ML20079M348
| ML20079M348 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 02/16/1983 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, NUDOCS 8302230645 | |
| Download: ML20079M348 (2) | |
Text
a TENNESSEE VALLEY AUTHORITY o
CH ATTANOOGA. TENNESSEE 374o1 400 Chestnut Street Tower II February 16, 1983 La m
BLRD-50-438/83-13 0
BLRD-50-439/83-09
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U.S. Nuclear Regulatory Commission E0 Region II Attn:
Mr. James P. O'Reilly, Regional Administrator co 101 Marietta Street, Suite 3100 2 5 Atlanta, Georgia 30303
Dear Mr. O'Reilly:
BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 - IMPROPERLY QUALIFIED N0ZZLE LOADS
- BLRD-50-438/83-13, BLRD-50-439/83 FIRST INTERIM REPORT The subject deficiency was initially reported to NRC-0IE Inspector
(
D. Verreli on January 24, 1983 in accordance with 10 CFR 50.55(e) as NCR BLN CEB 8220. Enclosed is our first interim report. We expect to submit our next report by April 27, 1983 If you have any questions, please get in touch with R. H. Shell at FTS 858-2688.
Very truly yours, TENNESSEE VALLEY AUTHORITY 3
L. M. Mills, Manager Nuclear Licensing Enclosure cc:
Mr. Richard C. DeYoung, Director (Enclosure)
Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, D.C.
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ENCLOSURE BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 IMPROPERLY QUALIFIED N0ZZLE LOADS BLRD-50-438/83-13, BLRD-50-439/83-09 NCR BLN CEB 8220 10 CFR 50.55(e)
FIRST INTERIM REPORT Description of Deficiency Piping analysis problems N4-1ND-A, 'Al'-2ND-A, N4-1ND-B, N4-2ND-B, N4-1(2)NV-A, and N4-1(2)NV-M were issued using improperly qualified nozzle loads. The manufacturer's equipment specifications for nozzle qualifica-tion was not followed. Typically, evaluations are made for normal, upset, and faulted conditions. However, in the subject piping analysis problems, only a faulted evaluation using incorrect allowables was performed. This improper evaluation could result in unqualified nozzles in the normal or upset condition. The decay heat removal (DHR) and the makeup and purification (MU/P) pump nozzles are the ones affected. Additionally, further evaluation to qualify the flange bolts required by the manufacturer's equipment specifications was not performed.
Interim Progress TVA is currently reviewing Bellefonte piping analysis packages to ensure that all nozzle qualifications are being performed in accordance with the manufacturer's equipment specifications. Any improperly qualified nozzle loads found during the review will be analyzed and recalculated to meet manufacturer's specifications. Any other problems will be documented and reported accordingly.
Teledyne Engineering Services of Walpham, Massachusetts, who performed the piping analysis evaluations, has been advised of this deficiency and will be requested to provide a root cause and action required to prevent recurrence.'
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