What is the NCRP recommended annual effective dose limit for occupational exposure?

The NCRP, or the National Council on Radiation Protection and Measurements, provides guidelines for radiation protection, including recommended limits for occupational exposure. According to their recommendations, the annual effective dose limit for individuals working in radiation-related fields is set at 5.0 rem (0.05 Sv). This limit is established to minimize the risk of radiation-induced health effects while allowing professionals to perform their duties safely.

A limit of 5.0 rem reflects a balance between ensuring safety for radiologic workers and acknowledging the need for exposure in necessary occupational tasks. This threshold takes into account the cumulative effects of radiation over time, aiming to protect workers from developing potential adverse health effects due to prolonged or repeated exposure to ionizing radiation.

The other options represent dose limits that are not aligned with the current NCRP recommendations for occupational exposure and would be inadequate for the necessary protection of workers operating within environments that expose them to radiation.