Event Notification Report for September 01, 2017
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
08/31/2017 - 09/01/2017
Power Reactor
Event Number: 52945
Facility: COMANCHE PEAK
Region: 4 State: TX
Unit: [] [2] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: SAM PEREZ
HQ OPS Officer: HOWIE CROUCH
Region: 4 State: TX
Unit: [] [2] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: SAM PEREZ
HQ OPS Officer: HOWIE CROUCH
Notification Date: 09/02/2017
Notification Time: 01:36 [ET]
Event Date: 09/01/2017
Event Time: 21:40 [CDT]
Last Update Date: 09/02/2017
Notification Time: 01:36 [ET]
Event Date: 09/01/2017
Event Time: 21:40 [CDT]
Last Update Date: 09/02/2017
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):
VINCENT GADDY (R4DO)
VINCENT GADDY (R4DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | M/R | Y | 100 | Power Operation | 0 | Hot Standby |
MANUAL REACTOR TRIP DUE TO TWO DROPPED RODS
"At time 2140 [CDT] on September 1, 2017, CPNPP [Comanche Peak Nuclear Power Plant] Unit 2 experienced two (2) dropped rods, one control, one shutdown. The reactor was then manually tripped.
"This event is being reported in accordance with 10CFR50.72(b)(2)(iv)(B) for reactor trip and 10CFR 50.72(b)(3)(iv)(A) for an actuation of auxiliary feedwater.
"Currently Unit 2 is being maintained in Hot Standby (Mode 3) in accordance with Integrated Plant Operating Procedure IP0-007B, Emergency Response Guideline Procedure Network has been exited. Decay Heat is being rejected to the Main Condenser via Steam Dump Valves (Turbine Bypass Valves).
"The NRC Resident Inspector has been notified."
All rods inserted into the core during the trip. No relief or safety valves actuated during the plant transient. The electrical grid is stable and supplying plant loads. Unit 1 was not affected by the transient.
"At time 2140 [CDT] on September 1, 2017, CPNPP [Comanche Peak Nuclear Power Plant] Unit 2 experienced two (2) dropped rods, one control, one shutdown. The reactor was then manually tripped.
"This event is being reported in accordance with 10CFR50.72(b)(2)(iv)(B) for reactor trip and 10CFR 50.72(b)(3)(iv)(A) for an actuation of auxiliary feedwater.
"Currently Unit 2 is being maintained in Hot Standby (Mode 3) in accordance with Integrated Plant Operating Procedure IP0-007B, Emergency Response Guideline Procedure Network has been exited. Decay Heat is being rejected to the Main Condenser via Steam Dump Valves (Turbine Bypass Valves).
"The NRC Resident Inspector has been notified."
All rods inserted into the core during the trip. No relief or safety valves actuated during the plant transient. The electrical grid is stable and supplying plant loads. Unit 1 was not affected by the transient.
Agreement State
Event Number: 53284
Rep Org: CALIFORNIA RADIATION CONTROL PRGM
Licensee: RADIOLOGY SUPPORT DEVICES, INC. aka RSD
Region: 4
City: LONG BEACH State: CA
County:
License #: 5311-19
Agreement: Y
Docket:
NRC Notified By: THOMAS MIKO
HQ OPS Officer: DONALD NORWOOD
Licensee: RADIOLOGY SUPPORT DEVICES, INC. aka RSD
Region: 4
City: LONG BEACH State: CA
County:
License #: 5311-19
Agreement: Y
Docket:
NRC Notified By: THOMAS MIKO
HQ OPS Officer: DONALD NORWOOD
Notification Date: 03/23/2018
Notification Time: 18:36 [ET]
Event Date: 09/01/2017
Event Time: 00:00 [PDT]
Last Update Date: 03/23/2018
Notification Time: 18:36 [ET]
Event Date: 09/01/2017
Event Time: 00:00 [PDT]
Last Update Date: 03/23/2018
Emergency Class: NON EMERGENCY
10 CFR Section:
AGREEMENT STATE
10 CFR Section:
AGREEMENT STATE
Person (Organization):
JEREMY GROOM (R4DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
JEREMY GROOM (R4DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
AGREEMENT STATE REPORT - LOST AM-241 SOURCE
The following information was received via E-mail:
"In a letter dated December 20, 2017, the President of Radiology Support Devices (RSD)/Alderson Phantoms reported to the Sacramento office of California Department of Health Services, Radiological Health Branch that 9 (nine) sealed sources were missing. The source activities varied from very low microCi quantities to less than picoCi quantities. It was not recognized that one source met the criteria for immediate reporting until a routine, scheduled inspection by Los Angeles County Radiation Management was performed of RSD.
"It was discovered on March 22, 2018 that eight of the nine sealed sources were below the 10 CFR 20 Table C reporting requirements, but one sealed source, 2.89 microCi of Am-241 (North American Scientific; calibration date January 1995, no serial number available) met the NRC 24 hour reportability threshold of 1.0 microCi.
"The licensee suspects the sources may have been taken by a previous employee. However, the previous employee has denied taking the sources."
California 5010 Number: 032218
Notified Mexican Government Representatives via E-mail.
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 information was received via E-mail:
"In a letter dated December 20, 2017, the President of Radiology Support Devices (RSD)/Alderson Phantoms reported to the Sacramento office of California Department of Health Services, Radiological Health Branch that 9 (nine) sealed sources were missing. The source activities varied from very low microCi quantities to less than picoCi quantities. It was not recognized that one source met the criteria for immediate reporting until a routine, scheduled inspection by Los Angeles County Radiation Management was performed of RSD.
"It was discovered on March 22, 2018 that eight of the nine sealed sources were below the 10 CFR 20 Table C reporting requirements, but one sealed source, 2.89 microCi of Am-241 (North American Scientific; calibration date January 1995, no serial number available) met the NRC 24 hour reportability threshold of 1.0 microCi.
"The licensee suspects the sources may have been taken by a previous employee. However, the previous employee has denied taking the sources."
California 5010 Number: 032218
Notified Mexican Government Representatives via E-mail.
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