COLLECT AND REPORT TOTAL RADIATION DOSE INFORMATION
Critical Task: 031-503-4003
In this lesson, you will learn about dosimeters, how they are charged, and how to collect and report a
TERMINAL LEARNING OBJECTIVE:
You will collect and report total radiation dose.
You will be given information about and illustrations of radiation exposure
information for tactical units and the procedure for monitoring and guiding the
reading, consolidating, and reporting of radiation dosages.
You will demonstrate competency of the task skills and knowledge by responding
to the multiple-choice test covering procedures required to collect and report total
The material contained in this lesson was derived from FM 3-3-1,
STP 3-54B2-SM, and TM 11-6665-214-10.
Dosimeters are radiation detection, indication, and computation (RADIAC) meters that measure the total
dose of nuclear radiation (gamma rays) received by an individual. This lesson will help ensure that the
total dose information is properly collected, reported, and used by the commander.
PART A: IDENTIFY THE IM-93/UD, IM-93A/UD, AND IM-147/PD
2-1. General. In order to understand the function of dosimeters, you must be able to describe their
purpose, characteristics, principles of operation, and total-dosage range.
2-2. Purpose. Dosimeters are designed to measure the total dose of nuclear radiation received by an
individual. Dosimeters are RADIAC meters that measure the cumulative exposure to a short duration of
high-intensity gamma radiation. Gamma radiation is pure energy that travels through space in a straight
line with the speed of light. Gamma radiation is invisible, and it interacts with the human body causing
damage to tissues and blood-forming cells. It is these effects on the body that are of significant concern
to the commander. The commander must know the total dose of nuclear radiation received by individuals