ML20073C506
| ML20073C506 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 04/06/1983 |
| 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, NUDOCS 8304130197 | |
| Download: ML20073C506 (2) | |
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TENNESSEE VALLEY AUTHORITY CH ATTANOOG A. TENNESSEE 37401
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April 6, 1983 BLRD-50-438/83-25 J'. @
BLRD-50-439/83-20 U.S. Nuclear Regulatory Commission Region II Attn:
Mr. James P. O'Reilly, Regional Administrator 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30303
Dear Mr. O'Reilly:
BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 - MANUAL ADJUSTMENT OF DIESEL GENERATOR SETPOINTS - BLRD-50-438/83-25, BLRD-50-439/83-20'- FIRST INTERIM REPORT The subject deficiency was initially reported to NRC-OIE InspectoN P. E. Fredrickson on March 9, 1983 in accordance witht10 CFR 50.55(e) as NCR BLN EEB 8302. Enclosed is our first interim-report. We expect to submit our next report by November 1, 1983 If you have any questions, please get in touch with R. H. Shell at FTS 858-2688.
c-x, Very truly yours, TENNESSEE VALLEY AUTHORITY L. M. Mills,i nager Nuclear Licensing Enclosure cc:
Mr. Richard C. DeYoung, 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 l
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An Equal Opportunity Employer
r-ENCLOSURE BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 MANUAL ADJUSTMENT OF DIESEL GENERATOR SETPOINTS BLRD-50-438/83-25, BLRD-50-439/83-20 10 CPR 50.55(e)
NCR BLN EEB 8302 FIRST INTERIM REPORT i
1 Description of Deficiency For the ' standby diesel generators at Bellefonte, there are manual voltage and frequency controls in the main control room which can adjust the voltage and/or frequency levels of one or more diesel generators to values below the ready-to-load set points used during the automatic start-3 automatic load sequence. Because the diesel generators lack an automatic reset capability for output voltage and frequency during automatic starts, low manual setting would prevent the misadjusted generator (s) from initiating the automatic load sequence. Also, since adjustments away from acceptable values are not alarmed, the misadjustment(s) could go undetected until after an automatic start is initiated.
Interim Progress i
TVA has begun contractual inquiries with Delaval, the diesel generator vendor, to modify the existing equipment.
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