| U.S. Nuclear Regulatory Commission
Operations Center Event Reports For
11/13/2018 - 11/14/2018 ** EVENT NUMBERS ** |
| !!!!! THIS EVENT HAS BEEN RETRACTED.THIS EVENT HAS BEEN RETRACTED !!!!! | | Power Reactor | Event Number: 53657 | Facility: QUAD CITIES
Region: 3 State: IL
Unit: [1] [2] []
RX Type: [1] GE-3,[2] GE-3
NRC Notified By: JEFFREY EASLEY
HQ OPS Officer: STEVEN VITTO | Notification Date: 10/10/2018
Notification Time: 03:26 [ET]
Event Date: 10/09/2018
Event Time: 00:00 [CDT]
Last Update Date: 11/14/2018 | Emergency Class: NON EMERGENCY
10 CFR Section:
50.72(b)(3)(v)(D) - ACCIDENT MITIGATION
| Person (Organization):
AARON McCRAW (R3DO) | | 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 CONTROL ROOM EMERGENCY VENTILATION AC SYSTEM INOPERABLE
"On October 9, 2018 at 2002 CDT the Control Room Emergency Ventilation Air Condition (CREV AC) system was in the process of being returned to service following maintenance. During the return to service, the end bell on the CREV AC Condenser developed a significant leak requiring isolation. No work was performed on the CREV AC Condenser during the work window.
"The CREV AC system maintains a habitable control room environment and ensures the operability of components in the control room emergency zone during accident conditions.
"This notification is being made in accordance with 10CFR50.72(b)(3)(v)(D), "Event or Condition That Could Have Prevented Fulfillment of a Safety Function " because the CREV system is a single train system required to mitigate the consequences of an accident."
The NRC Resident Inspector has been notified.
* * * RETRACTION AT 1714 EST ON 11/14/2018 FROM JASON SWAIN TO JEFF HERRERA * * *
"The purpose of this notification today (November 14, 2018) is to retract the ENS Report made on October 10, 2018 at 0326 EDT (ENS Report #53657).
"Upon further investigation, it was determined that while the CREV AC system was out of service for planned maintenance and inoperable, the return to service valve sequencing caused an in-rush of residual heat removal service water (RHRSW) at 300 psig dead-heading into the refrigeration condensing unit (RCU). Previous normal sequencing had refilled the RCU with service water which is supplied at 100 psig. This unexpected higher than normal pressure on the RCU end bell gasket (rated at 150 psig) caused the gasket to be pushed from its normally seated position to allow a leak path. The gasket was not previously leaking; upon removal was inspected and no evidence of premature cracks or tears were found.
"The CREV AC system leak was induced by an improper coordination of return to service activities at the time of discovery, and the leak path was not previously present. This was not a latent failure. As such, a pre-exiting condition that could have prevented the fulfillment of a safety function did not exist, and based on this information, ENS Report# 53657 is being retracted.
"Note: On October 11, 2018 at 1330 hours CDT, the CREV RCU System gaskets were replaced and the system was returned to service under the properly sequenced tagout and was returned to Operable status.
"The NRC Resident Inspector has been notified. "
Notified the R3DO (Peterson). |
| Agreement State | Event Number: 53715 | Rep Org: FLORIDA BUREAU OF RADIATION CONTROL
Licensee: TTCS ENGINEERING
Region: 1
City: TAMPA State: FL
County:
License #: 4564-1
Agreement: Y
Docket:
NRC Notified By: DAVID PIESKI
HQ OPS Officer: PHIL NATIVIDAD | Notification Date: 11/05/2018
Notification Time: 11:30 [ET]
Event Date: 11/04/2018
Event Time: 00:00 [EST]
Last Update Date: 11/06/2018 | Emergency Class: NON EMERGENCY
10 CFR Section:
AGREEMENT STATE
| Person (Organization):
DAVE WERKHEISER (R1DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
ILTAB (EMAIL) | | This material event contains a "Less than Cat 3" level of radioactive material. | Event Text AGREEMENT STATE REPORT - STOLEN TROXLER MOISTURE-DENSITY GAUGE
The following information was received from the State of Florida via e-mail:
"[The Licensee Operations Manager ] called [the Florida Bureau of Radiation Control] to report a Troxler gauge theft from the truck of [an operator]. The gauge was noted missing from the back of [the operator's] truck on Sunday, November 4, 2018. The Incident was reported to this office [Florida Bureau of Radiation Control] on November 5, 2018 at 1030 EST. [The Licensee Operations Manager] plans to call local law enforcement to report the theft. At the time of this report, [the Licensee Operations Manager] could not furnish [the operator's] residential address."
The gauge contained an 8 mCi Cs-137 source and a 40 mCi Am-241/Be source.
Florida Incident Number: FL18-136
* * * UPDATE FROM MARK SEIDENSTICKER TO TOM KENDZIA AT 1050 EST ON 11/6/2018 * * *
The following information was reported via phone:
The Florida Bureau of Radiation Control was informed that the Troxler gauge has been found. They have no other information at this time.
Notified R1DO (WERKHEISER), ILTAB (via E-mail), and NMSS Events Notifications E-mail group.
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 |
| Agreement State | Event Number: 53716 | Rep Org: COLORADO DEPT OF HEALTH
Licensee: KARCHER NORTH AMERICA INC.
Region: 4
City: ENGLEWOOD State: CO
County:
License #: GL001195
Agreement: Y
Docket:
NRC Notified By: KATHRYN MOTE
HQ OPS Officer: VINCE KLCO | Notification Date: 11/05/2018
Notification Time: 11:26 [ET]
Event Date: 11/02/2018
Event Time: 00:00 [MST]
Last Update Date: 11/05/2018 | Emergency Class: NON EMERGENCY
10 CFR Section:
AGREEMENT STATE
| Person (Organization):
MARK HAIRE (R4DO)
NMSS_EVENTS_NOTIFICATION (EMAIL)
ILTAB (EMAIL) | | This material event contains a "Less than Cat 3" level of radioactive material. | Event Text AGREEMENT STATE REPORT - LOST STATIC ELIMINATORS
The following information was received via email:
"When conducting the annual reconciliation, Karcher North America, INC. reported eleven lost static eliminators.
"Static Eliminators:
Model: P-2021 8101.
Isotope/units: PO-210, 10 mCi ea.
Serial Numbers: A2JZ217, A2KH719, A2CP799, A2DM543, A2DT589, A2DU443, A2DU444, A2EZ668, A2GS233, A2JD061, A2JD062."
Colorado Event Report ID No.: CO180027
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 | |