The head of the user undertaking shall organise, with the heads of any outside undertakings that he considers it useful to invite, periodic inspections and meetings, at intervals that he shall define, in order to ensure, depending on the risks or when circumstances so require:
1° either general coordination within the user undertaking;
2° or coordination of the prevention measures for a given operation;
3° or coordination of the measures made necessary by the risks associated with interference between two or more operations.