ML20099E949
| ML20099E949 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 01/07/1985 |
| From: | Hufham J TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| NUDOCS 8503140109 | |
| Download: ML20099E949 (2) | |
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TENNESSEE VALLEY AUTHORI's CH ATTANOOGA. TENNESSEE 37401 400 Chestnut Street Tower II N 0 E U P I.* bq'nuary 7, 1985 BLRD-50-438/82-67, -439/82-60 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 UNITS 1 AND 2 - POTENTIALLY OVERSTRESSED EMBEDDED PLATES - FINAL REPORT The subject deficiency was initially reported to NRC-0IE Inspector R. V. Crlenjak on April 12, 1982 in accordance with 10 CFR 50.55(e) as NCR WBN CEB 8203 Interim reports were submitted on May 18 and July 13, 1982. This deficiency was subsequently expanded to cover Bellefonte, Yellow Creek, and Hartsville Nuclear Plants as NCR GEN CEB 8208. TVA then submitted interim reports dated October 14, 1982, April 4, 1983, and February 14 and June 18, 1984. Our final report on Watts Bar was submitted on May 27,1983 Enclosed is our final report on Bellefonte.
TVA does not row consider the subject rnnconforming condition adverse to the safe operation of the plant. Therefore, we will amend our records to delete the subject renconformance as a 10 CFR 50.55(e) item.
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
i. W. Hufham, Manager J
Licensing and Regulations Enclosure cc (Enclosure):
Mr. Richard C. DeYoung, Director Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, D.C.
20555 Records Center Institute of Nuclear Power Operations 1100 Circle 75 Parkway, Suite 1500 Atlanta, Georgia 30339 sscst401ov cco:c7 PDR ADOCK 05000438
'OmCIAC COPY.
S PDR An Equal Opportunity Empicyer
ENCLOSURE ECLLEFONTE NUCLEAR PLANT UNITS 1 AND 2 TOTENTIALLY OVERSTRESSED EMBEDDED PLATES BLRD-50-438/82-67 AND BLRD-50-439/82-60 NCR GEN CEB 8208 10 CFR 50.55(e)
FINAL REPORT Description of Deficiency After reviewing Watts Bar Nuclear Plant (WBN) nonconformance report (NCR) 3842R, which was separately reportable (WBRD 50-390/82-14, -
391/82-14) and which concerned positioning of expansion anchors near embedded plates with attachments, TVA recognized' that one aspect of NCR 3842R needed to be reported separately. This separate concern was that multiple supports had been attached to embedded plates throughout the WBN without a design review of the embedded plates' capability and was identifled as NCR WBN SWP 8210 (WBRD-50-390/82-39, -391/82-36). A final report on this item was submitted to NRC on May 27, 1983 Because the apparent cause of this item was identified as a lack of control procedures and documentation requirements concerning the loading limits of embedded plates, TVA was concerned with the generic aspects of the condition and issued NCR GEN CEB 8208 to investigate this problem's effect on Bellefonte Nuclear Plant (BLN).
Safety Implications TVA has completed a sampling program of 48 embedded plates with multiple attachments and has determined that the attachments installed to dite are adequate.
(The sampling program was to originally include 60 plates, but only 48 platepould be identified which had significantly loaded multiple attachments.h The results of the sampling program indicate that an adequate level of safety " exists against concrete failure for all plates in the sample. Also, existing drawing notes combined with existing design programs (i.e., squadcheck, field diange request, anchor and support variance) are adequate to prevent this type deficiency from developing at BLN. As such, TVA has determined that no safety concern exists for BLN and that 10 CFR 50.55(e) no longer applies.
TC 2 7
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