ML19308D683
| ML19308D683 | |
| Person / Time | |
|---|---|
| Site: | Crystal River  |
| Issue date: | 11/05/1973 |
| From: | Beratan L US ATOMIC ENERGY COMMISSION (AEC) |
| To: | Keinmuth G US ATOMIC ENERGY COMMISSION (AEC) |
| Shared Package | |
| ML19308D679 | List: |
| References | |
| NUDOCS 8003120796 | |
| Download: ML19308D683 (2) | |
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t G. W. Reinanth, Chief, Technical Assistance Branch, m T?'OI';?: I:iSP1:OtIO" - W)HDA N.Et C0'J02iTION - C2TSTAL RIVUA III D'3C.C :10..i.:- 'm Cn Cc:o;ar 2/. 2.:. l'?!3 I :te: c- >nnied U. ?. :. ran en en !".wni $n to Le C-/n t r '_ r;'-r :-
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3 facility.
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'd-ef t t c. tr:-1:n int.: c: C_j f ul '.iv ar 1 ci 2.:rso Mtic Island, I van rue;u.:r;.ai to rm.r.1 cne cor:- uction ;.r..cacar:s a w t..2 QA proar:rn for tite co atruct.ica of t.;2 m;; girl.:r.
T.ac cajactive of tac insmetion was to co. firm thnt cppropri:ita construction pr:ctices vare used to preve.it th:. Icr nti:2 Of 7: ids.in c.
c..crata in cri.ci.11 are a cf the ring ;-ircer, i.:... Sc;inc t!.a hearir.s plates sne ia ether arcio cc ':ested by a large.==her of rainforcin; bars.
The rin.: 31rder 1: 17'-6" hi -h :nd is being poured in cix lif ts and v}
in ci :t, d: Tac scy:. uts.
t.: 6: ti. a of tSc ir. p accios, tua three botton lift! had bcca pour.a.d (the battuu tcn fcat). Preparation for the fourth li::t ;c3 undotvay durin;- cl.a i.::ccrion. To face.12.tnte the placina, of cencretc in the enusrrictac anacca of tte ring afrder, a crecial concretc =t:t was being used. The ua:cinum anaregate size was li'..itad to 1/2 inch c d the cencreto alu-o to four iaches.
Picni;: lass vindows ' arc incert:.d in the sucel forts at the location of the bearing pistes to alicu the quality Control (CO) 'copla to observe ths pincer:ent of the concretc in critical arecs.
Tae Quality Assurance (RA) records for the first t*u ce lifts were audited and the fo11:: vin 3 itc=s vore noted as being cuts sadf:ta:
1.
The specifiestions requires that arc ey 5.2 placad on the curf 02 of the oldar c ncrete 5efore a lif t of fre3h concrets is nIa. ei upon it.
T.'c r.a sired ?.3 drr stre :ath of the con: rate' '.: 3 0" ' a i and the cubc =trcnP,th of the epo:cy is required to be 8000pni. The QA records re n.a1 that it was n.fficult to attain the 600^791 specified in the specificisticas. Most of the taat result;. sera in the ran:;a of 7350 psi. A racolution of this problem was colayin?,
tha pouring of additonal concreta.
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G. ii. Rainmuth.
'la vera informed that an engineering disposition of this ornbic.
' tad boca made by Gilbert Associatas.
The disposition was re cruce to ;,ny t.ast the cpoxy was not recuired to ha any strue.er taan cae concreto.
Suppcrting docurentation vill be a ra11able for-tha inspector to review at the next regular inspection of this facility.
2.
Ic was Ecuad t':st UC.it 511 dated Septand2cr 13,1973 has not been clocad cuc.
It :::s c1M =ed by tite Q.L nerso: mal at tite site that an en?ina. :rir.3 Emeniti:r. had
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nCa rioce::.cn: t. ion hc.i no; y.::
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Ihia 2.ta:a all be r.mc red at cite l
r.m re ular ins; ection of this facility.
If t*.; cara and control e=ercised by the licensee in the. pourin-of ena first :arca lifts of the ring girder continues no construction anc....11cs nLould be esperienced.
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/ 14 1 L. L. Borstan Sanier Structural Eri w Technical Assistance 3 ranch, RO l
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/1 LL3eratan:arj 11/5/73
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