## Occupational Dose Limits for Radiation Workers **Key Point:** The AERB stipulates an annual occupational dose limit of **20 mSv averaged over any 5 consecutive years**, with the additional constraint that no single year should exceed **50 mSv**. This is the standard for India and aligns with international recommendations from the ICRP (International Commission on Radiological Protection). **High-Yield:** The 5-year averaging approach allows for flexibility in years of high exposure (e.g., during special projects) while maintaining long-term safety. The 50 mSv annual ceiling is a hard limit that cannot be exceeded in any single year. **Clinical Pearl:** This dose limit applies to all occupationally exposed persons, including radiologists, technicians, and nuclear medicine staff. Monitoring is typically done via dosimetry badges (thermoluminescent dosimeters or TLDs). ### Comparison with Other Dose Limits | Population | Annual Dose Limit | Notes | | --- | --- | --- | | Occupational workers | 20 mSv (5-yr avg), max 50 mSv/year | AERB guideline | | General public | 1 mSv/year | Excluding medical exposure | | Pregnant workers | 1 mSv for remainder of pregnancy | Once pregnancy declared | | Apprentices (< 18 years) | 6 mSv/year | Reduced limit for minors | [cite:AERB Safety Code on Radiation Protection] 
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