Event Notification Report for December 25, 2014
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
12/24/2014 - 12/25/2014
Power Reactor
Event Number: 50704
Facility: RIVER BEND
Region: 4 State: LA
Unit: [1] [] []
RX Type: [1] GE-6
NRC Notified By: DANIEL PIPKIN
HQ OPS Officer: DANIEL MILLS
Region: 4 State: LA
Unit: [1] [] []
RX Type: [1] GE-6
NRC Notified By: DANIEL PIPKIN
HQ OPS Officer: DANIEL MILLS
Notification Date: 12/25/2014
Notification Time: 12:41 [ET]
Event Date: 12/25/2014
Event Time: 08:37 [CST]
Last Update Date: 12/25/2014
Notification Time: 12:41 [ET]
Event Date: 12/25/2014
Event Time: 08:37 [CST]
Last Update Date: 12/25/2014
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):
THOMAS FARNHOLTZ (R4DO)
THOMAS FARNHOLTZ (R4DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 1 | A/R | Y | 85 | Power Operation | 0 | Hot Shutdown |
AUTOMATIC REACTOR SCRAM
"At 0837 [CST] on 12/25/14, a loss of Reactor Protection System (RPS) 'B' occurred which resulted in a Division 2 RPS half SCRAM. This occurred concurrent with a Division 1 RPS half SCRAM which had been inserted for LCO 3.3.1.1 Action 'A' due to issues with the #2 turbine control valve RPS logic on 12/23/14. This resulted in a full RPS actuation and Reactor SCRAM. During the SCRAM, a reactor water Level '8' occurred which tripped the running reactor feed pump. Reactor water level peaked at 56 inches. This Level '8' is under investigation. Once reactor water level lowered below 51 inches the Level '8' signal was reset, and the team attempted to start the 'C' reactor feed water pump.
"The 'C' reactor feed pump failed to start upon attempt. The 'A' reactor feed pump was then started successfully. The startup feed regulating valve failed to open in automatic or manual mode, resulting in an RPV Level '3' signal (lowering to 8.1 inches). The operators manually aligned the 'C' feed water regulating valve and restored reactor water level to normal band. The plant is stable in Mode 3 pending investigation."
The licensee notified the NRC Resident Inspector.
"At 0837 [CST] on 12/25/14, a loss of Reactor Protection System (RPS) 'B' occurred which resulted in a Division 2 RPS half SCRAM. This occurred concurrent with a Division 1 RPS half SCRAM which had been inserted for LCO 3.3.1.1 Action 'A' due to issues with the #2 turbine control valve RPS logic on 12/23/14. This resulted in a full RPS actuation and Reactor SCRAM. During the SCRAM, a reactor water Level '8' occurred which tripped the running reactor feed pump. Reactor water level peaked at 56 inches. This Level '8' is under investigation. Once reactor water level lowered below 51 inches the Level '8' signal was reset, and the team attempted to start the 'C' reactor feed water pump.
"The 'C' reactor feed pump failed to start upon attempt. The 'A' reactor feed pump was then started successfully. The startup feed regulating valve failed to open in automatic or manual mode, resulting in an RPV Level '3' signal (lowering to 8.1 inches). The operators manually aligned the 'C' feed water regulating valve and restored reactor water level to normal band. The plant is stable in Mode 3 pending investigation."
The licensee notified the NRC Resident Inspector.
Agreement State
Event Number: 50710
Rep Org: CALIFORNIA RADIATION CONTROL PRGM
Licensee: BAY AREA GEOTECHNICAL GROUP
Region: 4
City: SUNNYVALE State: CA
County:
License #: 1625-43
Agreement: Y
Docket:
NRC Notified By: KENT PRENDERGAST
HQ OPS Officer: DANIEL MILLS
Licensee: BAY AREA GEOTECHNICAL GROUP
Region: 4
City: SUNNYVALE State: CA
County:
License #: 1625-43
Agreement: Y
Docket:
NRC Notified By: KENT PRENDERGAST
HQ OPS Officer: DANIEL MILLS
Notification Date: 12/30/2014
Notification Time: 16:04 [ET]
Event Date: 12/25/2014
Event Time: 00:00 [PDT]
Last Update Date: 12/30/2014
Notification Time: 16:04 [ET]
Event Date: 12/25/2014
Event Time: 00:00 [PDT]
Last Update Date: 12/30/2014
Emergency Class: NON EMERGENCY
10 CFR Section:
10 CFR Section:
Person (Organization):
MICHAEL HAY (R4DO)
NMSS EVENTS NOTIFICA (EMAI)
MEXICO (FAX)
MICHAEL HAY (R4DO)
NMSS EVENTS NOTIFICA (EMAI)
MEXICO (FAX)
AGREEMENT STATE REPORT - STOLEN MOISTURE DENSITY GAUGE
The following was received from the State of California via email:
"A CPN Portable gauge containing 10 mCi of Cesium 137 and 50 mCi of Americium 241 was stolen from the technician's residence [Campbell, CA] on December 25, 2014. According to the RSO [Radiation Safety Officer], a police report was filed on December 25th and RHB [California Radiologic Health Branch] was notified on December 26, 2014.
"RHB North was notified of this theft on December 30, 2014 at 1300 PST. The RSO was requested to provide a reward in the local paper and on Craigslist and to provide RHB North a copy of the Police Report and description of the circumstances as soon as possible, as the RSO was not in the office and did not have access to the pertinent information.
"Additional information will be forwarded when it is received"
THIS MATERIAL EVENT CONTAINS A "LESS THAN CAT 3" LEVEL OF RADIOACTIVE MATERIAL
Sources that are "Less than IAEA Category 3 sources," are either sources that are very unlikely to cause permanent injury to individuals or contain a very small amount of radioactive material that would not cause any permanent injury. Some of these sources, such as moisture density gauges or thickness gauges that are Category 4, the amount of unshielded radioactive material, if not safely managed or securely protected, could possibly - although it is unlikely - temporarily injure someone who handled it or were otherwise in contact with it, or who were close to it for a period of many weeks. For additional information go to http://www-pub.iaea.org/MTCD/publications/PDF/Pub1227_web.pdf
The following was received from the State of California via email:
"A CPN Portable gauge containing 10 mCi of Cesium 137 and 50 mCi of Americium 241 was stolen from the technician's residence [Campbell, CA] on December 25, 2014. According to the RSO [Radiation Safety Officer], a police report was filed on December 25th and RHB [California Radiologic Health Branch] was notified on December 26, 2014.
"RHB North was notified of this theft on December 30, 2014 at 1300 PST. The RSO was requested to provide a reward in the local paper and on Craigslist and to provide RHB North a copy of the Police Report and description of the circumstances as soon as possible, as the RSO was not in the office and did not have access to the pertinent information.
"Additional information will be forwarded when it is received"
THIS MATERIAL EVENT CONTAINS A "LESS THAN CAT 3" LEVEL OF RADIOACTIVE MATERIAL
Sources that are "Less than IAEA Category 3 sources," are either sources that are very unlikely to cause permanent injury to individuals or contain a very small amount of radioactive material that would not cause any permanent injury. Some of these sources, such as moisture density gauges or thickness gauges that are Category 4, the amount of unshielded radioactive material, if not safely managed or securely protected, could possibly - although it is unlikely - temporarily injure someone who handled it or were otherwise in contact with it, or who were close to it for a period of many weeks. For additional information go to http://www-pub.iaea.org/MTCD/publications/PDF/Pub1227_web.pdf