United States Nuclear Regulatory Commission - Protecting People and the Environment
Home > NRC Library > Document Collections > Reports Associated with Events > Event Notification Reports > 2010 > August 19

Event Notification Report for August 19, 2010

U.S. Nuclear Regulatory Commission
Operations Center

Event Reports For
08/18/2010 - 08/19/2010

** EVENT NUMBERS **


46172 46188

To top of page
General Information or Other Event Number: 46172
Rep Org: TEXAS DEPARTMENT OF HEALTH
Licensee: ALBEMARLE CATALYSTS LP
Region: 4
City: PASADENA State: TX
County:
License #: TX - 01743
Agreement: Y
Docket:
NRC Notified By: ART TUCKER
HQ OPS Officer: BILL HUFFMAN
Notification Date: 08/13/2010
Notification Time: 10:40 [ET]
Event Date: 07/16/2010
Event Time: [CDT]
Last Update Date: 08/13/2010
Emergency Class: NON EMERGENCY
10 CFR Section:
AGREEMENT STATE
Person (Organization):
ANGELA MCINTOSH (FSME)
NEIL OKEEFE (R4DO)

Event Text

AGREEMENT STATE REPORT- TEXAS - STUCK OPEN SHUTTER ON A PROCESS GAUGE

The following report was received via e-mail from the State of Texas Department of State Health Services Radiation Branch:

"On August 13, 2010, the Agency [Texas Department of Health] was notified by the licensee that on July 16, 2010 they discovered that the shutter on a TN Technologies Model 5205 nuclear gauge containing 100 millicuries (original activity) of Cesium (Cs) - 137 was inoperable. The gauge shutter was stuck in the open position, which is the normal operating position. There was no additional exposure risk to any individual due to the failure. The licensee discontinued the use of the gauge and contacted the manufacturer to schedule the repair of the gauge shutter. On July 29, 2010, the manufacturer's technician arrived at the plant to repair the gauge. The technician found a build up of corrosion had occurred preventing the gauge shutter from operating properly. The technician advised the licensee that the gauge and source should be replaced due to the corrosion.

"The gauge was removed from the vessel on July 29, 2010. The technician secured shielding over the source. No significant exposures were received during the source/gauge removal. A leak test of the source was conducted and the results were below the limit. The licensee is making arrangements to dispose of the source and gauge. Additional information will be provided as it is received in accordance with SA 300."

Texas Incident #: I - 8771

To top of page
Power Reactor Event Number: 46188
Facility: PALO VERDE
Region: 4 State: AZ
Unit: [1] [2] [3]
RX Type: [1] CE,[2] CE,[3] CE
NRC Notified By: DELBERT ELKINTON
HQ OPS Officer: JOHN KNOKE
Notification Date: 08/18/2010
Notification Time: 16:30 [ET]
Event Date: 08/18/2010
Event Time: 07:42 [MST]
Last Update Date: 08/18/2010
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
Person (Organization):
GEOFFREY MILLER (R4DO)

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
3 N Y 100 Power Operation 100 Power Operation

Event Text

LOSS OF SEVERAL PUBLIC WARNING SYSTEM SIRENS

"On August 18, 2010, at approximately 0742 Mountain Standard Time (MST), the Palo Verde Emergency Preparedness Department discovered that public warning system sirens Nos. 17, 23, and 34 were not responding, and therefore, were out of service. The loss of these sirens could potentially impact a population of approximately 1800 people in the 5-mile emergency planning zone (EPZ). Since the loss of these sirens could impair Arizona Public Service Company's ability to inform greater than 5% of the population within the EPZ, this notification is being made in accordance with 10 CFR 50.72(b)(3)(xiii). If an event occurs while the sirens are out of service, the Palo Verde Emergency Plan has a contingency for dispatching Maricopa County Sheriff's Office (MCSO) vehicles with loud speakers to alert persons within the affected area. The MCSO is prepared to implement this contingency should it become necessary. Troubleshooting to determine the cause of the failure has commenced.

"The NRC Resident Inspector has been notified of the out of service sirens and this ENS call.

"[At the time of the notification to the NRC], siren #23 was restored at 1316 MST. The out of service sirens are now Nos. 17 and 34 with an affected population of 1196 within the 5 mile EPZ."

Page Last Reviewed/Updated Thursday, March 29, 2012
Thursday, March 29, 2012