ML20098E521
| ML20098E521 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 09/11/1984 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| NUDOCS 8409280599 | |
| Download: ML20098E521 (2) | |
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TENNESSEE VALLEY AUTHORITY OFFICIAL COPY CHATTANOOGA. TENNESSEE 37401 400 Chestnut' Street Tower II
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September 11, 1984 BLRD-50-438/84-45 BLRD-50-439/84-41
- U.S. Nuclear Regulatory Comission Region'II Attn:
Mr. James P. O'Reilly, Regional Administrator 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323
Dear Mr. O'Reilly:
BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 - SUPPORTS MAY BE IMPROPERLY ATTACHED TO INTENSIFIED COMPONENTS - BLRD-50-438/84-45, BLRD-50-439/84 FIRST INTERIM REPORT The subject deficiency was initially reported to NRC-0IE Inspector P. E. Fredrickson on August 9, 1984 in accordance with 10 CFR 50.55(e) as NCR BLN CEB 8411. Enclosed is our first interim report. We expect to submit our next report on or about January 29, 1986.
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 DS W 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 Records Center (Enclosure)
Institute of Nuclear Power Operations 1100 Circle 75 Parkway, Suite 1500 Atlanta, Georgia 30339 i
OFFICIAL COPY 8409280599 840911
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ENCLOSURE-BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 RIGOROUSLY ANALYZED SUPPORT LOCATIONS NOT VERIFIED BLRD-50-438/84-45, BLRD-50-439/84-41 NCR BLN CEB 8411 10 CFR 50.55(e)
FIRST INTERIM REPORT.
Description of Deficiency-Some pipe supports designed by ITT-Orinnell, Providence, Rhode Island,
- and located on alternately analyzed safety-related systems have incorporated welded pipe attachments on intensifieo components. These components are typically piping elements such as elbows, tees, etc.,
that are subject to stress intensification. This arrangement violates TVA's alternate analysis criteria anc is an unacceptable design-configuratia1.
~ Interim Progress TVA is in the process of determining the locations and number of ITT-Grinnell-designed integral attachments welded to intensified components on alternately analyzed systems. An evaluation will then be made to determine the corrective action to be taken against the deficient designs.
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