DIN 18009 Part 1 describes the fundamentals of the system for the selection of design fire scenarios. The working steps can only be regarded as indications for a performance-based design. This framework is supposed to ensure an adequate and uniform application of the variety of internationally available knowledge and methodologies.
In 2008, the DIN working committee NA 005-52-21 AA started its work to standardize fire safety engineering methods in Germany. The second subdocument DIN 18009 Part 3 shall cover the design fire scenarios and design fires. Some ideas related to methodology, requirements and scenario-based design are presented in this article.