ML042960358
| ML042960358 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 06/28/2004 |
| From: | Straka D Arizona Public Service Co |
| To: | Gody A Operations Branch IV |
| References | |
| FOIA/PA-2004-0307 | |
| Download: ML042960358 (1) | |
Text
From:
<DSTRAKA@a Pc.com>
To:
<atg@nrc.gov>
PtftV fi_,(QOO '
Date:
6/28/04 2:15PM 0
0
Subject:
RE: Unit 2 tripIEDG 2A loss of voltage Tony:
Please pass along to Chuck Paulk, thank you.
- Regards, Don Straka Senior Consultant - Regulatory Affairs dstraka@apsc.com phone: 623.393.5041 pager: 602.509.6240 mobile: 602.509.6240
> -- Original Message-
> From:
Payne, W.Steven (Z99560)
> Sent:
Thursday, June 24, 2004 4:12 PM
> To: Straka, Donald J(Z99942)
> Cc: Steen, Douglas K(Z91197); Radspinner, Mark A(Z76778)
Subject:
Unit 2 trip/EDG 2A loss of voltage
> Don, per my conversation today with Doug Steen and yourself, the
> following is the status of the failed diode that caused EDG 2A to lose
> voltage subsequent to the Unit 2 trip last week.
> Last week, the NRC AIT inspector asked what was the run time of EDG 2A
> (implying what was the hours on the diode). I told him that the diesel
> had run 2325 hours0.0269 days <br />0.646 hours <br />0.00384 weeks <br />8.846625e-4 months <br /> (i.e. the diode was energized for 2325 hours0.0269 days <br />0.646 hours <br />0.00384 weeks <br />8.846625e-4 months <br />). This
> diode is on the installed spare bridge which was just switched to in
> 2R1 1. This diode was energized for only about 75 hours8.680556e-4 days <br />0.0208 hours <br />1.240079e-4 weeks <br />2.85375e-5 months <br /> (root cause not
> determined).
> Thanks,
> Steve Payne
> DG System Engineer
> telephone - 623-393-5157
> email address - wpayneOl@apsc.com CC:
<DKSTEEN@apsc.com>, <MRADSPIN@apsc.com>,
<WPAYNE01 @apsc.com>