Event Notification Report for December 13, 2023

U.S. Nuclear Regulatory Commission
Operations Center

12/12/2023 - 12/13/2023

56879 56886
Agreement State
Event Number: 56879
Rep Org: WA Office of Radiation Protection
Licensee: WestRock Longview, LLC
Region: 4
City: Longview   State: WA
License #: WN-I090-1
Agreement: Y
NRC Notified By: James Killingbeck
HQ OPS Officer: Ernest West
Notification Date: 12/05/2023
Notification Time: 20:37 [ET]
Event Date: 12/05/2023
Event Time: 00:00 [PST]
Last Update Date: 12/05/2023
Emergency Class: Non Emergency
10 CFR Section:
Agreement State
Person (Organization):
Dixon, John (R4DO)
Event Text

The following information was provided by the The Washington State Department of Health via email:

"The shutter on a fixed nuclear gauge [a Vega Americas Corp. Model No. SH-F1 gauge containing 53 millicuries of Cs-137] was unable to be closed when licensee staff attempted to lock it out. Licensee staff consulted with the manufacturer and, per the manufacturer's recommendation, installed four inches of steel plates in front of the fixed nuclear gauge to shield it. After installation of the steel plates, radiation levels were 0.2 mR/hour. The licensee is planning to replace the entire fixed nuclear gauge, per the manufacturer's recommendation, as the manufacturer has previously replaced the shutter on this gauge. The steel plates will remain installed until the fixed nuclear gauge is replaced. The Washington State Department of Health will gather additional information about this event and will submit an updated event report. An investigation may be conducted."

WA Event Number: WA-23-031

Non-Agreement State
Event Number: 56886
Rep Org: Liveo Research Inc.
Licensee: Liveo Research Inc.
Region: 1
City: New Castle   State: DE
License #:
Agreement: N
NRC Notified By: John Oikemus
HQ OPS Officer: Karen Cotton-Gross
Notification Date: 12/11/2023
Notification Time: 16:50 [ET]
Event Date: 08/21/2023
Event Time: 00:00 [EST]
Last Update Date: 12/11/2023
Emergency Class: Non Emergency
10 CFR Section:
30.50(b)(2) - Safety Equipment Failure
Person (Organization):
Gray, Mel (R1DO)
Event Text

The following is summary of information provided by the licensee via email and phone:

On December 11, 2023, the licensee reported that the point level sensor containment attached to a power feeder was damaged and the internal shutter would not close. The licensee noticed issues with the point level sensor on June 28, 2023. On July 6, 2023, a work order was submitted for servicing the point level sensor. On August 21, 2023, the level senor was serviced, and the technician informed the licensee that due to the damage of the containment the unit was non-repairable. The estimated dose to staff from June 28, 2023 to August 21, 2023 is 1.8 mrem. The device was removed from service on October 5, 2023.

Source and Containment Information:
Source: Cs-137
Containment Model Number: FQG60
Serial Number: J8003301141
Activity: 740 MBq/20 mCi
Manufacturing Date: 08/2014