ML20198C981
| ML20198C981 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 10/09/1985 |
| From: | Hufham J TENNESSEE VALLEY AUTHORITY |
| To: | Grace J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| NCR-2496, NUDOCS 8511120237 | |
| Download: ML20198C981 (2) | |
Text
O TENNESSEE VALLEY AUTHORITY CHATTANOOGA. TENNESSEE 37401 400 Chestnut Street To e II g r. n n T \\ 5 AB' 3 otoetober 9, 1985 BLRD-50-438/84-01 BLRD-50-439/84-01 U.S. Nuclear Regulatory Coaunission Region II Attn:
Dr. J. Nelson Grace, Regional Administrator 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323
Dear Dr. Grace:
BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 - FAILED G.E. TRIP BREAKERS -
BLRD-50-438/84-01, BLRD-50-439/84 THIRD INTERIM REPORT The subject deficiency was initially reported to NRC-0IE Inspector P. I. - Fredrickson on December 14, 1983 in accordance with 10 CFR 50.55(e) as NCR 2496. This was followed by our interim reports dated January 11 and May 8, 1984. Rnclosed is our third interim report. We expect to submit our next report no later than six months before fuel loading.
If you have sny questions, please get in touch with R. H. Shell at FTS 858-2688.
Very truly yours, TENNESSEE VALLEY AUTHORITY rwtit
. W. Hufham, Manager Licensing and Risk Protection Enclosure cc:
Mr. James Taylor, Director (Enclosure)
Office of Inspection and Enforcement U.S. Nuclear Regulatory Comunission Washington, D.C.
20555 Records Center (Enclosure)
Institute of Nuclear Power Operations 1100 circle 75 Parkway, suite 1500 Atlanta, Georgia 30339 ga l20237 333 009 8
ADOCM 05000438 PDR
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An Equal Opportun6ty Employer L
r-A ENCLOSURE BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 FAILED GENERAL ELECTRIC TRIP BREAKERS BLRD-50-438/84-01, BLRD-50-439/84-01 NCR 2496 10 CFR 50.55(e)
THIRD INTERIM REPORT Description of Deficiency Trip breakers 1NR-52-015-F and 016-C failed testing because they would not close. Some of the electrical contacts that function during the close stroke also appear to be burned. A contributing factor of the failure appears to be a lack of proper maintenance or storage.
Interim proaress
- TVA is pursuing resolution of this issue through the B&W Owners Group in coordination with General Electric.
B&W has committed to provide TVA with their final recommended corrective actions for TVA's review and approval by December 1985. However, TVA has received information via WRC Information Notice (IN) 85-58 concerning a failure of breakers at the Rancho Seco Nuclear power Generator Station which are identical to TVA's breakers referenced above. Rancho Seco's breakers failed after being refurbished by B&W in the same manner intended for TVA's breakers. Consequently. TVA is assessing the impact of the information in IN 85-58 on the corrective actions proposed for the deficiency described above. TVA will provide a final report no later than six months prior to fuel loading.
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