ML042960415

E-mail from G. Michael, APSC, to Mel Fields and Troy Pruett, NRC, Materials for APS Offsite Power Discussion

ML042960415
Person / Time
Site:	Palo Verde
Issue date:	06/17/2004
From:	Michael G Arizona Public Service Co
To:	Fields M, Troy Pruett NRC Region 4
References
FOIA/PA-2004-0307
Download: ML042960415 (3)

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.S From: <GMICHAEL@apsc.com>

To: <mbf1@nrc.gov>, dtwp nrc.gov>

Date: 6/17104 1:58PM

Subject:

RE: Materials for APS Offsite Power Discussion Attached is the voltage diagram we are discussing in the phone call.

Glenn Michael Palo Verde P%23-393-5750.-

> <<525 KV VOLTAGE.pdf>>>

CC: <TWEBER01 @apsc.com>, <DGREGOIR apsc.com>

p1~

From: <JPROCTOR@apsc.com>

To: <mbf1 @nrc.gov>, <nis~nrc.gov>, <twp~nrc.gov>

Date: 6/17/04 8:23PM

Subject:

Additional PVNGS Information Mel, c

\ Right after I sent you the previous letter, some additional review of data shows that there is a possibility of the negative sequence" relays for all three PVNGS units may have starting timing.

Will continue to investigate this item further and will provide additional information and updates as available. If-you have any questions please let myself or Tom Weber know.

James Proctor PVNGS - Licensing 623-393-5730 CC: <TWEBER01 @apsc.com>, <GMICHAEL@apsc.com>, <JLEVINE@ apsc.com>,

<DSMITH1 0I apsc.com>, <DMAULDIN @apsc.com>

June 14, 2004 Event Palo Verde Switchyard Voltage 600 All three Palo Verde to Hassayampa r 525 kV tie lines tripped

.i I 500-

" 400 CD 300

>300

> 200 100 0

0 5 10 15 20 25 30 Elapsed Time (sec)

S , .S