GOST R 55085-2012

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  ГОСТ Р 55085-2012

GOST R 55085−2012 steel welded Cylinders for pressure up to 1,6 MPa for liquefied petroleum gas used as motor fuel for automotive vehicles. Specifications

GOST R 55085−2012

NATIONAL STANDARD OF THE RUSSIAN FEDERATION

STEEL WELDED CYLINDERS FOR PRESSURE up to 1,6 MPa FOR LIQUEFIED petroleum GAS USED AS MOTOR FUEL FOR AUTOMOTIVE VEHICLES

Specifications

Welded Steel cylinders on a pressure of 1.6 MPa for liquefied hydrocarbon gas, used as motor fuel on car transport facilities. Specifications

OKS 23.020.30
GST 14 1200;
14 1300

Date of introduction 2013−10−01

Preface

The objectives and principles of standardization in the Russian Federation established by the Federal law of 27 December 2002 N 184-FZ «On technical regulation», and rules for the application of national standards of the Russian Federation — GOST R 1.0−2004 «Standardization in the Russian Federation. The main provisions"

Data on standard

1 DEVELOPED by the Open joint stock company «Russian scientific research Institute of pipe industry» (JSC «RosNITI»)

2 SUBMITTED by the Technical Committee for standardization TC 357 «Steel and cast iron pipes and cylinders"

3 APPROVED AND put INTO EFFECT by the Federal Agency for technical regulation and Metrology dated 14 November 2012 N 786-St

4 INTRODUCED FOR THE FIRST TIME


Information about the changes to this standard is published in the annually issued reference index «National standards», and the text changes and amendments — in monthly published information index «National standards». In case of revision (replacement) or cancellation of this standard a notification will be published in a 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

1 Scope

This standard applies to welded steel cylinders without valve (hereinafter, the cylinders) for a working pressure of 1.6 MPa, intended for liquefied hydrocarbon gases according to GOST 27578, used as a fuel for automotive vehicles.

The standard does not apply to cylinders toroidal shape.

2 Normative references

This standard uses the regulatory references to the following standards:

GOST R 15.201−2000 System of development and production statement on manufacture. Production of industrial-technical purpose. The procedure for the development and production statement on manufacture

GOST 9.032−74 unified system of protection from corrosion and ageing. Coating of paint. Groups, technical requirements and designations

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

GOST 380−2005 carbon Steel of ordinary quality. Brand

GOST 1050−88 hire gauged bars with special surface finishing of carbon structural quality steel. General specifications

GOST 2016−86 Gauges threaded. Specifications

GOST 3242−79 welded Connections. Quality control methods

GOST 5539−73 Litharge of lead. Specifications

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

GOST 7512−82 nondestructive testing. Welded connections. Radiographic method

GOST 7931−76 natural linseed Oil. Specifications

GOST 8253−79 Chalk chemically besieged. Specifications

GOST 9909−81 Basic norms of interchangeability. The threaded valves and cylinders for gases

GOST 13078−81 Glass of liquid sodium. Specifications

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 17410−78 nondestructive testing. The seamless cylindrical metal pipe. Methods of ultrasonic flaw detection

GOST 18442−80 nondestructive testing. Capillary methods. General requirements

GOST 19151−73 Minium lead. Specifications

GOST 19903−74 hot-rolled steel sheets. Assortment

GOST 19904−90 cold-rolled steel sheets. Specifications

GOST 20415−82 nondestructive testing. Methods acoustic. General provisions

GOST 21105−87 nondestructive testing. Magnetic particle inspection

GOST 23055−78 nondestructive testing. Welding of metals by melting. Classification of welded joints according to the results of radiographic inspection

GOST 24297−87 Input control products. The main provisions of the

GOST 24705−2004 (ISO 724:1993) Basic norms of interchangeability. Metric thread. Basic dimensions

GOST 24997−2004 (ISO 1502:1996) Gauges for metric threads. Tolerances

GOST 24998−81 Gauges for tapered thread valves and cylinders for gases. Tolerances

GOST 25859−83 Vessels and apparatuses steel. Norms and methods of strength calculation under low-cycle load

GOST 26266−90 nondestructive testing. The ultrasonic transducers. General technical requirements

GOST 27578−87 liquefied hydrocarbon Gases for motor transport. Specifications

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 published annually by the information sign «National standards» published as on January 1 of the current year and related information published monthly indexes published in 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 following terms with respective definitions:

3.1 visual inspection: supervision by the organs of vision.

3.2 inclusion: the Cavity in the weld metal, filled with slag or other foreign material.

3.3 capacity: the volume of the internal cavity of the cylinder.

3.4 test pressure: the Pressure at which produced the test cylinder strength.

3.5 working pressure: the Maximum pressure in the gas tank in the normal flow of the workflow.

3.6 destructive pressure: the Maximum pressure attained in the test cylinder to destruction.

3.7 sunset: a Burr or a bump, not welded with the metal surface and along the rolling direction.

3.8 measurement control: the Control exercised with the use of measuring instruments.

3.9 the crater: the Defect of the weld bead in the form of a cavity or depression formed by the shrinkage of molten metal during solidification.

3.10 dissolve the Defect of the weld bead in the form of metal, NATEXPO in the welding process on the surface of welded parts and is not alloyed with them.

3.11 lack of fusion: Lack of fusion between the primary and weld metal, and between the individual layers of the aisles in a multilayer process.

3.12 inspection: Control of cylinders in operation.

3.13 batch: Group of cylinders having the same dimensions, manufactured under the same design and technological documentation, on the same equipment of the same metal, simultaneously imposed on the acceptance, in assessing the quality of which are one common solution.

3.14 captivity: the Defect of a thin flat metal peeling azkabanu forms, United with the base metal.

3.15 undercut: Sharp cone-shaped depression on the boundary surface of the weld with the base metal.

3.16 time, the gas Filled cavity a rounded shape in the weld.

3.17 burn-through: a Defect in the form of a through hole in the welded seam, formed by the outflow of the liquid metal weld pool in the process of welding.

3.18 shell: a Defect in the form of an open or closed cavity round shape, located on the surface or in the metal.

3.19 risk: the Defect of the surface in the form of a groove without a protrusion of the edges.

3.20 fistula: a Defect in a tubular or funnel-shaped indentations in the weld.

3.21 the estimated service life: the service time of the container in years, calculated from the date of manufacture indicated on the rating plate.

3.22 crack: a Defect, which is a rupture of the metal.

3.23 standard series cylinders: cylinders made by one of design documentation, of the same material, same diameter, but different lengths.

3.24 the expert organization: the Organization having the license of the Rostechnadzor for the examination of industrial safety.

4 Denote

This standard applies the following designations:

—  — relative ovality in the cross section of a cylinder, %;

—  — ovality in the cross section of the cylinder, mm;

— the maximum outer diameter in cross section of the cylinder, mm;

— minimum outer diameter in cross section of the cylinder, mm;

— the wall thickness of the cylinder, mm;

—  — working pressure, MPa;

—  — test pressure, MPa;

— once the cylinder pressure, MPa;

— the full tank capacity, l;

—  — tank capacity, l;

— maximum operating temperature, °C;

—  — the factor of safety of the cylinder.

5 Technical requirements

5.1 Main features

5.1.1 the Design of cylinders shall be technologically advanced, reliable and safe during manufacturing, installation and operation during the design life specified in the technical documentation, and shall provide for the possibility of carrying out of technical inspections, cleaning, washing, complete emptying, purging and repair of cylinders.

5.1.2 Design of cylinders shall conform to the requirements of this standard and Rules [1] and must be operable during the filling of the liquefied hydrocarbon gases up to working pressure of 1.6 MPa at ambient temperature from minus 40 °C to plus 45 °C.

5.1.3 cylinders must have a minimum weight and at the same time must meet the requirements of safe operation of vessels working under pressure, in accordance with the Rules [1].

5.1.4 Calculation of the strength of cylinders is produced according to GOST and GOST 14249 25859, or other regulatory documents approved by Rostechnadzor.

5.1.5 the Form of the bottoms of cylinders is determined by the developer in accordance with the requirements of 2.3 of the Rules [1] and GOST 14249.

5.1.6 the bottom of the cylinders produced by cold-forming or hot forging at the temperature of its end at least 700 °C, should be subjected to heat treatment to relieve internal stresses. Kind of heat treatment regimes should be specified in the technical documentation on the cylinders.

5.1.7 Deviation from flatness of the end surfaces of the bottoms should be no more than 1 mm.

5.1.8 the actual Thinning of the wall thickness of the bottoms during technological operations — drawing, stamping, etc. should be no more than 10% of the nominal wall thickness.

5.1.9 Deviation of the outer diameter of the shell and beaded items bottoms must be no more than ±1% from nominal diameter.

5.1.10 relative ovality at any cross section of the cylinder shall be not more than 1%.

Allowed in design documentation on the cylinders to define the tolerance roundness within a tolerance relative ovality.

The relative roundness of the cylinders, in which the ratio of the thickness of the socket wall to the inner diameter of not more than 0.01, can be increased to 1.5%.

5.1.11 Thread the drain cap and plug must be W 27,8 GOST 9909. The thread is not allowed dents, burrs, nicks, holes and chipping.

Metric thread holes of the flange must be according to GOST 24705.

On a metric thread can be slightly pitting, no more than third of total number of turns, the total length — no more than one loop.

5.1.12 On the outer and inner surfaces of the cylinders are not allowed slivers, shells, sunsets, cracked, and not allowed risks bringing the wall thickness of the cylinders beyond allowable negative deviation.

5.1.13 Cylinders must be durable and airtight.

Signs of rupture, leakage, sweating or visible residual deformations are allowed.

5.1.14 pressure for cylinders must be at least of 3.84 MPa. The destruction must be shatterproof.

5.1.15 the design shall be provided with lifting loops or other elements for slinging cylinders.

5.1.16 the Outer surface of the cylinders must be painted with weatherproof enamel red. The coating must meet the requirements of the V class according to GOST 9.032.

Before coating the outer surface of the cylinders must be cleaned of dirt, oils, rust and primer coated.

It is not allowed to cover the primer and staining the mounting surface of the flange, the end face of the drain cap and threads of the cylinder.

5.1.17 In the drain cylinder must be installed the plug with sealant application. As the seal may be used by the lead litharge according to GOST 5539 or lead minium according to GOST 19151 diluted by natural drying oil according to GOST 7931, or a mixture of liquid glass GOST 13078 and chalk GOST 8253 in the ratio of 1:1 or.

5.2 Requirements for materials

5.2.1 Basic details, sides, bottoms and backing ring cylinders shall be manufactured of rolled sheet metal, carbon or low alloy steel grades listed in table 9 of Annex 4 of the Rules [1] or stamps, is approved by special permission of Rostekhnadzor. Assortment of rental shall conform to the requirements of GOST or GOST 19903 19904.

Carbon boiling steel for the manufacture of cylinders to use is not allowed.

5.2.2 Mechanical properties of the base metal, the temporary resistance and yield point shall conform to the requirements of the design documentation on the cylinders.

5.2.3 Other parts of the tank flange, drain the neck, the cap lifting loop and the nameplate are made of steel of the same marks, and the principal parts, or from steel grades St3ps st3sp according to GOST 380 or 20 to GOST 1050.

5.2.4 the Quality and properties of materials must meet the requirements of the relevant standards and specifications and must be confirmed with the supplier certificates. In the absence of some data in the certificate or the marking by the manufacturer of the cylinders shall carry out all necessary tests by making their results the Protocol amending the certificate of material supplier.

5.2.5 Materials used in the manufacture of cylinders shall be subjected to incoming inspection according to GOST 24297, including verification of certificates, verification of marking material and the testing of metal for the sides and bottoms of the standards, to the extent provided by the manufacturer of the cylinders.

5.3 Requirements for welding

5.3.1 When welding of shells and welded the bottoms of the shells should be applied to butt welds with full penetration. For welding of flanges and drain openings should be applied t-and fillet welds with full penetration. Welds must be accessible for inspection during manufacture and use.

5.3.2 the Offset edges of the butt welds of the cylinders must be no more than, mm:

— longitudinal — ;

— ring — .

5.3.3 Drift (angularity) of the abutting edges welded joints should be not more than 0.1mm.

5.3.4 the Applied technology of welding must be certified in accordance with the requirements of regulation [1] and guidance document [2].

Used welding equipment shall be certified in accordance with the requirements of the guidance document [3].

Used welding materials must be certified in accordance with the requirements of the guidance document [4].

Production welding allowed the welder, certified in accordance with the requirements of regulation [5], the guidance document [6] and have a certificate in the prescribed form. In accordance with Rules 4.3 [1] welds of the cylinder are subject to stigma. The mark allows to identify the welder who performed the weld joint.

For control of welded joints by physical methods must be performed, vetted in accordance with the requirements of regulation [7].

5.3.5 Welding work in the manufacture of cylinders shall be carried out at positive temperatures indoors.

5.3.6 Mechanical properties of longitudinal and circumferential butt welds — tensile strength and yield strength, when tested in static stretching must meet the requirements of the design documentation on the cylinders.

The bending angle of welded joints when tested in static bending must meet the requirements of table 7 of the Regulations [1].

5.3.7 In welded cylinders are not permitted the following defects:

— cracks of all kinds and directions in the weld metal, fusion line and HAZ of the base metal;

— lack of penetration;

gas pores and slag inclusions exceeding the norms, corresponding to the 3 class of defects GOST 23055 — width > 0.6 mm, length more than 2.0 mm and a total length of more than 6.0 mm per 100 mm length of the weld;

— undercuts the base metal length more than 2 mm and a depth of more than 0.6 mm, in an amount of more than three scores on 100 mm length of the weld;

— craters;

— burn-through;

— nodules;

— fistula;

— mismatch of the shape and size of the welds to the requirements of design documentation.

5.3.8 Unacceptable defects in welds discovered in the process of making cylinders, should be removed with the subsequent control of the fixed station. Correcting defects in the same area of the welded joint is allowed to hold not more than three times.

5.4 completeness

5.4.1 gas Cylinders shall be equipped in accordance with the requirements of design documentation.

5.4.2 the set of each bottle must include the passport with the attached drawing of the cylinder, operating instructions, copies of the certificate of conformity in the GOST R system.

5.4.3 the Passport must be sealed in a package made of polyethylene film with a minimum thickness of 0.1 mm and attached to a lifting loop or placed in a shipping box.

5.4.4 shipped Each batch must be accompanied by a document of quality which must be specified:

— the name of the manufacturer;

— the symbol of the cylinders;

— batch number and date of holiday party;

— the number of cylinders in the party and their numbers;

— information on the acceptance of the cylinders OTC;

— the designation of this standard.

5.5 Marking

5.5.1 each cylinder must be securely attached nameplate, which is clearly marked with the following data

— trademark of the manufacturer;

— cylinder number according to the numbering system of the manufacturer;

— the symbol of the container;

— date of manufacture (month, year) and the year following the survey (two-digit month and last two digits of the year);

— mass of empty cylinder (nominal), kg;

— operating pressure, 1.6 MPa;

— test pressure 2,5 MPa;

— full tank capacity (nominal) , l;

— useful tank capacity (nominal) , l;

— maximum operating temperature, 45 °C;

— brand OTC manufacturer of circular shape with a diameter of 10 mm;

— the designation of this standard;

— life — «do Not use after the date (two digits for the month and year)».

5.5.2 character Height of the markings shall not be less than 6 mm for cylinders up to 55 l inclusive and at least 8 mm for cylinders with a capacity of over 55 L.

5.5.3 On the sides of the cylinders for forming must be affixed weather-resistant white enamel FLAMMABLE. The height of the letters shall be not less than 60 mm. the Font and the location of the labels must comply with the design documentation on the cylinders.

5.6 Packaging

5.6.1 Packaging should protect the cylinders from shocks, mechanical damage, to ensure the safety of coloring and protection from dirt and moisture into the cylinders.

In the hole of the drain cap of the cylinder should be installed end cap, the flange of the container shall be securely closed with a lid.

5.6.2 Accepted by QCD cylinders should be wrapped in paper and Packed in a shipping container manufacturer. Move the cylinder inside the container is not allowed.

5.6.3 allowed to put the cylinders without the shipping containers. For protection from shocks, mechanical damage and securing of coloration on the body of the cylinders must be equipped with two rubber protective ring to a diameter of the cross section from 16 to 20 mm.

6 security Requirements

6.1 Basic requirements in the manufacture of cylinders to ensure their safe operation:

— mechanical properties of base metal and welded joints in accordance with 5.2.2, 5.3.6;

— estimated sizes of cylinders — diameter and wall thickness according to 5.1.4;

— strength and leakage of cylinders according to 5.1.13;

— absence of inadmissible defects of the threads of surfaces and welded joints of cylinders in accordance with 5.1.11, 5.1.12, 5.3.7;

— failure pressure and the factor of safety of the cylinders according to 5.1.14 and formulas (1) and (2):

MPa (1)

2,4. (2)

6.2 safety Requirements cylinders are provided with the manufacturing techniques and the following categories of tests:

— acceptance;

qualification;

— acceptance;

— periodic;

model.

Note — In the case of the standard series of cylinders shall be exposed to the tests (with the exception of the acceptance testing party) cylinders — typical representatives of the standard series, subject to a single technological process of making all the cylinders of the standard series. The results of the tests apply to all gas cylinders standard series provided by the manufacturer.

6.3 Certification of cylinders shall be in accordance with the requirements of the guidance document [8].

6.4 in the manufacture and operation of the cylinders must comply with the safety requirements of this standard and Rules [1].

6.5 in the manufacture and exploitation must be ensured protection of the cylinders from impact.

6.6 the Developer design shall establish and specify in the technical documentation of the estimated service life of the cylinders. The service life of the cylinders shall be not more than 20 years.

7 acceptance Rules

7.1 Acceptance tests

7.1.1 Acceptance testing of the prototype cylinders is carried out in accordance with the requirements of GOST 15.201 in the production of cylinders of a new design. The test is finished cylinders with identification numbers and represent the pilot production.

7.1.2 Acceptance tests carried out to confirm compliance of cylinders of a new design the requirements of this standard and design documentation, as well as for making a decision on the feasibility of setting cylinders on production.

7.1.3 Acceptance testing is carried out according to the requirements of the Administrative regulation [9] on the schedule and methodology agreed with Rostechnadzor with the participation of the representative of the Rostechnadzor expert organization (by agreement). The need to involve expert organizations is determined by the performance of the RTN.

7.1.4 the Manufacturer shall provide the acceptance fee package is designed technical documentation on the cylinders.

7.1.5 the Acceptance Committee selects cylinders of an experimental batch on the act, with indication of identification numbers of cylinders and types of inspection or testing.

7.1.6 the Results of each control or test execute the Protocol. The results of the acceptance testing, constitute an act, which must be signed by the member of the acceptance Committee.

7.1.7 the List of mandatory acceptance tests are given in table 1.


Table 1 — Acceptance testing of cylinders

The name of the control and test	The number of cylinders	Test method
Measurement control the essential dimensions and tolerances of form and position of surfaces	3	8.1
Visual inspection of interior and exterior surfaces, welds, thread the drain cap, plugs and flange	3	8.1
Monitoring of mass and capacity	3	8.2
Testing of welded joints by nondestructive methods	3	8.3
Control of mechanical properties of welded joints	-	8.4
A test of strength	3	8.5
Leak test	3	8.5
A fracture test	2	8.6
Visual inspection of external coating and marking	3	8.1

7.2 Qualification tests

Qualification tests of the installation or the first commercial batch is carried out at the production of cylinders for production in accordance with the requirements of GOST R 15.201. Qualification tests carried out with a program designed by the manufacturer to assess stability of technological process and readiness of the enterprise for serial production of cylinders.

According to the results of qualification tests issue an act, with the application protocols of each type test and control, which must be signed by the members of the Commission.

7.3 acceptance tests

7.3.1 acceptance tests of each batch is carried out in accordance with GOST 15.309 on finished cylinders with serial numbers representing the serial production. Acceptance tests conducting of manufacturer quality control Department to control the conformity of the cylinders to the requirements of this standard and determine whether the receiving party.

The number of cylinders in the batch shall not be more than 200 PCs, excluding cylinders for testing to destruction.

7.3.2 Each manufactured batch of cylinders shall be subjected to:

— testing to destruction hydraulic pressure. The test is one cylinder from the party on 8.6 for compliance 5.1.14;

— control of mechanical properties of butt welded joints on the specimens cut from the control welded joints, 8.4 for compliance with the requirements of 5.3.6;

— control mass and capacity. The control is subjected to one cylinder per shift in 8.2 for compliance with design documentation;

control of the relative out-of-roundness of the shell and the cylindrical part of the bottoms. The control is subjected to one cylinder per shift at 8.1 compliance with the requirements of 5.1.10 and design documentation.

7.3.3 Each cylinder of the party in the manufacturing process and after manufacture shall be subjected to:

— visual quality control of interior and exterior surfaces, welds, thread the drain cap, plugs and flange. Monitoring is carried out at 8.1 on compliance with the requirements of 5.1.11, 5.1.12, 5.3.7 and design documentation;

measuring and monitoring 8.1 compliance with the requirements of 5.1.7−5.1.9, 5.1.11, 5.3.2, 5.1.3 and design documentation;

control 100% longitudinal and circumferential welded joints non-destructive methods 8.3.1 in compliance with the requirements of 5.3.7;

— 100% inspection of welded joints welding the drain cap and flange non-destructive methods 8.3.2 for compliance 5.3.7;

the strength test the test pressure at 8.5 compliance 5.1.13;

— leak tested working pressure of 8.5 for compliance 5.1.13;

— visual inspection of marking for compliance 5.5;

— visual quality control of external coating for compliance with the requirements 5.1.16;

visual control of completeness and packaging for compliance with the requirements of 5.4 and 5.6.

7.3.4 in case of positive results of the acceptance testing party of the manufacturer draws up a document the quality of the party.

In case of negative results of the acceptance tests, the manufacturer identifies the cause of defects and taking measures to their elimination and determining the fix. The identified defective cylinders shall be rejected or sent back for revision.

Re-acceptance testing is carried out in full or in an abbreviated program, including only trials on which the identified Nonconformance at the first presentation. If the results of re-testing after improvements are unsatisfactory, all cylinders of the batch to be rejected.

7.4 Periodic test

7.4.1 Periodic tests are conducted to periodically confirm the quality of cylinders and stability of the technological process in accordance with GOST 15.309.

7.4.2 Periodic tests performed at least 1 time per year no less than three finished cylinders taken OTK manufacturer for compliance with the requirements of this standard. The results of the periodic tests be confirmed by the certificate.

7.5 routine tests

7.5.1 routine tests carried out in accordance with GOST 15.309 when you change the design, technology or materials of the cylinders, which may affect the characteristics associated with the secure operation of the cylinders.

The model tested is subjected to at least three of the cylinders for compliance with the requirements of this standard. The results of type tests be confirmed by the certificate.

8 Methods of control and testing

8.1 Visual and measuring control

8.1.1 Visual and measuring inspection of cylinders manufactured in accordance with the requirements of GOST 3242 and the guidance document [10].

8.1.2 the relative ovality at any cross section of the cylinder is calculated by the formula

%. (3)

The magnitude of the ovality at any cross section of the cylinder is calculated by the formula

. (4)

8.1.3 Control metric threads flange produced by gauges according to GOST and GOST 24997 2016. Control thread the drain cap and plugs W 27,8 GOST 9909 produce sizes according to GOST 24998.

8.2 Monitoring of mass and capacity

8.2.1 Control of mass produced by weighing an empty cylinder.

8.2.2 Monitoring capacity produced by weighing a water-filled container and calculate the volume of water by subtracting the mass of empty and full water tank.

The temperature of the water used to fill the balloon must be (20±5) °C. When using water with a temperature above the specified amount is determined based on its thermal expansion by multiplying the coefficient of thermal expansion. The values of the coefficients of thermal expansion of water are given in table 2.


Table 2 — Coefficients of thermal expansion of water

Water temperature, °C	30	40	50	60	70	80	90
Coefficient of thermal expansion of water	1,0043	1,0078	1,0121	1,0171	1,0228	1,0292	1,0361

8.2.3 Weighting of the cylinder is produced on scales with an accuracy of less than 0.2 kg.

8.3 Control of welded joints by nondestructive methods

8.3.1 Longitudinal and circumferential butt weld cylinders are subjected to 100% control penetrating radiation: radiographic method according to GOST 7512 or radioscopic method using x-ray installations or ultrasonic method according to GOST 17410, 20415 GOST, GOST 26266.

8.3.2 testing of welded joints welding the drain cap and flange is produced by capillary method according to GOST 18442 or magnetic particle method according GOST 21105, or ultrasonic method.

8.4 the Control of mechanical properties of welded joints

8.4.1 Control of mechanical properties longitudinal and circumferential welds of the cylinders produces a static tension testing and static bending of two samples for each test cut from the control welded joints. Weld control connections are produced separately from the welded elements are cylinders with a mandatory compliance with all conditions of the controlled welding of welded joints of tanks.

The test connection shall be constructed of the same materials, the same welding methods, same modes, same hardware, same welder as the cylinders, and at the same time as the applicable batch.

8.4.2 Test is produced in accordance with GOST 6996. The dimensions of the welded connections of the control must be chosen so as to have to cut two samples for each test and, if necessary, cut additional double number of samples for re-testing.

8.4.3 mechanical properties of welded joints should be determined as the arithmetic mean of the results obtained in the test samples, and meet the standards specified in design documentation. The mechanical properties considered unsatisfactory if the test results of at least one of the samples was below the normative values more than 10%.

8.4.4 Upon receipt of unsatisfactory results for any of the types of tests repeat tests are carried out on this type at twice the number of samples, cut from the very same control connection. The results of repeated tests are final.

8.5 Test for strength and tightness

8.5.1 strength Test cylinders to produce a hydraulic test in accordance with the requirements of regulation [1].

Hydraulic test test pressure (2,5+0,2) MPa aged for at least 2 min and subsequent reduction of the pressure to work (1,6+0,1) MPa, which make the inspection of cylinders.

Cylinders are considered satisfactory if no signs of rupture, leakage, sweating or visible residual deformations in welded joints and base metal.

8.5.2 leak Test cylinders produced after hydraulic testing pneumatic pressure (1,6+0,1) MPa in accordance with the requirements of regulation [1].

The cylinder is immersed in a water bath so that it was the water column from 20 to 40 mm the holding Time under pressure is not less than 2 min.

The appearance of bubbles on the surface of the water is not allowed.

8.5.3 permitted instead of hydraulic tests of cylinder strength to produce a pneumatic test stand with brancamaria, ensuring the safety tests.

The container should be in Broncemar under pneumatic test pressure (2,5+0,2) MPa, not less than 2 minutes, then the pressure was reduced to working (1,6+0,1) MPa, and the cylinder immersed in a bath of water to check for leaks.

8.6 Test of destruction

8.6.1 Test cylinders for destruction produced a gradual increase in hydraulic pressure. Not allowed the destruction of the container at a pressure less than 3,84 MPa.

The destruction must be shatterproof.

8.6.2 If the container has not stood the test of destruction, must be identified and eliminated the causes of premature destruction, and then conducted repeated tests on the destruction of the two cylinders. Upon receipt of unsatisfactory results, re-testing, the entire batch must be discarded.

9 Transportation and storage

9.1 Cylinders transporterowych all kinds of transport in accordance with the rules of cargo transportation applicable to each mode of transport.

9.2 In agreement with the customer allowed the shipment of cylinders in packaging and without packaging — with the use of safety rings and freeze cylinders in the vehicle preventing them from moving and colliding during transportation.

9.3 storage of the cylinders must match the group G2 according to GOST 15150.

10 Guidance manual for

10.1 Cylinders operate in accordance with the requirements of the Regulations [1] and the manufacturer’s instructions.

10.2 the Placement and securing of cylinders on vehicles produced in accordance with the requirements [11].

10.3 Cylinders in the process of operation must undergo a periodic technical inspection at least 1 time in two years in accordance with the requirements of the Regulations [1] and Techniques [12]. The results of technical examination of cylinders can be transferred for further operation, sent to repair or rejected. Repair of cylinders produced in accordance with the requirements of the Methodology [12].

11 manufacturer’s Warranty

11.1 the Manufacturer guarantees the consumer a line of cylinders to the requirements of this standard subject to the rules of operation, transportation and storage.

11.2 the Warranty period is 2 years from the date of putting the cylinder into operation.