ML20112G064
| ML20112G064 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 12/04/1984 |
| From: | Tucker H DUKE POWER CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| 413-414-84-03, 413-414-84-3, NUDOCS 8501160174 | |
| Download: ML20112G064 (3) | |
Text
I Duxn Powna GO)mANY P.O.150X 33180 CitAHLOTTE. N.G. 28242 IIAL II. TUCKER n
Trt.Ernosz 04 DEC 10 e i 2 "[984 tea ratesners?
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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:
Please find attached a Final Report on Significant Deficiency 413-414/84-03.
All corrective action has been completed on both Unit 1 and Unit 2 diesel generators.
Very truly yours,
' Asb.
Hal B. Tucker LTP/mj f Attachment cc: Director Mr. Robert Guild, Esq.
Office of Inspection & Enforcement Attorney-at-Law U. S. Nuclear Regulatory Commission P. O. Box 12097 Washington, D. C. 20555 Charleston, S. C. 29412 NRC Resident Inspector Mr. Jesse L. Riley Catawba Nuclear Station Carolina Environmental Study Group 854 Henley Place Palmetto Alliance Charlotte, North Carolina 28207 2135 Devine Street Columbia,-South Carolina-29205
-INPO Records Center Suite 1500 1100 Circle 75 Parkway Atlanta, Georgia 30339 8501160174 841204 gDRADOCK05000
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Report Number:
SD 413-414/84-03 FINAL REPORT Report N te:
December 4, 1984 Identifin:ation of Deficiency:
A potential problem may exist with the overspeed governor and fuel trr 7fer pump drive hubs. On a non-nuclear ccmnercial diesel, the flexible coupling drive hubs were found to be loose on the shafts.
Initial Report:
On February 24, 1984, Mr A Ignatonis of the NRC, Region II, Atlanta, Georgia office was notified of these deficiencies by Mr W O Henry, Mr B R Justice, and Mr J D Heffner of Duke Power Ccxtpany, Charlotte, North Carolina, 28242.
Supplier and/or Cuien wit:
Transamerica Delaval Inc. of Oakland, California supplied the four diesel gener-ators, dasignated 1A, 1B, 2A & 2B, utilized at the Catawba Nuclear Station.
IcVejoy of Downers Grove, Illinois manufacured the hub couplings.
Description of Deficiency:
A potential problem may exist with the overspeed governor and fuel transfer pump flexible drive coupling hubs. 'Ihe hubs were found loose on the shafts on a non-nuclear diesel application.
On a nuclear application, an alarm occurs if the overspeed governor stops turn-ing and the diesel will continue to operate. However, if the fuel transfer pump stops turning, the diesel will shut down unless there is an auxiliary fuel transfer pump driven by another power source, (i.e. electric motor).
Analysis of Safety Inclication:
Based on the assumption that the hubs could work loose, and the fact that. the fuel oil booster pump. nust be manually operated to supply fuel to the diesel, a loose hub for the fuel pump could comprcmise diesels operability.
Page 2 Gaioetive Action:
he corrective action to eliminate this potential problem will be to inspect the drive for looseness of the hubs on the shafts. If the hubs are. tight, no further. action is required except to reinstall the pin, using "Iocktite 609" per the manufacturer's reccmr.endation. If the hubs are loose on the shaft, the mating surfaces will be inspected, cleaned, and the hubs reinstalled using "Inck-tite 609" per the manufacturer's recmmendations. The key and pin will be re-installed using "Iocktite 609".
The corrective action has been implemented on Units 1 & 2 of the Catawba Nuclear Station, and no_ loose hubs were found. Werefore, no further action is required regarding this matter.
D
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