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Forwards Insp Rept 50-260/89-39 on 890814-16 & Notice of Violation.Violation Involved Modeling Error in NSSS Seismic Analysis.Areas Examined During Insp Included GE Potential Reportable Condition of CRD Housing Seismic Analysis
	ML19325D456
Person / Time
Site:	Browns Ferry
Issue date:	10/13/1989
From:	Liaw B; Office of Nuclear Reactor Regulation
To:	Kingsley O; Tennessee Valley Authority
Shared Package
ML19325D457	List: IR 05000260/1989039; ML19325D456;
References
	NUDOCS 8910240175
	Download: ML19325D456 (4)
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NUCLEAR REGULATORY COMMISSION

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WASHINGTON. D. C. 20655

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october 13, 1989

Docket No. 50-260'

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Mr. Oliver D. Kingsley, Jr.-

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~ Senior Vice President, Nuclear Power

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Tennessee Valley Authority

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6N 38A Lookout Place

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1101 Market Street

Chattanooga, Tennessee 37402-2801

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Dear Mr. Kingsley:

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SUBJECT: NOTICE OF VIOLATION

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(NRCINSPECTIONREPORTNO. 50-260/89-39)

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This' refers to the Nuclear Regulatory Commission (NRC) special inspection

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conducted at the General Electric Company's offices on August 14-16,~1989.

The inspection included a review of the nuclear steam supply system (NSSS)

activities associated with your Nuclear Perfomance Plan's seismic design

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program for the Browns Ferry Nuclear Plant, Unit 2.

At the conclusion of

the inspection, the findings were discussed with those members of your staff

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. identified in the. inspection report.

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Areas examined during(the inspection included General Electric's potential

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reportable condition 10 CFR Part 21) of the control rod drive (CRD) housing

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seismic analysis and open items from the NRC's previous inspection at General

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Electric's office - also related to the Browns Ferry seismic design program.

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- The inspection findings indicate certain activities appeared to violate NRC

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requirements. The violation involved a modeling error in the nuclear steam

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supply system seismic analysis which was recently performed as part of your

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restart activities.

The error involved assuming the existence of seismic

lateral restraints on the CRD housing in your seismic analysis model when in

fact none was installed'at Browns Ferry. The course of action you have taken

to develop extensive modifications for the installation of restraints on the

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CRD housing is viewed by the staff to be a prompt and positive resolution.

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. The violat' on, references to pertinent requirements, and elements to be included

in your response are described in the enclosed Notice.

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Mr. Oliver D.'.Kingsley

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In accordance with Section 2.790 of the NRC's " Rules of Practice," Part 2

. Title 10. Code of Federal Regulations, a copy of this letter and its enclosures ~

will be placed in the NRC Public Document. Room.

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Should you have any questions concerning this letter, please contact us.

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Sincerely,

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Original signed by

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B. D. Llaw

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B. D. Liaw, Director

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TVA Projects Division

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Office of Nuclear Reactor Regulation

Enclosures:.

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Notice of Violation

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NRC Inspection Report

50-260/89-39

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cc w/ enclosures:

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See next page

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-*For previous concurrences see attached ORC

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.DATE : 10/02/89

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0FFICIAL RECORD COPY

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' Document Name:

IR 50260/8939

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Mr. Oliver D. Kingsley, Jr.

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cc w/ enclosures:

General Counsel

Chctrman, Linestone County Comission

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Tennessee Valley Authority

P. O. Box 188

400 West Sumit Hill Drive

Athens Alabama 35611

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ET llB 33H

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Knoxville, Tennessee. 37902

Claude Earl Fox, M.D.

State Health Officer

Mr. F. L. Moreadith

State Department of Public Health

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Vice President, Nuclear Engineering

State Office Building

Tennessee Valley Authority

Montgomery Alabama 36130

400 West Sumit Hill Drive

WT 12A 12A

Regional Administrator, Region II

Knoxville, Tennessee 37902

U.S. Nuclear Regulatory Comission

101 Marietta Street, N.W.

Dr. Mark O. Medford

Atlanta, Georgia 30323

Vice President and Nuclear

Technical Director

Mr. Danny Carpenter

Tennessee Valley Authority

Senior Resident Inspector

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6N 38A Lookout Place

Browns Ferry Nuclear Plant

Chattanooga, Tennessee 37402-2801

U.S. Nuclear Regulatory Commission

Route 12. Box 637

Manager, Nuclear Licensing

Athens Alabama 35611

and Regulatory Affairs

Tennessee Valley Authority

Dr. Henry Myers Science Advisor

SN 1578 Lookout Place

Committee on Interior

Chattanooga, Tennessee 37402-2601

and Insular Affairs

U.S. House of Representatives

Mr. O. J. Zeringue

Washington, D.C.

20515

Site Director

Browns Ferry Nuclear Plant

Tennessee Valley Authority

Rockville Office

P. O. Box 2000

11921 Rockville Pike

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Decatur. Alabama 35602

Suite 402

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Rockville, Maryland 20852

Mr. P. Carier

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Site Licensing Manager

Browns Ferry Nuclear Plant

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Tennessee Valley Authority

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P. O. Box 2000

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Decatur, Alabama 35602

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Mr. G. Campbell

Plant Manager

Browns Ferry Nuclear Plant

Tennessee Valley Authority

P. O. Box 2000

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Decatur, Alabama 35602

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