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Event Notification Report for September 29, 2004

U.S. Nuclear Regulatory Commission
Operations Center

Event Reports For
09/28/2004 - 09/29/2004

** EVENT NUMBERS **

Power Reactor	Event Number: 41076
Facility: DIABLO CANYON Region: 4 State: CA Unit: [1] [2] [ ] RX Type: [1] W-4-LP,[2] W-4-LP NRC Notified By: TONY CHITWOOD HQ OPS Officer: BILL GOTT	Notification Date: 09/28/2004 Notification Time: 13:44 [ET] Event Date: 09/28/2004 Event Time: 10:30 [PDT] Last Update Date: 09/29/2004
Emergency Class: UNUSUAL EVENT 10 CFR Section: 50.72(a) (1) (i) - EMERGENCY DECLARED	Person (Organization): LINDA HOWELL (R4) SUZANNE BLACK (NRR) SUSAN FRANT (IRD) JUNE PAULEY (DHS) BOB CAULDWELL (FEMA) STEVE BAILEY (DOE)

Unit	SCRAM Code	RX CRIT	Initial PWR	Initial RX Mode	Current PWR	Current RX Mode
1	N	Y	100	Power Operation	100	Power Operation
2	N	Y	100	Power Operation	100	Power Operation

Event Text

UNUSUAL EVENT DECLARED DUE TO SEISMIC ACTIVITY

"Earthquake felt at plant site [at 1015 PDT] registering 0.012 g. No damage on plant site noted. Release to the environment remains within normal operating levels, and effluent radiation monitors did not alarm. No protective action required."

The Licensee notified the NRC Resident Inspector.

* * * UPDATE FROM T. CHITWOOD TO W. GOTT AT 1428 EDT ON 09/28/04 * * *

"Plant walk down in progress. No damage noted." The Licensee notified the NRC Resident Inspector.

* * * UPDATE FROM GLENN COELZER TO MACKINNON AT 2132 EDT ON 09/28/04

Information Call: No plant damage detected by walkdowns or equipment testing. R4DO (Linda Howell) notified.

The Licensee will notify the NRC Resident Inspector.

* * * UPDATE FROM JEFF KNISLEY TO CROUCH AT 0313 EDT ON 09/29/04 * * *

Information Call: No plant damage detected by walkdowns or equipment testing.

The licensee notified the NRC Resident Inspector. R4DO(Howell) will be notified.

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