Which of the following situations is considered an incident?

An incident in the context of radiation safety is typically defined as an occurrence that may lead to a breach of safety protocols, potentially compromising the health and safety of personnel or the environment. A higher than normal reading on a dosimetry report indicates that an individual has been exposed to a level of radiation that is above the expected range, which raises immediate concerns about safety measures, exposure guidelines, and potential health risks. This situation necessitates further investigation and corrective actions to ensure that guidelines are followed and to protect the affected individual and others in the vicinity.

In contrast, the other options represent routine scenarios or properly managed situations. For example, a tritium device being properly stored does not indicate any issues with safety protocols. Conducting an operational drill is a standard practice to enhance safety preparedness and does not denote any real threat or problem. Finally, the appointment of a new radiation safety officer is a procedural action aimed at enhancing safety oversight but does not indicate any incident requiring immediate attention.