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Entered date | Event description | |
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ENS 55763 | 3 March 2022 09:57:00 | 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 |