On October 5, 2022, the NRC issued a notice of violation to the National Institute of Standards and Technology (licensee) for a Severity Level (SL) III violation involving failure to comply with its license which states, in part, that Source Custodians shall maintain control over source utilization and ensure work is done in compliance with appropriate protocols, instructions, and safe handling practices. Specifically, a Source Custodian under contract with the licensee did not follow the appropriate instructions and emergency procedures when a release of radioactivity occurred during the preparation of short-lived radioactive standards. Instead, the Source Custodian attempted to decontaminate himself, equipment, and lab facilities to avoid disruption of his work.