SNiP 3.05.07-85

BUILDING REGULATIONS

AUTOMATION SYSTEMS

Date of introduction 1986-07-01

DEVELOPED BY GPI Proektmontazhavtomatika Minmontazhspetsstroy USSR (M.L. Vitebsky - topic leader, V.F. Valetov, R.S. Vinogradova, Y.V. Grigoriev, A.Ya.Minder, N.N. Pronin).

INTRODUCED by the USSR Ministry of Montazhspetsstroy.

PREPARED FOR APPROVAL BY Glavtekhnormirovanie Gosstroy USSR (B.A. Sokolov).

APPROVED by Decree of the USSR State Committee for Construction Affairs dated October 18, 1985 No. 175.

AGREED with the USSR Ministry of Health (letter dated December 24, 1984 No. 122-12/1684-4), Gosgortechnadzor of the USSR (letter dated February 6, 1985 No. 14-16/88).

With the entry into force of SNiP 3.05.07-85 “Automation Systems”, SNiP III-34-74 “Automation System” loses its validity.

Amendment No. 1 was made to SNiP 3.05.07-85 “Automation Systems”, approved by Decree of the USSR State Construction Committee No. 93 dated October 25, 1990 and put into effect on January 1, 1991. The paragraphs and tables to which changes were made are noted in these I am familiar with building codes and regulations.

These rules and regulations apply to the production and acceptance of work on the installation and commissioning of automation systems (monitoring, management and automatic regulation) of technological processes and engineering equipment for the construction of new, expansion, reconstruction and technical re-equipment of existing enterprises, buildings and structures in sectors of the national economy.

These rules do not apply to the installation of: automation systems for special facilities (nuclear installations, mines, enterprises for the production and storage of explosives, isotopes); railway transport signaling systems; communication and alarm systems; automatic fire extinguishing and smoke removal systems; instruments using radioisotope measurement methods; devices and automation equipment built into machines, machines and other equipment supplied by manufacturers.

The rules establish requirements for the organization, production and acceptance of work on the installation of instruments, automation equipment, switchboards, consoles, aggregate and computer complexes of automated process control systems (APCS), electrical and pipe wiring, etc., as well as for the adjustment of installed automation systems.

The rules must be followed by all organizations and enterprises involved in the design, installation and commissioning of automation systems.

1. GENERAL PROVISIONS

1.1. When carrying out installation and commissioning of automation systems, the requirements of these rules, SNiP 3.01.01-85, SNiP III-3-81, SNiP III-4-80 and departmental regulatory documents approved in the manner established by SNiP 1.01.01- must be observed. 82*.

1.2. Work on the installation of automation systems must be carried out in accordance with the approved design and estimate documentation, work execution plan (WPP), as well as technical documentation of manufacturing enterprises.

1.3. Installation of instruments and automation equipment with the nodal construction method and the complete block method of installation of process equipment and pipelines, carried out in accordance with SNiP 3.05.05-84, must be carried out in the process of enlarged assembly of technological lines, assemblies and blocks.

1.4. The general contractor must involve the organization that installs automation systems in the consideration of the construction organization project (COP) in terms of performing installation work using complete block and unit methods, layout of special rooms intended for automation systems (control rooms, operator rooms, equipment rooms, sensor rooms, etc. . p.), ahead of schedule for their construction and transfer for installation.

1.5. When installing and commissioning automation systems, documentation should be drawn up in accordance with the mandatory Appendix 1 of these rules.

1.6. The end of the installation of automation systems is the completion of individual tests performed in accordance with Section. 4 of these rules, and signing an acceptance certificate for installed automation systems in the scope of working documentation.

2. PREPARATION FOR INSTALLATION WORK

General requirements

2.1. Installation of automation systems must be preceded by preparation in accordance with SNiP 3.01.01-85 and these rules.

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

a) conditions for equipping the facility with instruments, automation equipment, products and materials supplied by the customer, providing for their delivery to a technological unit, unit, line;

b) a list of instruments, automation equipment, aggregate and computing complexes of automated process control systems, installed with the involvement of installation supervision personnel of manufacturing enterprises;

c) conditions for transporting panels, control panels, group installations of devices, pipe blocks to the installation site.

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

a) working documentation has been received;

b) a work project has been developed and approved;

c) the construction and technological readiness of the facility for installation of automation systems has been accepted;

d) acceptance of equipment (instruments, automation equipment, switchboards, consoles, aggregate and computer complexes of automated process control systems), products and materials from the customer and general contractor was carried out;

e) enlarged assembly of units and blocks was carried out;

f) the labor protection and fire safety measures provided for by the norms and regulations have been completed.

2.4. Before the installation of automation systems begins, the installation organization, together with the general contractor and the customer, must resolve the following issues:

a) advanced deadlines have been established for the construction of special premises intended for automation systems, ensuring the timely conduct of individual tests of technological lines, components and blocks put into operation;

b) technological lines, components, blocks and the timing of their transfer for individual testing after installation of automation systems are determined;

c) the necessary production workshops, household and office premises equipped with heating, lighting and telephone are provided;

d) the use of main construction machines at the disposal of the general contractor (vehicles, lifting and unloading machines and mechanisms, etc.) is provided for moving large-sized units (blocks of panels, consoles, pipes, etc.) from the production bases of installation organizations before installing them in the design position on the construction site;

f) permanent or temporary networks are provided that supply electricity, water, compressed air to the objects, with devices for connecting equipment and tools;

g) measures are provided in accordance with the project (detailed design) to ensure the protection of instruments and automation equipment, switchboards, consoles, pipes and electrical wiring from the influence of precipitation, groundwater and low temperatures, from pollution and damage, and computer equipment - and from static electricity.

2.5. In the working documentation of automation systems accepted for work, the installation organization must check the following:

a) interconnection with technological, electrical, plumbing and other working documentation;

b) references in working drawings to devices and automation equipment supplied by manufacturers complete with technological equipment;

c) taking into account the requirements for high factory and installation readiness of equipment, advanced methods of installation work, maximum transfer of labor-intensive work to assembly and procurement workshops;

e) the presence of explosive or fire hazardous areas and their boundaries, categories, groups and names of explosive mixtures; installation locations of separation seals and their types;

f) availability of documentation for the installation and testing of pipe lines for pressures above 10 MPa (100 kgf/sq.cm).

2.6. Acceptance of construction and technological readiness for installation of automation systems should be carried out step by step in individual completed parts of the facility (control rooms, operator rooms, technological units, units, lines, etc.).

2.7. The delivery of products and materials to the site by the organization installing automation systems should, as a rule, be carried out using containers.

Acceptance of the object for installation

2.8. Before the installation of automation systems begins at the construction site, as well as in buildings and premises rented out for installation of automation systems, construction work must be completed as provided for in the working documentation and the work production plan.

In the building structures of buildings and structures (floors, ceilings, walls, equipment foundations), in accordance with architectural and construction drawings, there must be:

Alignment axes and working elevation marks are marked:

channels, tunnels, niches, grooves, embedded pipes for hidden wiring, openings for the passage of pipe and electrical wiring were made with the installation of boxes, sleeves, pipes, frames and other embedded structures in them;

platforms for servicing instruments and automation equipment have been installed;

Mounting openings are left for moving large-sized units and blocks.

2.9. In special rooms intended for automation systems (see clause 1.4), as well as in production premises in places intended for installation of instruments and automation equipment, construction and finishing work must be completed, formwork, scaffolding and scaffolding must be dismantled, not required for installation of automation systems, and debris was removed.

2.10. Special rooms intended for automation systems (see clause 1.4) must be equipped with heating, ventilation, lighting, and, if necessary, air conditioning, installed in a permanent manner, have glazing and door locks. The temperature in the premises must be maintained at least 5°C.

After the specified premises are handed over for installation of automation systems, construction work and installation of sanitary systems are not allowed in them.

2.11. In premises intended for the installation of technical means of aggregate and computing complexes of automated process control systems, in addition to the requirements of paragraphs. 2.9; 2.10, air conditioning systems must be installed and dust must be thoroughly removed.

Painting premises with chalk whitewash is prohibited.

The windows must be provided with means of protection from direct sunlight (blinds, curtains).

2.12. Before the installation of automation systems on process, sanitary and other types of equipment and pipelines begins, the following must be installed:

embedded and protective structures for installation of primary devices. Embedded structures for installing select pressure, flow and level devices must end with shut-off valves;

instruments and automation devices built into pipelines, air ducts and apparatus (restrictive devices, volume and velocity meters, rotameters, flow sensors, flow meters and concentration meters, level meters of all types, regulatory bodies, etc.).

2.13. At the site, in accordance with technological, plumbing, electrical and other working drawings, there must be:

main pipelines and distribution networks were laid with the installation of fittings for the selection of coolants to heated devices of automation systems, as well as pipelines for the removal of coolants;

equipment was installed and main and distribution networks were laid to provide devices and automation equipment with electricity and energy carriers (compressed air, gas, oil, steam, water, etc.), as well as pipelines were laid for the removal of energy carriers;

a sewer network was laid to collect wastewater from the drainage pipes of automation systems;

a grounding network has been completed;

The installation of automatic fire extinguishing systems was completed.

2.14. The grounding network for technical means of aggregate and computing complexes of automated process control systems must meet the requirements of the manufacturers of these technical means.

2.15. Acceptance of the facility is formalized by an act of readiness of the facility for installation of automation systems in accordance with mandatory Appendix 1.

Transfer for installation of equipment, products, materials and technical documentation

2.16. The transfer of equipment, products, materials and technical documentation for installation is carried out in accordance with the requirements of the Rules on Contracts for Capital Construction" approved by the Council of Ministers of the USSR and the "Regulations on the relationship of organizations - general contractors with subcontractors" approved by the USSR State Construction Committee and the USSR State Planning Committee.

2.17. Accepted equipment, materials and products must comply with working documentation, state standards, technical specifications and have appropriate certificates, technical passports or other documents certifying their quality. Pipes, fittings and connections for oxygen piping must be degreased, which must be indicated in the documentation confirming this operation.

Upon acceptance of equipment, materials and products, completeness, absence of damage and defects, integrity of paint and special coatings, integrity of seals, availability of special tools and devices supplied by manufacturers are checked.

Parts of pipe lines for pressures above 10 MPa (100 kgf/sq.cm) are submitted for installation in the form of products prepared for installation (pipes, fittings for them, connecting parts, hardware, fittings, etc.) or assembled into assembly units , completed according to the specifications of the detail drawings. Pipe openings must be closed with plugs. Products and assembly units with welded seams must be provided with certificates or other documents confirming the quality of welded joints in accordance with SNiP 3.05.05-84.

Elimination of equipment defects discovered during the acceptance process is carried out in accordance with the “Rules on capital construction contracts”.

Clauses 2.18-2.20 are excluded.

3. INSTALLATION WORK

General requirements

3.1. Installation of automation systems must be carried out in accordance with the working documentation, taking into account the requirements of manufacturers of devices, automation equipment, aggregate and computing systems, provided for by the technical specifications or operating instructions for this equipment.

Installation work should be carried out using an industrial method using small-scale mechanization, mechanized and electrified tools and devices that reduce the use of manual labor.

3.2. Work on installation of automation systems should be carried out in two stages:

At the first stage, the following should be carried out: preparation of mounting structures, assemblies and blocks, electrical wiring elements and their enlarged assembly outside the installation area; checking the presence of embedded structures, openings, holes in building structures and building elements, embedded structures and selecting devices on process equipment and pipelines, the presence of a grounding network; laying in the foundations, walls, floors and ceilings of pipes and blind boxes for hidden wiring; marking routes and installing supporting and load-bearing structures for electrical and pipe wiring, actuators, and instruments.

At the second stage, it is necessary to carry out: laying pipe and electrical wiring along the installed structures, installing switchboards, cabinets, consoles, instruments and automation equipment, connecting pipe and electrical wiring to them, and individual testing.

3.3. Mounted instruments and automation equipment of the electrical branch of the State Instrumentation System (GSP), panels and consoles, structures, electrical and pipe wiring, subject to grounding in accordance with the working documentation, must be connected to the grounding loop. If there are requirements from manufacturers, the means of aggregate and computing complexes must be connected to a special grounding circuit.

Installation of structures

3.4. Marking of installation sites for structures for instruments and automation equipment should be carried out in accordance with the working documentation.

When marking, the following requirements must be taken into account:

when installing structures, hidden wiring, strength and fire resistance of building structures (foundations) must not be damaged;

The possibility of mechanical damage to mounted devices and automation equipment must be excluded.

3.5. The distance between supporting structures on horizontal and vertical sections of the route for laying pipe and electrical wiring, as well as pneumatic cables, must be taken according to the working documentation.

3.6. Supporting structures must be parallel to each other, as well as parallel or perpendicular (depending on the type of structure) to building structures (foundations).

3.7. Structures for wall-mounted appliances must be perpendicular to the walls. Racks installed on the floor must be plumb or level. When installing two or more racks side by side, they must be fastened together with detachable connections.

3.8. The installation of boxes and trays should be carried out in large blocks assembled in assembly and procurement workshops.

3.9. Fastening boxes and trays to supporting structures and connecting them to each other must be bolted or welded.

When using a bolted connection, the tight connection of the boxes and trays with each other and with the supporting structures must be ensured, as well as the reliability of the electrical contact must be ensured.

When connecting by welding, burning through boxes and trays is not allowed.

3.10. The location of the boxes after their installation should eliminate the possibility of moisture accumulation in them.

3.11. At the intersection of settlement and expansion joints of buildings and structures, as well as in external installations, boxes and trays must have compensating devices.

3.12. All structures must be painted according to the instructions given in the working documentation.

3.13. Passages of pipe and electrical wiring through walls (external or internal) and ceilings must be carried out in accordance with the working documentation.

Pipe wiring

3.14. These rules apply to the installation and testing of pipe wiring of automation systems (pulse, command, supply, heating, cooling, auxiliary and drainage according to the recommended Appendix 3), operating at an absolute pressure from 0.001 MPa (0.01 kgf/sq.cm) to 100 MPa (1000 kgf/sq.cm).

The rules do not apply to the installation of pipe wiring inside switchboards and control panels.

3.15. Installation and testing of pipe wiring of automation systems must meet the requirements of SNiP 3.05.05-84 and this SNiP.

3.16. The equipment, fixtures, fixtures, and work methods used during the installation of pipe wiring must ensure the possibility of installing the following pipes and pneumatic cables:

steel water and gas pipes according to GOST 3262-75, ordinary and light with nominal bore 8; 15; 20; 25; 40 and 50 mm;

cold-deformed seamless steel according to GOST 8734-75 with an outer diameter of 8; 10; 14; 16 and 22 mm with a wall thickness of at least 1 mm;

seamless cold- and heat-deformed from corrosion-resistant steel according to GOST 9941-81 with an outer diameter of 6; 8; 10; 14; 16 and 22 mm with a wall thickness of at least 1 mm. For pipe lines with pressure over 10 MPa (100 kgf/sq.cm), pipes with an outer diameter of 15; 25 and 35 mm;

copper according to GOST 617-72 with an outer diameter of 6 and 8 mm with a wall thickness of at least 1 mm;

made of aluminum and aluminum alloys in accordance with GOST 18475-82 with an outer diameter of 6 and 8 mm with a wall thickness of at least 1 mm;

from low-density polyethylene (high pressure) according to the technical specifications of the manufacturing enterprises with an outer diameter of 6 mm with a wall thickness of 1 mm and an outer diameter of 8 mm with a wall thickness of 1 and 1.6 mm;

pressure ones made of polyethylene according to GOST 18599-83, heavy with an outer diameter of 12; 20 and 25 mm;

polyvinyl chloride flexible according to the technical specifications of manufacturing enterprises with an internal diameter of 4 and 6 mm with a wall thickness of at least 1 mm;

rubber according to GOST 5496-78 with an internal diameter of 8 mm and a wall thickness of 1.25 mm;

pneumatic and pneumoelectric with polyethylene tubes (pneumatic cables) according to the technical specifications of the manufacturers (polyethylene tubes must have dimensions 6X1; 8X1 and 8X1.6 mm).

The choice of a specific range of pipes depending on the properties of the transported medium, the magnitude of the parameters being measured, the types of transmitted signals and the distances between the connected devices must be carried out in accordance with the working documentation.

3.17. Pipe wiring should be laid along the shortest distances between connected devices, parallel to walls, ceilings and columns, as far as possible from technological units and electrical equipment, with a minimum number of turns and intersections, in places accessible for installation and maintenance, without sharp fluctuations in ambient temperature, not subject to extreme heat or cold, shock and vibration.

3.18. Pipe lines for all purposes should be laid at a distance that ensures ease of installation and operation.

In dusty rooms, pipe lines should be laid in one layer at distances from walls and ceilings that allow mechanical dust cleaning.

3.19. The total width of a group of horizontal and vertical pipe wiring fixed to one structure should be no more than 600 mm when servicing the wiring on one side and 1200 mm on both sides.

3.20. All pipe lines filled with a medium with a temperature above 60°C, laid at a height of less than 2.5 m from the floor, must be fenced.

3.21. Pipe lines, with the exception of those filled with dry gas or air, must be laid with a slope that ensures condensate drainage and gas (air) removal, and have devices for their removal.

The direction and magnitude of the slopes must correspond to those specified in the working documentation, and in the absence of such instructions, the wiring must be laid with the following minimum slopes: pulse (see recommended Appendix 3) to pressure gauges for all static pressures, membrane or pipe draft gauges, gas analyzers - 1:50; pulse to steam, liquid, air and gas flow meters, level regulators, drain gravity oil lines of hydraulic jet regulators and drain lines (see recommended Appendix 3) - 1:10.

The slopes of heating pipes (see recommended Appendix 3) must comply with the requirements for heating systems. Pipe lines requiring different slopes, fixed to common structures, should be laid along the greatest slope.

3.22. The working documentation must provide for measures to ensure compensation for thermal elongations of pipe lines. For cases where the working documentation provides for self-compensation of temperature elongations of pipe lines at turns and bends, it must indicate at what distances from the turn (bend) the pipes should be secured.

3.23. Metal pipe lines at the points of transition through expansion joints of buildings must have U-shaped expansion joints. The installation locations of compensators and their number must be indicated in the working documentation.

3.24. On pipe lines laid with a slope, U-shaped expansion joints, “ducks” and similar devices should be located so that they are the highest or lowest point of the pipe line and exclude the possibility of accumulation of air (gas) or condensate in them.

3.25. The minimum height for laying external pipe lines should be (in the clear): in the impassable part of the territory, in places where people pass - 2.2 m; at intersections with highways - 5 m.

3.26. Installation of pipe wiring must ensure: the strength and density of the wiring, connecting pipes to each other and connecting them to fittings, instruments and automation equipment; reliability of fixing pipes to structures.

3.27. Pipe lines must be secured to supporting and load-bearing structures using standardized fasteners; Fastening pipe lines by welding is prohibited. Fastening must be done without compromising the integrity of the pipes.

3.28. It is not permitted to attach pipe lines to the outside of switchboards, instrument housings and automation equipment.

It is allowed to secure pipe lines to disassembled process equipment near sampling devices, but not more than at two points.

Fastening pipe lines to non-disassembled process equipment is permitted by agreement with the customer. Pipe lines at the points of access to the equipment must have detachable connections.

3.29. Pipe lines must be secured:

at distances of no more than 200 mm from the branch parts (on each side);

on both sides of turns (pipe bends) at distances that ensure self-compensation of thermal elongations of pipe lines;

on both sides of the fittings of settling and other vessels, if the fittings and vessels are not secured; if the length of the connecting line on any side of the vessel is less than 250 mm, the pipe is not attached to the supporting structure;

on both sides of U-shaped expansion joints at a distance of 250 mm from their bend when installing expansion joints in places where pipe lines pass through expansion joints in the walls.

3.30. Changing the direction of pipe lines, as a rule, must be done by bending the pipes accordingly. It is allowed to use standardized or normalized bent elements to change the direction of the pipe route.

3.31. Pipe bending methods are selected by the installation organization.

Curved pipes must meet the following basic requirements:

a) there should be no folds, cracks, creases, etc. on the curved part of the pipes;

b) the ovality of the pipe cross-section at bending points is allowed no more than 10%.

3.32. The minimum radius of the internal pipe bend curve must be:

for cold-bent polyethylene pipes:

PNP - not less than 6D n, where D n is the outer diameter; PVP - not less than 10D n;

for polyethylene pipes bent in a hot state - at least 3D n;

for polyvinyl chloride plasticized pipes (flexible), bent in a cold state - not less than 3D n;

for pneumatic cables - not less than 10D n;

for steel pipes bent in a cold state - at least 4D n, and for steel pipes bent in a hot state - at least 3D n;

for annealed copper pipes bent in a cold state - at least 2D n;

for annealed pipes made of aluminum and aluminum alloys when bending them in a cold state - at least 3D no.

3.33. Pipe connections during installation may be made using both permanent and detachable connections. When connecting pipe lines, it is prohibited to eliminate gaps and misalignment of pipes by heating, tensioning or bending the pipes.

3.34. The connection of pipe lines to embedded structures (see recommended Appendix 3) of process equipment and pipelines, to all instruments, automation equipment, switchboards and consoles must be made using detachable connections.

3.35. For detachable connections and pipe connections, normalized threaded connections must be used. In this case, for pipes made of stainless steel, aluminum and aluminum alloys, connecting parts specially designed for these pipes must be used.

3.36. It is prohibited to place pipe connections of any type: on expansion joints; on curved areas; in places of fastening on supporting and load-bearing structures; in passages through walls and ceilings of buildings and structures; in places inaccessible for maintenance during operation.

3.37. Pipe connections should be located at a distance of at least 200 mm from the fastening points.

3.38. When connecting pipes in group pipe lines, the connections must be offset to ensure that the tool can be used when installing or dismantling pipe lines.

When laying in blocks in groups, the distances between detachable connections must be indicated in the working documentation, taking into account the block installation technology.

3.39. Rubber pipes or pipes made of other elastic material connecting pipe lines with instruments and automation equipment must be worn over the entire length of the connecting tips; pipes must be laid without kinks, freely.

3.40. Fittings (valves, taps, gearboxes, etc.) installed on pipe lines made of copper, aluminum and plastic pipes must be rigidly fixed to structures.

3.41. All pipework must be marked. The markings applied to the tags must correspond to the markings of the pipe lines given in the working documentation.

3.42. Application of protective coatings should be carried out on a well-cleaned and degreased surface of the pipes. The color of the pipe lines must be specified in the working documentation.

Steel pipes intended to protect pipe lines must be painted on the outside. Plastic pipes cannot be painted. Pipes made of non-ferrous metals are painted only in cases specified in the working documentation.

3.43. When installing plastic pipes and pneumatic cables, it is necessary to use a minimum number of connections, using the maximum length of the pipes and pneumatic cable.

3.44. Plastic pipes and pneumatic cables should be laid over fireproof structures and laid freely on them, without tension, taking into account changes in length due to temperature differences.

In places of contact with sharp edges of metal structures and fasteners, unarmored cables and plastic pipes must be protected with gaskets (rubber, polyvinyl chloride) protruding 5 mm on both sides of the edges of the supports and fastening brackets.

Fastening parts must be installed so as not to deform the cross-section of plastic pipes and pneumatic cables.

3.45. Compensation for temperature changes in the length of plastic pipe lines must be ensured through the rational arrangement of movable (free) and fixed (rigid) fasteners and curved elements of the pipe line itself (bends, ducks, “snake” gasket).

3.46. The placement of fixed fasteners that do not allow the movement of wiring in the axial direction should be done in such a way as to divide the route into sections, the temperature deformation of which occurs independently of one another and is self-compensating.

The fastenings should be fixed at junction boxes, cabinets, panels, etc., as well as in the middle of the areas between two turns.

In all other cases where movement of pipes and pneumatic cables in the axial direction is allowed, movable fasteners should be used.

3.47. Fastening plastic pipes and pneumatic cables at turns is not allowed.

The apex of the turn when laying horizontally must lie on a flat, solid support. At a distance of 0.5-0.7 m from the top of the turn, plastic pipes and pneumatic cables must be secured with movable fasteners.

3.48. Installation of plastic pipe lines must be done without damaging the pipes (cuts, deep scratches, dents, melting, burns, etc.). Damaged sections of pipes must be replaced.

3.49. Plastic pipes and pneumatic cables laid openly in places of possible mechanical influences at a height of up to 2.5 m from the floor must be protected from damage by metal casings, pipes or other devices. The design of protective devices must allow their free dismantling and maintenance of pipe lines.

Sections of pipes up to 1 m long for instruments, actuators and automation equipment installed on process pipelines and apparatus may not be protected.

3.50. External pipe wiring made of plastic pipes must be protected from direct sunlight.

3.51. Plastic pipes and pneumatic cables in boxes and trays laid horizontally must be laid freely without fastenings. When laid in boxes and trays laid vertically, pipes and cables must be secured at intervals of no more than 1 m.

In places where the route turns or branches, for all cases of laying trays, pneumatic cables must be secured in accordance with clause 3.47 of these rules.

When laying plastic pipes and pneumatic cables, fireproof partitions with a fire resistance limit of at least 0.75 hours every 50 m must be installed in boxes.

Armored pneumatic cables are usually not allowed to be laid in boxes.

Pipes and cables are removed from the box through holes in its wall or bottom. Plastic bushings must be installed in the holes.

3.52. The distances between the places of fastening of plastic pipes or bundles of them should be no more than those indicated in the table. 1.

3.53. Pipe lines made of plastic pipes through which liquids or moist gases are transported, as well as plastic pipes at an ambient or filling temperature of 40 ° C and above, must be laid in horizontal sections on solid supporting structures, and in vertical sections the distance between fasteners must be reduced twice as compared to that indicated in the table. 1.

Table 1

3.54. When connecting to devices, equipment and bulkhead connections (taking into account the permissible bending radii), plastic pipes must have a reserve of at least 50 mm in case of possible damage during repeated re-installation of connections.

3.55. When laying pneumatic cables on cable structures, the following conditions must be met:

pneumatic cables must be laid in one layer;

the sag should be formed only under the influence of the pneumatic cable’s own weight and should not exceed 1% of the span length.

Fastening for horizontal installation should be carried out through one support.

3.56. When installing metal pipe lines, it is allowed to use any welding methods that ensure high-quality connections, if the type or method of welding is not specified in the working documentation.

3.57. Welding of steel pipelines and quality control of welded joints should be carried out in accordance with SNiP 3.05.05-84.

3.58. The method and technological regime for welding pipes, materials for welding and the procedure for monitoring welding must be adopted in accordance with the standard technological process for welding OST 36-57-81 and OST 36-39-80, approved by the USSR Ministry of Installation and Special Construction. The types and structural elements of welds must comply with GOST 16037-80.

3.59. Permanent connection of copper pipes must be carried out by soldering in accordance with GOST 19249-73.

Quality control of solder joints should be carried out by external inspection, as well as hydraulic or pneumatic testing.

In appearance, solder seams should have a smooth surface. Sagging, caps, shells, foreign inclusions and non-drinking are not allowed.

3.60. Single metal pipe runs must be secured to each support.

Additional requirements for the installation of oxygen piping

3.61. Work on the installation of oxygen piping must be carried out by personnel who have studied the special requirements for performing this work.

3.62. During the installation and welding of the pipeline, contamination of its internal surface with fats and oils must be prevented.

3.63. If it is necessary to degrease pipes, fittings and connections, it must be carried out using the technology provided for in OST 26-04-312-83 (approved by the Ministry of Chemical Engineering), fireproof solvents and detergents dissolved in water.

Pipes, fittings and connections intended for pipe lines filled with oxygen must be provided with a document indicating that they have been degreased and are suitable for installation.

3.64. For threaded connections, it is prohibited to wind flax, hemp, or coat them with red lead and other materials containing oils and fats.

Additional requirements for the installation of pipe lines for pressures above 10 MPa (100 kgf/sq.cm)

3.65. Before the start of work on the installation of pipe lines over 10 MPa (100 kgf/sq. cm), responsible persons are appointed from among the engineering and technical workers who are entrusted with the management and quality control of the work on the installation of pipe lines and documentation.

Designated engineering and technical personnel must be certified after special training.

3.66. All elements of pipe lines for pressures above 10 MPa (100 kgf/sq.cm) and welding materials arriving at the warehouse of the installation organization are subject to external inspection. At the same time, the availability and quality of the relevant documentation is also checked and an acceptance certificate for pipes, fittings, pipeline parts, etc. is drawn up.

Paragraphs 3.67-3.74 are excluded.

3.75. When installing and adjusting pipe lines of automation systems filled with flammable and toxic liquids and gases, as well as pipe lines with Рy ≤ 10 MPa (100 kgf/sq.cm), one should be guided by the requirements of the regulatory documents given in recommended Appendix 4.

Testing of pipe lines

3.76. Fully assembled pipe lines must be tested for strength and density in accordance with SNiP 3.05.05-84.

The type (strength, density), method (hydraulic, pneumatic), duration and assessment of test results must be taken in accordance with the working documentation.

3.77. The value of test pressure (hydraulic and pneumatic) for strength and density in pipe lines (impulse, drainage, supply, heating, cooling, auxiliary and command systems of hydraulic automation) in the absence of instructions in the working documentation should be taken in accordance with SNiP 3.05.05-84.

3.78. Command pipe lines filled with air at an operating pressure P p ≤ 0.14 MPa (1.4 kgf/sq.cm) should be tested for strength and density pneumatically with a test pressure P pr = 0.3 MPa (3 kgf/sq.cm. cm).

3.79. Pressure gauges used for testing must have:

accuracy class not lower than 1.5;

case diameter not less than 160 mm;

measurement limits equal to 4/3 of the measured pressure.

3.80. Tests of plastic pipe lines and pneumatic cables must be carried out at a temperature of the test environment not exceeding 30°C.

3.81. Testing of plastic pipe lines is permitted no earlier than 2 hours after the last welding of the pipes.

3.82. Before testing for strength and density, all pipework, regardless of purpose, must be subjected to:

a) external inspection in order to detect installation defects, compliance with their working documentation and readiness for testing;

b) purging, and when indicated in the working documentation - flushing.

3.83. Pipe lines must be purged with compressed air or inert gas, dried and free of oil and dust.

Pipe lines for steam and water can be purged and washed with a working medium.

3.84. Pipe lines must be purged with a pressure equal to the working pressure, but not more than 0.6 MPa (6 kgf/sq.cm).

If it is necessary to purge at a pressure of more than 0.6 MPa (6 kgf/sq.cm), purge should be carried out in accordance with the instructions given in special diagrams for purging process pipelines, agreed with the customer.

Blowing should be done for 10 minutes until clean air appears.

Purge of pipe lines operating at excess pressure up to 0.1 MPa (1 kgf/sq.cm) or absolute pressure from 0.001 to 0.095 MPa (0.01 to 0.95 kgf/sq.cm) should be carried out with air pressure no more than 0.1 MPa (1 kgf/sq.cm).

3.85. Washing of pipe lines should be carried out until clear water appears steadily from the outlet pipe or drainage device of the pipe lines being washed.

At the end of flushing, the pipe lines must be completely freed of water and, if necessary, purged with compressed air.

3.86. After purging and flushing, the pipe lines must be plugged.

The design of the plugs must exclude the possibility of their failure at test pressures.

Pipe lines intended for operation at Р р ≤ 10 MPa (100 kgf/sq.cm) must be equipped with plugs or blind lenses with shanks.

3.87. Pipelines supplying test liquid, air or inert gases from pumps, compressors, cylinders, etc. to pipe lines must be pre-tested with hydraulic pressure in assembled form with shut-off valves and pressure gauges.

3.88. For hydraulic tests, water should be used as the test fluid. The water temperature during testing must be no lower than 5°C.

3.89. For pneumatic tests, air or inert gas shall be used as the test medium. Air and inert gases must be free from moisture, oil and dust.

3.90. For hydraulic and pneumatic testing, the following stages of pressure increase are recommended:

1st - 0.3 R pr;

2nd - 0.6 R pr;

3rd - up to R pr;

4th - reduced to Рр [for pipe lines with Рр up to 0.2 MPa (2 kgf/sq.cm), only the 2nd stage is recommended]

The pressure at stages 1 and 2 is maintained for 1-3 minutes; During this time, according to the readings of the pressure gauge, there is no pressure drop in the pipework.

Test pressure (3rd stage) is maintained for 5 minutes.

On pipelines with pressure Р р ≥ 10 MPa, the test pressure is maintained for 10-12 minutes.

Raising the pressure to the 3rd stage is a test of strength.

Operating pressure (4th stage) is maintained for the time necessary for final inspection and identification of defects. Stage 4 pressure is a density test.

3.91. Defects are eliminated after reducing the pressure in the pipework to atmospheric pressure.

After eliminating the defects, the test is repeated.

3.92. Pipe lines are considered suitable for service if during the strength test there is no pressure drop on the pressure gauge and during a subsequent tightness test no leaks are found in the welds and connections.

Upon completion of the tests, a report must be drawn up.

3.93. Pipe lines filled with flammable, toxic and liquefied gases (except for gas pipelines with a pressure of up to 0.1 MPa (1 kgf/sq.cm), pipe lines filled with oxygen, as well as pipe lines for pressures over 10 MPa (100 kgf/sq.cm. cm), for absolute pressure from 0.001 to 0.095 MPa (from 0.01 to 0.95 kgf/sq.cm) must be subjected to additional density tests with determination of pressure drop.

3.94. Before testing the pipe lines for tightness and determining the pressure drop, the pipe lines must be washed or purged.

3.95. For pipe lines with a pressure of 10-100 MPa (100-1000 kgf/sq.cm), before testing for density with determination of the pressure drop, safety valves must be installed on the pipe lines, pre-adjusted to open at a pressure exceeding the operating pressure by 8%. Safety valves must be provided for in the working documentation.

3.96. A density test with determination of pressure drop is carried out with air or an inert gas at a test pressure equal to the working pressure (P pr = P p), except for pipelines for absolute pressure from 0.001 to 0.095 MPa (from 0.01 to 0.95 kgf/sq.cm) which must be tested at the following pressure:

a) pipelines filled with flammable, toxic and liquefied gases - 0.1 MPa (1 kgf/sq.cm);

b) pipelines filled with ordinary media - 0.2 MPa (2 kgf/sq.cm).

3.97. The duration of additional testing for density and holding time under test pressure is established in the working documentation, but must be no less for pipelines:

3.98. Pipe lines are considered to have passed the test if the pressure drop in them does not exceed the values ​​​​indicated in the table. 2.

table 2

The specified standards apply to pipe lines with a nominal bore of 50 mm. When testing pipe lines with other nominal diameters, the rate of pressure drop in them is determined by the product of the above pressure drop values ​​​​by the coefficient calculated by the formula

where D y is the nominal diameter of the tested pipework, mm.

3.99. Upon completion of tests of pipe lines for density with determination of the pressure drop during the tests, a report must be drawn up.

3.100. When conducting pneumatic tests, the safety requirements set out in SNiP III-4-80 and “Rules for the construction and safe operation of pipelines for flammable, toxic and liquefied gases” (PUG-69) must be observed.

Electrical wiring

3.101. Installation of electrical wiring of automation systems (measurement, control, power, alarm circuits, etc.) with wires and control cables in boxes and trays, in plastic and steel protective pipes, on cable structures, in cable structures and in the ground; installation of electrical wiring in explosion and fire hazardous areas, installation of grounding (grounding) must meet the requirements of SNiP 3.05.06-85, taking into account the specific features of the installation of automation systems set out in the manuals for the specified SNiP.

3.102. Connection of single-wire copper conductors of wires and cables with a cross-section of 0.5 and 0.75 sq. mm and stranded copper conductors with a cross-section of 0.35; 0.5; 0.75 sq. mm to devices, devices, and clamp assemblies should, as a rule, be done by soldering if the design of their terminals allows this to be done (permanent contact connection).

If it is necessary to connect single-wire and multi-wire copper conductors of the specified sections to devices, devices and clamp assemblies that have leads and clamps for connecting conductors with a screw or bolt (dismountable contact connection), the conductors of these wires and cables must be terminated with lugs.

Single-wire copper conductors of wires and cables with a cross-section of 1; 1.5; 2.5; 4 sq. mm should, as a rule, be connected directly under the screw or bolt, and stranded wires of the same sections - using lugs or directly under the screw or bolt. In this case, the cores of single-wire and multi-wire wires and cables, depending on the design of the terminals and clamps of devices, devices and clamp assemblies, are terminated with a ring or pin; the ends of stranded wires (rings, pins) must be soldered; the pin ends can be crimped with pin lugs.

If the design of the terminals and clamps of devices, devices, and clamp assemblies requires or allows other methods of connecting single-wire and multi-wire copper cores of wires and cables, the connection methods specified in the relevant standards and technical specifications for these products must be used.

The connection of aluminum conductors of wires and cables with a cross-section of 2.0 sq. mm or more to devices, devices, and clamp assemblies should be carried out only with clamps that allow direct connection of aluminum conductors of the appropriate sections to them.

The connection of single-wire conductors of wires and cables (by screw or soldering) is allowed only to fixed elements of devices and devices.

The connection of wire and cable cores to devices, devices and automation equipment that have output devices in the form of plug connectors must be carried out using stranded (flexible) copper wires or cables laid from clamp assemblies or junction boxes to devices and automation equipment.

Separable and non-separable connections of copper, aluminum and aluminium-copper conductors of wires and cables with terminals and clamps of devices, devices, clamp assemblies must be made in accordance with the requirements of GOST 10434-82, GOST 25154-82, GOST 25705-83, GOST 19104-79 and GOST 23517-79.

3.103. The connection of steel protective pipes to each other, to duct boxes, etc. in premises of all classes should be carried out using standard threaded connections.

In rooms of all classes, except for explosion and fire hazardous areas, it is allowed to connect thin-walled steel protective pipes with sheet steel sleeves or steel pipes of larger diameter, followed by welding along the entire perimeter of the joints: in this case, burning through the pipes is not allowed.

3.104. The installed electrical wiring of automation systems must be subjected to an external inspection, which establishes compliance of the mounted wiring with the working documentation and the requirements of these rules. Electrical wiring that meets the specified requirements is subject to testing for insulation resistance.

3.105. Measuring the insulation resistance of electrical wiring of automation systems (measurement, control, power, alarm circuits, etc.) is carried out with a megger for a voltage of 500-1000 V. The insulation resistance should not be less than 0.5 MOhm.

When measuring insulation resistance, wires and cables must be connected to the terminal assemblies of panels, cabinets, consoles and junction boxes.

Devices, apparatus and wiring that do not allow testing with a megger with a voltage of 500-1000 V must be turned off for the duration of the test.

Based on the results of measuring the insulation resistance, a report is drawn up.

Shields, cabinets and consoles

3.106. Boards, cabinets and consoles must be transferred by the customer in a complete form for installation with equipment, fittings and installation products, with electrical and pipe internal wiring prepared for connecting external electrical and pipe wiring and devices, as well as with fasteners for the assembly and installation of switchboards, cabinets and consoles on site.

3.107. Separate boards, consoles and cabinets must be assembled into composite boards (operator rooms, control rooms) of any configuration using detachable connections.

Fastening threaded connections must be tightly and evenly tightened and protected from self-unscrewing.

3.108. Panels, cabinets and consoles must be installed on embedded structures. The exceptions are small-sized panels placed on walls and columns, and flat cabinets that do not require preliminary installation of embedded structures for installation.

The main method of fastening the supporting frames of shields to embedded structures is one-piece, carried out by welding.

During installation, panels, cabinets and consoles must be plumb and then secured.

Installation of auxiliary elements (decorative panels, mnemonic diagrams, etc.) must be carried out while maintaining the axial lines and verticality of the entire frontal plane of the shield. The angle of inclination of the mnemonic diagram specified in the working documentation must be maintained within the tolerances specified therein.

3.109. Inputs of electrical and pipe wiring into switchboards, cabinets and consoles must be carried out in accordance with OST 36.13-76, approved by the USSR Ministry of Montazhspetsstroy.

3.110. In order to increase the level of industrialization of installation work, it is necessary, as a rule, to use industrial automation premises, including complete operator rooms (COP) and complete sensor points (SPS). Industrial automation rooms must be delivered to the site with mounted panels, cabinets, consoles, pipes and electrical wiring. Only work on connecting external pipes and electrical wiring should be carried out at the site.

3.111. End seals and connections of pipe and electrical wiring inserted into switchboards, cabinets, consoles, KOP and KPD must be carried out in accordance with the requirements of SNiP 3.05.06-85 and these rules.

Instruments and automation equipment

3.112. Installation must include devices and automation equipment that have been tested and the corresponding protocols have been drawn up.

In order to ensure the safety of instruments and equipment from breakdown, dismantling and theft, their installation must be carried out after the written permission of the general contractor (customer).

3.113. Testing of instruments and automation equipment is carried out by the customer or specialized organizations engaged by him, who carry out work on setting up instruments and automation equipment using methods adopted in these organizations, taking into account the requirements of the instructions of Gosstandart and manufacturers.

3.114. Instruments and automation equipment accepted for installation after inspection must be prepared for delivery to the installation site. Movable systems must be locked, and connecting devices must be protected from moisture, dirt and dust.

Together with the instruments and automation equipment, special tools, accessories and fasteners included in their kit, necessary for installation, must be transferred to the installation organization.

3.115. The placement of instruments and automation equipment and their relative position must be carried out according to the working documentation. Their installation should ensure the accuracy of measurements, free access to the instruments and their locking and adjustment devices (taps, valves, switches, adjustment knobs, etc.).

3.116. In places where instruments and automation equipment are installed that are inaccessible for installation and operational maintenance, the construction of stairs, wells and platforms must be completed before the start of installation in accordance with the working documentation.

3.117. Instruments and automation equipment must be installed at the ambient temperature and relative humidity specified in the installation and operating instructions of the manufacturers.

3.118. Connection of external pipe wiring to the devices must be carried out in accordance with the requirements of GOST 25164-82 and GOST 25165-82, and electrical wiring - in accordance with the requirements of GOST 10434-82, GOST 25154-82, GOST 25705-83, GOST 19104-79 and GOST 23517-79.

3.119. Fastening of instruments and automation equipment to metal structures (boards, cabinets, stands, etc.) must be carried out using methods provided for by the design of instruments and automation equipment and the parts included in their kit.

If the set of individual instruments and automation equipment does not include fasteners, then they must be secured with standardized fasteners.

If there are vibrations in the places where devices are installed, threaded fasteners must have devices that prevent their spontaneous unscrewing (spring washers, lock nuts, cotter pins, etc.).

3.120. The openings of instruments and automation equipment intended for connecting pipe and electrical wiring must remain plugged until the wiring is connected.

3.121. The housings of instruments and automation equipment must be grounded in accordance with the requirements of the manufacturers' instructions and SNiP 3.05.06-85.

3.122. Sensitive elements of liquid thermometers, temperature alarms, pressure gauge thermometers, thermoelectric converters (thermocouples), and resistance thermal converters should, as a rule, be located in the center of the flow of the medium being measured. At a pressure above 6 MPa (60 kgf/sq.cm) and a steam flow rate of 40 m/s and water 5 m/s, the depth of immersion of the sensitive elements into the measured medium (from the inner wall of the pipeline) should be no more than 135 mm.

3.123. The working parts of surface thermoelectric (thermocouple) and resistance thermal converters must fit tightly to the controlled surface.

Before installing these devices, the place where they come into contact with pipelines and equipment must be cleared of scale and cleaned to a metallic shine.

3.124. Thermoelectric converters (thermocouples) in porcelain fittings can be immersed in a high-temperature zone for the length of the porcelain protective tube.

3.125. Thermometers with protective covers made of different metals must be immersed in the measured medium to a depth not exceeding that specified in the manufacturer’s passport.

3.126. It is not allowed to lay the capillaries of manometric thermometers on surfaces whose temperature is higher or lower than the ambient air temperature.

If it is necessary to lay capillaries in places with hot or cold surfaces, there must be air gaps between the latter and the capillary to protect the capillary from heating or cooling, or appropriate thermal insulation must be laid.

Along the entire length of the gasket, the capillaries of manometric thermometers must be protected from mechanical damage.

If the capillary is too long, it must be rolled into a coil with a diameter of at least 300 mm; the coil must be tied in three places with non-metallic dressings and securely fastened to the device.

3.127. Instruments for measuring vapor or liquid pressure should, if possible, be installed at the same level as the pressure tap; if this requirement is not feasible, the working documentation must define a permanent correction to the instrument readings.

3.128. Liquid U-shaped pressure gauges are installed strictly vertically. The fluid filling the pressure gauge must be uncontaminated and free of air bubbles.

Spring pressure gauges (vacuum gauges) must be installed in a vertical position.

3.129. Separation vessels are installed in accordance with the standards or working drawings of the project, as a rule, near the pulse collection points.

Separation vessels must be installed so that the control openings of the vessels are located at the same level and can be easily serviced by operating personnel.

3.130. For piezometric level measurement, the open end of the measuring tube must be set below the minimum level to be measured. The gas or air pressure in the measuring tube must ensure that the gas (air) passes through the tube at the maximum liquid level. The gas or air flow rate in piezometric level gauges must be adjusted to a value that ensures coverage of all losses, leaks and the required speed of the measurement system.

3.131. Installation of instruments for physical and chemical analysis and their selection devices must be carried out in strict accordance with the requirements of the instructions of the instrument manufacturers.

3.132. When installing indicating and recording instruments on the wall or on stands attached to the floor, the scale, diagram, shut-off valves, adjustment and control controls for pneumatic and other sensors should be at a height of 1-1.7 m, and the shut-off valve controls should be in one plane with the instrument scale.

3.133. Installation of aggregate and computing complexes of automated process control systems must be carried out according to the technical documentation of the manufacturers.

3.134. All instruments and automation equipment installed or built into technological devices and pipelines (restriction and sampling devices, meters, rotameters, level gauge floats, direct-acting regulators, etc.) must be installed in accordance with the working documentation and the requirements, specified in the mandatory Appendix 5.

Optical cables

3.135. Before installing an optical cable, you should check its integrity and the attenuation coefficient of the optical signal.

3.136. The laying of optical cables is carried out in accordance with the working documentation using methods similar to those adopted for laying electrical and pipe wiring, as well as communication cables.

Optical cables are not allowed to be laid in the same tray, box or pipe together with other types of automation system wiring.

Single- and dual-fiber cables must not be laid on cable shelves.

It is prohibited to use ventilation ducts, shafts and escape routes for laying optical cables.

3.137. Optical cables laid openly in places of possible mechanical influences at a height of up to 2.5 m from the floor of the room or service areas must be protected by mechanical casings, pipes or other devices in accordance with the working documentation.

3.138. When pulling an optical cable, the tensioning means should be secured to the power element, using tension limiters and anti-twist devices. Traction forces must not exceed the values ​​specified in the technical specifications for the cable.

3.139. The optical cable must be laid under climatic conditions specified in the technical specifications for the cable. Laying an optical cable at air temperatures below minus 15°C or relative humidity more than 80% is not allowed.

3.140. In places where the optical cable is connected to transceiver devices, as well as in places where couplings are installed, it is necessary to provide a supply of cable. The margin must be at least 2 m for each spliced ​​optical cable or transceiver device.

3.141. The optical cable should be mounted on supporting structures when laying vertically, as well as when laying directly along the surface of the walls of premises - along the entire length every 1 m; when laying horizontally (except for boxes) - in turning areas.

When turning, the optical cable must be fastened on both sides of the corner at a distance equal to the permissible bending radius of the cable, but not less than 100 mm, counting from the top of the corner. The turning radius of the optical cable must meet the requirements of the cable specifications.

When laying an optical cable along single supports, these supports must be installed no more than 1 m apart, and the cable must be secured to each support.

3.142. The installed optical cable should be monitored by measuring the signal attenuation in individual fibers of the optical cable and checking it for integrity. The control results are documented in a protocol for measuring the optical parameters of the mounted optical cable (see mandatory Appendix 1).

4. INDIVIDUAL TESTS

4.1. For acceptance by the working commission, automation systems are presented to the extent specified in the working documentation and have passed individual tests.

4.2. When testing individually, you should check:

a) compliance of the installed automation systems with working documentation and the requirements of these rules;

b) pipe lines for strength and density;

c) insulation resistance of electrical wiring;

d) measurements of signal attenuation in individual fibers of an installed optical cable according to special instructions.

4.3. When checking the installed systems for compliance with the working documentation, the compliance of the installation locations of instruments and automation equipment, their types and technical characteristics of the equipment specifications, compliance with the requirements of this SNiP and operational instructions for the installation methods of instruments, automation equipment, switchboards and consoles, and other means of local automated process control systems is checked, electrical and pipe wiring.

4.4. Testing of pipe wiring for strength and density, as well as checking the insulation resistance of electrical wiring is carried out in accordance with Section. 3.

4.5. After completing the individual testing, an acceptance certificate for the installed automation systems is drawn up, to which documents are attached according to items 4-12, 16, 21 of Appendix 1.

4.6. It is allowed to transfer installation work for adjustment by individual systems or individual parts of the complex (for example, control rooms and operator rooms, etc.). The delivery of installed automation systems is documented in a document (see mandatory Appendix 1).

/ SNiP 3.05.07-85 (as amended 1 1990)

Updated: 02/09/2006

BUILDING REGULATIONS

AUTOMATION

SNiP 3.05.07-85

OFFICIAL PUBLICATION

STATE COMMITTEE OF THE USSR

ON CONSTRUCTION AFFAIRS

DEVELOPED BY GPI Proektmontazhavtomatika Ministry of Montazhspecial Construction of the USSR (M. L. Vitebsky - topic leader, V. F. Valetov, R. S. Vinogradova, Y. V. Grigoriev, A. Ya. Minder, N. N. Pronin).

INTRODUCED by the USSR Ministry of Montazhspetsstroy.

PREPARED FOR APPROVAL BY Glavtekhnormirovanie Gosstroy USSR (B. A. Sokolov).

With the introduction of SNiP 3.05.07-85 “Automation systems”, SNiP III-34-74 “Automation system” is lost.

AGREED with the USSR Ministry of Health (letter dated December 24, 1984 No. 122-12/1684-4), Gosgortekhnadzor of the USSR (letter dated February 6, 1985 No. 14-16/88).

These rules and regulations apply to the production and acceptance of work on the installation and commissioning of automation systems (monitoring, management and automatic regulation) of technological processes and engineering equipment for the construction of new, expansion, reconstruction and technical re-equipment of existing enterprises, buildings and structures in sectors of the national economy.

These rules do not apply to the installation of: automation systems for special facilities (nuclear installations, mines, enterprises for the production and storage of explosives, isotopes); railway transport signaling systems; communication and alarm systems; automatic fire extinguishing and smoke removal systems; instruments using radioisotope measurement methods; devices and automation equipment built into machines, machines and other equipment supplied by manufacturers.

The rules establish requirements for the organization, production and acceptance of work on the installation of instruments, automation equipment, switchboards, consoles, aggregate and computer complexes of automated process control systems (APCS), electrical and pipe wiring, etc., as well as for the adjustment of installed automation systems.

The rules must be followed by all organizations and enterprises involved in the design, installation and commissioning of automation systems.

1. GENERAL PROVISIONS

1.1. When carrying out installation and commissioning of automation systems, the requirements of these rules, SNiP 3.01.01-85, SNiP III-3-81, SNiP III-4-80 and departmental regulatory documents approved in the manner established by SNiP 1.01.01- must be observed. 82*.

1.2. Work on the installation of automation systems must be carried out in accordance with the approved design and estimate documentation, work execution plan (WPP), as well as technical documentation of manufacturing enterprises.

1.3. Installation of instruments and automation equipment with the nodal construction method and the complete block method of installation of process equipment and pipelines, carried out in accordance with SNiP 3.05.05-84, must be carried out in the process of enlarged assembly of technological lines, assemblies and blocks.

1.4. The general contractor must involve the organization that installs automation systems in the consideration of the construction organization project (COP) in terms of performing installation work using complete block and unit methods, layout of special rooms intended for automation systems (control rooms, operator rooms, equipment rooms, sensor rooms, etc. . p.), ahead of schedule for their construction and transfer for installation.

1.5. When handing over automation systems, documentation should be drawn up in accordance with the mandatory Appendix 1 of these rules.

1.6. The end of the installation of automation systems is the completion of individual tests performed in accordance with Section. 4 of these rules, and signing an acceptance certificate for installed automation systems in the scope of working documentation.

2. PREPARATION FOR INSTALLATION WORK

GENERAL REQUIREMENTS

2.1. Installation of automation systems must be preceded by preparation in accordance with SNiP 3.01.01-85 and these rules.

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

a) conditions for equipping the facility with instruments, automation equipment, products and materials supplied by the customer, providing for their delivery to the technological unit. node, line;

b) a list of instruments, automation equipment, aggregate and computing complexes of automated process control systems, installed with the involvement of installation supervision personnel of manufacturing enterprises;

c) conditions for transporting panels, control panels, group installations of devices, pipe blocks to the installation site.

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

a) working documentation has been received;

b) a work project has been developed and approved;

c) the construction and technological readiness of the facility for installation of automation systems has been accepted;

d) acceptance of equipment (instruments, automation equipment, switchboards, consoles, aggregate and computer complexes of automated process control systems), products and materials from the customer and general contractor was carried out;

e) enlarged assembly of units and blocks was carried out;

f) the labor protection and fire safety measures provided for by the norms and regulations have been completed.

2.4. Before the installation of automation systems begins, the installation organization, together with the general contractor and the customer, must resolve the following issues:

a) advanced deadlines have been established for the construction of special premises intended for automation systems, ensuring the timely conduct of individual tests of technological lines, components and blocks put into operation;

b) technological lines, components, blocks and the timing of their transfer for individual testing after installation of automation systems are determined;

c) the necessary production workshops, household and office premises equipped with heating, lighting and telephone are provided;

d) the use of main construction machines at the disposal of the general contractor (vehicles, lifting and unloading machines and mechanisms, etc.) is provided for moving large-sized units (blocks of panels, consoles, pipes, etc.) from the production bases of installation organizations before installing them in the design position on the construction site;

f) permanent or temporary networks are provided that supply electricity, water, compressed air to the objects, with devices for connecting equipment and tools;

g) measures are provided in accordance with the project (detailed design) to ensure the protection of instruments and automation equipment, switchboards, consoles, pipes and electrical wiring from the influence of precipitation, groundwater and low temperatures, from pollution and damage, and computer equipment - and from static electricity.

2.5. In the working documentation of automation systems accepted for work, the installation organization must check the following:

a) interconnection with technological, electrical, plumbing and other working documentation;

b) references in working drawings to devices and automation equipment supplied by manufacturers complete with technological equipment;

c) taking into account the requirements for high factory and installation readiness of equipment, advanced methods of installation work, maximum transfer of labor-intensive work to assembly and procurement workshops;

e) the presence of explosive or fire hazardous areas and their boundaries, categories, groups and names of explosive mixtures; installation locations of separation seals and their types;

f) availability of documentation for the installation and testing of pipe lines for pressures above 10 MPa (100 kgf/cm2).

2.6. Acceptance of construction and technological readiness for installation of automation systems should be carried out step by step in individual completed parts of the facility (control rooms, operator rooms, technological units, units, lines, etc.).

2.7. The delivery of products and materials to the site by the organization installing automation systems should, as a rule, be carried out using containers.

ACCEPTANCE OF THE OBJECT FOR INSTALLATION

2.8. Before the installation of automation systems begins at the construction site, as well as in buildings and premises rented out for installation of automation systems, construction work must be completed as provided for in the working documentation and the work production plan.

In the building structures of buildings and structures (floors, ceilings, walls, equipment foundations), in accordance with architectural and construction drawings, there must be:

Alignment axes and working elevation marks are marked:

channels, tunnels, niches, grooves, embedded pipes for hidden wiring, openings for the passage of pipe and electrical wiring were made with the installation of boxes, sleeves, pipes, frames and other embedded structures in them;

platforms for servicing instruments and automation equipment have been installed;

Mounting openings are left for moving large-sized units and blocks.

2.9. In special rooms intended for automation systems (see clause 1.4), as well as in production premises in places intended for installation of instruments and automation equipment, construction and finishing work must be completed, formwork, scaffolding and scaffolding must be dismantled, not required for installation of automation systems, and debris was removed.

2.10. Special rooms intended for automation systems (see clause 1.4) must be equipped with heating, ventilation, lighting, and, if necessary, air conditioning, installed in a permanent manner, have glazing and door locks. The temperature in the premises must be maintained at least 5°C.

After the specified premises are handed over for installation of automation systems, construction work and installation of sanitary systems are not allowed in them.

2.11. In premises intended for the installation of technical means of aggregate and computing complexes of automated process control systems, in addition to the requirements of paragraphs. 2.9; 2.10, air conditioning systems must be installed and dust must be thoroughly removed. Painting premises with chalk whitewash is prohibited. The windows must be provided with means of protection from direct sunlight (blinds, curtains).

2.12. Before the installation of automation systems on process, sanitary and other types of equipment and pipelines begins, the following must be installed:

embedded and protective structures for installation of primary devices. Embedded structures for installing select pressure, flow and level devices must end with shut-off valves;

instruments and automation devices built into pipelines, air ducts and apparatus (restrictive devices, volume and velocity meters, rotameters, flow sensors, flow meters and concentration meters, level meters of all types, regulatory bodies, etc.).

2.13. At the site, in accordance with technological, plumbing, electrical and other working drawings, there must be:

main pipelines and distribution networks were laid with the installation of fittings for the selection of coolants to heated devices of automation systems, as well as pipelines for the removal of coolants;

equipment was installed and main and distribution networks were laid to provide devices and automation equipment with electricity and energy carriers (compressed air, gas, oil, steam, water, etc.), as well as pipelines were laid for the removal of energy carriers;

a sewer network was laid to collect wastewater from the drainage pipes of automation systems;

a grounding network has been completed;

The installation of automatic fire extinguishing systems was completed.

2.14. The grounding network for technical means of aggregate and computing complexes of automated process control systems must meet the requirements of the enterprises that manufacture these technical means.

2.15. Acceptance of the facility is formalized by an act of readiness of the facility for installation of automation systems in accordance with mandatory Appendix 1.

TRANSFER TO INSTALLATION OF EQUIPMENT, PRODUCTS,

MATERIALS AND TECHNICAL DOCUMENTATION

2.16. The transfer of equipment, products, materials and technical documentation for installation is carried out in accordance with the requirements of the “Rules on capital construction contracts” approved by the Council of Ministers of the USSR and the “Regulations on the relationship of organizations - general contractors with subcontractors” approved by the USSR State Construction Committee and the USSR State Planning Committee .

2.17. Accepted equipment, materials and products must comply with working documentation, state standards, technical specifications and have appropriate certificates, technical passports or other documents certifying their quality. Pipes, fittings and connections for oxygen piping must be degreased, which must be indicated in the documentation confirming this operation.

Upon acceptance of equipment, materials and products, completeness, absence of damage and defects, integrity of paint and special coatings, integrity of seals, availability of special tools and devices supplied by manufacturers are checked.

Parts of pipe lines for pressures above 10 MPa (100 kgf/cm2) are submitted for installation in the form of products prepared for installation (pipes, fittings for them, connecting parts, hardware, fittings, etc.) or assembled into assembly units, complete according to the specifications of the detail drawings. Pipe openings must be closed with plugs. Products and assembly units with welded seams must be provided with certificates or other documents confirming the quality of welded joints in accordance with SNiP 3.05.05-84.

Elimination of equipment defects discovered during the acceptance process is carried out in accordance with the “Rules on capital construction contracts”.

3. INSTALLATION WORK

GENERAL REQUIREMENTS

3.1. Installation of automation systems must be carried out in accordance with the working documentation, taking into account the requirements of manufacturers of devices, automation equipment, aggregate and computing systems, provided for by the technical specifications or operating instructions for this equipment.

Installation work should be carried out using an industrial method using small-scale mechanization, mechanized and electrified tools and devices that reduce the use of manual labor.

3.2. Work on installation of automation systems should be carried out in two stages:

At the first stage, the following should be carried out: preparation of mounting structures, assemblies and blocks, electrical wiring elements and their enlarged assembly outside the installation area; checking the presence of embedded structures, openings, holes in building structures and building elements, embedded structures and selecting devices on process equipment and pipelines, the presence of a grounding network; laying in the foundations, walls, floors and ceilings of pipes and blind boxes for hidden wiring; marking routes and installing supporting and load-bearing structures for electrical and pipe wiring, actuators, and instruments.

At the second stage, it is necessary to carry out: laying pipe and electrical wiring along the installed structures, installing switchboards, cabinets, consoles, instruments and automation equipment, connecting pipe and electrical wiring to them, and individual testing.

3.3. Mounted instruments and automation equipment of the electrical branch of the State Instrumentation System (GSP), panels and consoles, structures, electrical and pipe wiring, subject to grounding in accordance with the working documentation, must be connected to the grounding loop. If there are requirements from manufacturers, the means of aggregate and computing complexes must be connected to a special grounding circuit.

INSTALLATION OF STRUCTURES

3.4. Marking of installation sites for structures for instruments and automation equipment should be carried out in accordance with the working documentation.

When marking, the following requirements must be taken into account:

when installing structures, hidden wiring, strength and fire resistance of building structures (foundations) must not be damaged;

The possibility of mechanical damage to mounted devices and automation equipment must be excluded.

3.5. The distance between supporting structures on horizontal and vertical sections of the route for laying pipe and electrical wiring, as well as pneumatic cables, must be taken according to the working documentation.

3.6. Supporting structures must be parallel to each other, as well as parallel or perpendicular (depending on the type of structure) to building structures (foundations).

3.7. Structures for wall-mounted appliances must be perpendicular to the walls. Racks installed on the floor must be plumb or level. When installing two or more racks side by side, they must be fastened together with detachable connections.

3.8. The installation of boxes and trays should be carried out in large blocks assembled in assembly and procurement workshops.

3.9. Fastening boxes and trays to supporting structures and connecting them to each other must be bolted or welded.

When using a bolted connection, the tight connection of the boxes and trays with each other and with the supporting structures must be ensured, as well as the reliability of the electrical contact must be ensured.

When connecting by welding, burning through boxes and trays is not allowed.

3.10. The location of the boxes after their installation should eliminate the possibility of moisture accumulation in them.

3.11. At the intersection of settlement and expansion joints of buildings and structures, as well as in external installations, boxes and trays must have compensating devices.

3.12. All structures must be painted according to the instructions given in the working documentation.

3.13. Passages of pipe and electrical wiring through walls (external or internal) and ceilings must be carried out in accordance with the working documentation.

PIPE LINES

3.14. These rules apply to the installation and testing of pipe wiring of automation systems (pulse, command, supply, heating, cooling, auxiliary and drainage according to the recommended Appendix 3), operating at an absolute pressure from 0.001 MPa (0.01 kgf/cm2) to 100 MPa ( 1000 kgf/cm2).

The rules do not apply to the installation of pipe wiring inside switchboards and control panels.

3.15. Installation and testing of pipe wiring of automation systems must meet the requirements of SNiP 3.05.05-84 and this SNiP.

3.16. The equipment, fixtures, fixtures, and work methods used during the installation of pipe wiring must ensure the possibility of installing the following pipes and pneumatic cables:

steel water and gas pipes according to GOST 3262-75, ordinary and light with nominal bore 8; 15; 20; 25; 40 and 50 mm;

cold-deformed seamless steel according to GOST 8734-75 with an outer diameter of 8; 10; 14; 16 and 22 mm with a wall thickness of at least 1 mm;

seamless cold- and heat-deformed from corrosion-resistant steel according to GOST 9941-81 with an outer diameter of 6; 8; 10; 14; 16 and 22 mm with a wall thickness of at least 1 mm. For pipe lines with pressure over 10 MPa (100 kgf/cm2), pipes with an outer diameter of 15; 25 and 35 mm;

copper according to GOST 617-72 with an outer diameter of 6 and 8 mm with a wall thickness of at least 1 mm;

made of aluminum and aluminum alloys in accordance with GOST 18475-82 with an outer diameter of 6 and 8 mm with a wall thickness of at least 1 mm;

from low-density polyethylene (high pressure) according to the technical specifications of the manufacturing enterprises with an outer diameter of 6 mm with a wall thickness of 1 mm and an outer diameter of 8 mm with a wall thickness of 1 and 1.6 mm;

pressure ones made of polyethylene according to GOST 18599-83, heavy with an outer diameter of 12; 20 and 25 mm;

polyvinyl chloride flexible according to the technical specifications of manufacturing enterprises with an internal diameter of 4 and 6 mm with a wall thickness of at least 1 mm;

rubber according to GOST 5496-78 with an internal diameter of 8 mm and a wall thickness of 1.25 mm;

pneumatic and pneumoelectric with polyethylene tubes (pneumatic cables) according to the technical specifications of the manufacturers (polyethylene tubes must have dimensions 6X1; 8X1 and 8X1.6 mm).

The choice of a specific range of pipes depending on the properties of the transported medium, the magnitude of the parameters being measured, the types of transmitted signals and the distances between the connected devices must be carried out in accordance with the working documentation.

3.17. Pipe wiring should be laid along the shortest distances between connected devices, parallel to walls, ceilings and columns, as far as possible from technological units and electrical equipment, with a minimum number of turns and intersections, in places accessible for installation and maintenance, without sharp fluctuations in ambient temperature, not subject to extreme heat or cold, shock and vibration.

3.18. Pipe lines for all purposes should be laid at a distance that ensures ease of installation and operation.

In dusty rooms, pipe lines should be laid in one layer at distances from walls and ceilings that allow mechanical dust cleaning.

3.19. The total width of a group of horizontal and vertical pipe wiring fixed to one structure should be no more than 600 mm when servicing the wiring on one side and 1200 mm on both sides.

3.20. All pipe lines filled with a medium with a temperature above 60 ° C, laid at a height of less than 2.5 m from the floor, must be fenced.

3.21. Pipe lines, with the exception of those filled with dry gas or air, must be laid with a slope that ensures condensate drainage and gas (air) removal, and have devices for their removal.

The direction and magnitude of the slopes must correspond to those specified in the working documentation, and in the absence of such instructions, the wiring must be laid with the following minimum slopes: pulse (see recommended Appendix 3) to pressure gauges for all static pressures, membrane or pipe draft gauges, gas analyzers - 1:50; pulse to steam, liquid, air and gas flow meters, level regulators, drain gravity oil lines of hydraulic jet regulators and drain lines (see recommended Appendix 3) -1:10.

The slopes of heating pipes (see recommended Appendix 3) must comply with the requirements for heating systems. Pipe lines requiring different slopes, fixed to common structures, should be laid along the greatest slope.

3.22. The working documentation must provide for measures to ensure compensation for thermal elongations of pipe lines. For cases where the working documentation provides for self-compensation of temperature elongations of pipe lines at turns and bends, it must indicate at what distances from the turn (bend) the pipes should be secured.

3.23. Metal pipe lines at the points of transition through expansion joints of buildings must have U-shaped expansion joints. The installation locations of compensators and their number must be indicated in the working documentation.

3.24. On pipe lines laid with a slope, U-shaped expansion joints, cleats and similar devices should be placed so that they are the highest or lowest point of the pipe line and eliminate the possibility of accumulation of air (gas) or condensate in them.

3.25. The minimum height for laying external pipe lines should be (in the clear): in the impassable part of the territory, in places where people pass - 2.2 m; at intersections with highways - 5 m.

3.26. Installation of pipe wiring must ensure: the strength and density of the wiring, connecting pipes to each other and connecting them to fittings, instruments and automation equipment; reliability of fixing pipes to structures.

3.27. Pipe lines must be secured to supporting and load-bearing structures using standardized fasteners; Fastening pipe lines by welding is prohibited. Fastening must be done without compromising the integrity of the pipes.

3.28. It is not permitted to attach pipe lines to the outside of switchboards, instrument housings and automation equipment.

It is allowed to secure pipe lines to disassembled process equipment near sampling devices, but not more than at two points.

Fastening pipe lines to non-disassembled process equipment is permitted by agreement with the customer. Pipe lines at the points of access to the equipment must have detachable connections.

3.29. Pipe lines must be secured:

at distances of no more than 200 mm from the branch parts (on each side);

on both sides of turns (pipe bends) at distances that ensure self-compensation of thermal elongations of pipe lines;

on both sides of the fittings of settling and other vessels, if the fittings and vessels are not secured; if the length of the connecting line on any side of the vessel is less than 250 mm, the pipe is not attached to the supporting structure;

on both sides of U-shaped expansion joints at a distance of 250 mm from their bend when installing expansion joints in places where pipe lines pass through expansion joints in the walls.

3.30. Changing the direction of pipe lines, as a rule, must be done by bending the pipes accordingly. It is allowed to use standardized or normalized bent elements to change the direction of the pipe route.

3.31. Pipe bending methods are selected by the installation organization.

Curved pipes must meet the following basic requirements:

a) there should be no folds, cracks, creases, etc. on the curved part of the pipes;

b) the ovality of the pipe cross-section at bending points is allowed no more than 10%.

3.32. The minimum radius of the internal pipe bend curve must be:

for cold-bent polyethylene pipes:

PNP - not less than 6D n , where Dн - outside diameter; PVP - not less than 10Dn;

for polyethylene pipes bent in a hot state - not less than 3Dn;

for polyvinyl chloride plasticized pipes (flexible), bent in a cold state - not less than 3 Dн ;

for pneumatic cables - at least 10Dn.

for steel pipes bent in a cold state - not less than 4Dn, and for steel pipes bent in a hot state - not less than 3Dn;

for annealed copper pipes bent in a cold state - not less than 2Dn;

for annealed pipes made of aluminum and aluminum alloys when bending them in a cold state - at least 3Dn.

3.33. Pipe connections during installation may be made using both permanent and detachable connections. When connecting pipe lines, it is prohibited to eliminate gaps and misalignment of pipes by heating, tensioning or bending the pipes.

3.34. The connection of pipe lines to embedded structures (see recommended Appendix 3) of process equipment and pipelines, to all instruments, automation equipment, switchboards and consoles must be made using detachable connections.

3.35. For detachable connections and pipe connections, normalized threaded connections must be used. In this case, for pipes made of stainless steel, aluminum and aluminum alloys, connecting parts specially designed for these pipes must be used.

3.36. It is prohibited to place pipe connections of any type: on expansion joints; on curved areas; in places of fastening on supporting and load-bearing structures; in passages through walls and ceilings of buildings and structures; in places inaccessible for maintenance during operation.

3.37. Pipe connections should be located at a distance of at least 200 mm from the fastening points.

3.38. When connecting pipes in group pipe lines, the connections must be offset to ensure that the tool can be used when installing or dismantling pipe lines.

When laying in blocks in groups, the distances between detachable connections must be indicated in the working documentation, taking into account the block installation technology.

3.39. Rubber pipes or pipes made of other elastic material connecting pipe lines with instruments and automation equipment must be worn over the entire length of the connecting tips; pipes must be laid without kinks, freely.

3.40. Fittings (valves, taps, gearboxes, etc.) installed on pipe lines made of copper, aluminum and plastic pipes must be rigidly fixed to structures.

3.41. All pipework must be marked. The markings applied to the tags must correspond to the markings of the pipe lines given in the working documentation.

3.42. Application of protective coatings should be carried out on a well-cleaned and degreased surface of the pipes. The color of the pipe lines must be specified in the working documentation.

Steel pipes intended to protect pipe lines must be painted on the outside. Plastic pipes cannot be painted. Pipes made of non-ferrous metals are painted only in cases specified in the working documentation.

3.43. When installing plastic pipes and pneumatic cables, it is necessary to use a minimum number of connections, using the maximum length of the pipes and pneumatic cable.

3.44. Plastic pipes and pneumatic cables should be laid over fireproof structures and laid freely on them, without tension, taking into account changes in length due to temperature differences.

In places of contact with sharp edges of metal structures and fasteners, unarmored cables and plastic pipes must be protected with gaskets (rubber, polyvinyl chloride) protruding 5 mm on both sides of the edges of the supports and fastening brackets.

Fastening parts must be installed so as not to deform the cross-section of plastic pipes and pneumatic cables.

3.45. Compensation for temperature changes in the length of plastic pipe lines must be ensured through the rational arrangement of movable (free) and fixed (rigid) fasteners and curved elements of the pipe line itself (bends, ducks, “snake” gasket).

3.46. The placement of fixed fasteners that do not allow the movement of wiring in the axial direction should be done in such a way as to divide the route into sections, the temperature deformation of which occurs independently of one another and is self-compensating.

The fastenings should be fixed at junction boxes, cabinets, panels, etc., as well as in the middle of the areas between two turns.

In all other cases where movement of pipes and pneumatic cables in the axial direction is allowed, movable fasteners should be used.

3.47. Fastening plastic pipes and pneumatic cables at turns is not allowed.

The apex of the turn when laying horizontally must lie on a flat, solid support. At a distance of 0.5-0.7 m from the top of the turn, plastic pipes and pneumatic cables must be secured with movable fasteners.

3.48. Installation of plastic pipe lines must be done without damaging the pipes (cuts, deep scratches, dents, melting, burns, etc.). Damaged sections of pipes must be replaced.

3.49. Plastic pipes and pneumatic cables laid openly in places of possible mechanical influences at a height of up to 2.5 m from the floor must be protected from damage by metal casings, pipes or other devices. The design of protective devices must allow their free dismantling and maintenance of pipe lines.

Sections of pipes up to 1 m long for instruments, actuators and automation equipment installed on process pipelines and apparatus may not be protected.

3.50. External pipe wiring made of plastic pipes must be protected from direct sunlight.

3.51. Plastic pipes and pneumatic cables in boxes and trays laid horizontally must be laid freely without fastenings. When laid in boxes and trays laid vertically, pipes and cables must be secured at intervals of no more than 1 m.

In places where the route turns or branches, for all cases of laying trays, pneumatic cables must be secured in accordance with clause 3.47 of these rules.

When laying plastic pipes and pneumatic cables, fireproof partitions with a fire resistance limit of at least 0.75 hours every 50 m must be installed in boxes.

Armored pneumatic cables are usually not allowed to be laid in boxes.

Pipes and cables are removed from the box through holes in its wall or bottom. Plastic bushings must be installed in the holes.

3.52. The distances between the places of fastening of plastic pipes or bundles of them should be no more than those indicated in the table. 1.

3.53. Pipe lines made of plastic pipes through which liquids or moist gases are transported, as well as plastic pipes at an ambient or filling temperature of 40 ° C and above, must be laid in horizontal sections on solid supporting structures, and in vertical sections the distance between fasteners must be reduced twice as compared to that indicated in the table. 1.

Table 1

3.54. When connecting to devices, equipment and bulkhead connections (taking into account the permissible bending radii), plastic pipes must have a reserve of at least 50 mm in case of possible damage during repeated re-installation of connections.

3.55. When laying pneumatic cables on cable structures, the following conditions must be met:

pneumatic cables must be laid in one layer;

the sag should be formed only under the influence of the pneumatic cable’s own weight and should not exceed 1% of the span length.

Fastening for horizontal installation should be carried out through one support.

3.56. When installing metal pipe lines, it is allowed to use any welding methods that ensure high-quality connections, if the type or method of welding is not specified in the working documentation.

3.57. Welding of steel pipelines and quality control of welded joints should be carried out in accordance with SNiP 3.05.05-84.

3.58. The method and technological regime for welding pipes, materials for welding and the welding control procedure must be adopted in accordance with the standard technological process for welding OST 36-57-81 and OST 36-39–80, approved by the USSR Ministry of Montazhspetsstroy. The types and structural elements of welds must comply with GOST 16037-80.

3.59. Permanent connection of copper pipes must be carried out by soldering in accordance with GOST 19249-73.

Quality control of solder joints should be carried out by external inspection, as well as hydraulic or pneumatic testing.

In appearance, solder seams should have a smooth surface. Sagging, caps, shells, foreign inclusions and non-drinking are not allowed.

3.60. Single metal pipe runs must be secured to each support.

ADDITIONAL INSTALLATION REQUIREMENTS

OXYGEN TUBING

3.61. Work on the installation of oxygen piping must be carried out by personnel who have studied the special requirements for performing this work.

3.62. During the installation and welding of the pipeline, contamination of its internal surface with fats and oils must be prevented.

3.63. If it is necessary to degrease pipes, fittings and connections, it must be carried out using the technology provided for in OST 26-04-312-83 (approved by the Ministry of Chemical Engineering), fireproof solvents and detergents dissolved in water.

Pipes, fittings and connections intended for pipe lines filled with oxygen must be provided with a document indicating that they have been degreased and are suitable for installation.

3.64. For threaded connections, it is prohibited to wind flax, hemp, or coat them with red lead and other materials containing oils and fats.

ADDITIONAL REQUIREMENTS FOR INSTALLATION OF PIPE LINES FOR PRESSURES OVER 10 MPa (100 kgf/cm2)

3.65. Before the start of work on the installation of pipe lines over 10 MPa (100 kgf/cm2), responsible persons are appointed from among the engineering and technical workers who are entrusted with the management and quality control of the work on the installation of pipe lines and documentation.

Designated engineering and technical personnel must be certified after special training.

3.66. All elements of pipe lines for pressures above 10 MPa (100 kgf/cm2) and welding materials arriving at the warehouse of the installation organization are subject to external inspection. At the same time, the availability and quality of the relevant documentation is also checked and an acceptance certificate for pipes, fittings, pipeline parts, etc. is drawn up.

3.67. When installing and setting up pipe lines of automation systems filled with flammable and toxic liquids and gases, as well as pipe lines with Рy

TESTING OF PIPE LINES

3.68. Fully assembled pipe lines must be tested for strength and density in accordance with SNiP 3.05.05-84.

The type (strength, density), method (hydraulic, pneumatic), duration and assessment of test results must be taken in accordance with the working documentation.

3.69. The value of test pressure (hydraulic and pneumatic) for strength and density in pipe lines (impulse, drainage, supply, heating, cooling, auxiliary and command systems of hydraulic automation) in the absence of instructions in the working documentation should be taken in accordance with SNiP 3.05.05-84.

3.70. Command pipe lines filled with air at operating pressure RR

3.71. Pressure gauges used for testing must have:

accuracy class not lower than 1.5;

case diameter not less than 160 mm;

measurement limits equal to 4/3 of the measured pressure.

3.72. Tests of plastic pipe lines and pneumatic cables must be carried out at a temperature of the test environment not exceeding 30

3.73. Testing of plastic pipe lines is permitted no earlier than 2 hours after the last welding of the pipes.

3.74. Before testing for strength and density, all pipework, regardless of purpose, must be subjected to:

a) external inspection in order to detect installation defects, compliance with their working documentation and readiness for testing;

b) purging, and when indicated in the working documentation - flushing.

3.75. Pipe lines must be purged with compressed air or inert gas, dried and free of oil and dust.

Pipe lines for steam and water can be purged and washed with a working medium.

3.76. Pipe lines must be purged with a pressure equal to the working pressure, but not more than 0.6 MPa (6 kgf/cm2).

If it is necessary to purge at a pressure of more than 0.6 MPa (6 kgf/cm2), purge should be carried out in accordance with the instructions given in special diagrams for purging process pipelines, agreed with the customer.

Blowing should be done for 10 minutes until clean air appears.

Purge of pipe lines operating at excess pressure up to 0.1 MPa (1 kgf/cm2) or absolute pressure up to 0.001 to 0.095 MPa (from 0.01 to 0.95 kgf/cm2) should be carried out with air at a pressure of no more than 0.1 MPa (1 kgf/cm2).

3.77. Washing of pipe lines should be carried out until clear water appears steadily from the outlet pipe or drainage device of the pipe lines being washed.

At the end of flushing, the pipe lines must be completely freed of water and, if necessary, purged with compressed air.

3.78. After purging and flushing, the pipe lines must be plugged.

The design of the plugs must exclude the possibility of their failure at test pressures.

For pipe lines intended to operate at RR

3.79. Pipelines supplying test liquid, air or inert gases from pumps, compressors, cylinders, etc. to pipe lines must be pre-tested with hydraulic pressure in assembled form with shut-off valves and pressure gauges.

3.80. For hydraulic tests, water should be used as the test fluid. The water temperature during testing must be no lower than 5

3.81. For pneumatic tests, air or inert gas shall be used as the test medium. Air and inert gases must be free from moisture, oil and dust.

3.82. For hydraulic and pneumatic testing, the following stages of pressure increase are recommended:

The pressure at stages 1 and 2 is maintained for 1-3 minutes; During this time, according to the readings of the pressure gauge, there is no pressure drop in the pipework.

Test pressure (3rd stage) is maintained for 5 minutes.

On pipelines with pressure Рр

Raising the pressure to the 3rd stage is a test of strength.

Operating pressure (4th stage) is maintained for the time necessary for final inspection and identification of defects. Stage 4 pressure is a density test.

3.83. Defects are eliminated after reducing the pressure in the pipework to atmospheric pressure.

After eliminating the defects, the test is repeated.

3.84. Pipe lines are considered suitable for service if during the strength test there is no pressure drop on the pressure gauge and during a subsequent tightness test no leaks are found in the welds and connections.

Upon completion of the tests, a report must be drawn up.

3.85. Pipe lines filled with flammable, toxic and liquefied gases (except for gas pipelines with a pressure of up to 0.1 MPa (1 kgf/cm2), pipe lines filled with oxygen, as well as pipe lines for pressures above 10 MPa (100 kgf/cm2), on absolute pressure from 0.001 to 0.095 MPa (from 0.01 to 0.95 kgf/cm2) must be subject to additional density tests with determination of pressure drop.

3.86. Before testing the pipe lines for tightness and determining the pressure drop, the pipe lines must be washed or purged.

3.87. For pipe lines at pressure 10

3.88. A density test with determination of pressure drop is carried out with air or an inert gas at a test pressure equal to the working pressure (Ppr = Pp ) , except for pipelines for absolute pressure from 0.001 to 0.095 MPa (from 0.01 to 0.95 kgf/cm2), which must be tested at the following pressure:

a) pipelines filled with flammable, toxic and liquefied gases - 0.1 MPa (1 kgf/cm2);

b) pipelines filled with ordinary media - 0.2 MPa (2 kgf/cm2).

3.89. The duration of additional testing for density and holding time under test pressure is established in the working documentation, but must be no less for pipelines:

for pressure from 10 to 100 MPa (from 100 to 1000 kgf/cm2) - 24 hours;

for flammable, toxic and liquefied gases - 24,;

filled with oxygen - 12,;

for absolute pressure from 0.001 to 0.095 MPa -12;

(from 0.01 to 0.95 kgf/cm2)

3.90. Pipe lines are considered to have passed the test if the pressure drop in them does not exceed the values ​​​​indicated in the table. 2.

table 2

The specified standards apply to pipe lines with a nominal bore of 50 mm. When testing pipe lines with other nominal diameters, the rate of pressure drop in them is determined by the product of the above pressure drop values ​​​​by the coefficient calculated by the formula

K= ---------

Where Dy- nominal diameter of the tested pipe wiring, mm.

3.91. Upon completion of tests of pipe lines for density with determination of the pressure drop during the tests, a report must be drawn up.

3.92. When conducting pneumatic tests, the safety requirements set out in SNiP III-4-80 and “Rules for the construction and safe operation of pipelines for flammable, toxic and liquefied gases” (PUG-69) must be observed.

ELECTRICAL WIRING

3.93. Installation of electrical wiring of automation systems (measurement, control, power, alarm circuits, etc.) with wires and control cables in boxes and trays, in plastic and steel protective pipes, on cable structures, in cable structures and in the ground; installation of electrical wiring in explosion and fire hazardous areas, installation of grounding (grounding) must meet the requirements of SNiP 3.05.06-85, taking into account the specific features of the installation of automation systems set out in the manuals for the specified SNiP.

3.94. Connection of single-wire copper conductors of wires and cables with a cross-section of 0.5 and 0.75 mm2 and stranded copper conductors with a cross-section of 0.35; 0.5; 0.75 mm2 to devices, apparatus, and terminal assemblies should, as a rule, be performed by soldering if the design of their terminals allows this to be done (permanent contact connection).

If it is necessary to connect single-wire and multi-wire copper conductors of the specified sections to devices, devices and clamp assemblies that have leads and clamps for connecting conductors with a screw or bolt (dismountable contact connection), the conductors of these wires and cables must be terminated with lugs.

Single-wire copper conductors of wires and cables with a cross-section of 1; 1.5; 2.5; 4 mm2 should, as a rule, be connected directly under the screw or bolt, and stranded wires of the same sections - using lugs or directly under the screw or bolt. In this case, the cores of single-wire and multi-wire wires and cables, depending on the design of the terminals and clamps of devices, devices and clamp assemblies, are terminated with a ring or pin; the ends of stranded wires (rings, pins) must be soldered, the pin ends can be pressed with pin tips.

If the design of the terminals and clamps of devices, devices, and clamp assemblies requires or allows other methods of connecting single-wire and multi-wire copper cores of wires and cables, the connection methods specified in the relevant standards and technical specifications for these products must be used.

The connection of aluminum conductors of wires and cables with a cross-section of 2.0 mm2 or more to devices, apparatus, and clamp assemblies should be carried out only with clamps that allow direct connection of aluminum conductors of the appropriate cross-sections to them.

The connection of single-wire conductors of wires and cables (by screw or soldering) is allowed only to fixed elements of devices and devices.

The connection of wire and cable cores to devices, devices and automation equipment that have output devices in the form of plug connectors must be carried out using stranded (flexible) copper wires or cables laid from clamp assemblies or junction boxes to devices and automation equipment.

Separable and non-separable connections of copper, aluminum and aluminium-copper conductors of wires and cables with terminals and clamps of devices, devices, clamp assemblies must be made in accordance with the requirements of GOST 10434-82, GOST 25154-82, GOST 25705-83, GOST 19104-79 and GOST 23517-79.

3.95. The connection of steel protective pipes to each other, to duct boxes, etc. in premises of all classes should be carried out using standard threaded connections.

In rooms of all classes, except for explosion and fire hazardous areas, it is allowed to connect thin-walled steel protective pipes with sheet steel sleeves or steel pipes of larger diameter, followed by welding along the entire perimeter of the joints: in this case, burning through the pipes is not allowed.

3.96. The installed electrical wiring of automation systems must be subjected to an external inspection, which establishes compliance of the mounted wiring with the working documentation and the requirements of these rules. Electrical wiring that meets the specified requirements is subject to testing for insulation resistance.

3.97. Measuring the insulation resistance of electrical wiring of automation systems (measurement, control, power, alarm circuits, etc.) is carried out with a megger for a voltage of 500-1000 V. The insulation resistance should not be less than 0.5 MOhm.

When measuring insulation resistance, wires and cables must be connected to the terminal assemblies of panels, cabinets, consoles and junction boxes.

Devices, apparatus and wiring that do not allow testing with a megger with a voltage of 500-1000 V must be turned off for the duration of the test.

Based on the results of measuring the insulation resistance, a report is drawn up.

SHIELDS, CABINETS AND CONSOLES

3.98. Boards, cabinets and consoles must be transferred by the customer in a complete form for installation with equipment, fittings and installation products, with electrical and pipe internal wiring prepared for connecting external electrical and pipe wiring and devices, as well as with fasteners for the assembly and installation of switchboards, cabinets and consoles on site.

3.99. Separate boards, consoles and cabinets must be assembled into composite boards (operator rooms, control rooms) of any configuration using detachable connections.

Fastening threaded connections must be tightly and evenly tightened and protected from self-unscrewing.

3.100. Panels, cabinets and consoles must be installed on embedded structures. The exceptions are small-sized panels placed on walls and columns, and flat cabinets that do not require preliminary installation of embedded structures for installation.

The main method of fastening the supporting frames of shields to embedded structures is one-piece, carried out by welding.

During installation, panels, cabinets and consoles must be plumb and then secured.

Installation of auxiliary elements (decorative panels, mnemonic diagrams, etc.) must be carried out while maintaining the axial lines and verticality of the entire frontal plane of the shield. The angle of inclination of the mnemonic diagram specified in the working documentation must be maintained within the tolerances specified therein.

3.101. Inputs of electrical and pipe wiring into switchboards, cabinets and consoles must be carried out in accordance with OST 36.13-76, approved by the USSR Ministry of Montazhspetsstroy.

3.102. In order to increase the level of industrialization of installation work, it is necessary, as a rule, to use industrial automation premises, including complete operator rooms (COP) and complete sensor points (SPS). Industrial automation rooms must be delivered to the site with mounted panels, cabinets, consoles, pipes and electrical wiring. Only work on connecting external pipes and electrical wiring should be carried out at the site.

3.103. End seals and connections of pipe and electrical wiring inserted into switchboards, cabinets, consoles, KOP and KPD must be carried out in accordance with the requirements of SNiP 3.05.06-85 and these rules.

DEVICES AND AUTOMATION MEANS

3.104. Installation must include devices and automation equipment that have been tested and the corresponding protocols have been drawn up.

In order to ensure the safety of instruments and equipment from breakdown, dismantling and theft, their installation must be carried out after the written permission of the general contractor (customer).

3.105. Testing of instruments and automation equipment is carried out by the customer or specialized organizations engaged by him, who carry out work on setting up instruments and automation equipment using methods adopted in these organizations, taking into account the requirements of the instructions of Gosstandart and manufacturers.

3.106. Instruments and automation equipment accepted for installation after inspection must be prepared for delivery to the installation site. Movable systems must be locked, and connecting devices must be protected from moisture, dirt and dust.

Together with the instruments and automation equipment, special tools, accessories and fasteners included in their kit, necessary for installation, must be transferred to the installation organization.

3.107. The placement of instruments and automation equipment and their relative position must be carried out according to the working documentation. Their installation should ensure the accuracy of measurements, free access to the instruments and their locking and adjustment devices (taps, valves, switches, adjustment knobs, etc.).

3.108. In places where instruments and automation equipment are installed that are inaccessible for installation and operational maintenance, the construction of stairs, wells and platforms must be completed before the start of installation in accordance with the working documentation.

3.109. Instruments and automation equipment must be installed at the ambient temperature and relative humidity specified in the installation and operating instructions of the manufacturers.

3.110. Connection of external pipe wiring to the devices must be carried out in accordance with the requirements of GOST 25164-82 and GOST 025165-82, and electrical wiring - in accordance with the requirements of GOST 10434-82, GOST 25154-82, GOST 25705-83, GOST 19104-79 and GOST 23517-79.

3.111. Fastening of instruments and automation equipment to metal structures (boards, cabinets, stands, etc.) must be carried out using methods provided for by the design of instruments and automation equipment and the parts included in their kit.

If the set of individual instruments and automation equipment does not include fasteners, then they must be secured with standardized fasteners.

If there are vibrations in the places where devices are installed, threaded fasteners must have devices that prevent their spontaneous unscrewing (spring washers, lock nuts, cotter pins, etc.).

3.112. The openings of instruments and automation equipment intended for connecting pipe and electrical wiring must remain plugged until the wiring is connected.

3.113. The housings of instruments and automation equipment must be grounded in accordance with the requirements of the manufacturers' instructions and SNiP 3.05.06-85.

3.114. Sensitive elements of liquid thermometers, temperature alarms, pressure gauge thermometers, thermoelectric converters (thermocouples), and resistance thermal converters should, as a rule, be located in the center of the flow of the medium being measured. At a pressure above 6 MPa (60 kgf/cm2) and a steam flow rate of 40 m/s and water 5 m/s, the depth of immersion of the sensitive elements into the measured medium (from the inner wall of the pipeline) should be no more than 135 mm.

3.115. The working parts of surface thermoelectric (thermocouple) and resistance thermal converters must fit tightly to the controlled surface.

Before installing these devices, the place where they come into contact with pipelines and equipment must be cleared of scale and cleaned to a metallic shine.

3.116. Thermoelectric converters (thermocouples) in porcelain fittings can be immersed in a high-temperature zone for the length of the porcelain protective tube.

3.117. Thermometers with protective covers made of different metals must be immersed in the measured medium to a depth not exceeding that specified in the manufacturer’s passport.

3.118. It is not allowed to lay the capillaries of manometric thermometers on surfaces whose temperature is higher or lower than the ambient air temperature.

If it is necessary to lay capillaries in places with hot or cold surfaces, there must be air gaps between the latter and the capillary to protect the capillary from heating or cooling, or appropriate thermal insulation must be laid.

Along the entire length of the gasket, the capillaries of manometric thermometers must be protected from mechanical damage.

If the capillary is too long, it must be rolled into a coil with a diameter of at least 300 mm; the coil must be tied in three places with non-metallic dressings and securely fastened to the device.

3.119. Instruments for measuring vapor or liquid pressure should, if possible, be installed at the same level as the pressure tap; if this requirement is not feasible, the working documentation must define a permanent correction to the instrument readings.

3.120. Liquid U-shaped pressure gauges are installed strictly vertically. The fluid filling the pressure gauge must be uncontaminated and free of air bubbles.

Spring pressure gauges (vacuum gauges) must be installed in a vertical position.

3.121. Separation vessels are installed in accordance with the standards or working drawings of the project, as a rule, near the pulse collection points.

Separation vessels must be installed so that the control openings of the vessels are located at the same level and can be easily serviced by operating personnel.

3.122. For piezometric level measurement, the open end of the measuring tube must be set below the minimum level to be measured. The gas or air pressure in the measuring tube must ensure that the gas (air) passes through the tube at the maximum liquid level. The gas or air flow rate in piezometric level gauges must be adjusted to a value that ensures coverage of all losses, leaks and the required speed of the measurement system.

3.123. Installation of instruments for physical and chemical analysis and their selection devices must be carried out in strict accordance with the requirements of the instructions of the instrument manufacturers.

3.124. When installing indicating and recording instruments on the wall or on stands attached to the floor, the scale, diagram, shut-off valves, adjustment and control controls for pneumatic and other sensors should be at a height of 1-1.7 m, and the shut-off valve controls should be in one plane with the instrument scale.

3.125. Installation of aggregate and computing complexes of automated process control systems must be carried out according to the technical documentation of the manufacturers.

3.126. All instruments and automation equipment installed or built into technological devices and pipelines (restriction and sampling devices, meters, rotameters, level gauge floats, direct-acting regulators, etc.) must be installed in accordance with the working documentation and the requirements, specified in the mandatory Appendix 5.

OPTICAL CABLES

3.127. Before installing an optical cable, you should check its integrity and the attenuation coefficient of the optical signal.

3.128. The laying of optical cables is carried out in accordance with the working documentation using methods similar to those adopted for laying electrical and pipe wiring, as well as communication cables.

3.129. Optical cables laid openly in places of possible mechanical influences at a height of up to 2.5 m from the floor of the room or service areas must be protected by mechanical casings, pipes or other devices in accordance with the working documentation.

3.130. When pulling an optical cable, the tensioning means should be secured to the power element, using tension limiters and anti-twist devices. Traction forces must not exceed the values ​​specified in the technical specifications for the cable.

3.131. The optical cable must be laid under climatic conditions specified in the technical specifications for the cable. Laying an optical cable at air temperatures below minus 15°C or relative humidity more than 80% is not allowed.

3.132. In places where the optical cable is connected to transceiver devices, as well as in places where couplings are installed, it is necessary to provide a supply of cable. The margin must be at least 2 m for each spliced ​​optical cable or transceiver device.

3.133. The optical cable should be mounted on supporting structures when laying vertically, as well as when laying directly along the surface of the walls of premises - along the entire length every 1 m; when laying horizontally (except for boxes) - in turning areas.

3.134. The installed optical cable should be monitored by measuring the signal attenuation in individual fibers of the optical cable and checking it for integrity. The control results are documented in a protocol for measuring the optical parameters of the mounted optical cable (see mandatory Appendix 1).

4. INDIVIDUAL TESTS

4.1. For acceptance by the working commission, automation systems are presented to the extent specified in the working documentation and have passed individual tests.

4.2. When testing individually, you should check:

a) compliance of the installed automation systems with working documentation and the requirements of these rules;

b) pipe lines for strength and density;

c) insulation resistance of electrical wiring;

d) measurements of signal attenuation in individual fibers of an installed optical cable according to special instructions.

4.3. When checking the installed systems for compliance with the working documentation, the compliance of the installation locations of instruments and automation equipment, their types and technical characteristics of the equipment specifications, compliance with the requirements of this SNiP and operational instructions for the installation methods of instruments, automation equipment, switchboards and consoles, and other means of local automated process control systems is checked, electrical and pipe wiring.

4.4. Testing of pipe wiring for strength and density, as well as checking the insulation resistance of electrical wiring is carried out in accordance with Section. 3.

4.5. After completing the individual testing, an acceptance certificate for the installed automation systems is drawn up, to which documents are attached according to items 4-12, 16, 21 of Appendix 1.

4.6. It is allowed to transfer installation work for adjustment by individual systems or individual parts of the complex (for example, control rooms and operator rooms, etc.). The delivery of installed automation systems is documented in a document (see mandatory Appendix 1).

5. COMMISSIONING WORK

5.1. Commissioning work must be carried out in accordance with mandatory Appendix 1 to SNiP 3.05.05-84 and these rules.

5.2. When carrying out commissioning work, the requirements of the project and technological regulations of the facility being commissioned, the “Rules for the construction of electrical installations” (PUE), the “Rules for the technical operation of consumer electrical installations” (RTE) and the “Safety rules for the operation of electrical installations of consumers” (PTB), must be observed. approved by the USSR Ministry of Energy.

5.3. During the period of individual testing and comprehensive testing of process equipment, the customer or, on his behalf, the commissioning organization must ensure the commissioning of automation systems necessary for testing or testing of process equipment in accordance with the design and technical specifications of the manufacturing enterprises.

5.4. Before the start of work on setting up automation systems, the customer must bring into working order all the control and shut-off valves on which the actuators of the automation systems are mounted; put into operation automatic fire extinguishing and alarm systems.

5.5. Commissioning work on automation systems is carried out in three stages.

5.6. At the first stage preparatory work is carried out, and the working documentation of automation systems, the main characteristics of devices and automation equipment are studied. Instruments and automation equipment are checked with the necessary adjustment of individual equipment elements.

5.7. To check devices and automation equipment, the customer is obliged to:

deliver instruments and automation equipment to the production premises to the inspection site;

transfer to the commissioning organization, during the testing of instruments and automation equipment, spare parts and special tools supplied by the manufacturers of the instruments and automation equipment being tested, as well as calibration equipment and special tools supplied as a set.

5.8. When checking instruments and automation equipment, they check the compliance of the basic technical characteristics of the equipment with the requirements established in the passports and instructions of the manufacturers. The results of testing and adjustment are recorded in a certificate or equipment passport. Faulty devices and automation equipment are transferred to the customer for repair or replacement.

Instruments and automation equipment, disassembled, without technical documentation (passport, certificate, etc.), with changes not reflected in the technical specifications, are not accepted for inspection. Upon completion of the inspection, devices and automation equipment are transferred for installation according to the certificate.

5.9. At the second stage work is carried out on autonomous adjustment of automation systems after their installation is completed.

In this case the following is carried out:

checking the installation of instruments and automation equipment for compliance with the requirements of the instructions of manufacturers of instruments and automation equipment and working documentation; detected defects in the installation of devices and automation equipment are eliminated by the installation organization;

replacement of individual defective elements: lamps. diodes, resistors, fuses, modules, etc. for serviceable ones issued by the customer;

checking the correct marking, connection and phasing of electrical wiring;

phasing and control of characteristics of actuators;

setting up logical and temporal relationships of alarm, protection, blocking and control systems; checking the correct passage of signals;

preliminary determination of object characteristics, calculation and adjustment of system equipment parameters;

preparation for switching on and putting into operation automation systems to ensure individual testing of process equipment and adjusting the settings of system equipment during their operation;

preparation of production and technical documentation.

5.10. Necessary shutdowns or switches of pipe and electrical wiring associated with checking or adjusting individual devices or automation equipment are carried out by the commissioning organization.

5.11. Automation systems should only be put into operation when:

no violations of the requirements for the operating conditions of devices and automation equipment, communication channels (temperature, humidity and aggressiveness of the environment, etc.) and safety precautions;

the presence of the minimum required technological load of the automation facility for determining and setting parameters for setting up instruments and automation equipment, testing and commissioning of automation systems;

compliance of the operating settings of devices and automation equipment with those specified in the working documentation or established by the customer;

the customer has the documents confirming the completion of installation work listed in mandatory Appendix 1.

5.12. At the third stage work is being carried out on the comprehensive adjustment of automation systems, bringing the settings of instruments and automation equipment, communication channels to values ​​​​at which the automation systems can be used in operation. In this case, it is carried out in a complex:

determining the compliance of the procedure for testing devices and elements of alarm, protection and control systems with the algorithms of working documentation, identifying the causes of failure or “false” activation, setting the required response values ​​of positional devices;

determining whether the throughput of shut-off and control valves corresponds to the requirements of the technological process, the correct operation of switches;

determining the flow characteristics of the regulatory bodies and bringing them to the required standard using the adjustment elements available in the design;

preparation for switching on and putting into operation automation systems to ensure comprehensive testing of process equipment;

clarification of the static and dynamic characteristics of the object, adjustment of the values ​​of system settings, taking into account their mutual influence during operation;

testing and determining the suitability of automation systems to ensure the operation of equipment with productivity corresponding to the standards for developing design capacities in the initial period;

analysis of the operation of automation systems in operation;

preparation of production documentation.

5.13. The third stage of work is carried out after the complete completion of construction and installation work, their acceptance by the working commission, in accordance with the requirements of SNiP III-3-81 and these rules on existing equipment and in the presence of a stable technological process.

5.14. Measurement of flow characteristics and determination of the throughput of the regulating bodies should be carried out provided that the parameters of the medium in the pipeline comply with the standards established by the standard, working documentation or passport for the control valves.

5.15. Adjustments to the response values ​​of elements and devices of alarm and protection systems established by the working documentation or other technological documentation should be made only after the customer has approved the new values.

5.16. To prepare automation systems for operation during the period of comprehensive testing of process equipment, the customer must provide the commissioning organization with a list of systems required for inclusion and a schedule for their activation.

5.17. The personnel of the commissioning organization allocated to service the automation systems included in the work must be instructed in safety precautions and work rules at an operating enterprise. Instruction is carried out by customer services to the extent established by industry ministries; an entry about its implementation must be made in the safety log.

5.18. In the absence of specific requirements for the performance indicators of automation systems in the working documentation, the determination of such requirements is carried out by the customer in agreement with the commissioning organization.

When determining requirements for the performance indicators of automation systems, the requirements for indicators of quality and reliability of the system must first be set.

5.19. All switching of operating modes of technological equipment when determining the actual characteristics of an automation object must be carried out by the customer. The activation and deactivation of automation systems must be recorded in the operational log.

5.20. Commissioning work on automation systems should be carried out in accordance with the requirements given in the working documentation, instructions of manufacturers of instruments and automation equipment, or in industry rules for the acceptance into operation of completed construction facilities, approved by the relevant ministries and departments of the USSR in agreement with the USSR State Construction Committee.

5.21. The scope and conditions of commissioning work for individual automation systems are determined in a program developed by the commissioning organization and approved by the customer and providing for compliance with the requirements of paragraphs. 5.5-5.12.

5.22. The results of commissioning work are documented in a protocol, which includes an assessment of the system’s operation, conclusions and recommendations. The implementation of recommendations to improve the operation of automation systems is carried out by the customer.

5.23. The transfer of automation systems into operation is carried out in agreement with the customer, both for individually established systems and comprehensively for automated installations, technological equipment units and workshops.

When commissioning automation systems for separately established systems, an acceptance certificate for commissioning of automation systems is drawn up in accordance with the mandatory Appendix 1.

The following documentation must be attached to the act:

list of settings of devices, instruments and automation equipment and values ​​of settings for automatic control (regulation) systems;

programs and test reports for automation systems;

schematic diagram of the automation working documentation with all changes made and agreed upon with the customer during the commissioning process (one copy);

passports and instructions from manufacturers of instruments and automation equipment, additional technical documentation received from the customer during the commissioning process.

5.24. The completion of commissioning work is recorded by a certificate of acceptance of automation systems into operation to the extent provided for by the project.

ANNEX 1

Mandatory

PRODUCTION DOCUMENTATION,

DURING INSTALLATION AND COMMISSIONING

AUTOMATION SYSTEMS

Decree of the USSR State Construction Committee dated October 25, 1990 N 93 approved and from January 1, 1991 the USSR Ministry of Montazhspetsstroy developed by GPKI Proektmontazhavtomatika, published below, amended N 1 SNiP 3.05.7-85 “Automation Systems”, approved by the USSR State Construction Committee Decree dated October 18, 1985 No. 175.

Clause 1.5 shall be stated in a new edition:

"1.5. When installing and commissioning automation systems, documentation should be drawn up in accordance with the mandatory Appendix 1 of these rules."

Clause 1.6. The words: “equipment after individual testing” should be replaced with the words: “installed automation systems in the scope of working documentation.”

Clause 2.5 should be supplemented with the following subclause:

"e) availability of documentation for the installation and testing of pipe lines for pressures above 10 MPa (100 kgf/sq. cm)."

Clause 2.17. In the first sentence, delete the word “specifications”;

After the second paragraph, add a new paragraph with the following content:

“Parts of pipe lines for pressures above 10 MPa (100 kgf/sq.cm) are submitted for installation in the form of products prepared for installation (pipes, fittings for them, connecting parts, hardware, fittings, etc.) or assembled into assembly units equipped according to the specifications of the detail drawings. Pipe openings must be closed with plugs. For products and assembly units that have welded seams, acts or other documents must be submitted confirming the quality of welded joints in accordance with SNiP 3.05.95-84 ".

Clause 2.18-2.20 shall be deleted.

Clause 3.51. Restate the penultimate paragraph in a new edition:

“As a rule, armored pneumatic cables are not allowed to be laid in boxes.”

Clause 3.65. In the first sentence, delete the words “harvesting and”.

Clauses 3.67-3.74 shall be deleted.

Section 3 should be supplemented with a subsection with the following content:

"Optical cables

3.135. Before installing an optical cable, you should check its integrity and the attenuation coefficient of the optical signal.

3.136. The laying of optical cables is carried out in accordance with the working documentation using methods similar to those adopted for laying electrical and pipe wiring, as well as communication cables.

Optical cables are not allowed to be laid in the same tray, box or pipe together with other types of automation system wiring.

Single- and dual-fiber cables must not be laid on cable shelves.

It is prohibited to use ventilation ducts, shafts and escape routes for laying optical cables.

3.137. Optical cables laid openly in places of possible mechanical influences at a height of up to 2.5 m from the floor of the room or service areas must be protected by mechanical casings, pipes or other devices in accordance with the working documentation.

3.138. When pulling an optical cable, the tensioning means should be secured to the power element, using tension limiters and anti-twist devices. Traction forces must not exceed the values ​​specified in the technical specifications for the cable.

3.139. The optical cable must be laid under climatic conditions specified in the technical specifications for the cable. Laying an optical cable at an air temperature below minus 15 degrees C or a relative humidity of more than 80% is not allowed.

3.140. In places where the optical cable is connected to transceiver devices, as well as in places where couplings are installed, it is necessary to provide a supply of cable. The margin must be at least 2 m for each spliced ​​optical cable or transceiver device.

3.141. The optical cable should be mounted on supporting structures when laying vertically, as well as when laying directly along the surface of the walls of premises - along the entire length every 1 m; when laying horizontally (except for boxes) - in turning areas.

When turning, the optical cable must be fastened on both sides of the corner at a distance equal to the permissible bending radius of the cable, but not less than 100 mm, counting from the top of the corner. The turning radius of the optical cable must meet the requirements of the cable specifications.

When laying an optical cable along single supports, these supports must be installed no more than 1 m apart, and the cable must be secured to each support.

3.142. The installed optical cable should be monitored by measuring the signal attenuation in individual fibers of the optical cable and checking it for integrity. The results of the control are documented in a protocol for measuring the optical parameters of the mounted optical cable (see mandatory Appendix 1)."

Clause 4.2 should be supplemented with the following paragraph:

"d) measurements of signal attenuation in individual fibers of an installed optical cable according to special instructions."

Clause 4.5 after the words “the act is drawn up” should be stated in a new wording:

"acceptance of installed automation systems, to which documents are attached according to items 4-12, 16, 21 of Appendix 1."

Clause 4.6. The second proposal should be presented in a new edition:

“The handover of installed automation systems is documented in a document (see mandatory appendix 1).”

Appendix 1, position 17 in the “Name” column, replace the words: “Certificate of acceptance of equipment after individual testing” with the words: “Certificate of acceptance of installed automation systems”; in the column “Content of the document” the words: “According to the form of act appendix 1 SNiP III-3-81” are replaced with the words: “Form is arbitrary”;

Add item 21 with the following content:

In the “Name” column write: “Protocol for measuring the optical parameters of the mounted optical cable”; in the “Document Contents” column write: “Free form.”