ML20205P253
| ML20205P253 | |
| Person / Time | |
|---|---|
| Site: | Catawba  |
| Issue date: | 05/01/1986 |
| From: | Tucker H DUKE POWER CO. |
| To: | Grace J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| References | |
| NUDOCS 8605210288 | |
| Download: ML20205P253 (2) | |
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DUKE POWER GOMPANY P.O. HOX 33189 CHARLOTTE, N.C. 28242 HALB. TUCKER retitessons vu:s renama=r (704) 073-4538 worassa roonerview May 1, 1986 Dr. J. Nelson Grace, Regional Administrator U. S. Nuclear Regulatory Conunission Region II 101 Marietta Street, NW, Suite 2900 Atlanta, Georgia 30323 Re: Catawba Nuclear Station, Unit 2 Docket No. 50-414 l
Dear Dr. Grace:
Pursuant to Technical Specification 4.8.1.1.3 and 6.9.2, please find attached a Special Report concerning the valid failure of Diesel Generator 2A which occurred on April 1, 1986.
Very truly yours, o
Hal B. Tucker RWO: sib Attachment ec: Director Office of Inspection and Enforcement U. S. Nuclear Regulatory Connaission Washington, D. C.
20555 NRC Resident Inspector Catawba Nuclear Station dhhCK05000414
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SPECIAL REPORT Diesel Generator 2A Valid Failure on 04-01-86 As required by Technical Specification 4.8.1.1.3 and Station Directive 2.8.1, the following information concerns the valid failure which occurred on Diesel Generator (D/G) 2A on April 1,1986. This valid failure was the third failure within the last 15 valid tests for the Unit 2 Diesel Generators. Please note that as of April 1, 1986, the 2A and 2B Diesel l
Generators had only completed 15 valid tests (this includes three valid failures).
During the performance of PT/2/A/4350/02A (D/G 2A Operability Periodic Test), D/G 2A failed to start. This was caused by.the fuel racks not opening. It was later found that a leaking fuel eductor contributed to the failure by allowing the fuel oil header to drain and become air bound thus preventing a start.
The fuel racks were subsequently lubricated and the leak on the fuel oil eductor was repaired. D/G 2A was restarted and verified operable by performing D/G 2A Operability Periodic Test.
The 2A D/G was declared inoperable on April 1, 1986 at 1700 hours0.0197 days <br />0.472 hours <br />0.00281 weeks <br />6.4685e-4 months <br /> and was subsequently declared operable on April 2, 1986 at 0200 hours0.00231 days <br />0.0556 hours <br />3.306878e-4 weeks <br />7.61e-5 months <br />. Therefore, the 2A D/G was out of service for 9 hours1.041667e-4 days <br />0.0025 hours <br />1.488095e-5 weeks <br />3.4245e-6 months <br />. At this time, the surveillance testing interval is 7 days which is in accordance with Section C.2.d.4 of Regulatory Guide 1.108 Revision 1 (Periodic Testing of Diesel Generator Units Used as Onsite Electrical Power Systems at Nuclear Power Plants).
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