ML20077H533
| ML20077H533 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 08/05/1983 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| REF-PT21-83 10CFR-050.55E, 10CFR-50.55E, NUDOCS 8308110015 | |
| Download: ML20077H533 (2) | |
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USNR0 Regg N..
TENNESSEE VALLEY AUTHdRITNr A, g
CHATTANOOGA. TENNESSEE 374ot c
400 Chestnut Street To August 5,1983 BLRD-50-439/82-63 U.S. Nuclear Regulatory Commission Region II 4
Attn: 'Mr. James P. O'Reilly, Regional Administrator 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30303
Dear Mr. O'Reilly:
'BELLEFONTE NUCLEAR PLANT UNIT 2 - LINEAR INDICATIONS IN NAVC0 SPOOL PIECES -
BLRD-50-439/82 FOURTH INTERIM REPORT The subject deficiency was initially reported to hRC-0IE Inspector D. Quick on September 24, 1982 in accordance with 10 CFR 50.55(e) as NCR 1986. This was followed by our interim reports dated October 5,1982 and January 24, and May 2,1983 Enclosed is our fourth interim report. We i
expect to submit our next report on or about December 29, 1983. 'We consider 10 CFR Part 21 applicable to this deficiency.
If you have any questions concerning this matter, please get in touch with
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R. H. Shell at FTS 858-2688.
Very truly yours, TENNESSEE VALLEY AUTHORITY L. M. Mills,' Manager Nuclear Licensing i
Enclosure co-(Enclosure):
Mr. Richard C. DeYoung, Director i
Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission
~ Washington, D.C.
20555 Records Center Institute of Nuclear Power Operations -
1100 Circle 75 Parkway, Suite 1500 Atlanta, Georgia 30339 1
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8308110015 830805
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- An Equal Opportunity Employer -
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ENCLOSURE r
BELLEFONTE NUCLEAR PLANT UNIT 2 LINEAR INDICATIONS.IN NAVC0 SPOOL PIECES NCR 1986 BLRD-50-439/82-63 10 CFR 50.55(e)
FOURTH 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 inspection. The spools are part of six (6) ASME III Class 2 piping subassemblies fabricated by National Valve and Manufacturing Company (NAVCO), Pittsburgh, PennsyJvania, 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 l
portions of the linear indicatiens exceed the depth allowed by ASME Section II, Part A, Material Specification, ASME SA 106, paragraph 20.1, and are r
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. These subassemblies were identified in NAVCO's letter to TVA dated May 18, 1983 All defective pipe spools (including those listed in nonconformance report (NCR).1986) will be corrected to meet the requirements of the ASME Code and the material specification.
TVA has instructed its quality control personnel to perform closer inspections to ensure vendor equipment meets requirements of.the material-specifications. This will help mitigate future recurrences.
TVA will submit a final report on this deficiency upon completion of the inspection of the potentially deficient spool piece.
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