ASNT Industrial Radiography Radiation Safety Practice Test

What are the three classifications of exposure devices in radiography?

1. P, F, M

2. Portable, Mobile, Fixed

3. Open, Closed, Mobile

4. Type I, Type II, Type III

The correct answer is: Portable, Mobile, Fixed

In industrial radiography, exposure devices are classified based on their design and usage into three primary categories: portable, mobile, and fixed. Portable exposure devices are designed for easy transport and can be manually moved to various locations for radiographic testing. This versatility makes them ideal for fieldwork or situations where the radiographic task needs to be performed at multiple sites. Mobile exposure devices, while also transportable, typically have features that allow them to be used more dynamically within a facility or setup. They generally possess wheels or mounts to assist with movement and are equipped for more frequent repositioning compared to fixed devices. Fixed exposure devices are permanently installed at a specific location, usually within a radiography shop or a dedicated Testing area. They are not intended for relocation once installed, which provides stability for repetitive tasks but limits flexibility. This classification system helps in determining the appropriate device for particular radiographic tasks, ensuring safety, efficiency, and conforming to radiation safety regulations.