1、BS EN 14917:2009ICS 23.040.99NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDMetal bellowsexpansion joints forpressure applications+A1:2012National forewordThis British Standard is the UK implementation of EN 14917:2009+A1:2012. It supersedes BS EN 14917:2009, w
2、hich is withdrawnBSI, as a member of CEN, is obliged to publish EN 14917:2009 as a British Standard. However, attention is drawn to the fact that during the development of this European Standard, the UK committee voted against its approval as a European Standard.The reason for this negative vote was
3、 that clause 6.1.2.3, and its associated table, either does not specify a factor for the relationship between the minimum tensile strength and the allowable stress in the main and general pressure bearing parts or it specifies a factor of 3:1. It has been customary in the UK (and it is consistent wi
4、th ISO 15348 and EJMA together with its ANSI and ASME Codes) to use a minimum factor of safety of 4:1.The start and finish of text introduced or altered by amendment is indicated in the text by tags. Tags indicating changes to CEN text carry the number of the CEN amendment. For example, text altered
5、 by CEN amendment A1 is indicated by !“.The UK participation in its preparation was entrusted to Technical Committee GSE/42, Gas fittings and connections including metal hose and hose assemblies.A list of organizations represented on this committee can be obtained on request to its secretary.This pu
6、blication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.BS EN 14917:2009+A1:2012This British Standardwas published under theauthority of the St
7、andardsPolicy and StrategyCommittee on 31 March2009 The British Standards Institution 2012. Published by BSI Standards Limited 2012.Amendments/corrigenda issued since publicationDate Comments 30 April 2012 Implementation of CEN amendment A1:2012ISBN 978 0 580 73260 7EUROPEAN STANDARD NORME EUROPENNE
8、 EUROPISCHE NORM EN 14917:2009+A1 March 2012 ICS 23.040.99 Supersedes EN 14917:2009English Version Metal bellows expansion joints for pressure applications Compensateurs de dilatation soufflets mtalliques pour appareils pression Kompensatoren mit metallischen Blgen fr Druckanwendungen This European
9、Standard was approved by CEN on 6 September 2008 and includes Amendment 1 approved by CEN on 10 January 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alter
10、ation. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made
11、 by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estoni
12、a, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATIO
13、N EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14917:2009+A1:2012: EEN 14917:2009+A1:2012 (E) 2 Contents Page Foreword 5Introduction .61 Sc
14、ope 72 Normative references 73 Terms and definitions 104 Classification . 114.1 Classification of expansion joints . 114.1.1 Axial . 114.1.2 Angular 114.1.3 Lateral 114.1.4 Universal 114.2 Classification of the parts of expansion joints 164.2.1 !Main pressure-bearing parts (A)“ . 164.2.2 Pressure pa
15、rts other than main pressure-bearing parts (B) 164.2.3 Attachments to main pressure-bearing parts and to pressure parts (C) 164.2.4 Other parts (D) . 165 Materials 185.1 General . 185.1.1 Materials for pressure-bearing parts 185.1.2 Materials for parts attached to pressure-bearing parts 185.1.3 !Mat
16、erials for non-pressure parts“ 185.1.4 Documentation 185.2 Pressure-bearing parts 185.2.1 Bellows 185.2.2 Other pressure-bearing parts 195.2.3 Ductility 195.2.4 Brittle fracture . 195.3 Material documentation . 206 Design 246.1 General . 246.1.1 Symbols and general factors . 246.1.2 Basic design cri
17、teria . 316.1.3 Additional loadings. 326.2 Bellows 336.2.1 Purpose 336.2.2 Conditions of applicability . 336.2.3 U-shaped unreinforced bellows 386.2.3.1 General . 386.2.4 U-shaped reinforced bellows . 536.2.5 Toroidal bellows 616.2.6 Specific design fatigue curves 696.2.7 Axial, lateral or angular d
18、isplacement of bellows . 696.2.8 Equivalent axial displacement per corrugation . 756.2.9 Forces and moments on pressurised expansion joints . 806.2.10 Torsion acting on bellows (unreinforced or reinforced). 916.3 Hardware 916.3.1 General . 916.3.2 Design parameters 926.3.3 Design temperature 966.3.4
19、 Parts . 966.4 Internal sleeve . 986.4.1 Scope . 986.4.2 Additional symbols . 98BS EN 14917:2009+A1:2012EN 14917:2009+A1:2012 (E) 3 6.4.3 Flow velocity 986.4.4 Design rules . 1007 Manufacturing 1027.1 General . 1027.2 Materials . 1027.2.1 General . 1027.2.2 Material traceability . 1027.3 Permanent j
20、oints . 1027.3.1 General . 1027.3.2 Process and personal . 1027.3.3 Repair and rework during manufacturing . 1037.4 Forming of the bellows . 1037.4.1 Forming processes . 1037.4.2 Heat treatment . 1047.5 Tolerances 1047.5.1 General . 1047.5.2 Bellows . 1047.5.3 Expansion joint 1057.6 Production tests
21、 1068 Testing, inspection and documentation . 1068.1 Abbreviations . 1068.2 General . 1068.3 !Documents“ 1068.4 In-process inspection and testing . 1078.4.1 General . 1078.4.2 Materials . 1078.4.3 Permanent joints . 1078.4.4 Non-destructive testing of welds . 1098.5 NDT methods . 1148.5.1 General .
22、1148.5.2 Acceptance criteria . 1158.5.3 Personnel qualification and approval . 1158.5.4 Reports . 1158.6 Final assessment and documentation 1188.6.1 General . 1188.6.2 Final inspection . 1188.7 Documentation 1208.7.1 Final documentation package 1208.7.2 Declaration/certification 1218.7.3 Operating i
23、nstructions 1219 Marking and labelling 12110 Handling and installation 12310.1 General instructions 12310.2 Packaging and storage . 12310.3 Installation 12310.4 Unrestrained expansion joints . 12410.5 Restrained expansions joints 124Annex A (informative) Categories of expansion joints . 125Annex B (
24、normative) Specification for materials 1.4828, 1.4876, 2.4360 and 2.4858 . 136Annex C (informative) Incorporation of expansion joints into pressure vessels and piping . 141Annex D (informative) Calculation methods for systems of pipes containing expansion joints . 160Annex E (informative) Overview o
25、f the design of expansion bellows . 177Annex F (informative) Procedure for setting-up a design fatigue curve . 182Annex G (informative) Polynomial approximations for coefficients Cp, Cf, Cd191BS EN 14917:2009+A1:2012EN 14917:2009+A1:2012 (E) 4 Annex H (informative) Required design data and informati
26、on 194Annex I (informative) Expansion joints risk analyses 195Annex J (informative) Material properties and material groups 197Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 97/23/EC . 203Bibliography . 205BS EN 14917:2009+A1:2012EN
27、14917:2009+A1:2012 (E) 5 Foreword This document (EN 14917:2009+A1:2012) has been prepared by Technical Committee CEN/TC 342, “Metal hoses, hose assemblies, bellows and expansion joints“, the secretariat of which is held by !SNV“. This European Standard shall be given the status of a national standar
28、d, either by publication of an identical text or by endorsement, at the latest by September 2012, and conflicting national standards shall be with-drawn at the latest by September 2012. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent righ
29、ts. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of the EU Directive 97/23/EC. For r
30、elationship with EU Directive 97/23/EC, see informative Annex ZA, which is an integral part of this document. This document includes Amendment 1, approved by CEN on 2012-01-08. This document supersedes EN 14917:2009. The start and finish of text introduced or altered by amendment is indicated in the
31、 text by tags ! “. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungar
32、y, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. BS EN 14917:2009+A1:2012EN 14917:2009+A1:2012 (E) 6 Introduction Metal bellows expansion joints are used as com
33、ponents in piping or as parts of pressure vessels. If an expansion joint is designed and manufactured according to this European Standard, the risk analysis is already undertaken, see Annex I. BS EN 14917:2009+A1:2012EN 14917:2009+A1:2012 (E) 7 1 Scope This European Standard specifies the requiremen
34、ts for design, manufacture and installation of metal bellows expansion joints for pressure applications, i.e. maximum allowable pressure greater than 0,5 bar. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated refer-ences, only
35、 the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 287-1, Qualification test of welders Fusion welding Part 1: Steels EN 473, Non destructive testing Qualification and certification of NDT personnel General princip
36、les EN 571-1, Non destructive testing Penetrant testing Part 1: General principles EN 764-4, Pressure equipment Part 4: Establishment of technical delivery conditions for metallic materials EN 764-5:2002, Pressure equipment Part 5: Compliance and inspection documentation of materials EN 970, Non-des
37、tructive examination of fusion welds Visual examination EN 1092-1, Flanges and their joints Circular flanges for pipes, valves, fittings and accessories, PN desig-nated Part 1: Steel flanges EN 1289:1998, Non-destructive examination of welds Penetrant testing of welds Acceptance levels EN 1290, Non-
38、destructive examination of welds Magnetic particle examination of welds EN 1291:1998, Non-destructive examination of welds Magnetic particle testing of welds Acceptance levels EN 1418, Welding personnel Approval testing of welding operators for fusion welding and resistance weld setters for fully me
39、chanized and automatic welding of metallic materials EN 1435:1997, Non-destructive examination of welds Radiographic examination of welded joints EN 1593, Non-destructive testing Leak testing Bubble emission techniques EN 1712:1997, Non-destructive examination of welds Ultrasonic examination of weld
40、ed joints Accep-tance levels EN 1713, Non-destructive examination of welds Ultrasonic examination Characterization of indications in welds EN 1714:1997, Non-destructive examination of welds Ultrasonic examination of welded joints EN 1779:1999, Non-destructive testing Leak testing Criteria for method
41、 and technique selection EN 10002-1, Metallic materials Tensile testing Part 1: Method of test at ambient temperature EN 10002-5, Metallic materials Tensile testing Part 5: Method of testing at elevated temperature EN 10028-1, Flat products made of steels for pressure purposes Part 1: General requir
42、ements !EN 10028-2:2009“, Flat products made of steels for pressure purposes Part 2: Non-alloy and alloy steels with specified elevated temperature properties BS EN 14917:2009+A1:2012EN 14917:2009+A1:2012 (E) 8 !EN 10028-3:2009“, Flat products made of steels for pressure purposes Part 3: Weldable fi
43、ne grain steels, normalized EN 10028-4, Flat products made of steels for pressure purposes Part 4: Nickel alloy steels with specified low temperature properties EN 10028-7:2007, Flat products made of steels for pressure purposes Part 7: Stainless steels EN 10045-1, Metallic materials Charpy impact t
44、est Part 1: Test method EN 10204:2004, Metallic products Types of inspection documents EN 10216-1, Seamless steel tubes for pressure purposes Technical delivery conditions Part 1: Non-alloy steel tubes with specified room temperature properties EN 10216-2, Seamless steel tubes for pressure purposes
45、Technical delivery conditions Part 2: Non-alloy and alloy steel tubes with specified elevated temperature properties EN 10216-3, Seamless steel tubes for pressure purposes Technical delivery conditions Part 3: Alloy fine grain steel tubes EN 10216-4, Seamless steel tubes for pressure purposes Techni
46、cal delivery conditions Part 4: Non-alloy and alloy steel tubes with specified low temperature properties EN 10217-1, Welded steel tubes for pressure purposes Technical delivery conditions Part 1: Non-alloy steel tubes with specified room temperature properties EN 10217-2, Welded steel tubes for pre
47、ssure purposes Technical delivery conditions Part 2: Electric welded non-alloy and alloy steel tubes with specified elevated temperature properties EN 10217-3, Welded steel tubes for pressure purposes Technical delivery conditions Part 3: Alloy fine grain steel tubes EN 10217-4, Welded steel tubes f
48、or pressure purposes Technical delivery conditions Part 4: Electric welded non-alloy steel tubes with specified low temperature properties EN 10217-5, Welded steel tubes for pressure purposes Technical delivery conditions Part 5: Submerged arc welded non-alloy and alloy steel tubes with specified elevated temperature properties EN 10217-6, Welded
