ML20206G404

SER Supporting Employee Concern Element Rept Co 10107, Backfill W/1032

ML20206G404
Person / Time
Site:	Sequoyah
Issue date:	11/04/1988
From:	NRC OFFICE OF SPECIAL PROJECTS
To:
Shared Package
ML20206G037	List: ML20206G034 ML20206G298 ML20206G302 ML20206G306 ML20206G315 ML20206G319 ML20206G325 ML20206G330 ML20206G337 ML20206G344 ML20206G348 ML20206G352 ML20206G358 ML20206G363 ML20206G366 ML20206G370 ML20206G374 ML20206G380 ML20206G385 ML20206G392 ML20206G396 ML20206G404 ML20206G408 ML20206G410 ML20206G416 ML20206G419 ML20206G426 ML20206G429 ML20206G435 ML20206G438 ML20206G447 ML20206G453 ML20206G457 ML20206G459 ML20206G462 ML20206G466 ML20206G472 ML20206G480 ML20206G486 ML20206G497 ML20206G502 ML20206G509 ML20206G519 ML20206G524 ML20206G529 ML20206G534 ML20206G539 ML20206G543 ML20206G550 ML20206G559 ... further results
References
NUDOCS 8811220264
Download: ML20206G404 (1)

Text

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SAFETY EVALUATION REPORT BY THE OFFICE OF SPECIAL PRORCTS EMPLOYEE CONCERN EttMENT REPORT CO 10107 I "BACKFILL WITH 1632"

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TENhESSEE VALLEY AUTHORITY SEQUOYAk NUCLEAR F0WER PLANT UNITS 1 & 2 DOCKET NOS. 50-327 AND 50-328 i

!. Subfect  ;

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! Categcry: Construction (20000) i

' Subcategory: Soils (10100) i Elerent: Eacktill with 1032 (C0 10107)  ;

The basis for Element Report C010107-SQN (Rev. 2) dated 10-15-86 is Sequoyah l Employee Co.mcern JAN 56-CC2 which states:

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• • Excavation for DAW building foundation revealed red elay, various size rocks, etc. that were usea as a backfill material for the storage yard. ,

if building founcation is constructed without removing backfilled [

material, an uneven settlement of building could occur." j II. Sumery of Issue  ;

Tha Sequoyah (SON) Lry Active Waste (DAW) building was being constructed on \

J unsuitable backfill r:aterial that could result in uneven settlement. l r

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i 4 111. Evaluation  ;

1 TVA said that the decision was made that to remove the existing material and [

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backfill with 1032-crushtd stone prior to building the foundation. This work [

j was perforced by TVA ano as the building was classified as non-QA, the mater- [

s ial was randomly inspected by engir.eers, not QC inspectors. The concerned j l individual was contacted by TVA, and the evaluation report indicates that he was satisfied with the corrective actions taken, i 1 j

!Y. Conclusien I FSAk Secticn 3.2, "Seismic Classification of Strur.tures, Systens and Compo-

) i nents," incicates that the building is not classified as a Seismic Category I i structure. The building is catecerized as non-seismic ano does not recuire l j

r t.c le a r g r a :e c u e l l t,, c.s:uram s (rer.(A). Becaust of the classificaticn of tne builc;q. tr.s stai: :.oncl.. C tra? trere is no need to assess the .

tr.tegrity of the foundation which is outs 1ce of the crea of staff regulation.

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I 8811220264 881104 i PDR ADOCK 05000327 P PDC l

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