NRC-83-0013, Interim Deficiency Rept Re Undetectable Failure in Westinghouse Solid State Protection Sys.No Change in Status Since 820903 Rept.No Design Changes Expected within Next 6 Months.Followup Rept Will Be Submitted by 830902
| ML20071F111 | |
| Person / Time | |
|---|---|
| Site: | Wolf Creek, Callaway, 05000000 |
| Issue date: | 03/03/1983 |
| From: | Petrick N STANDARDIZED NUCLEAR UNIT POWER PLANT SYSTEM |
| To: | Jay Collins, James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III), NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, SLNRC-83-0013, SLNRC-83-13, NUDOCS 8303150442 | |
| Download: ML20071F111 (1) | |
Text
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5 Choke Cherry Road NichatJ EY gv;iggrend 20:s0 March 3, 1983 Executive Director SLNRC 83- 0013 FILE: 0491.10.2 SUBJ:
Interim Report: Undetectable Failure in Solid State Protection System, 10 CFR 50.55(e) Report 82-2 Mr. James G. Keppler Administrator, Region III U.S. Nuclear Regulatory Commission 799 Roosevelt Road Glen Ellyn, Illinois 60137 Mr. John T. Collins 3 Administrator',' Region IV U.S. Nuclear Regulatory Commission Suite 1000, Parkway Central Plaza Arlington, Texas 76012 Docket Nos. ST 50-482 and STN 50-483
References:
- 1) Letter, SLNRC 82-036, dated September 3,1982, N. A. Petrick (SNUPPS) to NRC, IE:III and IV
- 2) Westinghouse (Rahe) letter, NS-EPR-2638, to NRC (DeYoung) 8/6/82 Gentlemen:
Reference 1 provided an interim 50.55(e) report concerning a potential defic-iency involving an undetectable failure in the Westinghouse Solid State Pro-tection System (SSPS). There has been no change in the status of the issue since that report.
As discussed in Reference 2, Westinghouse is continuing to evaluate the need for design changes in the SSPS.
No design change recom-mendations are expected from Westinghouse within the next six months.
The SNUPPS Utilities will continue to review recommended revisions to testing procedures and possible design changes to correct this deficiency and will keep the NRC informed regarding the actions taken relative to this matter.
A followup report will be submitted by September 2,1983.
Very truly yours, EMw f
Nicholas A. Petrick 7
MHF/bds/la2 cc:
G. L. Koester KGE J. Konklin NRC-Region III D. T. McPhee KCPL J. H. Neisler NRC/ CAL D. F. Schnell UE Record H. W. Roberds NRC/WC B303150442 930303 PDR ADOCK 05000482 S