ML20084G930
| ML20084G930 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 04/17/1984 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| NUDOCS 8405070397 | |
| Download: ML20084G930 (2) | |
Text
T-I TENNESSEE VALLEY AUTHORITY CH ATTANOOGA TENNESSEE 37401 400 Chestnut Street Tower II April 17,1984 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 30303
Dear Mr. O'Reilly:
BELLEFONTE NUCLEAR PLANT UNIT 1 - INCORRECT THERMAL DATA IN PROBLEM N4-1RK-A FROM PROGRAM "EZ" - BLRD-50-438/83 SECOND 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 report dated March 16, 1983 Enclosed is our second interim report. We expect to submit our next report by June 26, 1984.
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 p 5 km.
L. M. Mills, Manager Nuclear Licensing Enclosure oc:
Mr. Richard C. DeYourg, 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 h
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1983-TVA SOTH ANNIVERSARY l{g_
An Equal Opportunity Employer Ee
r ENCLOSURE BELLEFONTE NUCLEAR PLANT UNIT 1 INCORRECT THERMAL DATA IN PROBLEM N4-1RK-A FROM PROGRAM "EZ" NCR BLN CEB 8303 BLRD-50-438/83-22 10 CFR 50.55(e)
SECOND INTERIM REPORT Description 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. This was a result of using an unverified program "EZ" and a lack of verification procedures for the "EZ" program in generating the input data.
Interim Progress Reanalysis of problem N4-1RK-A for qualifying the thermal condition is complete.
The problem on the component qualification is being studied further.
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