Subsection 1: Collective protection measures

I.-The employer shall implement measures to reduce the risks associated with exposure to ionising radiation when the results of the risk assessment show that the exposure of workers is likely to reach or exceed one of the levels mentioned in I of Article R. 4451-15. II-The measures mentioned in I are based in particular on : 1° The implementation of other work processes that do not expose or result in…

When the measures implemented in application of Article R. 4451-18 do not make it possible to avoid a risk of contamination by radioactive substances or of significant aerosol suspension or gaseous release, the employer shall in particular implement measures aimed at : 1° Limiting the quantities in the workplace; 2° Improving radiological cleanliness by implementing technical and organisational means to contain contamination, in particular by confinement and aspiration at source…

The definition of collective risk prevention measures takes into account other occupational risk factors identified in the workplace, particularly when their combined effects are likely to aggravate the effects of exposure to ionising radiation.