REPAIR TECHNOLOGY OF PRODUCT PIPELINES OPERATED IN A HYDROGEN SULFIDE ENVIRONMENT

Introduction. The article discusses the improved repair technologies of pipeline material saturated with hydrogen sulfide, which should replace conventional methods that ignore operational features in a sulfide environment. aim this work is to develop technology for repairing pipelines operated environment by manual arc welding using consumable electrode. Materials and methods. Full-scale experiments were carried out achieve goals. A section an industrial was selected as test sample, whose service life at hydrocracking unit oil refinery equals about 10 years. Degassing, i.e., removal diffusion atomic from metal area, electric heating devices. surfacing pipe edges layer austenitic or ferritic welding. Results. developed electrode involves degassing having same composition parent material. Here, positive effect lies fine distribution non-metallic inclusions remolten favorable change their shape chemical composition. Conclusions. efficiency achieved taking into account properties transported product its influence on process. When developing environment, such basic measures preliminary metal, surfacing, heat treatment are substantiated.