Where is a TLD badge required to be worn?

• A. In any location where a dose may be received
• B. On the wrist
• C. Anywhere a dose may be received, worn on the trunk between waist and shoulders
• D. On the head

Answer: (C)

A TLD badge is used to monitor whole‑body external radiation exposure, so it should be placed where it best represents the dose to most of the body. Wearing it on the trunk between the waist and shoulders achieves that by placing the badge on the central part of the body, typically at chest height, which reflects the average whole‑body dose after shielding from clothing and movement. Wearing a badge on the wrist or head would only measure doses at those specific sites and could misrepresent the overall body exposure. If there’s potential for higher exposure to extremities or the eyes, separate dosimeters are used for those sites, but the standard whole‑body reading comes from the trunk placement.