SNiP 3.05.07-85

BUILDING REGULATIONS

AUTOMATION SYSTEMS

Introduction date 1986-07-01

GPI Projectmontazhavtomatika of the USSR Minmontazhspetsstroy was DEVELOPED (M.L.Vitebsky - head of the topic, V.F.Valetov, R.S.Vinogradova, Ya.V.Grigoriev, A.Ya.Minder, N.N.Pronin).

INTRODUCED by the USSR Minmontazhspetsstroy.

PREPARED FOR APPROVAL by the Glavtekhnormirovanie Gosstroy of the USSR (B.A. Sokolov).

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

AGREED with the Ministry of Health of the USSR (letter of December 24, 1984 No. 122-12 / 1684-4), Gosgortekhnadzor of the USSR (letter of 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" becomes invalid.

Amendment No. 1 was made to SNiP 3.05.07-85 "Automation Systems", approved by Decree of the USSR Gosstroy N 93 of October 25, 1990 and put into effect on January 1, 1991. Items, tables, which have been amended, are noted in these Building codes and regulations sign.

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

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

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

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

1. GENERAL PROVISIONS

1.1. During the 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- 82*.

1.2. Work on the installation of automation systems must be carried out in accordance with the approved design and estimate documentation, the project for the production of works (PPR), as well as with the technical documentation of manufacturers.

1.3. Installation of instruments and automation equipment with the nodal method of construction and the complete-block method of installation of technological equipment and pipelines, carried out in accordance with SNiP 3.05.05-84, should be carried out in the process of pre-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 (POS) in terms of performing installation work using complete-block and nodal methods, arranging special rooms intended for automation systems (control rooms, operator rooms, equipment rooms, sensor rooms, etc. . p.), advancing the timing of 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 Sec. 4 of these rules, and signing the act of acceptance of the installed automation systems in the scope of the working documentation.

2. PREPARATION FOR INSTALLATION WORKS

General requirements

2.1. The 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 should be determined by the customer and agreed with the general contractor and the installation organization:

a) the conditions for completing the facility with devices, automation equipment, products and materials for the customer's supply, providing for their delivery to the technological unit, unit, line;

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

c) conditions for transportation of blocks of panels, consoles, group installations of devices, pipe blocks to the place of installation.

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

a) working documentation received;

b) a project for the production of works has been developed and approved;

c) acceptance of the construction and technological readiness of the object for the installation of automation systems was carried out;

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

e) pre-assembly of units and blocks was carried out;

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

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

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

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

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

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

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

g) measures are provided in accordance with the project (working draft) to ensure the protection of instruments and automation equipment, panels, consoles, pipe and electrical wiring from the effects 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 the production of work, the installation organization must check the following:

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

b) bindings in the working drawings of instruments and automation equipment supplied by manufacturers complete with process equipment;

c) taking into account the requirements of 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 zones and their boundaries, categories, groups and names of explosive mixtures; installation locations of separating seals and their types;

f) availability of documentation for the installation and testing of pipe wiring 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 in stages for individual completed parts of the facility (control rooms, operator rooms, technological blocks, nodes, lines, etc.).

2.7. The supply of products and materials to the facility by the organization that assembles the automation systems should, as a rule, be carried out using containers.

Acceptance of the object for installation

2.8. Prior to the installation of automation systems at the construction site, as well as in buildings and premises handed over for the installation of automation systems, the construction work provided for by the working documentation and the project for the production of works must be completed.

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

marking axes and working elevation marks are applied:

channels, tunnels, niches, furrows, embedded pipes for concealed wiring, openings for the passage of pipe and electrical wiring with the installation of boxes, sleeves, branch pipes, frames and other embedded structures;

platforms for servicing instruments and automation equipment were installed;

mounting openings were left for moving large units and blocks.

2.9. In special premises intended for automation systems (see clause 1.4), as well as in production premises in places intended for the installation of automation devices and means, construction and finishing work must be completed, formwork, scaffolding and scaffolding must be dismantled, not required for the installation of automation systems, as well as garbage removed.

2.10. Special premises intended for automation systems (see clause 1.4) must be equipped with heating, ventilation, lighting, and, if necessary, air conditioning, mounted according to a permanent scheme, have glazing and door locks. The temperature in the premises must not be lower than 5°C.

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

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

Chalk whitewashing of the premises is prohibited.

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

2.12. By the beginning of the installation of automation systems on technological, sanitary and other types of equipment, pipelines must be installed:

embedded and protective structures for the installation of primary devices. Embedded structures for the installation of selective devices for pressure, flow and level must end with shutoff valves;

automation devices and means built into pipelines, air ducts and devices (restriction devices, volume and speed meters, rotameters, flow sensors of flow meters and concentrators, level meters of all types, regulators, etc.).

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

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

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 sewerage network was laid to collect wastewater from drainage pipes of automation systems;

a grounding network has been completed;

Works on the installation of automatic fire extinguishing systems were completed.

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

2.15. The acceptance of an object is documented by an act of readiness of the object for the production of work on the installation of automation systems in accordance with the mandatory Appendix 1.

Transfer to the 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 between 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, specifications and have appropriate certificates, technical passports or other documents certifying their quality. Pipes, fittings and connections for oxygen pipe lines must be degreased, which must be indicated in the documentation confirming this operation.

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

Parts of pipe wiring for pressures over 10 MPa (100 kgf / sq. cm) are transferred for installation in the form of products prepared for installation (pipes, fittings for them, fittings, hardware, fittings, etc.) or assembled into assembly units completed according to the specification of detailed drawings. Pipe openings must be closed with plugs. For products and assembly units having welds, acts or other documents confirming the quality of welded joints in accordance with SNiP 3.05.05-84 must be transferred.

Elimination of equipment defects found during the acceptance process is carried out in accordance with the "Rules on Contracts for Capital Construction".

Paragraphs 2.18-2.20 are excluded.

3. PRODUCTION OF INSTALLATION WORKS

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 computer systems, provided for by the technical specifications or operating instructions for this equipment.

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

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

At the first stage, it is necessary to carry out: preparation of mounting structures, assemblies and blocks, electrical wiring elements and their pre-assembly outside the installation area; checking the presence of embedded structures, openings, holes in building structures and building elements, embedded structures and selective devices on process equipment and pipelines, the presence of a grounding network; laying in the foundations under construction, walls, floors and ceilings of pipes and blind boxes for hidden wiring; route marking and installation of supporting and supporting structures for electrical and pipe wiring, actuators, devices.

At the second stage, it is necessary to carry out: laying pipe and electrical wiring according to established structures, installing panels, cabinets, consoles, instruments and automation equipment, connecting pipe and electrical wiring to them, individual tests.

3.3. Mounted devices and automation equipment for the electrical branch of the State Instrumentation System (SSE), panels and consoles, structures, electrical and pipe wiring to be grounded according to the working documentation, must be connected to the ground loop. If there are requirements of manufacturers, the means of aggregate and computer complexes must be connected to a special ground loop.

Installation of structures

3.4. The 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 (bases) should not be violated;

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

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

3.6. The supporting structures must be parallel to each other, as well as parallel or perpendicular (depending on the type of structures) to the building structures (bases).

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. Installation of boxes and trays should be carried out in enlarged blocks assembled in assembly and procurement workshops.

3.9. The fastening of boxes and trays to the supporting structures and their connection to each other must be bolted or welded.

When bolted, the tightness of the 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.

When connecting by welding, burn-through of boxes and trays is not allowed.

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

3.11. At the intersection of settlement and expansion joints of buildings and structures, as well as at outdoor 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. The 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 piping of automation systems (impulse, command, supply, heating, cooling, auxiliary and drainage according to the recommended Appendix 3), operating at an absolute pressure of 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 panels and consoles.

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, equipment, methods of work used during the installation of pipe wiring should ensure the possibility of installing the following pipes and pneumatic cables:

steel water and gas pipelines according to GOST 3262-75 ordinary and light with a conditional passage of 8; fifteen; 20; 25; 40 and 50 mm;

steel seamless cold-formed according to GOST 8734-75 with an outer diameter of 8; ten; fourteen; 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; eight; ten; fourteen; 16 and 22 mm with a wall thickness of at least 1 mm. For pipe wiring with pressure over 10 MPa (100 kgf / sq. cm), pipes with an outer diameter of 15 can be used; 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;

from aluminum and aluminum alloys according to 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 specifications of manufacturers 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 pipes made of polyethylene in accordance with GOST 18599-83 heavy with an outer diameter of 12; 20 and 25 mm;

polyvinyl chloride flexible according to the specifications of manufacturers 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 specifications of manufacturers (polyethylene tubes must have dimensions 6X1; 8X1 and 8X1.6 mm).

The choice of a specific assortment of pipes depending on the properties of the transported medium, the value of the measured parameters, 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 exposed to extreme heat or cold, shock or vibration.

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

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

3.19. The total width of a group of horizontal and vertical pipe wiring fixed on the same 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 wiring 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. Pipelines, 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 indicated in the working documentation, and in the absence of such instructions, the wiring must be laid with the following minimum slopes: impulse (see recommended Appendix 3) to pressure gauges for all static pressures, membrane or pipe draft pressure meters, gas analyzers - 1:50; impulse to steam, liquid, air and gas flow meters, level regulators, drain gravity oil pipelines of hydraulic jet regulators and drainage lines (see recommended Appendix 3) - 1:10.

The slopes of the heating (see recommended appendix 3) pipe wiring must comply with the requirements for heating systems. Pipe wiring requiring different slopes, fixed on common structures, should be laid along the largest slope.

3.22. The working documentation should provide for measures to compensate for thermal elongation of pipe wiring. For cases when the working documentation provides for self-compensation of temperature elongations of pipe wiring at turns and bends, it should indicate at what distances from the turn (bend) the pipes should be fixed.

3.23. Metal pipe wiring at the points of transition through the expansion joints of buildings must have U-shaped compensators. Places for installing compensators and their number should be indicated in the working documentation.

3.24. On piping laid with a slope, U-shaped compensators, "ducks" and similar devices should be located so that they are the highest or lowest point of the piping and the possibility of accumulation of air (gas) or condensate in them is excluded.

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

3.26. The installation of pipe wiring should ensure: the strength and tightness of the wiring, pipe connections to each other and their connections to fittings, instruments and automation equipment; reliability of fixing pipes on structures.

3.27. Fastening of pipe wiring to supporting and supporting structures should be carried out with normalized fasteners; fastening of pipe wiring by welding is prohibited. Fastening must be carried out without violating the integrity of the pipes.

3.28. It is not allowed to fix pipe wiring on the outer side of the boards, housings of devices and automation equipment.

It is allowed to fix pipe wiring on the process equipment being dismantled at selective devices, but not more than at two points.

Fixing pipe wiring on non-disassembled process equipment is allowed upon agreement with the customer. Pipe wiring in places of approach to the equipment must have detachable connections.

3.29. Pipe wiring must be fixed:

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

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

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

on both sides of the U-shaped compensators at a distance of 250 mm from their bend when installing the compensators at the points of transition of pipe wiring through expansion joints in the walls.

3.30. Changing the direction of the pipe runs should generally 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, crumples, etc. on the bent part of the pipes;

b) the ovality of the section of pipes in the places of bending is allowed no more than 10%.

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

for cold-bent polyethylene pipes:

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

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

for PVC plasticized pipes (flexible), bent in a cold state - at least 3D n;

for pneumatic cables - not less than 10D n;

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

3.33. The connection of pipes during installation is allowed to be carried out both with one-piece and detachable connections. When connecting pipe wiring, it is prohibited to eliminate gaps and misalignment of pipes by heating, stretching or bending pipes.

3.34. The connection of pipe wiring to embedded structures (see recommended Appendix 3) of process equipment and pipelines, to all devices, automation equipment, switchboards and consoles must be carried out with detachable connections.

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

3.36. It is forbidden 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 fixing points.

3.38. When connecting pipes in group pipe wiring, the connections must be offset to allow the tool to work when installing or dismantling pipe wiring.

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

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

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

3.41. All piping must be marked. The markings applied to the tags must correspond to the marking of the pipe wiring given in the working documentation.

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

Steel pipes designed to protect pipe lines must be painted on the outside. Plastic pipes cannot be painted. Non-ferrous metal pipes are painted only in cases specified in the working documentation.

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

3.44. Plastic pipes and pneumatic cables should be laid along fireproof structures and laid freely along them, without tension, taking into account the change 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 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 piping should be ensured by rational arrangement of movable (free) and fixed (rigid) fasteners and curved elements of the piping itself (bends, ducks, "snake" gasket).

3.46. The arrangement of fixed fasteners that do not allow the movement of wires 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.

Fasteners must be fixed at junction boxes, cabinets, shields, etc., as well as in the middle of the sections between two turns.

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

3.47. Fastening of plastic pipes and pneumatic cables on bends is not allowed.

The top of the turn for horizontal laying should 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 fixed with movable fasteners.

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

3.49. Plastic pipes and pneumatic cables laid openly in places of possible mechanical impacts 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 wiring.

Pipe sections up to 1 m long for instruments, actuators and automation equipment installed on process pipelines and apparatuses may not be protected.

3.50. External piping 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 fasteners. When laying in boxes and trays laid vertically, pipes and cables must be fixed 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 fixed in accordance with clause 3.47 of these rules.

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

As a rule, it is not allowed to lay armored pneumatic cables in ducts.

Pipes and cables are led out of the box through holes in its wall or bottom. Plastic bushings must be installed in the holes.

3.52. The distances between the attachment points of plastic pipes or bundles of them should be no more than those indicated in Table. one.

3.53. Pipelines made of plastic pipes, through which liquids or wet gases are transported, as well as plastic pipes at an ambient or filling medium temperature of 40 ° C and above, should be laid in horizontal sections on solid supporting structures, and in vertical sections, the distance between the fasteners should be reduced twice as compared with those indicated in the table. one.

Table 1

3.54. When connecting to instruments, equipment and bulkhead connections (taking into account the permissible bending radii), plastic pipes must have a margin of at least 50 mm in case of possible damage during repeated rewiring 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 must be formed only under the action of the own weight of the pneumatic cable and must not exceed 1% of the span length.

Fastening with horizontal laying should be carried out through one support.

3.56. When installing metal pipe wiring, it is allowed to use any welding methods that ensure high-quality performance of 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 of pipe welding, 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 Minmontazhspetsstroy. Types and structural elements of welds must comply with GOST 16037-80.

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

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

In appearance, solder joints should have a smooth surface. Influxes, captivity, shells, foreign inclusions and non-drinking are not allowed.

3.60. Fastening of single metal pipe wiring must be carried out on each support.

Additional installation requirements for oxygen piping

3.61. Work on the installation of oxygen piping should be carried out by personnel who have studied the special requirements for performing these works.

3.62. During the installation and welding of the pipeline, contamination of its inner surface with fats and oils should be excluded.

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

Pipes, fittings and connections intended for pipelines filled with oxygen must be provided with a document confirming their degreasing and suitability for installation.

3.64. With threaded connections, it is prohibited to wind flax, hemp, as well as lubrication with red lead and other materials containing oils and fats.

Additional requirements for the installation of piping for pressures over 10 MPa (100 kgf / sq. cm)

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

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

3.66. All elements of pipe wiring for pressure over 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 report is drawn up for pipes, fittings, pipeline parts, etc.

Paragraphs 3.67-3.74 have been deleted.

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

Testing of pipe wiring

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

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

3.77. The value of the test pressure (hydraulic and pneumatic) for strength and density in piping (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 piping filled with air at an operating pressure of P p ≤ 0.14 MPa (1.4 kgf / sq. cm) should be tested for strength and density by pneumatic test pressure P pr \u003d 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 wiring and pneumatic cables must be carried out at a temperature of the test medium not exceeding 30 ° C.

3.81. Testing of plastic pipe wiring is allowed to be carried out no earlier than 2 hours after the last pipe welding.

3.82. Before testing for strength and density, all pipe wiring, 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) purge, and if specified in the working documentation - flushing.

3.83. Purge of pipe wiring should be carried out with compressed air or inert gas, dried and free from oil and dust.

Pipelines for steam and water can be blown and washed with a working medium.

3.84. Purge of pipe wiring should be carried out with a pressure equal to the working one, 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 schemes for purge of process pipelines agreed with the customer.

Purge should be carried out for 10 minutes until clean air appears.

Purge of pipe wiring operating at overpressure up to 0.1 MPa (1 kgf/sq.cm) or absolute pressure from 0.001 to 0.095 MPa (from 0.01 to 0.95 kgf/sq.cm) should be carried out with air pressure not exceeding 0.1 MPa (1 kgf / sq. cm).

3.85. Flushing of pipe wiring should be carried out until a steady appearance of clean water from the outlet pipe or drain device of the washed pipe wiring.

At the end of flushing, the piping must be completely emptied of water and, if necessary, purged with compressed air.

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

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

Pipe lines intended for operation at P p ≤ 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 assembled hydraulic pressure with shutoff valves and pressure gauges.

3.88. During hydraulic tests, water shall be used as the test fluid. The water temperature during testing should not be lower than 5°C.

3.89. For pneumatic tests, air or an 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 pressure rises are recommended:

1st - 0.3 R pr;

2nd - 0.6 R pr;

3rd - up to R pr;

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

The pressure at the 1st and 2nd stages is maintained for 1-3 minutes; during this time, according to the readings of the manometer, the absence of a pressure drop in the piping is established.

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

On pipelines with a pressure P p ≥ 10 MPa, the test pressure is maintained for 10-12 minutes.

Pressurizing the 3rd stage is a test of strength.

The working pressure (4th stage) is maintained for the time necessary for the final inspection and detection of defects. The 4th stage pressure is a density test.

3.91. Defects are eliminated after the pressure in the piping is reduced to atmospheric.

After the defects are eliminated, the test is repeated.

3.92. Pipe wiring is considered fit for service if during the strength test there was no pressure drop on the pressure gauge and no leaks were found in the welds and joints during the subsequent tightness test.

At the end of the test, an act must be drawn up.

3.93. Pipelines filled with combustible, toxic and liquefied gases (except for gas pipelines with pressure 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), for an absolute pressure from 0.001 to 0.095 MPa (from 0.01 to 0.95 kgf / sq. cm) must be subjected to additional tests for density with the determination of pressure drop.

3.94. Before testing the tubing for tightness with the determination of the pressure drop, the tubing must be flushed or blown.

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

3.96. The density test with the determination of the pressure drop is carried out with air or an inert gas with a test pressure equal to the working one (P pr \u003d P p), except for pipelines for absolute pressure from 0.001 to 0.095 MPa (from 0.01 to 0.95 kgf / sq. cm) to be tested with the following pressure:

a) pipelines filled with combustible, 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 the additional test for density and the holding time under test pressure is set in the working documentation, but must be at least for pipelines:

3.98. Pipe wiring is considered to have passed the test if the pressure drop in them does not exceed the values ​​\u200b\u200bspecified in Table. 2.

table 2

The specified norms refer to pipe wiring with a conditional passage of 50 mm. When testing pipe wiring with other conditional passages, the rate of pressure drop in them is determined by the product of the above values ​​​​of pressure drop by a coefficient calculated by the formula

where D y - conditional passage of the tested pipe wiring, mm.

3.99. At the end of the tests of pipe wiring for density with the determination of the pressure drop during the test, an act must be drawn up.

3.100. When conducting pneumatic tests, the safety requirements set forth in SNiP III-4-80 and the "Rules for the Design and Safe Operation of Pipelines for Combustible, Toxic and Liquefied Gases" (PUG-69) must be observed.

Wiring

3.101. Installation of electrical wiring of automation systems (circuits of measurement, control, power supply, signaling, etc.) with wires and control cables in boxes and trays, in plastic and steel protective pipes, on cable structures, in cable structures and on the ground; installation of electrical wiring in explosion and fire hazardous areas, installation of grounding (grounding) must comply with the requirements of SNiP 3.05.06-85, taking into account the specific features of the installation of automation systems set forth 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, clamp assemblies should, as a rule, be soldered if the design of their terminals allows this (non-separable contact connection).

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

Single-wire copper conductors of wires and cables with a 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 cross-sections - using lugs or directly under the screw or bolt. At the same time, 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 a pin; the ends of stranded conductors (rings, pins) must be soldered, the pin ends can be crimped with pin tips.

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

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

Connection of single-wire conductors of wires and cables (for screw or soldering) is allowed only to fixed elements of devices and apparatuses.

The connection of conductors of wires and cables to devices, apparatuses and automation equipment having output devices in the form of plug connectors must be carried out by means of stranded (flexible) copper wires or cables laid from clamp assemblies or junction boxes to devices and automation equipment.

Collapsible and non-separable connections of copper, aluminum and aluminum-copper conductors of wires and cables with leads and clamps of devices, devices, clamp assemblies must be carried out 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 with each other, with pull boxes, etc. in rooms of all classes should be carried out with standard threaded connections.

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

3.104. The mounted electrical wiring of automation systems must be subjected to an external inspection, which establishes the 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 an insulation resistance test.

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

During insulation resistance measurements, 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, an act is drawn up.

Shields, racks and consoles

3.106. Boards, cabinets and consoles must be handed over by the customer in a finished 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 assembling and installing shields, cabinets and consoles on site.

3.107. Separate panels, consoles and cabinets must be assembled into composite panels (operator's, dispatcher's) of any configuration using detachable connections.

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

3.108. Shields, 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 fixing the support frames of the shields to the embedded structures is one-piece, carried out by welding.

Boards, cabinets and consoles during installation must be aligned with a plumb line, and then fixed.

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 tilt angle of the mnemonic diagram specified in the working documentation must be maintained within the tolerances specified in it.

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

3.110. In order to increase the level of industrialization of installation work, as a rule, industrial automation rooms should be used, including complete operator rooms (KOP) and complete sensor points (CPD). Industrial automation premises must be delivered to the facility with mounted panels, cabinets, consoles, pipe and electrical wiring. At the facility, work should only be performed on connecting external pipe and electrical wiring.

3.111. Terminations and connections of pipe and electrical wiring introduced into panels, 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 means of automation

3.112. Devices and automation equipment, checked with the execution of the relevant protocols, should be accepted for installation.

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

3.113. Testing of devices and automation equipment is carried out by the customer or specialized organizations involved by him, performing work on setting up devices and automation equipment using the methods adopted in these organizations, taking into account the requirements of the instructions of the State Standard and manufacturers.

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

Together with devices 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 devices and automation equipment and their relative position should be carried out according to the working documentation. Their installation should ensure the accuracy of measurements, free access to the instruments and their shut-off and adjustment devices (taps, valves, switches, adjustment knobs, etc.).

3.116. In places where devices and automation equipment are installed that are inaccessible for installation and maintenance, the construction of stairs, wells and platforms must be completed before installation begins 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. Fixing devices and automation equipment to metal structures (shields, cabinets, stands, etc.) should be carried out in the ways provided for by the design of devices and automation equipment and the parts included in their kit.

If fasteners are not included in the set of individual devices and automation equipment, then they must be fixed with normalized fasteners.

In the presence of vibrations at the installation sites of devices, threaded fasteners must have devices that exclude their spontaneous unscrewing (spring washers, lock nuts, cotter pins, etc.).

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

3.121. Cases of devices and automation equipment must be grounded in accordance with the requirements of the instructions of manufacturers and SNiP 3.05.06-85.

3.122. Sensitive elements of liquid thermometers, temperature alarms, manometric thermometers, thermoelectric converters (thermocouples), resistance thermocouples should, as a rule, be located in the center of the measured medium flow. At pressures over 6 MPa (60 kgf/sq.cm) and steam flow rates of 40 m/s and water flow rates of 5 m/s, the depth of immersion of 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 transducers (thermocouples) and resistance thermocouples must fit snugly against the controlled surface.

Before installing these devices, the place of their contact with pipelines and equipment must be cleaned of scale and cleaned to a metallic sheen.

3.124. Thermoelectric converters (thermocouples) in porcelain fittings may be immersed in the 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 indicated 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 bay must be tied in three places with non-metallic bandages 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 should define a constant correction to the instrument readings.

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

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

3.129. Separation vessels are installed according to the standards or working drawings of the project, as a rule, near the points of sampling of impulses.

Separation vessels must be installed so that the control openings of the vessels are 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 measurable level. The gas or air pressure in the measuring tube must allow the gas (air) to pass through the tube at the maximum liquid level. The flow rate of gas or air in piezometric level gauges must be adjusted to a value that provides coverage of all losses, leaks and the required speed of the measuring system.

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

3.132. When indicating and recording instruments are installed on the wall or on racks attached to the floor, the scale, diagram, shut-off valves, adjustment and control elements of pneumatic and other sensors should be at a height of 1-1.7 m, and the control valves of the shut-off valves - in one plane with the scale of the device.

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

3.134. All automation devices and means installed or built into process apparatuses and pipelines (restriction and selective devices, meters, rotameters, level gauge floats, direct-acting regulators, etc.) must be installed in accordance with the working documentation and with the requirements specified in the mandatory annex 5.

Optical cables

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

3.136. The laying of optical cables is carried out in accordance with the working documentation in ways similar to those adopted when 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 wiring of automation systems.

Single- and double-fiber cables must not be routed through cable trays.

It is forbidden to use ventilation ducts and shafts and escape routes for laying an optical cable.

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

3.138. When pulling an optical cable, the means of tension should be fastened behind the power element, using strain limiters and anti-twist devices. Pulling forces must not exceed the values ​​specified in the specifications for the cable.

3.139. The laying of an optical cable must be carried out under the climatic conditions specified in the technical specifications for the cable. It is not allowed to lay an optical cable at an air temperature below minus 15°C or a relative humidity of more than 80%.

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

3.141. The optical cable should be fastened to supporting structures during vertical laying, as well as when laying directly on the surface of the walls of the premises - along the entire length after 1 m; with horizontal laying (except for ducts) - in the places of rotation.

At bends, the optical cable must be fixed 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 specification.

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

3.142. The installed optical cable should be monitored by measuring the attenuation of signals 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).

4. INDIVIDUAL TESTS

4.1. For acceptance by the working commission, automation systems are presented in the amount provided for by the working documentation, and which have passed individual tests.

4.2. During individual testing, you should check:

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

b) pipe wiring for strength and density;

c) insulation resistance of electrical wiring;

d) measurements of attenuation of signals in individual fibers of the mounted optical cable according to a special instruction.

4.3. When checking the installed systems for compliance with the working documentation, the compliance of the installation sites of devices and automation equipment, their types and technical characteristics with the equipment specification, compliance with the requirements of this SNiP and operational instructions for installation methods of devices, automation equipment, panels and consoles, other means of local APCS systems, electrical and piping.

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 Sec. 3.

4.5. After completion of work on individual testing, an act of acceptance of the installed automation systems is drawn up, to which documents are attached on positions 4-12, 16, 21 of Appendix 1.

4.6. It is allowed to transfer installation works for adjustment by separate systems or separate parts of the complex (for example, control rooms and operator rooms, etc.). The delivery of the mounted automation systems is formalized by an act (see mandatory Appendix 1).

EDITION OFFICIAL

USSR STATE COMMITTEE

CONSTRUCTION

DEVELOPED GPI (M. L. Vitebsky - theme leader, V. F. Valetov, R. S. Vinogradova, Ya. V. Grigoriev, A. Ya. Minder, N. N. Pronin).

INTRODUCED by the USSR Minmontazhspetsstroy.

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

With the introduction of SNiP 3.05.07-85 "Automation Systems" loses the sipu SNiP III-34-74 "Automation System".

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

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

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

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

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

1. General Provisions

1.1. During the 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- 82*.

1.2. Work on the installation of automation systems must be carried out in accordance with the approved design and estimate documentation, the project for the production of works (PPR), as well as with the technical documentation of manufacturers.

1.3. Installation of instruments and automation equipment with the nodal method of construction and the complete-block method of installation of technological equipment and pipelines, carried out in accordance with SNiP 3.05.05-84, should be carried out in the process of pre-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 (POS) in terms of performing installation work using complete-block and nodal methods, arranging special rooms intended for automation systems (control rooms, operator rooms, equipment rooms, sensor rooms, etc. . p.), advancing the timing of 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 Sec. 4 of these rules, and signing the act of acceptance of the installed automation systems in the scope of the working documentation.

the Russian Federation Decree of the Gosstroy of the USSR

SNiP 3.05.07-85 Automation systems (with Amendment No. 1)

set a bookmark

set a bookmark

SNiP 3.05.07-85

BUILDING REGULATIONS

AUTOMATION SYSTEMS

Introduction date 1986-07-01

GPI Projectmontazhavtomatika of the USSR Minmontazhspetsstroy was DEVELOPED (M.L.Vitebsky - head of the topic, V.F.Valetov, R.S.Vinogradova, Ya.V.Grigoriev, A.Ya.Minder, N.N.Pronin).

INTRODUCED by the USSR Minmontazhspetsstroy.

PREPARED FOR APPROVAL by the Glavtekhnormirovanie Gosstroy of the USSR (B.A. Sokolov).

APPROVED by the Decree of the USSR State Committee for Construction of October 18, 1985 N 175.

AGREED with the Ministry of Health of the USSR (letter of December 24, 1984 No. 122-12 / 1684-4), Gosgortekhnadzor of the USSR (letter of 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 becomes invalid.

Amendment No. 1 was made to SNiP 3.05.07-85 "Automation Systems", approved by Decree of the USSR Gosstroy N 93 of October 25, 1990 and put into effect on January 1, 1991. Items, tables, which have been amended, are noted in these Building codes and regulations sign (K).

Changes made by the manufacturer of the BST database N 2, 1991.

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

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

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

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

1. GENERAL PROVISIONS

1.1. During the 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- 82*.

1.2. Work on the installation of automation systems must be carried out in accordance with the approved design and estimate documentation, the project for the production of works (PPR), as well as with the technical documentation of manufacturers.

1.3. Installation of instruments and automation equipment with the nodal method of construction and the complete-block method of installation of process equipment and pipelines, carried out in accordance with SNiP 3.05.05-84, should be carried out in the process of pre-assembly of process 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 (POS) in terms of performing installation work using complete-block and nodal methods, arranging special rooms intended for automation systems (control rooms, operator rooms, equipment rooms, sensor rooms, etc. . p.), advancing the timing of their construction and transfer for installation.

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

1.6(K). The end of the installation of automation systems is the completion of individual tests performed in accordance with Sec. 4 of these rules, and signing the act of acceptance of the installed automation systems in the scope of the working documentation.

2. PREPARATION FOR INSTALLATION WORKS

General requirements

2.1. The 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 should be determined by the customer and agreed with the general contractor and the installation organization:

a) the conditions for completing the facility with devices, automation equipment, products and materials for the customer's supply, providing for their delivery to the technological unit, unit, line;

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

c) conditions for transportation of blocks of panels, consoles, group installations of devices, pipe blocks to the place of installation.

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

a) working documentation received;

b) a project for the production of works has been developed and approved;

c) acceptance of the construction and technological readiness of the object for the installation of automation systems was carried out;

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

e) pre-assembly of units and blocks was carried out;

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

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

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

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

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

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

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

g) measures are provided in accordance with the project (working draft) to ensure the protection of instruments and automation equipment, panels, consoles, pipe and electrical wiring from the effects of precipitation, groundwater and low temperatures, from pollution and damage, and computer equipment - and from static electricity.

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

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

b) bindings in the working drawings of instruments and automation equipment supplied by manufacturers complete with process equipment;

c) taking into account the requirements of 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 zones and their boundaries, categories, groups and names of explosive mixtures; installation locations of separating seals and their types;

f) availability of documentation for the installation and testing of pipe wiring 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 in stages for individual completed parts of the facility (control rooms, operator rooms, technological blocks, nodes, lines, etc.).

2.7. The supply of products and materials to the facility by the organization that assembles the automation systems should, as a rule, be carried out using containers.

Acceptance of the object for installation

2.8. Prior to the installation of automation systems at the construction site, as well as in buildings and premises handed over for the installation of automation systems, the construction work provided for by the working documentation and the project for the production of works must be completed.

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

marking axes and working elevation marks are applied:

channels, tunnels, niches, furrows, embedded pipes for concealed wiring, openings for the passage of pipe and electrical wiring with the installation of boxes, sleeves, branch pipes, frames and other embedded structures;

platforms for servicing instruments and automation equipment were installed;

mounting openings were left for moving large units and blocks.

2.9. In special premises intended for automation systems (see clause 1.4), as well as in production premises in places intended for the installation of automation devices and means, construction and finishing work must be completed, formwork, scaffolding and scaffolding must be dismantled, not required for the installation of automation systems, as well as garbage removed.

2.10. Special premises intended for automation systems (see clause 1.4) must be equipped with heating, ventilation, lighting, and, if necessary, air conditioning, mounted according to a permanent scheme, have glazing and door locks. The temperature in the premises must not be lower than 5°C.

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

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

Chalk whitewashing of the premises is prohibited.

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

2.12. By the beginning of the installation of automation systems on technological, sanitary and other types of equipment, pipelines must be installed:

embedded and protective structures for the installation of primary devices. Embedded structures for the installation of selective devices for pressure, flow and level must end with shutoff valves;

automation devices and means built into pipelines, air ducts and devices (restriction devices, volume and speed meters, rotameters, flow sensors of flow meters and concentrators, level meters of all types, regulators, etc.).

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

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

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 sewerage network was laid to collect wastewater from drainage pipes of automation systems;

a grounding network has been completed;

Works on the installation of automatic fire extinguishing systems were completed.

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

2.15. The acceptance of an object is documented by an act of readiness of the object for the production of work on the installation of automation systems in accordance with the mandatory Appendix 1.

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

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

Parts of pipe wiring for pressures over 10 MPa (100 kgf / sq. cm) are transferred for installation in the form of products prepared for installation (pipes, fittings for them, fittings, hardware, fittings, etc.) or assembled into assembly units completed according to the specification of detailed drawings. Pipe openings must be closed with plugs. For products and assembly units that have welds, acts or other documents confirming the quality of welded joints in accordance with SNiP 3.05.05-84 must be transferred.

The elimination of equipment defects found during the acceptance process is carried out in accordance with the "Rules on Contracts for Capital Construction".

(K) Clauses 2.18-2.20 are excluded.

3. PRODUCTION OF INSTALLATION WORKS

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 computer systems, provided for by the technical specifications or operating instructions for this equipment.

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

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

At the first stage, it is necessary to carry out: preparation of mounting structures, assemblies and blocks, electrical wiring elements and their pre-assembly outside the installation area; checking the presence of embedded structures, openings, holes in building structures and building elements, embedded structures and selective devices on process equipment and pipelines, the presence of a grounding network; laying in the foundations under construction, walls, floors and ceilings of pipes and blind boxes for hidden wiring; route marking and installation of supporting and supporting structures for electrical and pipe wiring, actuators, devices.

At the second stage, it is necessary to carry out: laying pipe and electrical wiring according to established structures, installing panels, cabinets, consoles, instruments and automation equipment, connecting pipe and electrical wiring to them, individual tests.

3.3. Mounted devices and automation equipment for the electrical branch of the State Instrumentation System (SSE), panels and consoles, structures, electrical and pipe wiring to be grounded according to the working documentation, must be connected to the ground loop. If there are requirements of manufacturers, the means of aggregate and computer complexes must be connected to a special ground loop.

Installation of structures

3.4. The 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 (bases) should not be violated;

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

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

3.6. The supporting structures must be parallel to each other, as well as parallel or perpendicular (depending on the type of structures) to the building structures (bases).

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. Installation of boxes and trays should be carried out in enlarged blocks assembled in assembly and procurement workshops.

3.9. The fastening of boxes and trays to the supporting structures and their connection to each other must be bolted or welded.

When bolted, the tightness of the 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.

When connecting by welding, burn-through of boxes and trays is not allowed.

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

3.11. At the intersection of settlement and expansion joints of buildings and structures, as well as at outdoor 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. The 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 piping of automation systems (impulse, command, supply, heating, cooling, auxiliary and drainage according to the recommended Appendix 3), operating at an absolute pressure of 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 panels and consoles.

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, equipment, methods of work used during the installation of pipe wiring should ensure the possibility of installing the following pipes and pneumatic cables:

steel water and gas pipelines according to GOST 3262-75 ordinary and light with a conditional passage of 8; fifteen; 20; 25; 40 and 50 mm;

steel seamless cold-formed according to GOST 8734-75 with an outer diameter of 8; ten; fourteen; 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; eight; ten; fourteen; 16 and 22 mm with a wall thickness of at least 1 mm. For pipe wiring with pressure over 10 MPa (100 kgf / sq. cm), pipes with an outer diameter of 15 can be used; 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;

from aluminum and aluminum alloys according to 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 specifications of manufacturers 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 pipes made of polyethylene in accordance with GOST 18599-83 heavy with an outer diameter of 12; 20 and 25 mm;

polyvinyl chloride flexible according to the specifications of manufacturers 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 specifications of manufacturers (polyethylene tubes must have dimensions 6X1; 8X1 and 8X1.6 mm).

The choice of a specific assortment of pipes depending on the properties of the transported medium, the value of the measured parameters, 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 exposed to extreme heat or cold, shock or vibration.

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

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

3.19. The total width of a group of horizontal and vertical pipe wiring fixed on the same 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 wiring 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. Pipelines, 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 indicated in the working documentation, and in the absence of such instructions, the wiring must be laid with the following minimum slopes: impulse (see recommended Appendix 3) to pressure gauges for all static pressures, membrane or pipe draft pressure meters, gas analyzers - 1:50; impulse to steam, liquid, air and gas flow meters, level regulators, drain gravity oil pipelines of hydraulic jet regulators and drainage lines (see recommended Appendix 3) - 1:10.

The slopes of the heating (see recommended appendix 3) pipe wiring must comply with the requirements for heating systems. Pipe wiring requiring different slopes, fixed on common structures, should be laid along the largest slope.

3.22. The working documentation should provide for measures to compensate for thermal elongation of pipe wiring. For cases when the working documentation provides for self-compensation of temperature elongations of pipe wiring at turns and bends, it should indicate at what distances from the turn (bend) the pipes should be fixed.

3.23. Metal pipe wiring at the points of transition through the expansion joints of buildings must have U-shaped compensators. Places for installing compensators and their number should be indicated in the working documentation.

3.24. On piping laid with a slope, U-shaped compensators, ducks "and similar devices should be located so that they are the highest or lowest point of the piping and the possibility of accumulation of air (gas) or condensate in them is excluded.

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

3.26. The installation of pipe wiring should ensure: the strength and tightness of the wiring, pipe connections to each other and their connections to fittings, instruments and automation equipment; reliability of fixing pipes on structures.

3.27. Fastening of pipe wiring to supporting and supporting structures should be carried out with normalized fasteners; fastening of pipe wiring by welding is prohibited. Fastening must be carried out without violating the integrity of the pipes.

3.28. It is not allowed to fix pipe wiring on the outer side of the boards, housings of devices and automation equipment.

It is allowed to fix pipe wiring on the process equipment being dismantled at selective devices, but not more than at two points.

Fixing pipe wiring on non-disassembled process equipment is allowed upon agreement with the customer. Pipe wiring in places of approach to the equipment must have detachable connections.

3.29. Pipe wiring must be fixed:

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

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

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

on both sides of the U-shaped compensators at a distance of 250 mm from their bend when installing the compensators at the points of transition of pipe wiring through expansion joints in the walls.

3.30. Changing the direction of the pipe runs should generally 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, crumples, etc. on the bent part of the pipes;

b) the ovality of the section of pipes in the places of bending is allowed no more than 10%.

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

for cold-bent polyethylene pipes:

PNP - not less than 6Dn, where Dn - outer diameter; PVP - not less than 10Dn;

for hot-bent polyethylene pipes - at least 3Dn;

for PVC plasticized pipes (flexible) bent in a cold state - at least 3Dn;

for pneumatic cables - not less than 10Dn;

for cold-bent steel pipes - at least 4Dn, and for hot-bent pipes - at least 3Dn;

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

for annealed pipes made of aluminum and aluminum alloys when they are bent in a cold state - at least 3Dn.

3.33. The connection of pipes during installation is allowed to be carried out both with one-piece and detachable connections. When connecting pipe wiring, it is prohibited to eliminate gaps and misalignment of pipes by heating, stretching or bending pipes.

3.34. The connection of pipe wiring to embedded structures (see recommended Appendix 3) of process equipment and pipelines, to all devices, automation equipment, switchboards and consoles must be carried out with detachable connections.

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

3.36. It is forbidden 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 fixing points.

3.38. When connecting pipes in group pipe wiring, the connections must be offset to allow the tool to work when installing or dismantling pipe wiring.

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

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

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

3.41. All piping must be marked. The markings applied to the tags must correspond to the marking of the pipe wiring given in the working documentation.

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

Steel pipes designed to protect pipe lines must be painted on the outside. Plastic pipes cannot be painted. Non-ferrous metal pipes are painted only in cases specified in the working documentation.

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

3.44. Plastic pipes and pneumatic cables should be laid along fireproof structures and laid freely along them, without tension, taking into account the change 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 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 piping should be ensured by the rational arrangement of movable (free) and fixed (rigid) fasteners and curved elements of the piping itself (bends, ducks, gasket "snake").

3.46. The arrangement of fixed fasteners that do not allow the movement of wires 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.

Fasteners must be fixed at junction boxes, cabinets, shields, etc., as well as in the middle of the sections between two turns.

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

3.47. Fastening of plastic pipes and pneumatic cables on bends is not allowed.

The top of the turn for horizontal laying should 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 fixed with movable fasteners.

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

3.49. Plastic pipes and pneumatic cables laid openly in places of possible mechanical impacts 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 wiring.

Pipe sections up to 1 m long for instruments, actuators and automation equipment installed on process pipelines and apparatuses may not be protected.

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

3.51(K). Plastic pipes and pneumatic cables in boxes and trays laid horizontally must be laid freely without fasteners. When laying in boxes and trays laid vertically, pipes and cables must be fixed 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 fixed in accordance with clause 3.47 of these rules.

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

As a rule, it is not allowed to lay armored pneumatic cables in ducts.

Pipes and cables are led out of the box through holes in its wall or bottom. Plastic bushings must be installed in the holes.

3.52. The distances between the attachment points of plastic pipes or bundles of them should be no more than those indicated in Table. one.

3.53. Pipelines made of plastic pipes, through which liquids or wet gases are transported, as well as plastic pipes at an ambient or filling medium temperature of 40 ° C and above, should be laid in horizontal sections on solid supporting structures, and in vertical sections, the distance between the fasteners should be reduced twice as compared with those indicated in the table. one.

Table 1

3.54. When connecting to instruments, equipment and bulkhead connections (taking into account the permissible bending radii), plastic pipes must have a margin of at least 50 mm in case of possible damage during repeated rewiring 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 must be formed only under the action of the own weight of the pneumatic cable and must not exceed 1% of the span length.

Fastening with horizontal laying should be carried out through one support.

3.56. When installing metal pipe wiring, it is allowed to use any welding methods that ensure high-quality performance of 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 of pipe welding, 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 Minmontazhspetsstroy. Types and structural elements of welds must comply with GOST 16037-80.

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

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

In appearance, solder joints should have a smooth surface. Influxes, captivity, shells, foreign inclusions and non-drinking are not allowed.

3.60. Fastening of single metal pipe wiring must be carried out on each support.

Additional installation requirements
oxygen tubing

3.61. Work on the installation of oxygen piping should be carried out by personnel who have studied the special requirements for performing these works.

3.62. During the installation and welding of the pipeline, contamination of its inner surface with fats and oils should be excluded.

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

Pipes, fittings and connections intended for pipelines filled with oxygen must be provided with a document confirming their degreasing and suitability for installation.

3.64. With threaded connections, it is prohibited to wind flax, hemp, as well as lubrication with red lead and other materials containing oils and fats.

Additional requirements for the installation of pipe wiring
for pressure over 10 MPa (100 kgf / sq. cm)

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

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

3.66. All elements of pipe wiring for pressure over 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 report is drawn up for pipes, fittings, pipeline parts, etc.

(J) Paragraphs 3.67-3.74 are deleted.

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

Testing of pipe wiring

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

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

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

3.78. Command piping filled with air at operating pressure Pp

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 wiring and pneumatic cables must be carried out at a temperature of the test medium not exceeding 30 ° C.

3.81. Testing of plastic pipe wiring is allowed to be carried out no earlier than 2 hours after the last pipe welding.

3.82. Before testing for strength and density, all pipe wiring, 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) purge, and if specified in the working documentation - flushing.

3.83. Purge of pipe wiring should be carried out with compressed air or inert gas, dried and free from oil and dust.

Pipelines for steam and water can be blown and washed with a working medium.

3.84. Purge of pipe wiring should be carried out with a pressure equal to the working one, 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 schemes for purge of process pipelines agreed with the customer.

Purge should be carried out for 10 minutes until clean air appears.

Purge of pipe wiring operating at overpressure up to 0.1 MPa (1 kgf/sq.cm) or absolute pressure from 0.001 to 0.095 MPa (from 0.01 to 0.95 kgf/sq.cm) should be carried out with air pressure not exceeding 0.1 MPa (1 kgf / sq. cm).

3.85. Flushing of pipe wiring should be carried out until a steady appearance of clean water from the outlet pipe or drain device of the washed pipe wiring.

At the end of flushing, the piping must be completely emptied of water and, if necessary, purged with compressed air.

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

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

Plugs or blind lenses with shanks must be installed on piping intended for operation at Pp >/= 10 MPa (100 kgf / sq. cm).

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

3.88. During hydraulic tests, water shall be used as the test fluid. The water temperature during testing should not be lower than 5°C.

3.89. For pneumatic tests, air or an 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 pressure rises are recommended:

The pressure at the 1st and 2nd stages is maintained for 1-3 minutes; during this time, according to the readings of the manometer, the absence of a pressure drop in the piping is established.

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

On pipelines with a pressure Рр >/= 10 MPa, the test pressure is maintained for 10-12 minutes.

Pressurizing the 3rd stage is a test of strength.

The working pressure (4th stage) is maintained for the time necessary for the final inspection and detection of defects. The 4th stage pressure is a density test.

3.91. Defects are eliminated after the pressure in the piping is reduced to atmospheric.

After the defects are eliminated, the test is repeated.

3.92. Pipe wiring is considered fit for service if during the strength test there was no pressure drop on the pressure gauge and no leaks were found in the welds and joints during the subsequent tightness test.

At the end of the test, an act must be drawn up.

3.93. Pipelines filled with combustible, toxic and liquefied gases (except for gas pipelines with pressure 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), for an absolute pressure from 0.001 to 0.095 MPa (from 0.01 to 0.95 kgf / sq. cm) must be subjected to additional tests for density with the determination of pressure drop.

3.94. Before testing the tubing for tightness with the determination of the pressure drop, the tubing must be flushed or blown.

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

3.96. The density test with the determination of the pressure drop is carried out with air or an inert gas at a test pressure equal to the working pressure (Рpr \u003d Рр), 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 with the following pressure:

a) pipelines filled with combustible, 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 the additional test for density and the holding time under test pressure is set in the working documentation, but must be at least for pipelines:

3.98. Pipe wiring is considered to have passed the test if the pressure drop in them does not exceed the values ​​\u200b\u200bspecified in Table. 2.

table 2

The specified norms refer to pipe wiring with a conditional passage of 50 mm. When testing pipe wiring with other conditional passages, the rate of pressure drop in them is determined by the product of the above values ​​​​of pressure drop by a coefficient calculated by the formula

3.99. At the end of the tests of pipe wiring for density with the determination of the pressure drop during the test, an act must be drawn up.

3.100. When conducting pneumatic tests, the safety requirements set forth in SNiP III-4-80 and the "Rules for the Design and Safe Operation of Pipelines for Combustible, Toxic and Liquefied Gases" (PUG-69) must be observed.

Wiring

3.101. Installation of electrical wiring of automation systems (circuits of measurement, control, power supply, signaling, etc.) with wires and control cables in boxes and trays, in plastic and steel protective pipes, on cable structures, in cable structures and on the ground; installation of electrical wiring in explosion and fire hazardous areas, installation of grounding (grounding) must comply with the requirements of SNiP 3.05.06-85, taking into account the specific features of the installation of automation systems set forth 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, clamp assemblies should, as a rule, be soldered if the design of their terminals allows this (non-separable contact connection).

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

Single-wire copper conductors of wires and cables with a 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 cross-sections - using lugs or directly under the screw or bolt. At the same time, 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 a pin; the ends of stranded conductors (rings, pins) must be soldered, the pin ends can be crimped with pin tips.

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

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

Connection of single-wire conductors of wires and cables (for screw or soldering) is allowed only to fixed elements of devices and apparatuses.

The connection of conductors of wires and cables to devices, apparatuses and automation equipment having output devices in the form of plug connectors must be carried out by means of stranded (flexible) copper wires or cables laid from clamp assemblies or junction boxes to devices and automation equipment.

Collapsible and non-separable connections of copper, aluminum and aluminum-copper conductors of wires and cables with leads and clamps of devices, devices, clamp assemblies must be carried out 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 with each other, with pull boxes, etc. in rooms of all classes should be carried out with standard threaded connections.

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

3.104. The mounted electrical wiring of automation systems must be subjected to an external inspection, which establishes the 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 an insulation resistance test.

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

During insulation resistance measurements, 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, an act is drawn up.

Shields, racks and consoles

3.106. Boards, cabinets and consoles must be handed over by the customer in a finished 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 assembling and installing shields, cabinets and consoles on site.

3.107. Separate panels, consoles and cabinets must be assembled into composite panels (operator's, dispatcher's) of any configuration using detachable connections.

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

3.108. Shields, 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 fixing the support frames of the shields to the embedded structures is one-piece, carried out by welding.

Boards, cabinets and consoles during installation must be aligned with a plumb line, and then fixed.

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 tilt angle of the mnemonic diagram specified in the working documentation must be maintained within the tolerances specified in it.

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

3.110. In order to increase the level of industrialization of installation work, as a rule, industrial automation rooms should be used, including complete operator rooms (KOP) and complete sensor points (CPD). Industrial automation premises must be delivered to the facility with mounted panels, cabinets, consoles, pipe and electrical wiring. At the facility, work should only be performed on connecting external pipe and electrical wiring.

3.111. Terminations and connections of pipe and electrical wiring introduced into panels, 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 means of automation

3.112. Devices and automation equipment, checked with the execution of the relevant protocols, should be accepted for installation.

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

3.113. Testing of devices and automation equipment is carried out by the customer or specialized organizations involved by him, performing work on setting up devices and automation equipment using the methods adopted in these organizations, taking into account the requirements of the instructions of the State Standard and manufacturers.

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

Together with devices 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 devices and automation equipment and their relative position should be carried out according to the working documentation. Their installation should ensure the accuracy of measurements, free access to the instruments and their shut-off and adjustment devices (taps, valves, switches, adjustment knobs, etc.).

3.116. In places where devices and automation equipment are installed that are inaccessible for installation and maintenance, the construction of stairs, wells and platforms must be completed before installation begins 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. Fixing devices and automation equipment to metal structures (shields, cabinets, stands, etc.) should be carried out in the ways provided for by the design of devices and automation equipment and the parts included in their kit.

If fasteners are not included in the set of individual devices and automation equipment, then they must be fixed with normalized fasteners.

In the presence of vibrations at the installation sites of devices, threaded fasteners must have devices that exclude their spontaneous unscrewing (spring washers, lock nuts, cotter pins, etc.).

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

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

3.122. Sensitive elements of liquid thermometers, temperature alarms, manometric thermometers, thermoelectric converters (thermocouples), resistance thermocouples should, as a rule, be located in the center of the measured medium flow. At pressures over 6 MPa (60 kgf/sq.cm) and steam flow rates of 40 m/s and water flow rates of 5 m/s, the depth of immersion of 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 transducers (thermocouples) and resistance thermocouples must fit snugly against the controlled surface.

Before installing these devices, the place of their contact with pipelines and equipment must be cleaned of scale and cleaned to a metallic sheen.

3.124. Thermoelectric converters (thermocouples) in porcelain fittings may be immersed in the 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 indicated 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 bay must be tied in three places with non-metallic bandages 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 should define a constant correction to the instrument readings.

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

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

3.129. Separation vessels are installed according to the standards or working drawings of the project, as a rule, near the points of sampling of impulses.

Separation vessels must be installed so that the control openings of the vessels are 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 measurable level. The gas or air pressure in the measuring tube must allow the gas (air) to pass through the tube at the maximum liquid level. The flow rate of gas or air in piezometric level gauges must be adjusted to a value that provides coverage of all losses, leaks and the required speed of the measuring system.

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

3.132. When indicating and recording instruments are installed on the wall or on racks attached to the floor, the scale, diagram, shut-off valves, adjustment and control elements of pneumatic and other sensors should be at a height of 1-1.7 m, and the control valves of the shut-off valves - in one plane with the scale of the device.

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

3.134. All automation devices and means installed or built into process apparatuses and pipelines (restriction and selective devices, meters, rotameters, level gauge floats, direct-acting regulators, etc.) must be installed in accordance with the working documentation and with the requirements specified in the mandatory annex 5.

Optical cables(K)

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

3.136. The laying of optical cables is carried out in accordance with the working documentation in ways similar to those adopted when 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 wiring of automation systems.

Single- and double-fiber cables must not be routed through cable trays.

It is forbidden to use ventilation ducts and shafts and escape routes for laying an optical cable.

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

3.138. When pulling an optical cable, the means of tension should be fastened behind the power element, using strain limiters and anti-twist devices. Pulling forces must not exceed the values ​​specified in the specifications for the cable.

3.139. The laying of an optical cable must be carried out under the climatic conditions specified in the technical specifications for the cable. It is not allowed to lay an optical cable at an air temperature below minus 15°C or a relative humidity of more than 80%.

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

3.141. The optical cable should be fastened to supporting structures during vertical laying, as well as when laying directly on the surface of the walls of the premises - along the entire length after 1 m; with horizontal laying (except for ducts) - in the places of rotation.

At bends, the optical cable must be fixed 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 specification.

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

3.142. The installed optical cable should be monitored by measuring the attenuation of signals 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).

4. INDIVIDUAL TESTS

4.1. For acceptance by the working commission, automation systems are presented in the amount provided for by the working documentation, and which have passed individual tests.

4.2(K). During individual testing, you should check:

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

b) pipe wiring for strength and density;

c) insulation resistance of electrical wiring;

d) measurements of attenuation of signals in individual fibers of the mounted optical cable according to a special instruction.

4.3. When checking the installed systems for compliance with the working documentation, the compliance of the installation sites of devices and automation equipment, their types and technical characteristics with the equipment specification, compliance with the requirements of this SNiP and operational instructions for installation methods of devices, automation equipment, panels and consoles, other means of local APCS systems, electrical and piping.

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 Sec. 3.

4.5(K). After completion of work on individual testing, an act of acceptance of the installed automation systems is drawn up, to which documents are attached on positions 4-12, 16, 21 of Appendix 1.

4.6(K). It is allowed to transfer installation works for adjustment by separate systems or separate parts of the complex (for example, control rooms and operator rooms, etc.). The delivery of the mounted automation systems is formalized by an act (see mandatory Appendix 1).

5. COMMISSIONING

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

5.2. In the course of commissioning, the requirements of the design and technological regulations of the facility being put into operation, the Rules for the Installation of Electrical Installations (PUE), the Rules for the Technical Operation of Consumer Electrical Installations (PTE) and the Safety Rules for the Operation of Consumer Electrical Installations (PTB), approved by the Ministry of Energy of the USSR.

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 the automation systems necessary for testing or testing process equipment in accordance with the design and specifications of manufacturers.

5.4. By the beginning of work on the adjustment of automation systems, the customer must bring into working condition 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, as well as 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 elements of the equipment.

5.7. To check instruments and automation equipment, the customer must:

deliver devices and automation equipment to the production room to the place of inspection;

transfer to the commissioning organization for the period of testing devices and automation equipment spare parts and special tools supplied by the manufacturers of the tested devices and automation equipment, as well as verification equipment and special tools supplied as a set.

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

Dismantled devices and means of automation, without technical documentation (passports, certificates, etc.), with changes not reflected in the technical specifications, are not accepted for testing. Upon completion of the test, devices and automation equipment are transferred for installation according to the act.

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

In doing so, the following is carried out:

checking the installation of devices and automation equipment for compliance with the requirements of the instructions of manufacturers of devices 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 correctness of marking, connection and phasing of electrical wiring;

phasing and control of the characteristics of actuators;

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

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

preparation for inclusion and inclusion in the operation of automation systems to ensure individual testing of technological equipment and adjustment of the settings of the equipment of the systems in the process of their operation;

registration of production and technical documentation.

5.10. The necessary disconnection or switching of pipe and electrical wiring associated with the verification or adjustment of individual devices or automation equipment is carried out by the commissioning organization.

5.11. The inclusion of automation systems in the work should be carried out only when:

the absence of violations of the requirements for the operating conditions of devices and automation equipment, communication channels (in terms of temperature, humidity and aggressiveness of the environment, etc.) and safety;

the presence of the minimum required technological load of the automation object for determining and setting the settings for instruments and automation equipment, testing and commissioning automation systems;

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

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

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

determination of the compliance of the procedure for testing devices and elements of signaling, protection and control systems with the algorithms of working documentation with the identification of the causes of failure or their "false" operation, setting the necessary values ​​for the operation of positional devices;

determination of the compliance of the flow capacity of shut-off and control valves with the requirements of the technological process, the correctness of the circuit breakers;

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

preparation for inclusion and inclusion in the work of automation systems to ensure comprehensive testing of process equipment;

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

testing and determining the suitability of automation systems to ensure the operation of equipment with a performance that meets the standards for the development of design capacities in the initial period;

analysis of the operation of automation systems in operation;

preparation of production documentation.

5.13. The works of the third stage are carried out after the completion of construction and installation works, 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. The removal of flow characteristics and the determination of the throughput of regulatory 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 control valves.

5.15. Correction of the values ​​of operation of elements and devices of alarm and protection systems established by the working documentation or other technological documentation should be made only after the new values ​​are approved by the customer.

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

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 the operating enterprise. The briefing is carried out by the customer's services in the amount established by the sectoral ministries; its conduct must be recorded in the safety log.

5.18. In the absence of specific requirements for the performance 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 the requirements for the performance indicators of automation systems, first of all, the requirements for the quality and reliability indicators of the system should be set.

5.19. All switching modes of operation of technological equipment in determining the actual characteristics of the automation object must be made by the customer. Switching on and off of automation systems should 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 devices and automation equipment or in industry-specific rules for acceptance into operation of completed facilities, approved by the relevant ministries and departments of the USSR in agreement with the USSR Gosstroy.

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

5.22. The results of the commissioning work are documented in a protocol in which the assessment of the system operation, conclusions and recommendations are recorded. Implementation of recommendations for improving 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 separately adjusted systems, and in a complex for automated installations, units of process equipment and workshops.

When automation systems are put into operation for separately adjusted systems, an act of acceptance into operation 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, devices and means of automation and values ​​of settings of automatic control (regulation) systems;

programs and test reports of automation systems;

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

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

5.24. Completion of commissioning works is fixed by an act of acceptance of automation systems into operation in the scope provided for by the project.

APPENDIX 1(K)

Mandatory

PRODUCTION DOCUMENTATION,
DURING INSTALLATION AND ADJUSTMENT
AUTOMATION SYSTEMS

APPROVE

_____________________
_____________________
(customer)

____________№__________

G. ____________________

Commissioning
automation systems

Reason: presentation for commissioning of systems
automation ____________________________________________________________

(name of commissioning organization)

Compiled by the commission: _______________________________________________

(representative of the customer, last name, acting, position)

(representatives of the commissioning organization, names, acting, positions)

The commission carried out work to determine the suitability of automatic
preparation for operation _____________________________________________

(name of automation systems)

It is established that the above automation systems:

1. We ensured the uninterrupted operation of process equipment in
specified mode during the period of complex testing for _________
with a positive result. (time)

2. Conform to the technical requirements of _________________________

(name of the normative document, project)

Based on the data received, the commission considers:

1. Take into operation the automatic systems submitted for delivery
zation.

2. Commissioning works were completed with an estimate of ____________________

Attached to the act: 1._________________

2._________________

3._________________

Customer Commissioning organization

_____________________ ___________________________
(signature) (signature)

GROUPS AND CATEGORIES OF PIPING OF AUTOMATION SYSTEMS
DEPENDING ON FILLING MEDIUM AND WORKING PRESSURE

TERMS AND DEFINITIONS FOR INSTALLATION
AUTOMATION SYSTEMS

1. Embedded structure (embedded element) - a part or assembly unit that is integrally built into building structures (channel, angle, sleeve, branch pipe, plate with sleeves, boxes with a sand gate, suspended ceiling structures, etc.) or into technological devices and pipelines (lugs, fittings, pockets and sleeves for the device, etc.).

2. Pipe wiring - a set of pipes and pipe cables (pneumatic cables), connections, connections, protective devices and fittings.

3. Impulse communication line - pipe wiring connecting the selective device with a control and measuring device, sensor or regulator. It is designed to transmit the effects of a controlled or regulated process environment to sensitive organs of instrumentation, sensors or regulators, directly or through separation media.

Impulse communication lines also include capillaries of manometric thermometers and temperature controllers, connecting temperature-sensitive elements (thermoballoons) with manometric measuring devices of instruments and regulators.

4. Command communication line - pipe wiring connecting individual functional blocks of automation (sensors, switches, secondary measuring instruments, converters, computing, regulating and control devices, actuators). It is designed to transmit command signals (air, water, oil pressure) from transmitting units to receiving ones.

5. Power line - pipe wiring connecting measuring instruments and automation equipment with power sources (pumps, compressors and other sources). It is designed to supply instruments and automation equipment (sensors, converters, computing, regulating and control devices, amplifiers, positioners) with liquid (water, oil) or gas (air) with excess pressure varying within specified limits, used as carriers of auxiliary energy during processing and transmission of command signals.

6. Heating line - pipe wiring, through which heat carriers (air, water, steam, etc.) are supplied (and discharged) to heating devices of selected devices, measuring instruments, automation equipment, shields and flows of impulse, command and other pipe wiring.

7. Cooling line - piping, through which coolants (air, water, brine, etc.) are supplied (and discharged) to the cooling devices of selected devices, sensors, actuators and other automation equipment.

8. Auxiliary line - pipe wiring, through which:

a) protective liquids or gases are supplied to the impulse communication lines, creating counter flows in them to protect against aggressive influences, blockage, clogging and other phenomena that cause damage and failure in the operation of selective devices, measuring instruments, automation equipment and the impulse lines themselves;

b) are supplied to instruments, regulators, impulse communication lines of liquid or gas for periodic flushing or purging them during operation;

c) a parallel flow of a part of the product taken from the process apparatus or pipeline for analysis is created in order to speed up the supply of the sample to a measuring device remote from the sampling site (for example, to an analyzer of liquid petroleum products, etc.).

9. Drainage line - pipe wiring, through which purge and flush products (gases and liquids) are discharged from instruments and regulators, impulse and command communication lines, auxiliary and other lines to the places designated for this (special containers, atmosphere, sewerage, etc.). ).

10. Pipe block - a certain number of pipes of the required length and configuration, laid and fixed in a certain position and fully prepared for connection with adjacent piping nodes.

LIST OF MAIN REGULATORY AND TECHNICAL DOCUMENTS
FOR PROCESS PIPING

APPENDIX 5

Mandatory

INSTALLATION REQUIREMENTS
ON TECHNOLOGICAL EQUIPMENT AND PIPELINES

1. Installation of constriction devices in pipelines must be carried out in accordance with working drawings and standards in compliance with the "Rules for measuring the flow of gases and liquids by standard constriction devices" approved by the State Standard.

2. Before installing the narrowing device, a reconciliation with the design data and the picking list must be made:

a) pipeline diameter and installation location;

b) brand of material of the narrowing device;

c) the direction of flow and the correctness of the designation "plus" and "minus" on the body of the narrowing device.

3. Installation of the narrowing device must be carried out in such a way that in working condition the designations on its body are accessible for inspection.

If this requirement is not met, a plate is attached to the constriction device, on which the data placed on the body of the constriction device are applied.

4. Restriction devices installed on pipelines must be installed in compliance with the basic technical requirements:

a) the lengths of straight sections of the pipeline specified in the working documentation before and after the narrowing device must be maintained;

b) the installation of flanges must be carried out so that the planes of the flanges are parallel to each other and perpendicular to the axis of the pipelines.

The distance between the planes of the flanges must be equal to the construction length of the narrowing device, taking into account the space for gaskets on both sides;

c) the pipeline in front of the narrowing device must be cleaned of dirt, traces of welding and internal protrusions that distort the shape of the flow; on the inner surface of a pipeline section with a length equal to two of its outer diameters, in front of and behind the narrowing device, there should not be any ledges, as well as irregularities (dents, welding beads, etc.) noticeable to the naked eye;

d) the concentricity of the pipeline and the narrowing device, as well as the perpendicularity of the end face of the narrowing device to the axis of the pipeline, must be ensured;

e) the direction of the arrow indicated on the narrowing device must coincide with the direction of the flow of the substance filling the pipeline; the sharp edge of the diaphragm, the rounded part of the nozzle or Venturi pipe must be directed against the flow of the measured medium;

f) sealing gaskets should not protrude into process pipelines.

5. Embedded structures for installation of selective pressure devices and selections from narrowing devices on horizontal and inclined pipelines should be located:

a) on gas and air pipelines - from above;

b) on liquid and steam pipelines - on the side.

6. Flow meters (meters, rotameters, etc.) built into process pipelines must be installed in compliance with the following basic requirements:

a) installation of meters is carried out after installation is completed and the pipeline is thoroughly cleaned; testing of the pipeline and the meter is carried out simultaneously;

b) high-speed meters should be installed on straight sections of pipelines in the places indicated in the project;

c) the planes of the flanges must be parallel to each other and perpendicular to the axis of the pipeline.

7. Technological pipelines at the installation sites of rotameters, volumetric and high-speed meters must have bypass lines with appropriate shut-off valves.

8. If the caliber of the meter is smaller than the diameter of the pipeline, the meter must be installed between two conical adapter pipes. In this case, shut-off valves must be installed on the main pipeline before and after the branch pipes. The use of adapter flanges is prohibited.

9. The floats of all types of level gauges must be installed so that the movement of the float and the cable or rod occurs without rubbing. The float stroke must be equal to or slightly greater than the maximum level measurement.

10. Installation of direct-acting temperature and pressure regulators on process pipelines must be carried out in such a way that the direction of the arrows on their bodies corresponds to the direction of movement of the measured medium.

11. The length of the straight sections of the pipeline before and after the control valves must correspond to that specified in the project.

12. If the nominal diameter of the control valve does not correspond to the diameter of the pipeline, the valve must be installed using conical transition pipes.

The use of adapter flanges is prohibited.

13. All devices and automation equipment installed or built into technological devices and pipelines - direct-acting regulators, narrowing devices, control valves, meters, etc. - should be installed after cleaning and flushing devices and pipelines before their hydraulic strength test and density, on oxygen pipelines - after degreasing.

The text of the document is verified by:
official publication
Gosstroy of the USSR - M.: CITP, 1986

EDITION OFFICIAL

USSR STATE COMMITTEE

CONSTRUCTION

DEVELOPED GPI (M. L. Vitebsky - theme leader, V. F. Valetov, R. S. Vinogradova, Ya. V. Grigoriev, A. Ya. Minder, N. N. Pronin).

INTRODUCED by the USSR Minmontazhspetsstroy.

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

With the introduction of SNiP 3.05.07-85 "Automation Systems" loses the sipu SNiP III-34-74 "Automation System".

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

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

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

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

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

1. General Provisions

1.1. During the 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- 82*.

1.2. Work on the installation of automation systems must be carried out in accordance with the approved design and estimate documentation, the project for the production of works (PPR), as well as with the technical documentation of manufacturers.

1.3. Installation of instruments and automation equipment with the nodal method of construction and the complete-block method of installation of technological equipment and pipelines, carried out in accordance with SNiP 3.05.05-84, should be carried out in the process of pre-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 (POS) in terms of performing installation work using complete-block and nodal methods, arranging special rooms intended for automation systems (control rooms, operator rooms, equipment rooms, sensor rooms, etc. . p.), advancing the timing of 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 Sec. 4 of these rules, and signing the act of acceptance of the installed automation systems in the scope of the working documentation.