Which of the following statements is true regarding controlled and uncontrolled areas?

The statement regarding controlled areas having a limit of 100 mR/week is true because controlled areas are designated zones where radiation exposure is carefully monitored and managed to ensure safety for workers and visitors. The 100 mR/week limit is established to minimize radiation exposure to individuals who may enter these areas. This helps maintain a safe environment for those who may be working with or near radiation sources, ensuring that exposure levels comply with regulations and recommendations set by regulatory agencies.

In contrast, uncontrolled areas, which typically refer to locations accessible to the public, have more lenient exposure limits. Therefore, they are usually not intended for work involving significant radiation sources. The limit for uncontrolled areas can vary, but it is generally much higher, allowing for public safety as long as exposure remains within acceptable ranges.

The requirement for both controlled and uncontrolled areas to have the same monitoring is inaccurate, as controlled areas have stricter monitoring protocols and may include the need for badges or other personal dosimetry devices for individuals working there. Uncontrolled areas do not necessitate such stringent monitoring since they are not expected to expose individuals to high levels of radiation routinely.

This distinction is crucial in radiation protection practices, ensuring both regulated exposure for workers and safety for the general public.