ML19343B982

Second Interim Deficiency Rept Re Faulty Fillet Welds Initially Reported 801107.Reinsp 98% Complete.Preliminary Results Indicate 10% of Welds Require Addl Weld Metal.All Deficient Welds Identified Will Be Repaired

ML19343B982
Person / Time
Site:	Sequoyah
Issue date:	02/11/1981
From:	Mills L TENNESSEE VALLEY AUTHORITY
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
10CDR-50.55E, 10CFR-050.55E, 10CFR-50.55E, NCR-2398, NUDOCS 8102180426
Download: ML19343B982 (1)

Text

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9-BAE TENN ESS EE '/ ALLEY A.UT'HC m'Y c-amscen -e mact 27 .

400 Chestnut Street Tower II 953 )

February 11, 1981 q, tg 4 N, <

' M b(I U U h Mr. James O'Reilly, Director Office of In ection and Enforcement U.S. Nuclear R latory Conunission Q6 *FEB17193

• ' somers g 4 WY Region II - Suit 3100 g 101 Marietta Stree 4 Atlanta, Georgia 3 03 V1*

Dear Mr. O'Reilly:

SEQUOYAH NUCLEAR PLANT UNIT 2 - FAULTY FILLET iiELDS - NCR 2398 -

• SECOND INTERIM REPORT The subject deficiency was initiall7 reported to NRC-OIE Inspector ,

R. N. Wright on November 7,1980, in accordance with 10 CFR 50.55(e). An '

inte'im m port was submitted on December 3, 1980. We expect to submit our next report by April 2, 1981.

t All two-inch schedule 160 socket welds have been identified and reinspection is approximately 98 percent complete. Preliminary results indicate that approximately 10 percent of welds require additio'nal weld metal. Other sizes of schedule 160 socket welds along with schedule 80 and 40 socket welds are being sampled to determine the full extent of the deficiency. This sampling is approximately 75 percent complete. TVA has ,

conducted retraining sessions for fillet weld inspectors and wi?.1 conduct l retraining of crafts employees in the area of fillet weld size require-ments. All deficient welds identified will be repaired by adding weld i metal as appropriate. >

If you have any questions, please get in touch with D. L. Lambert at FTS 857-2581.

t Very truly yours,  !

TENNESSEE VALLET AL7BCRITY L. M. Mills, Manager ,

Nuclear Regulation and Safety I

cc: Mr. Victor Stello, Director /

l Office of Inspection and Enforcement .

U.S. Nuclear Regulatory Cosuaission i Washington, DC 20555 i

/1 316t100 M d s9 '

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