Event Notification Report for February 02, 2008
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
02/01/2008 - 02/02/2008
Power Reactor
Event Number: 43956
Facility: COOK
Region: 3 State: MI
Unit: [1] [] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: RICH KRESS
HQ OPS Officer: JASON KOZAL
Region: 3 State: MI
Unit: [1] [] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: RICH KRESS
HQ OPS Officer: JASON KOZAL
Notification Date: 02/02/2008
Notification Time: 07:44 [ET]
Event Date: 02/02/2008
Event Time: 05:30 [EST]
Last Update Date: 02/02/2008
Notification Time: 07:44 [ET]
Event Date: 02/02/2008
Event Time: 05:30 [EST]
Last Update Date: 02/02/2008
Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(2)(iv)(B) - RPS ACTUATION - CRITICAL 50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION
10 CFR Section:
50.72(b)(2)(iv)(B) - RPS ACTUATION - CRITICAL 50.72(b)(3)(iv)(A) - VALID SPECIF SYS ACTUATION
Person (Organization):
CHRISTINE LIPA (R3)
CHRISTINE LIPA (R3)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | M/R | Y | 93 | Power Operation | 0 | Hot Standby |
MANUAL REACTOR TRIP DUE TO HIGH TURBINE VIBRATIONS
"The DC Cook Unit 1 Reactor was manually tripped from 93% power due to high vibrations on main turbine bearings #5 and 6.
"This event is reportable under 10CFR50.72(b)(2)(iv)(B), RPS actuation, as a four (4) hour report and under 10CFR50.72(b)(3)(iv)(A), specified system actuation of the Auxiliary Feedwater System, as an eight (8) hour report.
"Preliminary evaluation indicates all plant systems functioned normally following the Reactor Trip. DC Cook Unit 1 remains stable in Mode 3 while conducting the post Trip Review. No radioactive release is in progress as a result of this event.
"The DC Cook Resident NRC Inspector was notified 02/02/08 at approximately 0535 EST.
"The electrical grid is stable and Unit 1 is being supplied by offsite power. Unit 2 is not affected. All control rods fully inserted. Decay heat is being removed via steam dumps to the main condenser."
"The DC Cook Unit 1 Reactor was manually tripped from 93% power due to high vibrations on main turbine bearings #5 and 6.
"This event is reportable under 10CFR50.72(b)(2)(iv)(B), RPS actuation, as a four (4) hour report and under 10CFR50.72(b)(3)(iv)(A), specified system actuation of the Auxiliary Feedwater System, as an eight (8) hour report.
"Preliminary evaluation indicates all plant systems functioned normally following the Reactor Trip. DC Cook Unit 1 remains stable in Mode 3 while conducting the post Trip Review. No radioactive release is in progress as a result of this event.
"The DC Cook Resident NRC Inspector was notified 02/02/08 at approximately 0535 EST.
"The electrical grid is stable and Unit 1 is being supplied by offsite power. Unit 2 is not affected. All control rods fully inserted. Decay heat is being removed via steam dumps to the main condenser."
General Information or Other
Event Number: 43975
Rep Org: CALIFORNIA RADIATION CONTROL PRGM
Licensee: CONAM INSPECTION & ENGINEERING SERVICES
Region: 4
City: SIGNAL HILL State: CA
County:
License #: 4832-19
Agreement: Y
Docket:
NRC Notified By: ROBERT GREGER
HQ OPS Officer: STEVE SANDIN
Licensee: CONAM INSPECTION & ENGINEERING SERVICES
Region: 4
City: SIGNAL HILL State: CA
County:
License #: 4832-19
Agreement: Y
Docket:
NRC Notified By: ROBERT GREGER
HQ OPS Officer: STEVE SANDIN
Notification Date: 02/09/2008
Notification Time: 22:23 [ET]
Event Date: 02/02/2008
Event Time: 09:00 [PST]
Last Update Date: 02/09/2008
Notification Time: 22:23 [ET]
Event Date: 02/02/2008
Event Time: 09:00 [PST]
Last Update Date: 02/09/2008
Emergency Class: NON EMERGENCY
10 CFR Section:
10 CFR Section:
Person (Organization):
MICHAEL SHANNON (R4)
ANDREW PERSINKO (FSME)
MICHAEL SHANNON (R4)
ANDREW PERSINKO (FSME)
AGREEMENT STATE REPORT INVOLVING FAILURE OF RADIOGRAPHY CAMERA TO LOCK SOURCE IN THE SHIELDED POSITION
The following information was received via email:
"On Saturday, February 2, 2008, at approximately 9:00 A.M., a CONAM radiographer was performing radiography at Conoco Phillips in Signal Hill, CA, when he found he was unable to lock the device after retracting the source to the fully shielded position. The source was fully shielded throughout the incident, and remained under the constant surveillance of the radiographer. The Assistant RSO arrived on site at approximately 10:00 am, determined there was dirt in the locking [pin] that prevented it from popping up. He cleaned the dirt, and the locking [pin] engaged, locking the source in place. The device was transported back to the licensee's laboratory, tagged as out of service, and will be sent to INC for inspection and maintenance. The device involved is an INC IR 100 camera (S/N 4160), containing 80 Ci of Ir-192. There were no significant exposures from this event. RHB will follow up with the licensee to determine the root cause of the event, and any necessary corrective actions."
The following information was received via email:
"On Saturday, February 2, 2008, at approximately 9:00 A.M., a CONAM radiographer was performing radiography at Conoco Phillips in Signal Hill, CA, when he found he was unable to lock the device after retracting the source to the fully shielded position. The source was fully shielded throughout the incident, and remained under the constant surveillance of the radiographer. The Assistant RSO arrived on site at approximately 10:00 am, determined there was dirt in the locking [pin] that prevented it from popping up. He cleaned the dirt, and the locking [pin] engaged, locking the source in place. The device was transported back to the licensee's laboratory, tagged as out of service, and will be sent to INC for inspection and maintenance. The device involved is an INC IR 100 camera (S/N 4160), containing 80 Ci of Ir-192. There were no significant exposures from this event. RHB will follow up with the licensee to determine the root cause of the event, and any necessary corrective actions."