ENS Event | |
|---|---|
21:10 Dec 20, 2016 | |
| Title | Shutter and Shutter Mechanism Separated from Source Holder |
| Event Description | On December 20, 2016 [at approximately] 1510 CST, a [level detector] nuclear source holder was found fallen off of its mounting on the unit 2 economizer hopper #49. The shutter mechanism and the shutter appear to have separated from the source holder. This occurred at the Indiana Michigan Power Rockport plant in Rockport, Indiana. The source holder is a Vega Americas Model SHLD-1-45, serial number: 7185CP. It is a 20 millicurie Cesium 137 source. The plant's general license number is GL704402-21. The radiation around the fallen source holder was tested and found to be a maximum of 35 millirem/hr at 1 foot in the source beam path. The radiation was tested at the 20 foot boundary where danger tape has been placed around the source holder and readings of 0.08 to 0.12 millirem/hr were noted. A nuclear technician from Vega Americas is currently on his way to the plant and we are planning to attempt to repair the source holder this evening [December 21].
If we are unable to repair the source holder it will be prepared for shipping and will be sent back to Vega Americas' office in Cincinnati, Ohio for repair. |
| Where | |
|---|---|
| Indiana Michigan Power Rockport, Indiana (NRC Region 3) | |
| License number: | GL704402-21 |
| Organization: | Indiana Michigan Power |
| Reporting | |
| 10 CFR 30.50(b)(2), Licensed Material Protection Equipment Failure | |
| Time - Person (Reporting Time:+16.98 h0.708 days <br />0.101 weeks <br />0.0233 months <br />) | |
| Opened: | Steven Pfeister 14:09 Dec 21, 2016 |
| NRC Officer: | Howie Crouch |
| Last Updated: | Dec 21, 2016 |
| 52450 - NRC Website | |
Indiana Michigan Power with 10 CFR 30.50(b)(2) | |
WEEKMONTHYEARENS 524502016-12-20T21:10:00020 December 2016 21:10:00
[Table view]10 CFR 30.50(b)(2) Shutter and Shutter Mechanism Separated from Source Holder 2016-12-20T21:10:00 | |