According to NCRP recommendations, what is the equivalent dose limit for occupational exposure of skin, hands, and feet?

The correct answer regarding the equivalent dose limit for occupational exposure of the skin, hands, and feet, as recommended by the National Council on Radiation Protection and Measurements (NCRP), is that the limit is set at 50 rems (500 mSv).

This limit is established to ensure the safety and health of workers in environments where they might be exposed to radiation, recognizing that the skin, hands, and feet have different exposure characteristics and sensitivity compared to other organs. The NCRP guidelines take into account the potential risk of high doses to these areas during occupational activities related to ionizing radiation.

The higher dose limit for superficial tissues reflects the potential for these areas to receive localized doses, especially in professions such as radiology, nuclear medicine, and radiation therapy, where hands might frequently be exposed to radiation sources. By setting this limit at 50 rems, the NCRP aims to balance the need for personnel working with radiation to perform their jobs effectively while minimizing the risk of adverse health effects due to radiation exposure over time.