I.-It is forbidden to assign young people to temporary work at a height where the risk of falling from a height is not prevented by collective protection measures.
II-The ban mentioned in I may be waived for the use of ladders, stepladders and steps, under the conditions laid down in the second paragraph of Article R. 4323-63.
III -The prohibition mentioned in I may be waived for work requiring the use of personal protective equipment, under the conditions and according to the procedures laid down in Section III of this chapter and in Article R. 4323-61. This derogation is preceded, both within the establishments mentioned in article R. 4153-38 and in the workplace, by the implementation of the information and training provided for in articles R. 4323-104 to R. 4323-106.