Approximately every 5 to 7 years. The 2015 version received an amendment in 2020. The next full revision is expected no earlier than 2027.
If you manufacture cranes for the European Economic Area (EEA), compliance is mandatory. However, its influence has spread globally. Engineering firms in the US, China, and India often request the as a reference for international projects (e.g., offshore cranes or container handling). en 13001-1 pdf
Once you have the official PDF, navigation is critical. The document is dense. Here is your roadmap: Approximately every 5 to 7 years