Module 1: Radiological Fundamentals
(Insert facility-specific information.)
Range in air is very far.
Easily can go several hundred feet.
High penetrating power due to lack of charge
(difficult to stop).
Plastic (high hydrogen content).
Whole body exposure.
The hazard is generally external.
Insert facility-specific information.
Units of Measure for Radiation
1. Roentgen (R)
a. Is a unit for measuring external exposure.
b. Defined only for effect on air.
c. Applies only to gamma and X rays.
d. Does not relate biological effects of radiation to the human
e. 1 R (Roentgen) = 1000 milliroentgen (mR).
EO7 Identify the units used
to measure radiation.
2. Rad (Radiation absorbed dose)
a. A unit for measuring absorbed dose in any material.
Absorbed dose results from
energy being deposited by
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