I.-The employer shall periodically ensure that the level of external exposure in the workplaces adjoining the areas defined under Article R. 4451-24 remains below the levels set in Article R. 4451-22.
II -The employer shall also check, where necessary, the radiological cleanliness of:
1° The premises referred to in I;
2° The work equipment that is to be removed from the areas defined in I, where this is likely to be contaminated.
III-These periodic inspections are carried out by the radiation protection advisor.