ML082490720

SNC Letter to Phil Niebaum Cracked Coupling

ML082490720
Person / Time
Site:	Hatch
Issue date:	09/03/2008
From:	Johnson G Southern Nuclear Operating Co
To:	Phil Niebaum NRC/RGN-II/DRP/RPB2
References
Download: ML082490720 (3)

Text

G. L. Johnson (Greg)

Site Engineering Director Plant Edwin I. Hatch 11028 Hatch Parkway North Baxley, GA 31513 Tel. 912.537.5874 September 3,2008 SOUTHERN li \

COMPANY Phillip K. Niebaum NRC Resident Inspector Nuclear Regulatory Commission Plant Edwin I. Hatch Baxley, GA 3 1513

Dear Mr. Niebaum:

It is my understanding that you wish to use three photographs of the failed coupling for the swing diesel generator and one of the replacement coupling in the NRC inspection report soon to be issued that resulted from the recent special NRC inspection that was conducted. It is also my understanding that the attached pictures were taken by the resident inspector during the course of Plant Hatch's troubleshooting/repair efforts associated with the degraded coupling for the swing diesel generator. I have confirmed that these are pictures of the Hatch swing diesel generator degraded and replacement couplings.

You have permission to use these pictures for the purpose of adding value to the special inspection report and to provide needed perspective in understanding the technical issues involved.

G. L. Johnson Site ~ n g i n e e w i r e c t o r xc: S. B. Tipps File

Crack in rubber gland of the failed 1B EDG coupling viewed from diesel (Photo 1)

Close up of above crack along inner rim when viewed from diesel (Photo 2)

Another crack around inner rim on 1B EDG coupling viewed from generator (Photo 3 Replacement coupling for the 1B EDG awaiting installation (Photo 4