ML20064J040
| ML20064J040 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 01/10/1983 |
| 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 8301170486 | |
| Download: ML20064J040 (2) | |
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TENNESSEE VALLEY AUTHORITY CH ATTANOOGA. TENNESSEE 374ol 400 Chestnut Street Tower II January 10, 1983-b BLRD-50-438/83-03 BLRD-50-439/83-01 u
U.S. Nuclear Regulatory Commission Region II p
Attn:
Mr. James P. O'Reilly, Regional Administrator 25 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303 ro c:
Dear Mr. O'Reilly:
BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 - UNQUALIFIED WELDING ON CABLE TRAY SUPP0hT3 - BLRD-50-438/83-03, BLRD-50-439/83 FIRST INTERIM REPORT The subject deficiency was initially reported to NRC-0IE Inspector P. E. Fredrickson on December 13, 1982 in accordance with 10 CFR 50.55(e) as NCR 2120. Enclosed is our first interim report. We expect to submit our next report on or about April 19, 1983 If you have any questions concerning this matter, please get in touch with R. H. Shell at FTS 858-2688.
Very truly yours, TENNESSEE VALLEY AUTHORITY
)%U L. M. Mills,l Manager Nuclear Licensing Enclosure cc:
Mr. Richard C. DeYoung, Director (Enclosure)
Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, D.C.
20555 01170486 830110 R ADOCK 05000439 g
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An Equal Opportunity Employer
ENCLOSURE BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 UNQUALIFIED WELDING ON CABLE TRAY SUPPORTS 10 CFR 50.55(e)
NCR 2120 BLRD-50-438/83-03, BLRD-50-439/83-01 FIRST INTERIM REPORT Description of Deficiency Three TVA welders working on safety-related cable trays made welds using weld processes they had not been qualified to perform. The welders had been qualified to perform short-circuit Gas Metal Arc Welding (GMAW) but the weld process used on the supports in question was the globular transfer process. The globular transfer process is also a GMAW technique but the amperage and voltage settings used are higher than those used with the short-circuit process.
The welders also used the short-circuit process for welds other than fillet welds. The short-circuit process procedure is only qualified for use'on fillet welds.
Interim Progress TVA is investigating the nonconformance to determine the appropriate corrective action, cause, and actions required to prevent recurrence.
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