ENS 55763

v t e ENS Event
06:00 Mar 2, 2022
Title	Stuck Shutter Gauge
Event Description	The following information was provided by the Iowa Department of Public Health via email: A stuck shutter was discovered Wednesday, March 2nd on the B-gauge, shutter 1. Entry to the gauge house has been prohibited per protocol. Measurements indicate an increase dose rate relative to background at the south side adjacent to the gauge and shutter 1 position, with a maximum reading of 0.11 mR/hr. The licensee's service provider, SenTek, has been requested to perform emergency repair work. The B-Gauge was repaired last night around 1900 CST. The shutter failed to close due to the solenoid valve that opens and closes the shutter, which would not vent pressure. The failed solenoid valve was replaced by a new valve. The project to replace these gauges with x-ray technology is ongoing and on track to be replaced by first quarter, 2023. Source/Radioactive Material: SEALED SOURCE GAUGE Manufacturer: Isotope Measuring Systems, Inc. Model Number: NOT KNOWN IAEA Category: 3 Serial Number: 2332-2336L Radionuclide: AM-241 Activity: 5 Ci (185 GBq) Iowa Event Number: IA220001

ENS 55763 +/-
Where
Arconic Davenport, Llc Bettendoff, Iowa (NRC Region 3)
License number:	0162182FG
Organization:	Iowa Department Of Public Health
Reporting

Agreement State
Time - Person (Reporting Time:+27.95 h1.165 days <br />0.166 weeks <br />0.0383 months <br />)
Opened:	Dahlin Randal 09:57 Mar 3, 2022
NRC Officer:	Karen Cotton-Gross
Last Updated:	Mar 3, 2022
55763 - NRC Website
v • d • e

v t e Emergency Notification System
Arconic Davenport, Llc with Agreement State
WEEKMONTHYEAR2024-04-22T05:00:00 [Table view]
[ENS list for Arconic Davenport, Llc]

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