Robotic Safety and Risk Assessment: Performa Risk Assessment and Derive a PL

What are the two scenarios involving a moving robot and untrained operators?

The incidents include a free space collision and a trapping incident involving a moving robot, both with a force of 50N.

Answer:

The incidents involve a free space collision and a trapping incident with a force of 50N.

Two scenarios involving a moving robot and untrained operators highlight the importance of proper training and safety measures. In both incidents, the force involved was 50N. In the first scenario, an operator reached into a work cell while the robot was moving, resulting in a free space collision. The second scenario involved an operator's hand being trapped between the robot and an instrument tray while the robot was moving into the tray.

These incidents underscore the need for better operator training to avoid such accidents in the future. Implementing safety measures such as emergency stops, presence detection devices, and limiting the robot's motion can help prevent similar incidents from occurring. Additionally, the use of safety guards and limiting the robot's force can also contribute to a safer working environment.

When conducting a risk assessment, it is crucial to consider the severity of potential harm, the frequency of exposure to the hazard, and the possibility of avoiding the hazard. These factors are essential in determining the Performance Level (PL) of safety-related control systems. More specific details would be needed to derive a specific PL based on the incidents mentioned.