ML20082P863
| ML20082P863 | |
| Person / Time | |
|---|---|
| Site: | Zimmer |
| Issue date: | 11/29/1983 |
| From: | Williams J CINCINNATI GAS & ELECTRIC CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, E-39, LOZ-83-0231, LOZ-83-231, NUDOCS 8312090216 | |
| Download: ML20082P863 (2) | |
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.'I-THE CINCINNATI GAS. & ELECTRIC COMPANY CINCINNATI, OHIO 45201 November 29, 1983-LOZ-83-0231 J. WILUAM& JR SsNION YlCE PRES'OENT NUCLEAR OPLAAff0NS Docket No. 50-358 U.S. Nuclear Regulatory Commission Region III 799. Roosevelt Road Glen:Ellyn, Illinois.60137 Attention:- Mr. J.G. Keppler Regional Administrator Gentlemen:
RE:
WM. H. ZIMMER NUCLEAR POWER STATION - UNIT 1 10CFR50.55 (e), ITEM E BROWN BOVERI 125VDC CONTROL DEVICE FAILURE ON 6.9KV AND 4.16KV SWITCHGEAR W.O.-57300, JOB E-5590, FILE NO. 956C, E-39
'This letter constitutes an interim report concerning the subject condition reported to the Commission on February 2, 1983.
This condition represents a reportable deficiency under 10CFR50. 55 (e).
Our previous report, LOZ-83-0109, submitted August 26, 1983, stated the corrective actions reauired to resolve this condition included inspection and adjustment of all-Brown Boveri Electric (BBE) 4.16kV and 6.9kV circuit breakers-per the BBE Instruction J
Bulletin IB-8303.
However, upon inspection of some of the 4.16kV breakers, it was discovered that they did not all have lever stop i
adjustments as shown in IB-8303.
It was determined that the P
instruction bulletin only addressed HK breaker types 7.5kV' through 15kv, 500'to 750 MVA, 5HK350-3000A and all HKV circuit breakers.
A review of circuit breakers at Zimmer indicates'only 25 of our breakers are of the type which potentially have the g
reported deficiency.
BBE has not experienced any problems with the control devices on the other types of HK circuit breakers.
I Inspection and adjustment of the applicable circuit breakers is continuing.
A final report will be submitted upon completion of the corrective actions.
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gr Mr. J.G. Keppler Regional-Administrator November-29,.1983 LOZ-83-0231 Page 2 We trust the above will be found acceptable as an interim report under 10CFR50.55 (e).
Very truly yours, THE CINCINNATI GAS & ELECTRIC COMPANY s
By 1/l;n LLIAMS, 35.,
SENIOR VICE PRiSIDENT DJS/sfr cc:
NRC Office of Inspection & Enforcement Washington, D.C.
20555 NRC Resident Site Supervisor ATTN:
W.M. Hill NRC Zimmer Project Inspector, Region III ATTN:
E. R. Schweibinz
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