ENS Event | |
|---|---|
04:00 Aug 12, 2017 | |
| Title | En Revision Imported Date 9/17/2018 |
| Event Description | EN Revision Text: GAUGE STUCK SHUTTER
On August 12, 2017, the Tilden Mining Company experienced a stuck open shutter on a gauge in the Tilden Unit 1 Cooler Chunk Tunnel. The licensee determined that the shutter lever was jammed with debris preventing the shutter from closing. The gauge was repaired on August 15, 2017. The Ronan RLL 1 source contains 0.9 milliCurie of Cesium-137 (serial number 317287A). There were no overexposures as a result of this event.
The licensee reported that the gauge was not repaired on August 15, 2017 as previously reported but was repaired on September 13, 2017. Notified R3DO (Hanna) and NMSS Events Notification (email). |
| Where | |
|---|---|
| Tilden Mining Company L.C. Ishpeming, Michigan (NRC Region 3) | |
| License number: | 21-26748-01 |
| Organization: | Tilden Mining Company L.C. |
| Reporting | |
| 10 CFR 30.50(b)(2), Licensed Material Protection Equipment Failure | |
| Time - Person (Reporting Time:+9368.75 h390.365 days <br />55.766 weeks <br />12.833 months <br />) | |
| Opened: | Lawrence Gray 12:45 Sep 6, 2018 |
| NRC Officer: | Andrew Waugh |
| Last Updated: | Sep 14, 2018 |
| 53582 - NRC Website | |
Tilden Mining Company L.C. with 10 CFR 30.50(b)(2) | |
WEEKMONTHYEARENS 538442019-01-24T05:00:00024 January 2019 05:00:00
[Table view]10 CFR 30.50(b)(2) En Revision Imported Date 2/19/2019 ENS 535822017-08-12T04:00:00012 August 2017 04:00:00 10 CFR 30.50(b)(2) En Revision Imported Date 9/17/2018 2019-01-24T05:00:00 | |