Abstract
Damage for Welding Fine HAZ Parts of Boiler Piping (Type N Damage) loaded internal and bending Force at one time is needs High Accuracy Residual Life Assesment, but can't clear that's Mechanism now. So for the purpose of Deveropment of High Accuracy Residual Life Assesment, we developed of burst equipment that simulated actual Boiler size for welding parts of Boiler Piping of re-created Type IV Damage of Serviced Boiler at first time in Japan. For Three Years ( About Twenty thousands Hours), The Effect of loading Internal and Bending Force at one time. The cracks generate from Welding Fine HAZ Parts and Welding Parts of Boiler Piping and Its Piping was burst. We succeeded to re-create Burst Circumstance of Serviced Boiler.
