ENS 56179: Difference between revisions
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A fixed nuclear gauge was determined to have a stuck shutter on 10/24/2022 and reported to the Iowa Department of Health & Human Services (Iowa - HHS) on the evening that same day. The C-frame (IMS model 5221-02) profile thickness device contains five, 5-curie Americium-241 sources with each having its own shutter [total device activity is nominally 25 curie of Am-241]. One of the five shutters (source holder number 2) was not working correctly. After troubleshooting (i.e., rebooting the gauge and failed standardizations) did not fix the computer error, the gauge was removed from the mill line and securely placed in the gauge house. Initial reported radiological surveys were 1.0 mR/hr directly under the shutter number 2 source holder and 11 inches above the receiver, and background around the perimeter of the secured gauge house. No personnel were overexposed from this incident, and Iowa HHS will gather additional information on what caused this equipment failure once it has been determined. The licensee's service provider was notified and is expected to be onsite for repairs on 10/25/2022. | A fixed nuclear gauge was determined to have a stuck shutter on 10/24/2022 and reported to the Iowa Department of Health & Human Services (Iowa - HHS) on the evening that same day. The C-frame (IMS model 5221-02) profile thickness device contains five, 5-curie Americium-241 sources with each having its own shutter [total device activity is nominally 25 curie of Am-241]. One of the five shutters (source holder number 2) was not working correctly. After troubleshooting (i.e., rebooting the gauge and failed standardizations) did not fix the computer error, the gauge was removed from the mill line and securely placed in the gauge house. Initial reported radiological surveys were 1.0 mR/hr directly under the shutter number 2 source holder and 11 inches above the receiver, and background around the perimeter of the secured gauge house. No personnel were overexposed from this incident, and Iowa HHS will gather additional information on what caused this equipment failure once it has been determined. The licensee's service provider was notified and is expected to be onsite for repairs on 10/25/2022. | ||
Iowa Event Number: IA220006 | Iowa Event Number: IA220006 | ||
| URL = https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2022/ | | URL = https://www.nrc.gov/reading-rm/doc-collections/event-status/event/2022/20221102en.html#en56179 | ||
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Latest revision as of 06:30, 2 November 2022
| Where | |
|---|---|
| Arconic Davenport, Llc Bettendorf, Iowa (NRC Region 3) | |
| License number: | 0162182FG |
| Organization: | Iowa Department Of Public Health |
| Reporting | |
| Agreement State | |
| Time - Person (Reporting Time:+29.47 h1.228 days <br />0.175 weeks <br />0.0404 months <br />) | |
| Opened: | Stuart Jordan 10:28 Oct 25, 2022 |
| NRC Officer: | Lloyd Desotell |
| Last Updated: | Oct 25, 2022 |
| 56179 - NRC Website | |