Abstract: Based on the two failed start-up of a steam turbine in a domestic project, the reasons for the problems were analyzed from many aspects, the construction, engineering design and start-up plans were correspondingly adjusted and modified according to the final analysis conclusions, and the steam turbine was started up successfully at the third try. This paper points out the items to be noted during the design of steam turbine inlet pipe, the installation of pipe support and prior to the start-up of steam turbine.

Key words: steam turbine, start-up, stress analysis