This document describes the capabilities and responsibilities required for the qualification of the operators on the field of the Additive Manufacturing technologies dealing with metallic parts production, specifically for the employment of DED-Arc/M. This document defines criteria for the theoretical and practical assessment of personnel operating DED-Arc/M machines. The activities and procedures foreseen to be performed by the DED-Arc/M operator are also part of the standard. This document is intended to provide an outline for qualification of machine operators in general industrial applications.