Free theory test: ADR Radioactive
Class 7-ADR
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How the official exam works
15
questions
3
errors allowed
75
minutes
480
kroner · Statens vegvesen
An example from the question set
What characterizes alpha radiation?
Alpha radiation consists of helium nuclei (2 protons and 2 neutrons) emitted from unstable atomic nuclei. Alpha particles are relatively large and heavy, giving them short range and low penetrating ability.
Alpha radiation can be stopped by a sheet of paper or the outermost layer of skin. External irradiation from alpha sources is therefore normally not dangerous. However, alpha radiation is extremely dangerous when inhaled or ingested, because it deposits all its energy in a small area of tissue and can cause severe cell damage.
In ADR transport, it is important to prevent contamination and inhalation of alpha emitters.
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Frequently asked questions
How many errors can you have on the ADR class 7 exam?
You can have a maximum of 3 errors out of 15 questions on the ADR class 7 exam (7-ADR). You need at least 12 of 15 correct to pass at DSB.
How long does the ADR class 7 exam take?
You have 75 minutes for the ADR class 7 exam at DSB. If you take the combined exam (G-7ADR), the 135 minutes for the basic course are added, giving 210 minutes in total on the same day.
Can I take the ADR class 7 exam without the basic course?
No. The ADR basic course (G-ADR) is the mandatory foundation for the class 7 specialization. Most candidates take the basic course and class 7 on the same exam day as a combined exam (G-7ADR). Taking only the class 7 exam is relevant only if you already hold a valid ADR basic certificate.
How long is the ADR class 7 specialization valid?
The ADR competence certificate with class 7 specialization is valid for 5 years from the date of issue. Before it expires you must pass renewal exams for both the basic course and the class 7 module to retain the qualification.
Which ADR specialisations are there?
ADR training consists of a basic course (grunnkurs) and three specialisation courses: tank, class 1 (explosives) and class 7 (radioactive material). This test covers the class 7 (radioactive material) specialisation, which builds on the basic course.
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