On February 13, 2019, the NRC issued a Notice of Violation to Mistras Group, Inc. (licensee) for a Severity Level III violation. The violation involved the licensee’s failure to confine the use of byproduct material to the purposes authorized in its license in accordance with 10 CFR 30.34(c). Specifically, on September 9, 2017, a Mistras employee used a radiographic exposure device at a temporary job site to radiograph his own hand, a use not authorized by its NRC license.