ML20093E354
| ML20093E354 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 09/19/1984 |
| From: | Mills L TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| REF-PT21-84-479-000 PT21-84-479, PT21-84-479-000, NUDOCS 8410120070 | |
| Download: ML20093E354 (2) | |
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- TENNESSEE VALLEY AUTHORITY CHATTANOCGA. TENNESSEE 37401 400 Chestnut Street Tower II Olitbgrj19,1984 44 BLRD-50-438/84-46 BLRD-50-439/84-42 U.S. Nuclear Regulatory Countission 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 - FOREIGN MATERIAL IN BATTERIES BY C&D BATTERIES - BLRD-50-438/84-46, BLRD-50-439/84 FIRST INTERIM REPORT The subject deficiency was initially reported to NRC-0IE Inspector P. E. Fredrickson on August 22, 1984 in accordance with 10 CFR 50.55(e) as NCR BLN EEB 8416. Enclosed is our first interim report. We expect to submit our next report on or about August 23, 1985. We consider 10 CFR Part 21 applicable to this deficiency.
If you have any questions, please get in touch with R. H. Shell at FTS 858-2688.
Very truly yours, TEPIESSEE VALLEY AUTHORITY L7M. 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.
20555 t
Records Center (Enclosure)
Institute of Nuclear Power Operations 1100 Circle 75 Parkway, Suite 1500 Atlanta, Georgia 30339 l
l e410120070 840919 i
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PDR ADOCK 05000 S
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An Equal Opportunity Employer
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ENCLOSURE BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 FOREIGN MATERIAL IN BATTERIES BY C&D BATTERIES BLRD-50-438/84-46, BLRD-50-439/84-42 10 CFR 50.55(e)
NCR BLN EEB 8416 FIRST INTERIM REPORT Description of Deficiency During preop test FT-EU-01 A, TVA noted '. hat one of the eight Bellefonte vital batteries, battery 1EB-EU-50-D, failed to develop its rated capacity. Through discussions with the battery manufacturer, C&D batteries of Plymouth Meeting, Pennsylvania, TVA has determined that this reduced output is due to internal shorting of cell plates induced by the presence of "reigel wrap" material. - This "reigel wrap," used as a mat between the cell positive plates and the separators, is sheddi.tg and filling the cell area normally reserved as sediment space. This material coupled with the normal shedding of active material. from the plates increases the potential for internal short circuits.
Interim Progress TVA is in the process of replacing all eight vital batteries with new ones that do not use "reigel wrap." We will provide additional information after the replacements have been secured.
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