Which of the following information must be included on a durable and visible label attached to radiographic devices?

The requirement for including all of the listed information on a durable and visible label attached to radiographic devices stems from the need for safety and accountability in the use of radioactive materials. Each piece of information serves a specific purpose in promoting proper handling and identification of the device.

Including the chemical symbol and mass number of the radioactive source is crucial for identification and safety assessments. This information helps individuals who might handle or interact with the device understand the type of radioactive material involved, which is essential for assessing hazards and implementing appropriate safety measures.

Listing the activity and the date of the last measurement further informs users about the current status of the radioactive source. Knowing the activity level is important for determining the potential exposure risks and ensuring compliance with regulatory limits. The date helps track the decay of the radioactive material over time, which is critical for ensuring that safe levels are maintained.

Finally, having the model and serial number of the sealed device allows for traceability and accountability. It makes it easier to identify specific devices in the event of inspections, regulatory audits, or issues related to safety equipment. Manufacturers, users, and regulatory bodies all rely on this information when managing radiographic devices.

Overall, including all of this information on a visible label ensures that individuals can quickly and accurately identify inherent