On August 2, 2018, the NRC issued a Notice of Violation for two Severity Level III violations of (1) 10 CFR 34.31(a); and (2) 10 CFR 150.20(b)(5). Specifically, on March 31, 2018, the licensee failed to adequately perform visual and operability checks on a radiographic exposure device and associated equipment before use on that day to ensure that the equipment was in good working condition. A guide tube disconnect occurred because the licensee's operability check did not ensure that the grease, dirt, and grime was cleared from the guide tube's connection to the exposure device, resulting in the inability to return the source to the shielded position. Further, the licensee failed to follow its emergency procedures to contact the RSO when a source cannot retract into a fully shielded position, which resulted in personnel conducting source recovery operations without having been properly trained and without RSO approval.