ML20027D346
| ML20027D346 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 10/25/1982 |
| 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 8211040181 | |
| Download: ML20027D346 (2) | |
Text
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TENNESSEE VALLEY AUTHORITY CH ATTANOOGA TENNESSEE 374ot 400 Chestnut Street Tower II October 25, 1982 BLRD-50-439/82-63 co 50 r0 us, Dh U.S. Nuclear Regulatory Commission So
-4 Region II ro
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Attn:
Mr. James P. O'Reilly, Regional Administrator 101 Marietta Street, Suite 3100 v
in Atlanta, Georgia 30303 6
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Dear Mr. O'Reilly:
Q BELLEFONTE NUCLEAR PLANT UNIT 2 - LINEAR INDICATIONS IN NAVC0 SPOOL PIECES -
BLRD-50-439/82 FIRST INTERIM REPORT The subject deficiency was initially reported to NRC-0IE Inspector D. Quick on September 24, 1982 in accordance with 10 CFR 50.55(e) as NCR 1986. Enclosed is our first interim report. We expect to submit our next report on or about January 26, 1983 We consider 10 CFR Part 21 applicable to this deficiency.
If you have ar.y 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, Manager Nuclear Licensing Enclosure cc:
Mr. Richard C. DeYoung, Director (Enclosure)
Office of Inspection and Enforcement U.S. Nuclear Regulatory Comission Washington, D.C.
20555 8211040181 821025 FFICIAi,00P's PDR ADOCK 05000439 S
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An Equal Opportunity Employer
ENCLOSURE BELLEFONTE NUCLEAR PLANT UNIT 2 LINEAR INDICATIONS IN NAVC0 SPOOL PIECES NCR 1986 BLRD-50-439/82-63 10 CFR 50.55(e)
FIRST INTERIM REPORT Description of Deficiency Several linear indications 1/32 to 1/4 inches in depth and 2-1/2 to 19 inches in length were found in the base material (outside surface) of six (6), 8-inch od Schedule 120, ASME SA 106, grade B piping spools. These indications were noticed by TVA personnel during installation and inspec tion. The spools are part of six (6) ASME III Class 2 piping subassemblies fabricated by National Valve and Manufacturing Company (NAVCO), Pittsburgh, Pennsylvania, using piping manufactured by the United States Steel Company. All six spools were manufactured from the same material heat log (i.e., Heat Code No. L 63687). The depth of some portions of the linear indications exceed the depth allowed by ASME Section II, Part A, Material Specification, ASME SA 106, paragraph 20.1, and are considered defects.
Interim Progress All other subassemblies which utilize pipe from the identified material heat will be investigated to determine the presence of linear indications and defects.
All identified pipe spools (including those listed in NCR 1986), will be corrected to meet the requirements of the ASME Code and the material specification.
TVA will instruct its vendors and quality control personnel in giving closer inspection to meet requirements of the material specifications.
This will help mitigate future recurrences.
TVA will provide further input upon completion of our review for generic deficiencies.
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