ML19340F201

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Final Deficiency Rept Initially Submitted 801014,re Embedded Plates W/O Heat Traceability.Plates Analyzed & Found to Meet Requirements of ASTM A-36
ML19340F201
Person / Time
Site: Phipps Bend Tennessee Valley Authority icon.png
Issue date: 01/13/1981
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, NCR-PBNP-156, NRC-PBNP-156, NUDOCS 8101210348
Download: ML19340F201 (2)


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400 Chestnut Street iter II January 13, 1931 ~!

Mr. Je P. O'Seilly, Director Office of IrWien a t' Dtforcement U.S. Nuclear Regulatory Canission Region II - Suite 3100 101 Marietta Street _

Atlanta, Gecrgia 30303 _

Dear Mr. O'Reill'/:

PHIPPS PRD NrILEAR PL*Nf UNIT 1 - w:.suicMLE D22'ICIDLY - SEEDDED PL' DES TETOLT !!ETtT Tr6ILIIY (NCR PENP 156)

Initial notificaticn of the subject deficiency was made to NIC-OIE, 4 Ptryicn II, Irepccter R. W. Wright on Octcher 14, Ic80. The first interb report was subnitted en Moverter 13, 1980. In ocupliance with paragraph 50.55(e) of 10 'Ta Part 30, we are enclosing the final report en the subject deficiency. If you have any .

questions, please call J 5 Dcner at FIS 857-2014.

Very truly yours, THINESSEE VALL7 XJHICPTY L. M. Mills, Manager Nuclear Regulation aM Safety Enclosure .f cc: Mr. Victor Stello, Director (Encicsure)V Office of Insoection and .*."orcement U.S. Nuclear Pegulatcry Carnissicn Washington, DC 20555

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o-ENCIDSURE PHIPPS BEND WCLEAR PLANT UNIT 1 DiBEDDEL PIATES WITHOUP HEAT TRACEABILITY 10CFR50.55(e)

NCR NO. PBNP-156, QA AUDIT NO. PB-G-80-13 REPORP NO. 2 (FINAL)

Descriotion of Deficiere/

Embedded plates used to connect and strengthen supports for systems in the auxiliary building are stamped with heat numbers which are not .

currently on Phipps Bend's list of acceptable material heat numbers.

This anomaly was detected during a routine inspection. Because the heat numbers of the subject plates are not on Phipps Bend's heat lists, the cmposition of these plates was not known.

Safety Imolications Had the materials used in the embedded plates at Phipps Bend been deficient, the adequacy of attached supports would have been concurrently suspect. Because sane of these plates support safety-related equipnent, failure of the plates could have degraded the safe operations of the plant. However, since the materials in the plates have been determined to be adequate, no degradation of the safety of the plant existed. -

Corrective Action All plates identified with improper heat numbers have been 1 inch or 1-1/4 inch thick and a width of no less than 9 inches. All receiving documentation for steel plate which meets the above dimensional specifications has been reviewed and accepted for use. This record review substantiated that all material received on this site and used for these embedded plates has met the requirements of AS M A-36.

For further verification, an analysis has been performed on a randcm

sampling basis cf the questionable plates by the TVA's Singleton Materials Engineering Laboratory. All plates tested met the requirements of AS E A-36.

Because TVA has determined that the materials in the plates are as specified, 'IVA will use the plates as installed.

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