ML20092M568
| ML20092M568 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 06/21/1984 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| NUDOCS 8407020301 | |
| Download: ML20092M568 (2) | |
Text
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TENNESSEE VALLEY AUTHORITY CHATTANOOGA. TENNESSEE 374ol 400 Chestnut Street Tower II M JUN ?.5 Pl2 ; 47.
June 21,1984 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 30323
Dear Mr. O'Reilly:
BELLEFONTE NUCLEAR PLANT UNIT 1 - INCORRECT THERMAL DATA IN PROBLEM N4-1RK-A FROM PROGRAM "EZ" - BLRD-50-438/83 THIRD 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, 1984. Enclosed is our third interim report. We expect to submit our next report by December 21, 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 L. M. Mills, Manager Nuclear Licensing Enclosure oc:- Mr. Richard C. DeYoung, 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 8407020301 B40621 PDR ADOCK 05000438 g
PDR OFFICIALMd 1983-TVA 5OTH ANNIVERSARY M
1 g An Equal Opportunity Employer l
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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)
THIRD 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 In Subsequent investigation has disclosed no problems with the thermal data.
addition, TVA has determined that the "EZ" program does not require verification since its fbnction was to create a TPIPE input deck which is subjected to a separate check during the normal calculation procedure. TVA is still in the process of reanalyzing problem N4-1RK-A in order to verify that the thermal loading condition in the essential air compressor system is qualified.
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