Engineering equipment, utility networks, engineering activities

The design documentation was developed in accordance with the calculated hydraulic gas supply scheme, with the aim of gasifying consumers in accordance with the address lists provided by the district administration, taking into account the laying of gas distribution networks for gas supply to promising areas of the village. Gas consumers are residential buildings that are in departmental or private ownership, social facilities, boiler houses. Characteristics of natural gas: Q = 8000 kcal/m3; Y = 0,68 kg/m3; Estimated gas pressure: high-pressure gas pipeline of category II - P surf = 0,45-0,37 MPa; gas pipeline of medium pressure - R izb. = 0,24 MPa; Gas pipelines are designed along the streets, driveways, highways located on the lands of the municipality of the settlement, belonging to the category of lands of urban and rural settlements. The project documentation provides for the implementation of gasification works in three stages: Stage 1. Southwestern part: laying of a gas pipeline - a high-pressure outlet Dn160 mm from the existing inter-settlement gas pipeline Dn315 mm, laid along the street to the design gas control point GRP 3; installation of a cabinet-type gas control station UGRSH-3V-50 GRP2 in front of a children's sanatorium within the boundaries of the TRZ-2 zone (area of ​​tourism facilities, sanatorium and resort treatment, hotels, boarding houses, summer cottages), the estimated gas flow rate at GRP3 is 1542 m3 / h, throughput at Рin = 0,45 MPa - 2850 m3/h, Рout = 0,24 MPa, RDP-50V regulator with redundant reduction line; laying of a gas pipeline - a high-pressure outlet Dn160 mm from the existing inter-settlement gas pipeline Dn315 mm, laid along the street to the design gas control point GRP 2; installation of a cabinet-type gas control station GRP2 cabinet-type UGRSH-50V-2 to the east of the intersection of streets within the boundaries of the T1Zh2-2 zone (residential area of ​​individual detached residential buildings with plots of at least 1200 m2 with the inclusion of social, cultural and domestic facilities), estimated gas consumption at hydraulic fracturing3 - 2149,0 m3/h, throughput at Рin = 0,45 MPa - 2850 m3/h, Pout = 0,24 MPa, regulator RDP-50V with redundant reduction line; laying medium-pressure distribution gas pipelines from GRP2 and GRP3 Dn 225 mm, Dn160 mm, Dn110 mm, Dn90 mm, Dn63 mm from GRP2 and GRP3 with ring and dead-end sections along streets, highways, driveways without a name; laying branches from the design distribution gas pipelines within the boundaries of the red lines of the streets in accordance with the address lists. Stage 2. Southeast part: laying of a gas pipeline - a high-pressure outlet Dn160 mm from the existing inter-settlement gas pipeline Dn315 mm, laid along the street to the design gas control point GRP 1; installation of a cabinet-type gas control station GRP1 of a cabinet-type ShRP ITGAZ MBN / 65-2 southeast of the intersection of streets within the boundaries of the TRZ-2 zone (area of ​​tourism facilities, sanatorium and resort treatment, hotels, boarding houses, summer cottages), the estimated gas consumption at GRP1 is 2755 m3/h, throughput at Рin = 0,45 MPa – 3654,8 m3/h, Рout = 0,24 MPa, MBN/65 regulator with redundant reduction line; laying of gas distribution pipelines of medium pressure Dn 225 mm, Dn160 mm, Dn110 mm, Dn90 mm, Dn63 mm from GRP1 with ring and dead-end sections along streets, driveways without a name; laying branches from the design distribution gas pipelines to the border of the consumer territory in accordance with the address lists; Stage 3. Northern part: Laying a high-pressure gas pipeline Dn225 mm along the streets from the existing inter-settlement gas pipeline Dn315 mm in the intersection of streets to the design gas control point GRP 4; installation of a cabinet gas control station GRP4 cabinet type UGRSH-50V-2 northeast of house 4 along the street within the boundaries of the T1Zh2-2 zone (residential area of ​​individual detached residential buildings with plots of at least 1200 m2 with the inclusion of social, cultural and domestic facilities) , estimated gas flow rate for hydraulic fracturing4 - 1460 m3/h, throughput at Pin = 0,44 MPa - 2850,0 m3/h, Pout = 0,24 MPa; laying of a high-pressure gas pipeline Dn225 mm from the project gas pipeline in the hydraulic fracturing zone 4 to hydraulic fracturing 5 with the intersection of the railway at km 53 + 833 m of the haul; installation of a cabinet-type gas control station GRP5 cabinet-type ShRP ITGAZ MBN / 80-2 to the north of the railway lines in the alignment of Pochtovoy per. within the boundaries of the T1Zh2-1 zone (residential zone of individual detached residential buildings with plots of at least 150 m2 with the inclusion of social, cultural and domestic facilities related to the residence of citizens, as well as engineering infrastructure facilities), the estimated gas flow rate for hydraulic fracturing 5 is 3188 m3 /h, throughput at Рin = 0,37 MPa - 4870,0 m3/h, Рout = 0,24 MPa; laying of gas distribution pipelines of medium pressure Dn 225 mm, Dn160 mm, Dn110 mm, Dn90 mm, Dn63 mm from GRP4 and GRP5 with ring and dead-end sections along streets, driveways without a name, including along the railway; laying branches from the project distribution gas pipelines to the border of the consumer territory in accordance with the address lists. Distribution gas pipelines are designed in the carriageways of streets and passages, outside the carriageways of streets and passages located in the territories of recreation and healthcare facilities, low-rise residential buildings, in the territories of public green areas, state dachas and gardens, in water protection zones of the bay and unnamed stream. Laying of gas pipelines - underground, above-ground laying is used in the piping of cabinet gas control points. If the routing of high and medium pressure gas pipelines coincides, the laying is provided in a common trench. The laying of underground gas pipelines is provided for in an open way and a closed way. Closed method - by directional drilling designed: when crossing the railway with the use of steel cases at km 53+433 m of the stretch ******** - medium pressure gas pipeline Dn110 mm, at km 53+833 m of the stretch ******** - high pressure gas pipeline Dn160 mm, medium pressure gas pipeline Dn225 mm. \ \when crossing a stream (2 places) and a stream without a name; If the routing of high and medium pressure gas pipelines coincides, the laying is provided in a common trench. The construction of pits for closed laying and a trench for the gas pipeline was carried out taking into account the data of engineering and geological surveys, backfilling the base of the trench with 100 mm medium and coarse-grained sand, in areas with a high level of groundwater, gas pipelines are ballasted with weighting agents - bags with a cement-sand mixture. Underground gas pipelines of high and medium pressure are designed from polyethylene pipes in accordance with GOST R 50838-95 with a safety factor not less than 2,5 for medium pressure gas pipelines; not less than 2,8 for a high pressure gas pipeline; Aboveground gas pipelines are designed from steel electric-welded longitudinal pipes in accordance with GOST 10704-91*. The following equipment is provided on the gas pipelines: shut-off valves, permanent steel-reinforced polyethylene joints, control tubes, purge devices, insulating joints. The laying of gas pipelines in cases is designed at the intersection with engineering communications. To indicate the places for laying underground gas pipelines, a signal tape and indicators for the location of underground utilities were used. As shutoff valves on underground gas distribution pipelines, underground valves under the carpet are designed, on above-ground and purge gas pipelines - ball valves. Factory-delivered cabinet gas control points are designed on free-standing foundations, in a fence made of mesh panels along concrete pillars and installed on hard-surfaced sites and an entrance. For hydraulic fracturing, an independent ground loop and lightning protection are provided. Polyethylene gas pipelines do not require corrosion protection. To protect the designed steel gas pipelines and cases from corrosion, the project provides for: anti-corrosion coating of underground gas pipelines and cases "very reinforced "type; two-layer paint coating of above-ground gas pipelines. insulating compounds; electrochemical protection. In accordance with Appendix 1 of Federal Law No. 21-F1997 of July 116, 3, the facility is categorized as hazardous production facilities. In order to ensure industrial safety: the technical devices used in the design documentation are certified for compliance with GOST, have a "Permission to Use" of the Federal Service for Ecological, Technological and Nuclear Supervision; when designing the facility, the current State standards, building codes and regulations, and other regulatory documents were applied. The project documentation provides for the protection of cases for medium and low pressure gas pipelines: installation of protective protection; installation of a contact device on the SKIP case; installation of reference electrodes. The design documentation provides for the protection of two SDCs from direct lightning strikes with free-standing lightning rods 10 m high. The lightning protection grounding conductor for SDCs is designed from vertical electrodes.