SNiP 3.05.05-84
BUILDING REGULATIONS
Technological equipment
and technological pipelines
Introduction date 1985-01-01
DEVELOPED by the Research Institute of Installation and Special Construction of the USSR Ministry of Installation and Special Construction (Eng. 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 of the USSR State Committee for Construction of 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 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 refers to the organization
building- installation work 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 comprehensive 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 conditions industrial production with equipment aggregation,
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 their aggregation 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 performing the installation work;
c) the possibility of supplying technological blocks and communication blocks to the installation site in an 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, of 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 must receive from the general contractor (or, in agreement with him, directly from the customer) the necessary kit working documentation with a mark of the customer 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 installation organization completes the installation work, 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 mandatory Appendix 2, and its forms should be established by departmental regulatory documents.
2. PREPARATION FOR INSTALLATION WORKS
2.1. The 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;
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 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 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.
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 Py over 10 MPa (100 kgf / sq. cm) 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 disassembling 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 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 clause 2.3 of these rules, underground utilities were laid, backfilling and compaction of the soil were carried out to design levels, screeds were installed for floor coverings and channels, crane tracks and monorails were prepared and accepted, holes were made 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 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, on foundations and other structures handed over for the installation of equipment and pipelines, they must be applied with the necessary accuracy and in the manner established by SNiP on geodetic works in construction, axes and height marks 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 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 performed by Building 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. The 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 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.
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 block 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 unit 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 civil works.
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 conditions 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. Alignment of equipment should be carried out in accordance with the instructions in the manufacturer's documentation and working drawings regarding axes and marks specially fixed by marks and benchmarks (with the required accuracy) or relative to previously installed equipment, with which the equipment being calibrated 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 - 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 to be 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 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.
Installation of pipelines
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 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 design dimensions 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, flange 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 Рy 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 an 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, the welder who performed the 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 USSR Ministry (department).
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 from 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 connected 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 are completely cooled, 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 materials, 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 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 Py 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
CONSTRUCTION
DEVELOPED BY VNIImontazhspetsstroy of the USSR Minmontazhspetsstroy (Eng. 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 (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).
With the entry into force of SNiP 3.05.05-84 "Technological equipment and process pipelines", SNiP III becomes invalid. 31.78 * "Technological equipment. Basic provisions".
|
State Committee |
building codes and rules |
SNiP 3.05.05-84 |
|
for construction (Gosstroy of the USSR) |
Technological 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.
Works on the installation of equipment and pipelines controlled by the USSR Gosgortskhnadzor, including assembly and quality control of welded joints, must be carried out in accordance with the rules and norms of the USSR Gosgortekhnadzor.
1.1. When carrying out 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 package-block method of installation is understood as the organization of installation of equipment and pipelines with the maximum transfer of work from construction site in the conditions of 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 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;
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 an 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, of 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 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.
After the installation organization completes the installation work, 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 mandatory Appendix 2, and its forms should be established by departmental regulatory documents.
2.1. The 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, transport vehicles, devices for installation and individual testing of equipment and pipelines, inventory production and sanitary buildings and structures provided for by the PPR have been 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.
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 R 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 the "Regulations on the relationship of organizations - general contractors with subcontractors".
2.7. When transferring equipment for installation, it is inspected, checked for completeness (without disassembling 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 the warranty period has expired. 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 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 screeds for floor coverings and channels, crane runways 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 for geodetic work in construction, axes and height unwinding, which determine the design position of the elements to be mounted.
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 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. The 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.
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.
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.
2.17. Assembly and welding of pipelines as part of the block 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 unit 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.
3.1. 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 conditions 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.
3.9. Installation of equipment must be carried out on a foundation that is free of dirt and oil stains.
3.10. Alignment of equipment should be carried out in accordance with the instructions in the manufacturer's documentation and working drawings regarding axes and marks specially fixed by marks and benchmarks (with the required accuracy) or relative to previously installed equipment, with which the equipment being calibrated 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 using temporary support elements to align the equipment to be 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 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.
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 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, flange or coupling detachable connections with sealing elastic gaskets that are chemically resistant to the media used when flushing pipelines must be used.
4.1. Welders are allowed to weld joints of steel pipelines P y over 10 MPa (100 kgf / cm 2), category 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 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 an 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 connected 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 are completely cooled, and plastic pipelines with adhesive joints - at least 2 hours.
BUILDING REGULATIONS
TECHNOLOGICAL EQUIPMENT AND PROCESS PIPING
SNiP 3.05.05-84
USSR STATE COMMITTEE FOR CONSTRUCTION
Moscow 1985
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 Minmontazhspetsstroy (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). With the entry into force of SNiP 3.05.05-84 "Technological equipment and technological pipelines" loses its force from SNiP III-31-78 * "Technological equipment. Basic provisions".
| 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 | |
| R y experience 10 MPa (100 kgf / cm 2) | 100 |
| I category | 20 |
| II" | 10 |
| III" | 2 |
| IV" | 1 |
| R y over 10 MPa (100 kgf / cm 2) | 2 |
| Category I | 3 |
| II „ | 3 |
| III „ | 5 |
| IV „ | 6 |
Table 1
|
Depth of sampling, % to the nominal thickness of the pipe wall or the calculated section of the weld |
Total length, % of the nominal outer perimeter of the welded joint |
|
For pipelines Py St. 10 MPa (100 kgf / cm 2) |
|
| Up to 15 | Not standardized |
| St. 15 to 30 | Up to 35 |
| " 30 " 50 | " 20 |
| St. 50 | " 15 |
|
Dfor pipelines I-IV category |
|
| up to 25 | Not standardized |
| St. 25 to 50 | Up to 50 |
| St. 50 | " 25 |
Table 2
|
Material l |
Pressure, MPa (kgf / cm 2) |
|
|
Working, R |
Test |
|
| Steel: steel lined with steel, enamel and other materials | Up to 0.5 (5) incl. | 1.5 R, but not less than 0.2 (2) |
| St. 0.5 (5) | 1.25 R, „ „ „ 0.8 (8) | |
| Plastmasses, glass and other materials | In the field of application of these rules | 1.25 R, „ „ „ 0.2 (2) |
| Nonferrous metals and alloys | Same | 1.25 Р, „ „ „ 0 .1(1) |
Required
POR YODOK PRODUCTION OF COMMISSIONING WORKS
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 by the project. 2. The period of individual testing (hereinafter referred to as individual testing) is understood as the period, including installation and commissioning, ensuring the fulfillment of the requirements stipulated by the working documentation, standards and technical conditions necessary for carrying out individual testing of individual machines, mechanisms and assemblies in order to prepare equipment for acceptance by the working commission for comprehensive testing. Note. Commissioning works are paid by the customer at the expense of the consolidated estimate for putting enterprises, buildings and structures into operation, approved in the prescribed manner. 3. The period of comprehensive testing of equipment (hereinafter referred to as comprehensive testing) is understood as the period including commissioning work performed after the acceptance of the equipment by the working commission for comprehensive testing, and conducting the most comprehensive testing before the object is accepted into operation by the state acceptance committee. 4. Works performed during the period of development of the design capacity after acceptance by the state acceptance commission of the object into operation are not included in the complex of commissioning works and are carried out by the customer in the manner established by the relevant ministries and departments USSR. The duration of the period of development of the design capacity is determined by the "Norms 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. 5. Prior to the start and individual tests, commissioning works are carried out on electrical devices, automated control systems, sanitary and heat power equipment, the implementation of which ensures individual testing of technological equipment. Individual tests of the indicated devices, systems and equipment are carried out in accordance with the requirements given in the SNiP for the performance of the corresponding type of installation work. 6 . During the period of complex testing, they check, adjust and ensure the joint interconnected operation of the equipment in the technological process provided for by the project at idle, with the subsequent transfer of 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 volume established for the initial period of development of the design capacity of the facility, and in accordance with the "Standards for the duration of 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 complex testing of equipment, automated and other means of emergency and fire protection should be used. 7. The scope 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 the acceptance into operation of completed construction enterprises, facilities, workshops and industries, approved by the relevant ministries and departments of the USSR in agreement with the Gosstroy of the USSR. 8. The general and subcontracting organizations, during the period of complex testing of equipment in operational modes, ensure the duty of their engineering and technical personnel to promptly involve the relevant workers in the elimination of 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, and the rules of state supervision bodies. 10. Identified during the start-up, attacks and complex testing of equipment additional, not provided project document ation the work is performed by the customer or, on his instructions, construction and installation organizations on the basis of documentation drawn up in the prescribed manner. 11. Defects in equipment identified during 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. Works and activities performed during the preparation and conduct of a comprehensive testing of equipment, specified in paragraph 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 subcontractors assembling organizations and, if necessary, with the chief staff of enterprises - equipment manufacturers. 13. Comprehensive testing of the 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, the personnel of the equipment manufacturers.
Mandatory
PRODUCTION DOCUMENTATION,
IS ISSUED WHEN INSTALLING THE 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 that specified in paragraphs 1 - 3).
|
№ |
Dock mind entatsya |
Note |
|
| The act of transferring working documentation for the performance 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 production and 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 the pumps and devices | Compile for each vessel and apparatus to be tested | ||
| Pipeline test report | Compiled for each pipeline line | ||
| The act of testing machines and mechanisms ZMO in | Name and position number according to working drawings; duration of the test in accordance with the manufacturer's instructions; conclusion about the test; Signatures of representatives of the customer and the installer | 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 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 position number according to working drawings; test results and compliance with the manufacturer's instructions; conclusion on inspection and permission for gravy; signatures of the customer's representatives of the installation organization | A form is attached to the act indicating the measurements taken during installation | |
| Equipment acceptance certificate after individual tests | According to SNiP III-3-81 | ||
| Welding Journal | They are only for pipelines of category 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; stamp, category, number and validity period of the certificate; according to the signature of the head of welding works and the head of the section | ||
| Journal of accounting and checking the quality of control joints | Content is set by the BCH | They are only for pipelines of categories I and II and pipelines R y St. 10 MPa (100 kgf / cm 2) | |
| Heat treatment log | Content set by BCH or industry standards |
Mandatory
MECHANICAL AND TESTING OF WELDED SPECIMENS
STEEL PIPELINES
Mechanical tests of welded specimens made from trial joints must confirm compliance with the following requirements: a) static tensile strength must not be less than the lower limit of the metal strength of welded pipes; b) the bending angles in the static bend test must not be less than those given in the table;
|
Bending angle, deg. at least |
|||
|
Arc welding with wall thickness, mm |
Gas welding |
||
| Carbonaceous with carbon content less than 0.23% | |||
| low alloyed | |||
| Low alloy heat resistant | |||
| Martensitic-ferritic class | |||
| Austenitic to class | |||
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. Evaluation of the quality of welded joints of pipelines in points, depending on the magnitude and extent of lack of penetration along the axis of the weld, concavity and excess penetration in the root of the weld, as well as the presence of non-fusion and third, are indicated in Table. one .
Table 1
|
Grade |
Lack of penetration along the axis of the seam, concavity and excess penetration |
|
|
Height (depth), % to |
Total length by |
|
| There is no lack of fusion | ||
| Concavity of the root seam up to 10%, but not more than 1.5 mm |
Up to 1/8 perimeter |
|
| Exceeding the 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 |
|
| cracks |
Regardless of the length |
|
| Lack of 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 of penetration for pipelines of category I-IV are not standardized. | ||
table 2
|
Grade |
Wall thickness, mm |
Inclusions (pores) |
Accumulation, length, mm |
Total length in any area |
|
|
Width (diameter), mm |
Length, mm |
||||
| Until 3 | |||||
| St. 3 to 5 | |||||
| „ 5 „ 8 | |||||
| „ 8 „ 11 | |||||
| „ 11 „ 14 | |||||
| „ 14 „ 20 | |||||
| „ 20 „ 26 | |||||
| „ 26 „ 34 | |||||
| St. 34 | |||||
| Until 3 | |||||
| St. 3 to 5 | |||||
| „ 5 „ 8 | |||||
| „ 8 „ 11 | |||||
| „ 11 „ 14 | |||||
| „ 14 „ 20 | |||||
| „ 20 „ 26 | |||||
| „ 26 „ 34 | |||||
| „ 34 „ 45 | |||||
| St. 45 | |||||
| Until 3 | |||||
| St. 3 to 5 | |||||
| „ 5 „ 8 | |||||
| „ 8 „ 11 | |||||
| „ 11 „ 14 | |||||
| „ 14 „ 20 | |||||
| „ 20 „ 26 | |||||
| „ 26 „ 34 | |||||
| „ 34 „ 45 | |||||
| St. 45 | |||||
| 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 specified in the table, should not exceed 10 pcs for a score of 1, 1 2 pcs. for score 2, 15 pcs. for score 3 on any section of the radiogram 100 m long, and 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 tables e for the total length of inclusions (pores), as well as for the number of individual inclusions (pores) must be proportionally reduced. 4. Evaluation of sections of welded joints of pipelines P y over 10 MPa (100 kgf / cm 2), in which accumulations of inclusions (pores) are found, should be increased by one point. 5. 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. | |||||
