Laying a gas pipeline along the walls of buildings

Gasification is a technologically complex process that should be carried out exclusively by professionals. The most important stage in the laying of a gas pipeline is its design, taking into account the smallest details and a preliminary assessment of the specifics of the building. Do not forget about the equipment, without which it is impossible to mount a gas pipeline at a height (for example, rental of construction cradles). Within this stage, the following is determined:
The location of the pipeline
· Type of equipment,
location of chimneys and ventilation openings.
Illiterate technical solutions can lead to serious problems regarding the safety of building occupants and lead to insufficiently efficient functioning of the system. It is necessary to carry out work at height using special equipment, in this case, you can use the service of renting construction cradles.

Gas pipelines along the walls: installation specifics

This type of gasification refers to ground. Its advantages are: in unhindered access to the system for service personnel at any time; they are less susceptible to deformations than underground ones; service can be performed without disabling access points for consumers.
Only low and medium pressure systems are allowed to be mounted on the outer walls of residential buildings and public facilities. At the same time, requirements are also imposed on the structure: the degree of fire resistance of the structure must be at least degree IV, the supports used in its construction are fireproof and freestanding.
Lay low-pressure gas pipelines along the walls of residential buildings with a boundary pipe diameter of 50 mm.
The installation procedure will require the rental of facade lifts in the absence of proper equipment. Under window openings, as well as from the bottom of balconies, it is not recommended to lay connections by the type of flanged or threaded ones. It is necessary to protect the pipes from mechanical damage and adverse environmental conditions, cover with heat-insulating material. The pipe must be mounted at a slope (at least 0.003), at the lowest point it is necessary to install structures to receive the accumulated condensate.
Pipes are mounted using a welding machine, after fixing along the wall (observing the distance between its surface and the gas pipeline), the entire system is tested for the absence of gaps and holes. This reduces the risk of gas leakage, ensuring complete user safety. Rent of facade lifts, ordered from any reliable company, will greatly facilitate the installation of a gas pipeline for specialists.

5.1.1 The placement of external gas pipelines in relation to buildings, structures and parallel neighboring engineering networks should be carried out in accordance with the requirements of SNiP 2.07.01, and on the territory of industrial enterprises - SNiP II-89.

When laying underground gas pipelines with a pressure of up to 0.6 MPa in cramped conditions (when it is not possible to fulfill the distances regulated by regulatory documents), in certain sections of the route, between buildings and gifts of buildings, as well as gas pipelines with a pressure of more than 0.6 MPa when they approach with detached utility buildings (buildings without the constant presence of people), it is allowed to reduce the distances specified in SNiP 2.07.01 and SNiP II-89 by up to 50%. At the same time, in the areas of approach and at a distance of at least 5 m in each direction from these areas, the following should be applied:

seamless or electric-welded steel pipes laid in a protective case, with 100% control by physical methods of factory welded joints;

polyethylene pipes laid in a protective case, without welded joints or connected by parts with embedded heaters (HE), or butt-welded with 100% control of joints by physical methods.

When laying gas pipelines at distances corresponding to SNiP 2.07.01, but less than 50 m from public railways in the approach area and 5 m in each direction, the laying depth must be at least 2.0 m. Butt welded joints must pass 100% - ny control by physical methods.

In this case, the wall thickness of steel pipes should be 2–3 mm more than the calculated one, and polyethylene pipes should have a safety factor of at least 2.8.

5.1.2 Laying of gas pipelines should be provided underground and ground.

In justified cases, aboveground laying of gas pipelines along the walls of buildings inside residential courtyards and quarters, as well as in certain sections of the route, including sections of crossings through artificial and natural barriers when crossing underground utilities, is allowed.

Aboveground and surface gas pipelines with dikes can be laid in rocky, permafrost soils, in wetlands and under other difficult soil conditions. The material and dimensions of the embankment should be taken on the basis of thermal engineering calculations, as well as ensuring the stability of the gas pipeline and embankment.

5.1.3 Laying of gas pipelines in tunnels, collectors and channels is not allowed. The exception is the laying of steel gas pipelines with a pressure of up to 0.6 MPa in accordance with the requirements of SNiP II-89 on the territory of industrial enterprises, as well as in channels in permafrost soils under roads and railways.

5.1.4 Pipe connections should be provided as one-piece connections. Detachable can be connections of steel pipes with polyethylene and

in the places of installation of fittings, equipment and instrumentation (KIP). Detachable connections of polyethylene pipes with steel pipes in the ground can only be provided if a case with a control tube is installed.

5.1.5 Gas pipelines at the points of entry and exit from the ground, as well as gas pipeline entries into buildings, should be enclosed in a case. The space between the wall and the case should be sealed for the entire thickness of the crossed structure. The ends of the case should be sealed with elastic material.

5.1.6 The entry of gas pipelines into buildings should be provided directly to the room where the gas-using equipment is installed, or to the adjacent room, connected by an open opening.

It is not allowed to enter gas pipelines into the premises of the basement and basement floors of buildings, except for the inputs of natural gas pipelines into single-apartment and block houses.

5.1.7 Disconnecting devices on gas pipelines should be provided for:

in front of detached or blocked buildings;

to disconnect the risers of residential buildings above five floors;

in front of outdoor gas-using equipment;

in front of gas control points, with the exception of hydraulic distribution stations of enterprises, on the branch of the gas pipeline to which there is a disconnecting device at a distance of less than 100 m from the hydraulic distribution station;

at the outlet of gas control points looped by gas pipelines;

on branches from gas pipelines to settlements, individual microdistricts, quarters, groups of residential buildings, and with more than 400 apartments, to a separate house, as well as on branches to industrial consumers and boiler houses;

when crossing water barriers with two threads or more, as well as one thread with a width of a water barrier with a low-water horizon of 75 m or more;

when crossing railways of the general network and motor roads of categories I-II, if the disconnecting device that ensures the interruption of the gas supply at the crossing section is located at a distance of more than 1000 m from the roads.

5.1.8 Disconnecting devices on aboveground gas pipelines laid along the walls of buildings and on supports should be placed at a distance (within a radius) from door and opening window openings not less than:

for low pressure gas pipelines - 0.5 m;

for gas pipelines of medium pressure - 1 m;

for high-pressure gas pipelines of category II - 3 m;

for high-pressure gas pipelines of category I - 5 m.

In the areas of transit laying of gas pipelines along the walls of buildings, the installation of disconnecting devices is not allowed.

5.2.1 Laying of gas pipelines should be carried out at a depth of at least 0.8 m to the top of the gas pipeline or case. In places where the movement of vehicles and agricultural vehicles is not provided, the depth of laying steel gas pipelines may be at least 0.6 m.

5.2.2 The vertical distance (in the light) between the gas pipeline (case) and underground utilities and structures at their intersections should be taken taking into account the requirements of the relevant regulatory documents, but not less than 0.2 m.

5.2.3 At the intersection of gas pipelines with underground communication collectors and channels for various purposes, as well as at the places where gas pipelines pass through the walls of gas wells, the gas pipeline should be laid in a case.

The ends of the case must be led out at a distance of at least 2 m on both sides of the outer walls of the structures and communications being crossed, when crossing the walls of gas wells - at a distance of at least 2 cm. The ends of the case must be sealed with waterproofing material.

At one end of the case at the top of the slope (with the exception of the intersections of the walls of the wells), a control tube should be provided that goes under the protective device.

In the annular space of the case and the gas pipeline, it is allowed to lay an operational cable (communications, telemechanics and electrical protection) with a voltage of up to 60 V, intended for servicing gas distribution systems.

5.2.4 Polyethylene pipes used for the construction of gas pipelines must have a safety factor in accordance with GOST R 50838 of at least 2.5.

It is not allowed to lay gas pipelines from polyethylene pipes:

on the territory of settlements at a pressure of more than 0.3 MPa;

outside the territory of settlements at a pressure of more than 0.6 MPa;

for transportation of gases containing aromatic and chlorinated hydrocarbons, as well as the liquid phase of LPG;

at a gas pipeline wall temperature under operating conditions below minus 15 °C.

When using pipes with a safety factor of at least 2.8, it is allowed to lay polyethylene gas pipelines with a pressure of more than 0.3 to 0.6 MPa in the territories of settlements with predominantly one-two-story and cottage residential buildings. On the territory of small rural settlements, it is allowed to lay polyethylene gas pipelines with a pressure of up to 0.6 MPa with a safety factor of at least 2.5. In this case, the laying depth must be at least 0.8 m to the top of the pipe.

5.3.1 Above-ground gas pipelines, depending on the pressure, should be laid on supports made of non-combustible materials or along the structures of buildings and structures in accordance with Table 3

Table 3

5.3.2 Transit laying of gas pipelines of all pressures along the walls and above the roofs of buildings of children's institutions, hospitals, schools, sanatoriums, public, administrative and household buildings with a mass stay of people is not allowed.

It is forbidden to lay gas pipelines of all pressures along the walls, above and below the premises of categories A and B, determined by fire safety standards, with the exception of the buildings of the hydraulic distribution plant.

In justified cases, transit laying of gas pipelines not exceeding average pressure with a diameter of up to 100 mm is allowed along the walls of one residential building not lower than the III degree of fire resistance of class CO and at a distance to the roof of at least 0.2 m.

5.3.3 High-pressure gas pipelines should be laid along blank walls and sections of walls or at least 0.5 m above the window and door openings of the upper floors of industrial buildings and administrative and amenity buildings adjacent to them. The distance from the gas pipeline to the roof of the building must be at least 0.2 m.

Low and medium pressure gas pipelines can also be laid along the sashes or mullions of non-opening windows and cross the window openings of industrial buildings and boiler rooms filled with glass blocks.

5.3.4 The height of the laying of aboveground gas pipelines should be taken in accordance with the requirements of SNiP 11-89.

5.3.5 On pedestrian and automobile bridges built of non-combustible materials, it is allowed to lay gas pipelines with a pressure of up to 0.6 MPa from seamless or electric-welded pipes that have passed 100% control of factory welded joints by physical methods. Laying of gas pipelines on pedestrian and automobile bridges built of combustible materials is not allowed.

5.4.1 Underwater and surface gas pipelines at the places where they cross water barriers should be placed at a horizontal distance from the bridges in accordance with Table 4.

5.4.2 Gas pipelines at underwater crossings should be laid deep into the bottom of the crossed water barriers. If necessary, based on the results of the ascent calculations, it is necessary to ballast the pipeline. The mark of the top of the gas pipeline (ballast, lining) should be at least 0.5 m, and at crossings through navigable and raftable rivers - 1.0 m below the predicted bottom profile for a period of 25 years. When performing work by the method of directional drilling - not less than 2.0 m below the predicted bottom profile.

5.4.3 At underwater crossings, the following should be used:

steel pipes with a wall thickness of 2 mm more than the calculated one, but not less than 5 mm;

polyethylene pipes with a standard dimensional ratio of the outer diameter of the pipe to the wall thickness (SDR) of not more than 11 (according to GOST R 50838) with a safety factor of at least 2.5 for crossings up to 25 m wide (at the level of maximum water rise) and not less than 2.8 otherwise.

When laying a gas pipeline with a pressure of up to 0.6 MPa by the method of directional drilling, polyethylene pipes with a safety factor of at least 2.5 can be used in all cases.

5.4.4 The height of laying the surface crossing of the gas pipeline from the calculated level of water rise or ice drift according to SNiP 2.01.14 (high water horizon - GVV or ice drift - GVL) to the bottom of the pipe or span should be taken:

when crossing ravines and beams - not lower than

Table 4

0.5 m above GVV 5% security;

when crossing non-navigable and non-alloyable rivers - at least 0.2 m above the GWV and GVL of 2% security, and if there is a stump walker on the rivers - taking it into account, but not less than 1 m above the GWV of 1% security;

when crossing navigable and raftable rivers - not less than the values ​​established by the design standards for bridge crossings on navigable rivers.

Shut-off valves should be placed at a distance of at least 10 m from the borders of the transition. The transition boundary is taken to be the places where the gas pipeline crosses the high water horizon with a 10% security.

5.5.1 Horizontal distances from the intersections of underground gas pipelines of tram and railway tracks and highways must be at least:

to bridges and tunnels on public railways, tramways, highways of categories I-III, as well as to pedestrian bridges, tunnels through them - 30 m, and for non-public railways, highways of categories IV-V and pipes - 15 m ;

to the turnout zone (the beginning of the wits, the tail of the crosses, the places where suction cables are attached to the rails and other track crossings) - 4 m for tram tracks and 20 m for railways;

to the supports of the contact network - 3m.

It is allowed to reduce the indicated distances in agreement with the organizations in charge of the structures being crossed.

5.5.2 Underground gas pipelines of all pressures at intersections with railway and tram tracks, motor roads of categories I-IV, as well as main streets of citywide significance should be laid in cases. In other cases, the issue of the need to arrange cases is decided by the design organization.

Cases must meet the conditions of strength and durability. At one end of the case, a control tube should be provided that goes under the protective device.

5.5.3 The ends of the cases when crossing gas pipelines of public railways should be taken out at a distance from them not less than those established by SNiP 32-01. When laying inter-settlement gas pipelines in cramped conditions and gas pipelines on the territory of settlements, it is allowed to reduce this distance to 10 m, provided that an exhaust candle with a sampling device is installed at one end of the case, brought to a distance of at least 50 m from the edge of the subgrade (the axis of the extreme rail at zero marks).

In other cases, the ends of the cases should be located at a distance of:

not less than 2 m from the outermost rail of the tram track and 750 mm gauge railways, as well as from the edge of the carriageway of the streets;

not less than 3 m from the edge of the drainage structure of roads (ditch, ditches, reserve) and from the extreme rail of non-public railways, but not less than 2 m from the bottom of the embankments.

5.5.4 When gas pipelines cross public railway lines of 1520 mm gauge, the laying depth of the gas pipeline shall comply with SNiP 32-01.

In other cases, the depth of laying the gas pipeline from the bottom of the rail or the top of the road surface, and if there is an embankment, from its bottom to the top of the case, must meet safety requirements, but be no less than:

in the production of works in an open way -1.0 m;

in the performance of work by punching or directional drilling and shield penetration -1.5 m;

in the production of work by the puncture method - 2.5 m.

5.5.5 The wall thickness of the pipes of a steel gas pipeline when it crosses public railways must be 2–3 mm more than the calculated one, but not less than 5 mm at distances of 50 m in each direction from the edge of the subgrade (the axis of the extreme rail at zero marks) .

For polyethylene gas pipelines in these sections and at the intersections of motor roads of categories I–Ill, polyethylene pipes of no more than SDR 11 with a safety factor of at least 2.8 should be used.

5.6.1 Gas supply to cities with a population of more than 1 million people. with a seismicity of the area more than 6 points, as well as cities with a population of more than 100 thousand people. in case of seismicity of the area more than 7 points, it should be provided from two sources or more - main GDS with their placement on opposite sides of the city. At the same time, high and medium pressure gas pipelines should be designed as looped ones with their division into sections by disconnecting devices.

5.6.2 Crossings of gas pipelines through rivers, ravines and railway tracks in recesses, laid in areas with a seismicity of more than 7 points, should be provided above ground. The structures of the supports must ensure the possibility of movement of gas pipelines that occur during an earthquake.

5.6.3 During the construction of underground gas pipelines in seismic areas, in undermined and karst areas, at intersections with other underground utilities, at the corners of turns of gas pipelines with a bend radius of less than 5 diameters, at network branching points, transition of underground laying to aboveground, location of permanent connections “polyethylene-steel”, as well as within the boundaries of settlements in linear sections every 50 m, control tubes should be installed.

5.6.4 The depth of laying gas pipelines in soils of varying degrees of heaving, as well as in bulk soils, should be taken up to the top of the pipe - not less than 0.9 of the standard freezing depth, but not less than 1.0 m.

With uniform heaving of pounds, the depth of the gas pipeline to the top of the pipe should be:

not less than 0.7 of the standard freezing depth, but not less than 0.9 m for medium heaving soils;

not less than 0.8 of the standard freezing depth, but not less than 1.0 m for heavily and excessively heaving soils.

5.6.5 For LPG tank installations with underground tanks in heaving (except slightly heaving), medium and strongly swelling soils, above-ground laying of liquid and vapor phase gas pipelines connecting the tanks should be provided.

5.6.6 If the seismicity of the area is more than 7 points, in undermined and karst areas, in areas of permafrost, pipes with a safety factor of at least 2.8 should be used for polyethylene gas pipelines. Welded butt joints must be 100% controlled by physical methods.

5.7.1 To restore (reconstruct) worn-out underground steel gas pipelines outside and on the territory of urban and rural settlements, the following should be applied:

at a pressure of up to 0.3 MPa, inclusive, pulling polyethylene pipes in a gas pipeline with a safety factor of at least 2.5 without welded joints or connected using parts with GL, or butt-welded using welding equipment of a high degree of automation;

at a pressure of 0.3 to 0.6 MPa, inclusive, pulling polyethylene pipes in the gas pipeline without welded joints or connected using parts with ZN or butt welding using welding equipment of a high degree of automation with a safety factor for gas pipelines on the territory of settlements of at least 2, 8, and outside settlements - at least 2.5. The space between the polyethylene pipe and the worn-out steel gas pipeline (framework) along the entire length must be filled with a sealing (sealing) material (cement-sand mortar, foam material);

at a pressure of up to 1.2 MPa, lining (using the Phoenix technology) of the cleaned inner surface of gas pipelines with a synthetic fabric hose on a special two-component adhesive, subject to confirmation in the prescribed manner of their suitability for these purposes for the specified pressure or in accordance with standards (technical specifications) ; the scope of which extends to a given pressure.

5.7.2 Restoration of worn-out steel gas pipelines is carried out without changing the pressure, with an increase or decrease in pressure compared to the existing gas pipeline.

It is allowed to keep:

intersections of the restored areas with underground utilities without installing additional cases;

depth of laying of the restored gas pipelines;

the distance from the restored gas pipeline to buildings, structures and utilities according to its actual location, if the pressure of the restored gas pipeline does not change or when the pressure of the restored gas pipeline increases to 0.3 MPa.

Restoration of worn-out steel gas pipelines with an increase in pressure to high pressure is allowed if the distances to buildings, structures and utilities meet the requirements for a high-pressure gas pipeline.

5.7.3 The size ratio of polyethylene and steel pipes during reconstruction by pulling should be selected based on the possibility of free passage of polyethylene pipes and parts inside steel pipes and ensuring the integrity of polyethylene pipes. The ends of the reconstructed sections between polyethylene and steel pipes must be sealed.

2-3215/2015

SOLUTION

IN THE NAME OF THE RUSSIAN FEDERATION

Oktyabrsky District Court of the city of Kirov

Judge Starodumova S.A.,

under the secretary Kultysheva E.S.,

examined in open court a civil case under the claim Prokashevoj T.A. to Gazprom Gas Distribution Kirov JSC on the obligation to replace an expired gas pipeline,

INST A N O V&L:

Prokasheva G.A. applied to the court with a statement of claim against OAO Gazprom gazoraspredeleniye Kirov, represented by a branch in the city of Kirov, on the obligation to replace an expired gas pipeline. In support of the claims, she indicated that the plaintiff lives in the house at: , built in 1972. In the same year, a gas pipeline was put into operation to this house, i.e. the gas pipeline was completed 43 years ago. According to clause 5.3.7 of the Safety Rules for facilities using liquefied hydrocarbon gases, approved. By Decree of the Federal Mining and Industrial Supervision of Russia dated May 27, 2003 No. 40, existing external gas pipelines must be subject to periodic bypasses, instrumental technical inspection, technical condition diagnostics, as well as current and major repairs. Underground gas pipelines with a service life are subject to diagnosis: steel - 40 years; polyethylene - 50 years. Gas equipment (technical devices) are subject to diagnostics after the service life specified by the manufacturer, but not more than 20 years of operation. In case of violation of the operation of the gas pipeline due to leakage, if there is damage on the gas pipeline, an explosion of the house may occur. They can appear from loose connections, from damage to the gas pipeline itself (corrosion, panic effects). Diagnostics involves checking the wall thickness of the gas pipeline pipe, the presence of corrosion. The gas pipeline can be laid not only underground, but aboveground and aboveground. According to paragraph 4.3 of SNiP 2.04.08-87 "Gas supply", the laying of external gas pipelines on the territory of settlements should be provided, as a rule, underground in accordance with the requirements of SNiP 2.07.01-89 *. Above ground and ground laying of external gas pipelines is allowed inside residential areas and courtyards, as well as on other separate sections of the route. Paragraph 4.22. * of the same SNiP provides that above-ground gas pipelines should be laid on separate supports, shelves and columns made of non-combustible materials and along the walls of buildings. At the same time, laying is allowed: on free-standing supports, columns, overpasses and a stack of gas pipelines of all pressures; along the walls of industrial buildings with premises of categories C, D and D - gas pipelines with a pressure of up to 0.6 MPa (6 kgf / cm2); on the walls of public buildings and residential buildings not lower than III-IIIa degree of fire resistance - gas pipelines with a pressure of up to 0.3 MPa (3 kgf / cm2); along the walls of public buildings and residential buildings of the IV-V degree of fire resistance - low-pressure gas pipelines with a nominal pipe diameter, as a rule, not more than 50 mm, and when gas pressure regulators are placed on the outer walls and other structures of these buildings - gas pipelines with a pressure of up to 0.3 MPa - in the areas before entering them into the regulators. The transit laying of gas pipelines is prohibited: along the walls of buildings of children's institutions, hospitals, schools and entertainment enterprises - gas pipelines of all pressures; along the walls of residential buildings - gas pipelines of medium and high pressure. According to clause 4.1* of the Code of Rules “Gas distribution systems. Updated version of SNiP 42-01-2002”, design, construction, overhaul, expansion and technical re-equipment of gas distribution and gas consumption networks should be carried out in accordance with gas supply schemes developed as part of the federal, interregional and regional gasification programs of the constituent entities of the Russian Federation in order to ensure the envisaged these programs of the level of gasification of housing and communal services, industrial and other organizations. The construction of gas distribution networks and the reconstruction of worn-out steel gas pipelines should be carried out: using mainly polymer pipes and fittings (for example, from polyethylene and its modifications, polyamides); with the installation of control and safety devices for each consumer; with the laying of gas pipelines in places of limited access. In gas consumption networks, the safety of gas use must be ensured by technical means and devices. When designing gas pipelines from polyethylene and steel pipes, it is allowed to provide for their connection to existing gas pipelines without pressure reduction. In accordance with clause 4.16*, the operability and safety of operation of gas distribution and gas consumption networks and LPG facilities must be maintained and maintained through maintenance and repair in accordance with operational documents, technical regulations, national standards and codes of practice approved by federal executive authorities, and other normative legal documents. The connection of gas pipelines without pressure reduction must be carried out using special equipment that ensures the safety of work according to the technologies and production instructions approved in the prescribed manner. As indicated in 5.1.2*, gas pipelines should be laid underground. In exceptional cases, above-ground laying of gas pipelines along the walls of buildings inside residential courtyards and quarters, as well as in certain sections of the route, including sections of crossings through artificial and natural barriers, when crossing engineering and technical support networks, is allowed. Such laying of gas pipelines may be envisaged with appropriate justification and carried out in places where access of unauthorized persons to the gas pipeline is restricted. To numerous requests from the plaintiff to the defendant about replacing the old underground gas pipeline with a gas pipeline along the facade of the building, the defendant replied that the diagnostics of the gas pipeline was carried out in 2010 by a specialized organization Kostromadiagnostika LLC, according to the conclusion, the gas pipeline is suitable for further operation. However, the conclusion itself was not made known. The presence of a gas pipeline on a land plot causes the establishment, in accordance with the Rules for the Protection of Gas Distribution Networks, approved by Decree of the Government of the Russian Federation of November 20, 2000 N 878, of a gas pipeline security zone, within which it is prohibited (clause 14 of the Rules): to build industrial facilities; arrange warehouses, dig and cultivate the soil with agricultural and reclamation tools and mechanisms to a depth of more than 0.3 meters., i.e. i.e. residents of the first floors of the house cannot attach balconies. The plaintiff asks to oblige the defendant to replace the expired underground gas pipeline with a ground one, along the facade of the house .; recover from the defendant the cost of paying the state duty and paying for legal services - 6 200 RUB.

Claimant Prokasheva T.A. and its representatives Shulepov A.B., Prokashev V.N. at the hearing supported the arguments and requirements of the claim. Additionally, it was explained to the court that the diagnostics of the gas pipeline did not meet the requirements of the standards, the submitted conclusion was not trusted, it was falsified, since in fact the state of the gas pipeline was not verified by the drilling method, their house was not indicated in the act. They believe that the underground gas pipeline violates their right as owners to use the land and to build balconies. It is also believed that since there was no opening of the land plot, they are afraid of corrosion on the gas pipeline, which poses a threat to life. An elevated gas pipeline is easier to control. They are not ready to bear the burden of paying for the replacement of the gas pipeline, because it is the property of Gazprom.

The representative of the defendant AO «Gazprom gazoraspredeleniye Kirov» by proxy Sannikov E.S. she did not recognize the claims, she explained to the court that the underground low-pressure gas pipeline laid in the city of Kirov at the following addresses: belongs to Gazprom Gas Distribution Kirov JSC, is a distribution gas pipeline for supplying natural gas. Due to the fact that the underground low-pressure gas pipeline, including at the address, was put into operation in 1972, at the request of Gazprom Gas Distribution Kirov JSC (formerly Kirovoblgaz JSC), technical diagnostics of the specified underground gas pipeline was carried out for assessing the compliance of the object with the requirements of industrial safety imposed on it by KostromaDiagnostika LLC in 2010. According to the results of the pit control during the examination, no damage was found to the welded joints of the gas pipeline, the insulating coating of the gas pipeline is good, there is no corrosion of the surface layer of the pipe metal. According to conclusion No. 17.2010/0006-5-3, the underground low-pressure gas pipeline complies with the industrial safety requirements imposed on it and is allowed for further operation. The period of safe operation of the gas pipeline has been extended until October 2020, taking into account the results of this opinion. After the expiration of the specified period, it is necessary to conduct an examination of industrial safety. Relocation of the underground low-pressure gas pipeline to the address is impractical, because according to conclusion No. 17.2010/0006-5-3, the specified underground low-pressure gas pipeline complies with the industrial safety requirements imposed on it and is approved for further operation. The removal of the gas pipeline to the facade of a residential building will contradict clause 4.7 of SP 42-101-2003, since the laying of gas pipelines on the territory of settlements is provided mainly underground. When the gas pipeline is moved to the facade of a residential building, there is no way to restrict the access of unauthorized persons to the gas pipeline and protect an indefinite circle of people from accidents and the consequences of these accidents. Due to the fact that the underground gas pipeline is a distribution gas pipeline, when the gas pipeline is moved to the facade (a complex of construction and installation works), for some time some of the residential buildings at the address will remain without gas supply services. Gazprom Gas Distribution Kirov JSC bears the burden of maintaining the said gas pipeline (operation, maintenance, diagnostics, repair, emergency dispatch support). In the event of the removal of a gas pipeline approved for further operation on the facade of a residential building, these costs must be reimbursed to the owner of the gas pipeline at the expense of the owners initiating the said removal. The presented act of technical research in the period from 07/08/2015 to 09/17/2015 confirms the inspection of the entire gas pipeline line, including the disputed house passing through the land plot, since the gas pipeline is a single object. in a lawsuit.

The representative of a third party - LLC UK "Paritet" Myshkin D.S. claims Prokasheva T.A. supported.

The court, after hearing the parties, examining the written evidence, came to the following.

I DECIDED:

In satisfaction of the claims Prokasheva T.A. to JSC "Gazprom gas distribution Kirov" Kirov on the obligation to replace the gas pipeline with expired service life refuse

The decision can be appealed to the Kirov Regional Court through the Oktyabrsky District Court of the city of Kirov within a month from the date of the final decision - 06 October 2015.

Judge S.A. Starodumova

When laying a gas pipeline underground or in a bunding, it is recommended to take the material and dimensions of the bunding based on the heat engineering calculation, as well as ensuring the stability and safety of the gas pipeline and bunding.

For underground gas pipelines laid in cramped conditions, the distances specified in Appendix B * may be reduced by no more than 50% when laying under normal conditions and no more than 25% - in special natural conditions. In cramped conditions, it is allowed to lay underground gas pipelines with a pressure of up to 0.6 MPa, inclusive, in certain sections of the route, between buildings and under the arches of buildings, and gas pipelines with a pressure of more than 0.6 MPa - when they approach separate auxiliary buildings (buildings without the constant presence of people) . At the same time, in the areas of approach and at a distance of at least 5 m in each direction from these areas, it is recommended to use one of the following options:

1. for steel gas pipelines:

• seamless pipes;
• electric-welded pipes with 100% control by physical methods of factory welded joints;
• electric-welded pipes that have not passed the above control, laid in a protective case;

1. for polyethylene gas pipelines:

• long pipes without connections;
• pipes of measured length, connected by butt welding with a heated tool, made on a welding technique of a high degree of automation, or connected by parts to the ZN;
• pipes of measured length, welded by welding equipment of an average degree of automation, laid in a case;

When laying gas pipelines in cramped conditions along railways, it is recommended to be guided by Appendix B *.

When laying gas pipelines at a distance of less than 50 m from the railways of the general network and external railway access roads of enterprises in the approach area and at a distance of 5 m in each direction, it is recommended to take a laying depth of at least 2.0 m. equipment with a high degree of automation, or connected by parts to the AP are subject to 100% control by physical methods. In this case, it is recommended to use polyethylene pipes made of PE 100/PE 100-RC. Safety factors are recommended to be applied in accordance with 5.2.4*. The wall thickness of steel pipes is recommended to be taken 2 - 3 mm more than the calculated one.

When laying gas pipelines on the territory of industrial enterprises, it is recommended to be guided by SP 18.13330.

5.1.2* Gas ​​pipelines may be laid underground, underwater or above ground.

Above-ground laying of gas pipelines is allowed to be provided along the walls of gasified buildings, inside residential courtyards and quarters, as well as in certain sections of the route, including sections of crossings through artificial and natural barriers, when crossing utility networks.

The laying height of aboveground gas pipelines and the laying depth of underground LPG gas pipelines can be taken as for gas pipelines of gas distribution networks and gas consumption of natural gas, with the exception of underground gas pipelines of the LPG vapor phase, which are recommended to be laid below the freezing depth of the soil.

The laying of LPG gas pipelines on the territory of the HPS and HPP should be provided aboveground.

It is not allowed to lay gas pipelines through the foundations of buildings and structures, through loggias and balconies, except for specified cases, as well as under the foundations of buildings and structures.

When laying gas pipelines of all categories at a distance of up to 15 m, and in areas with special conditions at a distance of up to 50 m from buildings of all purposes, sealing of underground inputs and outlets of engineering networks should be provided.

(Changed edition. Rev. No. 2)

5.1.3 Laying of gas pipelines in tunnels, collectors and channels is not allowed. The exception is the laying of steel gas pipelines with a pressure of up to 0.6 MPa inclusive in accordance with the requirements of SP 18.13330 on the territory of industrial enterprises, as well as in channels in permafrost soils under roads and railways and LPG gas pipelines under roads on the territory of gas filling stations.

(Changed edition. Rev. No. 2)

5.1.4* Pipe connections shall be permanent. In places of installation of technical devices, connections should be provided as detachable or non-detachable, depending on the design of technical devices and ease of maintenance.

(Changed edition. Rev. No. 2)

5.1.5 Gas pipelines at the points of entry and exit from the ground, as well as gas pipeline entries into buildings, are recommended to be enclosed in a case. It is recommended to seal the ends of the case at the points of entry and exit of the gas pipeline from the ground with an elastic material, and it is recommended to close the gap between the gas pipeline and the case at the gas pipeline entries into buildings for the entire length of the case. The space between the wall and the case is recommended to be sealed, for example, with cement mortar, concrete, etc. throughout the entire thickness of the crossed structure.

Cases at the outlet and inlet of the gas pipeline from the ground, provided that it has a protective coating that is resistant to external influences, may not be installed.

(Changed edition. Rev. No. 2)

5.1.6* Gas ​​pipelines should be introduced into buildings directly into the room in which gas-using equipment is installed, or into a room adjacent to it, connected by an open opening.

It is allowed to provide for the entry of gas pipelines into the kitchens of apartments through loggias and balconies, provided that there are no detachable connections on the gas pipelines and access is provided for their inspection.

It is not allowed to enter gas pipelines into the premises of the basement and basement floors of buildings, except for the inputs of natural gas pipelines into single-family and block houses and industrial buildings, in which the input is due to production technology.

(New edition. Rev. No. 2)

5.1.7* Shutoff valves (switching off device) on gas pipelines are recommended to be provided:

• at the border of the gas distribution and gas consumption network;
• for sectioning gas pipelines of the gas distribution network;
• in front of detached buildings, single-family or block houses;
• to turn off the risers of residential buildings, regardless of the number of storeys;
• in front of outdoor gas-using equipment;
• in front of the gas reduction points (GRP), with the exception of the GRP of enterprises, on the branch of the gas pipeline to which there is a shut-off valve at a distance of less than 100 m from the GRP;
• at the exit from the PWG;
• on branches from gas pipelines to settlements, individual microdistricts, quarters, groups of residential buildings (with more than 400 apartments), to a separate house, as well as on branches to industrial consumers and boiler houses;
• when crossing water barriers with two or more lines of a gas pipeline, as well as one line with a width of a water barrier with a low-water horizon of 75 m or more;
• when crossing railways of the general network and motor roads of categories I - II, if the disconnecting device that ensures the interruption of the gas supply at the crossing section is located at a distance of more than 1000 m from the roads.

At the entrance of gas pipelines to the pump-compressor and filling compartments (HPS, GNP), it is recommended to install shut-off valves with an electric drive outside the building at a distance of at least 5 and not more than 30 m from the building.

(Changed edition. Rev. No. 2)

5.1.8* Shut-off valves on above-ground gas pipelines laid along the walls of buildings and on supports should be placed at a distance (within a radius) from door and opening window openings, at least, m:

• for low pressure gas pipelines - 0.5;
• for gas pipelines of medium pressure - 1;
• for high-pressure gas pipelines of category 2 - 3;
• for high pressure gas pipelines of category 1 - 5.

Shut-off valves must be protected from unauthorized access to it by unauthorized persons.

In the areas of transit laying of gas pipelines along the walls of buildings, the installation of shut-off valves is not allowed.

Installation of shutoff valves under balconies and loggias is not allowed.

(Changed edition. Rev. No. 2)

5.1.9* At the sites of connection to the gas distribution pipeline of gas pipelines-inlets to individual buildings for various purposes, multi-apartment buildings, boiler houses and industrial consumers, it is allowed to install safety valves (controllers) of gas flow. The issue of the need to install a gas flow controller is decided by the design organization in agreement with the operating organization.

5.2 Underground gas pipelines

5.2.1 Laying of gas pipelines should be carried out at a depth of at least 0.8 m to the top of the gas pipeline, case or ballasting device, except as otherwise specified. In those places where the movement of vehicles and agricultural vehicles is not provided, the depth of laying steel gas pipelines should be at least 0.6 m. When laying gas pipelines on arable and irrigated lands, the laying depth should be at least 1.2 m to the top of the pipe.

In landslide and erosion-prone areas, gas pipelines should be laid to a depth of at least 0.5 m below the sliding mirror and below the boundary of the predicted destruction area.

(Changed edition. Rev. No. 2)

5.2.2 The vertical distance (in the light) between the gas pipeline (case) and underground utility networks and structures at their intersections is recommended to be taken in accordance with Appendix B*.

(Changed edition. Rev. No. 2)

5.2.3* At the intersection of gas pipelines with underground communication collectors and channels for various purposes, heating mains of channelless laying, as well as at places where gas pipelines pass through the walls of gas wells, it is recommended to lay the gas pipeline in a case. When crossing with heating networks, it is recommended to provide for the laying of gas pipelines in cases that are resistant to temperature effects of the medium transported through pipelines of heating networks, and in accordance with SP 124.13330.

The ends of the case are recommended to be led out at a distance of at least 2 m on both sides from the outer walls of the structures and communications being crossed, when crossing the walls of gas wells - at a distance of at least 2 cm. It is recommended to seal the ends of the case with waterproofing material.

At one end of the case at the top of the slope (except for the intersection of the walls of the wells), and at zero slopes at any end of the case, it is recommended to provide a control tube that goes under the protective device.

In the annular space of the case and the gas pipeline, it is allowed to lay an operational cable (communications, telemechanics and electrochemical protection) with a voltage of up to 60 V, intended for servicing gas distribution networks.

(Changed edition. Rev. No. 2)

5.2.4* When using polyethylene pipes and fittings for the construction of gas pipelines, the following safety factors should be applied.

When laying polyethylene gas pipelines with a pressure of up to 0.3 MPa inclusive in the territories of cities and rural settlements, pipes and fittings with a safety factor of at least 2.7 must be used.

When laying polyethylene gas pipelines with a pressure of more than 0.3 to 0.6 MPa inclusive in the territories of cities and rural settlements, pipes and fittings made of polyethylene PE 100 with a safety factor of at least 3.2 should be used. On the territory of rural settlements, when using gas pipelines made of polyethylene PE 80, the safety factor should be taken at least 3.2 or from polyethylene PE 100 with a safety factor of at least 2.6 with a laying depth of at least 0.9 m to the top of the pipe.

For inter-settlement gas pipelines with a gas pressure of more than 0.3 to 0.6 MPa, pipes made of PE 80 with SDR no more than SDR 11 or made of PE 100 with SDR no more than SDR 13.6 should be used.

It is not allowed to lay gas pipelines from polyethylene pipes for transporting gases containing aromatic and chlorinated hydrocarbons, as well as LPG gas pipelines, with the exception of the low-pressure vapor phase, and at a temperature of the gas pipeline wall under operating conditions below minus 20 ° C.

When laying gas pipelines with a pressure of more than 0.6 to 1.2 MPa inclusive for inter-settlement gas pipelines and in the industrial zone of settlements, as well as in their undeveloped part, if this does not contradict the layouts of capital construction objects provided for by the general plan of the settlement, pipes should be used PE 100 with a safety factor of at least 2.0.

The depth of laying gas pipelines must be at least 1.0 m.

(Changed edition. Rev. No. 2)

5.3 Above ground gas pipelines

5.3.1* Aboveground gas pipelines, depending on pressure, are recommended to be placed on supports made of non-combustible materials or on building structures of buildings and structures in accordance with Table 3*.

(Changed edition. Rev. No. 2)

Table 3*

(Changed edition. Rev. No. 2)

5.3.2 Transit laying of gas pipelines of all pressures along the walls and above the roofs of public, administrative and residential buildings is not allowed.

It is prohibited to lay gas pipelines of all pressures along the walls, above and below the premises of categories A and B, except for the buildings of the GRP, GRPB, GNS and GNP.

(Changed edition. Rev. No. 2)

5.3.2a Transit laying is allowed along the walls of one residential building with a medium and low pressure gas pipeline with a nominal diameter not exceeding 100 mm and at a distance below the roof (cornice) of at least 0.2 m.

(New edition. Rev. No. 2)

5.3.3* High-pressure natural gas pipelines should be laid along blank walls and sections of walls or at a height of at least 0.5 m above window and door openings, as well as other open openings of the upper floors of industrial buildings and adjoining administrative and amenity buildings. The gas pipeline must be laid below the roof (cornice) of the building at a distance of at least 0.2 m.

Medium-pressure natural gas pipelines may also be laid along sashes or mullions of non-opening windows and window openings of industrial buildings and boiler rooms filled with glass blocks.

The laying of low-pressure gas pipelines, in addition to the above types, is also allowed between windows at a distance of at least 0.2 m from each window.

(Changed edition. Rev. No. 2)

5.3.4 The height of the laying of aboveground gas pipelines should be taken not less than that established in SP 18.13330.

(Changed edition. Rev. No. 2)

5.3.5 On pedestrian and automobile bridges built of non-combustible materials, it is allowed to lay gas pipelines with a pressure of up to 0.6 MPa of electric-welded pipes that have passed 100% control of factory welded joints by physical methods, or seamless pipes. Laying of gas pipelines on pedestrian and automobile bridges built of combustible materials is not allowed. The laying of the gas pipeline along the bridges must prevent the ingress of gas into the closed spaces of the bridges.

(Changed edition. Rev. No. 2)

5.4 Crossing of water barriers and ravines by gas pipelines

5.4.1* Underwater and surface gas pipelines in places where they cross water barriers (rivers, streams, reservoirs, bays, canals, etc.) should be placed at a horizontal distance from bridges in accordance with Table 4.

Table 4

5.4.2 Gas pipelines at underwater crossings should be laid deep into the bottom of the crossed water barriers. Ballasting of the gas pipeline should be carried out with its positive buoyancy, determined by the results of the ascent calculation. The mark of the top of the gas pipeline (ballast, lining) must be at least 0.5 m, and at crossings through navigable and raftable water barriers - 1.0 m below the predicted bottom profile for the entire life of the gas pipeline. When laying a gas pipeline using directional drilling, the mark must be at least 2.0 m below the predicted bottom profile.

(Changed edition. Rev. No. 2)

5.4.3 At underwater crossings, regardless of the laying method, the following should be used:

• steel pipes with a wall thickness of 2 mm more than the calculated one, but not less than 5 mm;
• polyethylene pipes and fittings made of PE 100 with an SDR not exceeding SDR 11.

When laying a polyethylene gas pipeline with a pressure of more than 0.6 to 1.2 MPa by the method of directional drilling, in all cases, polyethylene pipes made of PE 100 or PE 100 / PE 100-RC with a safety factor of at least 2.0 should be used, and at pressure gas up to 0.6 MPa, in addition to pipes made of polyethylene PE 100, it is allowed to use pipes made of PE 80 with SDR not more than SDR 11.

At underwater crossings up to 25 m wide with a low-water horizon outside settlements, and when laying a gas pipeline with a pressure of up to 0.6 MPa, it is allowed to use pipes made of PE 80 with SDR 11 in a protective sheath, and when laying a gas pipeline with a pressure of more than 0.6 to 1, 2 MPa by directional drilling, in all cases polyethylene pipes made of PE 100 in a protective sheath or PE 100/PE 100-RC with a safety factor of at least 2.0 should be used.

(Changed edition. Rev. No. 2)

5.4.4 The height of laying the surface crossing of the gas pipeline from the calculated level of water rise or ice drift [high water horizon (HWH) or ice drift (HWL)] to the bottom of the pipe or span should be taken:

• when crossing streams, ravines and ravines - not less than 0.5 m above the GVV 5% security;
• when crossing non-navigable and non-alloyable rivers - at least 0.2 m above the GVV and GVL 2% security, and if there is a stump walker on the rivers - taking it into account, but not less than 1 m above the GVV 1% security (taking into account surge waves);
• when crossing navigable and raftable rivers - not less than the values ​​established by the design standards for bridge crossings on navigable rivers.

Shut-off valves should be located at least 10 m from the borders of the transition or areas subject to erosion or landslides. The transition boundary is taken to be the places where the gas pipeline crosses the high water horizon with a 10% security.

(Changed edition. Rev. No. 2)

5.5 Gas pipelines crossing railways, trams and roads

5.5.1 Horizontal distances from the intersections of underground gas pipelines of tram and railway tracks, highways, main streets and roads are recommended to be taken, m, not less than:

• to bridges and tunnels on railways of general networks and external railway sidings of enterprises, tram tracks, motor roads of categories I - III, main streets and roads, as well as to pedestrian bridges, tunnels through them - 30, and for internal railway sidings of enterprises , motor roads of categories IV - V and culverts - 15;
• to the turnout zone (the beginning of the wits, the tail of the crosses, the places where suction cables are attached to the rails) and other track crossings) - 4 for tram tracks and 20 for railways;
• to the supports of the contact network - 3.

(Changed edition. Rev. No. 2)

5.5.2* Underground gas pipelines of all pressures at intersections with railway and tram tracks, motor roads of categories I - IV, as well as with main streets and roads should be laid in cases. In other cases, the need for the device cases should be determined by the design organization. The length of the case at the intersection of gas pipelines with railway lines of the general network and external access railway lines of enterprises should be taken in accordance with SP 119.13330.

Cases must be non-metallic or steel tubing and meet strength and durability requirements. At one end of the case, a control tube should be provided, as well as a control conductor for steel cases, going under the protective device.

A control conductor should be provided to determine the presence (absence) of the “pipe-case” contact.

(Changed edition. Rev. No. 2)

5.5.3 When gas pipelines cross railways of the general network and external access railway lines of enterprises, it is recommended to remove the ends of the cases at a distance from them not less than those established by SP 119.13330.

When underground gas pipelines cross tram tracks, internal access railway lines of enterprises, highways, main streets and roads, it is recommended to place the ends of the cases at a distance:

• at least 2 m from the bottom of the subgrade (the axis of the extreme rail at zero marks) of the tram track, internal access railway lines of enterprises;
• not less than 2 m from the curb, shoulder, slope foot of the embankment of highways, main streets and roads;
• at least 3 m from the edge of drainage structures (ditch, ditches, reserve).

(Changed edition. Rev. No. 2)

5.5.4 When gas pipelines cross railways of the general network and external access railway lines of enterprises, the laying depth of the gas pipeline must comply with the requirements of SP 119.13330.

In other cases, the depth of laying the gas pipeline from the bottom of the rail or the top of the road pavement and main streets and roads from the bottom of the embankment to the top of the case must comply with safety requirements, but be at least, m:

• 1.0 - when designing a gasket in an open way;
• 1.5 - when designing a gasket by punching or directional drilling and shield penetration;
• 2.5 - when designing the gasket by the puncture method.

When designing the laying of a gas pipeline by other methods, the depth of laying the gas pipeline should be taken taking into account the requirements of technical and operational documentation and safety.

Laying of gas pipelines in the body of embankments of roads and main streets is not allowed, except for specified cases.

(Changed edition. Rev. No. 2)

5.5.5* The wall thickness of pipes of a steel gas pipeline when it crosses public railway tracks and external railway sidings of the enterprise must be 2–3 mm higher than the calculated one, but not less than 5 mm at distances of 50 m to each side from the foot of the slope of the embankment or the axis of the extreme rail at zero.

For polyethylene gas pipelines at these sections and at the intersections of highways of categories I - III, main streets and roads, pipes and fittings with SDR not more than SDR 11 with a safety factor of at least 3.2 should be used for gas pipelines laid in cities and rural areas points. For inter-settlement gas pipelines with pressure over 0.3 to 0.6 MPa, pipes made of PE 80 and PE 100 or PE 100 / PE 100-RC with a safety factor of at least 2.5 should be used, for inter-settlement gas pipelines with pressure over 0.6 to 1.2 MPa, pipes made of PE 100 or PE 100/PE 100-RC with a safety factor of at least 2.0 should be used.

(Changed edition. Rev. No. 2)

5.6 Additional requirements for gas pipelines in special conditions

5.6.1* Special conditions include:

• heaving (except slightly heaving);
• subsidence (except subsidence soils of type I subsidence);
• swelling (except for weakly swelling);
• permafrost soils;
• rocky soils;
• eluvial soils;
• construction sites with a seismic activity of more than 6 points;
• undermined territories, except for group IV, subject to the conclusion of a mine surveying service;
• karst territories, except for sustainability category VI (construction of gas distribution and gas consumption networks in the territories of sustainability categories I, II is not allowed);
• other natural and technogenic conditions under which negative impacts on the gas pipeline are possible (landslides, landslides, mudflows, snow avalanches, processing of the shores of lakes, rivers, reservoirs, etc.).

For cities with a population of more than 1 million people with a seismicity of the area of ​​​​more than 6 points, as well as cities with a population of more than 100 thousand people with a seismicity of the area of ​​\u200b\u200bmore than 7 points, gas supply from two or more sources - GDS should be provided. At the same time, high and medium pressure gas pipelines should be designed as looped ones with their division into sections by shutoff valves.

In the absence of the possibility of connecting cities and towns to two or more sources - GDS, gas supply should be carried out from one source if the consumer has reserve fuel, the disconnection of which is unacceptable.

(Changed edition. Rev. No. 2)

5.6.2* Crossings of gas pipelines through water barriers up to 80 m wide with a GWT of 2% security, ravines and railway tracks in excavations laid at construction sites with a seismic activity of more than 6 points, should be provided above ground from steel pipes or underground from polyethylene pipes in a protective shell. With a width of crossings through water barriers with a width of more than 80 m GWV with a 2% security, an above-ground laying of steel pipes, as well as an underground laying of steel pipes or polyethylene pipes in a protective sheath, should be provided. Limiters for the movement of gas pipeline supports during the above-ground laying of the gas pipeline must ensure its free movement and exclude the possibility of dropping from the supports.

5.6.3 When designing underground gas pipelines at construction sites with a seismic activity of more than 6 points, in undermined and karst territories, control pipes should be provided for:

• at intersections with other utility networks;
• at the corners of turns of gas pipelines (except for those made by elastic bending);
• at network branching points;
• at transitions from underground laying to aboveground;
• at the locations of transitions polyethylene - steel;
• in places of tie-in;
• in places of underground inputs to buildings;
• on linear sections of steel gas pipelines within cities and rural settlements at characteristic points, but at least every 100 m.

5.6.4 With uniform heaving of soils, the depth of laying the gas pipeline to the top of the pipe should be, m:

• not less than 0.7 of the estimated freezing depth, but not less than 0.9 for medium heaving soils;
• not less than 0.8 of the calculated freezing depth, but not less than 1.0 for strongly and excessively heaving soils.

In soils of unequal degree of heaving, the depth of laying gas pipelines to the top of the pipe must be at least 0.9 of the estimated freezing depth, but not less than 1.0 m.

5.6.4a In sections of the gas pipeline route located from the boundaries of soils with different deformations in both directions at a distance equal to 50 nominal diameters of gas pipelines, measures should be taken to reduce stresses in the gas pipeline (installation of expansion joints, backfilling of the gas pipeline with non-crushing soil).

5.6.5 When designing gas pipelines under special conditions, one should be guided by this section, as well as the mandatory clauses given in SP 14.13330, SP 21.13330, SP 116.13330.

(New edition. Rev. No. 2)

5.6.6 If the seismicity of the construction site is more than 6 points, in undermined and karst areas, in areas of permafrost soils for polyethylene gas pipelines, the following should be used: pipes and fittings with SDR not more than SDR 11 from PE 100 or from PE 100 / PE 100-RC with a safety factor of at least 3.2 for gas pipelines laid in the territories of cities and rural settlements, and at least 2.0 for inter-settlement gas pipelines.

At gas pressure in gas pipelines with a pressure of up to 0.3 MPa, polyethylene pipes and fittings made of PE 80, PE 100 or PE 100 / PE 100-RC with an SDR of not more than SDR 11 should be used.

(Changed edition. Rev. No. 2)

5.6.6a When laying gas pipelines in rocky and semi-rocky soils, steel pipes made of polyethylene with a protective sheath PE 80, PE 100 or PE 100/PE 100-RC should be used. To protect the insulating coating of steel gas pipelines, a foundation for a gas pipeline with a thickness of at least 10 cm from coarse or medium-grained sand should be provided. When using pipes made of polyethylene with a protective sheath PE 80, PE 100 or PE 100/PE 100-RC, the base for the gas pipeline must be leveled.

(New edition. Rev. No. 2)

5.6.7 (Deleted Rev. No. 2)

5.7 Reconstruction (rehabilitation) of worn-out underground steel gas pipelines

(New edition. Rev. No. 2)

5.7.1 * For the restoration and overhaul of underground steel gas pipelines, the following are used:

• in cities and rural areas:
• at a pressure of natural gas up to 0.3 MPa inclusive - drawing in a gas pipeline of pipes made of polyethylene PE 80 and PE 100 with a safety factor of at least 2.6 without welded joints or connected using parts with ZN, or butt-welded using welding equipment high degree of automation;
• at a natural gas pressure of more than 0.3 to 0.6 MPa inclusive - drawing pipes made of polyethylene PE 80 and PE 100 with a safety factor of at least 3.2 in the gas pipeline without welded joints or connected using parts with a ZN or butt welding using welding equipment with a high degree of automation;
• at a pressure of natural gas up to 1.2 MPa inclusive - lining the cleaned inner surface of gas pipelines with a synthetic fabric hose on a special two-component adhesive, subject to confirmation in the prescribed manner of their suitability for these purposes for the specified pressure or in accordance with the standards (technical specifications), the scope of which extends to this pressure;
• outside settlements and urban districts:
• at a pressure of natural gas up to 0.6 MPa inclusive - pulling in the gas pipeline of pipes made of polyethylene PE 80 and PE 100 with a safety factor of at least 2.6 without welded joints or connected using parts with ZN or butt welding using high-grade welding technology automation;
• at a natural gas pressure of more than 0.6 to 1.2 MPa inclusive - drawing pipes made of polyethylene PE 100 in the gas pipeline with a safety factor of at least 2.0 without welded joints or connected using parts with ZN or butt welding using high-tech welding equipment degree of automation. The space between a polyethylene pipe and a worn-out steel gas pipeline (frame) with natural gas pressure over 0.6 to 1.2 MPa inclusive must be filled (if possible) along the entire length with a sealing (sealing), for example, foam material;
• at a pressure of natural gas up to 1.2 MPa inclusive - lining the cleaned inner surface of gas pipelines with a synthetic fabric hose on a special two-component adhesive, subject to confirmation in the prescribed manner of their suitability for these purposes for the specified pressure or in accordance with the standards (technical specifications), the scope of which applies to this pressure.

When pulling, polyethylene pipes are used without a protective sheath, with a protective sheath, with co-extrusion layers PE 100/PE 100-RC. When pulling a polyethylene gas pipeline inside metal pipes, measures should be taken to prevent its mechanical damage.

It is also allowed to use other reconstruction (restoration) technologies provided for by GOST R 56290.

(Changed edition. Rev. No. 2)

5.7.2 Reconstruction (restoration) and overhaul of worn out steel gas pipelines may be carried out while maintaining:

Intersections of restored areas with underground utilities without installing additional cases;

Depths of laying of the restored gas pipelines;

Distances from the restored gas pipeline to buildings, structures and networks of engineering and technical support according to its actual location, if the pressure in the restored gas pipeline does not change or when the pressure in the restored gas pipeline rises to 0.3 MPa.

Restoration of worn-out steel gas pipelines with the possibility of increasing pressure to high pressure is allowed if the distances to buildings, structures and utility networks meet the requirements for a high-pressure gas pipeline.

(Changed edition. Rev. No. 2)

5.7.3 * The ratio of the dimensions of polyethylene and steel pipes during restoration and overhaul by the pulling method is selected based on the possibility of free passage of polyethylene pipes and parts inside steel pipes and ensuring the integrity of polyethylene pipes. It is recommended to seal the ends of reconstructed (restored) and overhauled sections between new polyethylene and worn steel pipes.