05000333/LER-1979-097, Forwards LER 79-097/03L-0

Forwards LER 79-097/03L-0

ML19276H531
Person / Time
Site:	FitzPatrick
Issue date:	11/27/1979
From:	Leonard J POWER AUTHORITY OF THE STATE OF NEW YORK (NEW YORK
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
Shared Package
ML19276H532	List: 05000333/LER-1979-097, Forwards LER 79-097/03L-0 05000333/LER-1979-097-03, /03L-0:on 791030,emergency Diesel Generator C Would Not Properly Force Parallel W/Generator A.Caused by High Resistance Contacts on ESR-400 Relay Dalaying Flash of Emergency Generator C
References
NUDOCS 7911290371
Download: ML19276H531 (2)

LER-1979-097, Forwards LER 79-097/03L-0

Event date:
Report date:
3331979097R00 - NRC Website

text

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• s POWER AUTHORITY OF THE STATE OF NEW YORK JAMES A. FITzPATRICK NUCLEAR POWER PLANT S

JOHN D. LEONARD, JR.

P.O. Box 41 Resident Manager Lycoming, New York 13093 315 342-3840 November 27, 1979 JAFP-79-660 7

I Mr. Boyce H. Grier United States Nuclear Regulatory Commission Region 1 631 Park Avenue King of Prussia, Pennsylvania 19406 Re ference:

Docket No. 50-333 Licensee Event Report: 79-097/03L-0

Dear Mr. Grier:

We have enclosed the referenced Licensee Event Report in accordance with Section 6.0 of Technical Specifications and USNRC 1:_.

Regulatory Guide 1.16.

If there are any questions concerning this report, please contact Mr. W. Verne Childs at 315-342-3840, Extension 207 Very truly yours, O

'/

JDL:VC:Jnk John D. Leonard, Jr.

Enclosure Resident Manager CC-USNRC Director, Office of Inspection & Enforcement (30 copies)

USNR': Di rector, Office of Management information & Program ';ontrol (3 copies)

Internal Power Authority Distribution 1421 M0 l

79112903) 3

o POWER AUTHORITY OF THE STATE OF NEW YORK JAMES A. FITZPATRICK NUCLEAR POWER PLANT DOCKET N0. 50-333 ATTACHMENT TO LER 79-097/03L-0 Page 1 of 1 During norma'. operr. ion, while conducting tests to demonstrate diesel generator operability, Emergency Diesel Generator "C" would not properly force parallel with F.iergency Diesel Generator "A".

Testing was being conducted by perforsing Operations Surveillance Test F-ST-9D titled, "EDG Inoperable T(st/ Loss of 115 KV Reservd Power" to satisfy the require-ments of Technical Specifications, Appendix A, Paragraph 3.5.B.4 while the "B" containmer.L cooling loop was declared inoperable due to a hanger deficiency discovered as part of the Pipe Stress Re-Analysis Program (see LER 79-087).

Preparation for shutdown was immediately commenced to satisfy the require-ments of Technical Specifications, Appendix A, Paragraph 3.5.B.5.

Since the other Emergency Diesel Generators and off-site power were available, the event did not represent a signif'. cant hazard to the public health and safety.

Investigation revealed that flashing of the generator field on Emergency Diesel Generator "C" was beir.g delayed due to high resistance contacts on the ESR-400 relay associated with the Emergency Diesel Generator.

Cleaning and burnishing of the contacts on the relay resulted in satisfactory operation.

Operability of the Emergency Diesel Generators, including the ability to successfully force parallel, was demonstrated by satisfactory completion of F-ST-90 approximately 9 hours1.041667e-4 days <br />0.0025 hours <br />1.488095e-5 weeks <br />3.4245e-6 months <br /> after discovery of the problem.

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