance that the cables would function properly for the required 120 days in a post-accident environ-ment.
Corrective Action:
The cable in Unit'No. 1-for steam generator level transmitters was replaced
- in August 1980 with new cable having sufficient qualification documentation.
The new cable with a; unique cable identification will also be installed in Unit No. 2 during the normal construction process.
Since the new cable conductor insulation diameter is smaller than the grommet openings in ;the electrical penetration connectors, pigtails of qualified single conductors'with a larger diameter are used to make the' transition between the
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new cable and the electric penetration connectors. The conductors are spliced j
in the electric penetration-junction boxes using Raychem WCSF-N splices-following 1
.the guidelines:of an existing field installation specification.
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