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  | ![]() DOE-HDBK-1130-98 
I. 
MODULE INTRODUCTION 
A. Self Introduction 
1. 
Name 
2. 
Phone Number 
3. 
Background 
B. 
Module Overview 
This module is designed to inform the worker about radioactive contamination and discuss 
methods used to control the spread of contamination. 
C. Objectives Review 
D. Introduction 
Contamination control is one of the important aspects of radiological protection. Using proper 
contamination control practices helps to ensure a safe working environment. It is important for 
all employees to recognize potential sources of contamination and to use appropriate 
contamination control methods. 
II. 
MODULE OUTLINE 
A. Comparison of Ionizing Radiation and Radioactive Contamination 
1. 
Ionizing radiation 
Energy (particles or rays) emitted from radioactive atoms or generated from machines such 
as X-ray machines that can cause ionization (e.g., gamma rays, X rays, beta particles, and 
other particles capable of ionizing atoms). 
2. 
Radioactive contamination 
Radioactive material is material that contains radioactive atoms. When radioactive material is 
properly contained, it still emits radiation and may be an external dose hazard, but it is not a 
contamination hazard. When radioactive material escapes its container, it is then referred to 
as radioactive contamination. 
3. 
Radiation is energy; contamination is a material. 
B. 
Types of Contamination 
Radioactive contamination can be fixed, removable, or airborne. 
1. 
Fixed contamination is contamination that cannot be easily removed from surfaces. 
a. 
It cannot be removed by casual contact. 
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