TÜV Rheinland Group is currently taking care of more than 5,000 steam boiler systems from manufacturing and operation to providing expert reports in cases of damage insofar as this is necessary. The public authorities recognized the need for statutory monitoring of these systems in the middle of the 19th century after a number of serious accidents had occurred. Today, steam boiler systems are among the safest commercially used systems. Not least thanks to the TÜV experts.