According to NCRP 116, the occupational cumulative dose limit increases with age. Which statement is consistent with this?

According to NCRP 116, the occupational cumulative dose limit increases with age. Which statement is consistent with this?

• A. The limit increases with age
• B. The limit is fixed regardless of age
• C. The limit decreases with age
• D. The limit is not related to age

Answer: (A)

The main idea here is that the total amount of radiation a worker may accumulate over their career is not a fixed number—it grows with age. NCRP 116 sets an age-dependent cumulative dose limit, meaning the allowable lifetime dose increases as a person gets older. Why this fits: while the annual dose cap stays the same, the lifetime or cumulative limit is structured so that older workers can reach a higher total before hitting the limit. This reflects the way risk is assessed over a person’s lifespan and the practical reality that older workers have fewer remaining years in which exposure could contribute to long-term effects, so the policy allows more dose in those later years without compromising the overall protection goal. The other statements conflict with this age-adjusted approach. Saying the limit is fixed regardless of age, or decreases with age, or isn’t related to age, would ignore the NCRP 116 principle that lifetime exposure is moderated by a worker’s age.

The main idea here is that the total amount of radiation a worker may accumulate over their career is not a fixed number—it grows with age. NCRP 116 sets an age-dependent cumulative dose limit, meaning the allowable lifetime dose increases as a person gets older.

Why this fits: while the annual dose cap stays the same, the lifetime or cumulative limit is structured so that older workers can reach a higher total before hitting the limit. This reflects the way risk is assessed over a person’s lifespan and the practical reality that older workers have fewer remaining years in which exposure could contribute to long-term effects, so the policy allows more dose in those later years without compromising the overall protection goal.

The other statements conflict with this age-adjusted approach. Saying the limit is fixed regardless of age, or decreases with age, or isn’t related to age, would ignore the NCRP 116 principle that lifetime exposure is moderated by a worker’s age.