Event Notification Report for December 24, 2020
U.S. Nuclear Regulatory Commission
Operations Center
EVENT REPORTS FOR
12/23/2020 - 12/24/2020
Agreement State
Event Number: 55039
Rep Org: SC DEPT OF HEALTH & ENV CONTROL
Licensee: Self Regional Health Care
Region: 1
City: Greenwood State: SC
County:
License #: 073
Agreement: Y
Docket:
NRC Notified By: Adam Gause
HQ OPS Officer: Howie Crouch
Notification Date: 12/17/2020
Notification Time: 17:25 [ET]
Event Date: 12/14/2020
Event Time: 00:00 [EST]
Last Update Date: 12/17/2020
Emergency Class: Non Emergency
10 CFR Section:
Agreement State
Person (Organization):
AMBROSINI, JOSEPHINE (R1)
NMSS_EVENTS_NOTIFICATION, (EMAIL)
Event Text
AGREEMENT STATE REPORT - SOURCE ROOM DOOR INTERLOCKS FAILED TO FUNCTION
The following information was received from the South Carolina Department of Health and Environmental Control via email:
"The South Carolina Department of Health and Environmental Control was notified on 12/16/20 that a piece of equipment was disabled or failed to function as designed when the equipment is required by regulation or license condition to prevent exposures to radiation and radioactive materials exceeding regulatory limits, or to mitigate the consequences of an accident. The licensee reported that the electrical interlocks at the remote afterloader room entrance failed to function from 12/14/20 until 12/17/20. The source in the remote afterloader unit is a Varian Medical Systems, Inc. Model GammaMed 232, Ir-192 source, with a reported activity of 8.5 Curies. The remote afterloader unit is a Varian Medical Systems, Inc. Model GammaMedplus iX. As of 12/17/20, the licensee is reporting that the electrical interlocks at the remote afterloader room entrance is now operable and functioning as designed. This event is still under investigation by the licensee and the South Carolina Department of Health and Environmental Control."
No overexposures were reported as a result of the failed interlocks.
Power Reactor
Event Number: 55046
Facility: LaSalle
Region: 3 State: IL
Unit: [] [2] []
RX Type: [1] GE-5,[2] GE-5
NRC Notified By: Matt Tutich
HQ OPS Officer: Andrew Waugh
Notification Date: 12/23/2020
Notification Time: 12:28 [ET]
Event Date: 12/23/2020
Event Time: 06:53 [CST]
Last Update Date: 12/23/2020
Emergency Class: Non Emergency
10 CFR Section:
50.72(b)(3)(v)(D) - Accident Mitigation
Person (Organization):
JAMNES CAMERON (R3DO)
Power Reactor Unit Info
| Unit |
SCRAM Code |
RX Crit |
Initial PWR |
Initial RX Mode |
Current PWR |
Current RX Mode |
| 2 |
N |
Y |
100 |
Power Operation |
100 |
Power Operation |
Event Text
HIGH PRESSURE CORE SPRAY INOPERABLE
"At 0653 CST on 12/23/20, it was discovered the single train of high pressure core spray was inoperable. Due to this inoperability, the system was in a condition that could have prevented the fulfillment of a safety function; therefore, this condition is being reported as an eight-hour, non-emergency notification per 10 CFR 50.72(b)(3)(v). All other emergency core cooling systems were operable during this time.
"There was no impact on the health and safety of the public or plant personnel. The NRC Resident Inspector has been notified."
The high pressure core spray is inoperable because the water lake pump tripped. This inoperability puts the licensee in a 14-day limiting condition for operability.