ML20065H875

First Interim Deficiency Rept Re Failure to Consider Seismic & Inertial Loadings on Ladders,Platforms & Walkways. Initially Reported on 820826.Const Activities Deferred Until Decision Re Const Completion Reached

ML20065H875
Person / Time
Site:	Yellow Creek
Issue date:	09/27/1982
From:	Mills L TENNESSEE VALLEY AUTHORITY
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
10CFR-050.55E, 10CFR-50.55E, NUDOCS 8210050285
Download: ML20065H875 (2)

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4-A TENNESSEE VALLEY AUTHORITY

' CHATTANOOGA. TENNESSEE 374ot

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400 Chestnut Street Tower II

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September 27, 1982 YRCD-50-566/82-15 -

YRCD-50-567/82-15 U.S. Nuclear Regulatory Commission

• Region II~

Attn: Mr. James P. O'Reilly, Regional Administrator C E g .,

101 Marietta Street, Suite 3100 g , c.

Atlanta, Georgia 30303 g j  ;

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Dear Mr. O'Reilly:

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YELLOW CREEK NUCLEAR PLANT UNITS 1 AND 2 - FAILURE TO CONSIDER SEISMfC AND OM '[

-INERTIAL LOADINGS ON LADDERS, ETC., YRCD-50-566/82-15, Yf FIRST INTERIM REPORT  ;

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b" The subject deficiency was initially reported to NRC-0IE Inspector l Don Quick on August 26, 1982 in accordance with 10 CPR 50 55(e) as  !

-NCR GEN.CEB 8210. Enclosed is our first interim report. l

- r TVA has elected to defer construction activities for the Yellow Creek -

Nuclear Plant. Deferral does not mean that the project will be cancelled, l but that TVA is minimizing its expendituren and construction efforts until .'

such time that TVA has sufficient informat. ion to indicate whether _the project should be completed or cancelled. Therefore, we will not be submitting another report for this nonconformance until a final decision e "is made regarding this project. A deficiency at Watts Bar Nuclear Plant .

on the same subject is being handled separately.

If you have any questions, please get in touch with R. H. Shell at~ f '

FTS 858-2688.

Very truly yours, 'i TEUNESSEE VALLEY AUTHORITY ,

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_ L. M. Mills, Manager -  !

Nuclear Licensing

. I.Enclosure ~ _

cc: Mr. Richard C. DeYoung, Director (Enclosure) _ +

i_ Office of Inspection and Enforcement.

U.S. Nuclear Regulatory Commission Washington, D.C. 20555-

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. An Equal Opportunity Employer

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ENCLOSURE i YELLOW CREEK NUCLEAR PLANT UNITS 1 AND 2 FAILURE TO CONSIDER SEISMIC INERTIAL LOADINGS FOR LADDERS, ETC.

NCR GEN CEB 8210 YRCD-50-566/82-15, YRCD-50-567/82-15 FIRST INTERIM REPORT Description of Deficiency '

Chicago Bridge and Iron Company (CBI) designed the ladders, platforms,

. and' walkways attached to the containment vessels for live and dead load only. Inertial earthquake loadings may not have been applied to these structures.

Interim Progress The containment vessel stress reports have not been submitted at this ,

time. CBI will be advised of this condition and instructed to make ,

the necessary revisions to include inertial earthquake loadings in the final design.

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