ML20083J307

Part 21 Rept Re Defects in Anchor Darling Globe Valves Previously Identified in IE Info Notice 83-70 & GE .Globe Valves Will Be Modified by GE to Assure Valve Operability

ML20083J307
Person / Time
Site:	Clinton
Issue date:	01/09/1984
From:	Hall D ILLINOIS POWER CO.
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20083J320	List: ML20083J307 ML20083J342
References
REF-PT21-83-107-000, REF-PT21-84-107-000 1605-L, PT21-83-107, PT21-83-107-000, U-10119, NUDOCS 8401160283
Download: ML20083J307 (2)

Text

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._ b rn B 1605-L ILLINOl8 POWER 00MPANY ggy y_10139 CLINTON POWER STATION, P.O. BOX 678, CLINTON. ILLINOIS 61727 u

January 9, 1984 Docket No. 50-461 '

MrI James G. Keppler Regional Administrator Region III U.S. Nuclear Regulatory Commission L799 Roosevelt Road Glen Ellyn, Illinois 60137

Subject:

10CFR Part 21 Defect in Anchor Darling Globe Valves at Clinton Power Station

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 previous-ly reported to the Commission by vendors or contractors. In accordance with that agreement, the following information is submitted:

On December 16, 1983, Mr. Glenn G. Sherwood, Manager of Nuclear Safety and Licensing Operation, General Electric Company, informed the NRC Office of Inspection and Enforce-ment, Washington, D.C., of a defect affecting Clinton Power Station (copy attached).

. General Electric has determined that a defect exists in

. Anchor Darling globe valves with anti-rotational devices (stem collars). The report to the NRC stated that a set screw holding the stem collar in position on the valve stem may vibrate loose which allows the key between the stem and stem collar to be displaced. This displaced key allows the stem collar to slide down the stem resulting in the free rotation at the stem rendering the valve inoperable.

8401160283 040109 f/A l

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,.  ; .Mr. Jcmes' G. Ktppler Page 2 Jcnuary 9, 1984 General Electric'is initiating a Field Disposition

. Instruction (FDI) to modify'the Anchor Darling globe valves to assure valve operability. Illinois Power Company is~also

' conducting an evaluation of.the reported condition and will assure.that. adequate corrective action is taken to resolve the problem.

Sincerely yours,

/

D. P. Hall Vice President RDW/ lag

-Attachment cc: .NRC Resident Office Illinois Department of Nuclear Safety Director,. Office of I&E, USNRC, Washington, DC 20555 INPO Records Center l

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