ML20212G022

Forwards Insp Rept 50-483/99-11 on 990812-20.No Violations Noted.Team Found,Weakness in flow-accelerated Corrosion Monitoring Program Resulted in No Previous Insp of Pipe Segment Which Failed

ML20212G022
Person / Time
Site:	Callaway
Issue date:	09/22/1999
From:	Johnson W NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV)
To:	Randolph G UNION ELECTRIC CO.
Shared Package
ML20212G027	List: IR 05000483/1999011 ML20212G022
References
50-483-99-11, NUDOCS 9909290058
Download: ML20212G022 (5)

See also: IR 05000483/1999011

Text

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UNITED STATES

a ' ,:' NUCLEAR REGULATORY COMMISSION

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611 RYAN PLAZA DRIVE, sulTE 400

,,,,,' ARLINGTON, TEXAS 76011-8064

SEP 2 21999

Garry L. Randolph, Vice President and

Chief Nuclear Officer

Union Electric Company

P.O. Box 620

Fulton, Missouri 65251

SUBJECT: NRC SPECIAL INSPECTION REPORT NUMBER 50-483/99-11

Dear Mr. Randolph:

This refers to the special inspection conducted on August 12-20,1999, at the Callaway Plant.

The inspection focused on the causes, circumstances, and corrective actions associated with

the August 11,1999, rupture of a 6-inch drain line between a moisture separator reheater first

stage reheater drain tank and feedwater Heater 6B.

Following the event, operator performance in shutting down the unit was good. The team found

that a weakness in your flow-accelerated corrosion monitoring program resulted in no previous

,

inspections of the pipe segment which failed. The enclosed report presents the results of this

inspection.

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

enclosure, and your response, if requested, will be placed in the NRC Public Document Room.

Should you have any questions concerning this inspection, we will be pleased to discuss them

with you.

Sincerely,

b -

Wilh m D. Johnson, Chief

Project Branch B

Division of Reactor Projects

Docket No.: 50-483

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License No.: NPF-30

Enclosure: l,

NRC Inspection Report No. I

50-483/99-11

9909290058 990922

PDR ADOCK 05000483

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Union Electric Company -2-

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. cc w/ enclosure:

Professional Nuclear Consulting, Inc.-

19041 Raines Drive

Derwood, Maryland 20855

John O'Neill, Esq.

Shaw, Pittman, Potts & Trowbridge

2300 N. Street, N.W.

Washington, D.C. 20037

~ H. D. Bono, Supervising Engineer

Quality Assurance Regulatory Support

Union Electric Company

P.O. Box 620 .

Fulton, Missouri 65251

Manager - Electric Department

Missouri Public Service Commission

301 W. High .

P.O. Box 360

Jefferson City, Missouri 65102

Ronald A. Kucera, Director

of Intergovernmental Cooperation

P.O. Box 176

Jefferson City, Missouri 65102

Otto L. Maynard, President and -

~ Chief Executive Officer

, Wolf Creek _ Nuclear Operating Corporation  !

!

P.O. Box 411

' Burlington, Kansas 66839

Dan I. Bolef, President

j

! Kay Drey,-Representative

~ Board of Directors Coalition i

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for the Environment

6267 Delmar Boulevard '

University City, Missouri 63130

. Lee Fritz, Presiding Commissioner

Callaway County Court House

10 East Fif th Street ,

Fulton, Missouri 65151'

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. Union Electric Company' -3-

Alan C. Passwater, Manager -

Licensing and Fuels

' AmerenUE

One Ameren Plaza

.1901

Chouteau Avenue I

P.O. Box 66149 -

St. Louis, Missouri 63166-6149 --

J. V. Laux, Manager -

Quality Assurance

Union Electric Company

P.O. Box 620

' Fulton, Missouri 65251

Jerry Uhlmann, Director

State Emergency Management Agency

. P.O. Box 116

' Jefferson City, Missouri 65101

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Union Electric Company -4-

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SrP 2 21999

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DRS Director RITS Coordinator

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