1、 STDOBSI BS EN LYb4-3-ENGL 2000 I Lb24bbY 0853037 803 I BRITISH STANDARD Wansportable gas cylinders - Specification for the design and construction of refillable transportable seamless steel gas cylinders of water capacities from 0,5 litre up to and including 150 litres - Part 3: Cylinders made of s
2、eamless stainless steel with anR, value of less than 1 100 IMPa The European Standard EN 19643:Z has the status of a British Standard ICs 23.020.30 BS EN 1964-3:2000 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITED BY COPYRIGHT LAW - STD-ES1 ES EN LTb4-3-ENGL 2000 1bt4bb 0851038 74T direction of
3、 the Enguieering Amd. No. Date Sector Committee, was published under the authority of the Standards Committee and comes into effect on 15 May 2000 BS EN 19643:2000 Comments National foreword This British Standard is the official English language version of EN 19643:2000. The UK participation in its
4、preparation was entrusted by Technical Committee pvE/3, Gas containers, to Subcommittee PVE/3/3, Ii.ansportable gas containem - Cylinders design and construction and testing at time of manufacture, which has the responsibility to: - aid enquirers to understand the tea - present to the responsible Eu
5、ropean committee any enquiries on the - monitor related intemational and European developments and promulgate interpretation, or proposals for change, and keep the UK interests informed; them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secret
6、ary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI standards Cataiogue under the section entitled “Intematond Standards Correspondence Index“, or by using the “Find“ facility of the BSI Standards Ele
7、ctronic Caalogue. A British Standard does not purport to include ail the necessary provisions of a contract. Users of British standards are responsible for their correct application Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This do
8、cument comprises a front cover, an inside front cover, the EN title page, pages 2 to 54, an inside back cover and back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Ca BSI 05-2000 ISBN O 5sO 34823 4 I l STD-BSI BS EN 1964-3-ENGL 2000 M 3624bb
9、9 085L039 b8b M EUROPEAN STANDARD EN I9643 NORME EUROPEENNE EUROPASCHE NORM February 2000 ICs 23.020.30 English version Transportable gas cylinders - Specification for the design and construction of refillable transportable seamless steel gas cylinders of water capacities from 0,5 litre up to and in
10、cluding 150 litres - Part 3: Cylinders made of seamless stainless steel with an Rm value of less than I 100 MPa Bouteilles gaz transportables Spcifications pour la conception et la fabrication de bouteilles gaz rechargables et transportables en acier sans soudure, dune capacit en eau comprise entre
11、0,5 lire et 150 lares inclus - Partie 3: Bouteilles en acier inoxydable sans soudure ayant une valeur Rm infrieure a 1 100 MPa Ortsbewegliche Gasflaschen - Gestaltung und Konstruktion von nahtlosen wiederbefllbaren ortsbeweglichen Gasflaschen aus Stahl mit einem Fassungsraum von 0,5 Liter bis einsch
12、lielich 150 Liter - Teil 3: Nahtlose Flaschen aus nichtrostendem Stahl mit einem Rm-Wert von weniger als 1 100 MPa This European Standard was approved by CEN on 11 December 1999. CEN members are bound to comply with the CENICENELEC Internal Regulations which stipulate the conditions for giving this
13、Europsen Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning sich national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (Eng
14、lish, French, German). A version in any other language made by traislation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as tie offcial versions. CEN members are the national standards bodies of Austria, Belgium, Czech Repu
15、blic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Central Secretariat: rue de Stassar
16、t, 36 8-1050 Brussels H/D 2 0,20 b 2 u for HID 2 0,40. In order to obtain a satisfactory stress distribution in the region where the end joins the cylindrical part, any thickening of the end that may be required shall be gradual from the point of juncture. For the application of this rule, the point
17、 of juncture between the cylindrical part and the end is defined by the horizontal line indicating dimensionH in Figure 1. Shape B shall not be excluded from this requirement. The cylinder manufacturer shall prove by the pressure cycling prototype test as required in A. 1 that the design is satisfac
18、tory. O BSI 05-2000 STDmBSI BS EN l1964-3-ENGL 2000 3b24bb9 0853050 247 Page 12 EN 1964-3 12000 L I Key 1 Cylindrical part Figure 1 - Typical convex ends O BSI 05-2000 STDmBSI BS EN LYb4-3-ENGL 2000 I Lb24bb9 0851051 183 m Page 13 EN 1964-3:2000 5.4 Calculation of concave base ends When concave base
19、 ends are used, the dimensions defined in Figure 2 shall be not less than the following calculated values: al = 2a; a2 = 2a; h = 0,120; r = 0,0750. o t Figure 2 - Concave base ends In order to obtain a satisfactory stress distribution, the thickness of the cylinder shall increase progressively in th
20、e transition area region between the cylindrical part and the base, and the wall shall be free from defects. The cylinder manufacturer shall prove by the pressure cycling prototype test as required in A. 1 that the design is satisfactory. 5.5 Neck design 5.5.1 The external diameter and thickness of
21、the formed neck end of the cylinder shall be adequate for the torque applied in fitting the valve to the cylinder. The torque may vary according to the diameter of thread, the form of thread, and the sealant used in the fitting of the valve. NOTE For recommended valving torques see EN IS0 13341. 5.5
22、.2 expansion of the neck during initial and subsequent fitting of the valve into the cylinder. Where the cylinder is specifically designed to be fitted with neck reinforcement, such as a neck-ring or shrunk-on collar, this may be taken into account (see EN IS0 13341). The thickness of the wall in th
23、e cylinder neck shall be sufficient to prevent permanent O BSI 05-2000 STDOBSI BS EN 3964-3-ENGL 2000 = Lb24bb9 0853052 OIT D Page 14 EN 1964-32000 5.6 Foot-rings As agreed between the parties, a foot-ring, if provided, shall be sufficiently strong and made of material compatible with that of the cy
24、linder. In addition, the shape should preferably be cylindrical and shall give the cylinder sufficient stability. The foot-ring shall be secured to the cylinder by a method other than welding, brazing or soldering. Any gaps which may form water traps shall be sealed to prevent ingress of water, by a
25、 method other than welding, brazing or soldering. 5.7 Neck-rings As agreed between the parties, a neck-ring, if provided, shall be sufficiently strong and made of material compatible with that of the cylinder, and shall be securely attached by a method other than welding, brazing or soldering. The m
26、anufacturer shall ensure that the axial load to remove the neck-ring is greater than 10 times the weight of the empty cylinder and not less than 1 O00 N, also that the minimum torque required to turn the neck-ring is greater than 100 N-m. 5.8 Design drawing A fully dimensioned drawing shall be prepa
27、red which includes the specification of the material, and details of the permanent fittings. Q BSI 052000 STDmBSI BS EN L964-3-ENGL 2000 Lb24669 0853053 T56 W Page 15 EN 1964-3:2000 6 Construction and workmanship 6.1 General The cylinder shall be produced by: a) b) c) d) forging or drop forging from
28、 a solid ingot or billet; or manufacturing from seamless tube; or pressing from a flat plate; or cold working or cryoforming preform. Metal shall not be added in the process of closure of the end. Manufacturing defects shall not be corrected by plugging of bases. 6.2 Wall thickness Each cylinder sha
29、ll be examined for thickness. The wall thickness at any point shall not be less than the minimum thickness specified. 6.3 Surface defects The internal and external surfaces of the finished cylinder shall be free from defects which would adversely affect the safe working of the cylinder. See annex B.
30、 6.4 Ultrasonic examination Except as identified in C.6, all cylinders shall be ultrasonically examined for defects in accordance with annex C. 6.5 Neck threads The internal neck threads shall conform to a recognized standard agreed between the parties to permit the use of a corresponding valve, thu
31、s minimizing neck stresses following the valve torquing operation. Internal neck threads shall be checked using gauges corresponding to the agreed neck thread, or by an alternative method agreed between the parties. For example, where the neck thread is specified to be in accordance with EN 629-1, t
32、he corresponding gauges are specified in EN 629-2. Particular care shall be taken to ensure that neck threads are accurately cut, are of full form and free from any sharp profiles, e.g. burrs. 8 BSI 05-2000 Page 16 EN 1964-32000 6.6 Out-of roundness The out-of-roundness of the cylindrical shell, i.e
33、. the difference between the maximum and minimum outside diameters at the same cross-section, shall not exceed 2 % of the mean of these diameters. 6.7 Mean diameter The mean external diameter shall not deviate more than +1 % from the nominal design diameter. 6.8 Straightness The maximum deviation of
34、 the cylindrical part of the shell from a straight line shall not exceed 3 mm per metre length. 6.9 Stability For a cylinder designed to stand on its base, the deviation from vertical shall be less than 1 % of its height, and the outer diameter of the surface in contact with the ground shall be grea
35、ter than 75 % of the nominal outside diameter. Q BSI 05-2000 STD.BS1 BS EN 2964-3-ENGL 2000 1624669 0853055 829 Page 17 EN 1964-3 12000 7 Tests 7.1 Mechanical tests 7.1.1 General requirements All tests for checking the material properties of gas cylinders shall be carried out on material fiom cylind
36、ers on which all operations affecting mechanical properties have been completed. Such cylinders need not have been pressure tested. For locations of test pieces, see Figure 3. Where cold working or cryoforming causes inhomogeneity of mechanical properties within the cylinder, sufficient sets of test
37、 pieces shall be taken in accordance with Figure 3 to prove the design. c Z Key 1 Bend test pieces 2 Impact test pieces (alternative positions shown dotted) 3 Tensile test pieces Figure 3 - Location of test pieces 8 BSI 05-2000 STDmBSI BS EN 19b4-3-ENGL 2000 Lb24bbS 0853056 765 Page 18 EN 1964-3 200
38、0 7.1.2 Test procedures 7.1.2.1 Tensile test 7.1.2.1.1 of the cylinder by using either rectangular specimens or machined round specimens. The tensile test shall be carried out on material taken fkom the cylindrical part For rectangular specimens, the tensile test shall be carried out according to EN
39、 10002-1 on a test piece shaped in accordance with Figure 4 and with a gauge length Lo = 5,65 if the wall thickness does not permit a final test piece width of 1 O mm, the width shall be as near as practicable to the nominal thickness of the cylinder wall. 7.1.2.4.2 The minimum acceptable values are
40、 specified in Table 2. Table 2 - Minimum acceptable impact strength values 8 BSI 052000 Page 21 EN 1964-312000 7.1.2.5 Intergranular corrosion test 7.1.2.5.1 This test is required on austenitic and duplex stainless steel grades only. 7.1.2.5.2 The test shall be carried out in accordance with EN IS0
41、365 1-2. 7.1.2.5.3 a specimen geometry suitable for bend testing. The test requires that specimens be taken from a part of the cylinder providing 7.2 Hydraulic burst test 7.2.1 Procedure 7.2.1.1 Test installation The test equipment as shown in Figure 6 shall be capable of operation in accordance wit
42、h the test conditions specified in 7.2.1.2, and of producing accurately the information required by 7.2.2 and 7.2.3. The test shall be carried out with the cylinder at a temperature of less than 40 OC. 0 BSI 05-2000 STDmBSI BS EN L7bh-3-ENGL 2000 m Lb24bb9 085LOb0 L9b W Page 22 EN 1964-3:2000 Key 1
43、Test fluid reservoir 2 Tank for measurement of test fluid (The test fluid reservoir may be used as a measuring tank.) 3 Pump 4 Pressure gauge 5 Pressure/volumetric expansion curve recorder 6 Vent or air release valve 7 Test well Figure 6 - Typical hydraulic burst test installation 7.2.1.2 Test condi
44、tions As the cylinder and test equipment are being filled with water, care shall be taken to ensure that no air is trapped in the circuit by operating the hydraulic pump until water is discharged from the vent or air-release valve. During the test, pressurization shall be carried out in two successi
45、ve stages. a) test up to a pressure value corresponding to the initiation of plastic deformation. In the first stage, the strain rate in the elastic range shall not exceed that in the tensile b) as is possible until the cylinder bursts. In the second stage, the pump discharge rate shall be maintaine
46、d at as constant a level O BSI 052000 STD-BSI BS EN L964-3-ENGL 2000 = Lb24bb9 085LObL O22 Page 23 EN 1964-3 :2000 7.2.2 Interpretation of test 7.2.2.1 The following procedures shall be used for the interpretation of the test results. - Determination of the burst pressure (pb) and of the yield press
47、ure (p,) attained during the test. - Examination of the tear and of the shape of its edges. 7.2.2.2 The measured burst pressure (pb) shall be: The observed yield pressure by) shall be: 1 F Py -Ph- 7.2.2.3 The burst test shall not cause fragmentation of the cylinder. 7.2.2.4 The main fracture in the
48、cylindrical portion shall not be brittle, i.e. the fracture edges shall be inclined with respect to the wall. The tear shall not reveal a significant defect in the metal and the tear shall not extend beyond the centre line of the cylinder at the neck or the base. For cylinders with wall thickness le
49、ss than 7,5 mm, the fracture shall be acceptable only if it conforms to one of the following descriptions. a) For quenched and tempered cylinders: - longitudinal, without branching (Figure 7); or - longitudinal, with a side branching at each end which in no case extends beyond a quarter of the cylinder circumference from the fracture (Figure 8). b) For cryoformed or solution annealed cylinders: - longitudinal, without branching (Figure 7); or - longitudinal, with a side branching at each end which in no case exceeds half the cyl
