ML20207E645

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Submits Correction to Insp Rept 50-341/98-15 Issued on 981207.Rept Incorrectly Documented That Loose Internal Sleeving on Turbine Control Valve Caused Power Oscillations Greater than 10% During Plant Operation
ML20207E645
Person / Time
Site: Fermi DTE Energy icon.png
Issue date: 02/22/1999
From: Anton Vegel
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
To: Gipson D
DETROIT EDISON CO.
Shared Package
ML20207E650 List:
References
50-341-98-15, NUDOCS 9903110026
Download: ML20207E645 (10)


See also: IR 05000341/1998015

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UNITED STATES

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  • LISLE,ILLINots 60532-4351
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, Mr. D. R. Gipson'

Senior Vice President

' Nuclear Generation

The Detroit Edison Company

6400 North Dixie Highway

Newport, MI 48166

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SUBJECT: CORRECTIONS TO INSPECTION REPORT 50-341/98015(DRP)

Dear Mr. Gipson:

On December 7,1998, the NRC issued Inspection Report 50-341/98015. In Section 01.1 and

in the executive summary of the report, it was reported that a fire existed in an emergency

diesel generator control panel when, in fact, only smoke had been seen coming from the panel.

Further, in Section M3.1 and in the executive summary, it was incorrectly documented that

loose intemal sleeving on a turbine control valve caused power oscillations greater than

10 percent during plant operation when, in fact, worn threads in a tongue block used to engage

the valve spindle caused power fluctuations of less than 10 percent during plant operation.

Finally, in Section E2.1 and in the executive summary, it was incorrectly reported that the scoop l

tube was locked when the unit was returned to service when, in fact, it was unlocked during

plant restart but was returned to the locked position shortly after restart. We are enclosing

corrected sections of the report.  !

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in accordance with 10 CFR 2.790 of the NRC's " Rules of Practice," a copy of this letter and its f

enclosure will be placed in the NRC Public Document Room. J

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Sincerely,

Anton Vegel, C

Reactor Projects Branch 6

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Docket No.: 50-341

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License No.: NPF-43

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Enclosures: Corrections to inspection

Report 50-341/98015(DRP) j

See Attached Distribution

9903110026 990222

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R. Gaston, Compliance Supervisor

R. Whale, Michigan Public Service Commission

Michigan Department of Environmental Quality ,

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February 22, 1999

Mr. D. R. Gipson

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Senior Vice President- '

Nuclear Generation -

The Detroit Edison Company

'6400 North Dixie Highway -

Newport, MI 48166

SUBJECT: CORRECTIONS TO INSPECTION REPORT 50-341/98015(DRP)

Dear Mr. Gipson:

' On December 7,1998,~ the NRC issued Inspection Report 50-341/98015. In Section 01.1 and

' in the executive summary of the report, it was reported that a fire existed in an emergency

diesel generefor control panel when, in fact,.only smoke had been seen coming from the panel.

Further, in Section M3.1 and in the executive summary, it was incorrectly documented in the

report that loose internal sleeving on a turbine control valve caused power oscillations greater

than 10 percent during plant operation when, in fact, wom threads in a tongue block used to

engage the valve spindle caused power fluctuations of less than 10 percent during plant

operation; Finally, in Section E2.1 and in the executive summary, it was incorrectly reported

that the scoop tube was locked when the unit was retumed to service when, in fact, it was

, unlocked during plant restart but was returned to the locked position shortly after restart. We

are enclosing corrected sections of the report.

In accordance with 10 CFR 2.790 of the NRC's " Rules of Practice," a copy of this letter and its

- enclosure will be placed in the NRC Public Document Room.

Sincerely,

/s/ A. Vegel

Anton Vegel, Chief

Reactor Projects Branch 6

Docket No.: 50-341

License No.: NPF-43

, Enclosures: Corrections to inspection

Report 50-341/98015(DRP)

See Attached Distribution

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NAME- CPhillips/mi M AVegel - /hl

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OFFICIAL RECORD COPY

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P. Marquardt, Corporate Legal Department

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' Emergency Management Division, MI Department -

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