How can a radiation worker determine their lifetime cumulative effective dose (CumEfD) limit?

• A. Their age in years x 5 mSv
• B. Their age in years x 10 mSv
• C. Their age in years + 10 mSv
• D. Their age in years / 10 mSv

Answer: (B)

The lifetime cumulative effective dose (CumEfD) limit for a radiation worker is calculated using the formula that reflects the regulatory guidelines set forth by organizations such as the National Council on Radiation Protection and Measurements (NCRP). The correct calculation is based on multiplying the worker's age in years by 10 mSv, which establishes a safe limit for cumulative exposure throughout a person's career in radiation-related work.

This formula effectively accounts for the risk associated with long-term exposure to radiation and helps ensure that radiation workers remain within safe exposure limits. The choice of 10 mSv per year is based on the understanding that as age increases, the potential for accumulating risk from radiation exposure also increases, which necessitates a higher cumulative dose capacity.

This approach supports the goal of minimizing radiation-induced health risks while allowing workers to perform their duties safely within the established guidelines.