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Ionizing Radiation

Radiation is part of our lives. We use radioactive materials for beneficial purposes, like generating electricity, conducting security scans, inactivating biological and harmful microorganisms in food, and diagnosing and treating medical problems. For example, millions of people receive radiation in the form of X-rays every year. Although radiation offers many benefits, exposure to it can also threaten our health and the quality of our environment. We cannot eliminate radiation. But we can reduce the risks by controlling our exposure to it.

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Learning Objectives

Define ionizing radiation.
Identify types and sources of ionizing radiation.
Recognize the risks and health effects of exposure to radiation.

Describe basic practices to maintain radiation exposures "as low as reasonably achievable".
Recall measures used to control radiation doses in the workplace.
Recognize what to do in the event of an emergency involving ionizing radiation.

Course Outline

1. Introduction
1. Welcome
2. Introduction
3. Learning Objectives
2. Definition
1. What Is Ionizing Radiation?
2. Radiation Concepts
3. Types of Radiation
1. Learning Activity – Types of Radiation
2. Types of Radiation
3. Learning Activity – Radiation Penetration
4. Sources of Radiation
1. Sources of Radiation
2. Sources of Radiation (continued)
3. Occupational Exposure
4. Knowledge Check: Sources
5. Exposure Limits and Health Effects
1. Occupational Exposure Limits
2. Potential Health Effects
3. Potential Health Effects: Exposed Individual
4. Potential Health Effects: Future Children
5. Potential Health Effects: Prenatal Effects
6. Knowledge Check: Health Effects
7. Risks of Working Around Radiation

6. ALARA Program
1. ALARA Program
2. Minimizing Time
3. Increasing Distance
4. Shielding
5. Learning Activity – As Low As Reasonably Achievable
7. Controlling Exposure Levels
1. Radiological Controls
2. Radiological Controls (continued)
3. Monitoring Exposure
4. Knowledge Check: Controls
8. Emergencies
1. Emergencies
2. Emergency Evacuation
3. Knowledge Check: Emergencies
9. Conclusion
1. Summary
2. Conclusion