Wall protection strategies for DEMO plasma transients

•Preliminary design of DEMO first wall 3D surface is presented.•Steady state and controllable perturbations are preented,evaluating the radiated HF density on the wall and the charged particle power.•Different plasma-wall contact phases have been analysed for a list of foresseable and unforeseeable transients.•3D field line tracing codes were employed to analyse and design discrete high heat flux components surfaces.