ML20100P434
| ML20100P434 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 11/20/1984 |
| From: | Hufham J TENNESSEE VALLEY AUTHORITY |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| REF-PT21-84-546-000 NCR-3511, PT21-84-546, PT21-84-546-000, NUDOCS 8412140234 | |
| Download: ML20100P434 (2) | |
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'3 TENNESggAgYguTHORITY CHAgyOOf>A),TE,NN,(fq4W/374ot 400 Chestnut Street Tower II BLRD-50-438/84-53 bN BLRD-50-439/84-49 U.S. Nuclear Regulatory Commission Region II Attn:
Mr. James P. O'Reilly, Regional Admiriistrator 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323
Dear Mr. O'Reilly:
BELLEFONTE NUCLEAR PLANT UNITS 1 AND 2 - VARIOUS DEFICIENCIES INVOLVING LAMBDA POWER SUPPLIES - BLRD-50-438/84-53 AND BLRD-50-439/84 FIRST INTERIM REPORT The subject deficiency was initially reported to NRC-0IE Inspector P. E. Fredrickson on October 25, 1984 in accordance with 10 CFR 50.55(e) as NCR 3511. Enclosed.is our first interim report. We expect to submit our next report on or about March 1, 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, TENNESSEE VALLEY AUTHORITY OMAA
[rJ.W.Hufham, Manager Licensing and Regulations Enclosure oc (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 B412140234 841120 PDR ADOCK 05000438 S
PDR OFFICTM. mry W- [
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t An Equal Opportunity Employer
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ENCLOSURE BELLEFONTE NUCLEAR-PLANT. UNITS 1 AND 2 VARIOUS DEFICIENCIES' INVOLVING LAMBDA POWER SUPPLIES BLRD-50-438/84-53, BLRD-50-439/84-49 NCR 3511 10 CFR 50.55(e)
FIRST INTERIM REPORT Description of Deficiency Various deficiencies have been identified with the Lambda power supplies. installed in Bailey Controls Company (BCCo). cabinets at Bellefonte Nuclear Plant.(BLN). The BCCo cabinets were supplied to TVA by Babcock and Wilcox (B&W) on the NSSS contract for BLN. The Lambda power supplies are components of the reactor protection system (RPS), engineered safety features. actuation system (ESFAS), essential.
controls and instrumentation (ECI) system, and the nonnuclear
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instrumentation (NNI) system. The RPS, ESFAS, ECI, and NNI systems are. primary safety-related systems which, among other essential functions,. provide protection to the reactor core during a loss of coolant accident (LOCA),-a steam line break, or a feedwater line break. The subject deficiencies involve missing components, loose connections, incorrectly sized capacitors, corroded transformers, and.
others.
Interim Progress The subject nonconformance report (NCR) has been referred to TVA's Office of Engineering (OE) for evaluation and disposition. TVA has notified B&W of the deficiency and is working with B&W to determine the corrective action for this item.
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