ML20116B715
| ML20116B715 | |
| Person / Time | |
|---|---|
| Site: | Bellefonte  |
| Issue date: | 04/12/1985 |
| From: | Hufham J TENNESSEE VALLEY AUTHORITY |
| To: | Grace J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| REF-PT21-85, REF-PT21-85-229-000 NCR-4030, PT21-85-229, PT21-85-229-000, NUDOCS 8504260079 | |
| Download: ML20116B715 (2) | |
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TENNESSEE VALLEY AUTHORITY CH ATTANOOGA. TENNESSEE 37401 400 Chestnut Street Tower II 3'Pr* 19, if8s. 5 i BLRD-50438/85-11 BLRD-50439/85-11 U.S. Nuclear Regulatory Camission Region II Attn:
Dr. J. Nelson Grace, RegLonal Administrator 101 Marietta Street, NW, Suite 2900 Atlanta, Georgta 30323
Dear Dr. Grace:
BELLEFWTE NUCLEAR PLANT INITS 1 AND 2 - CRACl(ED CLINIER BLOCIll ON TDI DIESEL EIERATORS - BLRD-50438/85-11 AND BLRD-50439/85 FIRST INTERIM REPORT The subject deficiency was initially reported to NRC-OIE Inspector Al Ignatonis on March 18, 1985 in accordance with 10 TR 50.55(e) as NCR 4030.
Enclosed is our fimt interim report. We expect to submit our next report on or about July 15, 1985. We consider 10 TR Part 21 applicable to this deficiency.
If you have any questions, please get in touch wLth R. H. Shell at FTS 858-2688.
Very truly yours,
t TENNESSEE VALLEY AUTHORITY
- /
of. ii. Hufham, Manager Licensing and Regulations Enclostre cc (Enc 1asure):
Mr. Jane Taylor, Director Office of Inspecti on and Enforoement 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 W#
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r ENCLTURE BELLEFmTE NUCLEAR PLANT UNITS 1 AND 2 CRACED CYLINER BLOCK ON TDI DIESEL WERATORS BLRD-50-438/85-11 AND BLRD-50-439/85-11 NCR 4030 10 &R 50.55(e)
FIET INTERIM EPORT Description of Deficiency Upon the recommendation of the TDI Diesel Generator Owners Group, IV A implemented an extensive inspection and maintenance program that revealed cracks in components that would not ordinarily requim inspection. Dies el generator 1B contained two cracks in the cylinder block extending 1-1/2-inch up the lip of the cylinder liner landing surface and S/8-inch across the top of the block. The depth of the cracks are indeterminate at this time.
Interim Progress IVA is presently evaltating the microstructure of the block material on both unit 1 diesel generators.
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