ML19312D168
| ML19312D168 | |
| Person / Time | |
|---|---|
| Site: | Hartsville  |
| Issue date: | 03/14/1980 |
| From: | TENNESSEE VALLEY AUTHORITY |
| To: | |
| Shared Package | |
| ML19312D167 | List: |
| References | |
| NUDOCS 8003210376 | |
| Download: ML19312D168 (2) | |
Text
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I a 94 , 2 [3 ;'USE'0FcINCORRECT s [10'CFRIPARTj50.55($)) REPORT CONCRETE ~NO.' 3 f(FINAL)1 MIX IN SHIELD BUILDING WALL
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laubject<NCR was/ potentia 11yfreportable'under 10 CFR)Part 50.55(e).; iThisfisithe final lreportion the subject NCR.;
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~N' < \ c LThe 'second 'concreto L pour, vnumber' BlR-2'B,' Jof": the unit;B-1J reactor shield.
M ,' : building"from (--): 21'7." i ot ?(-): 11'7";and from 0 to :360. degrees was _
, - _'placed with Tconcrete mix 300;75)BFW-p ^ (3000. psi concrete) rather than-
,L_ ,chefrequir'edl mix 1401.5,BF (4000_ psi concrete).
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- ; LThe" deficiency wasfdiscovered by the materials en;;ineer who made - . .
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':Cause ofJ the Defic'iency
[W/' (The. materials \ engine' e riresponsibledor pour: number BlR-2B 'faile'd to: Lfollow?procedureiand{ consult'the applicable' construction. drawing for w.f (determinationfof1the: required _' concrete ~mixtfor that_ pour. Asfa result, w che' filled iout 'the pour card for pour BlR- 2B? incorrectly' and the' concrete'~
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Afterfreviewing;the results of the'compressiveistrength_ tests on the 7 fg Q "
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g Q Test;Results and" Corrective-Action-
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2TVA.made compressive strength 1 tes_ts on:three.fsets of cylinder's(taken: W ' c' Jfromlthis~po.ur. 1Thefre'sults/arejshown below. M
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