Which formula is used to find the permissible accumulated dose for an individual?

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The formula used to find the permissible accumulated dose for an individual is based on a person's age, specifically using the expression 5(N-18), where N represents the person's age in years. This formula reflects the guidelines set by health and safety regulations regarding exposure to radiation.

According to these guidelines, individuals are permitted to receive a certain amount of radiation based on their age, recognizing that as people age, they may have a slightly increased capacity to handle accumulated doses of radiation. The value of 5 signifies that for each year of age beyond 18, an individual is permitted to accumulate an additional 5 rems (which is a unit of radiation exposure). Therefore, for a 30-year-old, the permissible dose would be 5(30-18) = 60 rems.

This method of calculating accumulated dose is a preventive approach to ensuring that individuals do not exceed recommended safety limits, which is vital in minimizing health risks associated with radiation exposure over the course of a lifetime. Understanding this formula is essential for professionals working in environments where radiation exposure is a concern, as it underpins the principles of radiation safety and protection.