ML20133P014
| ML20133P014 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 07/10/1985 |
| From: | Hufham J TENNESSEE VALLEY AUTHORITY |
| To: | Grace J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| NUDOCS 8508140105 | |
| Download: ML20133P014 (2) | |
Text
e TENNESSEE VALLEY AUTHORITY CHATTANOOGA. TENNESSEE 37401 1630 Chestnut Street Tower II July 10, 1985 BLRD-50-438/84-39 BLRD-50-439/84-36 U.S. Nuclear Regulatory Commissicn Region II Attn:
Dr. J. Nelson Grace, Regional Administrator 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323
Dear Dr. Grace:
BELLEFONTE NUCLEAR PLANTS UNITS 1 AND 2 - OMISSION OF WATER WEIGHT IN VALVES IN PIPING ANALYSIS BY TELEDYNE - BLRD-50-438/84-39, BLRD-50-439/84 SECOND INTERIM REPORT The subject deficiency was initially reported to NRC-OIE Inspector c,
P. E. Fredrickson on June 7, 1984 in accordance with 10 CFR 50.55(e) cn as NCR BLN CEB 8408. This was followed by our first interim report dated July 6, 1984.
Enclosed is our second interim report. We expect to s4E lt our next report on or about September 13, 1985.
If you have any questions, please get in touch with R. H. Shell at
-p FTS 858-2688.
co Very truly yours, cn cm TENNESSEE VALLEY AUTHORITY
..g s
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. W. Hufham, Manager Licensing and Risk Protection Enclosure cc:
Mr. James Taylor, Director (Enclosure)
Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, D.C.
20555 Records Center (Enclosure)
Institute of Nuclear Power Operations 1100 circle 75 Parkway, Suite 1500 Atlanta, Georgia 30339 l
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T ENCLOSURE BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 OMISSION OF WATER WEIGHT IN VALVES IN PIPING ANALYSIS BY TELEDYNE BLRD-50-438/84-39, BLRD-50-439/84-36 NCR BLN CEB 8408 10 CFR 50.55(e)
SECOND INTERIM REPORT Description of Deficiency In performing rigorous piping analysis on some valves in the aomponent cooling system, Teledyne Engineering Company, Waltham, Massa 2husetts, did not consider water weight inside the valves. This means that the results of the analysis are potentially unconservative for support loads, nozzles, and stress values.
One common table of valve / flange data (which did not account for the weight of the water inside the valve) was prepared to be used in a number of component cooling system problems. All of the affected piping analysis problems are listed below:
N4-1KC-P N4-2KC-P N4-2KC-G N4-0KC-K N4-2KC-H N4-2KC-N N4-1KC-M N4-2KC-M N4-1 KC-G N4-1KC-H N4-1KC-N Interim Progress As indicated in our first report on this nonconformance, TVA is reviewing the affected piping analyses to determine the need for reanalysis. The findings to date indicate that the current analysis and related designs are adequate.
We will provide further information in our next report to be submitted on or about September 13, 1985.
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