Snips and guests on the main pipeline. Regulations

BUILDING REGULATIONS

MAIN PIPING

SNiP 2.05.06-85*

Moscow 1997

DEVELOPED VNIIST Minneftegazstroya (candidate of technical sciences - head of the theme, candidates tech. Sciences , engineer . L.A.Soloviev, tech candidates. Sciences , A.S. Bolotov, N.P. Glazov,) with participation of YuzhNIIGiprogaz ( And ), USSR State Gas Supervision R.G. Toropova), VNIIGaz Mingazprom (Ph.D. And 3. I. Nefedova), Gipropipeline Minnefteprom (B. A. Alimov) and MINHIGP them. Ministry of higher education of the USSR (Dr. of technical sciences, prof. L.G. Telegin).

INTRODUCED by Minneftegazstroy.

PREPARED FOR APPROVAL by Glavtekhnormirovanie Gosstroy USSR ().

PREPARED FOR RE-ISSUATION by the Department of Technical Regulation of the Ministry of Construction of Russia ( )

SNiP 2.05.06-85* is a reissue of SNiP 2.05.06-85 with amendments No. 1, No. 2, approved by resolutions of the USSR Gosstroy of January 8, 1987 No. 1, of 01.01.01 No. 61, and amendment No. 3, approved by the Decree of the Ministry of Construction of Russia dated 01.01.01 No. 18-78.

Items and tables that have been amended are marked in these building codes and rules with an asterisk.

When using a regulatory document, one should take into account the approved changes in building codes and regulations and state standards, published in the journal "Bulletin of Construction Equipment" of the USSR State Construction Committee and the information index "State Standards of the USSR" of the State Standard.

1. General Provisions

2. Classification and categories of main pipelines

3. Basic requirements for the pipeline route

4. Design requirements for pipelines

Placement of shut-off and other valves on pipelines

5. Underground piping

Laying pipelines in the mountains

Laying pipelines in mining areas

Laying pipelines in seismic areas

Laying pipelines in areas of permafrost

6. Pipeline crossings through natural and artificial obstacles

Underwater crossings of pipelines through water barriers

Underground crossings of pipelines through railways and roads

7. Above ground piping

8. Calculation of pipelines for strength and stability

Design characteristics of materials

Loads and impacts

Determination of the wall thickness of pipelines

Checking the strength and stability of underground and surface (in the embankment) pipelines

Testing the strength and stability of above-ground pipelines

Compensators

Features of the calculation of pipelines laid in seismic regions

Pipe fittings

9. Environmental protection

10. Corrosion protection of pipelines

Protecting pipelines from underground corrosion with protective coatings

Protection of above-ground pipelines from atmospheric corrosion

Electrochemical protection of pipelines from underground corrosion

Electrochemical protection of pipelines in permafrost areas

11. Technological communication lines of pipelines

12. Design of pipelines for liquefied hydrocarbon gases

13. Materials and products

General provisions

Pipes and fittings

Welding consumables

Products for securing pipelines against ascent

Materials used for anti-corrosion coatings of pipelines

These standards apply to the design of new and reconstructed main pipelines and branches from them with a nominal diameter of up to 1400 mm inclusive. with an overpressure of the medium over 1.2 MPa (12 kgf/cm2) up to 10 MPa (100 kgf/cm2) (with a single laying and laying in technical corridors) for transportation:

a) oil, oil products (including stable condensate and stable gasoline), natural, petroleum and artificial hydrocarbon gases from the areas of their extraction (from fields), production or storage to places of consumption (oil depots, transshipment bases, loading points, gas distribution stations, individual industrial and agricultural enterprises and ports);

b) liquefied hydrocarbon gases of fractions C3 and C4 and their mixtures, unstable gasoline and petroleum gas condensate and other liquefied hydrocarbons with a saturated vapor pressure at a temperature of plus 40 ° C not more than 1.6 MPa (16 kgf / cm2) from their production areas ( trades) or production (from head pumping stations) to the place of consumption;

c) marketable products within compressor (CS) and oil pumping stations (OPS), underground gas storage stations (UGS), booster compressor stations (BCS), gas distribution stations (GDS) and gas flow measurement units (UZRG);

d) impulse, fuel and start-up gas for CS, SPHG, BCS, GDS, UZRG and gas reduction points (PRG).

Main pipelines include:

pipeline (from the point of exit from the field of commercial products prepared for long-distance transport) with branches and loopings, shut-off valves, crossings through natural and artificial obstacles, connection points for PS, CS, UZRG, PRG, start-up and reception units for treatment devices, condensate collectors and devices for methanol input;

installations for electrochemical protection of pipelines against corrosion, lines and facilities for technological communication, telemechanics for pipelines;

power lines intended for maintenance of pipelines and power supply and remote control of shut-off valves and installations of electrochemical protection of pipelines;

fire-fighting means, anti-erosion and protective structures of pipelines;

tanks for storage and degassing of condensate, earthen barns for emergency release of oil, oil products, condensate and liquefied hydrocarbons;

buildings and structures of the linear service for the operation of pipelines;

Approved
resolution
Gosstroy of the USSR
dated 01.01.01 No. 30

Term
introductions
into action
January 1, 1986

The design of gas pipelines with a pressure of 1.2 MPa (12 kgf/cm2) and less, oil pipelines and oil product pipelines with a pressure of up to 2.5 MPa (25 kgf/cm2) intended for laying on the territory of settlements or individual enterprises should be carried out in accordance with the requirements of SNiP 2.04.08-87*, SNiP 2.11.03-93 and SNiP 2.05.13-83.

1. GENERAL PROVISIONS

1.1. Main pipelines (gas pipelines, oil pipelines and oil product pipelines)1 should be laid underground (underground laying).

Laying pipelines on the surface of the earth in an embankment (ground laying) or on supports (above ground laying) is allowed only as an exception with appropriate justification in the cases specified in clause 7.1. At the same time, special measures should be provided to ensure reliable and safe operation of pipelines.

1 In the text of the norms, except where otherwise specified, the word "pipeline(s)" will be used instead of the words: "main pipeline(s)".

1.2. Laying of pipelines can be carried out singly or in parallel with other existing or planned main pipelines - in the technical corridor.

1.3. The technical corridor of main pipelines should be understood as a system of parallel pipelines along one route, intended for the transportation of oil (oil products, including liquefied hydrocarbon gases) or gas (gas condensate).

In some cases, with a feasibility study and the condition of ensuring the reliability of the pipelines, it is allowed to jointly lay oil pipelines (petroleum products pipelines) and gas pipelines in one technical corridor.

1.4. The maximum allowable (total) volumes of transportation of products within one technical corridor and the distances between these corridors are determined in accordance with building codes and rules approved in the prescribed manner.

1.5. It is not allowed to lay main pipelines through the territories of settlements, industrial and agricultural enterprises, airfields, railway stations, sea and river ports, marinas and other similar objects.

1.6. To ensure normal operating conditions and exclude the possibility of damage to main pipelines and their facilities, security zones are established around them, the size of which and the procedure for carrying out agricultural and other work in these zones are regulated by the Rules for the Protection of Main Pipelines.

1.7. The temperature of gas, oil (petroleum products) entering the pipeline should be set based on the possibility of transporting the product and the requirements for the safety of insulating coatings, strength, stability and reliability of the pipeline.

The need and degree of cooling of the transported product is decided during the design.

1.8. Pipelines and their structures should be designed taking into account the maximum industrialization of construction and installation works through the use, as a rule, of pipes with factory insulation and prefabricated structures in a block-complete design from standard and standard elements and parts manufactured at factories or in stationary conditions, providing their quality production. At the same time, the decisions adopted in the project should ensure uninterrupted and safe operation of pipelines.

2. CLASSIFICATION AND CATEGORIES OF MAIN PIPELINES

2.1 . Main gas pipelines, depending on the operating pressure in the pipeline, are divided into two classes:

I - at operating pressure over 2.5 to 10.0 MPa (over 25 to 100 kgf/cm2) inclusive;

II - at operating pressure over 1.2 to 2.5 MPa (over 12 to 25 kgf/cm2) incl.

2.2. Main oil pipelines and oil product pipelines, depending on the diameter of the pipeline, are divided into four classes, mm:

I - with nominal diameter over 1000 to 1200 inclusive;

II - the same, over 500 to 1000 inclusive;

III - the same, over 300 to 500 inclusive;

IV - 300 or less.

2.3. Main pipelines and their sections are divided into categories, the requirements for which, depending on the operating conditions, the scope of non-destructive testing of welded joints and the magnitude of the test pressure, are given in Table. 1.

Table 1

	The coefficient of pipeline operation conditions when calculating it for strength, stability and deformabilitym	Number of field welded joints to be controlled by physical methods, % of the total	The pressure value during the test and the duration of the pipeline test
		accepted

		SNiP III-42-80*


Note. When testing a pipeline for its linear part, it is allowed to increase the pressure to a value that causes stress in the pipe metal to the yield point, taking into account the minus tolerance for wall thickness.

table 2

2.5 . Categories of sections of main pipelines should be taken according to Table. 3*.

Table 3*

Assignment of pipeline sections
gas pipelines during laying	oil pipelines and oil product pipelines
underground	ground	elevated	underground	ground	elevated
1. Crossings through water barriers:
a) navigable - in the channel part and coastal sections with a length of at least 25 m each (from the average water horizon) with a pipeline diameter, mm:
1000 or more

b) non-navigable water levels at low water of 25 m or more - in the channel part and coastal sections with a length of at least 5 m each (from the average low water horizon) with a pipeline diameter, mm:
1000 or more

c) non-navigable water mirrors up to 25 m wide at low water - in the channel part, irrigation and diversion canals
d) mountain streams (rivers)
e) river floodplains along the high water horizon of 10% probability with a pipeline diameter, mm:
700 and more

f) sections with a length of 1000 m from the boundaries of the high water horizon with 10% security
2. Crossings through the swamps of the type:



1 II - for a diameter of 700 mm or more, III - for a diameter of up to 700 mm.
3. Crossings through railways and roads (on stages):
a) railways of the general network, including sections 40 m long each on both sides of the road from the axes of the outermost tracks, but not less than 25 m from the bottom of the embankment of the road subgrade
b) access railways of industrial enterprises, including sections 25 m long each on both sides of the road from the axes of the outer tracks
c) motor roads of category I and II, including sections 25 m long each on both sides of the road from the bottom of the embankment or the edge of the excavation of the subgrade of the road
d) motor roads II, III-p, IV, IV-p categories, including sections 25 m long each on both sides of the road from the bottom of the embankment or the edge of the excavation of the subgrade of the road
e) motor roads of category V, including sections 15 m long on both sides of the road from the bottom of the embankment or the edge of the excavation of the subgrade
e) sections of pipelines within the distances indicated in table. 4 adjacent to the transitions:
through all railways and highways of categories I and II
through highways III, IV, III-p, IV-p and V categories
4. Pipelines in mountainous areas when laying:
a) on the shelves
b) in the tunnels
5. Pipelines laid in loosely bound dune sands in desert conditions
6. Pipelines laid on irrigated and irrigated lands:
a) cotton and rice plantations
b) other crops
7. Pipelines laid across the territory of distribution of permafrost soils, which, during thawing, have a relative settlement of more than 0.1
8. Crossings through debris flows, alluvial fans and solonchak soils
9.* Units for installing linear fittings (with the exception of sections of categories B and I)
10. Gas pipelines for a length of 250 m from linear shut-off valves and underwater crossing combs (with the exception of sections of category B and I)
11. Pipelines at a length of 100 m from the boundaries of adjacent sections of category II, given in pos. 3rd
12. Pipelines adjacent to the territories of UGS facilities, gas treatment and drying plants, head structures from the side of collectors and pipelines within the distances specified in pos. 5 tab. 4
13. Interfield collectors
14. Nodes for launching and receiving treatment devices, as well as sections of pipelines 100 m long adjacent to them
15. Pipelines within the territories of the PRG of the linear part of gas pipelines
16.* Pipelines located inside the buildings and within the territories of the CS, PRG, SPGS, DKS, GDS, PS, UZRG, including fuel and start-up gas pipelines
17.* Connection points to the gas pipeline, sections between security valves, suction and discharge gas pipelines of the CS, SPKhG, GTP, UPPG, BCS (loops) and head structures, as well as auxiliary gas pipelines from the connection point to the fencing of the territories of these structures
18. Gas pipelines adjacent to the GDS within the distances specified in pos. 8 tab. 4, as well as sections behind security cranes 250 m long
19. Pipelines adjacent to the secant crane UZRG and PRG, 250 m long in both directions
20. Intersections with underground utilities (sewer collectors, oil pipelines, oil product pipelines, gas pipelines, power and communication cables, underground, surface and aboveground irrigation systems, etc.) within 20 m on both sides of the intersected communications
21. Intersections with communications given in pos. 20, and between themselves multi-line main gas pipelines with a diameter of more than 1000 mm and a pressure of 7.5 MPa (75 kgf / cm2) and more and oil pipelines with a diameter of more than 700 mm within 100 m on both sides of the crossed communication
22. Crossings (in both directions) within the distances specified in pos. 12 tab. 4*, with overhead power lines voltage, kV:
a) 500 or more
b) from 330 to 500

23. Pipelines laid on undermined territories and territories subject to karst phenomena
24. Crossings through ravines, beams, ditches and drying up streams
25. Oil pipelines and oil product pipelines laid along rivers with a water mirror width of 25 m or more in low water, canals, lakes and other reservoirs of fishery importance, above settlements and industrial enterprises at a distance. distance from them up to 300 m with a pipe diameter of 700 mm or less; up to 500 m with pipe diameter up to 1000 mm inclusive; up to 1000 m with pipe diameters over 1000 mm
			(without preliminary hydraulic test on the track)
26*. Gas pipelines, oil and oil product pipelines laid in the same technical corridor, at the locations of the UZRG, PRG, units for installing linear shut-off valves, starting and receiving treatment devices, units for connecting CS, GTP, UPPG, SPHG, BCS, GS into the pipeline within distances specified in pos. 9, 10, 14 and 15, 17 and 19, and from the CS connection points to the pipeline within 250 m on both sides of them
(if they do not belong to a higher category according to the type of gasket and other parameters)
Notes: 1. Categories of individual sections of pipelines, emergency damage to which can cause interruptions in the supply of gas, oil and oil products to cities and other large consumers of great economic importance, as well as environmental pollution, with appropriate justification, may be increased by one category. 2. Types of swamps should be taken in accordance with the requirements of SNiP III -42-80 . 3. When the pipeline crosses an array of swamps of various types, with appropriate justification, it is allowed to accept the category of the entire section as for the highest category in this array of swamps. 4. Testing of sections of pipelines laid through water barriers with a water level at low water less than 10 m should be provided as part of the installed pipeline in one stage. 5. Operating pipelines that are in a satisfactory technical condition (according to the conclusion of the representatives of the customer of the facility under construction, the operating organization and the relevant state supervision authority), when they are crossed by the pipelines being designed, power lines, as well as underground utilities indicated in pos. 20 and 21, and with parallel laying in accordance with pos. 26* cannot be replaced by pipelines of a higher category. 6. Operating pipelines crossed by railways and roads under construction are subject to reconstruction in accordance with pos. 3. 7. The category of sections of pipelines laid in the floodplains of rivers subject to flooding under the reservoir should be taken as for crossings through navigable water barriers. 8. With a short duration of flooding by flood waters (less than 20 days) and an insignificant depth of this flooding, which allows prompt emergency and restoration work on pipelines in the area in case of damage, fulfillment of the requirements of pos. 1d for gas pipelines is not necessary. for shipping - according to pos. 1a; for non-navigable - according to pos. 1b and 1c.

3. BASIC REQUIREMENTS FOR THE ROUTE OF PIPELINES

3.1. The choice of the route of pipelines should be made according to the criteria of optimality. The given costs during the construction, maintenance and repair of the pipeline during operation, including the costs of measures to ensure the safety of the environment, as well as metal consumption, structural laying schemes, safety, specified construction time, availability of roads, etc., should be taken as optimality criteria.

3.2. Land plots for the construction of pipelines should be selected in accordance with the requirements stipulated by the current legislation of the Russian Federation.

When choosing a route, the conditions of construction should be taken into account in order to ensure that the most efficient, economical and high-performance methods of construction and installation work are used.

3.3. The choice of the path between the start and end points must be made within the search area defined by the ellipse, in the focus of which are the start and end points.

Ellipse minor axis b , km, is determined by the formula

Where l- distance between the start and end points along the geodesic line, km;

K p - coefficient of development of the pipeline line.

Development factor of the pipeline line K p should be determined from the condition

Where W cf. o - reduced costs per 1 km of the pipeline along the geodesic line between the start and end points, taking into account the transitions through obstacles;

W cf. n - reduced costs per 1 km of the pipeline along the geodesic line between the start and end points without the cost of crossing natural and artificial obstacles.

3.4. Compensation for losses to land users and losses of agricultural production during land acquisition for the construction of a pipeline and damage to fisheries should be determined in the prescribed manner.

3.5. For access to the pipelines, the existing roads of the general network should be used as much as possible.

The construction of new roads and road structures should be envisaged only if there is sufficient justification and it is impossible to bypass obstacles on existing public roads.

3.6. When choosing a pipeline route, it is necessary to take into account the prospective development of cities and other settlements, industrial and agricultural enterprises, railways and roads and other facilities and the projected pipeline for the next 20 years, as well as the conditions for the construction and maintenance of the pipeline during its operation (existing, under construction, designed and reconstructed buildings and structures, melioration of wetlands, irrigation of desert and steppe regions, use of water bodies, etc.), forecast changes in natural conditions during the construction and operation of main pipelines.

3.7. It is not allowed to provide for the laying of main pipelines in tunnels of railways and highways, as well as in tunnels together with electrical and communication cables and pipelines for other purposes belonging to other ministries and departments.

3.8.* It is not allowed to lay pipelines on bridges of railways and highways of all categories and in the same trench with electrical cables, communication cables and other pipelines, except for the cases of laying:

technological communication cable of this pipeline at underwater crossings (in one trench) and at crossings through railways and roads (in one case);

gas pipelines with a diameter of up to 1000 mm for a pressure of up to 2.5 MPa (25 kgf / cm2) and oil pipelines and oil product pipelines with a diameter of 500 mm or less along fireproof bridges of highways III, III-p, IV-p, IV and V categories. At the same time, sections of pipelines laid along the bridge and on the approaches to it at the distances indicated in Table. 4 should be classified as Category I.

3.9. The laying of pipelines over bridges (in the cases given in clause 3.8), along which long-distance communication cables are laid, is allowed only upon agreement with the USSR Ministry of Communications.

3.10. Pipeline laying in landslide areas should be provided below the sliding surface or above ground on supports buried below the sliding surface to a depth that excludes the possibility of displacement of the supports.

3.11. The route of pipelines crossing mudflows should be chosen outside the zone of dynamic flow shock.

3.12. When choosing a route for underground pipelines on permafrost soils, areas with underground ice, icing and heaving mounds, manifestations of thermokarst, slopes with ice-saturated, clayey and waterlogged silty soils should be avoided if possible. Heaving bumps should be bypassed from the bottom side.

3.13. The main principle of using permafrost soils as a foundation for pipelines and their structures is principle I, according to SNiP 2.02.04-88, in which the permafrost foundation soils should be used in a frozen state, maintained during the construction process and throughout the entire specified period of operation of the pipeline.

1 area of use

1.1 This set of rules applies to the design of new and reconstructed main pipelines and branches from them with a nominal diameter up to DN 1400 inclusive, with an overpressure of the medium in excess of 1.2 to 10 MPa inclusive (with a single laying and laying in technical corridors) for transportation:

b) liquefied hydrocarbon gases of fractions C3 and C4 and their mixtures, unstable gasoline and petroleum gas condensate and other liquefied hydrocarbons with a saturated vapor pressure at a temperature of plus 40 ° C not more than 1.6 MPa from areas of their extraction (fields) or production (from head pumping stations) to the place of consumption;

c) marketable products within the compressor station, oil pumping station, pumping station, underground gas storage stations, booster compressor station, gas distribution station and gas flow metering unit;

d) impulse, fuel and starting gas for CS, SPHG, BCS, GDS, UZRG and gas reduction point (hereinafter referred to as GRG).

This set of rules does not apply to the design of pipelines laid on the territory of cities and other settlements, with the exception of trunk oil pipelines laid to connect them to enterprises for processing, transshipment and storage of oil, in marine areas and fields, as well as pipelines intended for transporting gas , oil, oil products and liquefied hydrocarbon gases that have a corrosive effect on the metal of pipes or cooled to a temperature below minus 40 ° C.

The design of pipelines intended for the transportation of stable condensate and stable gasoline should be carried out in accordance with the requirements of this set of rules for oil pipelines. Stable condensate and gasoline should include hydrocarbons and their mixtures having a saturated vapor pressure of less than 0.2 MPa (abs) at a temperature of plus 20 °C.

1.2 Design of pipelines for liquefied hydrocarbons with saturated vapor pressure at a temperature of plus 20 °C above 0.2 MPa - liquefied hydrocarbon gases, unstable gasoline and unstable condensate and other liquefied hydrocarbons - should be carried out in accordance with the requirements of section 16. Design of buildings and structures, in including engineering communications located at the sites of compressor stations, pump stations, substations, GDS, UGS facilities and BCS, should be carried out in accordance with the requirements of technical regulations, standards, other regulatory documents in the field of technical regulation that apply to the design of relevant buildings and structures, taking into account the requirements of this set of rules. The design of gas pipelines with a pressure of 1.2 MPa or less and oil product pipelines with a pressure of up to 2.5 MPa, intended for laying in the territory of settlements or individual organizations, should be carried out in accordance with the requirements of SP 62.13330, SP 110.13330 and SP 125.13330, technical regulations, standards and others normative documents in the field of technical regulation.

This set of rules uses references to the following regulatory documents: GOST R 51164-98 Main steel pipelines. General requirements for corrosion protection GOST R 52568-2006 Steel pipes with protective outer coatings for main gas and oil pipelines. Specifications GOST 9.602-2005 Unified system of protection against corrosion and aging. Underground structures. General requirements for corrosion protection GOST 2246-70 Welding steel wire. Specifications GOST 3845-75 Metal pipes. Hydraulic pressure test method GOST 5457-75 Technical dissolved and gaseous acetylene. Specifications GOST 5494-95 Aluminum powder. Specifications GOST 5583-78 Industrial and medical gaseous oxygen. Specifications GOST 6996-66 Welded joints. Methods for determining mechanical properties GOST 8050-85 Gaseous and liquid carbon dioxide. Specifications GOST 9087-81* Fused welding fluxes. Specifications GOST 9238-83 Approach dimensions of buildings and rolling stock of 1520 (1524) mm gauge railways GOST 9454-78 Metals. Test method for impact bending at low, room and high temperatures GOST 9466-75 Coated metal electrodes for manual arc welding of steels and surfacing. Classification and general specifications GOST 9467-75 Coated metal electrodes for manual arc welding of structural and heat-resistant steels. Types GOST 9544-2005 Shut-off valves. Classes and norms of tightness of gates GOST 10157-79 Gaseous and liquid argon. Specifications GOST 12821-80 Butt-welded steel flanges for Ru from 0.1 to 20 MPa (from 1 to 200 kgf/cm2). Design and dimensions GOST 13109-97 Electrical energy. Compatibility of technical means is electromagnetic. Standards for the quality of electrical energy in general-purpose power supply systems GOST 20448-90 Liquefied hydrocarbon fuel gases for domestic consumption. Specifications GOST 25100-2011 Soils. Classification GOST 30456-97 Steel products. Rolled sheet and steel pipes. Impact test methods plans for industrial enterprises” SP 20.13330.2011 “SNiP 2.01.07-85* Loads and impacts” SP 21.13330.2012 “SNiP 2.01.09-91 Buildings and structures on undermined territories and subsidence soils” SP 22. 13330.2011 "SNiP 2.02.01-83* Foundations of buildings and structures" SP 24.13330.2011 "SNiP 2.02.03-85 Pile foundations" SP 25.13330.2012 "SNiP 2.02.04-88 Foundations and foundations on permafrost soils" SP 28.1 3330.2012 "SNiP 2.03.11-85 Protection of building structures against corrosion" SP 47.13330.2012 "SNiP 11-02-96 Engineering surveys for construction. Basic provisions” SP 62.13330.2011 “SNiP 42-01-2002 Gas distribution systems” SP 86.13330.2012 “SNiP III-42-80* Trunk pipelines” SP 110.13330.2011 “SNiP 2.11.03-93 Oil and oil products warehouses. Fire safety standards" SP 125.13330.2012 "SNiP 2.05.13-90 Oil product pipelines laid in the territory of cities and other settlements" SNiP 2.01.51-90 "Engineering and technical measures of civil defense"

Note- When using this set of rules, it is advisable to check the effect of reference standards in the public information system - on the official website of the Federal Agency for Technical Regulation and Metrology on the Internet or according to the annually published information index "National Standards", which was published as of January 1 of the current year , and according to the corresponding monthly published information signs published in the current year. If the reference standard is replaced (modified), then when using this set of rules, one should be guided by the replacing (modified) document. If the referenced document is canceled without replacement, the provision in which the link to it is given applies to the extent that this link is not affected.

3 Terms and definitions

In this set of rules, the following terms are used with their respective definitions:

3.1 shut-off valves: Industrial shut-off valves designed to shut off the flow of the working medium with a certain tightness.

3.2 bypass: A pipeline with shut-off and control valves connecting the inlet and outlet of a process unit (structure) and designed to direct all or part of the flow of the pumped product around this unit, including to exclude it from operation during maintenance or in case of failure.

3.3 trench edge (ditch, recess): The line of intersection of the trench wall (ditch, recess) with the surface of the earth.

3.4 connecting parts: Elements of the pipeline designed to change the direction of its axis, branches from it, change its diameter.

3.5 working pressure: The highest overpressure of the pipeline section for all stationary pumping modes provided for in the design documentation.

3.6 pipeline test pressure: The maximum pressure to which a pipeline section is subjected during pre-start strength tests for the required time.

3.7 pipeline burial: The distance from the top of the pipe to the ground surface; in the presence of ballast - the distance from the surface of the earth to the top of the ballasting structure.

3.8 anode grounding: A device that ensures the flow of the protective current of cathodic protection into the ground and consists of one or more anode ground electrodes.

3.9 cathodic protection: Inhibition of the rate of the corrosion process by shifting the potential of bare sections of the pipeline towards more negative values than the potential for free corrosion of these sections.

3.10 elastic bending of the pipeline: Changing the direction of the axis of the pipeline (in the vertical or horizontal planes) without the use of bends.

3.11 drain cable: A conductor that connects the negative terminal of the DC source to the pipeline (cathode drain line) and the positive terminal to an anode ground (anode drain line).

3.13 compensator: A special design or pipeline section of a given curvature, designed to absorb temperature movements.

3.14 looping: A pipeline laid parallel to the main pipeline and connected to it to increase its capacity.

3.15 protection zone of the main pipeline: Territory or water area with special conditions of use, established along the main pipeline to ensure its safety.

3.16 underwater pipeline crossing: A section of the pipeline laid across a river or reservoir with a width of more than 10 m in low water along the water table and a depth of more than 1.5 m, or a width of 25 m or more along the water table in low water, regardless of depth.

3.17 protective coating: A material and (or) structure that isolates the outer or inner surface of the pipeline from the external or internal environment.

3.18 protective potential: cathodic potential providing the required inhibition of the corrosion process.

3.19 passage along the main pipeline: The facility of the main pipeline, intended for the transportation of goods and personnel along the route of the main pipeline during its construction and operation.

3.20 protector: an electrode made of a metal or alloy having a more negative potential than the protected pipeline.

3.21 technological redundancy: the presence of mutually redundant technological units designed to put one of them into operation in case of decommissioning due to a malfunction of the other.

3.22 pressure wave smoothing system: A structure equipped with a set of technical devices that provides protection for main pipelines and intermediate oil pumping (pumping) stations from pressure overload in case of an emergency stop of one or more pumping units.

3.23 insulating connection: an insert between two sections of a pipeline that breaks its electrical continuity.

3.24 cathodic station: A complex of electrical equipment designed to create a direct electric current between the anode ground electrode and an underground structure (pipeline, tank, etc.) with cathodic protection of the latter from corrosion. Note - There are network cathode stations (the most common), the source of electricity for which are power lines, and autonomous ones, which include autonomous power sources.

3.25 compressor station: an object of the main gas pipeline, which includes a complex of buildings, structures and devices for receiving and pumping gas through the main gas pipeline.

3.26 pumping station: an object of the main oil product pipeline, which includes a complex of buildings, structures and devices for receiving, accumulating, recording and pumping oil products through the main oil product pipeline.

3.27 pumping station: an object of the main pipeline of liquefied hydrocarbon gases, including a complex of buildings, structures and devices for receiving, accumulating, accounting and pumping liquefied hydrocarbon gases through the main pipeline.

3.28 oil pumping station: an object of the main oil pipeline, which includes a complex of buildings, structures and devices for receiving, accumulating, accounting and pumping oil through the main oil pipeline.

3.29 stray currents: currents in the ground, flowing outside the circuits intended for them and arising from the operation of external sources of direct or alternating voltage (electrified vehicles, welding machines, electrochemical protection devices for foreign structures, etc.).

3.30 pipeline route: the position of the pipeline axis, determined on the ground by its projection on the horizontal and vertical planes.

3.31 main pipeline: A single production and technological complex, including buildings, structures, its linear part, including facilities used to ensure the transportation, storage and (or) transshipment of liquid or gaseous hydrocarbons to road, rail and water transport, measurements of liquid (oil, oil products, liquefied hydrocarbon gases, gas condensate, a wide fraction of light hydrocarbons, their mixtures) or gaseous (gas) hydrocarbons that meet the requirements of the legislation of the Russian Federation.

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1) Concrete and reinforced concrete structures -

2) Water supply. External networks and facilities -

3) Internal water supply and sewerage of buildings -

4) Sewerage. External networks and facilities -

5) External networks and water supply and sewerage facilities -

6) Main pipelines -

7) Internal sanitary systems -

GOSTs and TU

1) The system of project documentation for construction. Water supply and sewerage. External networks. Working drawings -

2) Compact plants for domestic wastewater treatment. Types, main parameters and dimensions -

3) Cast iron manholes for manholes. Specifications -

4) Sewerage. Terms and Definitions -

5) Concrete and reinforced concrete structures for wells of sewer, water and gas networks. Specifications -

6) Sanitary-technical spillway fittings. Specifications -

7) Ceramic sewer pipes. Specifications -

8) Cast iron sewer pipes and fittings for them. General specifications -

9) Water treatment devices. General requirements for efficiency and methods for its determination -

10) Hatches for manholes and storm water inlets. Specifications -

11) Cast iron sewer pipes and fittings for them -

12) Pipes and fittings made of polyethylene for internal sewerage systems. Specifications -

13) Polymer pipes with a structured wall and fittings for them for external sewage systems. Specifications -

14) Pressure pipes made of polyethylene. Specifications -

BUILDING REGULATIONS

MAIN PIPING

EDITION OFFICIAL

DEVELOPED VNIIST Minneftegazstroya (Ph.D. of Technical Sciences I.D. Krasulin - leader of the theme, Candidates of Technical Sciences V.V. Rozhdestvensky, A.B. Ainbinder, engineer L.A. Solovieva, Candidates of Technical Sciences V.F. Khramikhina, A. S. Bolotov, N. P. Glazov, S. I. Levin, V. V. Spiridonov, A. S. Gekhman, V. V. Pritula, V. D. Tarlinsky, A. D. Yablokov) with the participation of YuzhNIIGiprogaz (I.I. Pankov and N.N. Zheludkov), the USSR State Gas Supervision Authority R.G. Toropov). VNIIGaz of Mingazprom (candidates of technical sciences S. V. Karpov and 3. I. Nefedova], Giprotruboprovod Minnefteprom (B. A. Alimov] and MINHiGP named after I. M. Gubkin of the Ministry of Higher Education of the USSR (Doctor of Technical Sciences, prof. L G. Telegin).

INTRODUCED by Minneftegazstroy.

PREPARED FOR APPROVAL by the Glavtekhnormirovanie Gosstroy of the USSR (I. V. Sessin).

Main pipelines

Instead of SNiP

b) liquefied hydrocarbon gases of fractions C3 and C4 and their mixtures, unstable gasoline and petroleum gas condensate and other liquefied hydrocarbons with saturated vapor pressure at a temperature of plus 40?? C not more than 1.6 MPa (16 kgf/cm2) from the areas of their extraction (fields) or production (from the main pumping stations) to the place of consumption;

d) impulse, fuel and start-up gas for CS, SPHG, BCS, GDS, UZRG and gas reduction points (PRG).

Main pipelines include:

installations for electrochemical protection of pipelines against corrosion, lines and facilities for technological communication, telemechanics for pipelines;

power lines intended for maintenance of pipelines and power supply and remote control of shut-off valves and installations of electrochemical protection of pipelines;

fire-fighting means, anti-erosion and protective structures of pipelines;

tanks for storage and degassing of condensate, earthen barns for emergency release of oil, oil products, condensate and liquefied hydrocarbons;

buildings and structures of the linear service for the operation of pipelines;

permanent roads and helipads located along the pipeline route, and access roads to them, identification and signal signs of the location of pipelines;

head and intermediate pumping and loading pumping stations, tank farms, CS and GDS;

points for heating oil and oil products; signs and warning signs.

These standards do not apply to the design of pipelines laid on the territory of cities and other settlements, in marine areas and fields, as well as pipelines intended for the transportation of gas, oil, oil products and liquefied hydrocarbon gases that have a corrosive effect on the metal of pipes or cooled to a temperature below minus 40 °С.

The design of pipelines intended for the transportation of stable condensate and stable gasoline should be carried out in accordance with the requirements of these standards for oil pipelines.

Stable condensate and gasoline should include hydrocarbons and mixtures thereof, which at a temperature of plus 20 ° C have a saturated vapor pressure of less than 0.2 MPa (2 kgf/cm2) (abs).

The design of pipelines for liquefied hydrocarbons with saturated vapor pressure at a temperature of plus 20 ° C above 0.2 MPa (2 kgf / cm2) - liquefied hydrocarbon gases, unstable gasoline and unstable condensate and other liquefied hydrocarbons - should be carried out in accordance with the requirements set forth in Section . 12.

Design of buildings and structures, including engineering communications located at the CS sites. NPS, GRS. SPHG and DKS.should be carried out in accordance with the requirements of the standard

tive documents for the design of the relevant buildings and structures approved by the USSR State Construction Committee, taking into account the requirements of these standards.

1. GENERAL PROVISIONS

1.1. Main pipelines (gas pipelines, oil pipelines and oil product pipelines)1 should be laid underground (underground laying).

1.2. Laying of pipelines can be carried out singly or in parallel with other existing or planned main pipelines - in the technical corridor.

1.3. The technical corridor of main pipelines should be understood as a system of parallel pipelines along one route, designed to transport oil (oil products, including liquefied hydrocarbon gases) or gas (gas condensate).

1.4. The maximum allowable (total) volumes of transportation of products within one technical corridor and the distance between these corridors are established in accordance with SNiP????-10-74.

1.5. It is not allowed to lay main pipelines through the territories of settlements, industrial and agricultural enterprises, airfields, railway stations, sea and river ports, marinas and other similar objects.

1.6. To ensure normal operating conditions and exclude the possibility of damage to main pipelines and their facilities, security zones are established around them, the size of which and the procedure for carrying out agricultural and other work in these zones are regulated by the Rules for the Protection of Main Pipelines.

1 In the text of the norms, except where otherwise specified, instead of the words: "main (e) pipeline(s)" the word "pipeline(s)" will be used.

1.7. The temperature of gas, oil (petroleum products) entering the pipeline should be set based on the possibility of transporting the product and the requirements for the safety of insulating coatings, strength, stability and reliability of the pipeline.

The need and degree of cooling of the transported product is decided during the design.

1.8. Pipelines and their structures should be designed taking into account the maximum industrialization of construction and installation works through the use, as a rule, of pipes with factory insulation and prefabricated structures in a block-complete design from standard and standard elements and parts manufactured at factories or in stationary conditions, providing their quality production. At the same time, the decisions adopted in the project should ensure uninterrupted and safe operation of pipelines.

CLASSIFICATION AND CATEGORIES OF THE MAIN

PIPELINES

2.1. Main gas pipelines, depending on the operating pressure in the pipeline, are divided into two classes:

Class - at working pressure over 2.5 to 10.0 MPa (over 25 to 100 kgf / cm2) inclusive;

Class II - at operating pressure over 1.2 to 2.5 MPa (over 12 to 25 kgf/cm2) incl.

2.2. Main oil pipelines and oil product pipelines, depending on the diameter of the pipeline, are divided into four classes, mm:

Class - with nominal diameter over 1000 to 1200 inclusive;

II class - the same, over 500 to 1000 inclusive;

III class - the same. over 300 to 500 inclusive;

IV class - 300 or less.

2.3. Main pipelines and their sections are divided into categories, the requirements for which, depending on the operating conditions, the scope of non-destructive testing of welded joints and the magnitude of the test pressure, are given in Table. 1.

Table 1

	The coefficient of pipeline operation conditions when calculating it for strength, stability and deformability m	Number of field welded joints to be controlled by physical methods, % of the total	The pressure value during the test and the duration of the pipeline test
		accepted

		SNiP ??????-42-80


Note. When testing a pipeline for its linear part, it is allowed to increase the pressure to a value that causes stress in the pipe metal to the yield point, taking into account the minus tolerance for wall thickness.

table 2

Table 3

Assignment of pipeline sections
	gas pipelines during laying	oil pipelines and oil product pipelines when laying
	underground	ground	elevated	underground	ground	elevated
1. Crossings through water barriers: a) navigable - in the channel part and coastal sections with a length of at least 25 m each (from the average water horizon) with the diameter of the pipeline. mm:
1000 or more

b) non-navigable water mirrors with a width of 25 m or more at low water - in the channel part and coastal sections with a length of at least 25 m each (from the average water horizon) with a pipeline diameter, mm:
1000 or more

c) non-navigable water mirrors up to 25 m wide at low water - in the channel part, irrigation and diversion canals
d) mountain streams (rivers)
e) river floodplains along the high water horizon of 10% probability with a pipeline diameter, mm:
700 and more

f) sections with a length of 1000 m from the boundaries of the horizon of high waters of 10% security
2. Crossings through the swamps of the type:


3. Crossings through railways and roads (on stages):
a) railways of the general network, including sections of 40 m each on both sides of the road from the axes of the outer tracks, but not less than 25 m from the bottom of the road subgrade embankment
b) access railways of industrial enterprises, including sections 25 m long each on both sides of the road from the axes of the outer tracks
c) highways And???? categories, including sections 25 m long each on both sides of the road from the bottom of the embankment or edge excavation subgrade
d) motor roads ??????, ??????-p, IV, ????-n categories, including sections 25 m long each on both sides of the road from the soles of the embankment or edge of the excavation of the subgrade of the road
e) motor roads of category V, including sections 15 m long on both sides of the road from the bottom of the embankment or the edge of the excavation of the subgrade
e) sections of pipelines within the distances indicated in table. 4 adjacent to the transitions:
through all railways and car roads?? And???? categories
through highways ??????, IV, ??????-p, ????-p and V categories
4. Pipelines in mountainous areas when laying: a) on the shelves
b) in the tunnels
5. Pipelines laid in loosely bound dune sands in desert conditions
6. Pipelines laid on redundant and irrigated lands:
a) cotton and rice plantations
b) other crops
7. Pipelines laid across the territory of distribution of permafrost soils, which, during thawing, have a relative settlement of more than 0.1
8. Crossings through debris flows, alluvial fans and solonchak soils
9. Units for installing linear fittings (with the exception of sections of categories B and ??) and adjacent sections 15 m long in each direction from the boundaries of the assembly unit of the linear part of the pipeline
10. Gas pipelines at a length of 250 m from linear shut-off valves and underwater crossing combs (with the exception of sections of category B and ??)
11. Pipelines at a length of 100 m from the borders of adjacent sections???? categories given in pos. 3 e
12. Pipelines adjacent to the territories of SPGS, gas purification and drying plants, head structures from the side of collectors and pipelines within the distances specified in item 5 of the table. 4
13. Interfield collectors
14. Knots for launching and receiving treatment devices, as well as sections of pipelines with a length 100 m adjoining them
15. Pipelines within territories PRG of the linear part of gas pipelines
1b. Pipelines located inside the buildings and within the territories of the CS, PRG, SPKhG, DKS, GDS. NPS. UZRG, including pipelines of fuel and starting gas
17. Nodes of connection to the gas pipeline, sections between security valves, suction and discharge gas pipelines of the CS, GTP, SPKhG, UPPG, BCS (loop lines) and head structures, and also gas pipelines for own needs from the connection point to the fencing of the territories of these structures
18. Gas pipelines adjacent to the GDS within the distances specified in pos. 8 tab. 4, as well as sections behind security cranes 250 m long
19. Pipelines adjacent to the secant crane UZRG and PRG, 250 m long in both directions
20. Intersections with underground utilities (sewer collectors, oil pipelines, oil product pipelines, gas pipelines - mi, power cables and cables communications, underground, ground and above ground irrigation systems and etc.) within 20 m on both sides of the crossed utility
21. Intersections with communications given in pos. 20, and between themselves multi-line main gas pipelines with a diameter of more than 1000 mm and a pressure of 7.5 MPa (75 kgf / cm2) and more and oil pipelines with a diameter of more than 700 mm within 100 m on both sides of the crossed communication
22. Intersections (in both directions) within lah distances indicated in pos. 12 tab. 4, with overhead power lines voltage, kV:
a) 500 or more
b) from 330 to 500

23. Pipelines laid on undermined territories and territories subject to karst phenomena
24. Crossings through ravines, beams, ditches and drying up streams
25. Oil pipelines and oil product pipelines dy, laid along rivers with a width of a water mirror at low water of 25 m or more, canals, lakes and other reservoirs, have of fishery importance, above settlements and industrial enterprises at a distance. from them to 300 m with a pipe diameter of 700 mm or less; up to 500 m with pipe diameter up to 1000 mm inclusive; up to 1000 m with pipe diameters over 1000 mm				(without preliminary hydraulic test on the track)
26. Gas pipelines, oil and oil product pipelines laid in the same technical corridor, at the locations of the UZRG, PRG, installation nodes ki linear shut-off valves, start-up and reception of treatment devices, connection points of the CS, UKPG, UPPG, SPKhG, DKS, GS into the pipeline within the distances specified in pos. 9, 10, 14 and 15, and from the CS connection points to the pipeline within 250 m on both sides of them
	(if they do not belong to a higher category by type gaskets and other parameters)
cause interruptions in the supply of gas, oil and oil products to cities and other large consumers of great national economic importance, as well as environmental pollution, with appropriate justification, it is allowed to increase by one category. 2. Types of swamps should be taken in accordance with the requirements of SNiP ??????-42-80. 3. When the pipeline crosses an array of swamps of various types, with appropriate justification, it is allowed to take the category of the entire site as for the highest category in this array 4. Testing of sections of pipelines laid through water barriers with a water surface in low water less than 10 m, to be included in the installed pipeline in one stage.
5. Operating pipelines that are in a satisfactory technical condition (according to the conclusion of the representatives of the customer of the structure under construction, the operating organization and the relevant state supervision authority), when they are crossed by the projected pipelines, power lines, as well as underground utilities indicated in pos. 20 and 21, and at parallel laying in accordance with pos. 26, cannot be replaced by pipelines of higher 6. Operating pipelines crossed by railways and roads under construction are subject to reconstruction in accordance with pos. 3. 8. With a short duration of flooding by flood waters (less than 20 days) and the insignificant depth of this flooding, which allows the rapid conduction in the area emergency recovery work on pipelines in case of damage, fulfillment of the requirements of pos. 1d for gas pipelines is not necessary. for shipping - according to pos. 1a; „ non-navigable - according to pos. 1b and 1c.

BUILDING REGULATIONS

MAIN PIPING

SNiP 2.05.06-85*

DEVELOPED VNIIST Minneftegazstroya (candidate of technical sciences I. D. Krasulin — head of the theme, candidates tech. Sciences V. V. Rozhdestvensky, A. B. Ainbinder, engineer . L.A. Soloviev, tech candidates. Sciences V. F. Khramikhina, A. S. Bolotov, N. P. Glazov, S. I. Levin, V. V. Spiridonov, A. S. Gekhman, V. V. Pritula, V. D. Tarlinskii, A. D. Yablokov) participation of YuzhNIIGiprogaz (I.I. Pankov And N. N. Zheludkov), USSR State Gas Supervision R.G. Toropova). VNIIGaz Mingazprom (Ph.D. S. V. Karpov and 3. I. Nefedova), Gipropipeline Minnefteprom (B. A. Alimov) and MINKH and GP named after I.M. Gubkin of the Ministry of Higher Education of the USSR (Doctor of Technical Sciences, prof. L. G. Telegin).

INTRODUCED by Minneftegazstroy.

PREPARED FOR APPROVAL by Glavtekhnormirovanie Gosstroy USSR (I. V. Sessin).

PREPARED FOR REPUBLICATION by the Technical Regulation Department of the Gosstroy of Russia (N.A. Shishov).

SNiP 2.05.06-85* is a reissue of SNiP 2.05.06-85 with amendments No. 1, No. 2, approved by resolutions of the USSR Gosstroy No. 1 dated January 8, 1987, No. 61 dated July 13, 1990, and change No. 3, approved by the Decree of the Ministry of Construction of Russia dated November 10, 1996 No. 18-78.

Items and tables that have been amended are marked in these building codes and rules with an asterisk.

When using a normative document, one should take into account the approved changes in building codes and regulations and state standards published in the journal "Bulletin of Construction Equipment" and the information index "State Standards".

These standards apply to the design of new and reconstructed main pipelines and branches from them with a nominal diameter of up to 1400 mm inclusive. with an overpressure of the medium over 1.2 MPa (12 kgf / cm 2) up to 10 MPa (100 kgf / cm 2) (with a single laying and laying in technical corridors) for transportation:

b) liquefied hydrocarbon gases of fractions C 3 and C 4 and their mixtures, unstable gasoline and petroleum gas condensate and other liquefied hydrocarbons with a saturated vapor pressure at a temperature of plus 40 ° C not more than 1.6 MPa (16 kgf / cm 2) from areas their extraction (fields) or production (from the head pumping pumping stations) to the place of consumption;