BUILDING REGULATIONS

MAIN PIPING

SNiP III-42-80*

DEVELOPED BY VNIIST of Minneftegazstroy with the participation of institutes Giprotruboprovod of Minnefteprom and Giprospetsgaz of Mingazprom

PREPARED FOR APPROVAL by the Department of Standardization and Technical Standards in Construction of the USSR State Construction Committee ( ON THE. Shishov), VNIIST (candidates of technical sciences IN AND. Prokofiev, V.P. Mentyukov).

SNiP III-42-80* is a reissue of SNiP III-42-80 with changes approved by the Decree of the USSR Gosstroy (Ministry of Construction of Russia): No. 272 ​​dated November 5, 1982, No. 308 dated December 28, 1982, No. 71 dated December 29. 1986 and No. 18-79 dated 11/10/1996

Sections, paragraphs, tables, formulas, applications that have been amended are marked in these building codes and rules with an asterisk.

When using a normative document, the approved changes in building codes and rules and state standards should be taken into account.

1. GENERAL PROVISIONS

1.1. The rules of this chapter must be observed during the construction of new and reconstruction of existing main pipelines and branches from them with a nominal diameter of up to 1400 mm (inclusive) with an excess pressure of the medium not exceeding 10 MPa (100 kgf / cm 2) for transportation:

oil, oil products, natural and associated, natural and artificial hydrocarbon gases from the areas of their production (from the head pumping pumping and compressor stations), production or storage to the places of consumption (oil depots, transshipment bases, loading points, gas distribution stations of cities and settlements, individual industrial and agricultural enterprises and ports);

liquefied hydrocarbon gases (fractions C 3 and C 4 and mixtures thereof), as well as unstable gasoline and unstable condensate and other liquefied hydrocarbons with a saturated vapor pressure of not more than 1.6 MPa (16 kgf / cm 2) at a temperature of plus 45 ° C from areas of their extraction or production (from head pumping pumping stations) to the places of consumption (oil depots, transshipment depots, loading points, industrial enterprises, ports, gas distribution stations and cluster bases);

marketable products within the head and intermediate gas compressor and oil pumping stations, underground gas storage stations, gas distribution stations, metering points.

1.2*. The rules of this chapter do not apply to the construction of field pipelines, as well as the construction of main pipelines in offshore areas and areas with a seismic activity of more than 8 points for underground and more than 6 points for aboveground pipelines. In these cases, the requirements of the relevant departmental normative documents(VSN), approved in the prescribed manner, and in their absence - special requirements for the production and acceptance of work specified in project documentation.

1.3. During the construction of main pipelines, in addition to the requirements of this chapter, the requirements of SNiP 3.01.01-85*, SNiP III-4-80*, other building codes and rules, as well as standards and instructions governing production and acceptance certain types works in the construction complex main pipeline and approved in the prescribed manner.

1.5. The construction of main pipelines must be carried out in-line by mobile mechanized columns or complexes that ensure the continuity of all work in a strict technological sequence.

1.6. Preparatory work and the construction of crossings over natural and artificial obstacles should be carried out by specialized construction and installation units.

1.7. The width of the land allotment strip for the period of construction of main pipelines is determined by the project in accordance with SN 452-73 ..

1.8. When crossing a main pipeline under construction with underground utilities, construction installation work allowed with the permission of the organization operating these communications, and in the presence of its representatives.

1.9. If underground utilities and structures that are not listed in the design documentation are found at the work site, measures must be taken to protect them from damage in agreement with the organization operating these communications and structures.

1.10. When opening cable communication lines crossing the pipeline route, the Conditions for the performance of work within the security zones and clearings on the routes of communication and radio lines, approved by the USSR Ministry of Communications, must be observed.

1.11. In the production of construction and installation works, it must be carried out by the foremen of the work construction organizations operational control their quality (for all technological processes). Representatives of the customer, as well as representatives of state supervision bodies have the right to produce selective control the quality of all types of work. The use of materials and products for which there are no certificates, passports and other documents confirming their quality is not allowed.

1.12. During the construction of main pipelines, pipes should be used, mainly insulated in factory or basic conditions. The construction of pipelines from insulated pipes should be carried out according to special technological instructions.

1.13*. Registration of production documentation, including certificates of examination of hidden works, must be carried out in accordance with VSN 012-88, approved by the Minneftegazstroy.

1.14. Materials of the actual position of pipelines (executive survey), drawn up in accordance with the established procedure by construction and installation organizations and the customer, must be transferred to local authorities authorities.

2. PREPARATORY WORK

2.1. The customer is obliged to create a geodetic marking base for construction and transfer it to the contractor at least 10 days before the start of construction and installation works technical documentation on it and on the points and signs of this base fixed on the pipeline construction route, including:

signs fixing the corners of the route;

leading signs of the turn angles of the route in the amount of at least two for each direction of the corner within visibility;

leading signs on straight sections of the route, installed in pairs within sight, but not less than 1 km apart;

leading signs for fixing straight sections of the route at crossings over rivers, ravines, roads and other natural and artificial obstacles in the amount of at least two on each side of the crossing within sight;

high-altitude benchmarks installed at least every 5 km along the route, except for those installed at crossings through water barriers (on both banks);

an explanatory note, outlines of the location of signs and their drawings;

catalogs of coordinates and marks of points of the geodetic base.

Permissible root-mean-square errors when constructing a geodesic stakeout:

angular measurements ± 2 " ;

linear measurements 1/1000;

determination of marks ± 50 mm.

2.2. Before the start of construction, the general contracting construction and installation organization must perform the following work on the route:

control the geodetic staking base with an accuracy of linear measurements of at least 1/500, angular 2 " and leveling between benchmarks with an accuracy of 50 mm per 1 km of the route. The route is accepted from the customer according to the act, if the measured lengths of the lines differ from the design ones by no more than 1/300 of the length, the angles are no more than 3 " and marks of signs, determined from the leveling between the benchmarks, - no more than 50 mm;

install additional signs (milestones, poles, etc.) along the axis of the route and along the boundaries of the construction strip;

bring out in nature the horizontal curves of a natural (elastic) bend after 10 m, and an artificial bend - after 2 m;

break up the picketage along the entire route and at its characteristic points (at the beginning, middle and end of curves, at the intersections of routes with underground utilities). The alignments of the broken points should be fixed with signs, as a rule, outside the area of ​​construction and installation works. Install additional benchmarks after 2 km along the highway.

2.3. Prior to the start of the main construction and installation works, the general contractor must, if necessary, in addition to the requirements of SNiP 3.01.01-85 *, taking into account the specific conditions of construction, perform the following preparatory work on the road:

clear the pipeline right of way from forests, shrubs, stumps and boulders;

remove individual trees and overhanging parts of rocks and stones located outside the right of way, but threatening by their condition to fall into the area of ​​the right of way;

cut steep longitudinal slopes;

to carry out protective anti-landslide and anti-landslide measures;

to carry out measures to ensure minimal freezing of the soil in the trench for the pipeline;

build temporary roads, culverts, drainage, and drainage facilities at the entrances to the highway and along it, as well as bridges and crossings over rivers, streams and ravines; protect access roads from snow drifts;

arrange temporary on-site and near-station bases or warehouses for storing materials and equipment;

arrange temporary piers and moorings;

prepare temporary production bases and sites for the production of welding, bitumen melting and other works;

build temporary settlements that provide the necessary housing, sanitary, cultural and living conditions for workers;

prepare helipads;

create a dispatch communication system;

prepare construction sites for the production of construction and installation works on the construction of pipeline crossings through natural and artificial obstacles and when laying pipelines in tunnels with the necessary temporary amenity and technological premises, structures, roads;

create water metering posts outside the area of ​​work on the arrangement of pipeline crossings through water barriers with linking the water metering post by leveling to the high-altitude survey of the pipeline route and the state geodetic network;

remove the fertile layer of the earth and move it to a dump for temporary storage in accordance with clause 13.8 of these building codes and regulations.

2.4. The clearing of the route for the period of construction should be carried out within the boundaries of the right of way and in other places established by the project.

AT winter period clearing should be carried out in two stages: in the area of ​​​​traffic and work construction machines- in advance of the start of the main work, and in the area of ​​​​digging a trench - immediately before the work of earth-moving machines to a length that ensures their work during the shift.

2.5. Uprooting of stumps in dry sections of the route should be carried out over the entire width of the right of way, and in swampy areas - only on the strip of the future trench of the pipeline and cable. For the remainder of the ROW, trees must be cut down at ground level.

2.6. The scope of planning work required for transport purposes and the movement of construction vehicles must be specified in the construction organization project and specified in the work execution project.

2.7. Temporary roads for the passage of construction and transport vehicles should be arranged as single-lane with widening at the places of turns, turns and sidings (on the side of the pipeline opposite to the route of the cable communication line). Passages are arranged at a line-of-sight distance, but not more than 600 m.

During the construction of winter roads, it should be mainly limited to the compaction of the snow cover with the freezing of the ice crust, the freezing of the soil surface and the maintenance of the carriageway in good condition.

During the construction and operation of ice roads laid along rivers, streams and lakes, the bearing capacity of ice should be determined and work should be carried out to maintain the ice cover in working condition.

The type, design, width of roads and turning radii are determined by the construction organization project and are specified in the work execution project.

3. EARTHWORKS

3.1. The dimensions and profiles of the trenches are established by the project depending on the purpose and diameter of the pipelines, soil characteristics, hydrogeological and other conditions.

3.2. The width of the trenches along the bottom must be at least D+300 mm for pipelines up to 700 mm in diameter (where D- conditional diameter of the pipeline) and 1.5 D- for pipelines with a diameter of 700 mm or more, taking into account the following additional requirements:

for pipelines with a diameter of 1200 and 1400 mm when digging trenches with slopes not steeper than 1:0.5, the width of the trench along the bottom can be reduced to D + 500 mm;

when excavating soil with earthmoving machines, the width of the trenches should be taken equal to the width cutting edge the working body of the machine adopted by the construction organization project, but not less than that indicated above;

the width of the trenches along the bottom in curved sections from forced bending bends should be equal to twice the width in relation to the width in straight sections;

the width of the trenches along the bottom when ballasting the pipeline with weighting loads or fixing it with anchor devices must be at least 2.2 D, and for pipelines with thermal insulation is established by the project.

3.3. The steepness of slopes of trenches should be taken in accordance with SNiP 3.02.01-87, and those developed in swamps - according to Table. one.

Table 1

In silty and quicksand soils that do not ensure the preservation of slopes, trenches are developed with fastening and drainage. Types of fastening and drainage measures for specific conditions should be established by the project.

3.4. When digging trenches with bucket-wheel excavators, in order to obtain a more even surface of the bottom of the trenches at the design level and ensure a snug fit of the laid pipeline to the base along the entire length along the axis of the pipeline at a width of at least 3 m, preliminary planning of the strip microrelief should be carried out in accordance with the project.

3.5. The development of trenches in swamps should be carried out with single-bucket backhoes on widened or conventional tracks from sledges, draglines or special machines.

When laying pipelines through swamps using the alloy method, it is advisable to develop trenches and floating peat crust using an explosive method, using elongated cord, concentrated or borehole charges.

Clauses 3.6 and 3.7 exclude.

3.8. In order to prevent deformation of the profile of the dug trench, as well as freezing of the soil heap, the shifting rates of insulation-laying and excavation work should be the same.

The technologically necessary gap between the earthmoving and insulating-laying columns must be indicated in the project for the production of works.

Development of trenches in the backlog in soils (with the exception of rocky in summer time) are generally prohibited.

Explosive loosening of rocky soils should be carried out before the pipes are taken to the route, and loosening of frozen soils is allowed after laying the pipes on the route.

3.9. When developing trenches with preliminary loosening of rocky soil using a drilling and blasting method, soil sorting should be eliminated by adding soft soil and compacting it.

3.10. Foundations for pipelines in rocky and frozen soils should be leveled with a layer of soft soil with a thickness of at least 10 cm above the protruding parts of the foundation.

3.11. When constructing pipelines with a diameter of 1020 mm or more, the bottom of the trench should be leveled along the entire length of the route: on straight sections after 50 m; on vertical curves of elastic bending after 10 m; on vertical curves of forced bending after 2 m; when constructing pipelines with a diameter of less than 1020 mm only on difficult sections of the route (vertical angles of rotation, sections with rugged terrain), as well as at crossings over railways and roads, ravines, streams, rivers, beams and other obstacles for which individual workers are developed drawings

3  12  By the time the pipeline is laid, the bottom of the trench must be leveled in accordance with the project

Laying the pipeline in a trench that does not comply with the project is prohibited

3  13*  Backfilling of the trench is carried out immediately after the pipeline is lowered and ballast weights or anchor devices are installed, if the pipeline ballasting is provided for by the project Places for installation of stop valves, tees of control and measuring points of electrochemical protection are backfilled after their installation and welding of cathode leads

When backfilling the pipeline with soil containing frozen clods, crushed stone, gravel and other inclusions larger than 50 mm in diameter, the insulating coating should be protected from damage by adding soft soil to a thickness of 20 cm above the upper generatrix of the pipe or by installing protective coatings provided for by the project

Note. The post-shrinkage restoration of main pipelines (laying to design levels, restoration of design ballasting, backfilling of soil in trenches, restoration of embankments, etc.) is carried out in accordance with the procedure established by the Rules on Contracts for Capital Construction, approved by the Decree of the Council of Ministers of the USSR of December 24, 1969. No. 973.

table 2

1 area of ​​use

1.1 This set of rules establishes the basic requirements for the production and acceptance of construction and installation works during the construction and reconstruction of the linear part of the main pipelines.

1.2 This set of rules applies to the construction of new and reconstruction of the existing linear part of main pipelines and branches from them with a nominal diameter of up to 1400 mm (inclusive) with an excess pressure of the medium not exceeding 10 MPa for the transportation of the following products:

oil, oil products, natural and associated, natural and artificial hydrocarbon gases;

liquefied hydrocarbon gases (fractions C3 and C4 and their mixtures), as well as unstable gasoline and unstable condensate and other liquefied hydrocarbons with a saturated vapor pressure of not more than 1.6 MPa (16 kgf/cm2) at a temperature of 45 °C.

Does not apply to the construction of field pipelines, as well as the construction of main pipelines in offshore areas.

This set of rules uses Normative references for the following documents:

GOST 9.032-74 one system protection against corrosion and aging. Paint coatings. groups, technical requirements and designations

GOST 9.304-87 Unified system of protection against corrosion and aging. Coatings are thermal. General requirements and methods of control

GOST 9.315-91 Unified system of protection against corrosion and aging. Hot aluminum coatings. General requirements and control methods

GOST 9.402-2004 Unified system of protection against corrosion and aging. Paint coatings. Preparation of metal surfaces for painting

GOST 9.602-2005 Unified system of protection against corrosion and aging. Underground structures. General requirements for corrosion protection

GOST 12.1.004-91 SSBT. Fire safety. General requirements

GOST 12.1.007-76 SSBT. Harmful substances. Classification and general safety requirements

GOST 12.3.009-76 SSBT. Loading and unloading works. General safety requirements

GOST 12.3.032-84 SSBT. Electrical works. General safety requirements

GOST 17.2.3.02-78 Nature protection. Atmosphere. Rules for establishing allowable emissions harmful substances industrial enterprises

GOST 17.4.1.02-83 Nature protection. Soils. Classification chemical substances for pollution control

GOST 17.4.3.02-85 Nature protection. Soils. Requirements for the protection of the fertile soil layer during earthworks

GOST 17.4.3.04-85 Nature protection. Soils. General requirements for control and protection against pollution

GOST 17.5.1.01-83 Nature protection. Land reclamation. Terms and Definitions

GOST 17.5.3.05-84 Nature protection. Land reclamation. General grounding requirements

GOST 5686-2012 Soils. Piling Field Test Methods

GOST 6996-66 Welded joints. Methods for determining mechanical properties

GOST 7512-82 Non-destructive testing. Connections are welded. radiographic method

GOST 8695-75 Pipes. Flattening test method

GOST 9466-75 Coated metal electrodes for manual arc welding steels and surfacing. Classification and general specifications

GOST 14782-86 Non-destructive testing. Connections are welded. Ultrasonic methods

GOST 18442-80 Non-destructive testing. capillary methods. General requirements

GOST 19007-73 Paintwork materials. Method for determining the time and degree of drying

GOST 21105-87 Non-destructive testing. Magnetic particle method

GOST 22761-77 Metals and alloys. Method for measuring Brinell hardness with portable static hardness testers

GOST 23274-84 Mobile buildings (inventory). Electrical installations. General specifications.

GOST 23407-78 Inventory fences for construction sites and sites for construction and installation works. Specifications

GOST 23764-79 Gamma flaw detectors. General specifications

GOST 24297-87 Input control of products. Basic provisions

GOST 25113-86 Non-destructive testing. X-ray devices for industrial flaw detection. General specifications

GOST 26887-86 Platforms and ladders for construction and installation works. General specifications

GOST 28012-89 Mobile collapsible scaffolding. Specifications

GOST 28302-89 Gas-thermal protective coatings of zinc and aluminum for metal structures. General requirements for a typical technological process

GOST R 12.4.026-2001 SSBT. Signal colors, safety signs and signal markings. Purpose and rules of application. General technical requirements and characteristics. Test Methods

GOST R 21.1101-2009 SPDS. Basic requirements for design and working documentation

GOST R 51164-98 Main steel pipelines. General requirements for corrosion protection

GOST R 51694-2000 Paint and varnish materials. Coating Thickness Determination

GOST R 52289-2004 Technical means organizations traffic. Rules for the use of road signs, markings, traffic lights, road barriers and guides

GOST R 52290-2004 Technical means of traffic management. Road signs. General technical requirements

GOST R 52568-2006 Steel pipes with protective outer coatings for main gas and oil pipelines. Specifications

SP 4.13130.2009 Fire protection systems. Limiting the spread of fire at protected facilities. Requirements for space-planning and design solutions

SP 14.13330.2011 "SNiP II-7-81* Construction in seismic regions"

SP 25.13330.2012 "SNiP 2.02.04-88 Bases and foundations on permafrost soils"

SP 28.13330.2012 "SNiP 2.03.11-85 Protection of building structures against corrosion"

SP 34.13330.2012 "SNiP 2.05.02-85* Highways"

SP 36.13330.2012 "SNiP 2.05.06-85* Main pipelines"

SP 45.13330.2012 "SNiP 3.02.01-87 Earthworks, bases and foundations"

SP 47.13330.2012 “SNiP 11-02-96 Engineering surveys for construction. Basic Provisions»

SP 48.13330.2011 "SNiP 12-01-2004 Organization of construction"

SP 61.13330.2012 "SNiP 41-03-2003 Thermal insulation of equipment and pipelines"

SP 63.13330.2012 “SNiP 52-01-2003 Concrete and reinforced concrete structures. Basic Provisions»

SP 71.13330.2011 "SNiP 3.04.01-87 Insulating and finishing coatings"

SP 72.13330.2011 "SNiP 3.04.03-85 Protection of building structures and facilities against corrosion"

SP 77.13330.2011 "SNiP 3.05.07-85 Automation Systems"

SP 103.13330.2012 "SNiP 2.06.14-85 Protection of mine workings from underground and surface waters"

SP 104.13330.2011 "SNiP 2.06.15-85 Engineering protection of the territory from flooding and flooding"

SP 112.13330.2011 "SNiP 21-01-97* Fire safety of buildings and structures

SP 119.13330.2012 "SNiP 32-01-95 Railways gauge 1520 mm"

SP 121.13330.2012 "SNiP 32-03-96 Aerodromes"

SP 122.13330.2012 "SNiP 32-04-97 Railway and road tunnels"

SP 126.13330.2012 "SNiP 3.01.03-84 Geodetic works in construction"

Note - When using this set of rules, it is advisable to check the effect of reference standards (sets of rules and / or classifiers) in information system general use - on the official website of the National Authority Russian Federation on standardization on the Internet or according to the annually published information index "National Standards", which is published as of January 1 of the current year, and according to the issues of the monthly published information index "National Standards" for the current year. If the reference standard (document) to which the undated reference is given is replaced, it is recommended to use the current version of this standard (document), taking into account all changes made to this version. If the reference standard (document) to which the dated reference is given is replaced, it is recommended to use the version of this standard (document) with the year of approval (acceptance) indicated above. If, after the approval of this standard, a change is made to the referenced standard (document) to which a dated reference is given, affecting the provision to which the reference is given, then this provision is recommended to be applied without taking into account this change. If the reference standard (document) is canceled without replacement, then the provision in which the link to it is given is recommended to be applied in the part that does not affect this link. Information about the operation of the set of rules can be checked in the Federal Information Fund of Technical Regulations and Standards.

3 Terms and definitions

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

3.1 author's supervision: Control of the person who prepared the project documentation for compliance with the requirements of the project documentation during the construction process. [ The federal law dated December 30, 2009 No. 384-FZ, art. 2.3]

3.2 weatherproof paintwork: A paint-and-lacquer-based coating that protects metal surfaces of structures from atmospheric corrosion.

3.3 along-route overhead line; VL: Overhead (overhead with cable inserts) power line designed to provide electrical energy to facilities electrochemical protection and electrical equipment of the linear part of the main pipelines.

3.4 customer (technical customer): individual acting on a professional basis, or entity who are authorized by the developer and on behalf of the developer conclude agreements on the performance of engineering surveys, on the preparation of project documentation, on the construction, reconstruction, overhaul of capital construction facilities, prepare assignments for the performance of these types of work, provide persons performing engineering surveys and (or) carrying out preparation of project documentation, construction, reconstruction, overhaul of capital construction facilities, materials and documents necessary to perform these types of work, approve project documentation, sign the documents necessary to obtain permission to put the capital construction facility into operation, perform other functions provided for by this Urban planning code. The developer has the right to perform the functions of a technical customer independently; Urban planning code RF dated December 29, 2004 No. 190-FZ, article 1, paragraph 22]

3.5 overlap: An annular butt welded joint connecting the welded sections of the pipeline after they are laid in the design position.

3.6 control and measuring point: A device designed to control the parameters of corrosion threats and the effectiveness of electrochemical protection of underground pipelines and other underground metal structures, as well as for switching components of an electrochemical protection system.

3.7 as-built documentation (ID): Documentation generated by the contractor during the construction or reconstruction of the linear part of the main pipelines and confirming the compliance of the scope and quality of work with the project documentation and the current legislation of the Russian Federation in the field of construction, industrial safety, fire safety, protection environment(including a set of drawings with notes on the compliance of the work performed in kind with these drawings or drawings, with changes made to them design organization on behalf of the customer).

3.8 linear part of the main pipeline: An integral part of the main pipeline, consisting of pipelines (including shut-off and other valves, crossings through natural and artificial obstacles), an electrochemical corrosion protection system, technological communication facilities, other devices and structures, designed to transport oil, natural gas and products of their processing.

3.9 looping: A pipeline laid parallel to the main pipeline, and connected to it to increase its bandwidth. [SP 36.13330, paragraph 3.17]

3.10 marker point: a pre-selected point on the earth's surface above the axis of the pipeline at the location of the transmitter, designed to accurately reference the data of in-line diagnostics to the terrain.

3.11microtunnelling: Automated tunneling with punching of the pipe lining structure, performed without the presence of people in the working.

3.12 impassable tunnel (microtunnel): A tunnel that is not accessible for the passage of people and equipment during the operation of the pipeline.

3.13 special natural conditions: The presence of mountain ranges, water bodies, soils specific in composition and condition, including permafrost, and / or risks of the occurrence (development) of hazardous processes (phenomena) that can lead to off-design loads and impacts on the main pipeline and / or cause main pipeline accidents.

3.14 security zone of the main pipeline: Territory or water area with special conditions of use, established along the main pipeline to ensure its safety. [SP 36.13330, paragraph 3.19]

3.15 pipeline underwater crossing: A section of a pipeline laid across a river or reservoir with a width of more than 10 m in a low water period 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 a low water period, regardless of depth. [SP 36.13330, paragraph 3.16]

3.16 air pipeline transition (beam, cable-stayed): A section of an elevated pipeline laid through natural or artificial barriers.

3.17 contractor: An organization that has, as provided for by the current legislation of the Russian Federation, a certificate of admission to the types of work on the construction and / or reconstruction of trunk pipeline facilities that affect the safety of capital construction facilities, qualified personnel, construction machines and mechanisms, technological equipment, security, control and measurements, as well as a quality control system, and on the basis of an agreement with the customer, construction and reconstruction of the linear part of the main pipelines.

3.18 project of work production: A set of text and graphic documents that establish methods and sequence of execution construction and assembly works, safe, rational ways of high-quality performance technological operations, the composition and degree of detail of which are determined by the specifics and volume of construction and installation work performed.

3.19 anti-corrosion (insulating) coating: Organic (polymeric) coating that protects the metal surfaces of structures from various kinds corrosion, as well as preventing current leakage of cathodic protection.

3.20 passing tunnel: A tunnel accessible for the passage of people and equipment during the operation of the pipeline.

3.21 design documentation (PD): A set of text and graphic design documents that define architectural, functional-technological, structural and engineering solutions, the composition of which is necessary to assess the compliance of the decisions made with the design assignment, legal requirements, regulatory legal acts, documents in the field of standardization and is sufficient for the development of working documentation for construction. [GOST R 21.1001, section 3.1.2]

3.22 working documentation: A set of text and graphic documents that ensure the implementation of those adopted in the approved project documentation technical solutions capital construction facility necessary for the production of construction and installation works, providing construction with equipment, products and materials and / or manufacturing building products. [GOST R 21.1001, section 3.1.8]

3.23 building permit: A document confirming the compliance of the project documentation with the requirements of the urban development plan of the land plot or the territory planning project and the territory surveying project (in the case of construction, reconstruction of linear facilities) and giving the developer the right to carry out construction, reconstruction of capital construction objects. [Urban planning code of the Russian Federation of December 29, 2004 No. 190-FZ, article 51, paragraph 1]

3.24 special welding work: Welding when connecting pipes of different thicknesses, pipes with connecting parts of pipelines and shut-off and control valves, as well as when installing straight tie-ins, branches to the main line, overlaps and tie-in coils.

3.25 construction and installation works (CEW): A set of works performed at the construction and reconstruction site, including general construction work and installation of technological systems and equipment.

3.26 building control: Quality control of work in the process of construction or reconstruction of the linear part of the main pipelines in order to verify the compliance of the work performed with the design documentation and the working documentation prepared on its basis, with the requirements of regulatory and technical documents. Building control is carried out both by the contractor (production control), and by the customer, or by an organization involved by the customer.

3.27 technological instruction for welding: A normative document containing a set of specific operations, grades of welding consumables, equipment for assembling and welding girth welded joints, which determines the technology for making a welded joint in accordance with the requirements of design and regulatory documentation.

3.28 main pipeline: A single production and technological complex, which includes 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, measurement of liquid (oil , petroleum 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. [SP 36.13330, paragraph 3.35]

3.29 dirt filters: Devices designed to protect instruments and equipment of oil and product pipelines by cleaning the pumped liquid from mechanical impurities, paraffin-resinous inclusions, and foreign objects;

3.30 control and diagnostic point: A device for measuring the parameters of the electrochemical protection of an object with the ability to control corrosion processes.

3.31 geomodule: Honeycomb structure formed from tapes technical fabric(tailoring method), filled with technical soil.

PREPARED FOR APPROVAL by the Office of Standardization and Technical Standards in Construction of the USSR State Construction Committee (N.A. Shishov), VNIIST (PhDs V.I. Prokofiev, V.P. Mentyukov).

SNiP III-42-80* is a reissue of SNiP III-42-80 with amendments approved by resolutions of the USSR Gosstroy (Ministry of Construction of Russia) N 272 dated 11/5/1982, N 308 dated 12/28/1982, N 71 dated 12/29/1986 and N 18-79 dated 11/10/1996

1.1. The rules of this chapter must be observed during the construction of new and reconstruction of existing main pipelines and branches from them with a nominal diameter of up to 1400 mm (inclusive) with an excess pressure of the medium of not more than 10 MPa (100 kgf / cm 3) for transportation:

Oil, oil products, natural and associated, natural and artificial hydrocarbon gases from the areas of their production (from head pumping and compressor stations), production or storage to places of consumption (oil depots, transshipment depots, loading points, gas distribution stations of cities and towns, individual industrial and agricultural enterprises and ports);

Liquefied hydrocarbon gases (fractions C and C and their mixtures), as well as unstable gasoline and unstable condensate and other liquefied hydrocarbons with a saturated vapor pressure of not more than 1.6 MPa (16 kgf/cm) at a temperature of 45 °C from their production areas or production (from head pumping stations) to places of consumption (oil depots, transshipment depots, loading points, industrial enterprises, ports, gas distributing stations and cluster depots);

Marketable products within the head and intermediate gas compressor and oil pumping stations, underground gas storage stations, gas distribution stations, metering points.

1.2*. The rules of this chapter do not apply to the construction of field pipelines, as well as the construction of main pipelines in offshore areas and areas with seismic activity of more than 8 points for underground and more than 6 points for aboveground pipelines. In these cases, the requirements of the relevant departmental regulatory documents (VSN), approved in the prescribed manner, must be observed, and in their absence, special requirements for the production and acceptance of work specified in the project documentation.

1.3. During the construction of main pipelines, in addition to the requirements of this chapter, the requirements of SNiP 3.01.01-85*, SNiP III-4-80*, other building codes and rules, as well as standards and instructions governing the production and acceptance of certain types of work in the construction of the main pipeline and approved in the prescribed manner.

1.5. The construction of main pipelines must be carried out in-line by mobile mechanized columns or complexes that ensure the continuity of all work in a strict technological sequence.

1.6. Preparatory work and the construction of crossings over natural and artificial obstacles should be carried out by specialized construction and installation units.

1.8. When crossing a main pipeline under construction with underground utilities, construction and installation work is allowed with the permission of the organization operating these communications, and in the presence of its representatives.

1.9. If a construction organization detects underground utilities and structures at the work site that are not listed in the project documentation, measures must be taken to protect them from damage in agreement with the organization operating these communications and structures.

1.10. When opening cable communication lines crossing the pipeline route, the Conditions for the performance of work within the security zones and clearings on the routes of communication and radio lines, approved by the USSR Ministry of Communications, must be observed.

1.11. In the production of construction and installation works, the foremen of the work of construction organizations should carry out operational control of their quality (for all technological processes). Representatives of the customer, as well as representatives of state supervision bodies, have the right to conduct selective quality control of all types of work. The use of materials and products for which there are no certificates, passports and other documents confirming their quality is not allowed.

1.12. During the construction of main pipelines, pipes should be used, mainly insulated in factory or basic conditions. The construction of pipelines from insulated pipes should be carried out according to special technological instructions.

1.13*. Registration of production documentation, including certificates of examination of hidden works, must be carried out in accordance with VSN 012-88, approved by the Minneftegazstroy.

1.14. Materials of the actual position of pipelines (executive survey), drawn up in accordance with the established procedure by construction and installation organizations and the customer, must be transferred to local authorities.

BUILDING REGULATIONS

MAIN PIPING

SNiP III-42-80*

DEVELOPED BY VNIIST of Minneftegazstroy with the participation of institutes Giprotruboprovod of Minnefteprom and Giprospetsgaz of Mingazprom

PREPARED FOR APPROVAL by the Office of Standardization and Technical Standards in Construction of the USSR State Construction Committee (N.A. Shishov), VNIIST (PhDs in technical sciences V.I. Prokofiev, V.P. Mentyukov).

SNiP III-42-80* is a reissue of SNiP III-42-80 with changes approved by the Decree of the USSR Gosstroy (Ministry of Construction of Russia): No. 272 ​​dated November 5, 1982, No. 308 dated December 28, 1982, No. 71 dated December 29. 1986 and No. 18-79 dated 11/10/1996

Sections, paragraphs, tables, formulas, applications that have been amended are marked in these building codes and rules with an asterisk.

When using a normative document, the approved changes in building codes and rules and state standards should be taken into account.

Gosstroy of the USSR Construction norms and rules SNiP III-42-80*
Main pipelines Instead of the head
SNiP III-D.10-72

1. GENERAL PROVISIONS

1.1. The rules of this chapter must be observed during the construction of new and reconstruction of existing main pipelines and branches from them with a nominal diameter of up to 1400 mm (inclusive) with an excess pressure of the medium not exceeding 10 MPa (100 kgf / cm2) for transportation:
oil, oil products, natural and associated, natural and artificial hydrocarbon gases from the areas of their production (from the head pumping pumping and compressor stations), production or storage to the places of consumption (oil depots, transshipment depots, loading points, gas distribution stations of cities and towns, individual industrial and agricultural enterprises and ports);
liquefied hydrocarbon gases (fractions C3 and C4 and their mixtures), as well as unstable gasoline and unstable condensate and other liquefied hydrocarbons with a saturated vapor pressure of not more than 1.6 MPa (16 kgf / cm2) at a temperature of plus 45 ° C from their production areas or production (from head pumping stations) to places of consumption (oil depots, transshipment depots, loading points, industrial enterprises, ports, gas distributing stations and cluster depots);
marketable products within the head and intermediate gas compressor and oil pumping stations, underground gas storage stations, gas distribution stations, metering points.

Introduced by the Ministry of Oil and Gas Construction of the USSR Approved by a resolution
Gosstroy of the USSR
dated May 16, 1980 No. 67
into action
January 1, 1981

1.2*. The rules of this chapter do not apply to the construction of field pipelines, as well as the construction of main pipelines in offshore areas and areas with a seismic activity of more than 8 points for underground and more than 6 points for aboveground pipelines. In these cases, the requirements of the relevant departmental regulatory documents (VSN), approved in the prescribed manner, must be observed, and in their absence, special requirements for the production and acceptance of work specified in the project documentation.
1.3. During the construction of main pipelines, in addition to the requirements of this chapter, the requirements of SNiP 3.01.01-85*, SNiP III-4-80*, other building codes and rules, as well as standards and instructions governing the production and acceptance of certain types of work in the construction of the main pipeline and approved in the prescribed manner.
1.4. Categories of main pipelines and their sections are determined by the project in accordance with SNiP 2.05.06-85*.
1.5. The construction of main pipelines must be carried out in-line by mobile mechanized columns or complexes that ensure the continuity of all work in a strict technological sequence.
1.6. Preparatory work and the construction of crossings over natural and artificial obstacles should be carried out by specialized construction and installation units.
1.7. The width of the land allotment strip for the period of construction of main pipelines is determined by the project in accordance with SN 452-73 ..
1.8. When crossing a main pipeline under construction with underground utilities, construction and installation work is allowed with the permission of the organization operating these communications, and in the presence of its representatives.
1.9. If underground utilities and structures that are not listed in the design documentation are found at the work site, measures must be taken to protect them from damage in agreement with the organization operating these communications and structures.
1.10. When opening cable communication lines crossing the pipeline route, the Conditions for the performance of work within the security zones and clearings on the routes of communication and radio lines, approved by the USSR Ministry of Communications, must be observed.
1.11. In the production of construction and installation works, the foremen of the work of construction organizations should carry out operational control of their quality (for all technological processes). Representatives of the customer, as well as representatives of state supervision bodies, have the right to conduct selective quality control of all types of work. The use of materials and products for which there are no certificates, passports and other documents confirming their quality is not allowed.
1.12. During the construction of main pipelines, pipes should be used, mainly insulated in factory or basic conditions. The construction of pipelines from insulated pipes should be carried out according to special technological instructions.
1.13*. Registration of production documentation, including certificates of examination of hidden works, must be carried out in accordance with VSN 012-88, approved by the Minneftegazstroy.
1.14. Materials of the actual position of pipelines (executive survey), drawn up in accordance with the established procedure by construction and installation organizations and the customer, must be transferred to local authorities.

2. PREPARATORY WORK

2.1. The customer is obliged to create a geodetic marking base for construction and, at least 10 days before the start of construction and installation work, transfer to the contractor the technical documentation for it and for the points and signs of this base fixed on the pipeline construction route, including:
signs fixing the corners of the route;
leading signs of the turn angles of the route in the amount of at least two for each direction of the corner within visibility;
leading signs on straight sections of the route, installed in pairs within sight, but not less than 1 km apart;
leading signs for fixing straight sections of the route at crossings over rivers, ravines, roads and other natural and artificial obstacles in the amount of at least two on each side of the crossing within sight;
high-altitude benchmarks installed at least every 5 km along the route, except for those installed at crossings through water barriers (on both banks);
an explanatory note, outlines of the location of signs and their drawings;
catalogs of coordinates and marks of points of the geodetic base.
Permissible root-mean-square errors when constructing a geodesic stakeout:
angular measurements ± 2";
linear measurements 1/1000;
determination of marks ± 50 mm.
2.2. Before the start of construction, the general contracting construction and installation organization must perform the following work on the route:
control the geodetic stakeout with an accuracy of linear measurements of at least 1/500, angular 2 "and leveling between the benchmarks with an accuracy of 50 mm per 1 km of the route. The route is accepted from the customer according to the act, if the measured line lengths differ from the design lines by no more than 1 /300 length, angles not more than 3" and mark marks determined from leveling between benchmarks - not more than 50 mm;
install additional signs (milestones, poles, etc.) along the axis of the route and along the boundaries of the construction strip;
bring out in nature the horizontal curves of a natural (elastic) bend after 10 m, and an artificial bend - after 2 m;
break up the picketage along the entire route and at its characteristic points (at the beginning, middle and end of curves, at the intersections of routes with underground utilities). The alignments of the broken points should be fixed with signs, as a rule, outside the area of ​​construction and installation works. Install additional benchmarks after 2 km along the highway.
2.3. Prior to the start of the main construction and installation works, the general contractor must, if necessary, in addition to the requirements of SNiP 3.01.01-85*, perform the following preparatory work on the route, taking into account the specific construction conditions:
clear the pipeline right of way from forests, shrubs, stumps and boulders;
remove individual trees and overhanging parts of rocks and stones located outside the right of way, but threatening by their condition to fall into the area of ​​the right of way;
cut steep longitudinal slopes;
to carry out protective anti-landslide and anti-landslide measures;
to carry out measures to ensure minimal freezing of the soil in the trench for the pipeline;
build temporary roads, culverts, drainage, and drainage facilities at the entrances to the highway and along it, as well as bridges and crossings over rivers, streams and ravines; protect access roads from snow drifts;
arrange temporary on-site and near-station bases or warehouses for storing materials and equipment;
arrange temporary piers and moorings;
prepare temporary production bases and sites for the production of welding, bitumen melting and other works;
build temporary settlements that provide the necessary housing, sanitary, cultural and living conditions for workers;
prepare helipads;
create a dispatch communication system;
prepare construction sites for construction and installation work on the construction of pipeline crossings through natural and artificial obstacles and when laying pipelines in tunnels with the necessary temporary amenity and technological premises, structures, roads;
create water metering posts outside the area of ​​work on the arrangement of pipeline crossings through water barriers with linking the water metering post by leveling to the high-altitude survey of the pipeline route and the state geodetic network;
remove the fertile layer of the earth and move it to a dump for temporary storage in accordance with clause 13.8 of these building codes and regulations.
2.4. The clearing of the route for the period of construction should be carried out within the boundaries of the right of way and in other places established by the project.
In winter, clearing should be carried out in two stages: in the area of ​​​​the passage of vehicles and the operation of construction vehicles - well in advance of the start of the main work, and in the area of ​​​​digging a trench - immediately before the operation of earth-moving machines to a length that ensures their work during the shift.
2.5. Uprooting of stumps in dry sections of the route should be carried out over the entire width of the right of way, and in swampy areas - only on the strip of the future trench of the pipeline and cable. For the remainder of the ROW, trees must be cut down at ground level.
2.6. The scope of planning work required for transport purposes and the movement of construction vehicles must be specified in the construction organization project and specified in the work execution project.
2.7. Temporary roads for the passage of construction and transport vehicles should be arranged as single-lane with widening at the places of turns, turns and sidings (on the side of the pipeline opposite to the route of the cable communication line). Passages are arranged at a line-of-sight distance, but not more than 600 m.
During the construction of winter roads, it should be mainly limited to the compaction of the snow cover with the freezing of the ice crust, the freezing of the soil surface and the maintenance of the carriageway in good condition.
During the construction and operation of ice roads laid along rivers, streams and lakes, the bearing capacity of ice should be determined and work should be carried out to maintain the ice cover in working condition.
The type, design, width of roads and turning radii are determined by the construction organization project and are specified in the work execution project.

3. EARTHWORKS

3.1. The dimensions and profiles of the trenches are established by the project depending on the purpose and diameter of the pipelines, soil characteristics, hydrogeological and other conditions.
3.2. The width of the trenches along the bottom must be at least D + 300 mm for pipelines with a diameter of up to 700 mm (where D is the nominal diameter of the pipeline) and 1.5 D for pipelines with a diameter of 700 mm or more, taking into account the following additional requirements:
for pipelines with a diameter of 1200 and 1400 mm when digging trenches with slopes not steeper than 1:0.5, the width of the trench along the bottom can be reduced to D + 500 mm;
when excavating soil with earth-moving machines, the width of the trenches should be taken equal to the width of the cutting edge of the working body of the machine, adopted by the construction organization project, but not less than that indicated above;
the width of the trenches along the bottom in curved sections from forced bending bends should be equal to twice the width in relation to the width in straight sections;
the width of the trenches along the bottom when ballasting the pipeline with weighting loads or fixing it with anchor devices must be at least 2.2D, and for pipelines with thermal insulation it is established by the project.
3.3. The steepness of slopes of trenches should be taken in accordance with SNiP 3.02.01-87, and those developed in swamps - according to Table. one.

Table 1

Peat
I II III (heavily watered)
Weakly decomposed 1:0.75 1:1 -
Well decomposed 1:1 1:1.25 According to the project

In silty and quicksand soils that do not ensure the preservation of slopes, trenches are developed with fastening and drainage. Types of fastening and drainage measures for specific conditions should be established by the project.
3.4. When digging trenches with bucket-wheel excavators, in order to obtain a more even surface of the bottom of the trenches at the design level and ensure a snug fit of the laid pipeline to the base along the entire length along the axis of the pipeline at a width of at least 3 m, preliminary planning of the strip microrelief should be carried out in accordance with the project.
3.5. The development of trenches in swamps should be carried out with single-bucket backhoes on widened or conventional tracks from sledges, draglines or special machines.
When laying pipelines through swamps using the alloy method, it is advisable to develop trenches and floating peat crust using an explosive method, using elongated cord, concentrated or borehole charges.
Paragraphs 3.6 and 3.7 shall be deleted.
3.8. In order to prevent deformation of the profile of the dug trench, as well as freezing of the soil heap, the shifting rates of insulation-laying and excavation work should be the same.
The technologically necessary gap between the earthmoving and insulating-laying columns must be indicated in the project for the production of works.
The development of trenches in the backlog in soils (with the exception of rocky ones in the summer), as a rule, is prohibited.
Explosive loosening of rocky soils should be carried out before the pipes are taken to the route, and loosening of frozen soils is allowed after laying the pipes on the route.
3.9. When developing trenches with preliminary loosening of rocky soil using a drilling and blasting method, soil sorting should be eliminated by adding soft soil and compacting it.
3.10. Foundations for pipelines in rocky and frozen soils should be leveled with a layer of soft soil with a thickness of at least 10 cm above the protruding parts of the foundation.
3.11. When constructing pipelines with a diameter of 1020 mm or more, the bottom of the trench should be leveled along the entire length of the route: on straight sections after 50 m; on vertical curves of elastic bending after 10 m; on vertical curves of forced bending after 2 m; when constructing pipelines with a diameter of less than 1020 mm only on difficult sections of the route (vertical angles of rotation, sections with rugged terrain), as well as at crossings over railways and roads, ravines, streams, rivers, beams and other obstacles for which individual workers are developed drawings
312 By the time the pipeline is laid, the bottom of the trench must be leveled in accordance with the project
Laying the pipeline in a trench that does not comply with the project is prohibited
313* Backfilling of the trench is carried out immediately after the lowering of the pipeline and the installation of ballast weights or anchor devices, if the ballasting of the pipeline is provided for by the project The installation sites of stop valves, tees of control and measuring points of electrochemical protection are backfilled after their installation and welding of cathode leads
When backfilling the pipeline with soil containing frozen clods, crushed stone, gravel and other inclusions larger than 50 mm in diameter, the insulating coating should be protected from damage by adding soft soil to a thickness of 20 cm above the upper generatrix of the pipe or by installing protective coatings provided for by the project

Note. The post-shrinkage restoration of main pipelines (laying to design levels, restoration of design ballasting, backfilling of soil in trenches, restoration of embankments, etc.) is carried out in accordance with the procedure established by the Rules on Contracts for Capital Construction, approved by the Decree of the Council of Ministers of the USSR of December 24, 1969. No. 973.
table 2

Tolerance Tolerance value (deviation), cm
Half the width of the trench along the bottom in relation to the center line + 20, - 5
Deviation of marks when planning a lane for the operation of bucket-wheel excavators - 5
Deviation of trench bottom marks from the project:
in the development of soil by earthmoving machines - 10
when developing soil by drilling and blasting - 20
The thickness of the bed layer of soft soil at the bottom of the trench + 10
The thickness of the layer of powder from soft soil above the pipe (with subsequent backfilling with rocky or frozen soil) + 10
The total thickness of the backfill layer above the pipeline + 20
Embankment height + 20, - 5

3.14*. Soft backfilling of the bottom of the trench and backfilling of the pipeline laid in rocky, stony, crushed stone, dry lumpy and frozen soils with soft soil can be replaced by solid reliable protection made of non-rotting, environmentally friendly materials.
3.15. Earthworks during the construction of main pipelines must be carried out in compliance with the tolerances given in Table. 2.

... Full version document with tables, images and applications in the attached file...