ML20126C520

RO 80-17/01T:on 800326,S&W Advised That Reanalysis of Seismic Pipe Stress on Main Steam Piping Indicates That for Certain OBE conditions,long-term Criteria Allowable Stress Levels May Be Exceeded

ML20126C520
Person / Time
Site:	Beaver Valley
Issue date:	03/26/1980
From:	Werling J DUQUESNE LIGHT CO.
To:
References
NUDOCS 8004030198
Download: ML20126C520 (2)

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9. 1stien Ltntted State, Noc te4r Re cul atery Cc= m ssion texten i All Park Avefs.se King o f Prusis i.i. Pennsylvanta 19406

Dear Mr. Grier:

In acc.ordaare w 8.th Taehn t e t 8:pec i f i e st i on 6. *8.1. 4 *, M ai t n i s t ra t t wo

.f l a c u9 a e.t w i t h t he Cecerol=, the follawiat ia reparta4 Tht* a.orree wam

s. aver vn ller 'iSC 2 *s ident in spec.t ar, *f r.

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nee.cm.a n, a t G830 bours on W re:h 7 6, 1940.

The Peavne Vallev Ifnte 1 **c h i r ** t -etinee r. Staa* L L'*ha**r.

Fnetocering racearation, haa ed s t ae-A eve that raanstve*= af the =*t=nic ptoe stregg om ensin s t a=es p t r iner, l aad l e s t a a, 'har fa' aortale % rattn*f.

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• M8E) c on i t t ion e, t an at -t.r* c r i t a r t s allewmhta et'***

levate ny be o ce**Ied in the headers th,a t anupare t 5. ma i n etaan enr,ey ya1.,...

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co htm.d vie.b ner,

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are combinel. tha * <-*r pte r a<f cod

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l Sinc. nen.rer valley tra t t 1

is'=h*it dawn far r (unl inst an i ens i n t ema nc e,

i this finding, is no pot ent i al s a f ety ha r a rd a=.ce 19e *<f wi th there D

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4 w, 3,81. Ceter Merch 24, 1940 sves:JAV:822 Pete 2 Remoalysts t o coo t ina: Ins f or the rena l M er o f the ma b sl e==

va lve aree steme piping.

We vill report any oddit tocal firdings that may result from owe ongotos artalysis.

l Very truly yowre,

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J. A. Verting Superintendent ect Director Of N n=cewent 4 Program An=1v9 ts

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Uetted States %4cL*er Regulatory Ceemissten Woohimston, D. C.

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c.,. c D, L. Wissrinters, MVFS t.icensing Project Meneser United States Nucleae Respaletary Commission unshington, D. C.

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- D. A. 'Beebman,1% clear Regislatory Commisaton, MVPS Site inspector C. A. Olsen, Secretary. Prime hrs Coweittee - Ett y,;.'yl.g:.

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