What is the annual equivalent dose limit to the skin, hands, and feet?

The annual equivalent dose limit to the skin, hands, and feet is set at 500 mSv. This limit is established to protect these tissues from the harmful effects of ionizing radiation, as they are among the most exposed parts of the body for professionals working in radiation-related fields, such as medical dosimetry and radiology. The skin, hands, and feet can receive higher doses than other parts of the body due to their practical involvement in handling radioactive materials or equipment.

This limit is particularly important because the skin can develop radiation-induced effects at higher doses, and due to the relatively high cellular turnover of the epidermis, the risk for local tissue effects increases significantly. The regulatory guidance helps ensure that individuals who may be exposed to higher radiation levels due to their occupational duties have their risk of developing skin conditions, such as erythema or skin cancers, minimized.

The other options provided are below the regulatory threshold set to adequately protect these areas from radiation exposure. They do not align with the established safety standards for occupational exposure, which is crucial for maintaining safety and health in radiation-intensive environments.