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6 January 2022, 14:17

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Specialists are working without shutting off the gas for residents of the districts.

The Kutuzovsky and Frunzensky siphons are being reconstructed in the capital. The work is being carried out as part of a large-scale reconstruction of urban high and medium pressure pipelines-siphons, built in 1939-1965. They are made reliable and safe. In total, 13 gas pipelines are being modernized in the capital.

Reconstruction works are carried out by the employees of Mosgaz JSC as part of the municipal economy complex. When replacing subsea gas pipelines, they use modern technological solutions. Thus, an automated system for monitoring the gas content of the environment and automatic shut-off devices make it possible to remotely identify the problem and shut off the gas supply from the central control room in two minutes.

Duker Kutuzovsky

Reconstruction of the Kutuzovskiy gas pipeline-siphon began in July 2021. This is one of the most complex facilities – it supplies gas to the densely populated areas of Presnensky, Khoroshevo-Mnevniki and Khoroshevsky, and among its major consumers is the Mezhdunarodnaya thermal power plant and CHPP-16. In addition, the Kutuzovsky siphon is a part of a medium-pressure ring gas pipeline and the only section connecting the Ochakovskaya GS and Silicatny 3-rd gas control points.

In the area of ​​work there are the Moscow City business center, two metro lines and other urban infrastructure facilities. Two tunnels 216 and 44 meters long will be built here; this will be done in a closed way using microtunneling technology.

The pipes are laid under the river bed. Today, the work of the micro-tunnel shield under the Moskva River has been completed, as well as the installation of a reinforced concrete case with a diameter of 1780 millimeters and a steel case with a diameter of 1220 millimeters.

“Our task is to ensure the reconstruction of the gas pipeline with maximum comfort for the residents of the city. The project, which was developed by Mosgaz, ensures the preservation of the ecological system at the work site, since we do not touch the river bed and banks. For this, work is being carried out in solid ground at a depth of more than 10 meters under the bottom of the river.

We have already modernized six siphons, work is underway on four more: at Kutuzovsky, Shchukinsky, Golyanovsky and Frunzensky. It is important to note that all these facilities are located in densely populated areas with a large number of utilities, which, in turn, requires increased attention, ”said Hasan Gasangadzhiev, General Director of Mosgaz JSC.

Duker Frunzensky

In December 2021, gas workers in the capital began reconstruction of the Frunzensky pipeline-siphon, which feeds the residential sector and utilities in the Zamoskvorechye, Khamovniki and Dorogomilovo districts. All stages of work are carried out without disconnecting consumers.

Here, the specialists also work with a closed method; now they are preparing a pit for microtunneling. From the side of the embankment adjacent to Gorky Park, mines have already been drilled and the excavation is being developed and reinforced.

“It is important to note that traffic on the Frunzenskaya embankment has not been suspended. Taking into account the fact that the object is located in a densely populated area of ​​Moscow, specialists carry out work only during the daytime with maximum comfort for residents. After the completion of the stage of operation of the micro-penetrating shield in a reinforced concrete case, work will be carried out on the installation of a steel case with a diameter of 1000 millimeters and a working pipe with a diameter of 600 millimeters with increased strength characteristics, ”Hasan Hasangadzhiyev said.

The installation of gas pipelines-siphons is constantly monitored by employees of the laboratory of technical supervision of Mosgaz. Using a special X-ray machine, they check each welded joint on site. The pictures are processed in a mobile control laboratory using automatic processing machines. The result is given right on the site, which allows you to detect defects in the joints in time and reduce the construction time.

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EDITOR’S NOTE: This article is a translation. Apologies should the grammar and or sentence structure not be perfect.

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