Radiation Safety Course



Availability to Course Materials

Course – 30 days
Exam – 10 more days

Course Length

Approximately 28 hours


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NDT Classroom, Inc. Radiation Safety training is a completely video-based online course taught by certified trainer/radiographer 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 U.S. NRC (10 CFR 34.43) and equivalent state radiation control regulations. Completion of the course addresses the 40-hr. training prerequisite for radiography certification exams by combining 28 hours of online training with 12 hours of hands on training, and training on O&E procedures, radiographic equipment and applicable state regulations.

The course provides an understanding of the basic principles and fundamentals of radiation safety applicable to industrial radiography. Learning outcomes are assessed at the end of each lesson and a comprehensive 100-question multiple-choice final exam. The course concludes with a 100-question exam. The student must receive a passing score of 70% to be considered prepared for the formal exam from a certifying entity.

This Training:

  • Is required for individuals seeking certification as an industrial radiographer.
  • Can be used to satisfy training requirements for radiographic personnel established by the U.S. Nuclear Regulatory Commission, Agreement States and has been approved by the following certifying states: Alabama, Illinois, Louisiana, Texas, Georgia, Iowa and Maine
  • Conforms to guidance for radiographer radiation safety training specified:

    – App. A to ASNT CP-105-2011 (excluding neutron radiography)

    – U.S. NRC NUREG-1556, Vol. II

    – Part E of Suggested State Regulations (Conf. of Radiation Control Program Directors’ model ind. radiography rules)

    – Canadian Nuclear Safety Commission Regulatory Guide G-229

    – IAEA Safety Guide No. SSG-11, IAEA TEC-DOC-628

  • Includes lesson summaries and glossaries designed to help students study and pass radiographer certification exams.
  • Includes a training certificate issued upon successful completion of the course.

The training is divided into 12 lessons:

1. Atomic Structure and Types of Radiation

2. Radiation Properties and Interactions with Matter

3. Radiation Units and Terminology

4. Sources of Ionizing Radiation

5. Biological Effects of Ionizing Radiation

6. Radiation Measurement and Instrumentation

7. Protection Against Ionizing Radiation

8. Radiation Control Regulations

9. Radioactive Material Transportation Regulations

10. Radiographic Equipment (X-ray and Isotope)

11. Radiation Safety Programs and Procedures

12. Case Histories of Radiography Incidents

NOTES: Recommend Reading assignments are provided for each lesson, which are listed at the beginning of the course. Completion of the readings and 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 RSO 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.


Approved for use within approved training programs in all of the following Certifying States: Texas, Louisiana, Georgia, Alabama, Illinois, Oklahoma, Iowa & Maine. This course was designed so that students can typically retain 25% to 60% more of the information as compared to traditional classroom training.

Participants can access the course 24/7 from any computer running Google Chrome browser with an internet connection.

greyArrowEASY TO USE
Pause to take notes with ability to retake lesson quizzes as needed. Online learning gives the student complete control over their learning experience.

Audio/Video narration, demonstrations, animated graphics and video footage make even the most complex topics engaging and easy-to-understand.

Detailed video demonstrations, practice problems, and quizzes facilitate the mastery of concepts and measure content retention.

Course content was developed by Chuck Hellier with industry experts and NDT Classroom Inc. learning professional Kevin Crosby, Phd in curriculum design.

Users can contact NDT Classroom instructors by emailing info@NDTclassroom.com or calling 716-262-8870.

NDT Classroom customer support Monday through Friday 8:30 AM to 5:00 PM EST. at info@NDTclassroom.com or 716-262-8870


Lesson 1 – Atomic Stucture and Types of Radiation

Lesson 1 – Quiz

Lesson 2 – Radiation Properties & Interactions with Matter

Lesson 2 – Quiz

Lesson 3 – Radiation Units & Terminology

Lesson 3 – Quiz

Lesson 4 – Sources of Ionizing Radiation

Lesson 4 – Quiz

Lesson 5 – Biological Effects of Ionizing Radiation

Lesson 5 – Quiz

Lesson 6 – Radiation Detection Equipment

Lesson 6 – Quiz

Lesson 7 – Radiation Units & Terminology

Lesson 7 – Quiz

Lesson 8 – Radiation Control Regulations

Lesson 8 – Quiz

Lesson 9 – Radioactive Material Transportation Regulations

Lesson 9 – Quiz

Lesson 10 – Radiographic Equipment

Lesson 10 – Quiz

Lesson 11 – Radiation Safety Programs & Procedures

Lesson 11 – Quiz

Lesson 12 – Histories of Radiography Incidents

Lesson 12 – Quiz

Radiation Safety Final Exam


How much do I need to know before taking this course?

You don’t need to have any background in NDT to take this course. It will prepare you to take the practical training needed to become certified by your employer.

Who should take this course?

Anyone interested in expanding their welding career to examine welds and other types of materials and products.

How long do I have to complete this course?

You have 30 days to take the course and 10 days to complete the exam.

Does this course include a completion exam?

Yes, you will not only take quizzes after many of the chapters, there is a final exam after the successfully complete the course.

Do I need to purchase any other materials?

No, all reading material is available online.

Does the time I spend in this course count towards the recommended number of training hours per NRC and State requirements?

The Certifying states: Yes, all of the time you spend in the course, any reading time and hands on practical training all count towards the recommended number of training hours.

Can I use these hours for recertification?

Yes, you can use this time towards your recertification.

What platforms and devices can I use to view the courses?

You must be connected to the internet to access our online courses. We support the most recent versions of Google Chrome, Firefox, Safari, and Internet Explorer. Courses can be viewed on desktops, laptops, tablets, and mobile phones. Note, however, that a high speed internet connection and large screen offer a better user experience.

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