ML20149L982

Forwards Results of Integrated Design Insp (Idi) Followup Repts 50-327/87-74 & 50-328/87-74 of Corrective Actions on 871102-10 & 881117-19.Addl Info Re Structural Discipline Unavailable During Idi Review

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: IR 05000327/1987074 ML20149L982
References
NUDOCS 8802250211
Download: ML20149L982 (4)

See also: IR 05000327/1987074

Text

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jf UNITED STAT ES

g NUCLEAR REGULATORY COMMISSION

r. -l WASHINGTON, D. C. 20555

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%.....*t 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

TVA in response to the findinos of the Integrated Design

performed

Inspection by(IDI) conducted in TVA's Knoxville offices between November 2 and

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 I

generic reviews have been discussed with your staff during the inspection. I

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 -2-

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 -4-

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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 l

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SConnelly, 0IA '

EJordan, AEOD

Inspection Team (6)

Resident Inspector I

HSIC

NTIS

ACRS (10) i

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DATE $01/17/88 $ 01/G88 $ 01h7/88 $01/f7/88 $01/M/8S $0/ /88

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