ML19269F446
| ML19269F446 | |
| Person / Time | |
|---|---|
| Site: | Palisades  |
| Issue date: | 10/09/1979 |
| From: | Boyd D NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | |
| References | |
| PNO-III-79-011, PNO-III-79-11, NUDOCS 7912210041 | |
| Download: ML19269F446 (1) | |
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7-.u FRELIMINARY NOTIFICATION 4F IVENT OR UNUSUAL OCCURRENCE--PNO-111-79-11
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This treliminary.notificaria'n~ constitutes EARLY notice of events of POSSIBII safety or publir int.crext. wi rni ficance. 'Th'e infor=stica presented in an initially received without. verificat. ion or evaluat. ion and is basically all
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CuIiAn~i=.Ia '. Power rompany, PAllaadan Ta c F1 i,t y :
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POSSIBLE NON-CONSERVATIVE SATCTY ANALYSIS At 0800 on netuher 9,1979, the licensee notified the NMO uf a puwwible uuu-ennnervnr i ve an fery annlynin.
To respam,e rn TF. Tnformarinu Nutice No. 70 22 r.ha Corporara Tachnical Enginac. ring Croup revie.vAsi r.h n ma i n a t euni llu.= hreuk inside containment and f ound that one assu=ption was incorrect.
This r.ssumptict voa that when the break netfurred the main feedwater flow Lu the Steam Generatur would be reduced Lo five percent of full flow by the control circuit:7 The analyaia ahuws that thia is true in 1y if a loss of of f-uite power exiuto con-nurre.nt ly with the main ste== line break.
If a loss of eff-site power does not neeur then the cundeusale, puuspw ecuLinue tu feed the Steam Generstur renn1 ring in au nrend.=d bloudown and poveibly in higher contaltuueul presuures thxu originally anal,yr.ari for.
T"n e li cana*. has nor it i erl che. Stare nf Mi chinan.
The plant is currently in a refueling outa;;e and v111 resolve this issue. f.c prior to start-up, i2is inter:ation is current as ot 10:0() a.m. on October 9, 1979.
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Boyd Prcoared By Acting 3rach Chicf 157-0148 157-0148 2166 163 Distribution:
Tran'mitted H St Chairman Hendrie.
Cec:=issivuer Bradford S. J. Chilk SECY Cerm ixxi oner Kennedy Co=rsissioner Ahearne C. C. F-erer, CA C::cissioner Gilin:.ky ACRS (For Distributica)
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H. R. Denton, NER E. L. Ornstein, EDO R. C. DcYoung, NRR J. J. Fouchard, PA R. J. Mattsen, iiRR Lauduw (6 w!ul..u i
N. M. Haller, MPA D. Vassallo, N2R J. J. Cumm n gs, O TA R. G. Ryan, OSP D. Eisenhut., NR'4 E. K. Shapsr. ELD SS 31ds _,,
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V. J. Dircts. N.4SS R. Minuxue, SD S. Levine, PSS II:X005 PRELIMINART NOTIFICATION