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Ilonka van Gorkum has to demolish a structure, together with her colleagues. Ilonka is the holder of the werkvergunning (work permit). The werkvergunning (work permit) is valid for one day.
What is obligatory?

Which statement is correct?

You have to work in a confined space. Measurements show that the oxygen concentration is 18%.
What do you need to do to be able to work safely?

Match the activities to the correct eye and face protection devices.

What does this sign mean?

You have to inspect the raised roof edge of an office building. The building has five storeys. There is no roof edge protection on the flat roof.
How can you perform this inspection safely?
Several answers can be correct.

You have to repair a gas pipe in the crawl space of a flat. The crawl space smells very stuffy and is hot and damp. You do not trust it, and you decide not to do the work.
Who do you need to inform?

You are going to hack out cement joints in an outside wall at a height of 10 metres. The work will take the whole week. The sound level is 75 dB(A).
Which measures do you need to take to be able to work safely?
Several answers can be correct.

Bert works at a company site. Bert is working alone and there is a lot of noise. He thinks he heard the signal for a gas alarm. He is not sure.
What does Bert need to do?

Why do you always need to unwind a cable reel (extension cable) fully?