ENS Event | |
|---|---|
05:00 Jul 18, 2012 | |
| Title | Agreement State Report - Gauge Shutter Failure |
| Event Description | The following information was received by email:
On the evening of July 18, 2012 the licensee's radiation safety officer contacted the [Illinois Emergency Management] Agency's Radiation Duty Officer to advise that a fixed gauge had failed to perform as expected when an attempt was made to close the shutter in advance of work scheduled to be performed on the vessel it was mounted on. The RSO reports that although the spindle of the handle rotated, the shutter did not close. The shutter remained stuck in the 'open' position and would not close. As a result, the planned work was deferred and access to the confined space has been prohibited. The gauge is mounted such that there are no adjacent work stations and unrestricted access is not possible. Radiation monitoring performed by the radiation safety officer showed no abnormal readings. The gauge shutter had been successfully tested in March with no abnormalities at that time. The gauge is mounted in such a way that although it is exposed to ambient temperatures, it is not directly exposed to the elements by virtue of an overhead cover. The gauge has not been subjected to any corrosives or solvents or other conditions which exceed the gauge prototype's test conditions. Arrangements have been made to have the manufacturer's representative on-site to conduct an evaluation and effect repairs as necessary at the end of the week. The fixed gauge is a model SA-1 manufactured by Ronan Engineering (serial number 69094). The gauge contains a Cs-137 sealed source (.082 Ci). Illinois Incident: IL 12011 |
| Where | |
|---|---|
| Flint Hills Resources Chemical Intermediates Joliet, Illinois (NRC Region 3) | |
| Organization: | Illinois Emergency Mgmt. Agency |
| Reporting | |
| Agreement State | |
| Time - Person (Reporting Time:+154.83 h6.451 days <br />0.922 weeks <br />0.212 months <br />) | |
| Opened: | Daren Perrero 15:50 Jul 24, 2012 |
| NRC Officer: | Vince Klco |
| Last Updated: | Jul 24, 2012 |
| 48130 - NRC Website | |
Flint Hills Resources Chemical Intermediates with Agreement State | |
WEEKMONTHYEARENS 483022012-09-11T05:00:00011 September 2012 05:00:00
[Table view]Agreement State Agreement State Report - Fixed Nuclear Gauge Found with Stuck Shutter ENS 481302012-07-18T05:00:00018 July 2012 05:00:00 Agreement State Agreement State Report - Gauge Shutter Failure 2012-09-11T05:00:00 | |