ML20058J075
| ML20058J075 | |
| Person / Time | |
|---|---|
| Site: | Fermi  |
| Issue date: | 07/30/1982 |
| From: | Wells D DETROIT EDISON CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, EF2-59382, NUDOCS 8208090154 | |
| Download: ML20058J075 (1) | |
Text
i Donald A. Wells f
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2000 Second Avenue 31 3-July 30,1982 EF2-59382 Mr. James G. Keppler, Regional Administrator Region III U.S. Nuclear Regulatory Ccmnission 799 Roosevelt Road Glen Ellyn, Illinois 60137
Subject:
Interim Report of 10CFR50.55(e) on Reactor Mode Switch Failure (#73)
Dear Mr. Keppler:
On July 1,1982, Detroit Edison's Mr. H.A. Walker, Supervisor-Construction Quality Assurance, telephoned Mr. H. Wescott of NRC Region III-to report on a problem with reactor mode switch failure at the Fermi 2 site.
The switch is frozen in one position, and cannot be placed in other modo selections. In addition, scme of the contacts would not maintain their position during operation. For example, a contact "normally open" for a made selection would be open, and when the switch was moved to another pusition and returned the contacts would remain closed. The switch had failed on a previous occasion and had been repaired by General Electric.
This could be a problem with~the design of the switch. _An investigation of the problem'is continuing.
Another report on this item, either interim or final, is schc<luled to be
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sent to you on or before November 24, 1982. If you have questions concerning this Iratter, please contact Mr. CtM. Trahey, Assistant Director-Project Quality Assurance.
I Very truly yours,
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l DAW /DEP/cp cc: Mr. Richard DeYoung, Director i
Office of Inspection and Enforcement
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l Division of Reactor Inspection Programs
. ashington, D.C. 20555 W
Mr. Bruce Little, Resident Inspector U.S. Nuclear Regulatory Ccumission I-6450 North Dixie Highway l
Newport, Michigan 48166 8208090154 820730 PDR ADOCK 05000341 AUG S N'g
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