ML19329B235
| ML19329B235 | |
| Person / Time | |
|---|---|
| Site: | Davis Besse  |
| Issue date: | 09/01/1978 |
| From: | Moseley N NRC OFFICE OF INSPECTION & ENFORCEMENT (IE) |
| To: | Williamson J TOLEDO EDISON CO. |
| Shared Package | |
| ML19329B236 | List: |
| References | |
| NUDOCS 8001310585 | |
| Download: ML19329B235 (2) | |
Text
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gd ~}fi/.au SEP 01 1978 Toledo Edison Ccepany Docket No. 50-345 ATTih Mr. J. ililliancon Frasident and Chief Executive Edison Plaza 300 Padison Avenue Toicdo, O!! 43G52 Gentlemen:
Inspectors fron our Region III (Chicago) offico recently ccepleted a special inspectica to review a reportable cccurrence involving design and installation defects accociated with the seq 2ncer logic of the Sr.fety Featura Acttation Systcm. The findings of this inspection, which included iteus of noncomoliance, were reviewad with the Plant Superin-tendant during the inseccticn and utre discusc0d by r4r. Kar,lar, Director, Regioa III and r.cmbers of his staff wii.h Toledo E lf son Corporate racagemant on August 15, 1973. The itens of noncnocliance identified during th.e inspection are listed in Appindix A to tnis letter.
Cur findings indicated tnat modifications rcade to the sequencer logic portions of ths Safety Featurc ".ctuation Systa : t;ere cor.nleted on February 12, 1977, and taat the startup chuci:-cut was cccpicted on February 14,1977. This startup c!;ech-cut did not detect tha existing wiring errors. Tne praoperational test perforced on this system was completed on February 23, l#7, and did not indicate a.e/ syster, opera-bility proble:.,s.
In cdJitica a schece check uas nda na the ro!ifica-tion, which, indicated no uiring errcrs.
He'.. aver, on June 2,1973, during the performance of a surveillance test c1 a partica of the Safety Feature Actuation Sjsten, the prebica with the se,u:ncer ss finally identifiaj.
Bec:iuso of the significance of t.% defects with the sccmncer lop,ic c7 the Safety Featura Actucticn Systua, the anforc:e2nt csrects of this case have been escalatcd frca the ac. lienal effice to :h.e.icuarters for nandling.
In addition to tne need for correcsive acticas recariinc the snecific iters of nonco.ciianca listml in N. ix 1.,
va :r' cr.ccer.cd a'.0ut tt bu efft.ctivenass of your naqagz: ant cc.. tral c tar twLit.) sc;ivities.
Cer.s.quaatly, in your re;iy, ycu chculd discuss tSo ac.ians :at.M cr n..
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planned to improve this area. Specifically describe the additional action planned or taken to ensure that:
- 1) scheme checks of systems are performed in the depth recuired by your administrative procedures and,
- 2) system test procedures are written and reviewed to assure that plant operations are not dependent on undertested systecs, equipment, or components.
70ur written reply to this letter and tiotice of Violation and the findings of our continuing inspections of your activities will be considered in determining whether further escalated enforcement action such as Civil Penalties or Orders may be required to assure future compliance.
i In accordance with Section 2.790 of the flRC's Rules of Practice, Part 2, Title 10, Code of Federal Regulations, a copy of this letter and the enclosure will be placed in the I;RC's Public Document Rcom.
Sincerely, I
fl. C. !'oseley, Director Division of Reactor Cnerations Inspection Office of Inspection and Enforcecent f
Enclosure:
. Distribution:
Appendix A, l'otice PDR IE Files of Violation
?! SIC Leerrtral Files (uellow)
LPDR X00S Reading FiIe I
j TIC EDO Reading File State of Ohio IE Reading File J. G. Davis C. florelius, RIII N. C. !!oseley, OIE F. Ingram, PA J. P. flurray, ELD J. Lieberman, ELD M. Grossman, ELD L. Engle, DOR:flRR i
J. Crooks, !1IPC i'
T. J. !!cTiernan, IA l
W. P. Ellis
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T. W. Brockett l
G. R. Klingler, ROI:IE t
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