Abstract: This paper makes a comparison on the primary characteristics between the wet steam turines for nuclear power plant and the Conventional tubines.It points out that the steam expansion process of wet steam turbine will cause problems, such as the erosion of blades, power loss and large size of blades etc. for the design and manufacture. Especially, the problem of erosion caused by wet steam with high density in the high pressure cylinder has not been resolved yet. In order to solve all of these problems and to perfect the wet turbine technology, it is necessary to start early our own research programme, while the equipment and techonology are introdaced. The research programme would include the measurement technigue for wet stem (for example, the determination of the drop size) the simulating test on wet steam expansion and the model test for wet steam tubines. On the basis of study; a comp te pIan of nuclear power turbine calculation and design will be instituted.

Key words: Friction pair, Interface pressure, Real contact area, Thermal flux