ML20134H500
| ML20134H500 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 08/16/1985 |
| From: | Hufham J TENNESSEE VALLEY AUTHORITY |
| To: | Grace J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| NCR-BLNCEB8303, NUDOCS 8508280440 | |
| Download: ML20134H500 (2) | |
Text
__
i 6
TENNESSEE VALLEY AUTHORITY CHATTANOOGA, TENNESSEE 37401 400 Chestnut Street Tower II'fj~r!nEO i
A[Q,' g b.
August 16, 1985 BLRD-50-438/83-22 U.S. Nuclear Regulatory Commission Region II Attn:
Dr. J. Nelson Grace, Regional Administrator 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323
Dear Dr. Grace:
BELLEFONTE NUCLEAR PLANI UNIT 1 - INCORRECT THERMAL DATA IN PROBLEM N4-1R FROM PROGRAM "EZ" - BLRD-438/83 FINAL REPORT This subject deficiency was initially reported to NRC-CIE 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, June 21 and December 20, 1984 and April 14, 1985. Enclosed is our final report indicating that TVA no longer considers this deficiency reportable under the provisions of 10 CFR 50.55(e).
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 i
J. W. Hufham, Manager Licensing and Risk Protection Enclosure Mr. James Taylor, Director (Enclosure) cc:
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 8508280440 850816 PDR ADOCK 05000438 S
pon 1\\
_J An Equal Opportunity Employer jg g
, ;r ENCLOSURE BELLEFONTE NUCLEAR PLANT UNIT 1 INCORRECT THERMAL DATA IN PROBLEM N4-1RK-A FROM PROGRAM "EZ" BLRD-50-438/83-22 NCR BLNCEB8303 10 CFR 50.55(e)
FINAL REPORT Description of Deficiency The essential air compressor system has not been qualified for the thermal loading condition evaluated in analysis problem N4-1RK-A.
In reviewing the issued analysis problem for design change request (DCR) 2372, the results could,not be verified due to the input of unverified 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.
F Safety Implications TVA's review of analysis problem N4-1RK-A resulted in the deletion of one compressed air system support although all supports were fully capable of performing their design 02nction with that support in place.
In addition, minor changes were made in the loads on 26 other compressed air system supports which did not require any change in the support designs.
Consequently, since TVA has determined that the original design was fully capable of performing its required function, no condition adverse to the safe operation of the plant existed with regard to essential air system supports.
In addition, TVA has determined that "EZ" program output does not require verification since its function is to create a data input deck for a piping analysis program which is routinely checked during the normal calculation procedure. A review of similar data inputs and associated problems indicates that the cited deficiency is an isolated case which does not require further corrective action.
Consequently, since no design or quality assurance problem exists, TVA no longer considers this deficiency reportable under the provisions of 10 CFR 50.55(e).
.