ML20087N816
| ML20087N816 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 03/23/1984 |
| From: | Tucker H DUKE POWER CO. |
| To: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| SD413-414-84-03, SD413-414-84-3, NUDOCS 8404050025 | |
| Download: ML20087N816 (3) | |
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-E DUKE POWER GOMPAhT P.O. BOX 33180 CHARLOTTE, N.C. 28242 HAL B. TUCKER nurnon hkkf {168: 53 (7 % 3 m m t
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March 3,
Mr. James P. -0'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 No. SD 413-414/84-03.
Very truly yours, el h Hal B. Tucker
.LTP/php; Attachment cc:' Director-INP0 Records Center 0ffice of Inspection & 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 2135} Devine Street Columbia, South Carolina 29205.
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.C JP0/HBT/LTP March 23,1984 Duke Pow:r Company Catawba Nuclear Station
. Report Number:
SD 413-414/84-03 Report Date:
March 23, 1984 Facility: Catawba Nuclear Station Units 1 & 2 Identification of Deficiency:
A potential problem may exist with the overspeed governor and fuel transfer pump drive hubs. On a non-nuclear coninercial 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 0 Henry, Mr B R Justice, and Mr J D Heffner 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, 18, 2A & 28, utilized at the Catawba Nuclear Station.
Lovejoy Inc. of Downers Grove, Illinois manufactured the hub couplings.
Description of Deficiency:
A potential problem may exist with the overspeed governor and fuel transfer pump flexible drive coupling hubs. The 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 turning 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).
The Catawba diesels have not been inspected for loose hubs due to ongoing Unit 1 preoperational testing. Following the completion of preoperation testing, c
the diesels will be. inspected for loose hubs.
Analysis of Safety Implication:
Based on the assumption that the hubs could work loose, and the fact that the fuel oil booster pump must be manually operated to supply fuel to the diesel, a loose hub for the fuel. pump could compromise diesels operability.
JP0/HBT/LTP
..E March 23,1984 Corrective Action:
The corrective action to eliminate this potential problem will be to inspect Lthe drive f6r looseness of the hubs on the shafts.
If the hubs are tight, no further action is required except to reinstall the pin and set screw,
.using.'!Locktite 609" per the manufacturer's recommendation.
If the hubs are loose on the shaft, the mating surfaces will be inspected, cleaned, and the hubs will.be reinstalled using "Locktite 609" per the manufacturer's recommendations.
The key, screw and pin will be reinstalled using "Locktite 609."
-The corrective action for Unit 1 is expected to be completed prior to fuel load, and the corrective action for Unit 2 will be completed by September 3,1984.