ML20085K720
| ML20085K720 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 10/13/1983 |
| From: | Tucker H DUKE POWER CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| 10CFR-050.55E, 10CFR-50.55E, SD-413-414-83-1, NUDOCS 8310210111 | |
| Download: ML20085K720 (3) | |
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DUKE POWElt Gonnov cuN?0 ONh u n n. TUCKER October 13, 1983 Mr. James P. O'Reilly, Regional Administrator U. S. Nuclear Regulatory Commission Region II 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30303 Re: Catawba Nuclear Station Units 1 and 2 Docket Nos. 50-413 and 50-414
Dear Mr. O'Reilly:
Pursuant to 10 CFR 50.55e, please find attached Significant Deficiency Report SD 413-414/83-12.
Very truly yours,
/
al t&bG Hal B. Tucker LTP/php Attachment cc: Director INP0 Records Center Office of Inspection and Enforcement Suite 1500 U. S. Nuclear Regulatory Commission 1100 Circle 75 Parkway Washington, D. C. 20555 Atlanta, Georgia 30339 NRC Resident Inspector Mr. Robert Guild, Esq.
Catawba Nuclear Station Attorney-at-Law P. O. Box 12097 Palmetto Alliance Charleston, South Carolina 29412 21351 Devine Street Columbia, South Carolina 29205
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8310210111 831013 PDR ADOCK 05000413 S
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JP0/HBT/LTP October 13, 1983 Catawba Nuclear Station Report Number: SD 413-414/83-12 Report Date: October 13, 1983 Facility: Catawba Nuclear Station Units 1 & 2 Identification of Deficiency:
One metal file each has been found in each of two diesel generators designated 1B and 2A.
The 1B generator was damaged but the 2A generator was not.
These deficiencies were identified to the NRC September 13, 1983 by Duke Power Company.
Initial Report:
On September 13, 1983, Mr. Virgil Brownlee of the NRC, Region II, Atlanta, Georgia office was notified of these deficiencies by Mr. L. Coggins, Mr. J. M. Lines, and Mr. M. L. Childers of Duke Power Company, Charlotte, North Carolina 28242.
Supplier and/or Component:
Transamerica Delaval, Inc., of Oakland, California supplied the four diesel generators designated 1A, 1B, 2A and 2B utilized at the Catawba Nuclear Station.
Parson Peebles/ Electric Products of Cleveland, Ohio manufactured the four generators.
Description of Deficiency:
The 1B generator stator was damaged due to the file getting into the air gap between the rotor and stator during the diesel preliminary check-out and rotation of the diesel.
The file was found in generator 2A, during the preoperational inspection, prior to rotation, and consequently, no damage occurred.
o Assuming the files would have remained undetected, the operability of th; diesel generators could be compromised.
Analysis of Safety Implication:
Based on the assumption that a file could remain undetected in the generator internals, this situation could compromise the diesel generator's ability to provide emergency power as required.
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JP0/HBT/LTP October 13, 1983 Corrective Action:
The 18 diesel generator stator was replaced by the 2A stator.
It is expected that the damaged 1B stator will be returned to the manufacturer for a complete rebuild, and eventually used in lieu of the 2A stator. The expected completion date is June 1, 1984.
The 1B diesel generator rotor was superficially damaged by the file, and was repaired on site by Duke Power personnel under the direction of a Parsons Peebles/ Electric Products technical representative.
The 1B diesel generator has been restored to an "as new condition" and is presently in the process of preoperational testing and checkout.
Initially, Duke Power Company considered possible sources of the filer' origin, which included:
- 1) Origin at Parson Peebles/ Electric Products
- 2) Origin at Transamerica Delaval, Inc.
- 3) Origin at Catawba Nuclear Station In order to detennine the origin of the files, Duke Power Company had multiple analyses performed on paint samples obtained from the files and diesel generator internals. Duke Power Company is now discussing the origin of the files with Transamerica Delaval, Inc. A final report is expected by June 1,1984.
Duke Power has reinspected all four of the diesel generators at Catawba for metal files and other foreign objects. No additional foreign objects have been found.
In addition, security measures have been taken, and will be periodically checked to assure the integrity of the diesel generators.