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Event Notification Report for December 05, 2023

U.S. Nuclear Regulatory Commission
Operations Center

EVENT REPORTS FOR
12/04/2023 - 12/05/2023

EVENT NUMBERS
56879
Agreement State
Event Number: 56879
Rep Org: WA Office of Radiation Protection
Licensee: WestRock Longview, LLC
Region: 4
City: Longview   State: WA
County:
License #: WN-I090-1
Agreement: Y
Docket:
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)
NMSS_EVENTS_NOTIFICATION (EMAIL)
Event Text
AGREEMENT STATE - STUCK SHUTTER

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