Texas Industrial Radiography Gamma Practice Test

What device is used to move a sealed source to an exposure location in industrial radiography?

1. Source Changer

2. Crank-Out Device

3. Collimator

4. Guide Tube

The correct answer is: Crank-Out Device

In industrial radiography, the device used to move a sealed source to an exposure location is known as a Crank-Out Device. This device allows for the safe and controlled movement of the sealed radioactive source during the radiographic process, enabling the inspector to maintain a safe distance from the radiation while positioning the source where it is needed for examination. The Crank-Out Device involves a mechanism that securely houses the source and facilitates its extension into the area being tested, so the radiographer can obtain the necessary images without directly handling the source or being in proximity to radiation. This ensures that appropriate safety measures are upheld while performing the radiographic inspection. Other options like the Source Changer, Collimator, and Guide Tube serve different functions in the radiographic process. The Source Changer is typically used for replacing or loading sources, a Collimator is utilized to focus and shape the radiation beam, and the Guide Tube directs the source during exposure but does not operate the movement mechanism itself. Understanding the specific roles of these devices highlights why the Crank-Out Device is the correct choice for moving the sealed source.