ENS Event | |
|---|---|
05:00 May 28, 2017 | |
| Title | Agreement State Report - Stuck Shutter on a Fixed Gauge |
| Event Description | The following report was received from the Mississippi Department of Health via email:
Licensee's RSO [Radiation Safety Officer] reported a stuck shutter on a Ronan Model SA8-C10 fixed gauge, Serial No. 1093CP, Source Model CDC.700. This was noticed during preventive maintenance, while performing shutter checks. Licensee notified the manufacturer for service. Isotope: Cs-137 Activity: 200 mCi
The following update was received via e-mail: Licensee reported that the gauge had been repaired by the manufacturer and returned to service. The gauge manufacturer's field engineer reported that the gauge shutter was able to be closed with channel lock pliers before the gauge was removed from the vessel. The field engineer reported that the lead ceiling portion of the shutter cavity was tight against the shutter assembly causing the shutter assembly to bind and not close. The field engineer suspects that water leached in behind the lead and froze, thereby pushing the lead deeper into the shutter cavity. The field engineer removed the expanded lead from hitting the shutter. Once the gauge had its seals replaced, the source holder was reassembled. The gauge was then wiped for removable contamination, surveyed at 30 cm and 12 in, and remounted by the field engineer for continued use. The wipe test was negative (less than 0.001uCi) for removable contamination and all fifteen (15) surveys were less than 1 mR/Hr with the gauge shutter open. Mississippi Report: MS-17001 Notified the R4DO (Farnholtz) and NMSS Resources (via e-mail). |
| Where | |
|---|---|
| Ms Power Company De Kalb, Mississippi (NRC Region 4) | |
| License number: | MS-1062-01 |
| Organization: | Mississippi Div Of Rad Health |
| Reporting | |
| Agreement State | |
| Time - Person (Reporting Time:+53.32 h2.222 days <br />0.317 weeks <br />0.073 months <br />) | |
| Opened: | Jayson Moak 10:19 May 30, 2017 |
| NRC Officer: | Jeff Herrera |
| Last Updated: | Jul 5, 2017 |
| 52774 - NRC Website | |
Ms Power Company with Agreement State | |
WEEKMONTHYEARENS 527742017-05-28T05:00:00028 May 2017 05:00:00
[Table view]Agreement State Agreement State Report - Stuck Shutter on a Fixed Gauge 2017-05-28T05:00:00 | |