Which device measures the total dose or exposure of radiation accumulated by the wearer?

Which device measures the total dose or exposure of radiation accumulated by the wearer?

• A. Dosimeter
• B. Geiger Counter
• C. RADIACS
• D. Survey Meter

Answer: (A)

The key idea is personal dosimetry—the device that records how much radiation a person has actually absorbed over time. A dosimeter is worn by the worker and accumulates the total dose during a period; you read it after exposure to determine the cumulative dose, ensuring exposure stays within safety limits. Different dosimeter types exist, like film badges, thermoluminescent dosimeters, optically stimulated luminescent dosimeters, and electronic personal dosimeters, all serving the same purpose of recording total exposure. In contrast, a Geiger counter measures the current radiation rate (counts per minute) at a location, not the accumulated dose for an individual. A survey meter similarly assesses ambient radiation levels in an area rather than an individual’s lifetime exposure. RADIACS refers to radiation-detection equipment used for measurements, often in surveys or dose-rate assessments, rather than the worn device that sums an individual’s exposure. So, the dosimeter is the device that measures the total dose accumulated by the wearer.

The key idea is personal dosimetry—the device that records how much radiation a person has actually absorbed over time. A dosimeter is worn by the worker and accumulates the total dose during a period; you read it after exposure to determine the cumulative dose, ensuring exposure stays within safety limits. Different dosimeter types exist, like film badges, thermoluminescent dosimeters, optically stimulated luminescent dosimeters, and electronic personal dosimeters, all serving the same purpose of recording total exposure. In contrast, a Geiger counter measures the current radiation rate (counts per minute) at a location, not the accumulated dose for an individual. A survey meter similarly assesses ambient radiation levels in an area rather than an individual’s lifetime exposure. RADIACS refers to radiation-detection equipment used for measurements, often in surveys or dose-rate assessments, rather than the worn device that sums an individual’s exposure. So, the dosimeter is the device that measures the total dose accumulated by the wearer.