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Registration Number

0215U009422, 0115U004026 , R & D reports

Title

Development of strength and serviceability criteria of structural steel in hydrogen environment with taking into account of their hydrogenation near defects - stress concentrators

Head

Dmytrakh Ihor, Доктор технічних наук

Registration Date

20-01-2016

Organization

Karpenko Physico-Mechanical Institute of the National Academy of Science of Ukraine

Description

The approbation and application of developed criteria of strength and serviceability of structural steels in hydrogen environment have been made for evaluation of safe operation and fracture risk assessment of pipeline systems of different use. For pipelines of different size the special diagrams for evaluation of their workability and fracture risk assessment were built, which contains of three zones: zone of safe operation, zone of operation with predicted growth of the existed crack-like defects and zone of risk of the brittle fracture. On this base the engineering assessments of safe operation of pipelines with the crack-like defects in hydrogen-contained environments of different composition have been done. In particular, the values of safe sizes of defects were calculated in depending of their shape and hydrogen concentration in the bulk of metal, i.e. depending on the hydrogenation level of pipe that gives the possibility to determine the critical state of long-term operated pipelines. Based on received data the version of the software for technical diagnostics of structural components of pipe-lines system for hydrogen transportation was improved.

Product Description

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Білий Орест Левкович
Барна Роман Андрійович
Лещак Ростислав Любомирович
Лутицький Олександер Лукич
Сиротюк Андрій Михайлович