ML17207A588

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Responds to IE Bulletin 79-23, Potential Failure of Emergency Diesel Generator Field Exciter Transformer. No Common Connection Found Between Transformers & Generators
ML17207A588
Person / Time
Site: Saint Lucie NextEra Energy icon.png
Issue date: 10/29/1979
From: Robert E. Uhrig
FLORIDA POWER & LIGHT CO.
To: James O'Reilly
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
IEB-79-23, NUDOCS 7911210012
Download: ML17207A588 (1)


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FLORIDA POVYER 5 LIGHTCOMPANy October 29, 1979 Mr. James P. O'Reilly, Director, Region II Office of Inspection and Enforcement U.

S. Nuclear Regulatory Commission 101 Marietta Street, Suite 3109 Atlanta, Georgia 30303

Dear Mr. O'Reilly:

Re:

RII:JPO 50-335 IE Bulletin 79-23 The actions required by the subject Bulletin have been satisfactorily completed at St.

Lucie Unit 1.

Documentation is available at the plant site.

The exitation transformers for the diesel-generators were inspected during the 1979 refueling outage.

No ground or common connection between these transformers and the generators was found.

A full load 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> test was completed for each diesel generator during the week ended October 19, 1979.

The required load, voltage, and frequency were maintained throughout the test and the cooling system functioned within design limits.

Very truly yours,

-gk

'ice President Advanced Systems 5 Technology REU/MAS:pg cc:

Harold Reis, Esquire 87 PEOPLE... SERVING PEOPLE Wt'yrl>ZI"")JV@4 er ytsQey <y>i;A'4rNgke IF.

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