The following report was received via e-mail:
On 02/26/2015, the RSO for Boise Cascade called in a preliminary report [to the Louisiana Department of Environmental Quality] about a shutter missing on a gauge to be 'locked out' during a 24 hour2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> turn-a-round. The shutter is a manual sliding port cover that has to be removed when the gauge is used on the process. The removed shutter is stored by placing it on an adjacent surface until needed. Vibrations on the process had caused the port cover to fall approximately 50 ft. below the storage locations. However, this time the cover could not be located and the gauge could not be locked out. The gauge remained on the process until it could be repaired.
"On 02/26/2015, a replacement shutter/port cover was ordered from Thermo Measuretech. The shutter was delivered on 02/27/2015 and installed the same day. There was no radiation exposure risk to the public or workers. The gauge is installed on a 50 ft. elevation and the unshielded radiation field is approximately 0.3 mR/hr at 1 ft. from the surface of the device.
The gauge was a Texas Nuclear Device, TN 5192, s/n B3421 containing approximately 100 mCi of Cs-137 when installed during the mid-1980s.
"The Department [Louisiana Department of Environmental Quality] considers this item closed and the records will be reviewed during the next inspection.
Louisiana Event Report ID No.: LA 15-0005, T162439