ML19275B697

Final Deficiency Rept Re Existence of Undetectable Failure in Westinghouse Engineered Safety Features Actuation Sys. Addl Testing Procedures Will Be Incorporated Into Station Operating Procedures Prior to Fuel Load

ML19275B697
Person / Time
Site:	Marble Hill
Issue date:	02/07/1980
From:	Shields S PSI ENERGY, INC. A/K/A PUBLIC SERVICE CO. OF INDIANA
To:
References
NUDOCS 8002200474
Download: ML19275B697 (1)

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PUBLIC .

SERVICE INDIANA February 7, 1980

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S. W. Shielcs vice P-estcent E:ectne Sys:e "

Docket Nos.: STN 50-546 STN 50-547 Mr. James G. Keppler, Director Construction Permit Nos.:

U.S. Nuclear Regulatory Com=ission CPPR-170 Region III CPPR-171 799 Roosevelt Road Glen Ellyn, IL 60137 Marble Hill Nuclear Generating Station Units 1&2

Dear Mr. Keppler:

On January 11, 1980, Mr. S. J. Brewer of Public Service Company of Indiana, Inc. (PSI) telephoned your office to notify you of a potentially reportable incident as required by 10CTR50.55(e). The following report resolved that item and constitutes a final report under the Regulation.

In their November 7, 1979 letter (NS-IMA-2150) to your Mr. Stello, Westinghouse reported the existence of an undetectable failure in their Engir.eered Safety Features Actuation System and described the possible consequenc.es of such a failure. That letter also contained the Westinghouse recocmended corrective actions. Appropriate actions, which consist of additional testing procedures, will be incorporated into our station operating procedures prior to fuel load.

If you have any questions, please feel free to contact me.

Sincerely,

, /

S. W. Shields TDG:kr cc: Director of Inspection & Enforcement U.S. Nuclear Regulatory Commission Washington, D.C. 20555 30/7 E. R. Schweibin , P.E. 56 J. J. Harrison /!O 8002200 7 1000 East Main Street. P!ainfield, Indiana 46168 317.,S39 .9611