ENS Event | |
|---|---|
06:00 Jun 10, 2015 | |
| Title | Density Gauge Shutter Stuck Open |
| Event Description | The gauge is a Kay-Ray Model 7063P, serial number 8289 with a nominal source of 1 Curie of Cesium 137. The gauge is used for lime slurry density measurements in the Unit 1 Scrubber.
The malfunctioning shutter was discovered on June 6, 2015 during semiannual shutter checks as required by the license. The checks were completed today, and [the Radiation Safety Officer (RSO)] became aware of the issue as [the RSO] reviewed the documentation. Independent verification of the malfunction was made, it was found to not close. The cause of the malfunction is not known at this time. The gauge is located approximately sixteen feet above the ground level and presents no unusual risk to plant personnel. No maintenance activities will be conducted on the pipe or elbow the gauge is attached to until the shutter has been repaired. All plant personnel have been notified of the issue and the requisite restriction. [The RSO] contacted a properly licensed contractor to arrange for the repair to the shutter. This gauge is normally open during plant operation. |
| Where | |
|---|---|
| Basin Electric Power Cooperative Wheatland, Wyoming (NRC Region 4) | |
| License number: | 33-18224-01 |
| Organization: | Basin Electric Power Cooperative |
| Reporting | |
| 10 CFR 30.50(b)(2), Licensed Material Protection Equipment Failure | |
| Time - Person (Reporting Time:+8 h0.333 days <br />0.0476 weeks <br />0.011 months <br />) | |
| Opened: | David Cummings 14:00 Jun 10, 2015 |
| NRC Officer: | Mark Abramovitz |
| Last Updated: | Jun 10, 2015 |
| 51143 - NRC Website | |
Basin Electric Power Cooperative with 10 CFR 30.50(b)(2) | |
WEEKMONTHYEARENS 511432015-06-10T06:00:00010 June 2015 06:00:00
[Table view]10 CFR 30.50(b)(2) Density Gauge Shutter Stuck Open ENS 454472009-10-19T06:00:00019 October 2009 06:00:00 10 CFR 30.50(b)(2) Shutter on Nuclear Gauge Stuck Open ENS 454412007-02-16T06:00:00016 February 2007 06:00:00 10 CFR 30.50(b)(2) Coal Bunker Fire Damaged Density Gauge Containing 50 Millicurie Cs-137 2015-06-10T06:00:00 | |