Semantic search
Jump to navigation
Jump to search
| Start date | Reporting criterion | Title | Event description | System | LER | |
|---|---|---|---|---|---|---|
| ENS 53995 | 12 April 2019 12:00:00 | 10 CFR 30.50(b)(2) | Process Gauge Stuck Shutter | The following is a synopsis of an event received via email: On April 11, 2019, a trained technician was in the process of performing the biannual inventory/shutter check when the individual reported that Kay Ray Model #7050, Serial #1399, 250 mCi, Cs-137 gauge located on 5B DTU (Deslime Thickener U/Flow) in the Deslime basement had a frozen shutter mechanism and cannot be closed, rendering the shutter non-operable. The gauge won't be replaced until the first time the slurry pipeline goes down for repair. If the line goes down prior to that, the gauge will be replaced at that time. Similar events in the past have never had an exposure to any individuals. In the event of an emergency, the gauge will be removed and placed on a piece of lead and brought to storage. | ||
| ENS 53727 | 9 November 2018 05:00:00 | 10 CFR 30.50(b)(2) | Stuck Open Shutter on Process Gauge | In the process of performing the inventory/shutter check it was reported on November 09, 2018 at 1030 (EST) that our (Tilden Mining Co.) Kay Ray Model #7050, Serial #1412, 200mCi, Cs-137 gauge located on 6B DTU (Deslime Thickener U/Flow) in the deslime basement had a broken handle on the shutter mechanism, rendering the shutter non-operable. Work order (1836130) was entered into Ellipse. It was determined that the area in which the gauge is located does not create an exposure hazard. The plant process requires the shutter to remain in the open position during normal operation and does not create a hazard to individuals, the course of action will be to remove and replace the gauge at the first opportunity. Once the gauge is removed, it will be placed and locked in (a) cage. The gauge will be placed on top of the required amount of lead to remove any potential exposure hazard; surveys will be performed to confirm personal safety. | ||
| ENS 53713 | 19 March 2015 04:00:00 | 10 CFR 30.50(b)(2) | Process Gauge Shutter Stuck Open | In the process of performing the inventory/shutter check it was reported on March 19, 2015 that our Kay Ray Model Number: 7050, Serial Number: 1405, 200 mCi, Cs-137 gauge located on 4B DTU (Deslime Thickener U/Flow) in the deslime basement had a broken handle on the shutter mechanism, rendering the shutter non-operable. Work order (1545064) was entered into Ellipse. It was determined that the area in which the gauge is located does not create an exposure hazard. The plant process requires the shutter to remain in the open position during normal operation and does not create a hazard to individuals, the course of action will be to remove and replace the gauge at the first opportunity. Once the gauge is removed, it will be placed and locked in the cage located in the warehouse. The gauge will be placed on top of the required amount of lead to remove any potential exposure hazard; surveys will be performed to confirm personnel safety. |