DNV-OS-E401 sets requirements and guidance for the design of steel and aluminum helicopter decks on offshore units and installations. It covers complete deck structures, including substructures, hull connections, and reinforcements.
The standard addresses material selection, design loads, structural strength, connections, safety nets, tie-down points, fire and personnel safety, helicopter deck markings, lighting, instrumentation, and obstacle-free approach and takeoff areas. It also describes requirements for DNV certification and classification, including HELDK, HELDK S, and HELDK SH class notations.
Application Scope: Design, construction, installation, certification, and classification of helicopter decks on offshore units and installations.
