The provisions of this section apply to the actions referred to in 2° of Article L. 1333-1 and to the decisions referred to in Article L. 1333-3 to prevent or reduce a risk associated with a radiological emergency. These decisions and actions are aimed in particular at acting on :
1° The source of ionising radiation in order to stop or reduce the emission of radiation and the dispersion of radionuclides;
2° The environment in order to avoid or reduce contamination by radioactive substances;
3° People, in order to avoid or reduce exposure and to organise care for victims.