No abstract

The articie consider the problem of increasing technological efficiency of the pipelines of ship systems at the design stage. The ways of manufacturing and assembling the ship pipelines without measuring in situ have been presented. There has been done the analysis of standardized deviations controlled in the process of pipe manufacturing according to the drawings. The article reveals the reasons making inappropriate the technology of manufacturing pipes according to the project documentation by the method of bending. The reasons of deviation development and amount of deflection from structural dimensions that arise during the pipe manufacturing have been determined.

The article highlights the method of the ship systems pipelines manufacturing according to the drawings, regardless of the readiness of the object under construction. There has been emphasized the effectiveness of the method, which resulted in the reduced construction time of the vessel without additional operations, except for design work. The study aimed to eliminate the reasons limiting the application of the manufacturing method based on the design information, regardless of the readiness of the object under construction has been carried out. A scientific approach to determining the clearances sufficient for mounting pipelines, where the pipes are manufactured according to design dimensions, is presented. The sizes of tolerances and the reasons for setting them are analyzed and the measures on reducing or eliminating them are proposed. There is given the estimation of gaps big enough to fit any pipeline canal under consideration into the allocated corridors. The analysis of route deviations under mounting the ship pipeline systems at the design stage makes it possible to reduce the assigned clearances and to manufacture the pipes into the reserve later. The calculation and methodological base used in the design of pipeline routes for ship systems has been developed. The software AST-SUDOTRUB was developed to calculate the pipeline deviations that occur due to the errors in pipe manufacturing. The software automatically checks the sufficiency of controlled gaps in a particular point of the route studying the pipe deviation in the gap area. The study results prove the need to indicate the date of the start of routing in calculations and give the designer a tool for rational assigning the gaps