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Event Notification Report for December 10, 2004

U.S. Nuclear Regulatory Commission Operations Center Event Reports For 12/09/2004 - 12/10/2004 ** EVENT NUMBERS ** 41248 41250 General Information or Other Event Number: 41248 Rep Org: CALIFORNIA RADIATION CONTROL PRGM Licensee: GEOCON, INC Region: 4 City: SAN DIEGO State: CA County: License #: 3924-37 Agreement: Y Docket: NRC Notified By: ROBERT GREGER, CHP HQ OPS Officer: BILL HUFFMAN Notification Date: 12/07/2004 Notification Time: 18:54 [ET] Event Date: 12/07/2004 Event Time: [PST] Last Update Date: 12/07/2004 Emergency Class: NON EMERGENCY 10 CFR Section: AGREEMENT STATE Person (Organization): LINDA SMITH (R4) JOE GIITTER (NMSS) CNSNS (MEXICO) (FAX) TAS VIA E-MAIL () Event Text AGREEMENT STATE REPORT FROM CALIFORNIA ON STOLEN TROXLER GAUGE "On December 7, 2004 at noon, the [Radiation Safety Officer] RSO contacted the [State of California Radiological Health Branch] Office to report a nuclear density gauge (Troxler model 3440, serial #15945) with a nominal 40 mCi Am:Be source (serial #47-11302) and a nominal 8 mCi Cs-137 source (serial #50-4969) had been stolen out of a locked construction trailer at Blossom Housing site off of Flynn Springs Road in the County of San Diego sometime between 11 am on Monday, December 6, 2004 and 7 am on December 7, 2004, when the theft was discovered. The gauge was last seen by the gauge user when he locked it up on Friday [12/03/04] at 3:30 pm in a trailer owned and used only by Geocon, Inc. A job foreman with another company reported he had noticed the trailer was locked shortly before he left the job site on Monday, December 6, 2004 at 11 am. Besides being inside the locked trailer, the case containing the gauge was locked with a padlock and the case was chained and locked to the trailer. The dead bolt lock on the trailer door had been drilled out and the gauge, gauge case, chain and lock, along with the door lock had been removed from the premises. A police report was filed with the San Diego County Sheriff's office (case #04084256A). "A reward will be offered for the return of the nuclear gauge. "The FBI was apparently informed of the theft by the San Diego Sheriff's office, as the licensee reported receiving a call from the FBI." The California report number for this event is 120704. Power Reactor Event Number: 41250 Facility: DIABLO CANYON Region: 4 State: CA Unit: [ ] [2] [ ] RX Type: [1] W-4-LP,[2] W-4-LP NRC Notified By: SUSAN WESTCOTT HQ OPS Officer: STEVE SANDIN Notification Date: 12/09/2004 Notification Time: 07:48 [ET] Event Date: 12/09/2004 Event Time: 02:04 [PST] Last Update Date: 12/09/2004 Emergency Class: NON EMERGENCY 10 CFR Section: 50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION Person (Organization): LINDA SMITH (R4) Unit SCRAM Code RX CRIT Initial PWR Initial RX Mode Current PWR Current RX Mode 2 N N 0 Hot Standby 0 Hot Standby Event Text RPS ACTUATION WHILE SHUTDOWN DUE TO FAILED FUSE "During performance of Surveillance Testing on Intermediate Range Nuclear detector, a control power fuse blew. The plant was in Mode 3, and received a Reactor Trip signal which opened the Reactor Trip Breakers. All rods were on the bottom prior to the trip signal. Testing of Intermediate Range. Detectors has been suspended pending investigation. The plant remains in Mode 3." The licensee will inform the NRC resident inspector.

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