GOST 33368-2015

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  ГОСТ 33368-2015

GOST 33368−2015 Trunk pipeline transport of oil and oil products. Filters. General specifications

GOST 33368−2015

INTERSTATE STANDARD

Trunk pipeline transport of oil and oil products

FILTERS

General specifications

Oil and oil products trunk pipeline transportation. Filters. General technical sped ications

ISS 23.040

Date of introduction 2016−08−01

Preface

Goals, basic principles and main procedure of works on interstate standardization have been established in GOST 1.0−92 «interstate standardization system. Basic provisions» and GOST 1.2−2009 «interstate standardization system. Interstate standards, rules and recommendations on interstate standardization. Rules of development, adoption, application, renewal and cancellation"

Data on standard

1 was DEVELOPED by limited liability company «Scientific-research Institute of transport of oil and oil products Transneft» (JSC «NII Transneft»)

2 MADE by PC 7 Subcommittee «Trunk pipeline transport of oil and oil products» of the interstate technical Committee for standardization MTK 523 «Technique and technology of extraction and processing of oil and gas"

3 ACCEPTED by the Interstate Council for standardization, Metrology and certification (Protocol dated 22 July 2015 N 78-P)

The adoption voted:

4 by Order of the Federal Agency for technical regulation and Metrology of December 8, 2015 N 2115-St inter-state standard GOST 33368−2015 introduced as a national standard of the Russian Federation from August 1, 2016.

5 INTRODUCED FOR THE FIRST TIME


Information about the changes to this standard is published in the annual reference index «National standards» (as of January 1 of the current year), and the text changes and amendments — in monthly information index «National standards». In case of revision (replacement) or cancellation of this standard a notification will be published in the monthly information index «National standards». Relevant information, notification and lyrics are also posted in the information system of General use — on the official website of the Federal Agency for technical regulation and Metrology on the Internet (www.gost.ru)

1 Scope

1.1 this standard applies to filters placed on the oil pumping stations of main oil pipelines and oil product pipelines with a nominal diameter up to DN 1200 nominal pressure up to PN 10.0 MPa inclusive, is intended for cleaning of the pumped oil and oil products from the contained solid objects and particles.

1.2 this standard does not apply to filters used for the fine filtration of aviation fuel (from 5 to 20 µm).

1.3 this standard is intended for use by organizations of countries-members of the interstate Council for standardization, Metrology and certification, engaged in the design, development, manufacture, receipt, transportation, storage, operation and disposal of filters for the trunk oil pipelines and oil product pipelines.

2 Normative references

This standard uses the regulatory references to the following international standards:

GOST 2.102−2013 unified system for design documentation. The types and completeness of design documents

GOST 2.103−68 unified system for design documentation. Under development

GOST 9.014−78 unified system of corrosion protection and aging. Temporary corrosion protection products. General requirements

GOST 9.407−84 unified system of protection from corrosion and ageing. Coating of paint. Method of appearance evaluation

GOST 12.1.007−76 System of standards of occupational safety. Harmful substances. Classification and General safety requirements

GOST 12.1.010−76 System of standards of occupational safety. No danger of explosion. General requirements

GOST 12.2.003−91 System safety standards. Equipment production. General safety requirements

GOST 12.2.044−80 standards System of labor safety. Machines and equipment for the transportation of oil. Safety requirements

GOST 12.2.063−81System of standards of occupational safety. Industrial valves. General safety requirements
_______________
On the territory of the Russian Federation [1].


GOST 12.3.009−76 System of standards of occupational safety. The work of loading and unloading. General safety requirements

GOST 15.309−98 development System and production statement on manufacture. Testing and acceptance of products. The main provisions of the

GOST 27.002−89 reliability of the technique. Basic concepts. Terms and definitions

GOST 27.003−90 Reliability in the technique. The composition and the General rules of the job requirements in terms of reliability

GOST 305−2013diesel Fuel. Specifications
_______________
On the territory of the Russian Federation [2].


GOST 511−82 Fuel for engines. The motor method of determining octane number

GOST 1012−2013 aviation Gasoline. Specifications

GOST 1639−2009 Scrap and wastes of nonferrous metals and alloys. General specifications

GOST 1667−68 motor Fuel for medium-speed diesel and low speed diesel engines. Technical requirements

GOST 2405−88 pressure Gauges, vacuum gauges, pressure-vacuum gage, naphrameru, draft gauges and tranporter. General specifications

GOST 2787−75 secondary ferrous Metals. General specifications

GOST 2999−75 Metal and alloys. Methods of measuring the hardness Vickers

GOST 4543−71 rolled alloy structural steel. Specifications

GOST 5520−79 sheet products of carbon, low alloy and alloy steel for boilers and vessels working under pressure. Specifications

GOST 6533−78 Bottoms are elliptic beaded steel, for vessels, apparatus and boilers. Basic dimensions

GOST 6996−66 Welded joints. Methods for determining the mechanical properties

GOST 8226−82 Fuel for engines. The research method of determining octane number

GOST 8479−70 Forged structural carbon and alloyed steel. General specifications

GOST 9012−59 (ISO 410−82, ISO 6506−81) Metals. Method of measuring hardness Brinell hardness

The GOST 10227−86 jet Fuel. Specifications

GOST 10354−82 polyethylene Film. Specifications

GOST 10433−75 Fuel oil for gas turbine installations. Specifications

GOST 10585−2013 Fuel oil. Oil. Specifications

GOST 10705−80 electrically welded steel Tubes. Specifications

GOST 12816−80 Flanges fittings, connecting parts and pipelines from 0.1 to 20.0 MPa (1 to 200 kgf/cm). General technical requirements

GOST 12971−67 rectangular Plates for machines and devices. Dimensions

GOST 13716−73 Device sling for vessels and equipment. Specifications

GOST 14192−96 Marking of cargo

GOST 14249−89 Vessels and equipment. Norms and methods of strength calculation

GOST 15150−69 Machines, instruments and other technical products. Versions for different climatic areas. Categories, conditions of use, storage and transportation of the impact of climatic factors of the external environment

GOST 19007−73 Materials. Method of determining the time and degree of drying

GOST 19281−2014 rolled high tensile strength. General specifications

GOST 20799−88 Oils. Specifications

GOST 21752−76 System «Man-machine». Flywheels control and handwheels. General ergonomic requirements

GOST 22727−88 the rolled sheet. Methods of ultrasonic testing

GOST 23170−78 Packing for products of engineering. General requirements

GOST 26349−84 pipe Connections and fittings. Pressure nominal. The ranks

GOST 28338−89 (ISO 6708−80) pipe Connections and fittings. Nominal diameters. The ranks

GOST 28759.5−90 Flanges of vessels and apparatus. Technical requirements

GOST 30546.1−98 General requirements for machines, instruments and other technical products and calculation methods for their complex structures in terms of seismic resistance

Note — When using this standard appropriate to test the effect of reference standards in the information system of General use — on the official website of the Federal Agency for technical regulation and Metrology on the Internet or in the annual information index «National standards» published as on January 1 of the current year, and the editions of the monthly information index «National standards» for the current year. If the reference standard is replaced (changed), when using this standard should be guided by replacing (amended) standard. If the reference standard is cancelled without replacement, then the situation in which the given link applies to the extent that does not affect this link.

3 Terms and definitions

This standard applies the terminology according to GOST 27.002, as well as the following terms with respective definitions:

3.1 quick-release terminal shutter: a Device placed in the end portion of the filter consisting of a cover and a swivel mechanism providing access to the interior cavity of the filter and sealing the internal cavity relative to the external environment.

3.2 the maximum pressure drop across the filter: pressure Differential across the filter, which allows operation of the filter with the contaminated filter element at rated flow and for a given value of the viscosity of crude oil or petroleum products.

3.3 minimum pressure drop across the filter: pressure Differential across the filter with uncontaminated filter element at rated flow and for a given value of the viscosity of crude oil or petroleum products.

3.4 nominal pressure PN: Pressure at fluid temperature of 20 °C, which ensures the specified service life of the housing parts of the filter, having a certain size, reasonable strength calculation for the selected material and the characteristics of their strength at 20 °C.

3.5 nominal diameter DN: Diameter used for pipe systems in the quality characteristics of the joining parts of the filter.

Note — the nominal diameter can be equal to the inner diameter of the joining pipe and the respective nearest value from a series of numbers taken in the prescribed manner.

3.6 nominal flow rate through the filter: the Flow rate through the filter at specified differential pressure providing a predetermined operating mode of the pipeline or of the pipeline.

3.7 test pressure : the Pressure at which should be carried out hydraulic test filter strength and the density of water at a temperature at least 5 °C and not more than 70 °C.

3.8 working pressure: the Pressure at which possible long-term filter operation for the selected material and a given temperature.

3.9 design pressure: the Pressure, which is based on strength.

3.10 filter porosity: the Maximum size of the undissolved solid particles of the pollutant detected in the filtered oil or petroleum products.

3.11 filter: Special device that cleans the pumped oil or oil products from mechanical impurities, foreign objects, clay, paraffin-resinous deposits and slag generated during the repair and maintenance of linear part of main oil pipeline or of the pipeline.

3.12 filter element: the filter Part directly involved in the cleaning fluid.

4 Reduction

This standard applies the following abbreviations:

SPTA — spare parts, tools and accessories;

KD — design documentation;

ND — normative documentation;

OTK Department of technical control;

TU — technical conditions;

SCF — vertical filter;

FGC — horizontal filter.

5 Classification

5.1 Filters depending on the design of the hull is divided into the following types:

— FGC;

— SCF.

5.2 FGC should be made in the overhead performance.

5.3 SCF depending on the accommodation is divided into the following types:

— underground placement;

— overhead placement.

5.4 the nominal pressure in accordance with GOST 26349.

5.5 By way of supplying working environment FGC is divided into the following types:

— axis;

side.

5.6 To ND the manufacturers must have the following filter settings:

— nominal diameter of the joining pipe — according to GOST 28338;

— nominal flow rate of oil or oil through the filter, m/h;

— filtration fineness, mm;

— minimum pressure drop across the filter, MPa

— the maximum pressure drop across the filter, MPa.

6 Technical requirements

6.1 Main indicators and characteristics

6.1.1 Indicators of destination

6.1.1.1 Filters should be designed to work with the working environment:

a) trademark oil with the following parameters:

b) petroleum products, namely:

________________
Requirements for motor gasoline in the Russian Federation are established in GOST R 51105 [3], GOST R 51866 [4].

_______________
On the territory of the Russian Federation also has the GOST R 52368 [2].

_______________
On the territory of the Russian Federation also has the GOST R 52368 [2].

6.1.1.2 working environment Temperature:

from -15°C to 80 °C — for oil;

— from -20°C to 60 °C — for oil products.

6.1.1.3 hazard Class working environment — 3 according to GOST 12.1.007.

6.1.1.4 Filters must be designed for operation in macroclimatic regions with temperate and cold CL climate, placement category 1 and atmosphere type II by GOST 15150.

6.1.1.5 Filter must pass the test of strength, together with the adjacent main and service pipelines with a pressure not higher than exposure for 24 h and the tightness pressure not higher PN exposure time of 12 hours.

6.1.1.6 nominal pressure filter in accordance with GOST 26349.

6.1.1.7 Pressure must meet the following requirements:

for FGC and 1.5PN;

— for the SCF — 1,25PN.

6.1.1.8 filtration FGC is determined depending on the maximum size of mechanical impurities in the working environment and should be when working with the environment «of the commodity oil and oil products» not more than:

— 4.0 mm;

— 5.0 mm;

— 8.0 mm;

To 12.0 mm.

6.1.1.9 filtration SCF is determined depending on the maximum size of mechanical impurities in the working environment:

1) commodity oil should be no more than:

2) oil should be no more than:

6.1.1.10 Minimum pressure drop for filters — 0,03 MPa.

6.1.1.11 the Maximum pressure drop must be:

— 0,1 MPa — for FGC;

— 0.05 MPa for the SCF.

6.1.1.12 the maximum flow of oil through the filter in accordance with Annex A.

6.1.1.13 Maximum flow of oil through the filter depending on DN and PNhave to be calculated for a specific oil [see 6.1.1.1 enumeration b)] and specified in the technical documentation for the filter.

6.1.2 design requirements

6.1.2.1 the filter Design must ensure the reliability and safety of operation throughout the service life and provide the possibility of carrying out of technical inspections, cleaning, complete emptying, venting, repair, and operational control of metal and compounds.

6.1.2.2 FGC should be a horizontal cylindrical body mounted on the support. Within the cylindrical body, is placed the filter element.

6.1.2.3 design FGC are shown in figure 1.

Figure 1 — the design of the FGC

1 — body; 2 — filter element; 3 — axial conduit of the entrance/exit of oil or oil products; 4 — side nozzle inlet/outlet of oil or oil products; 5 — quick connect terminal bolt; 6 — an inlet for pressure control; 7 — a branch pipe is installed shut-off valves for pressure control; 8 — pipe fitting to attach the drain pipe; 9 — the sling device; 10 — saddle support

Figure 1 — the design of the FGC

6.1.2.4 For the extraction/installation of the filter element and to provide sealing of the internal cavity of FGC relative to the external environment at the end portion of the housing shall be designed with a quick release terminal shutter.

6.1.2.5 Inside the case, there must be a mechanism for installation and retrieval of the filter element.

6.1.2.6 On FGC should be provided for the following pipes:

— axial conduit of the entrance/exit of oil or oil that corresponds to the diameter of the joining pipe;

— side nozzle inlet/outlet of oil or oil that corresponds to the diameter of the joining pipe;

— a branch pipe to control the pressure in the filter before opening, and also to remove air during hydraulic testing, with a pre-installed shut-off valve;

— elbow for attaching the drain pipe;

— two pipes for installation of pressure gauges located on the tube entry and exit of oil or oil products.

6.1.2.7 the Angle of saddle support for FGC should be at least 120°.

6.1.2.8 FGC must be made with a nominal diameter up to DN 1200 according to GOST 28338 and nominal pressure up to PN 10.0 MPa according to GOST 26349.

6.1.2.9 SCF should be a vertical cylindrical body mounted on the support. Within the cylindrical body must be placed the filter element with the lateral sides of the body should be located the water inlet and outlet of oil or oil products.

6.1.2.10 the design of the SCF is shown in figure 2.

Figure 2 — the design of FGV

1 — body; 2 — side inlet nozzle of oil or petroleum products; 3 — lateral nozzles of the discharge of oil or oil products; 4 — filter element; 5 — quick connect terminal bolt; 6 — ellipsoidal head; 7 — a branch pipe is installed shut-off valves for pressure control; 8 — pipes for installation of pressure gauges; 9 — bearing; 10 — a pipe to attach the drain pipe

Figure 2 — the design of FGV

6.1.2.11 In the upper end of the housing SCF shall be designed with a quick release terminal shutter that allows retrieval and installation of the filter element, and sealing the internal cavity of the filter relative to the external environment.

6.1.2.12 On SCF should include the following tubes:

— side inlet nozzle of oil or oil products;

— side outlet nozzle of oil or oil products;

— the pipe is installed shut-off valve to control the pressure in the filter before opening, and also to remove air during hydraulic testing;

— elbow for attaching the drain pipe (if the drainage system);

— two pipes for installation of pressure gauges located on the tube entry and exit.

6.1.2.13 In the lower part to the body of the SCF must be welded ellipsoidal head. The principal dimensions of the bottoms must meet the requirements of GOST 6533.

6.1.2.14 SCF can be made with self-cleaning system.

6.1.2.15 the design SCF self-cleaning is shown in figure 3.

Figure 3 — the design SCF self-cleaning

1 — lower casing; 2 — upper housing 3 — side inlet nozzle of oil or oil products; 4 — side outlet nozzle of oil or oil product; 5 — quick connect terminal bolt; 6 — a filtering element; 7 — the outlet nozzle is contaminated by oil or oil products; 8 — elliptic bottom; 9 — bearing; 10 — a pipe to attach the drain pipe; 11 — withdrawal of stator the stationary part of the withdrawal of contaminated working environment; 12 — Cup fixed to the stator part of the withdrawal of contaminated working environment; 14 — rotating Cup for removal of contaminated working environment; 15 — bearing partition; 16 technology divider; 17 — pin; 18 — rod rotary part; 19 — the packing unit; 20 — bearing rope; 21 — electric

Figure 3 — the design SCF self-cleaning

6.1.2.16 the self-cleaning SCF should include the following tubes:

— side inlet nozzle of oil or oil products;

— side outlet nozzle of oil or oil products;

— elbow for attaching the drain pipe;

— the outlet nozzle is contaminated by oil or oil products.

6.1.2.17 In the lower part to the body of the self-cleaning SCF must be welded ellipsoidal head. The principal dimensions of the bottoms must meet the requirements of GOST 6533.

6.1.2.18 SCF and SCF self-cleaning should be made with a nominal diameter up to DN 1000 according to GOST 28338 and nominal pressure up to PN 6.3 MPa according to GOST 26349.

6.1.2.19 to allow For inspection and access to internal parts of the SCF must be equipped with a manhole. A manhole must be placed at the bottom of the filter. The diameter of the manhole, the manhole shall be not less than 600 mm manhole shall be equipped with quick-release terminal shutter. Cover shutter shall be fitted with a swivel or other device for opening and closing in accordance with the rules of arrangement and safe operation of vessels in accordance with the standards of the member States of the Commonwealth of Independent States.

6.1.2.20 Requirements for the mass of filters are installed by the manufacturer in CD.

6.1.2.21 the Types and completeness of KD according to GOST 2.102.

6.1.2.22 Constructive and mounting dimensions FGC — in accordance with Annex B.

6.1.2.23 Requirements of constructive size of the SCF established by the manufacturer in CD.

6.1.2.24 Technical requirements for filters flanges and flange fittings meet the requirements of GOST and GOST 28759.5 12816.

6.1.2.25 the Use of flanges with a smooth sealing surface is not allowed.

6.1.2.26 the design of the filter element must meet the following requirements:

— performance — mesh or slit;

— the filter element should be detachable;

— the filter element must be regenerated, repeated use. After cleaning the filter element needs to restore the original hydraulic characteristics and to provide the specified filtration;

— fuel filter should be full flow to provide filtration of the entire flow of oil or oil products;

elements of design for installation and retrieval of the filter element shall be constructed of neiroblastoma materials.

6.1.2.27 the filter Design must ensure the excavation and installation of filter elements without removing the filter housing from the pipeline.

6.1.2.28 To provide access to the interior cavity of the filter should be installed quick release terminal shutter.

6.1.2.29 Design quick release limit valves must be following versions:

— bayonet;

— flanged;

— clamp;

— pie.

6.1.2.30 the Filter must provide the following design and operational features for working quick release end of the gate:

— the rotation of the clamping screws when opening/closing — free, without jamming;

— move the cover when opening/closing — free.

6.1.2.31 Control quick-release terminal shutter must be carried out manually or motorized with a manual override. Quick release terminal shutter must be equipped with a safety device, which excludes the possibility of opening when there is pressure in the filter.

6.1.2.32 Valves installed on the filter pipes (valve, tap or other device that allows you to monitor the pressure in the filter before opening), must meet the requirements for the particular type of reinforcement class And integrity [7].

6.1.2.33 filter Design to clean the oil nozzles of the input and withdrawal at the request of the customer should have the device for sampling.

6.1.2.34 the design of the inlet nozzles and outlet of oil or petroleum products must provide a welded connection or flange connection with the pipe.

Flange connection is allowed for pipes with a diameter of 500 mm, pressure PN up to 4.0 MPa.

6.1.2.35 On the filters shall be provided elements for slinging. Sling devices should comply with GOST 13716. The capacity of each sling device shall not be less than the force acting on the device with a minimum number of sling devices at the same time participating in the rise of the filter.

6.1.2.36 Design, the location of the sling device should be installed in CD. The design and placement of the sling devices must ensure the elimination of contact sling ropes with the surface of the filter during loading and unloading operations with the aim of preserving the former.

6.1.2.37 Removable parts filters weighing more than 5 kg must have a mechanism for withdrawal.

6.1.2.38 Filters must be equipped with supports for fixing to the Foundation to ensure sustainability.

6.1.2.39 the Filter must have external anti-corrosion coating applied in the factory.

6.1.2.40 In coordination with the customer is allowed to put filters coated with primer material that is part of the selected anti-corrosion coatings, provided the possibility of subsequent application of the coating layer at the installation location.

6.1.2.41 Before applying anti-corrosion coating, all screws and fittings should be covered with preservation grease, or have protective caps.

6.1.2.42 anti-Corrosion coating must perceive the impact of the environment without the peeling, cracking and discontinuities during storage, transportation stand-alone filter and its subsequent operation.

6.1.2.43 Before applying anti-corrosion coating the outer surface of the filters should be subjected to mechanical, abrasive jetting or blasting.

6.1.2.44 Before cleaning the metal surface should be dry and free from all contaminants (oil, grease, temporary preservative coating). On the surface of filters should be free of defects (dents, sinks, burrs, cracks). The metal surface should not have sharp edges, burrs, drops metals, slags, dross. If you cannot eliminate the above defects, mechanically filters are rejected and are not isolated.

6.1.2.45 After abrasive cleaning the surface of the filters should match the degree of purification is not below Sa 2in accordance with [8]. Cleaned the surface cameras must have a roughness Rz of 40 to 120 microns. Dust chamber surfaces after cleaning shall be not more than level 3 in accordance with [9].

6.1.2.46 the surface temperature of the filters during the execution of works on cleaning and coating shall be not less than 5 °C, relative humidity not more than 90%. To prevent condensation, the temperature of metal surface before coating should be at least 3 °C above dew point. The time between cleaning and coating should be no more than 2 hours.

6.1.2.47 subject to availability damage anti-corrosion coatings, obtained during transportation of the filters, loading / unloading and construction works allowed to carry out damage repair with use repair materials similar to the materials used for the application of the base coating. Works on repair of sites of damage of the coating shall be performed in accordance with the technological instructions for repair of anticorrosion coating, approved in the prescribed manner.

6.1.2.48 Choice system of external anti-corrosion coatings with nominal thicknesses depending on climatic zones, placement category of equipment and the corrosiveness of the atmosphere is carried out in accordance with the requirements of GOST 9.407.

6.1.2.49 Apply paint materials shall conform to the requirements of GOST 19007.

6.1.2.50 Material details of the filters and their coatings should be resistant to the pumped product.

6.1.2.51 Quality of incoming materials must be certified by the manufacturer.

6.1.2.52 anti-Corrosion coating should not prevent non-destructive testing of the walls of the filter.

6.1.2.53 anti-Corrosion coating for underground installation should consist of one, two or more layers on the basis of two-component polyurethane, modified polyurethane, epoxy compositions or similar insulating materials.

6.1.2.54 anti-Corrosion coating should be applied to the cleaned abrasive method, the metal surface of the filter in accordance with the instructions of the manufacturers of insulating materials for application.

6.1.2.55 Outer anti-corrosion coating must have a nominal thickness of:

— not less than 2.0 mm for filters up to DN 700 inclusively;

— not less than 2,5 mm — for filters from DN 800 or more.

6.1.2.56 Coating must be uniform, not to have gaps, bubbles, blisters and delamination. On the surface of the coating allowed the local thickening and nodules, do not reduce the coating thickness less than established requirements.

6.1.2.57 the End portions of the filter should be free from a protective coating for subsequent welding. Length of end sections without coverage should be 80±20 100±20 mm. In coordination with the customer can be supplied with the length of the uninsulated end sections of 120 to 150 mm.

6.1.2.58 the angle of the bevel of the coating to the metal surface should not exceed 30°.

6.1.2.59 According to customer’s requirement the filter be internal corrosion-resistant coating applied at the factory.

6.1.3 requirements for the construction

6.1.3.1 Filters should be made in accordance with the requirements of this standard, as well as existing regulations for the design, construction, acceptance of vessels and apparatus welded steel, rules for design and safe operation of vessels in accordance with the standards of the member States of the Commonwealth of Independent States.

6.1.3.2 in the manufacture of the filter should apply a system of quality control (input, operational and acceptance testing), ensuring execution of works in accordance with the requirements of ND.

6.1.3.3 Before the production of the filter and its components necessary to carry out the input control of the basic and welding materials and semi-finished products.

6.1.3.4 the Quality of welded joints must comply with the requirements of the rules of design, construction, acceptance of vessels and apparatus welded steel, devices, and safe operation of vessels in accordance with the standards of the member States of the Commonwealth of Independent States.

6.1.3.5 in the manufacture of filters should be applied, welding technologies, welding equipment and welding materials, certified in accordance with the standards of the member States of the Commonwealth of Independent States.

6.1.3.6 Welding shall be performed by welders certified in accordance with the rules of certification of welders and specialists of welding production in accordance with the regulatory requirements of the States members of the Commonwealth of Independent States, and having a certificate in the prescribed form.

6.1.3.7 Welding should be performed after confirmation of correct Assembly and absence/elimination of defects on all surfaces to be welded in accordance with the standards of the member States of the Commonwealth of Independent States.

6.1.3.8 All welding operations in the manufacture of the filter and its elements should be made at positive temperatures in closed rooms.

6.1.3.9 welded joints are not allowed external defects:

— cracks of all kinds and directions;

— fistula and the porosity of the outer surface of the seam;

— undercuts;

— nodules, burns and nezapravlenny craters;

— displacement and joint slip edges to be welded of the elements more than provided the requirements of the rules of design, construction of vessels and apparatus welded steel in accordance with the standards of the member States of the Commonwealth of Independent States;

— the joint surface should not have rough scaly (in excess of the crest above the trough should not be more than 1 mm).

6.1.3.10 Butt weld of the filter, determining its strength (longitudinal seams of shells, and the meridional chord joints elliptical bottoms, circumferential welds of the filter housing and the shutter), must be subjected to metallographic studies. Metallographic and micro macroscelididae should be carried out on one sample from each test weld.

6.1.3.11 Mechanical properties of welded joints must meet the following requirements:

— rupture strength shall not be below the minimum value of the time rupture strength of the base metal on the standard one or the standard organizations for a given grade of steel;

— the minimum value of the bending angle must be 120° in the absence of cracks or tears longer than 3.0 mm and a depth of more than 12.5% of the thickness of the sample, but not more than 3 mm;

— the hardness of the weld metal of welded joints of low carbon steel should be not more than 250 HVGOST 2999 or 250 HB (bead 5 mm) according to GOST 9012;

— the hardness of the weld metal of welded joints of low-alloy steel should be not more than 275 HVGOST 2999 or 275 HB (bead 5 mm) according to GOST 9012.

6.1.3.12 of Testing the impact strength of welded joints should be carried out on samples with a V-shaped incision according to GOST 6996 at a temperature of minus 40 °C for filters in a single climatic design U in accordance with GOST 15150 and minus 60 °C for filters in climatic design CL according to GOST 15150. The impact strength:

not less is 24.5 j/cm — for wall thickness up to 25 mm, inclusive;

— not less than 40 j/cm — for wall thickness above 25 mm.

6.1.3.13 welds must have a smooth transition from base metal to weld metal. Elevation gain from 0.5 to 3.5 mm, without weld, lack of penetration.

6.1.3.14 In the welded joints is not allowed the following internal defects:

— cracks all types and genres, including microcracks, revealed by microcleaving;

— fistula;

— lack of penetration (neoplasene), located in the cross-section of a welded joint;

pores, slag, tungsten and oxide inclusion, identified the radiographic or ultrasonic method.

The maximum allowable size of the pores and inclusions are given in table 1.


Table 1 — Maximum allowable size of the pores and inclusions

6.1.3.15 Not allowed the distance between pores and inclusions more than three maximum diameters.

6.1.3.16 the seams of the filter are subject to stigma. The mark must be applied in accordance with the rules of arrangement and safe operation of vessels in accordance with the standards of the member States of the Commonwealth of Independent States.

6.1.3.17 Have longitudinal seams the mark should be placed at the beginning and end of the seam at a distance of 100 mm from the ring seam. On the sidewall with a longitudinal seam of a length less than 400 mm, it is allowed to put the same stigma. For an annular weld stamp knock at the intersection of the circular seam and longitudinal seam and then every 2 m, but should be at least two marks on each seam. On the ring seam filter diameter of not more than 700 mm, it is allowed to put the same stigma. Place branding is enclosed in a well-visible frame performed by indelible distinctive paint.

6.1.3.18 In agreement with the customer instead of the marking of welds is permitted to make to the passport of the filter layout of seams with the numbers of the stamps of welders and signature of the individual performers.

6.1.3.19 the Holes for the pipes and fitting should be located outside the weld. The distance between the edge of the seam welding of the internal and external devices and components and the edge nearest the seam of the case should not be less than the thickness of the thickest wall, but not less than 20 mm.

6.1.3.20 allowed the crossing of the butt welds of the hull by fillet welding welding internal and external devices (supporting members, etc.).

6.1.3.21 the Enclosure must be made of shells. Shell should be made not more than two longitudinal seams of the sheets as possible. Allowed inserts with a minimum width of 400 mm. Width of the sheet between the shell circumferential seams shall be not less than 800 mm, a width of the locking insertion of not less than 400 mm.

6.1.3.22 Longitudinal seams of adjacent shells, and the seams transitions should be offset from each other in the amount of three times the thickness of the most thick element, but not less than 100 mm between the axes of the joints.

6.1.3.23 Length of the pipes inlet and outlet of oil or oil designed for welded joint pipelines shall not be less than 400 mm. Length of pipe for the connection of the piping drain lines shall be not less than 150 mm.

6.1.3.24 After Assembly and welding of shells filter housing must meet the following requirements:

— deviation in length — no more than 0.3% of the nominal length;

— deviation from straightness — not more than 1,5 mm on a length of 1 m and the total deflection does not exceed 0.2% of the length of the filter;

deviation inner/outer diameter — no more than ±1%.

6.1.3.25 the End portions of the pipes of the filter, is designed for welded joint pipelines shall meet the following requirements:

1) the deviation of the profile of the outer surface of the circumference in the weld zone at the end portions with a length of 200 mm from the ends and along the arc of a perimeter of 200 mm must not exceed 0.15% of the nominal diameter;

2) the deviation from perpendicularity of the end face relative to the generatrix (slant cut) shall not exceed 1.6 mm;

3) maximum deviation from nominal external diameter at the ends of the welded joint the length of at least 200 mm from the end shall not exceed ±1.6 mm;

4) the difference between the largest and smallest diameters of the end portion of the nozzle of the filter should not exceed ±3.0 mm;

5) the ratio of the difference between the greatest and least diameters to the nominal diameter shall not exceed in the terminal region of the outlet of the filter:

— 1% — wall thickness less than 20 mm;

— 0,8% for wall thickness 20 to 25 mm;

— 0,5% for wall thickness more than 25 mm;

6) permitted deviation from straightness of the ends of more than 0.5 mm over a length of 400 mm.

6.1.3.26 After welding, the filter should be heat treated.

6.1.3.27 Body parts should be heat treated depending on the thickness of the walls:

— up to 18 mm — high temperature (maximum temperatures up to 630°C);

— more than 18 mm — normalization or quenching and tempering.

6.1.3.28 After heat treatment the materials must have the following hardness:

— the hardness of low carbon steel should be not more than HV 200according to GOST 2999 or 200 NV (bead 5 mm) according to GOST 9012;

— toughness low-alloy steel should be not more than 240 HVGOST 2999 or 240 NV (bead 5 mm) according to GOST 9012;

hardness in the heat affected zone after welding of low carbon steel should be not more than 250 HVGOST 2999 or 250 HB (bead 5 mm) according to GOST 9012;

hardness in the heat affected zone after welding, low-alloy steel should be not more than 275 HVGOST 2999 or 275 HB (bead 5 mm) according to GOST 9012.

6.1.3.29 To measure the hardness of the used instruments (hardness testers), pass the test and are certified.

6.1.3.30 Threaded connections should not be free of burrs and nicks. The rupture of the threads on the tightening screws and nuts of the paddle is not allowed.

6.1.3.31 Elliptical bottoms the whole range of pressure ratings shall conform to the requirements of GOST 6533.

6.1.3.32 Body flanges of a whole series of nominal pressures and diameters shall conform to the requirements of GOST 28759.5.

6.1.3.33 At impossibility of application of the cutting edges of the pipes, providing a durable connection to the pipeline in accordance with 6.1.4, the manufacturer shall be provided adapter rings.

6.1.3.34 For the manufacture of transition rings are used the following products:

pipe;

— shells-rolled steel sheet;

— forgings.

6.1.3.35 adapter rings made of shells and forgings shall be termoobrabotannyj.

6.1.3.36 adapter rings should have no more than two longitudinal seams.

6.1.3.37 Materials of transition rings shall conform to the requirements of this standard.

6.1.4 Requirements for connection to the piping

6.1.4.1 the design of the nozzles of the input and output of crude oil or petroleum products, pipe for the connection of the piping drain line must ensure the execution of welded joints of pipelines. The groove connecting ends shall meet the following requirements.

6.1.4.2 the wall thickness of the pipe for each flow section must be designed for a working pressure according to the strength criteria according to GOST 14249.

6.1.4.3 On parts with wall thickness up to 5 mm the groove is allowed to perform.

6.1.4.4 When you run the cutting edges must meet the following condition:

, (1)

where a — the thickness of the connecting edge of nozzle, mm;

regulatory temporary resistance of the metal pipe, MPa;

 — the nominal wall thickness of attached pipe, mm;

regulatory temporary resistance of the metal dock pipe, MPa.

6.1.4.5 Connections (the linking ring) with an outer diameter equal to the diameter of the joining pipe shall have machined edges. Types of machining pipes (transition rings), the size of the ring blunting and height dimensions of the chamfer is shown in figure 4 and in tables 2 and 3.

Figure 4 — Types of machining pipes (transition rings)

and — fitting size of the hose (transition ring); In — height of the chamfer; with the width of the annular blunting; S — wall thickness;  — thickness of wall after a cylindrical or a special groove;  — residual thickness, less allowances, at an increased diameter;  — thickness of pipe; the diameter of the joining pipe;  — outer diameter of pipe (transition ring);  — connection diameter of hose (transition ring)

Figure 4, sheet 1 — Types of machining pipes (transition rings)

and — fitting size of the hose (transition ring); In — height of the chamfer; with the width of the annular blunting; S — wall thickness;  — thickness of wall after a cylindrical or a special groove;  — residual thickness, less allowances, at an increased diameter;  — thickness of pipe; the diameter of the joining pipe;  — outer diameter of pipe (transition ring);  — connection diameter of hose (transition ring)

Figure 4, sheet 2 — Types of machining pipes (transition rings)

Table 2 — Dimensions of ring blunting

Table 3 — Dimensions of the height of the chamfer

The choice of types of edges is determined on the basis of the following conditions:

a) depending on the wall thickness of the joining pipe should be used the following types of edges:

— up to 5 mm inclusive — types 1 and 4;

— from 5 to 15 mm inclusive — type 2;

— exceeding 15 mm — type 3;

b) if the difference is the wall thickness of pipe (transition ring) and the connecting pipe does not exceed 2.0 mm, the inner bevel is not made (types 2 and 3). If the difference is the wall thickness of pipe (transition ring) and the connecting pipe exceeds 2.0 mm, and the ratio of the wall thickness of the pipe (transition ring) and the pipe is less than 1.5, it is the inner bevel (type 5 and 6);

C) if the ratio of the wall thickness of the pipe (transition ring) and the connecting pipe is more than 1.5, you should use a cylindrical groove (7 and 8). Wall thickness after machining should range from 1.2 to 1.5 wall thickness of attached pipe.

6.1.4.6 Connections (the linking ring) with outer diameter more than the diameter of the joining pipe shall have machined edges. Types of machining pipes (transition rings), the size of the ring blunting and height dimensions of the chamfer is shown in figure 4 and in tables 2 and 3.

The choice of types of edges is determined on the basis of the following conditions:

a) depending on the wall thickness of the joining pipe should be used the following types of edges:

— up to 5 mm inclusive — types 9 and 12;

— up to 15 mm inclusive — type 10;

— exceeding 15 mm — type 11;

b) if the difference of the residual thickness of pipe (transition ring) and the connecting pipe does not exceed 2.0 mm, the inner bevel is not made (types 10 and 11). If the difference in residual wall thickness of pipe (transition ring) and the connecting pipe exceeds 2.0 mm, and the ratio of the residual wall thickness of pipe (transition ring) and the pipe is less than 1.5, it is the inner bevel (types 13 and 14);

C) if the ratio of the residual wall thickness of pipe (transition ring) and the connecting pipe is more than 1.5, you should use a cylindrical groove (15 and 16). Wall thickness after machining should range from 1.2 to 1.5 wall thickness of attached pipe.

6.1.4.7 to If the ratio of the wall thickness of the part and the pipe exceeds 1.5, in agreement with beyond — the-Cascina/manufacturer must be provided adapter rings.

6.1.4.8 Strength of the connected elements (regulatory strength) should not differ from the specified values by more than 9.8 MPa.

6.1.4.9 If you cannot use the cutting edges of the pipes, providing a durable connection to the pipeline, the manufacturer shall be provided adapter rings. Connection example connection of the filter pipeline with the help of the transition ring is shown in figure 5.

6.1.4.10 Rings are cylindrical shells of length at least 250mm for pipes with nominal diameters up to DN 500 including 400mm pipes with a nominal diameter greater than DN 500. One end of the ring needs to be machined for joining with the outlet end of the filter and the other end machined for joining with the joining pipe. The groove of the ring should correspond to the cutting edges of the pipe and the joining pipe to provide strength equal to welded connection with the pipeline and pipe.

Figure 5 — Example of connection of a branch pipe of the filter pipeline using a transition ring

1 — pipeline; 2 — adapter ring; 3 — a branch pipe of the filter

Figure 5 — Example of connection of a branch pipe of the filter pipeline using a transition ring

6.1.5 reliability Requirements

6.1.5.1 In this standard the composition, procedure and General rules specify the requirements for reliability are established in accordance with GOST 27.003. The design and workmanship of the filter must ensure that the following reliability indicators:

— reliability;

— durability;

— maintainability;

— persistence.

6.1.5.2 the Indicators of reliability are:

— time to failure — not less than 500 cycles of opening/closing the shutter;

— probability of failure per cycle — at least is 0.998.

6.1.5.3 durability properties are:

— assigned service life — 30 years;

— assigned resource at the gate — 1500 cycles opening/closing;

— the number of cycles of opening/closing to the replacement of the sealing elements of the gate — not less than 150.

6.1.5.4 Measure of maintainability is mean time to repair.

Average recovery time should be no more than:

— 3.5 hours — for filters DN 200 and DN 400;

— 4.5 hours — for filters from DN 500 to DN 800;

— 5 hours — for filters from DN 1000 to DN 1200.

6.1.5.5 the storage Time of the filter must be at least two years.

6.1.5.6 Rejection filter operating conditions can be:

— loss of tightness relative to external environment for body parts.

— loss of tightness to end gate;

— loss of tightness of a releasable connection;

— failure to comply with the functions of the closed shutter;

the failure of the functions «open» shutter.

6.1.5.7 To the criteria of limit States include:

— the initial stage of a breach of integrity of body parts (sweating, drip leak);

— the need to exert force on the wheel (flywheel) end of the shutter to achieve the tightness of the latter, exceeding the limit value of 250 N (25 kgf);

the time discrepancy of the opening/closing limit stopper to the norms established in this standard;

the failure function of the safety device, which excludes the possibility of the opening end of the shutter in the presence of a pressure filter;

— the maximum permissible defects in the metal of the housing parts and of the welded joints specified in this standard;

— change/reducing thicknesses of walls of the housing parts to the minimum allowable strength calculation values;

— violation of geometry of body parts in excess of the maximum tolerances provided in this standard.

6.1.5.8 the conditions for extending the service life of the filter must be specified in the instruction manual of the filter.

6.1.6 the Requirements of resistance to external influences and survivability

6.1.6.1 Filters must be designed for operation in macroclimatic regions with temperate and cold CL climate, placement category 1 and atmosphere type II by GOST 15150.

6.1.6.2 the relative humidity of the ambient air during transportation, storage, installation and operation of the filters can reach 100%.

6.1.6.3 Filters depending on the seismicity of the accommodation on the MSK — 64 scale [10], must meet one of the following versions:

— nezametnoe (S0) for areas with seismicity up to 6 points, inclusive;

— seismic © for areas with seismicity more than 6 to 9 points, inclusive;

— high seismic resistance (PS) for areas with seismicity of more than 9 to 10 points, inclusive.

6.1.6.4 On the earthquake resistance must be designed casing, the connectors, supports and fasteners filter and other responsible design elements at the discretion of the manufacturer, damage, displacement or deformation which can lead to destruction, failure of the filter or reduce its performance and reliability.

In the calculation must be taken that the filter at the same time are equivalent to loads in the vertical and horizontal directions, and also to consider the action of workloads.

The lower natural frequency of the filter should be calculated according to the scheme of fixing the pipes in the verified methods of, and confirm in accordance with GOST 30546.1.

The value equivalent to the calculated maximum acceleration for 9 points, acting on the elements of product design in the horizontal directions should be determined according to GOST 30546.1 (figure 2) along the curve with 2% relative damping.

The value is equivalent to the estimated maximum acceleration acting on the filter in the vertical direction should be equal to 0.7 the values for the horizontal direction.

The calculated seismic loads to the structural elements of the filter should be determined by multiplying the calculated equivalent maximum acceleration on the inertia characteristics of the filter.

6.1.6.5 the Manufacturer shall determine in accordance with applicable codes and standards of the member States of the Commonwealth of Independent States, allowable loads on nozzles with attached piping and load values to specify in the operational documentation.

6.1.6.6 Filters must be designed for operation in regions with indicators of wind load:

— normative value of wind pressure of not less than 0,48 kPa;

— wind speed (upper value) — 50 m/s.

With wind speeds that cause the fluctuation of the filter a frequency equal to the natural frequency, it is necessary to carry out checking calculation on the resonance.

The calculated load and displacement at resonance must be determined as the geometric sum of the resonance of efforts and displacements, as well as efforts and movements from other types of pressures and impacts, including the estimated wind load.

6.1.7 Requirements of ergonomics

6.1.7.1 Filters should be equipped with stationary platforms with ladders and fencing included in the package, to service the parts. Service platforms shall conform to the requirements of GOST 12.2.044.

6.1.7.2 Basic dimensions wheels must meet the ergonomic requirements GOST 21752.

6.1.7.3 the force on the flywheel end quick release the shutter when it is opening and closing should not be more than 150 N (15 kgf). The force on the flywheel end quick release the shutter at the moment of locking (or breakaway at the opening) shall not exceed 250 N (25 kgf).

6.1.7.4 the rotation of the flywheel quick release end of the shutter in a clockwise direction must correspond to the closing of the quick release end of the shutter, and counterclockwise rotation to open the quick connect end of the shutter.

6.1.7.5 nominal diameter pressure gauge mounted on the filter should be at least 160 mm.

6.2 Requirements for raw materials, materials and purchased products

6.2.1 the Materials from which made the elements, perceiving the pressure of working medium and separating labor and the environment, must comply with the requirements of ND and have permission to use in accordance with the standards of the member States of the Commonwealth of Independent States.

6.2.2 Materials the chemical composition and mechanical properties shall meet the standards of the member States of the Commonwealth of Independent States, THE or of organizational standards and confirmed by certificates of manufacturers, in their absence, test reports of the manufacturer according to the methods provided for ND the relevant material.

6.2.3 the choice of materials for this type of climatic performance of the filters should be the lower value of ambient air temperature. Calculated temperature of the wall of the filter 80 °C.

6.2.4 Materials should be resistant to working environment and environmental conditions. The corrosion rate of the materials and welds should be no more than 0.1 mm/year when exposed to the working environment and external factors specified in 6.1.1 and 6.1.6.

6.2.5 the Value of the carbon equivalent , characterizing the weldability of steel, shall not exceed 0,43.

The value of the carbon equivalent is determined by the formula

, (2)

where C, Mn, Cr, Mo, V, Ni, si mass fraction in steel, respectively, of carbon, manganese, chromium, molybdenum, vanadium, Nickel and copper, %.

Copper, Nickel, chromium contained in the steel as impurities, the calculation does not take into account if their total content does not exceed 0,20%.

6.2.6 materials for the main elements of the filter should be made:

a) steel sheet:

brands 09G2S, 10G2S1 categories 6, 7, 9, 14 according to GOST 19281, categories 8, 9, 14 GOST 5520для climatic version y, and CL according to GOST 15150;

— grades 17GS, 17G1S categories 4−8, 12−14 according to GOST 19281, categories, 6−8, 12−14 according to GOST 5520для climatic version y, and CL according to GOST 15150;

b) forgings GOST 8479 category strength not lower than KP 245 group IV of steel:

— 09G2S categories 6, 7, 9, 14 according to GOST 19281 for climatic version y, and CL according to GOST 15150;

brand 16GS categories 4−8, 12−14 according to GOST 19281 for climatic version y, and CL according to GOST 15150. Forgings should be termoobrabotannyj;

in a) seamless pipes from steel grades 09G2S, 10G2 GOST 19281 for performances CL according to GOST 15150, made of steel 20 GOST 19281 for execution in accordance with GOST 15150 should be termoobrabotannyj;

g) longitudinally welded pipes from steel grades 12ГСБ, 12Г2СБ according to GOST 19281 and 13G1S-U GOST 10705;

d) tightening screw and spindle nut made of steel 20KHN3A, 40X GOST 4543.

6.2.7 Materials fasteners should be selected with coefficient of linear expansion close to the value of the coefficient of linear expansion of the material of the mating element. The difference in coefficients of linear expansion shall not exceed 10%.

6.2.8 the Materials used for the manufacture of filters, Assembly units, details shall be indicated in KD.

6.2.9 Nuts and studs for connections should be made of steels with different hardnesses so that the hardness of the nuts was lower than the hardness of the studs not less than 15 NV GOST 9012.

6.2.10 the Value of impact toughness KCV nuts, and studs shall be not less than 30 j/cmat a temperature of minus 40 °C for performance according to GOST 15150 and minus 60 °C — for execution CL according to GOST 15150.

6.2.11 Sealing elements of the valve must be made of oil-petrol-resistant materials. The material of the sealing elements must be designed to work with the environment with the parameters specified in 6.1.1.2, and when ambient temperatures on the climatic execution in accordance with GOST 15150.

6.2.12 substitution may be of materials other brands, whose properties do not impair the quality of parts and the filter in General and meet the requirements of this standard.

6.2.13 Material design, quality parts and filter as a whole should ensure reliable operation during the assigned service life — not less than 30 years.

6.2.14 package of filters includes two pressure gauges. Both gauges choose one type of measurement limit, the same class of accuracy and with the same interval.

6.2.15 the Class of accuracy of pressure gauges should be no worse than the 0.6 in the whole range of measurements according to GOST 2405. The measured value must be within the second third of the dial gauge.