ENS Event | |
|---|---|
05:00 Apr 2, 2026 | |
| Title | |
| Event Description | The following information was provided by the Illinois Emergency Management Agency and Office of Homeland Security (the Agency) via email:
On April 3, 2026, the Agency was notified by the radiation safety officer (RSO) at Nouryon Surface Chemistry, LLC (IL-01445-01), to advise of a fixed gauge with a stuck shutter in the open position. The issue was discovered on April 2, 2026, during a routine 6-month maintenance check/inventory on the following Ronan nuclear gauge: 3M Model 4F6S (S/N M2377) Cs-137 (300 mCi as of June 1988). The RSO reported that the source normally operates in the open position and does not pose a risk to the public or employees in its current state. Surveys were conducted and readings were as expected. Repair of the stuck shutter is scheduled to occur on April 7, 2026, by the manufacturer, Ronan Engineering Company (77-00141-01). An inspector will be on site that day to conduct a reactive inspection. Illinois Item Number: IL260010 |
| Where | |
|---|---|
| Nouryon Surface Chemistry, Llc Morris, Illinois (NRC Region 3) | |
| License number: | IL-01445-01 |
| Organization: | Illinois Emergency Mgmt. Agency |
| Reporting | |
| Agreement State | |
| Time - Person (Reporting Time:+35.53 h1.48 days <br />0.211 weeks <br />0.0487 months <br />) | |
| Opened: | Kimberly Stice 16:32 Apr 3, 2026 |
| NRC Officer: | Sam Colvard |
| Last Updated: | Apr 3, 2026 |
| 58233 - NRC Website | |
Nouryon Surface Chemistry, Llc with Agreement State | |
WEEKMONTHYEARENS 582332026-04-02T05:00:0002 April 2026 05:00:00
[Table view]Agreement State Stuck Shutter 2026-04-02T05:00:00 | |