ML19305B956

Deficiency Rept:On 791107,util Informed NRC of Undetectable Failure in Engineered Safety Features Actuation Sys. Corrective Action to Detect Failure by Testing Sequence Will Be Incorporated Into Plant Procedures.Westinghouse Ltr Encl

ML19305B956
Person / Time
Site:	Wolf Creek, Callaway, Sterling
Issue date:	12/06/1979
From:	Petrick N, Petrick N STANDARDIZED NUCLEAR UNIT POWER PLANT SYSTEM
To:
Shared Package
ML19305B953	List: ML19305B956 ML19305B959
References
NUDOCS 8003250393
Download: ML19305B956 (2)

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r v-SVUPPS j SmwhMized Nuduf Umt Power Pfent System 5 Choke Cherry Road Nicholas A. Petrick RockviHe, Maryland 20850 Executiva Director Plo1) seMoto December 6,1979 SLNRC 79- 21 FILE: 0491.10.2 SUBJ: Undetectable Failure in Engineered Safety Features Actuation System '

Mr. Boyce Grier Director, Region I U.S. Nuclear Regulatory Commission 631 Park Avenue King of Prussia, Pennsylvania 19406 Docket Nos.: STN 50-482, STN 50-483, STN 50-485, STN 50-486 Ref: Westinghouse letter (T. M. Anderson), NS-TMA-2150, to USNRC (V. Stello, Jr.), dated November 7,1979, Same subject

Dear Mr. Grier:

0'n November 7,1979, SNUPPS informed the Nuclear Regulatory Commission, Region I Office of Inspection and Enforcement, of a potential deficiency inv~olving the Engineered Safety Features Actuation System. The informa-tion was communicated by telephone to Mr. Tripp of your staff pursuant to 10 CFR 50.55(e).

The referenced letter provided detailed information on the deficiency and recommended corrective action. The corrective action applicable to the SNUPPS plants is a test sequence that will detect the failure in ques tion. This test sequenc'e will be incorporated in the appropriate procedures for the SNUPPS plants.

Veri truly yours, C+< \C(

Nicholas A. Petrick RLS:dck

Enclosure:

Referenced Letter cc: Mr. James G. Keppler, Director, Region . 7, USNRC - w/ encl.

Mr. Karl V. Seyfrit, Director, Region IV, v3NRC - w/ encl .

Mr. Victor Stello, Jr., Director, Office of Inspection and Enforcement, USNRC, Washington, D.C. - w/o encl.

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8003250 393

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• SLNRC 79- 21 Page Two bec: J. E. Arthur RGE w/o J. K. Bryan UE w/o G. L. Koester KGE w/o D. T. McPhee KCPL w/o A. C. Passwater UE w/a G. P. Rathbun KGE w/a J. A. Bailey KGE w/o J. R. Jorgensen RGE w/o D. F. Schnell UE w/o J. L. Sippel XCPL w/o A. F. Jost W w/o J. H. Smith I w/o J. P. Burn Etaff w/a S. J. Seiken Staff w/a M. A. Stiller UE/ Cal w/a W. L. Sheppard UE/ Cal w/a A. L. Wood KGE/WC w/a L. S. Lang RGE w/a G. D. Meier RGE/Ginna w/a D. Naylor KGE/WC w/a R. A. Johnson Staff (NSC) w/a

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