ML20214T559
| ML20214T559 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 05/27/1987 |
| From: | Bailey J SOUTHERN COMPANY SERVICES, INC. |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| Shared Package | |
| ML20214T563 | List: |
| References | |
| GN-1372, NUDOCS 8706100317 | |
| Download: ML20214T559 (2) | |
Text
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a Southern Company Servces, Inc.
Post Offee Box 282 Wrynesboro Georgia so830 Telepto e 404 722-1543 404 722 8943 Vogtle Project May 27, 1987 United States Nuclear Regulatory Commission File: X7BC35 Document Control Desk Log:
GN-1372 Washington, D.C.
20555 NRC DOCUMENT NUMBERS 50-424 AND 50-425 OPERATING LICENSE NPF-68 CONSTRUCTION PERMIT NUMBER CPPR-109 V0GTLE ELECTRIC GENERATING PLANT UNITS 1 AND 2 SUPPORT OF CABLES IN VERICAL CABLE TRAYS Gentlemen:
In letter GN-1247, dated December 22, 1986, Georgia Power Company (GPC) provided the technical justification for the use of Panduit plastic cable ties for the short-term support of Seismic Class 1E cables in long vertical cable trays.
This response addressed all the concerns raised in the Nuclear Regulatory Commission (NRC) letter dated December 3, 1986.
Georgia Power Company also made a commitment to provide the NRC by June 1, 1987, the assessment for adequacy of the cable supports for the long-term, i.e.,
over the life of the facility.
Based on the evaluation of this response, the NRC staff concluded in SSER 5 that the use of Panduit plastic cable ties was an acceptable method of seismically supporting cables in verical cable trays.
The staff identified the long-term adequacy of the plastic cable ties as a confirmatory issue for the period beyond first fuel cycle.
i The methodology used to support the cables in long vertical trays for the long-term will be the same as that used for the short-term, i.e.,
use of cable ties.
However, rather than having to establish the long-term aging and relaxation effects on the Panduit plastic cable ties, GPC elected to use Panduit stainless steel cable ties for the long-term support of cables.
Thus, the long-term aging and relaxation effects on cable tie performance are eliminated as an issue.
Stainless steel ties are not affected by these factors.
0706100317 870527 DR ADOCK 05000424 PDR N
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Page 2 In order to qualify stainless steel ties for support of cables 1.1 long vertical trays, the issues raised by the NRC staff on the short-term support of cables using Panduit plastic cable ties in their _ letter dated December 3,1986, have been also considered.
The enclosed report provides the evaluation of the use of Panduit stainless steel cable ties to support the cables in long vertical cable trays.
Based on our evaluation, we propose to use the Panduit stainless steel cable ties in Unit 1 and Unit 2 as described in the report.
Please inform Georgia Power Company of your acceptance of this solution to the long-term support of cables in long vertical trays.
We have been informed that Stone and Webster has reviewed the report dated May 26,
- 1987, and concurs that it satisfactorily resolves Independent Design Review Observation 22-F11 for the long-term operation of the plant.
If your staff requires any additional information, please do not hesitate to contact me.
.h.
J. A. Bailey Project Licensing Manager JAB:jc Enclosure xc:
R. E. Conway J. P. O'Reilly P. D. Rice L. T. Gucwa R. A. Thomas J. E. Joiner B. W. Churchill M. A. Miller (2)
G. Bockhold, Jr.
NRC Regional Administrator NRC Resident Inspector R. Goddard R. W. McManus D. Feig NORMS
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