LASALLE - FAULTY EMERGENCY SIREN ALARMED WITHOUT CAUSE FOR 90 MINUTES YESTERDAY

LASALLE - NOTIFICATION DATE: 07/01/2003

PRESS RELEASE DUE TO SIREN MALFUNCTION

The licensee provided the following information via facsimile:

"At approximately 0800 (CDT) on July 1, 2003, LaSalle County Station management decided to issue a press release related to a single malfunctioned warning siren. The warning siren had malfunctioned and erroneously operated for nearly 90 minutes early this morning. LaSalle County Generating Station will begin replacing the faulty warning siren's electronics today. The press release is tentatively expected to occur today at 1130 CDT. No other emergency notification systems or sirens malfunctioned.

"The siren, located in LaSalle County on East 25th Road approximately one-half mile west of the station, is currently out of service. It is expected to return to service on Wednesday July 2."

The licensee notified the NRC Resident Inspector.

+------------------------------------------------------------------------------+
|Power Reactor                                    |Event Number:   39971       |
+------------------------------------------------------------------------------+
+------------------------------------------------------------------------------+
| FACILITY: LASALLE                  REGION:  3  |NOTIFICATION DATE: 07/01/2003|
|    UNIT:  [1] [2] []                STATE:  IL |NOTIFICATION TIME: 12:13[EDT]|
|   RXTYPE: [1] GE-5,[2] GE-5                    |EVENT DATE:        07/01/2003|
+------------------------------------------------+EVENT TIME:        08:00[CDT]|
| NRC NOTIFIED BY:  JOHN WASHKO                  |LAST UPDATE DATE:  07/01/2003|
|  HQ OPS OFFICER:  BILL GOTT                    +-----------------------------+
+------------------------------------------------+PERSON          ORGANIZATION |
|EMERGENCY CLASS:          NON EMERGENCY         |BRENT CLAYTON        R3      |
|10 CFR SECTION:                                 |                             |
|APRE 50.72(b)(2)(xi)     OFFSITE NOTIFICATION   |                             |
|                                                |                             |
|                                                |                             |
|                                                |                             |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|UNIT |SCRAM CODE|RX CRIT|INIT PWR|   INIT RX MODE  |CURR PWR|  CURR RX MODE   |
+-----+----------+-------+--------+-----------------+--------+-----------------+
|1     N          Y       100      Power Operation  |100      Power Operation  |
|2     N          Y       100      Power Operation  |100      Power Operation  |
|                                                   |                          |
+------------------------------------------------------------------------------+