Which of the following statements is consistent with the described dosimetry policy for pregnant workers entering zone 2 or 3?

• A. They Must Wear TLD And EPD On The Trunk Within 15 Cm Of Each Other
• B. They Must Wear No Dosimeters
• C. They Must Wear A Single Dosimeter On The Ankle
• D. They Must Notify Supervision Only

Answer: (A)

The idea being tested is how fetal dose monitoring is handled for pregnant workers in higher-radiation zones. The recommended approach is to wear both a thermoluminescent dosimeter (TLD) and an electronic personal dosimeter (EPD) on the trunk, with the two placed within about 15 cm of each other. This setup gives you two complementary measurements: the TLD records the total dose over a period, providing a dependable cumulative history for regulatory and medical review, while the EPD gives real-time dose information and alerts if the dose rate becomes high. Placing both devices on the trunk near the abdomen makes the readings most representative of the fetus’s exposure, since that area is closest to where fetal dose accumulates and is affected by shielding and body geometry. Keeping them close together reduces variability caused by moving around or different body locations, and it ensures both devices track the same exposure environment.

If you didn’t wear dosimeters, there would be no formal record of the exposure to protect the fetus. A single dosimeter on the ankle wouldn’t reflect torso or abdominal dose accurately and would misrepresent fetal exposure. Merely notifying supervision doesn’t provide any quantitative monitoring.