ASNT Industrial Radiography Radiation Safety Practice Test

What is the reading range a dosimeter should be capable of?

1. 0-100 mR

2. 0-300 mR

3. 0-200 mR

4. 0-1000 mR

The correct answer is: 0-200 mR

The appropriate reading range for a dosimeter used in industrial radiography should effectively cover the typical exposure levels encountered in such environments. A dosimeter capable of measuring from 0 to 200 mR is ideally suited to capture the low levels of radiation that may be encountered, especially during protected operations, while also being able to measure higher levels without saturating or becoming inaccurate. The choice of 200 mR as a maximum limit provides an optimal balance for many industrial applications where radiation exposure can fluctuate. This range ensures that workers are being appropriately monitored for their exposure to ensure safety while adhering to regulatory limits and best practices in radiation safety. In contrast, options that specify a lower maximum threshold, such as 100 mR, may not be adequate for all circumstances, especially in environments where operators might be exposed to higher levels of radiation. Meanwhile, a range extending to 1000 mR could be deemed excessive for typical operations and might result in a decrease in sensitivity for lower doses, which is crucial for monitoring and safety measures. Hence, the 0-200 mR range is particularly effective in providing accurate dosimetry in the context of industrial radiography.