ML20133P612
| ML20133P612 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 07/15/1985 |
| From: | Hufham J TENNESSEE VALLEY AUTHORITY |
| To: | Grace J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| REF-PT21-85, REF-PT21-85-373-000 PT21-85-373, PT21-85-373-000, NUDOCS 8508140390 | |
| Download: ML20133P612 (2) | |
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I r v TENNESSEE VALLEY AUTHORITY CHATTANOOGA. TENNESSEE 374o1 1630 Chestnut Street Tower II July 15, 1985 BLRD-50-438/85-19 BLRD-50-439/85-19 U.S. Nuclear Regulatory Commission Region II Attn:
Dr. J. Nelson Grace, Regional Administrator 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323
Dear Dr. Crace:
BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 - OVERHEATING OF TDI DIESEL GENERATOR CONTROL PANELS - BLRD-50-438/85-19, BLRD-50-439/85 FIRST INTERIM REPORT The subject deficiency was initially reported to NRC-OIE Inspector Al Ignatonis on June 24, 1985 in accordance with 10 CFR 50.55(e) as NCR BLN MEB 8504. Enclosed is our first interim report. We expect to submit o m next report on or about November 22, 1985. We consider 10 CFR Part 21 4ppil6@ble C-
~U to this deficiency.
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r-If you have any questions, please get in touch with R. H. Shell at j N
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Very truly yours, N
TENNESSEE VALLEY AUTHORITY i'
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- 6. W. Hufham, Manager Licensing and Risk Protection Enclosure cc:
Mr. James Jaylor, Director (Enclosure)
Office of Inspection and Enforcement U.S. Nuclear Regulatory Commission Washington, D.C.
20555 Records Center (Enclosure)
Institute of Nuclear Power Operations 1100 circle 75 Parkway, Suite 1500 Atlanta, Georgia 30339 8508140390 850715 PDR ADOCK 05000438 S
PDR An Equal Opportunity Employer gg } i l
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ENCLOSURE BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 OVERHEATING OF TDI DIESEL GENERATOR CONTROL PANELS BLRD-50-438/85-19, BLRD-50-439/85-19 NCR BLN MEB 8504 10 CFR 50.55(e)
FIRST INTERIM REPORT Description of Deficiency TVA was notified by Transamerica Delaval, Incorporated (TDI) (Dakland, California), of a potential problem with equipment overheating in the standby diesel generator control panels for Bellefonte Nuclear Plant (BLN). The deficiency is a result of inadequate provisions for ventilation of the generator control panel. Overheating of the generator control panel can cause the linear reactor, which is a component of the control panel, to fail causing the control panel circuit breakers to trip which renders the standby diesel generator inoperable.
Interim Progress TVA has received preliminary design information from TDI on installing additional ventilation in the generator control panels. TDI requested additional information from TVA in order to complete their design work. TVA is researching TDI's request and will furnish this information to TDI when available. We anticipate providing our next report on or by November 22, 1985.