ML19347D869
| ML19347D869 | |
| Person / Time | |
|---|---|
| Site: | Hartsville, Phipps Bend  |
| Issue date: | 04/06/1981 |
| 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, NUDOCS 8104140358 | |
| Download: ML19347D869 (2) | |
Text
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Mr. James P. O'Keilly, Director ON Office of Inspection and Enforcement 4
U.S. Nuclear Regulatory Commission Region II - Suite 3100 101 Marietta Street Atlanta, Oeorgia 30303
Dear Mr. O'Reilly:
HARTSVILLE AND PHIPPS BEND NUCLEAR PLANTS - REPORTABLE DEFICIENCY -
FILLET WELD MISSPECIFICATION - HTRD-50-518
-519, -520, -521/81 PBRD-50-553, -554/81-01 The subject deficiency was initially reported to NRC-OIE Region II Inspector R. 'i. Wright on December 8,1980, as NCR's HTAHPP 8003, HTBHPP 8003, and PBNHPP 8003 The first interim report was submitted on January 7, 1981. In compliance with paragraph 50.55(e) of 10 CFR Part 50, we are enclosing the second interim report on the subject deficiency. TVA anticipates transmitting the final report en or before July 31, 1981. If you have any questions, please call Jin Doner at FTS 857-2014.
Very truly yours, TENNESSEE VALLEY AUTHORITY r
L. M. Mills, Manager i
Nuclear Regulation and Safety Enclosure cc:
Mr. Victor Stello, Director (Enclosure)
Office of Inspection and Enforcement U.S. Nuclear Regulatory Consission
,h/f Washington, DC 20555
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l ENCLOSURE HARTSVILLE AND PHIPPS BEND NUCLEAR PLANTS FILLET WELD MISSPECIFICATION HIRD-50-518, -519, -520 -521/81-01 PBRD-50-553, -554/81-01 10 CFR 50.55(e)
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REPORT NO. 2 (INTERIM)
Description of Deficiency In a number of TVA nuclear plant systems, fillet welds were specified, in lieu of beveled groove welds, to connect members whose angle of intersection is outside the limits for fillet weld application as stipulated in the American Institute of Steel Construction (AISC)
Standards. The AISC Standard states that the welds which are made joining members at an angle of 600 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 A design review of the TVA nuclear facilities has revealed the above discrepancy exists in some form at every TVA plant. TVA will continue to evaluate each individual plant and will issue updated reports when results are available.
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