What is the lifetime cumulative effective dose limit for a 35-year-old radiation worker?

What is the lifetime cumulative effective dose limit for a 35-year-old radiation worker?

• A. 100 mSv
• B. 150 mSv
• C. 175 mSv
• D. 350 mSv

Answer: (D)

Lifetime cumulative dose limits are set to balance long-term cancer risk with practical work needs. For occupational exposure, the rule is to accumulate about 10 mSv for each year of age, up to a total lifetime cap of 1,000 mSv. This means you multiply the person's age by 10 mSv to estimate the current lifetime limit, provided the cap hasn’t been reached. At age 35, that calculation gives 350 mSv. This reflects the planned upper bound the worker should not surpass over their entire career, while annual limits still apply each year (typically 50 mSv averaged over 5 years, with no more than 100 mSv in any single year).

Lifetime cumulative dose limits are set to balance long-term cancer risk with practical work needs. For occupational exposure, the rule is to accumulate about 10 mSv for each year of age, up to a total lifetime cap of 1,000 mSv. This means you multiply the person's age by 10 mSv to estimate the current lifetime limit, provided the cap hasn’t been reached.

At age 35, that calculation gives 350 mSv. This reflects the planned upper bound the worker should not surpass over their entire career, while annual limits still apply each year (typically 50 mSv averaged over 5 years, with no more than 100 mSv in any single year).