ML19305C372
| ML19305C372 | |
| Person / Time | |
|---|---|
| Site: | Wolf Creek, Callaway, Sterling  |
| Issue date: | 03/20/1980 |
| From: | Petrick N STANDARDIZED NUCLEAR UNIT POWER PLANT SYSTEM |
| To: | Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| References | |
| SLNRC-80-12, NUDOCS 8003260638 | |
| Download: ML19305C372 (1) | |
Text
. _ _ - _.
SNUP/S Stenderdised Nucieer Unit Power Pfent System 5 Choke Cherry Poed Nicholas A. Petrick Rockwine, Maryland 20850 Executige Director (301)869 8010 March 20,1980 SLNRC 80- 12 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
Reference:
(1) SLNRC 79-21, dated 12/6/79: Same subject (2) Westinghouse letter (T.M. Anderson), NS-TMA-2204, to USNRC (V. Stello, Jr.), dated 2/15/80: Same subject
Dear Mr. Grier:
Reference (1) reported a potential deficiency involving the Engineered Safety Features A.ctuation System and described a test sequence that was the necessary corrective action applicable to the SNUPPS plants.
Ref-erence (2) provided the NRC with revised tests that yield more conclusive results.
The SNUPPS utilities are investigating hardware changes that may preclude the need for the tests described in Reference (2).
If such hardware changes are not feasible, the appropriate test sequence from Reference (2) will be incorporated in the procedures for the SNUPPS plants.
l Very truly yours,
/y r
emc Nicholas A. Petrick RLS/vas cc:
Mr. James G. Keppler Director, Region III, USNRC l
Mr. Karl V. Seyfrit, Director, Region IV, USNRC Mr. Victor Stello, Jr., Director, Office of Inspection and Enforcement, USNRC, Washington D.C.
1 l
S 8003260
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