ML19322B497

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Discusses Problem W/Cracks in Cladding of Primary Loop Piping Reported on 700820 W/Addl Info Provided on 700821. Will Be Followed Up in Subsequent Insps
ML19322B497
Person / Time
Site: 05000268, Oconee
Issue date: 08/21/1970
From: Seidle W
US ATOMIC ENERGY COMMISSION (AEC)
To: James O'Reilly
US ATOMIC ENERGY COMMISSION (AEC)
Shared Package
ML19322B498 List:
References
NUDOCS 7912030370
Download: ML19322B497 (3)


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J. P. C'?.cilly, Chief, Bmeter Inupection nnd Feforccmnt Tranch.

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Liv!:. ion of Cc:glience, Fendquarter.3 QURY !>U'O ?.llW.! - IWS POF 'il LOl'pt'.cl (CCOME LUI? 1), LICM6B 50.f CPp?-33,-

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Ce a ay, cdviced C. M. Murphy, T.enetec N.gecter, fer.hi II, Lt,t crr @s fcund in the claddits; of the Occc.ca 1 priticy loop piping. In n

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tdep'icce cenyce nation on tur,urt 21, 19'70,

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'.'ella, Pr'.ne! pal d old i

Tag'ner, preser.ted cadit'enal inscrra.t'en rolative to the pro'apm. Se i !

l inn uticn avrd]ttale at thic time la nn follovs :

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A: a prt cf t'.e replrcer- :t of the Unnna prirmry caobtat, p'. nyn j

l yith Westind.oune ptunps, four cicht-foot acetions of the prf rary piping hnd "emn cut fron the loop and sent to the EW !:t. Vernca cops for the ir.ntallat.f on of reducing acetions. The pipe had bcen fnbricuted frca 1106, Ornde C, cea-lens ;rnterini end had teen clad vith 108 rAtinle:n u. teel usint; a conicutomatic prececa at the P.W

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2 nb':rton abafs. In reoving the pire, the cladding had Letn re--

roved using r.ir-nre corcing te;d the crxbon'cteel hnd heen cut ueing en exyccetylene torc't.

h cracha vore noted in the claddint; of one cection of pipe 'n n

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her t-affected cono. Uella ctated that he thour):t that the cracka l

tere vinually ddected in the arca xh6re the pipe hed l'ecn cut nt J

the site. Further exenination revealed ndditi3nal cracks in en

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area leyend the hent-nffected zone. A chenient cnalysis una then.

rude of the clad raterial which indiented that the cher.ical com-pocition was out of specification. Neither Lee nor Uelin knew the

.i actuitl resultc of the analysis. A visual inspection' of a ccall crea of the pipe at the cito vns made on /.u,quet 19,1970, but no cracks vere detceted. A crev van sent fron E?N to the site and vna acheduled to start inapecting the reraninin.,; pipe on Aucunt 21, 1970. In respenae, to the innpcetor's quention; Wells stated that-I tho original. p!po npacifications hed required that the ' cladding ha -

innpceted at the crop after fabricatica using both UT itnd PI', hut that he did not hd.ve the recorda at the cite to verify whether i

thic hnd actually been-done.

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  • J. P. O '!'e t ]ly Iue a ;t 21,19*70 In r.20ponr,e to our innpoctor's inquiry, Lao ctated that he could not utnr,-em-e t t w i n + ' v m

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t. Vercon LLop for a routine inapectirn or ;'n':e'c. prirr.ry pipt.ng recoctic vill r,',tnin m:ditional inforr -d'on ca tLo crack problen.

One in.,1ectof ;111 foH ov thlo 7. nt ti'r c'.onely during uhre qrnt in:.; ac'. icab.

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