Analysis of numerical modeling of steady-state modes of methane-hydrogen mixture transportation through a compressor station to reduce CO emissions.

This study presents a mathematical model to evaluate the performance of gas pipelines during hydrogen injection in a gas pipeline-compressor station. The developed model presents the calculation of methane-hydrogen mixture (CH/H) transportation through the compressor station, where the compensation of pressure drops in the mass and energy balance takes place. Simultaneously, in the operation of the centrifugal blower system of gas compressor stations, the emissions of CO are considered, considering the mixing of gas media and the compression of CH/H.

Development of the automated temperature control system of the main gas pipeline.

This article presents the results of a numerical experiment and an analysis of temperature fields (coolers for gas) using cooling elements in the case study gas pipeline. An analysis of the temperature fields demonstrated several principles for the formation of a temperature field, which indicates the need to maintain a relative temperature for gas pumping. The essence of the experiment was to install an unlimited number of cooling elements on the gas pipeline.

Experience of virtual commissioning of a process control system for the production of high-paraffin oil.

This work describes the experience in developing and testing software for oil industry automation control systems based on the simulation of technological processes and control systems combined in virtual reality, this approach is called virtual commissioning and is widely used in the world both to create automated process control systems and to simulate interactions between different systems.

[Challenges of expert assessment of injury to health in the case of iatrogenic mastectomy due to erroneous histological verification of an oncological condition].

A case of commission forensic medical examination in the St. Petersburg Bureau of Forensic Science of a civil case due to an unfavorable treatment outcome is presented. Patient , 45 years old; due to erroneous histological verification of oncological pathology, she had both breasts removed and received antitumor treatment.