How is the cumulative whole body dose limit calculated for occupational exposure?

The cumulative whole body dose limit for occupational exposure is calculated as 1 rem times the individual's age in years, which reflects a standard approach to limit exposure based on a person's lifetime accumulation of radiation. This calculation takes into account that as individuals age, they have had more time to accumulate radiation exposure, and thus it is deemed acceptable for them to have a higher cumulative limit in alignment with their years of work.

Additionally, converting those units into milliSieverts (mSv), the limit can also be represented as 10 mSv times age in years, equating to the same safety principles but in more commonly used international units for radiation exposure. This form of the answer reflects the combined and equivalent values used in various regulations and guidelines for occupational radiation safety.

The proposed answer captures the concept that a person's cumulative exposure limit increases with age, accommodating the additional risk that comes with longer occupational exposure times. Hence, the reasoning behind this method of calculation emphasizes the alignment of body dosage limits with age, providing a clear and mathematically sound guideline for ensuring safety in occupational settings exposed to radiation.