Issues of working capacity monitoring and rational design of flange joints

On the example of the analysis of modern engineering solutions, questions of rational design of flange joints of fittings of the pipelines having big technological misalignments are considered. It is shown that flange joints in many cases define operability of control valves of pipeline transport. The large amount of metal spent for production of flanges and their responsibility is demanded by applications of rational designs and evidence-based methods of calculation. Exact combination of holes under attachment bolts of pipeline fittings and the pipeline gives the chance to reduce the sizes and to limit bend of spindle of the control device that increases efficiency and reliability of pipeline transport. When designing flange joints, the value of eccentricity must be limited by the admissible size of the arrow deviation.