ML20206G404: Difference between revisions

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,  s                                         .
s k
k
ys* ''%
                                          +
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ys* ''%                                                                                         '
d UNITED STATES i
d             %                                                UNITED STATES i
NUCLE AR REGULATORY COMMISSION y. j'' ij W A$mNO TON. D. C. 20655 c
c y . j'' ij                                       NUCLE AR REGULATORY COMMISSION W A$mNO TON. D. C. 20655 s . . .... .f                                                                                     .
s.....f SAFETY EVALUATION REPORT BY THE OFFICE OF SPECIAL PRORCTS EMPLOYEE CONCERN EttMENT REPORT CO 10107 I
SAFETY EVALUATION REPORT BY THE OFFICE OF SPECIAL PRORCTS EMPLOYEE CONCERN EttMENT REPORT CO 10107 I                                                                                                         "BACKFILL WITH 1632"
"BACKFILL WITH 1632" TENhESSEE VALLEY AUTHORITY
+
+
TENhESSEE VALLEY AUTHORITY SEQUOYAk NUCLEAR F0WER PLANT UNITS 1 & 2 DOCKET NOS. 50-327 AND 50-328 i
SEQUOYAk NUCLEAR F0WER PLANT UNITS 1 & 2 DOCKET NOS. 50-327 AND 50-328 i
                                                    !.      Subfect                                                                             ;
l Subfect i
l i
Categcry: Construction (20000) i Subcategory:
!                                                  Categcry: Construction (20000)                                                               i
Soils (10100) i Elerent:
'                                                  Subcategory: Soils (10100) i                                                   Elerent: Eacktill with 1032 (C0 10107)                                                     ;
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:
The basis for Element Report C010107-SQN (Rev. 2) dated 10-15-86 is Sequoyah l
'                                                                                                                                                r
Employee Co.mcern JAN 56-CC2 which states:
                                                            ** Excavation for DAW building foundation revealed red elay, various size rocks, etc. that were usea as a backfill material for the storage yard.             ,
r
if building founcation is constructed without removing backfilled                   [
** Excavation for DAW building foundation revealed red elay, various size rocks, etc. that were usea as a backfill material for the storage yard.
material, an uneven settlement of building could occur."                             j II. Sumery of Issue                                                                     ;
if building founcation is constructed without removing backfilled
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
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
(
(
i 4                                                  111. Evaluation                                                                             ;
r 111. Evaluation i
1 TVA said that the decision was made that to remove the existing material and                 [
4 1
j
j TVA said that the decision was made that to remove the existing material and
[
]
]
backfill with 1032-crushtd stone prior to building the foundation. This work                 [
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
j was perforced by TVA ano as the building was classified as non-QA, the mater-
                                                    !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
ial was randomly inspected by engir.eers, not QC inspectors. The concerned 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                       .
s l
tr.tegrity of the foundation which is outs 1ce of the crea of staff regulation.
individual was contacted by TVA, and the evaluation report indicates that he was satisfied with the corrective actions taken, i
1                                                                                                                                               i l
1 j
I                                            8811220264 881104                                                                               i PDR     ADOCK 05000327 P                         PDC                                                                   l
I
                                                                                                                                                !}}
!Y.
Conclusien FSAk Secticn 3.2, "Seismic Classification of Strur.tures, Systens and Compo-
)
nents," incicates that the building is not classified as a Seismic Category I structure. The building is catecerized as non-seismic ano does not recuire l
i i
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 j
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.
1 i
l I
8811220264 881104 i
PDR ADOCK 05000327 P
PDC l
-}}

Latest revision as of 01:20, 7 December 2024

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: ... further results
References
NUDOCS 8811220264
Download: ML20206G404 (1)
v • d • e


Text

_ - _ - _ _ _ _ _ _ _ _ _ _ - _ - _ _

s k

ys* %

+

d UNITED STATES i

NUCLE AR REGULATORY COMMISSION y. j ij W A$mNO TON. D. C. 20655 c

s.....f SAFETY EVALUATION REPORT BY THE OFFICE OF SPECIAL PRORCTS EMPLOYEE CONCERN EttMENT REPORT CO 10107 I

"BACKFILL WITH 1632" TENhESSEE VALLEY AUTHORITY

+

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

l Subfect i

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:

r

    • 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 111. Evaluation i

4 1

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

[

]

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-

[

ial was randomly inspected by engir.eers, not QC inspectors. The concerned j

s l

individual was contacted by TVA, and the evaluation report indicates that he was satisfied with the corrective actions taken, i

1 j

I

!Y.

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

)

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

i i

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 j

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.

1 i

l I

8811220264 881104 i

PDR ADOCK 05000327 P

PDC l

-

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