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Event Notification Report for August 9, 2006

U.S. Nuclear Regulatory Commission
Operations Center

Event Reports For
08/08/2006 - 08/09/2006

** EVENT NUMBERS **


42740 42753 42755 42757

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Power Reactor Event Number: 42740
Facility: MONTICELLO
Region: 3 State: MN
Unit: [1] [ ] [ ]
RX Type: [1] GE-3
NRC Notified By: CHET DEMARAIS
HQ OPS Officer: JASON KOZAL
Notification Date: 07/31/2006
Notification Time: 00:11 [ET]
Event Date: 07/30/2006
Event Time: 17:30 [CDT]
Last Update Date: 08/08/2006
Emergency Class: NON EMERGENCY
10 CFR Section:
50.73(a)(1) - INVALID SPECIF SYSTEM ACTUATION
Person (Organization):
ANNE MARIE STONE (R3)

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

Event Text

SECONDARY CONTAINMENT ISOLATION DUE TO 'B' SPENT FUEL RAD MONITOR FAILURE

"At 1730 on 7/30/06 the 'B' Spent Fuel Pool Radiation Monitor spiked high, which resulted in the closure of the DW CAM (Continuous Air Monitor) and the Oxygen analyzer primary containment isolation valves. The spikes (2) of approximately 50 Mr/hour occurred during this event. Only 1 automatic isolation occurred. The Spent Fuel Pool Radiation Monitor High Rad signal also resulted in a Reactor Bldg Isolation (Secondary Containment), start of 'A' Standby Gas Treatment, and transfer of the Control Room Ventilation to the High Rad Mode. The 'A' Spent Fuel Pool Monitor remained constant at its background radiation level. No activities were in progress on the Refuel Floor at the time of the trips. Rad Protection Tech surveyed the area with no abnormal readings noted. The 'B' Spent Fuel Pool Radiation Monitor was declared inoperable. All automatic isolation valves have been reset, Rx Bldg Ventilation, Control Room Ventilation have been reset and SBGT (Standby Gas Treatment) has been secured. Normal trip setpoint is 50 Mr/ hour."

The licensee has taken the actions of LCO 3.2.E

The licensee notified the NRC Resident Inspector.

* * * UPDATE FROM R. SCHREIFELS TO W. GOTT AT 1544 ON 8/8/06 * * *

"This report is being reclassified from a 50.72(b)(3)(iv)(A) (valid system actuation) to 50.73(a)(2)(iv)(A) (invalid system actuation).

"Based on further investigation, Monticello has determined that the actuation signal was due to a failed micro switch and therefore was not a valid signal. Because the actuation signal was not valid, Monticello is reclassifying the initial event report as an unplanned system actuation under 50.73(a)(2)(iv)(A). This report will be made in lieu of reporting the event as an LER.

"In accordance with 50.73(a)(2)(iv)(A):

'"This report is not considered an LER and the report is being made under 50.73(a)(2)(iv)(A). The original event report (EN #42740) [see above] detailed the systems affected, whether the actuation was complete or partial, and whether each affected system started and functioned successfully.

"The cause of the invalid signal was the failure of the trip check pushbutton micro switch due to age related degradation. The switch has been replaced, and the 'B' Spent Fuel Pool Radiation Monitor was returned to service.

"The licensee has notified the NRC Resident Inspector."

Notified R3DO T. Kozak.

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General Information or Other Event Number: 42753
Rep Org: SC DIV OF HEALTH & ENV CONTROL
Licensee: QORE, INC.
Region: 1
City: MAULDIN State: SC
County:
License #: 338
Agreement: Y
Docket:
NRC Notified By: MELINDA BRADSHAW
HQ OPS Officer: BILL HUFFMAN
Notification Date: 08/04/2006
Notification Time: 09:43 [ET]
Event Date: 08/03/2006
Event Time: 10:00 [EDT]
Last Update Date: 08/06/2006
Emergency Class: NON EMERGENCY
10 CFR Section:
AGREEMENT STATE
Person (Organization):
PAT FINNEY (R1)
LARRY CAMPER (NMSS)

Event Text

AGREEMENT STATE REPORT FROM SOUTH CAROLINA ON DAMAGED MOISTURE DENSITY GAUGE

The State provided the following information via email:

"The SC Department of Health and Environmental Control was notified on Thursday, August 3, 2006, at 10:00 a.m., that a Humboldt Scientific Model 5001 portable moisture density gauge had been damaged on a job site in Mauldin, South Carolina. The gauge contained 11 millicuries maximum of Cesium 137 and 44 millicuries maximum of Americium 241:Be. [The licensee's representative] with QORE, Inc, made the report. The gauge was reportedly run over by a bulldozer while in use on the job site. [The licensee's representative] was present at the job site at the time of the event. [The licensee's representative] informed SC DHEC that the area had been roped off with both the gauge in its original position and the bulldozer inside the contained area. No individual had approached the gauge following the incident. [The licensee's representative] was advised to maintain surveillance of the device until DHEC personnel could respond. Once on site, DHEC personnel determined there was no release of material and no contamination of the bulldozer, the personnel involved or the roped area. The source was able to be retracted into the shielded position and the gauge placed in its transport container. The licensee secured the container in a locked storage box until disposition by the manufacturer could be accomplished. Departmental investigation is ongoing and updates will be made through the national NMED system."

SC Report No.: SC060010

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Power Reactor Event Number: 42755
Facility: VERMONT YANKEE
Region: 1 State: VT
Unit: [1] [ ] [ ]
RX Type: [1] GE-4
NRC Notified By: MICHEAL PLETCHER
HQ OPS Officer: JEFF ROTTON
Notification Date: 08/08/2006
Notification Time: 17:40 [ET]
Event Date: 08/08/2006
Event Time: 16:45 [EDT]
Last Update Date: 08/08/2006
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(xiii) - LOSS COMM/ASMT/RESPONSE
Person (Organization):
JOHN CARUSO (R1)

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

Event Text

LOSS OF EMERGENCY RESPONSE RADIO ALERT SYSTEM TRANSMITTER

Licensee has experienced a loss of emergency response capability due to loss of the Ames Hill NOAA transmitter. This transmitter is used to transmit information to the radio alert system (weather alert) for the site. Contract vendor has been contacted for troubleshooting and repair and is enroute to investigate the problem. The site has the ability to use the local radio stations if necessary.

The licensee has notified the NRC Resident Inspector. The licensee will be notifying the VT, NH, and MA State Police, the VT Department of Public Service, and the VT Emergency Management Office.

* * * UPDATE FROM J. BROOKS TO W. GOTT AT 1905 ON 08/08/06 * * *

At 1840, Vermont Yankee was notified that the Ames Hill NOAA transmitter was operational. The cause of the failure was due to a possible lightning strike.

The licensee notified the NRC Resident Inspector. The licensee will be notifying the VT, NH, and MA State Police, the VT Department of Public Service, and the VT Emergency Management Office.

Notified R1DO (J Caruso).

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Power Reactor Event Number: 42757
Facility: SOUTH TEXAS
Region: 4 State: TX
Unit: [1] [2] [ ]
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: WAYNE HARRISON
HQ OPS Officer: JEFF ROTTON
Notification Date: 08/08/2006
Notification Time: 18:39 [ET]
Event Date: 08/08/2006
Event Time: 15:43 [CDT]
Last Update Date: 08/08/2006
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(xi) - OFFSITE NOTIFICATION
Person (Organization):
RUSSELL BYWATER (R4)

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

INADVERTENT EMERGENCY NOTIFICATION SIREN ACTIVATION

"At approximately 15:43 [CDT] on 8/8/2006, all STP Emergency Notification System (ENS) sirens inadvertently/spuriously activated. The sirens automatically secured after approximately 3 minutes. All sirens except one at El Maton have subsequently been polled operable. STPNOC is investigating the cause of the activation.

"STPNOC has notified Matagorda County Sheriff Department and radio station KZRC. Inquiries from the public have been received.

"This notification is being made under 10CFR50.72(b)(2)(xi) as an event where other government agencies were notified."

The licensee notified the NRC Resident Inspector.

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