ML20079J750
| ML20079J750 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 12/21/1982 |
| 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, NCR-1887, NUDOCS 8212280340 | |
| Download: ML20079J750 (2) | |
Text
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TENNESSEE VALLEY AUTHORITY g pg j, l g' ; /.,,
CHATTANOOGA. TENNESSEE 374ot 400 Chestnut Street Tower II
'9 DE C U December 21, 1982 BLRD-50-438/82-48 BLRD-50-439/82-43 U.S. Nuclear Regulatory Comission Region II Attn:
Mr. James P. O'Reilly, Regional Administrator 101 Marietta Street, Suite 3100 Atlanta, Georgia 30303
Dear Mr. O'Reilly:
BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 - DEFICIENT STEAM GENERATOR SUPPORT BOLTS - BLRD-50-438/82-48, BLRD-50-439/82 SECOND INTERIM REPORT The subject deficiency was initially reported to NRC-0IE Inspector R. V. Crlenjak on July 23, 1982 in accordance with 10 CFR 50.55(e) as NCR 1887. This was followed by our first interim report dated August 19, 1982. Enclosed is our second interim report. We expect to submit our next report by March 31, 1983 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 cc:
Mr. Richard C. DeYoung, Director (Enclosure)
Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, D.C.
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PDR ADOCK 05000438 An Equal Opportunity Employer
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., m ENCLOSURE BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 DEFICIENT STEAM GENERATOR SUPPORT BOLTS NCR 1887 BLRD-50-438/82-48, BLRD-50-439/82-43 10 CFR 50.55(e)
,SECOND INTERIM REPORT Description of Deficiency Several 2-inch diameter bolts manufactured from SA 540 GR B24 material by Lakeside Bridge and Steel used in the upper steam generator restraints appear to be deficient. The deficiency involves loss of tension in the bolts after they were torqued to 65 percent of their ultimate strength. The bolts are in metal to metal joints. The loss of tension was discovered during reinspection of the bolts.
Interim Progress Sample bolts found loosened have been sent to Singleton Labs for testing and evaluation. TVA is awaiting the results of the testing to determine if a material deficiency exists or if the bolts can adequately perform their intended functions. More information will be forwarded in our next report.
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