ML20237K000
| ML20237K000 | |
| Person / Time | |
|---|---|
| Site: | Palo Verde  |
| Issue date: | 06/30/1987 |
| From: | Haynes J, Hull J ARIZONA PUBLIC SERVICE CO. (FORMERLY ARIZONA NUCLEAR |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| 192-00260-JGH-T, 192-260-JGH-T, NUDOCS 8708190050 | |
| Download: ML20237K000 (2) | |
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SUMMARY
OF OPERATING EXPERIENCE FOR THE MONTH DOCKET NO.
59-52@_______
UNIT PVNGS-1______
DATE 97/99/@7_____
COMPLETED BY J.L._ Hull ____
TELEPHONE
@g2-393-2@79_
June _1gg7 l
06/01 0054 Synchronized Main Turbine to Grid 06/01 1255 Reactor Power at 40N 06/02 1818 Reactor Power at 70%
06/03 0347 Reactor Power at 100%
06/26 2035 Reactor power reduced to 80% due to scheduled testing 06/28 1700 Reactor Power at 1004 06/28 1957 Following a power reduction for CEA/CEAC testing a ma]or pipe rupture occurred on the circulating water system.
Subsequent review has determined that the root cause of the event, circulating water line rupture, was that condenser circulating water outlet valve CWN-HV-10 failed closed - Entered Mode 3.
06/29 2327 Entered Mode 4.
8708190050 870630 l
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Arizona Nuclear Power Project i
P.O. BOX $2034 e PHOENIX, ARIZONA 85072-2034 192-00260-JGH/TRB August 13, 1987 I
I NRC Document Control Desk U.S. Nuclear Regulatory Commission Washington, D. C. 20555
Subject:
Palo Verde Nuclear Generating Station (PVNGS)
Unit 1 Docket No. STN 50-528 License No. NPF-41 June Monthly Operating Report File:
87-024-404
Dear Sirs:
(
Attached please find an amended copy of the " Summary of Operating Experience for j
the Month" page for "Jnit 1.
The date and time when the Unit entered Mode 4 have i
been entered.
If you have any questions, please contact me.
Very tru y yours,
$4 gg---
J. G. Ha nes Vice President Nuclear Production JGil/TRB/cid cc:
- 0. M. DeMichele (all w/a)
E. E. Van Brunt, Jr.
J. B. Martin E. A. Licitra A. C. Gehr J. A. Amenta IUP0 Records Center d'o ih l