COMPUTE TOTAL DOSE
Critical Task: 031-506-2015
In this lesson you will learn how to compute total dose received by personnel operating in or crossing a
TERMINAL LEARNING OBJECTIVE:
Compute total dose.
Given information about and illustrations on the procedures for using the total dose
nomogram or the M28A1 Nuclear Calculator Set to compute the total dose of
radiation received by personnel operating in or crossing a radiation area when the
dose rate, time of stay, time of entry, and transmission factor are known.
Demonstrate competency of the task skills and knowledge by responding to the
multiple-choice test covering the computation of total radiation dose using the total
dose nomogram or the M28A1 Nuclear Calculator Set.
REFERENCES: FM 3-3, FM 3-3-1 and STP 3-54B2-SM.
In order for commanders to control the amount of radiation, they must be able to estimate how much
radiation will be absorbed operating in or crossing a contaminated area. The dose rate of radiation does
not directly determine whether or not personnel become casualties. Casualties are dependent on the total
dose received. Though this subcourse teaches the procedures for calculating total radiation dosages that
personnel may receive, the actual total dose received will be taken from dosimeter readings. If the dose
rate were constant, the total dose would simply be the product of the time in the contaminated area and
the dose rate. However, the dose rate is continually diminishing because of decay; making the
calculation more complicated.