Path planning is ubiquitous in robotics. Within ROS, the main path planning solutions are in the OMPL library. However, they do not provide a validated trajectory, that is, a trajectory proven to satisfy the constraints (joint limits, obstacles, etc.) at any time while taking into account the uncertainties of a setup, as per required in critical processes as in the nuclear industry. The VOLGA project fills this gap by using interval-based computations. The project will develop a generic path planning tool and test it on a challenging industrial application, performed with a robotic additive manufacturing cell.