ABSTRACT
If hazards arising from machine tools cannot be completely eliminated by design, protective devices must be provided. Separating guards prevent people from accessing or entering the danger area; in addition, they retain any parts that may have been released in the work area. An attempt shall be made here to supplement the currently purely intuitive (qualitative) consideration of the protection effects by a probabilistic scaling of the risk reduction effects. By scaling these effects, the Pareto principle can be applied: achieving the best possible benefit with minimal effort. This procedure is indispensable for machine tool manufacturers to master economic risks in global competition. Since there is no plausible risk model in current safety standards for machine safety with which risk reduction effects can be scaled, a simplified quantitative risk model is presented in this paper for this purpose (and two further papers are presented at ESREL 2018).
