ML20116D669
| ML20116D669 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 04/09/1985 |
| From: | Tucker H DUKE POWER CO. |
| To: | Grace J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| NUDOCS 8504290510 | |
| Download: ML20116D669 (2) | |
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S 6.3 DUKE POWER GOMPANY P.O. Box 33180 CHAMLOTTE, N.C. 28242 IIAL II. TUCKER Tetzenose
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g gpg 17Apnil 35B85 Dr. J. Nelson Grace, Regional Administrator U. S. Nuclear Regulatory Commission Region II 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323 Re: Catawba Nuclear Station, Unit 1 Docket No. 50-413
Dear Dr. Grace:
Pursuant to Technical Specifications 4.8.1.1.3 and 6.9.2, please find attached a Special Report concerning the valid failure of Diesel Generator 1A which occurred on March 14, 1985.
Very truly yours, Yb %ln~yg Hal B. Tucker RW0: sib Attachment cc:
Director Office of Inspection and Enforcement U. S. Nuclear Regulatory Commission Washington, D. C.
20555 NRC Resident Inspector Catawba Nuclear Station Palmetto A111cnce 21351 Devine Street Columbia, South Carolina 29205 Mr. Jesse L. Riley Carolina Environmental Study Group 854 Henley Place Charlotte, North Carolina 28207 Robert Guild, Esq.
P. O. Box 12097 f
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Charleston, South Carolina 29412 sW 8504290510 850409 0
PDR ADOCK 05000413 S
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.6 Special Report Diesel Generator 1A Valid Failure-information As required by Technical Specification 4.8.1.1.3 the following(D/G) 1A on concerns the valid failure which occurred on Diesel Generator March 14, 1985. This valid failure was the first failure within the last 14 valid tests for the Unit 1 Diesel Generators.
Please note that as of March 14,1985, the 1A & 18 Diesel Generators had only completed 14 valid tests (this includes the valid failure).
The cause of the valid failure was the result of a clogged strainer on the engine fuel supply piping.
To correct the malfunction, the strainer was swapped out and the engine was restarted and verified operable. The 1A D/G was declared inoperable at 1250 and was subsequently declared operable at 1700. Therefore, the 1A D/G was out of service for 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> and 10 minutes. At this time, the surveillance testing interval was still 31 days which is in accordance with section C.2.d.1 of Regulatory Guide 1.108 (Periodic Testing of Diesel Generator Units Used as Onsite Electric Power
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Systems at Nuclear Power Plants).
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