ML20028E838

Interim Deficiency Rept Re Potential for Certain Westinghouse Mfg Gate Valves to Indicate Closed Prior to Valve Disc Fully Isolating Flow.Initially Reported on 821222.Wiring May Require Mods.Next Rept by 830422

ML20028E838
Person / Time
Site:	Marble Hill
Issue date:	01/18/1983
From:	Shields S PSI ENERGY, INC. A/K/A PUBLIC SERVICE CO. OF INDIANA
To:	James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
References
10CFR-050.55E, 10CFR-50.55E, S82-32, SVP-0003-83, SVP-3-83, NUDOCS 8301280230
Download: ML20028E838 (2)

Text

l o j PUBLIC SERVICE INDIANA S. W. Shields January 16, 1983 senior vice Preskier.t - S82-32 Nuclear Division SVP-0003-83 Mr. James G. Keppler, Docket Nos.: STN 50-546 Regional Administrator STN 50-547 U. S. Nuclear Regulatory Commission Construction Permit Nos.:

Region III CPPR - 170 799 Roosevelt Road CPPR - 171 Glen Ellyn, Illinois 60137 Marble Hill Nuclear Generating Station - Units 1 and 2

Dear Mr. Keppler:

On December 22, 1982, Mr. L. G. Yeager of Public Service Company of Indiana, Inc. (PSI) notified your office of a potentially reportable item as required by 10 CFR 50.55(e). Westinghouse notified PSI of the potential for certain Westinghouse manufactured gate valves to indicate they are " closed" prior to the valve disc fully isolating flow. Should the valve stall or bind following the premature indication, the plant operator would have an inaccurate indication of the true valve position.

Depending on the valve application and consequences of inaccurate closure indication, the wiring of certain valves may need to be modified to meet operational safety requirements. A plant-specific review for Marble Hill was performed by Westinghouse and identified valves 8802A, 8802B, 8809A, 8809B, 8835, and 8840 as requiring modification. For these valves, incorrect position indication by itself causes an unacceptable situation that violates the established licensing basis. Affected valve applications where other means of flow indication or flow isolation is available have not yet been identified.

This letter is intended to fulfill the requirements of an interim report as required by 10 CFR 50.55(e). A further report will be filed on or before April 22, 1983. If you have any questions regarding this matter, please contact me at your convenience.

Sincerely,

• /

9301280230 G30118 ,

PDR ADOCK 05000546 ,

g S PDR /,

S. W. Shields SWS/LGY/bak  !

P. O. Box 190, New'Nashington, Indiana 47162 812. 289.1000 JAN 211983

e PUBLIC SERVICE INDIANA Letter: J. G. Keppler January 18, 1983 S82-32 SVP-0003-83'

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cc: Director oE Inspection and Enforcement-U. S. Nuclear Regulatory Commission Washington, D. C. 20555 J. E. Konklin J. J. Harrison I

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