GOST 34741-2021 “Gas distribution systems. Objects of liquid petroleum gases. General requirements for operation” and GOST 34670-2020 “Gas distribution systems. Gas pressure regulating stations. Basic provisions” that came into force since June 1, 2022 became the most highly demanded standards in June 2022 according to the information received from the Department of Distribution of the Documents on Standardization of the Russian Standardization Institute. The above-mentioned documents have been implemented for the first time.
Gas distribution system is an asset industrial complex that consists of organizational and economically interconnected objects dedicated for transportation and supply of the gas to the consumers. Gas distribution systems that are put into operation are subject to registration in the state register of objects which have negative influence on the environment in the procedure that is set according to national legislation in the field of environment protection.
Organizations and private entities owning gas distribution networks, separate constructions or technological devices of gas distribution systems should support activities of the above-mentioned facilities in proper operation conditions.
GOST 34741-2021 sets general requirements to the operation of gas distribution systems transporting natural gas under the pressure up to 1,2 MPa inclusively. Current document also specifies the requirements to the content and execution of operational documentation during the process of their operation. GOST 34741-2021 is distributed on gas distribution pipelines, technological devices, anticorrosive protection of steel underground pipelines, technical devices and constructions that are fixed up in the pipelines.
GOST 34670-2020 “Gas distribution systems. Gas pressure regulating stations. Basic provisions” has been developed for the use during the design, construction (reconstruction) and operation of gas pressure reduction sites used in the networks of gas distribution and gas consumption. Current document can also be used during organization of the procedure of conformity assessment.
This standard provides definition of the term gas pressure reduction site. It is technological device of gas distribution network dedicated for reduction of gas pressure and its support in the specified limits regardless of the consumption of the gas.
Gas pressure reduction site is placed taking into account preventive and protective measures that are developed during the design in line with safety requirements. The below-mentioned points should be provided when choosing a ground for gas pressure reduction sites: access conditions for technical and emergency maintenance and repair, storage of the materials used in emergencies, free access of in-house vehicles including special automobiles. It is recommended to place the fence around the ground for gas pressure reduction sites.
GOST 34802-2021 “Gas distribution systems. Coatings with extruded polyethylene for steel pipes. General technical requirements” was very popular among the customers in June2022. This standard will become effective in August 2022. It will be implemented for the first time.
Current standard sets general requirements to monolayer, double layer and three layer coatings with extruded polyethylene applied on the surface of steel pipes in the factories. These coatings are used for protection from the corrosion of steel underground and underwater pipelines of the networks of gas distribution and gas consumption with the temperature varying from - 20 °С to 60 °С inclusively.