About the Author

Heinz Peter Schmitz is Translator and official in charge of documentation at the FDBR: Fachverband Dampfkessel-, Behalter- und Rohrleitungsbau e.V. (Association of Steam Boiler, Pressure Vessel and Piping Manufacturers), Dusseldof, Germany. Jochen Mussmann is Welding engineer in industry and lecturer in the FDBR (Association of Steam Boiler, Pressure Vessel and Piping Manufacturers). Manger of Ingenieurburo fur Schweisstechnik und Qualitatsmanagement, (Engineering office for welding technology and quality management), Meerbusch , Germany