Event Notification Report for August 23, 2016
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
08/22/2016 - 08/23/2016
Agreement State
Event Number: 52197
Rep Org: CALIFORNIA RADIATION CONTROL PRGM
Licensee: AT&T
Region: 4
City: VALLEJO State: CA
County:
License #:
Agreement: Y
Docket:
NRC Notified By: K. ARUNIKA HEWADIKARAM
HQ OPS Officer: JEFF HERRERA
Licensee: AT&T
Region: 4
City: VALLEJO State: CA
County:
License #:
Agreement: Y
Docket:
NRC Notified By: K. ARUNIKA HEWADIKARAM
HQ OPS Officer: JEFF HERRERA
Notification Date: 08/24/2016
Notification Time: 15:47 [ET]
Event Date: 08/23/2016
Event Time: 00:00 [PDT]
Last Update Date: 08/24/2016
Notification Time: 15:47 [ET]
Event Date: 08/23/2016
Event Time: 00:00 [PDT]
Last Update Date: 08/24/2016
Emergency Class: NON EMERGENCY
10 CFR Section:
10 CFR Section:
Person (Organization):
RAY KELLAR (R4DO)
NMSS_EVENTS_NOTIFIC (EMAI)
RAY KELLAR (R4DO)
NMSS_EVENTS_NOTIFIC (EMAI)
AGREEMENT STATE REPORT - LOST TRITIUM EXIT SIGNS
The following report was received from the California Department of Public Health via email:
"On August 23, 2016, NRC [Nuclear Regulatory Commission] contacted RHB [California Radiation Health Branch] to inform of an incident involving missing Tritium signs. According to NRC report, the AT&T EH&S RSO [Environmental Health and Safety Radiation Safety Officer], Kim Kantner, contacted NRC to report six missing H-3 [Tritium] signs from one of their locations at 730 Carolina Street, Vallejo, CA. Each sign contained 2.7 Ci of H-3.
"These six signs were in a box to be returned to the vendor, stored inside a locked basement at the Vallejo AT&T facility. Some renovations were going on at this site. According to Kim, AT&T still believes that the box may have been misplaced by the workers. The investigation is still ongoing.
"RHB will be following up on this matter."
CA 5010 Number: 082316
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 report was received from the California Department of Public Health via email:
"On August 23, 2016, NRC [Nuclear Regulatory Commission] contacted RHB [California Radiation Health Branch] to inform of an incident involving missing Tritium signs. According to NRC report, the AT&T EH&S RSO [Environmental Health and Safety Radiation Safety Officer], Kim Kantner, contacted NRC to report six missing H-3 [Tritium] signs from one of their locations at 730 Carolina Street, Vallejo, CA. Each sign contained 2.7 Ci of H-3.
"These six signs were in a box to be returned to the vendor, stored inside a locked basement at the Vallejo AT&T facility. Some renovations were going on at this site. According to Kim, AT&T still believes that the box may have been misplaced by the workers. The investigation is still ongoing.
"RHB will be following up on this matter."
CA 5010 Number: 082316
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
Power Reactor
Event Number: 52194
Facility: WATTS BAR
Region: 2 State: TN
Unit: [] [2] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: DAVID ALLEN
HQ OPS Officer: JEFF HERRERA
Region: 2 State: TN
Unit: [] [2] []
RX Type: [1] W-4-LP,[2] W-4-LP
NRC Notified By: DAVID ALLEN
HQ OPS Officer: JEFF HERRERA
Notification Date: 08/23/2016
Notification Time: 15:30 [ET]
Event Date: 08/23/2016
Event Time: 13:56 [EDT]
Last Update Date: 08/23/2016
Notification Time: 15:30 [ET]
Event Date: 08/23/2016
Event Time: 13:56 [EDT]
Last Update Date: 08/23/2016
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):
ERIC MICHEL (R2DO)
ERIC MICHEL (R2DO)
| Unit | SCRAM Code | RX Crit | Initial PWR | Initial RX Mode | Current PWR | Current RX Mode |
|---|---|---|---|---|---|---|
| 2 | M/R | Y | 43 | Power Operation | 0 | Hot Standby |
MANUAL TRIP DUE TO A LOSS OF MAIN FEEDWATER
"On August 23, 2016, at 1356 EDT, Watts Bar Nuclear Plant [WBN] Unit 2 reactor was manually tripped due to a loss of main feedwater.
"Concurrent with the reactor trip, the Auxiliary Feedwater system actuated as designed.
"All control and shutdown rods fully inserted. All safety systems responded as designed. The unit is currently stable in Mode 3, with decay heat removal via Auxiliary Feedwater and main steam dump systems. Unit 2 is in a normal shutdown electrical alignment.
"The cause is currently under investigation.
"This is being reported under 10CFR 50.72(b)(3)(iv)(A) and 10CFR 50.72(b)(2)(iv)(B).
"There was no effect on WBN Unit 1.
"The NRC Senior Resident Inspector has been notified."
"On August 23, 2016, at 1356 EDT, Watts Bar Nuclear Plant [WBN] Unit 2 reactor was manually tripped due to a loss of main feedwater.
"Concurrent with the reactor trip, the Auxiliary Feedwater system actuated as designed.
"All control and shutdown rods fully inserted. All safety systems responded as designed. The unit is currently stable in Mode 3, with decay heat removal via Auxiliary Feedwater and main steam dump systems. Unit 2 is in a normal shutdown electrical alignment.
"The cause is currently under investigation.
"This is being reported under 10CFR 50.72(b)(3)(iv)(A) and 10CFR 50.72(b)(2)(iv)(B).
"There was no effect on WBN Unit 1.
"The NRC Senior Resident Inspector has been notified."