ML19249B667
| ML19249B667 | |
| Person / Time | |
|---|---|
| Site: | 05000514, 05000515, Trojan File:Portland General Electric icon.png |
| Issue date: | 07/23/1979 |
| From: | Goodwin C PORTLAND GENERAL ELECTRIC CO. |
| To: | Engelken R NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION V) |
| References | |
| NUDOCS 7909040652 | |
| Download: ML19249B667 (1) | |
Text
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Port!arti General Electric Company
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July 23, 1979
-x Mr. R. 11. Engelken, Director l'
US Nuclear Regulatory Commission, Region V 1990 North California Blvd.
Walnut Creek, California 94596 L.. a i r -
NRC II: Bulletin 79-11 identified a prGblem with faulty overcurrent trip devices in circuit breakers for engineered sarety systens.
Westinghouse Type DE-75 and DB-50 breakers were the specific models having the problem. We have revicwed this bulletin for applicability to Tro}an and have concluded that it is not applicable.
We do not employ Westinghouse circuit breakers in safety-related systens nor do we intend to use them in the future The only exception is that Westinghouse breakers are used as reactor trip breakers, however, as the bulletin paints out this application does not require the over-current trip feature that is the source of the problem.
Sincerely,
. /w/
C. Goodwin, Jr.
Assistant Vice President Thermal Operations 6 Maintenance q,-(.
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L. Williams D..T. Broehl R.
L. Sullivan S. L. Loy S. R.
Christensen Nuclear Operations Board Trojan Operating Committee Plant Review Board L. W.
Erickson L Frank, Director, DOE /EFSC Office of Management Infornation and Program Control NRC Resident Inspector g.,3 3 ; A., p File d u ' t.-
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