ML20099L156
| ML20099L156 | |
| Person / Time | |
|---|---|
| Site: | Vogtle  |
| Issue date: | 11/13/1984 |
| From: | Foster D GEORGIA POWER CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| GN-438, IEB-84-02, IEB-84-2, NUDOCS 8412010025 | |
| Download: ML20099L156 (2) | |
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.'. Route 2, Box 299AGeorgia Power Company.
- Waynesboro, Georgia 30830 7 Telephone 404 554-996t, Ext 3360..
404 724-8114. Ext. 3360-W^
. Georgia Power '
j andProjectp g
' o. o.ro ier.
[c*ySg"lg9 Vogt!e Project l
November 13, 1984
.. United States Nuclear Regulatory Conunission
Reference:
Office of Inspection and Enforcement RII: JPO:
Region II - Suite 2900 50-424, 50-425
-101 Marietta Street, Morthwest Atlanta, Georgia 30323 File:
X7BC24 Log:
GN-438 Attention: Mr. James P. O'Reilly By letter dated July 10, 1984 (File:
X7BC24, Log: GN-386), Georgia e
Power Company originally addressed issues raised in-I AE Bulletin 84-02',
entitled " Failures of General Electric Type HFA Relays in Use in Class 1E Safety System."
The purpose of this letter is to provide you with further information regarding Georgia Power Company's review of the utilization of these relays.
At Georgia Power-Company's instructions, Westinghouse Power Corporation has performed a review of 'similar relays, specifically relays performing similar functions as do the GE HFA relays and which use similar materials.
As a result of this review, Westinghouse L has reported that AC and DC relays used in the Reactor Protection System contain parts made from Lexan and Nylon materials.
These relay components include contact actuating arms, relay coil tenninal strips, relay covers, and coil bobbins.
After evaluation of relays containing these materials, Westinghouse has reported that there is no evidence that the. relays used in the Reactor Protection System are prone to the ~ types - of malfunction-and failures experienced by GE relays and noted in I AE Bulletin 84-02.
The Westinghouse evaluation establishes that the relays used in the-Reactor Protection System differ significantly from the GE relays in
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the composition of the 'Lexan/ Nylon materials and in the operating
/ temperature to which the relays will be subjected.
The difference in temperatures -is attributable to the. fact that the Reactor Protection System. instrumentation and control circuitry is located in the Control Room.
Georgia Power Company will conduct periodic surveillance tests of the Westinghouse relays.
These tests will insure that malfunctioning relays -wil1 ~ be detected and repaired or replaced, as necessary, in order to insure reliable and functional performance of the system.
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This response contains no proprietary information and may be placed in the NRC Public Document Room.
Very uly y rs D. O. Foster REF/D0F/tdm D. O. Foster states that he is the Vice President and Project General Manager of the Vogtle Electric Generating Plant and is authorized to execute this oath on behalf of Georgia Power Company and that to the best of his knowledge and belief the facts set forth in this letter are true.
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GPC:
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Sworn to and subscribed before me this /M day of November,1984.
06.c2 tubal $ $
Notary 9flbli6', State of Georgia at Large My Commission Expires:
4/11/88 xc:
U. S. Nuclear Regulatory Commission Document Control Desk Washington, D.C.
20555 R. J. Kelly D. L. Kinnsch (BPC)
R. E. Conway J. L. Vota (W)
G. F. Head L. T. Gucwa J. T. Beckham C. E. Belflower R. A. Thomas M. Malcom D. E. Dutton G. Bockhold W. F. Sanders (NRC)
P. D. Rice R. H. Pinson C. S. McCall (OPC) 8.'M. Guthrie E. L. Blake, Jr. (Shaw, et. al.)
E. D. Groover J. E. Joiner (Troutman, et. al.)
J. A. Bailey D. C. Teper (GANE)
- 0. Batum L. Fowler (LEAF)
H. H. Gregory T. Johnson (ECPG)
W. T. Nickerson G. A. McCarley D. R. Altman