Which practice is a direct method to minimize exposure during handling?

• A. Use shielding blocks and maintain source jackets for containment
• B. Keep source unshielded on a bench
• C. Remove all shielding to speed tasks
• D. Use uncalibrated equipment

Answer: (A)

Direct exposure during handling is reduced by placing physical barriers between the worker and the source and by keeping the source properly contained. Shielding blocks act as a barrier that attenuates radiation, so the dose reaching the worker is lowered. Keeping the source jacket intact provides containment that limits leakage and prevents radioactive material from escaping the source, reducing both external exposure and contamination risk. These measures work together as a direct way to protect you during handling because they reduce the radiation that reaches you and prevent spread of contamination. Conversely, leaving the source unshielded on a bench, removing shielding to speed tasks, or using uncalibrated equipment increases exposure and safety risks rather than reducing them.