Every larger plant has its own fire brigade and thus ensures immediate firefighting service on site - so to speak, the mobile fire extinguisher. Most of these plants are located just outside the city and by the time a fire brigade arrives, the first sources of fire can be brought under control. For example, first aid can be provided immediately in the event of an explosion and emergency care can be maintained until further helpers arrive. The first two of six fire brigades of the self-contained collection series are at the start.