ML20040F789
| ML20040F789 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 01/22/1982 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| REF-PT21-81 10CFR-050.55E, 10CFR-50.55E, NUDOCS 8202100310 | |
| Download: ML20040F789 (2) | |
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TENNESSEf-VALLEY AugQoplTY g 3
CHATTANOOGA. TENNESSEE di2hl, C [ v $ i 3 l/.
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Janua BLRD-50-438/81-72 BLRD-50-439/81-70 Mr. James P. O'Reilly, Director Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Region II - Suite 3100 101 Marietta Street Atlanta, Georgia 30303
Dear Mr. O'Reilly:
BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 - WELDS BY JOHNSON MACHINE WORKS ON REVOLVING PLATFORM - BLRD-50-438/81-72, BLRD-50-439/81 SECOND INTERIM REPORT The subject deficiency was initially reported to NRC-0IE Inspector R. V. Celenjak on November 6, 1981 in accordance with 10 CFR 50.55(e) as NCR 1638. This was followed by our first interim report dated December 4, 1981. Enclosed is our second interim report. We expect to submit our next report by March 11, 1982. We consider 10 CFR Part 21 applicable to this deficiency.
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 s
L. M. Mills, Manage Nuclear Regulation and Safety S
Enclosure OJ oc:
Mr. Richard C. DeYoung, Director (Enclosure)
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ENCLOSURE BELL 2FONTE NUCLEAR PLANT UNITS 1 AND 2 WELDS BY JOHNSON MACHINE WORKS ON REVOLVING PLATFORM BLRD-50-438/81-72, BLRD-50-439/81 10 CFR 50.55(e)
SECOND INTERIM REPORT Description of Deficiency Eight welds on the unit 2 revolving platform truck, manufactured by Johnson Machine Works, Chariton, Iowa, do not comply with the American Welding Society specification D1.1, as required by the procurement contract. The subject welds exhibit overlap, undercut, spatter, and insufficient reinforcement.
The following list identifies the welds which were found not to comply with AWS D1.1 requirements on the unit 2 revolving platform truck.
REFERENCE JOHNSON MACHINE WORKS DRAWING 55904, SHEET 7 Weld Components Weld Defects 1.
P1. "PA" to Channel "MA" Insufficient Reinforcement ( 1/16") -
- 2. - P1. "PC" to Channel "MA" Overlap, Insufficient Reinforcement
( 1/16"), Undercut ( 1/32"- 3/32")
3 P1. "PJ" to Channel "MA" Insufficient Reinforcement ( 1/16")
Undercut ( 1/32" - 1/8")
4.
P1. "PM" to P1. "PP" Insufficient Reinforcement (varies from 1/32"- 1/16")
5.
P1. "PP" to P1. "PA" Undercut ( 1/32"- 3/32")
6.
P1. "PP" to Channel "MA" Overlap, LOF @ Weld Ties, Undercut
( 1/32"- 3/32"), Spatter, Insufficient Reinforcement ( 1/16")
7.
Pl. "PP" to Pl. "PQ" Overlap, Spatter, Undercut
( 1/32-3/32")
8.
P1. "PT" to P1. "PA" Undercut ( 1/32"- 3/32"), Welded continuous on two sides instead of intermittent as required-by the drawing.
TVA's inspection revealed that some of the vendor welds on the unit 1 truck exhibited similar type defects as those on unit 2.
Interim Progress An ' analysis of unit 2 items 1, 2, and 4 through 8 indicates that the welds are adequate as they currently exist. Item No. 3 will be repaired in accordance with AWS D1.1, Section 3.7.
All new welding will be either magnetic particle or dye-penetrant tested.
To prevent future welding deficiencies, TVA has initiated a training program for Quality Engineering Branch (QEB) employees per QEB-AI 313.1
" Training and Certification of QEB Personnel" to certify QEB source inspectors with the American Welding Society. In addition, source.
inspectors will be allotted more time for inspection which should allow a more comprehensive inspection and detection of similar deficiencies.
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