Texas Industrial Radiography Gamma Practice Test

What is the term for a device that contains a sealed source and allows for radiographic exposure?

1. Collimator

2. X-Ray Tube

3. Exposure Device

4. Source Guide Tube

The correct answer is: Exposure Device

The term for a device that contains a sealed source and allows for radiographic exposure is known as an exposure device. This equipment is specifically designed to safely house radioactive materials, which emit radiation that is used to create images of the internal structure of objects for non-destructive testing (NDT) purposes. In industrial radiography, the exposure device plays a critical role as it not only contains the radioactive source but also provides mechanisms to control and direct the radiation safely to the area of interest. This makes it essential for ensuring that operators and nearby personnel are protected from unnecessary radiation exposure while performing radiographic inspections. The other options, while related to radiographic practices, refer to different components or systems. A collimator is used to narrow the beam of radiation to reduce exposure and improve image quality. An X-ray tube is a different source of radiation that works on a different principle (producing X-rays rather than using a radioactive source). A source guide tube is used to direct the radiation from the exposure device to the target area but does not contain the source itself.