ML20002D117
| ML20002D117 | |
| Person / Time | |
|---|---|
| Site: | Yellow Creek  |
| Issue date: | 01/09/1981 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, YCRD-50-566-81, YCRD-50-567-81, NUDOCS 8101190475 | |
| Download: ML20002D117 (2) | |
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a 400 Chestnut Street Tower II January 9, 1981 YCED-50-566/81-01 9 ' y,f
YCRD-50-567/81-01
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g 67 JAN 161981 *g k3 Mr. Ja:nes P.x 'Reilly, Director 0
m Office of Ins;uection and Enforcement ps. g, y, y
1 U.S. Nuclear Re alatory Commission Region II - Suit 3100 N/
101 Marietta Streeg
/g Atlanta, Georgia 30{03
Dear Mr. O'Reilly:
YELLCW CREEK NUCLEAR PLANT UNITS 1 AND 2 - FILLET WELD MISSPECIFICATION -
YCRD-50-566/81-01 AND YCRD-50-567/81 FIRST INTERIM REPORT The subject deficiency was initially reported to NRC-0IE Inspector R. W. Wright en December 10, 1980, in accordance with 10 CFR 50.55(e) as NCR YCN YCP 8006. Enclosed is our first interiz report. We expect to submit cur next mport by April 8,1981.
If you have any questions concerning this matter, please get in touch with D. L. Lambert at FIS $57-2581.
Very truly yours, TENNESSEE VALLEY AUTHORITY L. M. Mills, Manager Nuclear Regulation and Safety Enclosure cc:
Mr. Victor Stello, Jr., Director (Enclosure)
Office of Inspection and Enforcemmt U.S. Nuclear Regulatory Comnission Washington, DC 20555 r
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Sk ENCLOSURE YELLC'4 CREEK NUCLEAR PLANT UNITS 1 AND 2 FILLET '4 ELD FESSPECIFICATION YC):D-566/81-01 AND YCRD-567/81-01 10 CFR 50 55(e)
FIRST INTERIM REPORT Description of Deficiency In a number of TVA nuclear plant systems, fillet welds were specified in
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lieu of beveled gecove welds, to connect =e=bers whose angle of inte. -
section is outside the li=its for fillet weld application as stipulated in the A=erican Institute of Steel Construction (AISC) Stardards. The AISC Standard states that the welds which are =ade joining F. embers at an angle of 60 or less are to be defined as acute angle welds. Acute angle welds should be specified as beveled groove welds according to AISC.
Interim Progress TVA is in the process of evaluating the AISC Standards and the affected welds in order to determine a satisfactory resolution.
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