In a few days' time, machine and plant manufacturers will in all probability have to say goodbye to the old EN 954-1 safety standard for good. The successor standard EN ISO 13849-1 (Safety of machinery - Safety-related parts of control systems) has been in force since mid-2007. Since then, there has been a "presumption of conformity" for EN 954-1, but this expires on December 31. With this transitional period of several years, the responsible EU Commission wanted to make it easier for those affected to switch from the old to the new safety standard and give them enough time to complete the necessary "homework".