ML20094G186

Part 21 Rept 21-84-10 Re Potential Functional Problem W/Transmitter Amplifier Board Supplied by Rosemount,Inc as Spare Part or Part within Complete Model 1153,Series B Transmitter.Rosemount Informing of Defect Encl

ML20094G186
Person / Time
Site:	Clinton
Issue date:	07/30/1984
From:	Hall D ILLINOIS POWER CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
REF-PT21-84-405-000 21-84-10, PT21-84-405, PT21-84-405-000, U-10184, NUDOCS 8408130238
Download: ML20094G186 (5)

Text

. . p 1606-L ILLIN0/S POWER 00MPANY y-10184 CLINTON POWER STATION. P.O. box 678. CLINTON, ILLINOIS 61727 July 30, 1984 Docket No. 50-461 Mr. James G. Keppler

' Regional Administrator Region III U. S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, IL 60137

Subject:

10CFR Part 21 Defect in Rosemount Transmitter Amplifier Board Functional Problem (21-84-10)

Dear Mr.Keppler:

In Illinois Power Company's letter to Mr. Frank Jablonski, NRC Region III, (Ref. U-10024, 1606-L, dated January 17, 1983), Illinois Power agreed to notify Region III of those 10CFR Part 21 defects that affect Clinton Power Station and that were previously reported to the Commission by vendors or contractors. In accordance with that agreement, the following information is submitted:

On July 19, 1984, Mr. R. C. LaSell, Manager - Nuclear

~

Products, Rosemount, Inc. notified Illinois Power Company Purchasing Department of a potential' defect affecting the

-Clinton Power Station (copy attached).

Rosemount,_Inc. has identified a potential functional problem with an amplifier board possibly supplied to Clinton Power Station as a spare part or as a part within a complete Model 1153, Series B Transmitter.

8408130238 840730 PDR ADOCK 05000461 S PDR g %g l

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l Itr. Jancs..G._Keppler IllinoisiPower Company is conducting an evaluation of the' reported condition to identify.the need for corrective action.

Sincerely yours, D. P. Hall Vice President Attachment GTW/cah cc: NRC Resident Office Illinois Deptartment of Nuclear Safety ,

Director, Office of I&E,'USNRC, Washington, DC 20555 INPO Records Center

,EMoONT INC.

}

.2001 West 78th street cc:n PrairL. Minnesota 55344 U S.A.

Tel. (612) 941 556o TWX 910-576-3103 TELEX 29-0183 084 JUL 24 M 9 57 Rosenietmitme July 19, 1984 Mr. R.A. Parolisi Illinois Power Company Post Office Box 678 Clinton, Illinois 61727

Subject:

Notification Under 10 CFR Part 21 Regulations

Reference:

Your Purchase Order X-03411 Item 01 Gentlemen:

Rosemount has determined that a notification to you, our customer, is required under the regulations called out in 10 CFR Part 21.

This notification is for the following situation.

Recent testing on our Model 1153 Series B indicated that there could be a functional problem with amplifier boards using components from a particular determined lot and manufacturer. Rosemount has identified all boards in this suspect lot with the exception of one. This board may have been supplied to you either in a complete transmitter or as a spare board ordered as our part number 01153-0123-0003.

The amp board or transmitter would have been supplied to you against the above referenced purchase order.

Ths suspected board can be identified visually by inspecting the circuit side of the board, and specifically the three operational amplifiers shown in the enclosed board layout print. The suspect board has Op Amps marked with the letters "PM", in addition to the date code on the top of the can. If your inspection finds this board, we are requesting you replace it with the one we have enclosed and then call Mr. R. Volsted at A/C 612-828-3473 for disposition of the replaced board.

If your inspection effort does-not find the suspect board, we would like you to keep the enclosed amplifier board as a spare against '

your above referenced order. This is offered as the compliments of Rosemount for the inconvenience caused by this notification. .

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• Page 2

• July 19, 1984 Should you have any questions concerning the subject of this letter, please contact the undersigned directly at A/C 612-828-3484 or Mr.

Volsted at the above listed number.

Very truly, R.C. LaSell Manager Nuclear Products i /njb

Enclosures:

Op Amp Locations a

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• OPERATIONAL AMPLIFIER LOCATIONS s,.-

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4 SUSPECT MARKINGS ACCEPTABLE MARKINGS l

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