ML20149L982
| ML20149L982 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 02/22/1988 |
| From: | Richardson S NRC OFFICE OF SPECIAL PROJECTS |
| To: | White S TENNESSEE VALLEY AUTHORITY |
| Shared Package | |
| ML20149L984 | List: |
| References | |
| NUDOCS 8802250211 | |
| Download: ML20149L982 (4) | |
See also: IR 05000327/1987074
Text
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UNITED STAT ES
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NUCLEAR REGULATORY COMMISSION
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WASHINGTON, D. C. 20555
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February 22, 1988
Docket Nos. 50-327
and 50-328
Tennessee Valley Authority
ATTN: Mr. S. A. White
Manager of Nuclear Power
6N 38A Lookout Place
1101 Market Street
Chattanooga, TN 37402-2801
Gentlemen:
SUBJECT:
IMSPECTION REPORT NOS. 50-327/87-74 AND 50-328/87-74 -
,
INTEGRATED DESIGN INSPECTION FOLLOWUP
This letter fo mards the results of an inspection of the corrective actions
performed by(IDI) conducted in TVA's Knoxville offices between November 2 and
TVA in response to the findinos of the Integrated Design
Inspection
November 19, 1987.
In addition to reviewing the specific and generic corrective
actions related to the individual findings of the IDI, the team reviewed
,
additional information in the structural discipline that was unavailable
during the IDI. This information was reviewed by the team in order that NRC
could reassess its previous request that TVA conduct an independent review to
confirm the technical adequacy of the structural design. Based on the
structural calculations that were retrieved or regenerated by TVA, a review of
the specific corrective actions performed in response to the IDI findings and
a review, conducted on a sampling basis, of TVA's investigation of the generic
implications of the IDI findings, the team concluded that a comprehensive
broad-based review of the Sequoyah structural design is not necessary.
However, in the structural area TVA was requested to conduct generic reviews
of four specific areas:
(1) equipment supports, (2) shear capacity
',
calculations for walls and slabs. (3) reinforcing steel placed in walls and
(4) generation of vertical seismic loads using 2/3 the horizontal response
spectra vs. the calculated vertical response spectra.
In addition, in the
mechanical components discipline, TVA was requested to conduct a generic
review of vendor seismic qualification documentation. The sco'
of these
generic reviews have been discussed with your staff during the inspection.
l
This inspection was conducted on an expedited basis, prior to the receipt of
TVA's response to the IDI report. Appendix A to the erclosed report addresses
each finding in detail and describes the additional corrective actions
necessary for its resolution.
Your response dated December 29, 1987 to the NRC IDI report was not
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considered in this report due to tire consideration. Your response will be
covered as part of the IDI follow up inspection conducted the week of
February 1, 1988.
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Tennessee Valley Authority
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In accordarce with 10 CFR 2.790(a), a copy of this letter and the enclosure
will be placed in the NRC Public Document Room.
Should you have any cuestions concerning this inspection, please contact me or
Mr. Gene Imbro, (301) 492-0954.
Sincerely,
h~ b M' ds,
Steven D. Richardson, Acting Director
TVA Projects Division
Office of.Special Projects
Enclosure:
Inspection Report 50-327/87-74
and 50-328/87-74
cc w/ enclosure: See next page
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Tennessee Valley Authority
-Sequoyah Nuclear Plant
cc:
General Counsel
Regional Administrator, Region II
Tennessee Valley Authority
U.S. Nuclear Regulatory Comission
400 West Sumit Hill Drive
101 Marietta Street, N.W.
E11 233
Atlanta, Georgia 30323
Knoxville, Tennessee 37902
Resident Inspector /Sequoyah NP
Mr. R. L. Gridley
c/o U.S. Nuclear Regulatory Comission
Tennessee Valley Authority
2600 Igou Ferry Road
5N 1578 Lookout Place
Soddy Daisy, Tennessee 37379
Chattanooga, Tennessee 37402-2801
Mr. Richard King
Mr. H. L. Abercrombie
e/o U.S. GA0
Tennessee Val!ey Authority
1111 North Shore Drive
Sequoyah Nuclear Plant
Suite 225, Box 194
P.O. Box 2000
Knoxville, Tennessee 37919
Soddy Daisy, Te,nessee 37379
Tennessee Department of
Mr. M. R. Harding
Public Health
Tennessee Valley Authority
ATTN:
Director, Bureau of
Sequoyah Nuclear Plant
Environmental Health Services
P.O. Box 2000
Cordell Hull Building
Soddy Daisy, Tennessee 37379
Nashville, Tennessee 37219
Mr. D. L. Williams
Mr. Michael H. Mobley, Director
Tennessee Valley Authority
Division of Radiological Health
400 West Sumit Hill Drive
T.E.R.R.A. Building
W10 BS5
150 9th Avenue North
Knoxville, Tennessee 37902
Nashville, Tennessee 37203
County Judge
Dr. Henry Myers, Science Advisor
Hamilton County Courthouse
Comittee on Interior
Chattaneoga, Tennessee 37402
and Insular Affairs
U.S. House of Representatives
Washington, D.C.
20515
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Tennessee Valley Authority
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Distribution:
(w/ enc 1)
40C5)(Docket No. 50-327/328)
POR
LPOR
i
DRIS R/F
RSIB R/F
OSP R/F
JPartlow, NRR
BGrimes, NRR
CHaughney, NRR
Elmbro, NRR
RArchitzel, NRR
RParkhill, NRR
FMiraglia, NRR
JAxelrad, OSP
SRichardson, OSP
GZech, OSP
BDLiaw, OSP
JFair, OSP
r
TCheng, OSP
RHerman, OSP
RShewmaker, OSP
EMcKenna, OSP
JDonohew, OSP
i
FMcCoy, RII
)
KBarr, RII
BHayes, 01
i
SConnelly, 0IA
'
EJordan, AEOD
Inspection Team (6)
Resident Inspector
I
HSIC
ACRS (10)
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I
0FC :P. SIB:DRIS:NRR :RSIB:0RIS:NRR:
S RR:DIR:
RISFNRR:DD: TV
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CHaug n y
$
$JGPa icw
$50R chardson :SD neter
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s
..................
.............
..............i........................
DATE $01/17/88
$ 01/G88
$ 01h7/88
$01/f7/88
$01/M/8S
$0/ /88
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