ML20054A859

Fifth Interim Deficiency Rept Re Cooling Tower Makeup Control,Initially Reported on 810423.Const Activities Being Deferred to Minimize Expenditures & Effort,Pending Decision on Project Cancellation

ML20054A859
Person / Time
Site:	Yellow Creek
Issue date:	03/30/1982
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 8204160209
Download: ML20054A859 (2)

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e TENNESSEE VALLEY AUTHORITY CH ATTANOOGA, TENNESSEE 374o1 400 Chestnut Street Tower II March 30, 1982

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YCRD-50-566/81-15 5 YCRD-50-567/81-12 'O

- 'g U.S. Nuclear Regulatory Commission -

Region II <'

Attn: Mr. James P. O'Reilly, Regional Administrator 101 Marietta Street, Suite 3100 -

Atlanta, Georgia 30303 o

Dear Mr. O'Reilly:

$ E YELLOW CREEK NUCLEAR PLANT UNITS 1 AND 2 - COOLING TOWER MAKEUP CONT YCRD-50-566/81-15, YCRD-50-567/81 FIFTH INTERIM REPORT ol ,

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The subject deficiency was initially reported to NRC-0IE Inspecto f R. V. Crlenjak on April 23, 1981 in accordance with 10 CFR 50.55 e) as.

NCR YCN EEB 8102. This was followed by our interim reports date _

gkp( 9 7 rr May 26, July 8, August 18, and December 8, 1981. As discussed wi h.

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'e Inspector R. V. Crlenjak by telephone on March 22, 1982, enclosed 690' y ,/

is our fifth interim report.

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TVA has elected to defer construction activities for this project.

Deferral does not mean that the project will be cancelled but that TVA is minimizing its expenditures and construction efforts until such time that TVA has sufficient information to indicate whether the project should be completed or cancelled. Therefore, we will not be submitting a final report for this nonconformance until a final decision is made regarding i

this project.

If you have any questions concerning this matter, please get in touch with R. H. Shell at FTS 858-2688.

Very truly yours, TENNESSEE VALLEY AUTHORITY O I L. M. Mills, Manager Nuclear Regulation and Safety

( Enclosure i oc: Mr. Richard C. DeYoung, Director (Enclosure) l Office of Inspection and Enforcement i U.S. Nuclear Regulatory Commission Washington, DC 20555 ..

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B204160209 820330 gDRADOCK05000 An Equal Opportunity Employer

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• r ENCLOSURE YELLOW CREEK NUCLEAR PLANT UNITS 1 AND 2 COOLING TOWER MAKEUP CONTROL NCR YCN EEB 8102 YCRD-50-566/81-15, YCRD-50-567/81-12 .

10 CFR 50.55(e)

FIFTH INTERIM REPORT Description of Deficiency TVA Heat Rejection Design Criteria N8-KH-D740 and Essential Raw Cooling Water (ERCW) Design Criteria N8-KE-D740 impose primary safety-related requirements and the ability to sustain a single active failure on the cooling tower makeup supply. A review of the functional control logic diagram indicates that these requirements are not met by the non-Class IE controls which are provided. ,

Interim Progress TVA has analyzed the safety-related requirements imposed by design criteria N8-KH-D740 and N8-KE-740. The design criteria have been revised to correc*,

deficiencies in the safety-related and Class IE requirements, which were previously imposed. The functional control logic diagram and other design documents will be revised to reflect the new requirements.

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