ML20009F556

Final Deficiency Rept Re Undersized Insert Plates Initially Reported on 810213.Plates Have Been Reworked to Ensure Adequacy.Deficiency Also Reported Per Part 21

ML20009F556
Person / Time
Site:	Phipps Bend
Issue date:	03/16/1981
From:	Mills L TENNESSEE VALLEY AUTHORITY
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
REF-PT21- 10CFR-050.55E, 10CFR-50.55E, NUDOCS 8107310300
Download: ML20009F556 (2)

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s b'57pf m l'O p TENNESSEE VALLEY AUTHO,RITY,....

CHATTANOOGA. TENNESSEE 374ot 400 Chestnut Street Tower II 0 '2 ; 3l 8l-d/,5-63b t"2 March 16, 1981 PBRD-50-553 /81-08

,,;\\ ly_ Q p Mr. James P. O'Reilly, Director

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9 Office of Inspection and' Eaforcement O

6; q%g, ggg U.S. Nuclear Regulatory Commission g

7 Region II - Suite 3100 101 Marietta Street

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N Atlanta, Georgia 30303 I'S Dear Mr. O'Reilly*

PHIPPS BEND NUCLEAR PLANT UNIT 1 - REPORTABLE DEFICIENCY -

UNDERSIZED INSERT PLATES - PBRD-50-553/81-08 The subject deficiency was initially reported to NRC-0IE, Region II, Inspector R. W. Wrignt on February 13, 1981, as NCR PBNP-193 In compliance with paragraph 50.55(e) of 10 CFR Part 50, we are enclosing the final report on the subject deficiency. We consider 10 CFR Part 21 applicable to this nonconformance. If you have any questions, please call Jim Domer at FTS 857-2014.

Very truly yours, TENNESSEE VALLEY AUTHORITY

. M. Mills, Manager Nuclear Regulation and Safety Enclosure

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Mr. Victor Stello, Director (Enclosure)

Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, DC 20555 l

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i 8107310300 810316 PDR ADOCK 05000553 S

PDR An Ecw opportun y Ereioyer

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ENCLOSURE PHIPPS BEND NUCLEAR PLANT UNIT 1 INSERT PLATES - UNDERSI7.ED l

PBRD-50-553/A1-08 REPORT NO. 1 (FINAL)

Description of Deficiency During the installation of insert plates it was discovered that stainless steel curb plates (FSP-CP-4 and FSP-CP-9) were one-half i

inch thick instead of one inch thick, as required by applicable drawing 5225-314 These plates are manufactured by Stellar Manufacturine Company (Stellar). These plates are used to mount equipment in the fuel building service pool and as fuel ract; grid assembly supports.

The caurs of the deficier.cy was due to Steller's inadvertent substitution of similar sized anchor plates (one-half inch thick) instead of the one-inch thick support plates required.

I Safety Implications Had this condition remained uncorrected, the structural integrity of the fuel building service pool could have been jeopardized, adversely affecting the safe operations of the plant.

Corrective Actions e

TVA has reworked the insert plates to ensure their adequacy. Structural angles were welded _the full length of the insert plate. Welding was done in accordance with the AWS Code D1.1 and weld inspection was performed as required by C. F. Braun Specification 300-12. Stellar has indicated they will prevent this type of condition from recurring in future work. To ensure that Stellar's corrective measures are adequate, TVA will require that a " hold" point be placed on similar sized anchor and support plates to be provided for Phipps Bend unit 2.

These plates will then be inspected by TVA before shipment. Corrective actions will be completed on or before March 31, 1981.

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