ML19260A458

Responds to IE Bulletin 79-23, Emergency Diesel Generator Lube Oil Coolers. Design Review Conducted.No Connections Between High Kva & Low Kva Emergency Diesel Generators W/O Adequate Circulatory Current Limitations

ML19260A458
Person / Time
Site:	Catawba
Issue date:	11/01/1979
From:	Parker W DUKE POWER CO.
To:	James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II)
References
IEB-79-23, NUDOCS 7911210168
Download: ML19260A458 (1)

Text

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-l *. O U WILLIAM O, PA R M E R, J R.

v.cr P.c..c c T November 1, 1979 c t e..e., c a. c.,

sicAM P.oo v c T >og 373-4093 Mr. J. P. O'Reilly, Director U.S. Nuclear Regulatory Commission Region 11 101 Marietta Street, Suite 3100 Atlanta, CA 30303 Re:

RII:JP0 Catawba Nuclear Station Docket Nos.:

50-413 and 50-414

Dear Mr. O'Reilly:

In response to your letter of September 12, 1979, which transmitted IE Bulletin 79-23, we wish to advise that a review of our design for the Catawba Nuclear Station has been conducted.

This review has revealed that connections have not been made between low KVA rated transformers and high i"VA EDG's with~2t adequate limitations on the flow of circulatory current.

The diesel-generator factory test, 22 hours2.546296e-4 days <br />0.00611 hours <br />3.637566e-5 weeks <br />8.371e-6 months <br /> at full load and 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> at 110/*. load, is expected to be completed with results available January 15, 1980.

These results will be provided to you upon receipt.

Very truly yours,

./.

William O. Parker, Jr.

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