What is the maximum annual permissible accumulated personnel dose allowed by law?

The maximum annual permissible accumulated personnel dose allowed by law is established to protect individuals from the harmful effects of radiation exposure while allowing for necessary occupational exposure in certain fields such as healthcare and nuclear energy. The current regulatory framework, which includes guidelines set forth by organizations such as the National Council on Radiation Protection and Measurements (NCRP) and the U.S. Nuclear Regulatory Commission (NRC), designates the permissible dose limit for radiation workers at 5 roentgens (R) per year.

This limit is based on extensive research that has demonstrated a safe threshold for occupational exposures, ensuring that the risks associated with potential health effects, such as cancer or radiation sickness, remain within acceptable levels. The 5R limit allows for adequate safety while accommodating the needs of professionals who work with radiation in contexts such as medical imaging and diagnostics, nuclear power plants, and research facilities.

While other choices represent various exposure levels, none align with the established regulatory limit currently deemed acceptable for annual accumulated personnel dose. Hence, the choice indicating 5R reflects the consensus of safety standards within the industry and legal framework regarding permissible exposure to radiation.