ENS Event | |
|---|---|
05:00 May 12, 2005 | |
| Title | Agreement State Report - Nuclear Gauge Fails to Function as Designed |
| Event Description | The State provided the following information via facsimile:
The RSO contacted the DHFS, Radiation Protection Section on May 12, 2005 to report a damaged shutter on a fixed gauge at their facility. The gauge is a Berthold Model LB7400D containing 350 mCi of Cs-137, SN DW954A. The licensee discovered the problem when they were preparing to do some maintenance work on the gauge. The detector was giving erroneous readings. The licensee observed higher radiation levels (12 Mr/hr on contact with the source holder) with the shutter in the 'closed' position than the 'open' position, (6 Mr/hr on contact with the source holder.) The licensee assumed that the shutter had failed. Berthold has been contacted and will provide a service visit on May 17 or 18. The gauge is in the same configuration as in operations. Access is restricted by a fence around the area, including a lock with keypad entry. The inspector who recently visited the licensee confirms that access is restricted. The gauge is on Line 5 at the Superior Terminal, Enbridge Pipeline. The licensee will send the required report following the service visit.
Wisconsin Radiation Protection Section would like to retract event number EN41696, Enbridge Pipeline, LLC. After reviewing the in-question housing, Berthold states that there is nothing wrong with the source housing. It appears to be an error on the licensee determining if the shutter was open or closed. Notified NMSS (M. Burgess) and R3DO (P. Louden) |
| Where | |
|---|---|
| Enbridge Pipeline Llc Superior, Wisconsin (NRC Region 3) | |
| License number: | 031-2006-01 |
| Organization: | Wisconsin Radiation Protection |
| Reporting | |
| Agreement State | |
| Time - Person (Reporting Time:+29.48 h1.228 days <br />0.175 weeks <br />0.0404 months <br />) | |
| Opened: | Mike Welling 10:29 May 13, 2005 |
| NRC Officer: | Wesley Held |
| Last Updated: | Jul 18, 2005 |
| 41696 - NRC Website | |
Enbridge Pipeline Llc with Agreement State | |
WEEKMONTHYEARENS 416962005-05-12T05:00:00012 May 2005 05:00:00
[Table view]Agreement State Agreement State Report - Nuclear Gauge Fails to Function as Designed 2005-05-12T05:00:00 | |