ML20112D146
| ML20112D146 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 12/20/1984 |
| From: | Hufham J TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| NUDOCS 8501140101 | |
| Download: ML20112D146 (2) | |
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,,_s-r N-TENN SEE VALL,ggTHORITY E
CHATJAADNA TENNj % N 7401 400,ChestNt Stfeit Tower II 84 DECN ggb(?,20, 198 4 BLRD-50-438/83-22 U.S. Nuclear Regulatory Commission Region II Attn:
Mr. James P. O'Reilly,. Regional Administrator 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia ~ 30323 Jear Mr. O'Reilly:
a BELLEFONTE NUCLEAR PLANT UNIT 1 - INCORRECT THERNAL DATA IN PDOBLEM N4-1RK-A FROM PROGRAM "EZ" - BLRD-50-438/83 FOURTH INTERIM REPORT The subject deficiency was initially reported to NRC-0IE Inspector Linda Watson on February 16, 1983 in accordance with 10 CFR 50.55(e) as NCR BLN CEB 8303 This was followed by our interim reports dated March 16, 1983 and April 17 and June 21, 198 4.
Enclosed is our fourth interim repor t.
We expect to submit our next report by April-17, 1985.
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 -
pam,u va Panager J. W. Hu L
ensing %. Regulations Enclosure
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00: Mr. Richard C. DeYoung, Director (Enclosure)
L Office Lof Inspection and Enforcement U.S. Nuclear-Regulatory Commission Washington, D.C.
20555
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Records Center (Enclosure)
Institute of Nuclear Power, Operations 7
1100 circle'75 Parkway, Suite -1500 ^
Atlanta, Georgia 30339
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-j 8501140101 841220 9
PDR ADOCK 05000438 8
PDR g COPY..
Pe7 i i An Equal Oppor' unity Employer
ENCLOSURE v
BELLEFONTE NUCLEAR PLANT UNIT 1 INCORRECT THERMAL DATA IN PROBLEM N4-1RK-A FROM PROGRAM "EZ" c> -
NCR BLN CEB 8303 BLRD-50-438/83-22 10 CFR 50.55(e)
J FOURTH INTERIM REPORT Descriotion of Deficiency Analysis problem N4-1RK has not been qualified for the thermal loading condition on essential air compressor system piping supports.
In reviewing the issued analysis problem for Design Change Request (DCR) 2372, the results were found to be wrong due to the input of incorrect thermal data. Thit%s'a result of using an unverified program "EZ" and a lack of verification procedures for the "EZ" program in generating the input data.
4 Interim Progress
.TVA has completed the reanalysis of problem N4-1RK-A referenced in our previous report.. One essential air compressor system support was mmoved and 26 supports were subject to a small increase in load as a result of the reanalysis. The pertinent isometric drawing and load tables have been revised and the affected support designs are being mvised.
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