ENS 56229

v t e ENS Event
06:00 Oct 18, 2022
Title	Gauge Shutter Failure
Event Description	The following information was provided by the Arkansas Department of Health [the Department] via email: On October 28, 2022, the Department received notification from Domtar, Ashdown Mill of a failed shutter on October 18, 2022. The failure occurred during a site-wide nuclear gauge shutter check being performed by a licensed third-party consultant. The failure was due to the shaft that allows for the operation of the shutter broke and the rectangular shutter control interface was no longer able to control the shutter. The licensee's immediate corrective action included shutting down the process system and closing the shutter. The gauge with the failed shutter, a Berthold LB 7440, serial # 1460-5-90, internal 50 mCi Cs-137 source # 012-00022 was removed and placed into the licensee's storage facility. A spare gauge, a Berthold LB 7440-D-CR, serial # 2730-8-90, internal 100 mCi Cs-137 source #012-00089 was placed in service. Leak tests for both gauges were performed which indicated no contamination. The licensee confirmed no public or employee exposure occurred. The failed gauge in storage is currently waiting to be repaired or disposed of in December. The reporting requirement is under the Department's 'Rules for Control of Sources of Ionizing Radiation' RH402.c.5 and 10 CFR Part 31.5 (c)(5). Arkansas Event Number: AR-2022-9

ENS 56229 +/-
Where
Domtar, Ashdown Mill Ashdown, Arkansas (NRC Region 4)
License number:	ARK-0354
Organization:	Arkansas Department Of Health
Reporting

Agreement State
Time - Person (Reporting Time:+731.13 h30.464 days <br />4.352 weeks <br />1.002 months <br />)
Opened:	Don Betts 18:08 Nov 17, 2022
NRC Officer:	Karen Cotton-Gross
Last Updated:	Nov 17, 2022
56229 - NRC Website
v • d • e

v t e Emergency Notification System
Domtar, Ashdown Mill with Agreement State
WEEKMONTHYEAR2022-10-18T06:00:00 [Table view]
[ENS list for Domtar, Ashdown Mill]

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