ABSTRACT

Pipelines are used for transporting gas and liquid fluids in very wide areas and at very different pressures and temperatures. When working on pipelines, a solution is sought to determine the optimum pipe diameter, determine the optimum insulation thickness and take the stresses in the most economical way. Pipe design mainly depends upon stress analysis. Process piping and power piping are checked by pipeline stress engineers to verify that the positioning, nozzle loads, supports are correctly positioned and selected, and that the permissible pipe is not exceeding the permissible values for different loads. Pipelines are governed by Industrial / International Codes and Standards. In this study, in reference to ASME B31.1 code which is one of these standards, the study examines the elastic properties of the steam turbine piping on the powership, the causes and effects of the loads on the equipment nozzle and the pipe displacements. At the same time, methods of calculating pipe stresses were calculated, which is a finite element pipe stress analysis program, and for two different pipe designs for susteined loads, occasional loads and thermal loads on the steam cycle piping on the power ship. As a result of the investigation, it was determined that the pipe design depends on the pipe stress analysis, and analysis with the aid of finite element pipe stress analysis programs has provided a clear picture of the stresses on the pipe.