Automation Systems SNIP 3.05.07-85

Building Regulations AUTOMATION SYSTEMS SNIP 3.05.07-85 Official publication USSR State Committee for Construction DESIGNED GPI Proektmontazhavtomatika Minmontazhspetsstroya USSR (ML Vitebsk - theme leader, VF Jacks, R. S. Vinogradov , YV Grigoriev, A. J. Minder, N. Pronin). ENTERED Minmontazhspetsstroya USSR. PREPARED TO APPROVAL Glavtehnormirovaniem USSR State Construction (BA Sokolov). With the introduction of SNIP 3.05.07-85 "Automation Systems" lose sipu SNIP III-34-74 automation system. " Agree with the USSR Ministry of Health (letter dated 24 December 1984 № 122-12/1684-4), USSR State Technical Supervision (letter dated February 6, 1985 № 14-16/88). USSR State Committee for Construction (USSR State Committee for Construction) Building Regulations Automation SNIP SNIP 3.05.07-85 Instead III-34-74 of these rules and regulations apply to the manufacture and acceptance of work on installation and commissioning of automation systems (monitoring, control and automatic control) processes and engineering equipment for new construction, expansion, renovation and modernization of existing facilities, buildings and constructions industries. These rules do not apply to assembly: automation of special objects (nuclear installations, mines, enterprises for production and storage of explosives, isotopes); signaling systems of rail transport; communications and signaling systems, automatic fire and smoke; devices using radioisotope methods for measuring ; instruments and automation, built-in tools, machines and other equipment supplied by the manufacturer. Rules establish requirements for the organization, production and acceptance of work on assembling devices, automation equipment, switchboards, control panels, modular computing systems and automated process control systems (APCS), electrical wiring and piping, etc., as well as setting up mounted automation systems. The rules must be respected by all organizations and enterprises involved in the design, installation and commissioning of automation systems. 1. GENERAL PROVISIONS 1.1. In the production of works on installation and commissioning of automation systems to the requirements of this rule, SNIP 3.01.01-85, SNIP III-3-81, SNIP III-4-80 and agency regulations, approved in the manner prescribed 01/01/2001 snip- 82 *. Made by the Ministry of erection and special construction works of the USSR approved the decision of the USSR State Committee for Construction of October 18, 1985 № 175 Time entry into force 1 July 1986 1.2. Work on installation of automation systems must be in accordance with the approved design and estimate documentation, the project of works (BPD), as well as with the technical documentation by the manufacturer. 1.3. Installation of instruments and automation equipment at the hub construction and method of complete-block method of installation of process equipment and piping held in accordance with SNIP 3.05.05-84, should be carried out in the Pre-assembly production lines, units and blocks. 1.4. The general contractor must involve an organization offering installation of automation systems, to review the project for construction (PIC) of the installation, the complete-block and nodal methods, the special layout of rooms intended for automation systems (dispatcher, operator, hardware halls, rooms of sensors and m . etc.), advanced timing of their construction and transmission for installation. 1.5. Upon delivery of the automation system must issue documentation in accordance with the mandatory annex 1 of these rules. 1.6. Completion of the installation of automation systems is the completion of individual tests carried out in accordance with Sec. 4 of these rules, and the signing of the act of acceptance assembled automation systems in the volume of documentation. 2. PREPARING FOR THE PRODUCTION OF MECHANICAL WORK GENERAL REQUIREMENTS 2.1. Installation of automation systems must be preceded by training in accordance with SNIP 3.01.01-85 and these rules. 2.2. As part of the overall organizational and technical training should be determined by the customer and agreed with the contractor and the installation contractor: a) the conditions of the object of acquisition devices, automation tools, products and materials delivery to the customer, providing for the delivery of the technological unit. node, line, and b) a list of devices, automation equipment, modular computing systems and process control system mounted with the assistance of contract supervision staff of the manufacturer; c) the conditions of transportation units panels, consoles, instrument panel installations, pipe blocks to the installation site. 2.3. In preparing the installation company for the production of works should be: a) obtained by the working documentation, and b) developed and approved the project works; c) made acceptance of construction and technological readiness of the object-to-install automation systems, d) made acceptance of the equipment (equipment, automation equipment, switchboards, control panels, modular computing systems, and ACS), products and materials from the customer and the contractor, and e) made Pre-assembly units and blocks e) the prescribed rules and regulations of labor protection measures and fire safety. 2.4. Prior to the installation of automation systems installation contractor in conjunction with the general contractor and the customer must be addressed the following questions: a) anticipatory set period of construction of special facilities designed for the automation systems that provide timely individual tests administered in place of process lines, units and blocks, and b) are defined technological lines, nodes, blocks, and the timing of their transfer to the individual test after installation of automation systems, and c) provide the necessary production studios, home and office space, equipped with heating, lighting and telephones, and d) provided for the use of major construction machinery at the disposal contractor (vehicles, lifting and handling machinery, etc.) to move large units (blocks boards, panels, pipes, etc, etc.) from the production database installation companies to install them in a design position at a construction site, and e) developed recommendations and charts rise of large sites for design marks, and their movement through the mounting apertures; e) provides permanent and temporary networks that lead to the objects of electricity, water, compressed air, means for connecting the equipment and tools; g) were provided in accordance with the project (working draft) activities to protect instruments and automation equipment, switchboards, control panels, piping and electrical wiring from the influence of precipitation, groundwater and low temperatures, from dirt and damage, and computer equipment - and from static electricity. 2.5. In the working document automation systems, to take over the work, fitting the organization must verify the following: a) the linkages between the technological, electrical, plumbing and other working documents, and b) binding in the working drawings, instruments and automation equipment supplied by the respective manufacturers complete with technical equipment c) Respect for the high factory and assembly equipment availability, best practices, installation works, the maximum transfer labor-intensive work in the assembly and procurement workshops; d) specify categories of tube wiring in accordance with the recommended application 2, q) the presence of explosive or fire zones and their boundaries , categories, groups, and the names of explosive mixtures, the installation location of dividing seals and their types, and e) availability of documentation in works on the assembly and test tube wiring to pressure over 10 MPa (100 kgf/cm2). 2.6. Acceptance of construction and technological readiness for installation of automation systems should be phased in selected parts of the finished object (dispatcher, operator facilities, technological components, nodes, lines, etc.). 2.7. Delivery of the object parts and materials organization, mounts an automation system to be implemented, usually in containers. ACCEPTANCE OF AN OBJECT BY INSTALLING 2.8. Prior to the installation of automation systems at the construction site, as well as in buildings and premises that must be submitted for assembly automation systems, should be performed construction work, provided a working document and the draft of the work. In the construction of buildings and structures (floors, ceilings, walls and foundations of equipment) in accordance with the architectural and construction drawings must be: Setting Out plotted axis and working elevation: Bonds set design (see Annex 3 recommended), under the panels, consoles, appliances , automation, etc., are made canals, tunnels, niches, grooves, embedded pipes for buried wires, apertures for the passage of piping and electrical wiring with the installation of these boxes, sleeves, sockets, frames and other embedded designs, established a platform for maintenance of instruments and automation equipment, by mounting openings for the movement of large units and blocks. 2.9. In the special rooms designed for automation systems (see Section 1.4), as well as production facilities in locations that are intended for mounting instruments and automation equipment should be finished construction and finishing work done dismantling of formwork, scaffolding and the scaffolding is not required for the installation of automation systems, as well as remove garbage. 2.10. Special facilities designed for automation systems (see Section 1.4) shall be equipped with heating, ventilation, lighting, air conditioning, if necessary, mounted on a permanent scheme to have windows and door locks. The premises shall be maintained at a temperature not below 5 ° C. After the surrender of these premises for the installation of automation systems is not authorized for construction works and installation of sanitary systems. 2.11. In rooms designed for mounting hardware and modular computing systems control system in addition to the requirements of Secs. 2.9; 2.10, must be mounted air conditioning system and carefully removed the dust. Paint chalky whitewash premises is prohibited. On the windows should be provided protection from direct sunlight (blinds). 2.12. By the beginning of assembly automation systems at the technological, sanitary and other types of equipment, the pipeline must be installed: mortgages and protective structures for the installation of primary equipment. Mortgages design for the installation of selected units of pressure, flow and level must end closures, instrumentation and automation, built-in pipes, ducts and equipment (Narrowing device, the volume and speed counters, flowmeters, flow sensors and flowmeters Concentration, level of all types of governing bodies, etc.). 2.13. At the facility in accordance with the technological, plumbing, electrical and other working drawings should be: laid pipelines and distribution networks with the installation of fittings for the selection of coolant to the heating device automation systems, as well as pipelines laid to drain coolant, equipment has been installed and routed backbone and breeders network to provide instruments and automation of electric power and energy (compressed air, gas, oil, steam, water, etc.), and laid pipes to drain energy, laid sewer network to collect sewage from the drainage tube wiring systems automation done grounding network, works on installation of automatic fire. 2.14. Lightning protection for network hardware and modular computing systems control system must meet the requirements of the enterprises - manufacturers of hardware. 2.15. Acceptance of an object is made an act of willingness to object to production to assembly automation systems according to the mandatory annex 1. TRANSFER IN installation of equipment, products, materials and technical documents 2.16. Transfer to installation of equipment, products, materials and technical documentation in accordance with the requirements of "Regulations on the contract 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 State Construction Committee of the USSR and the USSR State Planning Committee . 2.17. Accepted equipment, materials and products must comply with documentation and state standards and specifications, and have relevant certificates, technical certificates or other documents proving their quality. Pipes, fittings and connections for oxygen tube wiring should be degreased, which should be specified in the documentation to support this operation. When accepting the equipment, materials and products are checked for completeness, damage and defects, preservation of color and special coatings, safety seals, the availability of special tools and equipment supplied by the manufacturer. Details of pipe postings on pressure over 10 MPa (100 kgf/cm2) passed to assembly in the form prepared for assembly of products (pipes, shaped parts, fasteners, hardware, fittings, etc.) or collected in the assembly units, staffed specification detalirovochnyh drawings. Holes in tubing shall be equipped with plugs. On the product and assembly units with welds should be referred to acts or other documents confirming the quality of welds in accordance with SNIP 3.05.05-84. Removal of equipment defects found during acceptance shall be in accordance with the Regulations of the contract for capital construction. " 3. PRODUCTION ASSEMBLY WORK GENERAL REQUIREMENTS 3.1. Installation of automation systems should be in accordance with the working documents with the requirements of the manufacturing equipment, automation equipment, modular computing systems and provided technical specifications or operating instructions for this equipment. Work on the installation should be done by using an industrial small-scale mechanization, mechanized and electrified instruments and devices that reduce the use of manual labor. 3.2. Work on installation of automation systems should be implemented in two stages (stage): In the first step should be performed: the workpiece mounting structures, units and blocks, elements of wirings and Pre-assembly outside the assembly, check for mortgages structures, openings and holes in building structures and elements of buildings, structures and embedded devices on the selected process equipment and pipelines, the availability of a ground network tab under construction in foundations, walls, floors and ceilings of pipes and ducts for the Deaf anonymous postings; marking trails and the installation of support and support structures for electrical wiring and piping, actuators and devices. In the second stage must perform the following: laying of pipe and electrical wiring on set construction, installation of shields, cabinets, consoles, instruments and automation equipment, connection to him pipe and electrical wiring, individual trials. 3.3. Mounted instrumentation and automation of electrical devices branch of the State system (GPS), control panels and desks, construction, electrical wiring and piping to be ground according to documentation should be attached to the earthing system. If there are requirements of the manufacturing facilities of aggregate and computing systems need to be attached to the outline of a special terminal. MOUNTING STRUCTURES 3.4. Layout designs for the siting of instruments and automation equipment should be carried out in accordance with the documentation. When the markup should consider the following requirements: Installation of structures to be unduly disturbed hidden wiring, durability and fire resistance of building structures (bases) should be excluded the possibility of mechanical damage to the mounted instruments and automation equipment. 3.5. The distance between the supporting structures for horizontal and vertical sections of the route for laying pipe and electrical wiring and pneumatic cables should be made to documentation. 3.6. Supporting structures must be parallel to each other, as well as parallel or perpendicular to (depending on the type of construction) building structures (base). 3.7. Designs for devices, placed on the wall should be perpendicular to the wall. Rack mounted on the floor, must be reconciled to plumb or level. When you install the next two or more racks must be fastened to each other detachable connections. 3.8. Mounting boxes and trays should be executed integrated blocks, assembled in the assembly and procurement workshops. 3.9. Mounting boxes and trays to a supporting structure and connect them with each other must be bolted or welded. When bolted connection should be a tight fit boxes and trays with each other and supporting structures, as well as to ensure the reliability of electrical contact. When joining by welding is not permitted burn-through boxes and trays. 3.10. Location boxes after their installation should eliminate the possibility of accumulation of moisture. 3.11. At the intersections of sedimentary and expansion joints of buildings and structures, as well as outdoor installations boxes and trays must be compensating devices. 3.12. All designs must be painted according to the instructions in the documentation. 3.13. Passages of pipe and electrical wiring through the walls (exterior or interior) and the overlap should be carried out in accordance with the documentation. PIPE HARNESS 3.14. These rules apply to the installation and testing of pipe entries automation systems (pulse, command, supply, heating, cooling, support and drainage in accordance with the recommended application 3) operating at an absolute pressure of 0,001 MPa (0.01 kgf/cm2) to 100 MPa ( 1000 kgf/cm2). The rules do not apply to the installation of pipe within the posting boards and panels. 3.15. Assembly and test tube wiring automation systems must meet the requirements of SNIP SNIP 3.05.05-84 and present. 3.16. Used when installing pipe postings equipment, fixtures, equipment, production methods of work should be capable of mounting these tubes and pneumatic cables: water-gas steel according to GOST 3262-75 and common pulmonary nominal bore 8, 15, 20, 25, 40 and 50 mm; Steel seamless cold GOST 8734-75 OD 8, 10, 14, 16 and 22 mm wall thickness not less than 1 mm, seamless cold-and warm from corrosion-resistant steel according to GOST 9941-81 the outer diameter of 6, 8, 10 , 14, 16 and 22 mm wall thickness of not less than 1 mm. For pipe entries pressure over 10 MPa (100 kgf/cm2) can be applied pipe outer diameter 15, 25 and 35 mm copper to GOST 617-72 the outer diameter of 6 mm and 8 mm with wall thickness of not less than 1 mm of aluminum and aluminum alloys GOST 18475-82 outer diameter of 6 mm and 8 mm with wall thickness of not less than 1 mm of low density polyethylene (high pressure) on the technical conditions of the manufacturing facility outside diameter of 6 mm and wall thickness of 1 mm and an outer diameter of 8 mm and wall thickness 1 and 1.6 mm pressure polyethylene in accordance with GOST 18599-83 heavy outer diameter of 12, 20 and 25 mm flexible PVC according to technical factory inner diameter of 4 and 6 mm wall thickness of not less than 1 mm rubber GOST 5496-78 inner diameter of 8 mm with wall thickness of 1.25 mm, pneumatic and pnevmoelektricheskih with polyethylene tubing (pnevmokabeli) for technical reasons the manufacturing facility (polyethylene tubing shall be sized 6x1, 8x1 and 8x1, 6 mm). Selecting a particular assortment of pipes, depending on the properties of the transported medium, the values ??of measured parameters of the transmitted signals and the distances between connected devices must be in accordance with the documentation. 3.17. Tube wiring should be routed along the shortest distances between connected devices, parallel walls, ceilings and columns may further from the technological units and electrical equipment, with a minimum number of turns and intersections, in places accessible to the installation and maintenance, with no sharp fluctuations in ambient temperature, not subjected to strong heating or cooling, shock or vibration. 3.18. Tube posting of all appointments must be laid at a distance, providing easy installation and operation. In dusty areas tube wiring should be routed in one layer at a distance from the walls and ceilings, allowing to produce mechanical cleaning of dust. 3.19. The total width of the horizontal and vertical pipe entries and secured on one design, should not exceed 600 mm when serving the wiring on one side and 1200 mm - from both sides. 3.20. All tube wiring, which are filled environment with a temperature above 60 ° C, laid at a height of less than 2,5 m from the floor must be protected. 3.21. Tube postings, except filled with dry gas or air should be lined with a bias, which provides stock and removal of condensate gas (air), and have devices to remove them. The direction and magnitude of slopes shall be as specified in the documentation and the absence of such instructions wiring should be routed with the following minimum slopes: pulse (see Annex 3 recommended) to the gauge for all static pressures, diaphragm, or tube tyagonaporomeram, gas analyzers - 1:50; pulse to flow of steam, liquid, air and gas regulators levels flush gravity oil pipe hydraulic jet regulators and drainage lines (see Annex 3 recommended) -1:10. A heating gradients (see the recommended application 3) postings pipe must meet the requirements for heating systems. Tube wiring, requiring different slopes, fixed on the general constructions should be routed to the largest slope. 3.22. In the documentation should include measures to provide compensation for thermal elongation of pipe entries. For cases where the working documentation is provided self-compensation of temperature elongations tube postings on the turns and twists, it must be stated at what distances from the rotation (bending) should fix the pipe. 3.23. Metal tube wiring in places of transition through expansion joints of buildings should be U-shaped joints. Installation site compensators and their number should be listed in documentation. 3.24. On the tube wiring, installed with a bias, U-shaped compensators, and ducks and similar devices should be positioned so that they were the highest or lowest point of the tube wiring and prevent the possibility of accumulation in which air (gas) or condensate. 3.25. The minimum height Strip the outer tube wiring should be (in light): impassable in parts of the territory, where people pass - 2,2 m at the intersections with roads - 5 pm 3.26. Installation of pipe entries must provide: the strength and density of the postings, pipe joints between themselves and their connection to valves, instrumentation and automation, the reliability of fixing pipes on the building. 3.27. Fastening the tube postings on the support and supporting structures must be carried normalized fasteners, fastening pipe welding posting is prohibited. Fixing should be done without violating the integrity of the pipes. 3.28. You may not fixing tube wiring on the outside of the shields, the enclosure and automation. Non-binding tube wiring in the parsed process equipment at selected devices, but no more than two points. Fastening the tube postings on unparsed process equipment is allowed in agreement with the customer . Tube wiring in place is suitable to the equipment must have a detachable connection. 3.29. Tube wiring should be fixed: at distances less than 200 mm from the junction of parts (each side) on both sides of the turns (bends tubes) at a distance, providing self-compensation of thermal elongations tube wiring; on both sides of valves desilting and other vessels, if the valves and blood vessels are not fixed, when the length of the connector with a side of the vessel less than 250 mm pipe mount to the supporting structure is not made, on both sides of the U-shaped expansion joints at distances 250 mm from their bending when installing expansion joints in places of transition pipe entries through expansion joints in the walls. 3.30. Changing the direction of pipe entries, usually must be performed accordingly bend pipes. allowed to change the direction of the route of pipes to use standardized or normalized curved elements. 3.31. Methods of bending pipes are chosen installer. Curved pipe must meet the following basic requirements: a) on the curved part of the pipe should not be wrinkled, cracking, crushing, etc., and b) oval section tubes in bending the ground no more than 10%. 3.32 . The minimum radius of the inner curve of the bend pipe should be: for polyethylene pipe can be bent in the cold: TNG - at least 6Dn where Dn - OD; PVP - not less 10Dn; for polyethylene pipe can be bent while hot - at least 3Dn ; for plasticized polyvinyl chloride pipe (flexible) that can be bent in a cold state - at least 3Dn; for pnevmokabeley - at least 10Dn. for steel pipes can be bent in a cold state - at least 4Dn and bent in hot conditions - at least 3Dn ; for annealed copper tubing can be bent in a cold state - at least 2Dn; annealed tubes of aluminum and aluminum alloys in bending them into the cold - at least 3Dn. 3.33. the pipes during installation is permitted to carry out a one-piece and detachable connections . When connecting tube wiring prohibited the removal of gaps and misalignment of pipes by heat, tension or podgibaniya pipes. 3.34. Joining pipe posting to a mortgage designs (see Annex 3 recommended) processing equipment and pipelines, all appliances, automation equipment, switchboards and consoles to be be detachable connections. 3.35. For detachable joints and pipe connections postings should be applied normalized fittings. For the stainless steel tubing, aluminum and aluminum alloys should be used connecting parts specifically designed for these tubes. 3.36. Do not use the pipe connection of any type : on compensators, on curved sections; at fixing on the support and load-bearing structures; to pass through walls and floors of buildings and structures in areas that are inaccessible for maintenance during the operation. 3.37. pipe joints shall be located not less than 200 mm from mount. 3.38. When pipe joints in group Tube postings connection should be placed with a shift to enable the work tool when installing or removing pipe entries. When the group gaskets block distance between the detachable joints should be specified in the documentation taking into account the technology block assembly. 3.39. rubber tubes or pipes of a flexible material, connecting tube wiring with instrumentation and automation should be put on the full length of connecting terminals; pipes shall be installed without kinks, free. 3.40. Fittings (vents, valves, motors, etc. ), installed on tube postings of copper, aluminum and plastic pipes should be firmly attached to the designs. 3.41. All tube wiring should be marked. markings applied to the labels must comply with labeling Tube postings contained in the documentation. 3.42. protective coating must be made through the well-cleaned and degreased surface of the pipes. The color tube wiring should be specified documentation. Steel tubes, designed to protect pipe entries, must be painted outside. Plastic pipes are not subject to coloration. Tubes made of nonferrous metals are painted only in circumstances specified in the documentation. 3.43. When installing plastic pipes and pnevmokabeley need to apply the minimum number of connections, to the maximum building length of pipe and pnevmokabelya. 3.44. pnevmokabeli Plastic pipe and should be laid on the fire-resistant designs and lay on them freely and without tension, with taking into account the change in the length of the temperature difference. In areas of contact with the sharp edges of metal structures and fasteners soft-skinned cables and plastic pipes to protect the seals (rubber, polyvinyl chloride), protruding about 5 mm on both sides of the edges of the supports and mounting brackets. fasteners must be installed so as not to deform a section of plastic pipe and pnevmokabeley. 3.45. Compensation of the temperature changes the length of plastic pipe entries must be provided by a rational arrangement of mobile (free) and fixed (hard), fixtures and curved elements of most tubal wiring (outlets, ducks, laying " snake). 3.46. placement of fixed bindings that do not allow movement of postings in the axial direction should be made so as to divide the track into sections, the temperature deformation which occurs independently from one another and samokompensiruetsya. The fixed should be retention of junction boxes, cabinets, panels etc., and also in the middle sections between the two turns. In all other cases, where you can move pipes and pnevmokabeley in the axial direction, you should use the mobile mount. 3.47. Mounting of plastic pipes and pnevmokabeley cornering is not allowed. The top of the rotation at horizontal strip must lie on a flat solid support. At a distance of 0,5-0,7 m from the top of the rotation and pnevmokabeli plastic pipes should be fixed movable fixtures. 3.48. Installation of plastic pipe entries should be performed, avoiding damage to pipes (cuts, deep scratches , dents, reflow, burn-through, etc.). Lots of pipes were damaged, should be replaced. 3.49. pnevmokabeli Plastic pipes and laid open in the field of possible mechanical effects on the height of 2,5 m from the floor must be protected from damage to the metal casings, tubes or other devices. The design of protective devices should allow them free dismantling and maintenance of pipe entries. Lots of pipes up to 1 m for the devices, actuators and automation equipment installed on process piping and apparatus shall be permitted not to defend. 3.50. ext wiring from plastic pipes should be protected from direct sunlight. 3.51. pnevmokabeli Plastic tubes and in boxes and trays, laid horizontally, should be laid freely without bindings. When laying in boxes and trays, installed vertically, pipes and cables must be secured at intervals of not more than 1 m. In places the turning tracks or branches in all cases laying trays pnevmokabeli should be fixed in accordance with Section 3.47 of these rules. In the boxes, while laying plastic pipes and pnevmokabeley should be installed in fire-proof walls to the limit fire resistance of not less than 0,75 h every 50 m. Steel pnevmokabeli lay in boxes, are generally not allowed. pipes and cables out of the box are displayed through openings in its wall or floor. The holes must be fitted plastic sleeves. 3.52. Distances between the attachment of plastic tubes or bundles of them shall be no more than specified in Table 1.. 3.53. Tube posting of plastic tubes that transport liquids or moist gases, and plastic tubes at room temperature or filling of 40 ° C and above, must be laid on the horizontal sections in the solid bearing structures, and the vertical distance between wall sections should be reduced by half compared with that indicated in Table 1.. Table 1: Outer diameter of the pipe or tube bundle Dn, mm distance between the attachment points, m, while laying Horizontal Vertical To 100,30,5 250,50,8 St. 10 to 3.54. Upon accession, appliances, and bulkhead connections (subject to permitted bending radii) plastic pipe should have a stockpile of at least 50 mm in case of possible damage due to multiple rewiring of connections. 3.55. pnevmokabeley When laying on cable designs must meet the following conditions: pnevmokabeli should be arranged in one layer; sag should be formed only under its own weight pnevmokabelya and should not exceed 1% of span length. Mounting in horizontal strip should be through one support. 3.56. When installing metal pipe entries allowed to use any means of welding, providing high-quality connections, if the form or method of welding does not specify documentation. 3.57. The welding of steel pipelines and quality control of welded joints should be in accordance with SNIP 3.05. 05-84. 3.58. The method and the technological regime pipe welding, welding materials and welding procedures for monitoring should be made in accordance with the standard process for welding OST and OST 36-57-81 36-39-80 approved Minmontazhspetsstroya USSR. Types and structural elements of welds shall comply with GOST 16037-80. 3.59. Permanently attached copper tubing must be soldered in accordance with GOST 19249-73. Quality control solder joints should be carried out by visual inspection, as well as the hydraulic or pneumatic test. Externally, the solder joints should have a smooth surface. nodules are not allowed, captivity, shells, debris and nepropoi. 3.60. Fastening of single metal tube wiring should be carried on each support. ADDITIONAL REQUIREMENTS FOR THE INSTALLATION OF OXYGEN PIPE posting 3.61. works for the installation of the oxygen tube wiring should be carried out by staff who studied special requirements for the implementation of these works. 3.62. In the process of assembling and welding of the pipeline should be excluded contamination of its inner surface fats and oils. 3.63. The need for degreasing pipes, fittings and joints, it should be on technology provided by the GRL 26/04 - 312-83 (approved Minhimmashem), nonflammable solvent and dissolved detergent. pipes, fittings and connections for pipe entries, filled with oxygen, should be provided with a document evidencing the holding of degreasing and suitability for installation. 3.64. With threaded compounds is prohibited preroll flax, hemp, and promazka red lead and other materials containing oils and fats. ADDITIONAL REQUIREMENTS FOR INSTALLATION OF PRESSURE PIPE posting more than 10 MPa (100 kgf/cm2) 3.65. Prior to assembly tubular posting more than 10 MPa ( 100 kg / cm 2) are appointed by the responsible person from the engineering and technical workers who are entrusted with leadership and quality control of works on installation of pipe entries and documentation. The designated technical officers must be certified, after special training. 3.66. All elements of the postings on the tube pressure over 10 MPa (100 kgf/cm2) and welding materials arriving at the warehouse installation company, subject to verification by inspection. It also checked the quality and availability of relevant documentation and is drawn to the acceptance of pipes, valves, fittings, etc. 3.67. During installation and commissioning of piping systems, automation of the posting, filled with flammable or toxic liquids and gases, as well as pipe entries for Py> 10 MPa (100 kgf/cm2) should be guided by the requirements of the regulations contained in the recommended application 4. TEST PIPE posting 3.68 . Fully assembled tube wiring should be tested for strength and density in accordance with SNIP 3.05.05-84. Kind of (strength, density), method (hydraulic, pneumatic), duration and evaluation of test results must be taken in accordance with the documentation. 3.69. value of the test pressure (hydraulic and pneumatic) on the strength and density in tube wiring (pulsed drainage, feeding, heating, cooling, support and command systems, hydro) in the absence of guidance documentation should be taken in accordance with SNIP 3.05.05-84. 3.70. Team Tube posting, filled with air at an operating pressure Pp