Paragraph 4: Terms and conditions of access

Access to areas defined in accordance with articles R. 4451-24 and R. 4451-28 is restricted to workers classified in accordance with article R. 4451-57.

Access by a worker classified in an orange or red controlled zone is subject to individual authorisation issued by the employer. Access to the red controlled zone is exceptional and is recorded by name on each entry.

Unclassified workers may have access to a blue or green supervised zone and to a radon zone subject to authorisation by the employer on the basis of the individual assessment of the risk due to ionising radiation provided for in article R. 4451-52. These workers may also, for a reason justified in advance, have access to a yellow controlled zone. In such cases, the employer will implement special preventive measures,…