Explanatory note to the first edition of the recommendations of the national association of builders. Explanatory note to the first edition of the recommendations of the national association of builders Snip 3.05 05 87 technological pipelines

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SNiP 3

SNiP 3.05.05-84

Annex 2

Mandatory

PRODUCTION DOCUMENTATION

INSTALLATION OF EQUIPMENT AND PIPING

During the installation of equipment and pipelines, the production documentation given in the table should be drawn up, and upon their delivery, the working commission (with the exception of those indicated in paragraphs 1 - 3) should be submitted.

Documentation

Note

Transfer deed working documentation for the production of works

Completeness of documents in accordance with SN 202-81 * and the standards of the project documentation system for construction; suitability for installation work, including testing, for the implementation of complete-block and nodal methods of work; availability of a work permit; date of acceptance of documentation; signatures of representatives of the customer, general contractor and installation organization

The act of transferring equipment, products and materials for installation

According to the form of the Central Statistical Bureau of the USSR

The act of readiness of buildings, structures, foundations for the production of installation work

According to the form of the act of intermediate acceptance of critical structures in accordance with SNiP for the organization of construction production

The act of testing vessels and apparatus

Compiled for each vessel and apparatus to be tested

Pipeline test report

Compose per pipeline line

The act of testing machines and mechanisms

Name and item number according to working drawings; test duration in accordance with the manufacturer's instructions; conclusion about the test; signatures of representatives of the customer and the installation organization

Compiled for each machine or mechanism to be tested

Inspection certificate hidden works(when installing equipment and pipelines)

According to the form of the act of examination of hidden works in accordance with SNiP for the organization of construction production

The act of checking the installation of equipment on the foundation

Name and item number according to working drawings; test results and compliance with the manufacturer's instructions; conclusion on the inspection and permission for gravy; signatures of representatives of the customer and the installation organization

Attached to the act is a form indicating the measurements taken during installation.

Equipment acceptance certificate after individual tests

According to SNiP 111-3-81

Welding log

They are only for pipelines of categories 1 and 11 and pipelines Ru St. 10 MPa (100 kgf/cm2)

List of welders and thermists

Name of the object and installation management; surname, name and patronymic of welders and heat-treaters; brand, category, number and validity period of the certificate; signatures of the head of welding works and the head of the section

Journal of accounting and checking the quality of control joints

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SP 83.13330.2011 Industrial furnaces and brick pipes. Updated edition of SNiP III-24-75

SP 124.13330.2011 Heating networks Updated edition of SNiP 41-02-2003

SP 126.13330.2012 Geodetic works in construction. Updated edition of SNiP 3. 01.03-84

SP 128.13330.2012 Aluminum structures. Updated edition of SNiP 2.03.06-85"

SP 129.13330.2011 External networks and facilities for water supply and sewerage. Updated version of SNiP 3.05.04-85*

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SNiP 3.04.01-87 Insulating and finishing coatings

SNiP 3.05.04-85 External networks and water supply and sewerage facilities

SNiP 3.06.03-85*, Highways

SNiP 3.05.06 -85 Electrical devices

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STO NOSTROY 2.7.16-2011 Prefabricated monolithic reinforced concrete structures. Walls and ceilings with a spatial reinforcing cage. Rules for the implementation, acceptance and control of installation, reinforcement and concrete work.

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STO NOSTROY 2.14.7-2011 facade systems. Facade heat-insulating composite systems with external plaster layers. Rules, performance control and requirements for the results of work.

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STO NOSTROY 2.14.80-2012 Facade systems. Arrangement of hinged translucent facade structures. Rules, performance control and requirements for the results of work

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STO NOSTROY 2.14.96-2013 Hinged facade systems with an air gap. Installation of anchor fasteners. Rules, performance control and requirements for the results of work

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STO NOSTROY 2.15.8-2011 Engineering networks of buildings and structures are internal. The device of local control systems. Installation, testing and adjustment. Requirements, rules and methods of control.

STO NOSTROY 2.15.9-2011 Engineering networks of buildings and structures are internal. The device of distributed control systems. Installation, testing and adjustment. Requirements, rules and methods of control.

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STO NOSTROY 2.15.70-2012 Network engineering high-rise buildings. Installation of heat supply, heating, ventilation, air conditioning and refrigeration systems.

STO NOSTROY 2.15.71-2012 Engineering networks of high-rise buildings. The device of systems of water supply, water disposal and water fire extinguishing.

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STO NOSTROY 2.23.60-2012 Elevators. Installation and commissioning of dispatch control systems. Rules for the organization and production of work, control over the implementation and requirements for the results of work.

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STO NOSTROY 2.25.26-2011 Construction of subgrade for highways. Part 4 Development of cuts in rocky soils and the construction of embankments from coarse rocks.

STO NOSTROY 2.25.27-2011 Construction of subgrade for highways. Part 5 Construction of subgrade on soft soils.

STO NOSTROY 2.25.28-2011 Construction of subgrade for highways. Part 6 Construction of subgrade in the permafrost zone.

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PR 50.2.016-94 GSI RSK. Requirements for performing calibration work.

PR 50-732-93 GSI. Model regulation on the metrological service government agencies management Russian Federation and legal entities.

MI 1951-89 GSI. Dynamic measurements. Terms and Definitions.

MI 1967-89 GSI. The choice of methods and means of measurement in the development of implementation methods. General provisions.

MI 2174-91 GSI. Certification of algorithms and programs for data processing during measurements. Basic provisions.

MI 2175-91 GSI. Grading characteristics of measuring instruments. Construction methods, error estimation.

MI 2177-91 Measurements and measuring control. Information about measurement errors in design and technical documentation.

MI 2246-93 GSI. Measurement errors. Notation.

MI 2267-2000 GSI. Ensuring the efficiency of measurements in process control. Metrological examination of technical documentation.

MI 2232-2000 GSI. Ensuring the efficiency of measurements in process control. Estimation of measurement error with limited initial information.

MI 2334-95 GSI. Blends certified. General requirements for development.

MI 2335-95 GSI. Quality control of the results of quantitative chemical analysis.

MI 2336-95 GSI. Characteristics of the error in the results of quantitative chemical analysis. Estimation algorithms

MI 2377-98 GSI. Development and certification of methods for performing measurements.

Guidelines RD 50-98-86 Selection of universal measuring instruments for linear dimensions up to 500 mm

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RD 50-453-84 Guidelines. Characteristics of the error of measuring instruments in real operating conditions. Calculation methods

R 50.2.038-2004 State system for ensuring the uniformity of measurements. Direct single measurements. Estimation of errors and uncertainty of the measurement result

STO NOSTROY 1.1–2010 Standardization system of the National Association of Builders. Standards of the National Association of Builders. The order of development, approval, registration, accounting, change and cancellation.

Complex state standards labor safety systems.

11 Additional information:

Director of FTNS

Development manager A.A. Shlyapnikov

CONSTRUCTION

DEVELOPED BY VNIImontazhspetsstroy of the USSR Minmontazhspetsstroy (engineers V. Ya. Eidelman, Doctor of Technical Sciences V. V. Popovsky - leaders of the theme; Candidates of Technical Sciences V. I. Obaturov, Yu. V. Popov, R. I. Tavastsherna) , Giproneftespetsmontazh of the USSR Minmontazhspetsstroy (Ph.D. Tech. Sciences I. S. Goldenberg) and Giprokhimmontazh of the USSR Minmontazhspetsstroy (engineers I.P. Petrukhin, M.L. Elyash).

INTRODUCED by the USSR Minmontazhspetsstroy.

PREPARED FOR APPROVAL by the Department of Technical Regulation and Standardization of the Gosstroy of the USSR (engineer B. A. Sokolov).

With the entry into force of SNiP 3.05.05-84 "Technological equipment and technological pipelines"No longer valid SNiP III. 31.78* "Technological equipment. Basic provisions".

State

the committee

building codes and rules

SNiP

3.05.05-84

for construction (Gosstroy of the USSR)

Process equipment and process pipelines

Instead

SNiP

III-31-78*

These rules apply to the production and acceptance of work on the installation of process equipment and process pipelines (hereinafter referred to as "equipment" and "pipelines") intended for the production, processing and transportation of initial, intermediate and final products at an absolute pressure of 0.001 MPa (0. 01 kgf/cm 2) up to 100 MPa incl. (1000 kgf / cm 2), as well as pipelines for supplying coolants, lubricants and other substances necessary for the operation of the equipment.

The rules must be observed by all organizations and enterprises involved in the design and construction of new, expansion, reconstruction and technical re-equipment of existing enterprises.

Work on the installation of equipment and pipelines controlled by the USSR Gosgortskhnadzor, including welding and quality control of welded joints, must be carried out in accordance with the rules and norms of the USSR Gosgortekhnadzor.

1. GENERAL PROVISIONS

1.1. When performing work on the installation of equipment and pipelines, it is necessary to comply with the requirements of SNiP for the organization of construction production, SNiP III-4-80, standards, specifications and departmental normative documents approved in accordance with SNiP 1.01.01-82*.

1.2. Work on the installation of equipment and pipelines must be carried out in accordance with the approved design estimates and working documentation, the project for the production of works (PPR) and the documentation of manufacturers.

1.3. Installation of equipment and pipelines should be carried out on the basis of the nodal method of construction and the complete-block method of installation.

Notes: 1. The nodal method of construction is understood as the organization of construction and installation works with the division of the launch complex into interconnected technological units - structurally and technologically separate parts of the construction object, the technical readiness of which, after completion of construction and installation works, allows autonomously, regardless of the readiness of the facility as a whole, to carry out commissioning work, individual testing and complex testing of units, mechanisms and devices.

2. The package-block installation method is understood as the organization of the installation of equipment and pipelines with the maximum transfer of work from the construction site to the conditions industrial production with the aggregation of equipment, pipelines and structures into blocks at supplying enterprises, as well as at assembly and assembly enterprises of the construction industry and construction and installation organizations with delivery to construction sites in the form of sets of block devices.

1.4. The documentation issued in accordance with clause 1.2 of the installation organization must provide for:

a) the use of technological blocks and communication blocks with aggregation, their constituent parts based on nomenclature and technical requirements, approved or mutually agreed by the higher organizations of the customer and the contractor performing the installation work;

b) division of the construction object into technological units, the composition and boundaries of which are determined by the design organization in agreement with the customer and the contractor carrying out the installation work;

c) the possibility of supplying technological blocks and communication blocks to the installation site in assembled form with the creation, if necessary, of installation openings in the walls and ceilings of buildings and hinged devices in supporting building structures for installation by turning, as well as with strengthening, if necessary, building structures for perception by them additional temporary loads arising during the installation process; permanent or temporary roads for moving heavy and large equipment, as well as heavy cranes;

d) data on tolerances for calculating the accuracy of performing geodetic stakeouts and creating an internal geodetic stakeout base for equipment installation.

1 .5. The general contractor must involve the installation organization in reviewing and drawing up an opinion on the construction organization project, constructive solutions buildings and structures, as well as technological layouts, in which the possibility and basic conditions for the production of work by complete-block and nodal methods should be determined.

1 .6. The general contractor must provide, and the installation organization - to entrust from the general contractor (or, in agreement with him, directly from the customer) the necessary set of working documentation with the customer's mark on each drawing (copy) about acceptance for production.

1 .7. The supply of equipment, pipelines and components and materials necessary for installation should be carried out according to a schedule agreed with the installation organization, which should provide for the priority supply of machines, apparatus, fittings, structures, products and materials included in the specifications for blocks to be manufactured by installation organizations.

1 .8. The completion of the installation of equipment and pipelines should be considered the completion of individual tests performed in accordance with Sec. 5 of these rules, and the signing by the working commission of the equipment acceptance certificate.

After the completion of the installation work by the installation organization, i.e. completion of individual tests and acceptance of equipment for complex testing, the customer performs a comprehensive testing of the equipment in accordance with the mandatory Appendix 1.

1.9. At each construction site, during the installation of equipment and pipelines, it is necessary to keep general and special logs for the production of work in accordance with SNiP for the organization of construction production and draw up production documentation, the types and content of which must comply with the mandatory Appendix 2, and its forms should be established by departmental regulatory documents.

2. PREPARATION FOR INSTALLATION WORKS

GENERAL REQUIREMENTS"

2.1. Installation of equipment and pipelines must be preceded by preparation in accordance with SNiP for the organization of construction production and this SNiP.

2.2. During general organizational and technical preparation, the following must be determined by the customer and agreed with the general contractor and the installation organization:

a) conditions for completing the facility with equipment and materials supplied by the customer, providing for the supply of equipment sets to the production line, process unit, process unit;

b) schedules that determine the delivery time for equipment, products and materials, taking into account the sequence of installation, as well as the production of related special construction and commissioning works;

c) the level of factory readiness of the equipment, taking into account the requirements of GOST 24444-80 and technical conditions that determine the installation and technological requirements for the supply of equipment to be installed;

d) a list of equipment installed with the involvement of the installation supervision personnel of manufacturing enterprises;

e) conditions of transportation to the place of installation of large-sized and heavy equipment.

2.3. When preparing the installation organization for the production of work, there must be:

a) approved the WEP for the installation of equipment and pipelines;

b) work has been completed to prepare the site for the pre-assembly of equipment, pipelines and structures, assembly of blocks (technological and communications);

c) lifting equipment is prepared, vehicles, devices for installation and individual testing of equipment and pipelines, inventory production and sanitary buildings and structures provided for by the PPR; a production base was prepared for the assembly of blocks (technological and communications), the manufacture of pipelines and metal structures;

d) the measures provided for by the norms and rules for labor protection, fire safety and environment.

2.4. Preparation of installation work should be carried out in accordance with the schedule and include: the transfer by the customer of equipment, products and materials for installation; acceptance by the installation organization from the general contractor industrial buildings, structures and foundations for the installation of equipment and pipelines; production of pipelines and structures; assembly of technological blocks, communication blocks and pre-assembly of equipment; delivery of equipment, pipelines and structures to working area.

TRANSFER TO INSTALLATION OF EQUIPMENT,

PRODUCTS AND MATERIALS

2.5. Prior to the transfer of equipment, products and materials, the customer (general contractor) must present to the installation organization:

a) for equipment and fittings - accompanying documentation in accordance with GOST 24444-80;

b) for assembly units of pipelines P y over 10 MPa (100 kgf / cm 2) - assembly drawings of pipelines, supports and hangers and documents certifying their quality;

c) for materials - certificates of supplier enterprises.

In the absence of documents of the supplier enterprise, they can be replaced by documents corresponding to them in content, signed by responsible representatives of the customer.

According to the accompanying documentation, the conformity of the brands, sizes and other characteristics of the equipment, products and materials of the working documentation, according to which the installation should be carried out, should be checked.

2.6. Equipment, products, materials must be transferred for installation in a complete set on the block and technological unit in accordance with the working drawings. Pipelines P y over 10 MPa (100 kgf / cm 2) are transferred to installation assembled in assembly units.

The procedure for the transfer of equipment, products and materials is established by the "Rules on contracts for capital construction" and "Regulations on the relationship of organizations - general contractors with subcontractors".

2.7. When transferring equipment for installation, it is inspected, checked for completeness (without disassembly into assembly units and parts) and compliance of the accompanying documentation with the requirements of working drawings, standards, specifications and other documents that determine the installation and technological requirements, checking for the availability and validity of the guarantee of enterprises - manufacturers.

Elimination of equipment defects found during the acceptance process. is the responsibility of the customer.

2.8. Equipment and products for which expired guarantee period. specified in the technical specifications, and in the absence of such instructions - after a year, they can be accepted for installation only after an audit, correction of defects, tests, as well as other work provided for by the operational documentation. The results of the work performed must be entered in the forms, passports and other accompanying documentation in accordance with clause 2.5 of these rules.

2.9. Equipment, products and materials accepted for installation must be stored in accordance with the requirements of the documentation of manufacturers and PPR.

During storage, access for inspection should be provided, conditions should be created to prevent mechanical damage, moisture and dust from entering the internal cavities.

ACCEPTANCE FOR INSTALLATION OF BUILDINGS, STRUCTURES AND FOUNDATIONS

2.10. In buildings and structures handed over for the installation of equipment and pipelines, construction works provided for by the PPR, including those specified in paragraph 2.3 of these rules, are laid underground utilities backfilling and compaction of the soil, up to design marks, screeds for floor coverings and channels were made, crane tracks and monorails were prepared and accepted, holes were made for laying pipelines and embedded parts were installed for installing supports under them; foundations and other structures must be freed from formwork and cleared of construction debris, openings must be fenced, trays and hatches blocked.

In buildings where equipment and pipelines are installed, the technical conditions for the installation of which provide for special requirements for cleanliness, temperature conditions, etc., when handing over for installation, compliance with these conditions must be ensured.

2.11. In buildings, structures, foundations and other structures. handed over for installation of equipment and pipelines, must be applied with the necessary accuracy and in the manner established by SNiP on geodetic works in construction, axes and high-rise rollbacks that determine the design position of the mounted elements.

On the foundations for the installation of equipment, the accuracy of which is subject to increased requirements, as well as for the installation of equipment of a significant length, the axis and height marks must be applied to the embedded metal plates.

The height marks of the foundation for the installation of equipment requiring grouting should be 50-60 mm below the mark of the supporting surface of the equipment indicated in the working drawings, and at the locations of the protruding ribs of the equipment - 50-60 mm below the mark of these ribs.

2.12. In the foundations handed over for installation, foundation bolts and embedded parts must be installed, if their installation is provided for in the working drawings of the foundation, wells are made or wells are drilled for foundation bolts.

If the working drawings provide for the conductors for the foundation bolts remaining in the foundation array, then the installation of these conductors and the foundation bolts attached to them is carried out by the organization that mounts the equipment. Drilling holes in foundations, installing foundation bolts fixed with glue and cement mixtures performed by a construction company.

Foundation bolts embedded in the foundation, on the part protruding from the foundation, must be protected from corrosion.

2.13. Upon acceptance of buildings, structures and building structures for installation, an executive diagram of the location of foundation bolts, mortgages and other details of fastening equipment and pipelines must be simultaneously transferred.

Deviations of the actual dimensions from those specified in the working drawings should not exceed the values established by the relevant SNiP.

2.14. Buildings, structures and foundations necessary for the installation of a complex of equipment and pipelines that form a technological unit must be presented for acceptance for installation at the same time.

MANUFACTURE OF ASSEMBLY UNITS OF PIPELINES

2.15. The production of assembly units of pipelines must be carried out in accordance with the detail drawings, GOST 16037-80 and the requirements of departmental regulatory documents. Permanent connections must be made in accordance with the requirements of Sec. 4 of these rules.

2.16. Assembly units of pipelines transferred for installation must be completed according to the specification of detail drawings; welded joints are welded and checked, surfaces are primed (except for welded edges); pipe openings are closed with plugs.

The deviation of the linear dimensions of the assembly units of the pipeline should not exceed ± 3 mm per meter, but not more than ± 10 mm for the entire length of the assembly unit. Deviations of angular dimensions and misalignment of the axes should not exceed ±2.5 mm per 1 m, but not more than ±8 mm for the entire subsequent straight section of the pipeline.

ASSEMBLY OF TECHNOLOGICAL UNITS AND COMMUNICATION UNITS

2.17. Assembly and welding of pipelines as part of the unit should be carried out in accordance with the requirements of Sec. 2 and 4 of these rules.

The installation of instruments, monitoring and control equipment, electrical devices and automation systems in the block must be carried out in accordance with the requirements of SNiP for the installation of electrical devices and for the installation of automation systems.

2.18. Technological blocks at the end of the assembly must be tested, painted, and the holes closed with plugs.

Testing of blocks or their assembly units is carried out in compliance with the requirements of Sec. 5 real rules.

Assembly units of communication units not connected to the equipment are tested after installation in the design position.

2.19. When storing the assembled blocks, the requirements of clause 2.9 of these rules must be observed.

2.20. Pipelines in communication blocks must be installed and fixed on permanent supports.

3. PRODUCTION OF INSTALLATION WORKS

GENERAL REQUIREMENTS

3.1. When loading, unloading, moving, lifting, installing and aligning equipment and pipelines, their safety must be ensured. On-site transportation, installation and alignment are carried out in accordance with the PPR.

3.2. Equipment, pipelines, technological blocks and communication blocks must be securely rafters for the parts provided for this purpose or in the places indicated by the manufacturer. The release of equipment and pipelines from the slings should be carried out after they are securely fastened or installed in a stable position.

3.3. Loads on building construction arising in connection with the movement and installation of equipment and pipelines, as well as means for installation work, should not exceed the permissible installation loads (in magnitude, direction and place of application) specified in the working drawings. The possibility of increasing loads should be agreed with the design organization and the organization performing general construction work.

3.4. Equipment and pipeline fittings are not subject to disassembly and revision during installation, except when it is provided for by state and industry standards and specifications agreed in the prescribed manner.

Dismantling of equipment that came sealed from the manufacturer is prohibited, except for the cases specified in clause 2.8 of these rules.

3.5. Before installation in the design position, the outer surfaces of equipment and pipelines must be cleaned of preservative lubricants and coatings, with the exception of surfaces that must remain covered with protective compounds during installation and operation of the equipment.

The protective coatings of the equipment should be removed, as a rule, before individual testing without disassembling the equipment in accordance with the instructions given in the manufacturer's documentation.

3.6. Equipment and pipelines contaminated, deformed, with damage to protective coatings and treated surfaces and other defects, are not subject to installation until the damage and defects are eliminated.

3.7. During the installation of equipment and pipelines, operational quality control of the work performed should be carried out. Identified defects must be eliminated before the start of subsequent operations.

3.8. Installation work at outdoor air temperatures below or above those provided for by the operating conditions of equipment and pipelines must be carried out in compliance with measures to ensure their safety.

INSTALLATION OF EQUIPMENT

3.9. Installation of equipment must be carried out on a foundation that is free of dirt and oil stains.

3.10. Equipment alignment should be carried out in accordance with the instructions in the manufacturer's documentation and working drawings with respect to specially fixed marks and benchmarks (with the required accuracy) axes and marks or with respect to previously installed equipment, with which the equipment being aligned is connected kinematically or technologically.

3.11. Installation of equipment on temporary support elements should ensure the absence of deformations and the reliability of its fastening before grouting.

3.12. The supporting surface of the equipment must fit snugly against the supporting elements, the adjusting screws - against the supporting plates, and the permanent supporting elements (concrete pads, metal linings, etc.) - against the foundation surface.

3.13. When used to align the mounted equipment, temporary supporting elements Nuts should be pre-tightened to prevent movement of equipment during priming. Final tightening according to technical documentation manufacturer is carried out after the grouting material reaches a strength of at least 70% of the design strength.

When using permanent support elements for alignment, the final tightening of the nuts is carried out before the gravy.

After reconciliation and fixing of the equipment on the foundation, an act of checking its installation should be drawn up.

3.14. The pouring of the equipment must be carried out by the construction organization no later than 48 hours after the written notification of the installation organization in the presence of its representative.

3.15. Curing and maintenance of grout concrete must be carried out in accordance with the requirements of SNiP for the production of concrete work and PPR.

PIPING INSTALLATION

3.16. Pipelines may only be connected to equipment fixed on supports. Pipelines should be connected to the equipment without distortion and additional tension. The fixed supports are fixed to the supporting structures after the pipelines are connected to the equipment.

Before installing the assembly units of pipelines in the design position, the nuts on the bolts of the flange connections must be bent and the welded joints welded.

3.17. When installing supports and supporting structures under pipelines, the deviation of their position from the design in terms of the plan should not exceed ±5 mm for pipelines laid indoors, and ±10 mm for external pipelines, and the slope should not exceed +0.001, unless other tolerances are specifically provided project.

To ensure the design slope of the pipeline, it is allowed to install metal linings under the supports welded to embedded parts or steel structures.

Support and suspension springs must be tightened in accordance with the instructions given in the working drawings.

3.18. When laying steel pipelines on overpasses, in channels or trays, the final fixing of pipelines in each temperature block should be carried out starting from fixed supports.

3.19. Sections of pipelines enclosed in sleeves in places where pipelines are laid through walls and ceilings should not have joints. Pipelines must be insulated and painted prior to installation in the sleeve. Gaps between pipelines and sleeves must be sealed with non-combustible material.

3.20. When installing glass, rubber-lined and plastic-lined pipes, it is not allowed to bend them by heating, insert fittings and “lugs” into assembled pipelines. Deviations from the design dimensions of pipelines along the length must be compensated by inserts (rings) installed in flange connections.

3.21. By the beginning of the installation of plastic and glass pipelines in the area of their laying, welding and thermal insulation work must be completed.

3.22. Glass pipelines should be mounted after the installation of equipment, as well as metal and plastic pipelines. When fixing glass pipes with metal brackets, a gasket made of elastic material should be installed between the bracket and the glass pipe.

3.23. Glass pipelines, if necessary, should be freed from products transported by gravity by purging with inert gas or air at a pressure of not more than 0.1 MPa (1 kgf / cm 2). It is not allowed to blow glass pipelines with steam.

3.24. When installing glass pipelines, flanged or coupling detachable connections with sealing elastic gaskets that are chemically resistant to the media used when flushing pipelines must be used.

4. WELDED AND OTHER PERMANENT PIPELINE JOINTS

GENERAL REQUIREMENTS

4.1. Welders are allowed to weld joints of steel pipelines P y over 10 MPa (100 kgf / cm 2), categories I-IV (according to SN 527-80) if they have documents in accordance with the Rules for the certification of welders approved by the USSR Gosgortekhnadzor. Welders who have not passed the specified certification, but have welded test joints, may be allowed to weld joints of steel pipelines of category V.

4.2. Welders (for any type of welding). those who start welding pipelines for the first time at the installation of this facility or who have had a break in their work for more than 2 months, as well as all welders in cases of using new welding consumables or equipment, regardless of whether they have certification documents, must weld test joints under conditions identical to those in which pipelines are welded at this facility.

4.3. Trial joints of steel pipelines must be subjected to external inspection, mechanical tests in accordance with GOST 6996-66, in accordance with mandatory Appendix 3, as well as continuity testing by non-destructive testing methods in accordance with the requirements of paragraphs. 4.8, 4.10-4.14 of these rules.

In cases of unsatisfactory quality of welding test joints, identified:

a) during external examination, the joint is rejected and not subjected to other control methods;

b) when checking continuity by non-destructive testing methods, the welder who made the marriage welds two more test joints and, if at the same time at least one of the joints is rejected during testing by non-destructive methods, welding of test joints is rejected;

c) during mechanical tests, a repeated test is made of a double number of samples taken from the same joint or from a joint newly welded by this welder, and if at least one of the samples is rejected during repeated mechanical tests, welding of test joints is rejected.

In the above cases, a welder who performed welding of rejected test joints may be allowed again to weld test joints of pipelines only after passing tests according to programs approved by the Ministry (department) of the USSR.

4.4. Workers who have been trained and passed tests in accordance with programs approved by the USSR ministry (department) are allowed to make permanent joints made of non-ferrous metals and alloys, to weld and glue plastic pipelines.

4.5. Welding of steel pipelines is allowed at temperatures. specified in the rules approved by the USSR Gosgortekhnadzor, departmental regulations and industry standards.

Welding of pipelines made of non-ferrous metals, as well as welding and gluing of plastic pipelines is allowed at an ambient temperature of at least 5 °C.

4.6. The surface of the ends of pipes and pipeline parts to be joined must be treated and cleaned before welding in accordance with the requirements of departmental regulations and industry standards.

4.7. Before installation of steel pipelines, welded joints of pipes and parts must be kept until they cool completely, and plastic pipelines with adhesive joints - at least 2 hours.

BUILDING REGULATIONS

PROCESS EQUIPMENT AND PROCESS PIPING

SNiP 3.05.05-84

USSR STATE COMMITTEE FOR CONSTRUCTION

Moscow 1985

INTRODUCED by the USSR Minmontazhspetsstroy.

PREPARED FOR APPROVAL by the Department of Technical Regulation and Standardization of the Gosstroy of the USSR (engineer B. A. Sokolov).

With the entry into force of SNiP 3.05.05-84 "Technological equipment and process pipelines", SNiP III-31-78 * "Technological equipment. Basic provisions" becomes invalid.

	General provisions
	Preparation for the production of installation work
	General requirements
	Transfer to the installation of equipment, products and materials
	Acceptance for installation of buildings, structures and foundations
	Production of assembly units of pipelines
	Assembly of technological communication blocks
	Production of installation works
	General requirements
	Installation of equipment
	Pipeline installation
	Welded and other permanent connections of pipelines
	General requirements
	Quality control of steel pipeline connections
	Quality control of pipeline connections made of non-ferrous metals and alloys
	Quality control of plastic pipeline connections
	Individual testing of installed equipment and pipelines
Attachment 1.		Mandatory. The procedure for the production of commissioning
Appendix 2		Mandatory. Production documentation issued during the installation of equipment and pipelines
Appendix 3		Mandatory. Mechanical testing of welded specimens of steel pipelines
Appendix 4		Mandatory. Determination of the total quality score of a welded joint of a steel pipeline based on the results of radiographic testing

The rules must be observed by all organizations and enterprises involved in the design and construction of new, expansion, reconstruction and technical re-equipment of existing enterprises.

Work on the installation of equipment and pipelines controlled by the USSR Gosgortekhnadzor, including the assembly and quality control of welded joints, must be carried out in accordance with the rules and norms of the USSR Gosgortekhnadzor.

1. GENERAL PROVISIONS

1.1. When performing work on the installation of equipment and pipelines, it is necessary to comply with the requirements of SNiP for the organization of construction production, SNiP III-4-80, standards, specifications and departmental regulations approved in accordance with SNiP 1.01.01-82 *.

1.2 . Work on the installation of equipment and pipelines must be carried out in accordance with the approved design estimates and working documentation, the project for the production of works (PPR) and the documentation of manufacturers.

1.3. Installation of equipment and pipelines should be carried out on the basis of the nodal method of construction and the complete-block method of installation.

Notes: 1. The nodal method of construction is understood as the organization of construction and installation works with the division of the launch complex into interconnected technological units - structurally and technologically separate parts of the construction object, the technical readiness of which, after completion of construction and installation works, allows autonomously, regardless of the readiness of the facility as a whole, to carry out commissioning work, individual testing and complex testing of units, mechanisms and devices.

2. The complete-block installation method is understood as the organization of installation of equipment and pipelines with the maximum transfer of work from the construction site to industrial production conditions with the aggregation of equipment, pipelines and structures into blocks at supplying enterprises, as well as at assembly and assembly enterprises of the construction industry and construction and installation organizations with delivery to construction sites in the form of sets of block devices.

1.4. The documentation issued in accordance with clause 1.2 of the installation organization must provide for:

a) the use of technological blocks and communication blocks with aggregation, their components based on the nomenclature and technical requirements approved or mutually agreed by the higher organizations of the customer and the contractor performing the installation work;

d) data on tolerances for calculating the accuracy of performing geodetic stakeouts and creating an internal geodetic stakeout base for equipment installation.

1.5. The general contractor must involve the installation organization in reviewing and drawing up an opinion on the construction organization project, constructive solutions for buildings and structures, as well as technological layouts, in which the possibility and basic conditions for performing work by complete-block and nodal methods should be determined.

1.6. The general contractor must provide, and the installation organization - to entrust from the general contractor (or, in agreement with him, directly from the customer) the necessary set of working documentation with the customer's mark on each drawing (copy) about acceptance for production.

1.7. The supply of equipment, pipelines and components and materials necessary for installation should be carried out according to a schedule agreed with the installation organization, which should provide for the priority supply of machines, apparatus, fittings, structures, products and materials included in the specifications for blocks to be manufactured by installation organizations.

1.8. The completion of the installation of equipment and pipelines should be considered the completion of individual tests performed in accordance with Sec. 5 of these rules, and the signing by the working commission of the equipment acceptance certificate.

2. PREPARATION FOR INSTALLATION WORKS

GENERAL REQUIREMENTS

2.1. Installation of equipment and pipelines must be preceded by preparation in accordance with SNiP for the organization of construction production and this SNiP.

2.2. During general organizational and technical preparation, the following must be determined by the customer and agreed with the general contractor and the installation organization:

a) conditions for completing the facility with equipment and materials supplied by the customer, providing for the supply of equipment sets to the production line, process unit, process unit;

d) a list of equipment installed with the involvement of the installation supervision personnel of manufacturing enterprises;

e) conditions of transportation to the place of installation of large-sized and heavy equipment.

2.3 . When preparing the installation organization for the production of work, there must be:

a) approved the WEP for the installation of equipment and pipelines;

b) work has been completed to prepare the site for the pre-assembly of equipment, pipelines and structures, assembly of blocks (technological and communications);

c) lifting, transport vehicles, devices for installation and individual testing of equipment and pipelines, inventory production and sanitary buildings and structures provided for by the PPR are prepared; a production base was prepared for the assembly of blocks (technological and communications), the manufacture of pipelines and metal structures;

d) the measures for labor protection, fire safety and environmental protection provided for by the norms and rules have been carried out.

2.4. Preparation of installation work should be carried out in accordance with the schedule and include: the transfer by the customer of equipment, products and materials for installation; acceptance by the installation organization from the general contractor of industrial buildings, structures and foundations for the installation of equipment and pipelines; production of pipelines and structures; assembly of technological blocks, communication blocks and pre-assembly of equipment; delivery of equipment, pipelines and structures to the working area.

TRANSFER TO INSTALLATION OF EQUIPMENT,
PRODUCTS AND MATERIALS

2.5. Prior to the transfer of equipment, products and materials, the customer (general contractor) must present to the installation organization:

a) for equipment and fittings - accompanying documentation in accordance with GOST 24444-80;

b) for assembly units of pipelines P y over 10 MPa (100 kgf / cm 2) - assembly drawings of pipelines, supports and hangers and documents certifying their quality;

c) for materials - certificates of supplier enterprises.

In the absence of documents of the supplier enterprise, they can be replaced by documents corresponding to them in content, signed by responsible representatives of the customer.

The procedure for the transfer of equipment, products and materials is established by the "Rules on contracts for capital construction" and the "Regulations on the relationship of organizations - general contractors with subcontractors".

It is the responsibility of the customer to eliminate equipment defects found during the acceptance process.

2.8. Equipment and products for which the warranty period specified in the technical specifications has expired, and in the absence of such instructions - after a year, can be accepted for installation only after an audit, defect correction, testing, and other work provided for by the operational documentation. The results of the work performed must be entered in the forms, passports and other accompanying documentation in accordance with clause 2.5 of these rules.

2.9. Equipment, products and materials accepted for installation must be stored in accordance with the requirements of the documentation of manufacturers and PPR.

During storage, access for inspection should be provided, conditions should be created to prevent mechanical damage, moisture and dust from entering the internal cavities.

ACCEPTANCE FOR INSTALLATION OF BUILDINGS,
STRUCTURES AND FOUNDATIONS

2.10. In buildings and structures handed over for the installation of equipment and pipelines, the construction work provided for by the PPR, including those specified in clause 2.3 of these rules, must be carried out, underground utilities have been laid, backfilling and compaction of the soil, up to design marks, screeds have been arranged under floor coverings and channels, crane tracks and monorails were prepared and accepted, holes were made for laying pipelines and embedded parts were installed to install supports under them; foundations and other structures must be freed from formwork and cleared of construction debris, openings must be fenced, trays and hatches blocked.

2.11. In buildings, structures, on foundations and other structures handed over for the installation of equipment and pipelines, axes and height unwinds that determine the design position of the mounted elements must be applied with the necessary accuracy and in the manner established by SNiP for geodetic work in construction.

If the working drawings provide for the conductors for the foundation bolts remaining in the foundation array, then the installation of these conductors and the foundation bolts attached to them is carried out by the organization that mounts the equipment. Drilling wells in foundations, installation of foundation bolts fixed with glue and cement mixtures is carried out by a construction organization.

Foundation bolts embedded in the foundation, on the part protruding from the foundation, must be protected from corrosion.

Deviations of the actual dimensions from those specified in the working drawings should not exceed the values established by the relevant SNiP.

MANUFACTURE OF ASSEMBLY UNITS OF PIPELINES

2.15. The production of pipeline assembly units must be carried out in accordance with detail drawings, GOST 16037-80 and the requirements of departmental regulatory documents. Permanent connections must be made in accordance with the requirements of Sec. 4 of these rules.

ASSEMBLY OF TECHNOLOGICAL UNITS
AND COMMUNICATION UNITS

2.17. Assembly and welding of pipelines as part of the unit should be carried out in accordance with the requirements of Sec. 2 and 4 of these rules.

2.18. Technological blocks at the end of the assembly must be tested, painted, and the holes closed with plugs.

Testing of blocks or their assembly units is carried out in compliance with the requirements of Sec. 5 real rules.

Assembly units of communication units not connected to the equipment are tested after installation in the design position.

2.19. When storing the assembled blocks, the requirements of clause 2.9 of these rules must be observed.

2.20. Pipelines in communication blocks must be installed and fixed on permanent supports.

3. PRODUCTION OF INSTALLATION WORKS

GENERAL REQUIREMENTS

3.3. Loads on building structures arising in connection with the movement and installation of equipment and pipelines, as well as means for installation work, should not exceed the permissible installation loads (in magnitude, direction and place of application) specified in the working drawings. The possibility of increasing loads should be agreed with the design organization and the organization performing general construction work.

3.4. Equipment and pipeline fittings are not subject to disassembly and revision during installation, except for cases when it is provided for by state and industry standards and technical specifications agreed in the prescribed manner.

Dismantling of equipment that came sealed from the manufacturer is prohibited, except for the cases specified in clause 2.8 of these rules.

INSTALLATION OF EQUIPMENT

3.9. Installation of equipment must be carried out on a foundation that is free of dirt and oil stains.

3.11. Installation of equipment on temporary support elements should ensure the absence of deformations and the reliability of its fastening before grouting.

3.13. When using temporary support elements to align the equipment being mounted, the nuts should be pre-tightened in order to prevent the equipment from moving during grouting. The final tightening in accordance with the technical documentation of the manufacturer is carried out after the grout material reaches a strength of at least 70% of the design strength.

When using permanent support elements for alignment, the final tightening of the nuts is carried out before the gravy.

After reconciliation and fixing of the equipment on the foundation, an act of checking its installation should be drawn up.

3.15. Curing and maintenance of grout concrete must be carried out in accordance with the requirements of SNiP for the production of concrete work and PPR.

PIPING INSTALLATION

Before installing the assembly units of pipelines in the design position, the nuts on the bolts of the flange connections must be tightened and the welded joints welded.

To ensure the design slope of the pipeline, it is allowed to install metal linings under the supports welded to embedded parts or steel structures.

Support and suspension springs must be tightened in accordance with the instructions given in the working drawings.

3.18. When laying steel pipelines on overpasses, in channels or trays, the final fixing of pipelines in each temperature block should be carried out starting from fixed supports.

3.20. When installing glass, rubber-lined and plastic-lined pipes, it is not allowed to bend them by heating, insert fittings and "lugs" into assembled pipelines. Deviations from the design dimensions of pipelines along the length must be compensated by inserts (rings) installed in flange connections.

3.21. By the beginning of the installation of plastic and glass pipelines in the area of their laying, welding and thermal insulation work must be completed.

4. WELDED AND OTHER ALL-IN-ONE
PIPING CONNECTIONS

GENERAL REQUIREMENTS

4.10-4.14 of these rules.

In cases of unsatisfactory quality of welding test joints, identified:

a) during external examination, the joint is rejected and not subjected to other control methods;

4.5. Welding of steel pipelines is allowed at temperatures. specified in the rules approved by the USSR Gosgortekhnadzor, departmental regulations and industry standards.

Welding of pipelines made of non-ferrous metals, as well as welding and gluing of plastic pipelines is allowed at an ambient temperature of at least 5 °C.

4.7. Before installation of steel pipelines, welded joints of pipes and parts must be kept until they cool completely, and plastic pipelines with adhesive joints - at least 2 hours.

CONNECTION QUALITY CONTROL
STEEL PIPELINES

4.8. Quality control of welded joints of steel pipelines should be carried out by: systematic operational control; mechanical testing of specimens cut from trial joints; checking the continuity of the joints with the identification of internal defects by one of non-destructive methods control, as well as subsequent hydraulic or pneumatic tests in accordance with Sec. 5 real rules. Quality control methods for welded joints are given in GOST 3242-79.

Checking the quality of the welds of pipelines of category V is limited to the implementation of operational control.

In the cases specified in the project, stainless steel welded joints should be tested for a tendency to intergranular corrosion in accordance with GOST 6032-75 and departmental regulations.

4.9. Operational control should include checking the condition of the welding consumables, the quality of the preparation of the ends of pipes and pipeline parts, the accuracy of assembly operations, and the fulfillment of the specified welding mode.

4.10 . Inspection of welded joints of steel pipelines by radiographic or ultrasonic methods should be carried out after the elimination of defects identified by external inspection and measurements, and pipelines P Y over 10 MPa (100 kgf / cm 2) - after defects are detected by the magnetic particle or color method.

Welded seams should not have cracks, burns, craters, coarse scaly, undercuts with a depth of more than 0.5 mm. [In the welds of pipelines P Y over 10 MPa (100 kgf / cm 2), undercuts are not allowed].

4.11. The scope of control of welded joints of steel pipelines by non-destructive methods as a percentage of the total number of joints welded by each welder (but not less than one joint) should be for pipelines:

R y experience 10 MPa (100 kgf / cm 2)

As non-destructive control methods, taking into account specific conditions, it is necessary to use predominantly ultrasonic, electro-radiographic and radiographic methods using photographic paper.

The entire perimeter of the joint should be controlled.

For pipelines of category I-IV, the joints that are the worst according to the results of external inspection are subject to control.

The control of the root of the welded joints of pipelines Р y over 10 MPa (100 kgf / cm 2) from steels of all groups with a wall thickness of 16 mm or more should be carried out by radiographic method, and the final control of finished welded joints from steels of groups C, XG, XM - mainly ultrasonic flaw detection.

Finished welded joints of pipelines P y over 10 MPa (100 kgf / cm 2) before radiographic or ultrasonic testing should be controlled by a magnetic particle or color method. In this case, the surface of the seam and the area adjacent to it with a width of 20 mm from the edges of the seam are subject to control.

4.12 . The quality of welded joints of steel pipelines based on the results of radiographic testing should be assessed using a scoring system in accordance with mandatory Appendix 4. Welded joints should be rejected if their total score is equal to or greater for pipelines:

R y over 10 MPa (100 kgf / cm 2)

Welded joints rated by the specified or higher score are subject to correction, after which the number of joints doubled from the initial control volume, made by the welder who allowed the marriage, is subjected to additional control.

Welded joints of pipelines of categories III and IV, rated respectively with a total score of 4 and 5, are not subject to correction, but double the number of joints made by this welder is subjected to additional control.

If at additional control at least one joint will be rejected (and for pipelines of categories III and IV, it is estimated, respectively, with a total score of 4 and 5), 100% of the joints made by this welder are subjected to control. If at the same time at least one joint is rejected, the welder is suspended from welding work on pipelines.

4.13. The sensitivity of radiographic control must correspond (according to GOST 7512-82) for pipelines P y over 10 MPa (100 kgf / cm 2), categories I and II - class 2, for pipelines III and IV categories - class 3.

4.14 . According to the results of ultrasonic testing, welded joints of pipelines P y over 10 MPa (100 kgf / cm 2) are considered to be of high quality if there are no:

a) extended planar and volumetric defects;

b) volumetric non-extended defects with a reflected signal amplitude corresponding to an equivalent area of 2 mm 2 or more - with a pipe wall thickness of up to 20 mm inclusive and 3 mm 2 or more - with a wall thickness of more than 20 mm;

c) volumetric non-extended defects with a reflected signal amplitude corresponding to an equivalent area of up to 2 mm 2 - with a pipe wall thickness of up to 20 mm inclusive and up to 3 mm 2 - with a wall thickness of more than 20 mm, in an amount of more than three for every 100 mm of the seam.

Welded joints of steel pipelines of category I-IV must meet the requirements established by industry standards. Upon receipt of unsatisfactory results of ultrasonic testing of at least one joint, double the number of joints made by this welder is inspected. If the results of the repeated control are unsatisfactory, 100% of the joints are inspected. A welder who has allowed a marriage may be allowed again to weld pipelines only after passing tests according to programs approved by the USSR ministry (department).

4.15. Correction by local sampling and subsequent half-welding (without re-welding the entire joint) are subject to sections of the welded seam of steel pipelines, if the dimensions of the sample after removing the defective section of the seam do not exceed the values \u200b\u200bspecified in Table. one.

Table 1

Depth of sampling, % to the nominal thickness of the pipe wall or the calculated section of the weld	Total length, % to the nominal outer perimeter of the welded joint
For pipelines R y St. 10 MPa (100 kgf / cm 2)
	Not standardized
St. 15 to 30


For pipelines of category I-IV
	Not standardized

A welded joint in which, in order to correct a defective area, it is required to make a sample larger than the allowable one according to Table. 1 must be completely removed and a "coil" welded in its place.

All defective sections of the welded joint, identified during external examination and measurements, control by ultrasonic, magnetic particle or color method, are subject to correction.

In joints rejected according to the results of radiographic inspection, the sections of the seam rated with the highest score, determined in accordance with clause 4.12 and mandatory Appendix 4, are subject to correction.

The same junction is allowed to be corrected no more than once. Correction of defects by undermarking is prohibited.

All repaired joint areas shall be inspected by non-destructive methods.

Information about the correction and re-inspection of joints must be included in the production documentation in accordance with the mandatory Appendix 2.

4.16. Welded joints of steel pipelines R y over 10 MPa (100 kgf / cm 2), as well as pipelines R y up to 10 MPa incl. (100 kgf / cm 2) from steels of the XM and HF groups that have undergone heat treatment.

According to the results of hardness measurement, welded joints are considered to be of high quality when performing following conditions:

a) a decrease in the hardness of the deposited metal by no more than 25 HB of the lower value of the hardness of the base metal;

b) exceeding the hardness of the deposited metal by no more than 20 HB of the upper value of the hardness of the base metal;

c) exceeding the difference in hardness of the base metal and the metal in the heat-affected zone by no more than 50 HB.

If the difference in hardness exceeds the allowable one, the joints should be heat treated again, and if the difference in hardness exceeds the allowable after repeated heat treatment, steeloscopy of the weld metal and the base metal of all the same type joints welded by this welder during the time after the last control check should be performed. If the chemical composition of the deposited metal does not correspond to the specified one, the joints are rejected.

QUALITY CONTROL OF PIPELINE CONNECTIONS
FROM NON-FERROUS METALS AND ALLOYS

4.17. Quality control of welded and soldered joints should be carried out by their external inspection, as well as hydraulic or pneumatic testing of pipelines in accordance with the instructions set forth in Sec. 5 real rules.

4.18. By appearance brazed seams should have a smooth surface with a smooth transition to the base metal. Influxes, captivity, shells, foreign inclusions and non-solder are not allowed.

4.19. Defective places brazed seams are allowed to be corrected by soldering followed by retesting, but not more than twice.

CONNECTION QUALITY CONTROL
PLASTIC PIPING

4.20. Quality control of joints of plastic pipelines should include incoming, operational and acceptance control (external inspection and measurements, accelerated quality control of welded joints and their mechanical tests).

4.21. During the incoming inspection of welded and adhesive joints, the quality of materials and products should be checked for compliance with the requirements of standards and departmental regulations.

4.22. The operational control of welded joints should include checking the quality of the assembly of pipes for welding, the quality of the surfaces of the ends of the pipes, the cleanliness of the working surfaces of the heating tool and the control of the welding mode.

The operational control of adhesive joints should include checking the quality of preparation of surfaces for gluing, compliance with the size of the gaps when assembling pipes and the modes of the gluing process.

4.23. All welded and adhesive joints are subject to inspection and measurement. Their appearance must meet the following requirements:

a) the weld bead obtained as a result of butt welding must be symmetrical and evenly distributed along the width and perimeter;

b) the weld bead should not have a sharp demarcation line, its surface should be smooth, without cracks, gas bubbles and foreign inclusions; when welding a socket, the bead must be evenly distributed along the end of the socket;

c) during gas bar welding of PVC pipes, there should be no voids between the bars, burnout of the material of products and welding rods, uneven strengthening of the welded joint in width and height, and its surface should be convex and have a smooth adjoining to the base material;

d) when gluing pipes, the gap between them must be filled with an adhesive film that protrudes evenly along the perimeter of the connection.

4.24. In butt-butt welding, if defects are found in the joint, the corresponding sections of the pipes are cut out and "coils" with a length of at least 200 mm are welded in. With bar welding, defective areas can be repaired without cutting.

4.25. An accelerated quality check of welded joints should be performed to set up welding equipment and make adjustments to the welding mode when a new batch of pipes is received by testing samples for tension, bending and peeling in accordance with the requirements of departmental regulatory documents.

4.26. Mechanical tests for tension and shear should be subjected to welded joints of pipelines of categories II and III.

0.5% of the total number of joints made at one facility, including at least one of the total number of joints made by one welder, is subject to control. Samples taken for control should be straight. The welded joint should be located in the center of the cut out area. The dimensions and quality indicators of the tested samples are taken in accordance with the requirements of departmental regulatory documents.

The time between welding and tensile and shear testing of specimens shall be at least 24 h.

If unsatisfactory results are obtained in a tensile or shear test of at least one joint, a re-check is performed on twice their number. In case of unsatisfactory results of the repeated check, all welded joints are rejected and cut out.

5. INDIVIDUAL TESTS
ASSEMBLED EQUIPMENT
AND PIPELINES

5.1. By the beginning of individual testing of process equipment and pipelines, the installation of lubrication, cooling, fire protection, electrical equipment, and protective grounding systems must be completed. automation required for individual testing, and commissioning was carried out to ensure the reliable operation of these systems directly related to individual testing of this technological equipment.

The procedure and terms for conducting individual tests and the commissioning works that ensure them must be established by schedules agreed upon by the installation and commissioning organizations, the general contractor, the customer and other organizations involved in the construction and installation work.

5.2. Vessels and apparatus, which were assembled at the construction site, should be tested for strength and tightness.

Vessels and devices entering the construction site fully assembled and tested at the factory, individual tests for strength and tightness are not additionally subjected. Type of tests (strength, tightness), test method (hydraulic, pneumatic, etc.), test pressure, duration and evaluation of test results should be indicated in the accompanying or working documentation.

5.3. Machines, mechanisms and units should be subjected to idle tests with verification of compliance with the requirements stipulated by the manufacturer's specifications.

Machines, mechanisms and units, which were assembled during the installation process, as well as those received for installation in an assembled and sealed form, are not subject to disassembly before testing.

5.4. Pipelines must be tested for strength and tightness.

Type (strength, tightness), method (hydraulic, pneumatic), duration and evaluation of test results should be taken in accordance with the working documentation.

The value of the test pressure (hydraulic and pneumatic) for strength in the absence of additional instructions in the working documentation should be taken in accordance with Table. 2.

table 2

Material pipeline	Pressure, MPa (kgf / cm 2)
Material pipeline	working, R	test

Steel: steel lined with plastic, enamel and other materials	Up to 0.5 (5) incl.	1,5 R, but not less than 0.2 (2)
Steel: steel lined with plastic, enamel and other materials		1,25 R,    0,8 (8)
Plastics, glass and other materials	Within the scope of these rules	1,25 R,    0,2 (2)
Non-ferrous metals and alloys		1,25 R,    0,1(1)

The test pressure for steel pipelines with a wall temperature of more than 400 ° C should be taken as 1.5 R, but not less than 0.2 MPa (2 kgf / cm 2).

The value of the test pressure for tightness must correspond to the working pressure.

5.5. The division (if necessary) of pipelines during testing into sections, the combination of strength and tightness tests and the method of detecting defects (coated with soapy water, the use of leak detectors, etc.) is accepted by the organization carrying out the tests, if there are no corresponding instructions in the working documentation. In this case, it is necessary to be guided by the requirements of safety regulations, fire safety, as well as the rules of the USSR Gosgortekhnadzor.

5.6. During hydraulic tests, it is allowed to tap steel pipelines with a hammer weighing no more than 1.5 kg, pipelines made of non-ferrous metals - no more than 0.8 kg.

During the pneumatic test, tapping is not allowed.

5 .7. Testing of plastic pipelines for strength and tightness should be carried out no earlier than 24 hours after welding or gluing joints.

5.8. Testing of equipment and pipelines controlled by authorities state supervision must be carried out in accordance with the requirements of the rules approved by these bodies.

In the event that during the testing of equipment and pipelines defects made during the installation work are detected, the test must be repeated after the defects have been eliminated.

It is not allowed to eliminate defects in vessels, apparatus and pipelines under pressure, and in mechanisms and machines - during their operation.

5.9. In the process of hydraulic testing of equipment and pipelines at low temperatures, measures should be taken to prevent freezing of the liquid (heating of the liquid, the introduction of additives that lower the freezing point).

5.10. After the completion of hydraulic tests, the liquid must be removed from pipelines, vessels and apparatuses, and the locking devices must be left in the open position.

5.11. During a pneumatic test, the pressure in the vessel, apparatus, pipeline should be raised gradually with inspection at the following stages: upon reaching 60% of the test pressure - for vessels, apparatus and pipelines operated at a working pressure of up to 0.2 MPa (2 kgf / cm 2), and upon reaching 30 and 60% of the test pressure - for vessels, apparatus and pipelines operated at a working pressure of 0.2 MPa (2 kgf / cm 2) and more. At the time of inspection, the pressure rise stops.

The final inspection is carried out at operating pressure and is usually combined with a leak test.

5.12. Prior to the commencement of pneumatic testing, instructions should be developed for the safe conduct of test work under specific conditions, which should be familiar to all participants in the test.

5.13. Pneumatic strength tests are not allowed:

a) for vessels, apparatuses, pipelines made of brittle materials (glass, cast iron, faolite, etc.);

b) for vessels, apparatuses and pipelines located in operating workshops;

c) for pipelines located on overpasses in channels and trays next to existing pipelines;

d) at overpressure [more than 0.4 MPa (4 kgf / cm 2)], if fittings made of gray cast iron are installed on vessels, apparatus or pipelines.

5.14. The test hydraulic or pneumatic pressure for strength must be maintained for 5 minutes, after which it is reduced to working pressure.

When testing glass pipelines, the test pressure is maintained for 20 minutes.

5.15. In the absence of instructions in the working documentation, the time for the tightness test should be determined by the duration of the inspection of vessels, apparatus, pipelines, and the tests are considered satisfactory if no gaps are found in detachable and one-piece connections and pressure drops on the pressure gauge, taking into account temperature changes during the test period.

5.16. The final stage of individual testing of equipment and pipelines should be the signing of their acceptance certificate after individual testing for comprehensive testing.

ATTACHMENT 1

obligationsbody

PROCEDURE FOR COMMISSIONING

1. Commissioning works include a set of works performed during the preparation and conduct of individual tests and comprehensive testing of equipment *.

* Here the concept of "equipment" covers the entire technological system of the facility, i.e., a complex of technological and all other types of equipment and pipelines, electrical, sanitary and other devices and automation systems that ensure the release of the first batch of products provided for by the project.

2. The period of individual testing (hereinafter referred to as individual testing) is understood as a period that includes installation and commissioning works that ensure the fulfillment of the requirements stipulated by the working documentation, standards and specifications necessary for individual testing of individual machines, mechanisms and assemblies in order to prepare equipment for acceptance working committee for comprehensive testing.

Note. Commissioning works are paid by the customer at the expense of the consolidated estimate for the commissioning of enterprises, buildings and structures, approved in the prescribed manner.

3. The period of complex testing of equipment (hereinafter referred to as complex testing) is understood as the period including commissioning work performed after the acceptance of the equipment by the working commission for complex testing, and the conduct of the most comprehensive testing before the object is accepted into operation by the state acceptance commission.

4. The work performed during the period of development of the design capacity after the acceptance of the object into operation by the state acceptance commission is not included in the complex of commissioning works and is carried out by the customer in the manner established by the relevant ministries and departments of the USSR.

The duration of the period of development of the design capacity is determined by the "Standards for the duration of the development of design capacities put into operation industrial enterprises, objects" approved by the State Planning Committee of the USSR.

5. Prior to the start of individual tests, commissioning works are carried out on electrical devices, automated systems control, sanitary and heat power equipment, the implementation of which ensures individual testing of technological equipment.

Individual tests of these devices, systems and equipment are carried out in accordance with the requirements given in the SNiP for the production of the corresponding type of installation work.

6 . During the complex testing period, they check, adjust and ensure the joint interconnected operation of the equipment in the technological process provided for by the project at idle, followed by transferring the equipment to work under load and bringing it to a stable design technological mode that ensures the release of the first batch of products in the amount established for the initial period the development of the design capacity of the facility, but in accordance with the "Standards for the duration of the development of the design capacities of industrial enterprises, facilities put into operation", approved by the State Planning Committee of the USSR.

Prior to the start of a comprehensive testing of equipment, automated and other means of emergency and fire protection should be used.

7. The volume and conditions of commissioning, including the duration of the period of comprehensive testing of equipment, the number of required operating personnel, fuel and energy resources, materials and raw materials, are determined by industry rules for accepting into operation completed construction enterprises, facilities, workshops and production facilities, approved by the relevant ministries and departments of the USSR in agreement with the Gosstroy of the USSR.

8. During the period of complex testing of equipment in operating conditions, the general and subcontracting organizations ensure the duty of their engineering and technical personnel to promptly involve the relevant employees in eliminating the identified defects in construction and installation works.

9. The composition of the commissioning works and the program for their implementation must comply with the technical conditions of the enterprises - manufacturers of equipment, the rules for labor protection and safety, fire safety, the rules of state supervision bodies.

10. Additional work not provided for by the design documentation identified during the start-up, attack and comprehensive testing of equipment is performed by the customer or, on his behalf, construction and installation organizations according to the documentation drawn up in the prescribed manner.

11. Equipment defects identified in the process of individual testing and complex testing of equipment, as well as commissioning, must be eliminated by the customer (or the manufacturer) before the object is accepted for operation.

12. The works and activities performed during the preparation and conduct of a comprehensive testing of the equipment specified in clause 6 are carried out according to the program and schedule developed by the customer or on his behalf by the commissioning organization and agreed with the general contractor and subcontracting installation organizations and, if necessary, with the chief personnel of enterprises - equipment manufacturers.

13. Comprehensive testing of equipment is carried out by the customer's operating personnel with the participation of engineering and technical workers of the general contractor, design and subcontracting installation organizations, and, if necessary, personnel of equipment manufacturers.

APPENDIX 2

Mandatory

PRODUCTION DOCUMENTATION,
DURING INSTALLATION OF EQUIPMENT
AND PIPELINES

During the installation of equipment and pipelines, the production documentation given in the table should be drawn up, and upon their delivery, transferred to the working commission (with the exception of those indicated in paragraphs 1 - 3).

№ p.p.	Documentation		Note

	The act of transferring working documentation for the production of work	Completeness of documents in accordance with SN 202-81 * and the standards of the project documentation system for construction; suitability for installation work, including testing, for the implementation of complete-block and nodal methods of work; availability of a work permit; date of acceptance of documentation; signatures of representatives of the customer, general contractor and installation organization
	The act of transferring equipment, products and materials for installation	According to the form of the Central Statistical Bureau of the USSR
	The act of readiness of buildings, structures, foundations for the production of installation work	According to the form of the act of intermediate acceptance of critical structures in accordance with SNiP for the organization of construction production
	The act of testing vessels and apparatus		Compiled for each vessel and apparatus to be tested
	Pipeline test report		Compose per pipeline line
	The act of testing machines and mechanisms	Name and item number according to working drawings; test duration in accordance with the manufacturer's instructions; conclusion about the test; signatures of representatives of the customer and the installation organization	Compiled for each machine or mechanism to be tested
	Certificate of survey of hidden works (during the installation of equipment and pipelines)	According to the form of the certificate of examination of hidden works in accordance with SNiP for the organization of construction production
	The act of checking the installation of equipment on the foundation	Name and item number according to working drawings; test results and compliance with the manufacturer's instructions; conclusion on the inspection and permission for gravy; signatures of representatives of the customer of the installation organization	Attached to the act is a form indicating the measurements taken during installation.
	Equipment acceptance certificate after individual tests	According to SNiP III-3-81
	Welding log		Compose only for pipelines of categories I and II and pipelines R y St. 10 MPa (100 kgf / cm 2)
	List of welders and thermists	Name of the object and installation management; surname, name and patronymic of welders and heat-treaters; brand, category, number and validity period of the certificate; signatures of the head of welding works and the head of the section
	Journal of accounting and checking the quality of control joints		Compose only for pipelines of categories I and II and pipelines R y St. 10 MPa (100 kgf / cm 2)
	Heat Treatment Journal

APPENDIX 3

Mandatory

MECHANICAL TESTING OF WELDED SPECIMENS
STEEL PIPELINES

Mechanical tests of welded specimens made from test joints must confirm compliance with the following requirements:

a) tensile strength in static tension must be not less than the lower limit of the tensile strength of the metal of the welded pipes;

b) the bending angles when tested for static bending must be not less than those given in the table;

Become	Bending angle, deg. at least
	Arc welding with wall thickness, mm		Gas welding
	less than 20	St. twenty	Gas welding

Carbonaceous with carbon content less than 0.23%
low-alloyed
Low alloy heat resistant
Martensitic-ferritic class
Austenitic grade

c) in a sample flattened to a clearance equal to three pipe wall thicknesses, there should be no cracks;

d) impact strength of the weld metal during arc welding of pipelines R y over 10 MPa (100 kgf / cm 2) and category I with a wall thickness of 12 mm or more, determined on type VI samples according to GOST 6996-66, with a notch located on the metal weld at a temperature of plus 20 ° C, should be for all steels, except for austenitic, at least 50 J / cm 2 (5 kgf m / cm 2), for austenitic - 70 J / cm 2 (7 kgf m / cm 2) .

APPENDIX 4

Mandatory

DETERMINING THE TOTAL QUALITY SCORE
WELDED JOINT OF STEEL PIPELINE
ACCORDING TO THE RESULTS OF RADIOGRAPHIC CONTROL

1. The total score of the quality of the welded joint is determined by adding the highest scores obtained in the separate assessment of the quality of the joint in accordance with Table. 1 and 2.

2. The assessment of the quality of welded joints of pipelines in points, depending on the size and length of lack of penetration along the axis of the weld, concavity and excess penetration at the root of the weld, as well as the presence of non-fusion and the third is indicated in Table. one.

Table 1

Grade in points	Lack of penetration along the axis of the seam, concavity and excess penetration at the root of the seam, the presence of non-fusion and cracks
Grade in points	Height (depth), % to nominal wall thickness	Total length by pipe perimeter

	There is no lack of fusion
	Weld root concavity up to 10%, but not more than 1.5 mm	Up to 1/8 perimeter
	Excess penetration of the root of the weld up to 10%, but not more than 3 mm
	Lack of penetration along the axis of the seam up to 10%, but not more than 2 mm	Up to 1/4 perimeter
	or up to 5%, but not more than 1 mm	Up to 1/2 perimeter
	Lack of penetration along the axis of the seam up to 20%, but not more than 3 mm,	Up to 1/4 perimeter
	or up to 10%, but not more than 2 mm,	Up to 1/2 perimeter
	or up to 5%, but not more than 1 mm	Not limited
		Regardless of the length
	Non-fusion between base metal and weld and between individual weld beads
	Lack of penetration along the axis of the seam more than 20% and more than 3 mm
Note. The value of the concavity of the root and the excess penetration for pipelines of categories I-IV are not standardized.

3. Permissible sizes of inclusions (pores) sawn during radiographic control, and their scores are indicated in Table. 2. In the absence of inclusions (pores), the section of the welded joint is assessed with a score of 1.

table 2

Grade in points	Wall thickness, mm	Inclusions (pores)		Clusters, length, mm	Total length in any section seam 100 m long
Grade in points	Wall thickness, mm	Width (diameter), mm	Length, mm	Clusters, length, mm	Total length in any section seam 100 m long






























	Regardless of the thickness	Inclusions (pores), accumulations, the size or total length of which exceed those established for point 3 of this table.
Notes: 1. When deciphering radiographic images, inclusions (pores) with a length of 0.2 mm or less are not taken into account if they do not form accumulations and networks of defects. 2. The number of individual inclusions (pores), the length of which is less than that indicated in the table, should not exceed 10 pcs. for score 1, 12 pcs. for score 2, 15 pcs. for score 3 on any section of the radiogram 100 m long, while their total length should not be more than indicated in the table. 3. For welded joints with a length of less than 100 m, the norms given in the table for the total length of inclusions (pores), as well as for the number of individual inclusions (pores) must be proportionally reduced. 4. The assessment of sections of welded joints of pipelines Р y over 10 MPa (100 kgf / cm 2), in which accumulations of inclusions (pores) are found, should be increased by one point. 5. The evaluation of sections of welded joints of pipelines of all categories, in which chains of inclusions (pores) are found, should be increased by one point.

4. When deciphering the images, the type of defects is determined according to GOST 19232-73 and their dimensions according to GOST 23055-78.

5. In the conclusion or journal of radiographic control, the score of the welded joint, determined according to Table. 1, the highest score of the welded joint section, determined according to table. 2, as well as the total quality score of the welded joint, for example 1/2-3 or 6/6-12.

SNiP 3.05.05-84

BUILDING REGULATIONS

Technological equipment

and technological pipelines

Introduction date 1985-01-01

DEVELOPED by VNIImontazhspetsstroy of the USSR Minmontazhspetsstroy (engineers V. Ya. Eidelman, Doctor of Technical Sciences V. V. Popovsky - leaders of the topic; Candidates of Technical Sciences V. I. Obaturov, Yu. V. Popov, R. I. Tavastsherna), Giproneftespetsmontazh of the USSR Ministry of Montazhspetsstroy (PhD I. S. Goldenberg) and Giprokhimmontazh of the USSR Minmontazhspetsstroy (engineers I. P. Petrukhin, M. L. Elyash).

INTRODUCED by the USSR Minmontazhspetsstroy.

PREPARED FOR APPROVAL by the Department of Technical Regulation and Standardization of the Gosstroy of the USSR (engineer B. A. Sokolov).

APPROVED by the Decree State Committee USSR on construction matters dated May 7, 1984 No. 72.

With the entry into force of SNiP 3.05.05-84 "Technological equipment and process pipelines", SNiP III-31-78 * "Technological equipment. Basic provisions" becomes invalid.

These rules apply to the production and acceptance of work on the installation of process equipment and process pipelines (hereinafter referred to as "equipment" and "pipelines") intended for the production, processing and transportation of initial, intermediate and final products at an absolute pressure of 0.001 MPa (0. 01 kgf/sq.cm) up to 100 MPa incl. (1000 kgf / sq. cm), as well as pipelines for supplying coolants, lubricants and other substances necessary for the operation of the equipment.

The rules must be observed by all organizations and enterprises involved in the design and construction of new, expansion, reconstruction and technical re-equipment of existing enterprises.

Work on the installation of equipment and pipelines controlled by the USSR Gosgortekhnadzor, including welding and quality control of welded joints, must be carried out in accordance with the rules and norms of the USSR Gosgortekhnadzor.

1. GENERAL PROVISIONS

1.1. When performing work on the installation of equipment and pipelines, it is necessary to comply with the requirements of SNiP for the organization of construction production, SNiP III-4-80, standards, specifications and departmental regulations approved in accordance with SNiP 1.01.01-82 *.

1.2. Work on the installation of equipment and pipelines must be carried out in accordance with the approved design estimates and working documentation, the project for the production of works (PPR) and the documentation of manufacturers.

1.3. Installation of equipment and pipelines should be carried out on the basis of the nodal method of construction and the complete-block method of installation.

Notes: 1. The nodal method of construction refers to the organization

construction and installation works with the division of the launch complex into

interconnected technological nodes - structurally and

technologically separate parts of the construction object, technical

readiness of which after completion of construction and installation works allows

autonomously, regardless of the readiness of the object as a whole, to produce

commissioning, individual testing and complex testing

aggregates, mechanisms and devices.

2. Under the complete-block method of installation is understood the organization of installation

equipment and pipelines with the maximum transfer of work from the construction

sites in the conditions of industrial production with aggregation of equipment,

pipelines and structures into blocks at supplying enterprises, as well as at

assembly and assembly enterprises of the construction industry and

construction and installation organizations with delivery to construction sites in the form of kits

block devices.

1.4. The documentation issued in accordance with clause 1.2 of the installation organization must provide for:

a) the use of technological blocks and communication blocks with the aggregation of their components based on the nomenclature and technical requirements approved or mutually agreed by the higher organizations of the customer and the contractor performing the installation work;

d) data on tolerances for calculating the accuracy of performing geodetic stakeouts and creating an internal geodetic stakeout base for equipment installation.

1.5. The general contractor must involve the installation organization in reviewing and drawing up an opinion on the construction organization project, constructive solutions for buildings and structures, as well as technological layouts, in which the possibility and basic conditions for performing work by complete-block and nodal methods should be determined.

1.6. The general contractor must provide, and the installation organization must receive from the general contractor (or, in agreement with him, directly from the customer) the necessary set of working documentation with the customer's mark on each drawing (copy) about acceptance for production.

1.7. The supply of equipment, pipelines and components and materials necessary for installation should be carried out according to a schedule agreed with the installation organization, which should provide for the priority supply of machines, apparatus, fittings, structures, products and materials included in the specifications for blocks to be manufactured by installation organizations.

1.8. The completion of the installation of equipment and pipelines should be considered the completion of individual tests performed in accordance with Sec. 5 of these rules, and the signing by the working commission of the equipment acceptance certificate.

1.9. At each construction site, during the installation of equipment and pipelines, it is necessary to keep general and special logs for the production of work in accordance with SNiP for the organization of construction production and draw up production documentation, the types and content of which must comply with the mandatory Appendix 2, and its forms should be established by departmental regulatory documents.

2. PREPARATION FOR INSTALLATION WORKS

General requirements

2.1. Installation of equipment and pipelines must be preceded by preparation in accordance with SNiP for the organization of construction production and this SNiP.

2.2. During general organizational and technical preparation, the following must be determined by the customer and agreed with the general contractor and the installation organization:

a) conditions for completing the facility with equipment and materials supplied by the customer, providing for the supply of equipment sets to the production line, process unit, process unit;

d) a list of equipment installed with the involvement of the installation supervision personnel of manufacturing enterprises;

e) conditions of transportation to the place of installation of large-sized and heavy equipment.

2.3. When preparing the installation organization for the production of work, there must be:

a) approved the WEP for the installation of equipment and pipelines;

b) work has been completed to prepare the site for the pre-assembly of equipment, pipelines and structures, assembly of blocks (technological and communications);

d) the measures for labor protection, fire safety and environmental protection provided for by the norms and rules have been carried out.

2.4. Preparation of installation work should be carried out in accordance with the schedule and include: the transfer by the customer of equipment, products and materials for installation; acceptance by the installation organization from the general contractor of industrial buildings, structures and foundations for the installation of equipment and pipelines; production of pipelines and structures; assembly of technological blocks, communication blocks and pre-assembly of equipment; delivery of equipment, pipelines and structures to the working area.

Transfer to the installation of equipment, products and materials

2.5. Prior to the transfer of equipment, products and materials, the customer (general contractor) must present to the installation organization:

a) for equipment and fittings - accompanying documentation in accordance with GOST 24444-80;

b) for assembly units of pipelines Py over 10 MPa (100 kgf / sq. cm) - assembly drawings of pipelines, supports and hangers and documents certifying their quality;

c) for materials - certificates of supplier enterprises.

In the absence of documents of the supplier enterprise, they can be replaced by documents corresponding to them in content, signed by responsible representatives of the customer.

2.6. Equipment, products, materials must be transferred for installation in a complete set on the block and technological unit in accordance with the working drawings. Pipelines Py over 10 MPa (100 kgf / sq. cm) are transferred to installation assembled in assembly units.

2.7. When transferring equipment for installation, it is inspected, checked for completeness (without disassembly into assembly units and parts) and compliance of the accompanying documentation with the requirements of working drawings, standards, specifications and other documents that determine the installation and technological requirements, checking for the availability and validity of the guarantee of enterprises - manufacturers.

It is the responsibility of the customer to eliminate equipment defects found during the acceptance process.

2.8. Equipment and products for which the warranty period specified in the technical specifications has expired, and in the absence of such instructions - after a year, can be accepted for installation only after an audit, defect correction, testing, and other work provided for by the operational documentation. The results of the work performed must be entered in the forms, passports and other accompanying documentation in accordance with clause 2.5 of these rules.

2.9. Equipment, products and materials accepted for installation must be stored in accordance with the requirements of the documentation of manufacturers and PPR.

During storage, access for inspection should be provided, conditions should be created to prevent mechanical damage, moisture and dust from entering the internal cavities.

Acceptance for installation of buildings, structures and foundations

2.10. In buildings and structures handed over for the installation of equipment and pipelines, the construction work provided for by the PPR, including those specified in clause 2.3 of these rules, must be carried out, underground utilities have been laid, backfilling and compaction of the soil to design levels have been made, screeds under the coatings have been arranged floors and channels, prepared and accepted crane runways and monorails, made holes for laying pipelines and installed embedded parts for installing supports under them; foundations and other structures must be freed from formwork and cleared of construction debris, openings must be fenced, trays and hatches blocked.

In buildings where equipment and pipelines are installed, the technical conditions for the installation of which provide special requirements to cleanliness, temperature conditions, etc., when handing over for installation, compliance with these conditions must be ensured.

2.11. In buildings, structures, on foundations and other structures handed over for the installation of equipment and pipelines, axes and elevations that determine the design position of the mounted elements must be applied with the necessary accuracy and in the manner established by SNiP for geodetic work in construction.

The height marks of the foundation for the installation of equipment requiring grouting should be 50-60 mm lower than the mark of the supporting surface of the equipment indicated in the working drawings, and at the locations of the protruding ribs of the equipment, 50-60 mm below the mark of these ribs.

2.12. In the foundations handed over for installation, foundation bolts and embedded parts must be installed, if their installation is provided for in the working drawings of the foundation, wells are made or wells are drilled for foundation bolts.

If the working drawings provide for the conductors for the foundation bolts remaining in the foundation array, then the installation of these conductors and the foundation bolts attached to them is carried out by the organization that mounts the equipment. Drilling wells in foundations, installation of foundation bolts fixed with glue and cement mixtures is carried out by a construction organization.

Foundation bolts embedded in the foundation, on the part protruding from the foundation, must be protected from corrosion.

2.13. Upon acceptance of buildings, structures and building structures for installation, an executive diagram of the location of foundation bolts, mortgages and other details of fastening equipment and pipelines must be simultaneously transferred.

Deviations of the actual dimensions from those specified in the working drawings should not exceed the values established by the relevant SNiP.

2.14. Buildings, structures and foundations necessary for the installation of a complex of equipment and pipelines that form a technological unit must be presented for acceptance for installation at the same time.

Production of assembly units of pipelines

2.15. The production of assembly units of pipelines must be carried out in accordance with the detail drawings, GOST 16037-80 and the requirements of departmental regulatory documents. Permanent connections must be made in accordance with the requirements of Sec. 4 of these rules.

2.16. Assembly units of pipelines transferred for installation must be completed according to the specification of detail drawings; welded joints are welded and checked, surfaces are primed (except for welded edges); pipe openings are closed with plugs.

The deviation of the linear dimensions of the assembly units of the pipeline should not exceed ± 3 mm per meter, but not more than ± 10 mm for the entire length of the assembly unit. Deviations of angular dimensions and misalignment of the axes should not exceed ± 2.5 mm per 1 m, but not more than ± 8 mm for the entire subsequent straight section of the pipeline.

Assembly of technological blocks

and communication blocks

2.17. Assembly and welding of pipelines as part of the unit should be carried out in accordance with the requirements of Sec. 2 and 4 of these rules.

2.18. Technological blocks at the end of the assembly must be tested, painted, and the holes closed with plugs.

Testing of blocks or their assembly units is carried out in compliance with the requirements of Sec. 5 real rules.

Assembly units of communication units not connected to the equipment are tested after installation in the design position.

2.19. When storing the assembled blocks, the requirements of clause 2.9 of these rules must be observed.

2.20. Pipelines in communication blocks must be installed and fixed on permanent supports.

3. PRODUCTION OF INSTALLATION WORKS

General requirements

3.1. When loading, unloading, moving, lifting, installing and aligning equipment and pipelines, their safety must be ensured. On-site transportation, installation and alignment are carried out in accordance with the PPR.

3.2. Equipment, pipelines, technological blocks and communication blocks must be securely rafters for the parts provided for this purpose or in the places indicated by the manufacturer. The release of equipment and pipelines from the slings should be carried out after they are securely fastened or installed in a stable position.

3.3. Loads on building structures arising in connection with the movement and installation of equipment and pipelines, as well as means for installation work, should not exceed the permissible installation loads (in magnitude, direction and place of application) specified in the working drawings. The possibility of increasing loads should be agreed with the design organization and the organization performing general construction work.

3.4. Equipment and pipeline fittings are not subject to disassembly and revision during installation, except for cases when it is provided for by state and industry standards and technical specifications agreed in the prescribed manner.

Dismantling of equipment that came sealed from the manufacturer is prohibited, except for the cases specified in clause 2.8 of these rules.

3.5. Before installation in the design position, the outer surfaces of equipment and pipelines must be cleaned of preservative lubricants and coatings, with the exception of surfaces that must remain covered with protective compounds during installation and operation of the equipment.

3.6. Equipment and pipelines contaminated, deformed, with damage to protective coatings and treated surfaces and other defects, are not subject to installation until the damage and defects are eliminated.

3.7. During the installation of equipment and pipelines, operational quality control of the work performed should be carried out. Identified defects must be eliminated before the start of subsequent operations.

3.8. Installation work at outdoor air temperatures below or above those provided for by the operating conditions of equipment and pipelines must be carried out in compliance with measures to ensure their safety.

Installation of equipment

3.9. Installation of equipment must be carried out on a foundation that is free of dirt and oil stains.

3.10. Equipment alignment should be carried out in accordance with the instructions in the manufacturer's documentation and working drawings with respect to specially fixed marks and benchmarks (with the required accuracy) axes and marks or with respect to previously installed equipment, with which the equipment being aligned is connected kinematically or technologically.

3.11. Installation of equipment on temporary support elements should ensure the absence of deformations and the reliability of its fastening before grouting.

3.12. The supporting surface of the equipment should fit snugly against the supporting elements, the adjusting screws - to the supporting plates, and the permanent supporting elements (concrete pads, metal linings, etc.) - to the foundation surface.

3.13. When using temporary support elements to align the equipment being mounted, the nuts should be pre-tightened in order to prevent the equipment from moving during grouting. The final tightening in accordance with the technical documentation of the manufacturer is carried out after the grout material reaches a strength of at least 70% of the design strength.

When using permanent support elements for alignment, the final tightening of the nuts is carried out before the gravy.

After reconciliation and fixing of the equipment on the foundation, an act of checking its installation should be drawn up.

3.14. The pouring of the equipment must be carried out by the construction organization no later than 48 hours after the written notification of the installation organization in the presence of its representative.

3.15. Curing and maintenance of grout concrete must be carried out in accordance with the requirements of SNiP for the production of concrete work and PPR.

Pipeline installation

3.16. Pipelines may only be connected to equipment fixed on supports. Pipelines should be connected to the equipment without distortion and additional tension. The fixed supports are fixed to the supporting structures after the pipelines are connected to the equipment.

Before installing the assembly units of pipelines in the design position, the nuts on the bolts of the flange connections must be tightened and the welded joints welded.

3.17. When installing supports and supporting structures under pipelines, the deviation of their position from the design in terms of the plan should not exceed ± 5 mm for pipelines laid indoors, and ± 10 mm for external pipelines, and the slope should not exceed +0.001, unless other tolerances are specifically provided project.

To ensure the design slope of the pipeline, it is allowed to install metal linings under the supports welded to embedded parts or steel structures.

Support and suspension springs must be tightened in accordance with the instructions given in the working drawings.

3.18. When laying steel pipelines on overpasses, in channels or trays, the final fixing of pipelines in each temperature block should be carried out starting from fixed supports.

3.19. Sections of pipelines enclosed in sleeves in places where pipelines are laid through walls and ceilings should not have joints. Pipelines must be insulated and painted prior to installation in the sleeve. Gaps between pipelines and sleeves must be sealed with non-combustible material.

3.20. When installing glass, rubber-lined and plastic-lined pipes, it is not allowed to bend them by heating, insert fittings and "lugs" into assembled pipelines. Deviations from the design dimensions of pipelines along the length must be compensated by inserts (rings) installed in flange connections.

3.21. By the beginning of the installation of plastic and glass pipelines in the area of their laying, welding and thermal insulation work must be completed.

3.22. Glass pipelines should be mounted after the installation of equipment, as well as metal and plastic pipelines. When fixing glass pipes with metal brackets, a gasket made of elastic material should be installed between the bracket and the glass pipe.

3.23. Glass pipelines, if necessary, should be freed from products transported by gravity by purging with inert gas or air at a pressure of not more than 0.1 MPa (1 kgf / sq. cm). It is not allowed to blow glass pipelines with steam.

3.24. When installing glass pipelines, flanged or coupling detachable connections with sealing elastic gaskets that are chemically resistant to the media used when flushing pipelines must be used.

4. WELDED AND OTHER ALL-IN-ONE

PIPING CONNECTIONS

General requirements

4.1. Welders are allowed to weld joints of steel pipelines Py over 10 MPa (100 kgf / sq. cm), categories I-IV (according to SN 527-80) if they have documents in accordance with the Rules for the certification of welders approved by the USSR Gosgortekhnadzor. Welders who have not passed the specified certification, but have welded test joints, may be allowed to weld joints of steel pipelines of category V.

4.2. Welders (for any type of welding) who are starting to weld pipelines for the first time at the installation of a given facility or who have had a break in their work for more than 2 months, as well as all welders in cases of using new welding materials or equipment, regardless of whether they have certification documents, must weld test joints under conditions identical to those in which pipelines are welded at this facility.

4.3. Trial joints of steel pipelines must be subjected to external inspection, mechanical tests in accordance with GOST 6996-66, in accordance with mandatory Appendix 3, as well as continuity testing by non-destructive testing methods in accordance with the requirements of paragraphs. 4.8, 4.10-4.14 of these rules.

In cases of unsatisfactory quality of welding test joints, identified:

a) during external examination, the joint is rejected and not subjected to other control methods;

4.4. Workers who have been trained and passed tests in accordance with programs approved by the USSR ministry (department) are allowed to make permanent joints made of non-ferrous metals and alloys, to weld and glue plastic pipelines.

4.5. Welding of steel pipelines is allowed to be carried out at temperatures specified in the rules approved by the USSR Gosgortekhnadzor, departmental regulations and industry standards.

Welding of pipelines made of non-ferrous metals, as well as welding and gluing of plastic pipelines is allowed at an ambient temperature of at least 5 degrees C.

4.6. The surface of the ends of pipes and pipeline parts to be joined must be treated and cleaned before welding in accordance with the requirements of departmental regulations and industry standards.

4.7. Before installation of steel pipelines, welded joints of pipes and parts must be kept until they cool completely, and plastic pipelines with adhesive joints - at least 2 hours.

Quality control of steel pipeline connections

4.8. Quality control of welded joints of steel pipelines should be carried out by: systematic operational control; mechanical testing of specimens cut from trial joints; checking the continuity of joints with the identification of internal defects by one of the non-destructive control methods, as well as subsequent hydraulic or pneumatic tests in accordance with Sec. 5 real rules. Quality control methods for welded joints are given in GOST 3242-79.

Checking the quality of the welds of pipelines of category V is limited to the implementation of operational control.

In the cases specified in the project, stainless steel welded joints should be tested for a tendency to intergranular corrosion in accordance with GOST 6032-75 and departmental regulations.

4.9. Operational control should include checking the condition of the welding consumables, the quality of the preparation of the ends of pipes and pipeline parts, the accuracy of assembly operations, and the fulfillment of the specified welding mode.

4.10. Inspection of welded joints of steel pipelines by radiographic or ultrasonic methods should be carried out after the elimination of defects identified by external examination and measurements, and pipelines Py over 10 MPa (100 kgf / sq. cm) - after defects are detected by the magnetic particle or color method.

Welded seams should not have cracks, burns, craters, coarse scaly, undercuts with a depth of more than 0.5 mm. [In the welds of pipelines Py over 10 MPa (100 kgf / sq. cm), undercuts are not allowed].

4.11. The scope of control of welded joints of steel pipelines by non-destructive methods as a percentage of the total number of joints welded by each welder (but not less than one joint) should be for pipelines:

As non-destructive control methods, taking into account specific conditions, it is necessary to use predominantly ultrasonic, electro-radiographic and radiographic methods using photographic paper.

The entire perimeter of the joint should be controlled.

For pipelines of category I-IV, the joints that are the worst according to the results of external inspection are subject to control.

The control of the root of the welded joints of pipelines Рy over 10 MPa (100 kgf / sq. cm) from steels of all groups with a wall thickness of 16 mm or more should be carried out by radiographic method, and the final control of finished welded joints from steels of groups C, KhG, KhM - mainly ultrasonic flaw detection.

Finished welded joints of pipelines Py over 10 MPa (100 kgf / sq. cm) before radiographic or ultrasonic testing should be controlled by a magnetic particle or color method. In this case, the surface of the seam and the area adjacent to it with a width of 20 mm from the edges of the seam are subject to control.

4.12. The assessment of the quality of welded joints of steel pipelines based on the results of radiographic testing should be carried out according to the point system in accordance with the mandatory Appendix 4. Welded joints should be