1、CEN ENx28b-4-94 3404.589 0086835 394 BRITISH STANDARD Simple unfired pressure vessels designed to contain air or nitrogen Part 4. Aluminium alloy pressure vessels designed for air braking equipment and auxiliary pneumatic equipment for railway rolling stock The European Standard EN 286-4 : 1995 has
2、the status of a British Standard UDC 621 642.02-98-034 715 629.4-5yZ 620 1 62-777 BS EN 286-4: 1995 BS EN 2864 : 1995 Standards Board and comes into Amd. NO. Date effect on 15 February 1995 0 BSI 1995 Cooperating organizations Rxt affected The European Committee for Standardization, under whose supe
3、rvision this European Standard was prepared, comprises the national standards organizations of the following Western European countries: Austria Belgium Denmark Finland France Germany Greece Iceland Ireland Italy Luxembourg Netherlands Norway Portugal Spain Sweden Switzerland United Kingdom Oesterre
4、ichisches Normungsinstitut Institut belge de normalisation Dansk Standard Suomen Standardisoimisliito, r.y. Association franaise de normalisation Deutsches Institut fr Normung e.V. Hellenic Organization for Standardization Technological Institute of Iceland National Standards Authority of Ireland En
5、te Nazionale Italiano di Unificazione Inspection du Travail et des Mines Nederlands Nonnalisatie-instituut Norges Standardiseringsforbund Instituto Portugus da Qualidade Asociacin Espaola de Normalizacin y Certificacin Standardiseringskommissionen i Sverige Association suisse de normalisation Britis
6、h Standards Institution The following BSI references relate to the work on this standard: Committee reference PVE17 Draft for comment 9081699 DC ISBN O 580 2186 3 CEN EN*28b-4 94 W 3404589 O086837 Lb7 m BS EN 286-4 : 1995 Contents Page Cooperating organizations Inside front cover National foreword i
7、 Foreword 2 Text of EN 286-4 3 National annex NA (informative) Committees responsible National annex NB (informative) Cross-references Inside back cover Inside back cover National foreword This British Standard has been prepared under the direction of the Pressure Vessel Standards Policy Committee a
8、nd is the English language version of EN 286-4 : 1994 Simple unfired pressure vessels designed to contain air or nitrogen - Part 4: Aluminium alloy pressure vessels designed for air braking equipment and auxiliary pneumatic equipment for railway rolling stock, published by the European Committee for
9、 Standardization (CEN). EN 286-4 was produced as a result of international discussions in which the UK took an active part. Compliance with a British Standard does not of itself confer immunity from legal obligations. i EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 286-4 September 1994 UDC 62
10、1.642.02-98-034.715 : 629.4-592 620.1 : 62-777 Descriptors: Railway rolling stock, brakes, pneumatic equipment, pressure vessels, tanks containers, aluminium alloys, design, computation, production control, weld defects, acceptability, assembling, certification, marking English version Simple unfire
11、d pressure vessels designed to contain air or nitrogen - Part 4: Aluminium alloy pressure vessels designed for air braking equipment and auxiliary pneumatic equipment for railway rolling stock Rcipients pression simples, non soumis la flamme, destins contenir de lair ou de lazote - Partie 4: Rcipien
12、ts pression en alliages daluminium destins aux quipements pneumatiques de freinage et aux quipements pneumatiques auxiliaires du matriel roulant ferroviaire Einfache unbefeuerte Druckbehlter fr Luft oder Stickstoff - Teil 4: Druckbehlter aus Aluminiumlegierungen fr Druckluftbremsanlagen und pneumati
13、sche Hilfseinrichtungen in Schienenfahrzeugen This European Standard was approved by CEN on 1994-09-09. CEN members are bound to comply with the CENKENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
14、Up-to-date lists and bibliographical references concerning such national stan- dards may be obtained on application to the Central Secretariat or to any GEN member. The European Standards exist in three official versions (English, French, German). A version in any other language made by translation
15、under the responsibility of a GEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies ofAustria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Nethe
16、rlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Standardization Comit Europen de Normalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1050 Brussels 1994 Copyright reserved to CEN members Ref. No. EN 286-4 : 1994 E
17、 CEN EN*EBb-4 94 3404589 0086839 T3T = Page 2 EN 286-4 : 1994 Foreword This European Standard was prepared by CEN/TC 54, Unfired pressure vessels, of which the secretariat is held by BSI. This European Standard has been prepared under a Mandate given to CEN by the European Commission and the Europea
18、n Free Trade Association, and supports essential requirements of the EC Directive(s). CEN/TC 54 decided to submit the final draft for formal vote by its resolution. The result was positive. This part is one of a series of four. The other Parts are : Part 1: Design, manufacture and testing Part 2: Pr
19、essure vessels for.air braking and auxiliary systems for motor vehicles and their trailers Part 3: Steel pressure vessels designed for air braking equipment and auxiliary pneumatic equipment for railway rolling stock This European Standard shall be given the status of a national standard, either by
20、publication of an identical text or by endorsement, at the latest by March 1995, and conflicting national standards shall be withdrawn at the latest by March 1995. According to the CENKENELEC Internal Regulations, the following countries are bound to implement this European Standard: Austria, Belgiu
21、m, Denmark, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain and United Kingdom Contents Foreword 1 Scope 2 Normative references 3 Symbols 4 Materials 5 Design Page 2 3 3 4 4 5 6 Inspection and drainage bosses 13 7 Marking 13 8 Corrosion protection 1
22、3 9 Qualification of welding procedures 14 10 Qualification of welders and welding operators 14 11 Testing of the vessels 17 12 Certification procedures 24 13 Information to be supplied at the time of invitation to tender and time of order 24 14 Delivery 24 15 Documentation to accompany the vessel 2
23、4 Annex A (normative) Verification 25 Annex B (normative) Declaration of conformity - Surveillance 25 Annex C (normative) Design and manufacturing schedules 27 Annex D (normative) Type examination 27 Annex E (normative) Content of the manufactured record 28 Annex F (informative) Assembly of the vehi
24、cles 28 Annex G (informative) Service surveillance of vessels 31 CEN EN*Z86-4 74 W 3404589 0086840 751 W 1 Scope 1.1 This Part of this European Standard is applicable to simple unfired aluminium alloy pressure vessels, referred to as vessel in this standard, designed for air braking equipment and au
25、xiliary pneumatic equipment for railway rolling stock (see 1.6). 1.2 The vessels to this standard are: a) made from a single shell; b) made from aluminium alloy; c) fabricated by welding; d) used at a maximum working pressure of 10 bar; e) the product of the maximum working pressure (in bar) and the
26、 volume (in litre): 500 bar litres e,+c ecs = K, 20f + P The minimum design stress shall be taken from table 1. NOTE. It has been established from the standards quoted in this part that 0,3Rm is always greater than 0,6R,. The values of P and K, to be taken into account are : a) case no. 1: P 2 1,15P
27、8 and K, = 1 for automatic welding and when tests are carried out in acordance with 11.1.2.1; b) case no. 2: P 2 1,3Ps and K, = 1 for automatic welding and when tests are carried out in accordance with 11.1.2.2; c) case no. 3: P 2 1,25Ps and K, = 1,15 for welding using a non-automatic process and wh
28、en tests are carried out according to 11.1.1. 5.1.4.3 Calculation of the thickness of the ends ech The end thickness shall be calculated in the following manner: a) Select the values off from table 1, and with P = P, calculate Pllof. CEN ENx28b-4 94 W 3404589 0086844 3T7 Page 7 EN 286-4 : 1994 R (no
29、minal) = 0, 0,10, recess welded bosses (see figures lla and 1 lb); b) welded reinforcing plates and recess welded bosses (see figure llc). Adequate reinforcement shall be provided in all planes passing through the axis of the opening. 5.2.3.2 Reinforcement of opening Only bosses of the full penetrat
30、ion type as shown in figures lla and llb may be used. /A P I I Figure lla. Reinforcement of cylindrical shell with boss Af b +I I 1 Figure llb. Reinforcement of spherical shell with boss Figure llc. Reinforcement of spherical shell by reinforcing plate and boss Figure 11. Reinforcement of opening Th
31、e length of the boss reinforcement, used in equation (3) for determining Ab shall not be greater than I, see equation (211: The value of erb used for determining Aa in equation (3) shall not be more than twice ers. The following condition shall also be complied with: contributing to the Irh 5 ITS (2
32、) (3) 5.2.3.3 Reinforcement by reinforcing plate and boss One of the following two conditions shall be complied with: - the permissible stress fb is less than stress f: Pl10 (A, + 0,5(Afs +Ab + 0,7Af,) _ 500 mm) c) circularity of the cylindrical body d) straightness of any generating line of the cyl
33、indrical body * 0,O1Do;2 d) straightness of any generating line of the cylindrical body f o,01L;2 e) volume of the vessel in the as-delivered state f 3,5 %. In addition, the wall of the vessels shall be free of localized defects such as sudden local irregularities, bumps, flats, cavities, folds, too
34、l marks or visible symmetry defects. Cavities or bumps are permitted provided that they connect with the surrounding surface with gentle slopes f 7 mm; f 3 mm; 0,6 %; 0,01D,;2 Page 23 EN 286-4 : 1994 not exceeding 25% (14”) and with rounding of radius greater than 50 mm. Their dimensions shall not e
35、xceed : f) radially - + 3 mm; g) longitudinally 0,25 L; h) transversely 71DJ20. In addition, surface scratches are permitted as long as they are less than 0,l mm deep. Acceptance of a concentration of scratches shall be the subject of agreement between the manufacturer and the client. 11.3 Pressure
36、test Each vessel with all its fittings (bosses, brackets, etc.) shall be subjected to a hydrostatic test, prior to the application of the protective coating, equivalent to a pressure of 1,5 times the design pressure, i.e.: a) 17,25 bar when the design pressure is taken as 11,5 bar (case no. 1 - 5.1.
37、4.2); b) 19,5 bar when the design pressure is taken as 13 bar (case no. 2 - 5.1.4.2); c) 18,75 bar when the design pressure is taken as 12,5 bar (case no. 3 - 5.1.4.2). in the presence of a person of recognized competence (see clause 12). This pressure shall be maintained for a sufficient length of
38、time to permit a visual examination of all the surfaces and all the welded joints. The vessel shall show no sign of plastic deformation or leakage. Subject to agreement, a pneumatic test may be carried out on each vessel, at the pressure defined above. WARNING. The pneumatic test is potentially a mu
39、ch more dangerous operation than the hydraulic test in that, irrespective of the size of the vessel, any failure during testing may result in an explosion. It should therefore only be carried out after consultation with the inspection body and having ensured that the safety measures taken comply wit
40、h current legislation of the country in which the test is carried out. All vessels which fail the pressure test shall be rejected. Repairs may be permitted, with the agreement of the client network, but in this case the pressure test shall be repeated. 2The tolerances of shape and position are set o
41、ut in IS0 1101. CEN ENx28b-4 94 3404589 0086861 486 Verification Verification or declaration of conformity” and surveillance (and special documents) Page 24 EN 286-4 : 1994 I See annex A See annex A See annex B 12 Certification procedures This standard specifies three classes of vessel to which the
42、certification procedure set out in table 10 applies. Verification” or declaration of conformity (and special documents) 13 Information to be sup lied at the time of order The invitation to tender and order, to which is attached the final drawing of the vessel, shall indicate the number of this stand
43、ard and specify the following, if they have not already been specified in the drawing or the documents attached to it: time of invitation to ten 8 er and the a) the dimensions and volume of the vessel; b) the aluminium alloy or alloys, together with the number of the reference standard, from which t
44、he shell and ends are to be made (see clause 4); c) the type of shell/end joints (see 5.1.5.2); d) the shape of the openings and their welding to the vessel (see 5.2.4); e) the location of the openings (see clause 6); f) whether the marking is stamped in the metal or on a plate (see clause 7); g) th
45、e marks which the vessel shall have and their location on it (see 7.4); h) corrosion protection measures (see clause 8); j) a drawing showing how the vessel is assembled on the vehicle (see annex F); k) the requirements for service surveillance (see informative annex G). See annex A See annex B 14 D
46、elivery After complete drying of the inside walls, the vessel in the delivery condition shall have all its openings plugged with plastic stoppers or some other means to ensure that the inside of the vessel is free from dust, water or any other foreign bodies. Prior to despatch, the vessel shall be s
47、uitably protected to avoid any damage (impact, deformation . . . ) during transport. The packing shall be determined by the railway customer and the manufacturer. 15 Documentation to accompany the vessel The documentation to accompany the vessel shall include : a) particulars given on the vessel nam
48、eplate, including the serial identification; b) the use for which the vessel has been designed; c) the installation and maintenance requirements where they differ from those given in annexes F and G respectively; d) a declaration that the vessel is in accordance with the requirements of this Europea
49、n Standard (see annex BI; e) for information to the customer, a statement on the test certificate that there shall be no welding operations carried out on pressurized parts of the vessel. The documentation shall be in the language, or languages, of the country of destination. Table 10. Classification of vessels Class 1 Greater than 3000 bar litres and not more than 10000 bar litres Class 2 _ Greater than 200 bar litres and not more than 3000 bar litres Class 3 Greater than 50 bar litres and not more than 200 bar litres
