Radiation Safety

NDTclassroom.com's Radiation Safety training is a completely video-based online course taught by Walt Cofer. The course is intended as initial or refresher training for individuals pursuing industrial radiographer radiation safety certification, and for anyone interested in understanding the basic principles and applications of industrial radiation safety. The course addresses required training topics for radiographic personnel specified in federal (10 CFR 34.43) and equivalent state radiation control regulations, as well as the topics listed in Appendix A to ASNT CP-105-2011 (excluding neutron radiography). It addresses the 40-hr. training prerequisite for the ANST IRRSP exam and equivalent radiographer certification exams administered by state radiation control agencies. The course provides an understanding of the basic principles and fundamentals of radiation safety applicable to industrial radiography. Learning outcomes are assessed using written quizzes at the end of each lesson and a comprehensive final exam. This course includes multiple choice questions to help the student prepare for a formal certification exam. A 100-question multiple choice exam is given at the conclusion of the course. The student must receive a passing score of 70% on the final exam to be considered prepared for the formal exam from the certifying entity.
The training is divided into twelve lessons:
Atomic Structure and Types of Radiation
Radiation Properties and Interactions with Matter
Radiation Units and Terminology
Sources of Ionizing Radiation
Biological Effects of Ionizing Radiation
Radiation Measurement and Instrumentation
Protection Against Ionizing Radiation


Radiation Control Regulations
Radioactive Material Transportation Regulations
Radiographic Equipment (X-ray and Isotope)
Radiation Safety Programs and Procedures
Case Histories of Radiography Incidents
This training:
• Is required for individuals seeking certification as an industrial radiographer
• Satisfies training requirements for radiographic personnel established by the U.S. Nuclear Regulatory Commission and Agreement States
• Conforms to guidance for radiographer radiation safety training specified in Appendix A to ASNT CP-105-2011 (excluding neutron radiography), Part E of “Suggested State Regulations for Controlling Radiation” – the model radiography rule published by the Conference of Radiation Control Program Directors, Inc., ANSI Standard No. N536, and IAEA Safety Guide No. SSG-11
• Includes IRRSP exam study guidance designed to help students study and pass a state or ASNT radiographer radiation safety exam
• Includes a certificate of completion provided upon successful completion of the course
Please click on the video to the right to view an introduction.
Note: There is RECOMMENDED READING assigned at the beginning of the course. The completion of these assignments in addition to self-study is strongly encouraged and will add to the overall training benefit and time to be credited. It will also better prepare the student for the practical/hands-on session. It is recommended that the student keep a log of self-study time. It is also recommended that the applicable Radiation Safety Officer be involved and confirm that the reading and self-study assignments have been completed. This should become a part of the student’s training records, which may become part of a radiographer certification exam application.


Your Instructor


Walt Cofer
Walt Cofer

Course Curriculum


  Module 1
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  Module 3
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  Module 4
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  Module 5
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  Module 6
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  Module 7
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  Module 10
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  Module 11
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  Module 12
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  Module 13
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