Which of the following personnel monitors would be appropriate for use when monitors are changed at 3-month intervals?

The choice of using a personnel monitoring device that is appropriate for intervals of 3 months is crucial in occupational radiation exposure scenarios. Both Thermoluminescent Dosimeters (TLD) and Optically Stimulated Luminescent (OSL) dosimeters have the features that make them suitable for this purpose.

TLDs are able to record exposure over an extended period and can be read out only when required, allowing for effective long-term dose assessment. They provide precise dosimetry and can be reused multiple times, which is beneficial for monitoring personnel exposure over quarterly intervals.

OSLs similarly have excellent sensitivity and can provide quantitative dose assessments. Like TLDs, they are capable of being read non-destructively and can also be utilized for extended periods. The advantage of OSLs includes their ability to accommodate a variety of environmental conditions without significant loss of accuracy.

In contrast, film badges, while once commonly used for monitoring radiation exposure, are less favorable for long-term monitoring. They can become less effective over time and are more susceptible to environmental factors like heat and humidity, which can affect their accuracy. Thus, their use would not typically align with a quarterly change schedule.

Overall, TLD and OSL dosimeters are designed to effectively