On a radiographic job-site, if the source assembly becomes disconnected from the drive cable, the radiographer should:

The correct answer emphasizes the importance of following established safety protocols during radiographic operations. When a source assembly becomes disconnected from the drive cable, it represents a potential safety hazard, and it is crucial to handle the situation according to the procedures set forth in the licensee's Operating and Emergency Procedures. These procedures are designed to ensure the safety of personnel and the public and typically outline the steps necessary to secure the area, manage the disconnection of the source assembly, and mitigate any potential radiation exposure.

Following these procedures ensures that all actions are taken with the appropriate level of training and caution, considering the specific safety measures outlined for such incidents. This approach helps to prevent further complications, maintain safety standards, and ensures compliance with regulatory requirements.

Other options may not provide the necessary protocol or could lead to unsafe situations. For example, attempting to quickly reconnect the source assembly could introduce additional risks without addressing the underlying safety considerations. Similarly, notifying the local Hazardous Materials Unit could be appropriate in certain contexts, but following internal procedures is typically the immediate priority. Leaving the job site could also be an overreaction if proper safety protocols are in place to handle the situation effectively. Therefore, adhering to the established Operating and Emergency Procedures is the best course of action.