Which device is used to monitor occupational radiation exposure by recording cumulative dose?

• A. Dosimeter
• B. Geiger counter
• C. Thermometer
• D. Calorimeter

Answer: (A)

Tracking cumulative radiation exposure relies on a dosimeter, which is designed to accumulate and record the total dose a worker receives over a period. By wearing or using it, the device stores dose information that can be read later to ensure exposure stays within safety limits set by regulations. A Geiger counter detects and measures radiation levels in real time, but it doesn’t keep a running record of total dose over time. Thermometers measure temperature, and calorimeters measure heat; neither provides information about radiation exposure.