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The following was received from the State of Oregon via email: On February 17, 2011 at 0800 PDT, OR Radiation Protection Services was notified by phone by (the licensee), HazMat Resource Coordinator, a representative of the Oregon Office of the State Fire Marshal (OSFM) regarding a missing Smith's Detection model APD2000 ECD device (s/n 1276) containing 10 mCi of Nickel-63 (source s/n is the same as device, 1276). There were no equipment problems noted. The device was stored at Hazmat Team 7, stationed in Redmond, Oregon. The team was disbanded in late 2008 and the device was believed returned to the Salem, Oregon main OSFM office in early 2009. During equipment inventory in September (no date given, 1-30th supplemented), 2010, the device was discovered missing. OSFM personnel wrote a memo dated Sept. 2010, and addressed 'MEMO to File' stating the device was missing and that this was reported to Oregon RPS. No record of the memo having been received was found in RPS records for the license (The licensee) stated that the remaining seventeen APD2000 units in possession were to be disposed of through the CRCPD's SCATR program sometime in the next 2 months. An incident report was started by OR RPS on this date (February 17th) for the missing device/radioactive source.

On April 8, 2011, the seventeen APD2000 units were shipped by waste broker (Thomas Gray and Associates) to affiliate company EMC in Turlock, CA. On May 26, 2011 during regular equipment inventory at the Corvallis, Oregon Hazmat team 5B office, the missing APD2000 was located at the back of a storage cabinet. The device was removed and brought to Salem and (the State was) contacted for disposal of this device through the CRCPS SCATR program. A leak test was taken June 7th and analyzed June 8th showing detection less than .005 microCurie for Ni-63. On June 15, 2011, the device was transferred to Thomas Gray and Associates for disposal and the license terminated on July 1, 2011. On July 16, 2013, a review was performed of this incident and it was discovered that it was not reported to the US NRC HOO as per the NRC's Reporting Material Events (SA-300), Appendix A. The specific requirement is 10 CFR 20.2201(a)(1)(ii) which states, in part, that reports of missing licensed material > 10X Appendix C value and still missing is to be reported (30 day requirement). The report was written and submitted via e-mail to the HOO on July 19th. State Event Number: OR-11-0007 Sources that are "Less than IAEA Category 3 sources," are either sources that are very unlikely to cause permanent injury to individuals or contain a very small amount of radioactive material that would not cause any permanent injury. Some of these sources, such as moisture density gauges or thickness gauges that are Category 4, the amount of unshielded radioactive material, if not safely managed or securely protected, could possibly - although it is unlikely - temporarily injure someone who handled it or were otherwise in contact with it, or who were close to it for a period of many weeks. For additional information go to http://www-pub.iaea.org/MTCD/publications/PDF/Pub1227_web.pdf