ML20065K090
| ML20065K090 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 09/29/1982 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| REF-PT21-82 10CFR-050.55E, 10CFR-50.55E, NUDOCS 8210060274 | |
| Download: ML20065K090 (2) | |
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9 TENNESSEE VALLEY AUTHORITY CH ATTANOOGA. TENNESSEE 374ol 1100 Chestnut Street Tower II September 29, 1982 U.S. Nuclear Regulatory Commission Region II Attn:
Mr. James P. O'Reilly, Regional Administrator 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303
Dear Mr. O'Reilly:
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BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 - ITT GRINNEL WELDED SUPPORTS - m 7;j.-
NCR BLN BLP 8002 - SEVENTH INTERIM REPORT m
- . z Z.0 The subject deficiency was initially reported to NRC-0IE Inspector R. W.--
50 Wright on September 5, 1980, in accordance with 10 CFR 50.55(e). This wgs
- y flq) followed by our interim reports dated October 3, 1980, January 22, April 29, and October 21, 1981, and March 26 and July 12, 1982. Enclose 7 di is our seventh interim report. We expect to submit our next report by a
'P Z March 15, 1983 We consider 10 CFR Part 21 applicable to this deficienog.
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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 L. M. Mills,14anager Nuclear Licensing Enclosure oc:
Mr. Richard C. DeYoung, Director (Enclosure)
Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission l
Washington, D.C.
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("8210060274 8209g8 PDR ADOCK 05 W 1
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An Equal Opportunity Employer
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ENCLOSURE BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 ITT GRINNELL WELDED SUPPORTS NCR BLN BLP 8002 10 CFR 50.55(e)
SEVENTH INTERIM REPORT Description of Deficiency Detail sheets supplied by ITT Grinnell for assembly of pipe hangers and supports had discrepancies in weld designations. Certain supports with welds made on structural members that make angles less than 60 degrees and greater than 135 degrees were designated as fillet welds but should have been groove welds. On some groove welds which were specified, the parentheses around the dimension were omitted. This omission indicated depth or size of bevel when in fact ITT Grinnel meant effective throat.
Both of the above weld joint designations conflict with applicable AWS symbols for welding (AWS A2.4-76) and do not provide sufficient information for fabrication and inspection.
Interim Progress TVA's contractor, ITT Grinnell, is near completion of their revision of the affected hanger detail sheets. TVA's Division of Engineering Design is reviewing the detail sheets as Grinnell submits them and, when approved, is releasing them to the Division of Construction for inspection of fabricated welds.
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