EN 14460-2018 Explosion resistant equipment.pdf

1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Explosion resistant equipmentBS EN 14460:2018National forewordThis British Standard is the UK implementation of EN 14460:2018. It supersedes BS EN 14460:2006, which is withdrawn.The UK participation in its preparation w

2、as entrusted to Technical Committee EXL/23, Explosion and fire precautions in industrial and chemical plant.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users

3、 are responsible for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 95737 6ICS 13.230Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the

4、 Standards Policy and Strategy Committee on 28 February 2018.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 14460:2018EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 14460January 2018ICS 13.230; 29.260.20 Supersedes EN 14460:2006EUROPEAN COMMITTEE FOR STANDAR

5、DIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGCEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2018 CEN Ref. No. EN 14460:2018: EAll rights of exploitation in any form and by any means reserved worldwide for CEN national MembersExplosion resistant equipmentAppar

6、eil rsistant lexplosion Explosionsfeste GerteThis European Standard was approved by CEN on 17 December 2017.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 alterat

7、ion. 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 by

8、 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, Estonia, F

9、inland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.English VersionEN 14460:20

10、18 (E)European forewordThis document (EN 14460:2018) has been prepared by Technical Committee CEN/TC 305 “Potentially explosive atmospheres - Explosion prevention and protection”, the secretariat of which is held by DIN.This European Standard shall be given the status of a national standard, either

11、by publication of an identical text or by endorsement, at the latest by July 2018, and conflicting national standards shall be withdrawn at the latest by July 2018.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN not be held re

12、sponsible for identifying any or all such patent rights.This document supersedes EN 14460:2006.This document has been prepared under a standardization request given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s).For r

13、elationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document.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

14、, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey

15、and the United Kingdom.2BS EN 14460:2018EN 14460:2018 (E)IntroductionThe principles of integrated explosion safety include the following measures the manufacturer needs to take:a) prevention of formation of explosive atmospheres;b) prevention of the ignition of the explosive atmospheres and;c) if an

16、 explosion nevertheless occurs, to halt it immediately and/or to limit the range of explosion flames and explosion pressures to a sufficient level of safety.If the ignition hazard assessment of the equipment shows that the prevention of ignition sources does not fulfil the requirements of the catego

17、ry for the intended use of the equipment, it is essential that methods according to c) are used.This standard specifies requirements for equipment that shall be explosion resistant. Explosion resistance is the term applied to the construction of an enclosure so that it can withstand an expected expl

18、osion pressure without rupture.The term “explosion resistance” may be applied to equipment, components and protective systems.3BS EN 14460:2018EN 14460:2018 (E)European foreword 2Introduction . 3European foreword 6Introduction . 71 Scope . 82 Normative references 83 Terms and definitions . 94 Explos

19、ion pressure shock resistant equipment 94.1 General . 94.2 Design procedure 94.3 Design pressure . 104.4 Design temperature . 104.5 Additional loads 104.6 Wall thickness allowance 105 Materials for pressure shock resistant design .115.1 General 115.2 Criteria for ductile materials 115.3 Criteria for

20、 brittle materials . 116 Explosion pressure shock resistant design .126.1 General 126.2 Design 126.2.1 Definition of permissible stresses126.2.2 Weld seam factor 136.2.3 Flanges . 136.3 Type testing of pressure shock resistant equipment 136.3.1 General. 136.3.2 Pressure test .146.3.3 Explosion test

21、146.4 Special requirements for bolted structures 146.5 Documentation of design and testing of pressure shock resistant equipment 156.5.1 Documentation of Design by Finite Element Methods .156.5.2 Documentation of Design by engineering standards 156.5.3 Documentation of testing 157 Documentation of q

22、uality of explosion pressure shock resistant equipment 167.1 General 167.2 Materials 167.3 Welding . 167.4 Quality test procedure for explosion pressure shock resistant design .167.4.1 Standard procedure (routine test) 167.4.2 Alternative procedure in specific cases .178 Information for use .188.1 M

23、arking 188.2 Accompanying documents . 18Annex A (informative) Calculation of design pressure for single vessels .20Annex B (informative) Explosion in pipes and interconnected vessels 21Annex C (normative) Use of Finite Element Analysis (FEA) for the design of explosion pressure shock resistant equip

24、ment 24Annex D (informative) Definition of permissible stresses .254Contents PageBS EN 14460:2018EN 14460:2018 (E)Annex E (informative) Examples for limitation of stress concentration 30Annex F (informative) Significant changes between this European Standard and EN 14460:2006 32Annex ZA (informative

25、) Relationship between this European Standard and the Essential Requirements of EU Directive 2014/34/EU aimed to be covered 35Bibliography .36 ISO ISO pub-date year All rights reserved 5BS EN 14460:2018EN 14460:2018 (E)European forewordThis document (EN 14460:2018) has been prepared by Technical Com

26、mittee CEN/TC 305 “Potentially explosive atmospheres - Explosion prevention and protection”, the secretariat of which is held by DIN.This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by July 2018, and

27、conflicting national standards shall be withdrawn at the latest by July 2018.Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN not be held responsible for identifying any or all such patent rights.This document supersedes EN 144

28、60:2006.This document has been prepared under a standardization request given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s).For relationship with EU Directive(s), see informative Annex ZA, which is an integral part o

29、f this document.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, Former Yugoslav Republic of Macedo

30、nia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.6BS EN 14460:2018EN 14460:2018 (E)IntroductionThe principles of

31、integrated explosion safety include the following measures the manufacturer needs to take:a) prevention of formation of explosive atmospheres;b) prevention of the ignition of the explosive atmospheres and;c) if an explosion nevertheless occurs, to halt it immediately and/or to limit the range of exp

32、losion flames and explosion pressures to a sufficient level of safety.If the ignition hazard assessment of the equipment shows that the prevention of ignition sources does not fulfil the requirements of the category for the intended use of the equipment, it is essential that methods according to c)

33、are used.This standard specifies requirements for equipment that shall be explosion resistant. Explosion resistance is the term applied to the construction of an enclosure so that it can withstand an expected explosion pressure without rupture.The term “explosion resistance” may be applied to equipm

34、ent, components and protective systems.7BS EN 14460:2018EN 14460:2018 (E)1 ScopeThis European Standard specifies requirements for explosion resistant equipment which will be able to withstand an internal explosion without rupturing and will not give rise to dangerous effects to the surroundings. It

35、is applicable to equipment (vessels and systems) where explosions are considered to be an exceptional load case.There are two types of explosion resistant equipment: explosion pressure resistant and explosion pressure shock-resistant equipment (see Figure 1).Figure 1 Explosion resistant equipmentExp

36、losion pressure resistant equipment is designed to withstand the explosion pressure without permanent deformation and will not give rise to dangerous effects to the surroundings. Since the design and calculation methods for explosion pressure resistant equipment are similar to those described in EN

37、13445-1 to -6 “Unfired pressure vessels” they are not repeated in this standard.For explosion pressure shock resistant equipment permanent deformation is allowed provided the equipment will not give rise to dangerous effects to the surroundings. This design has been developed especially for explosio

38、n protection purposes. This standard focusses on the requirements for explosion pressure shock resistant equipment.This standard is valid for atmospheres having absolute pressures ranging from 800 mbar to 1 100 mbar and temperatures ranging from 20 C to +60 C. This standard may also be helpful for t

39、he design, construction, testing and marking of equipment intended for use in atmospheres outside the validity range stated above, as far as this subject is not covered by specific standards.This standard applies to equipment and combinations of equipment where deflagrations may occur and is not app

40、licable to equipment and combination of equipment where detonations may occur. In this case, different design criteria for the required explosion resistance are applicable which are not covered by this standard.It is not applicable to equipment which is designed according to type of protection, flam

41、eproof enclosures “d” (EN 13463-3 or EN 60079-1).This standard does not apply to offshore situations.This standard is only applicable for equipment where metallic materials provide the explosion resistance. This standard does not cover fire risk associated with the explosions, neither with the mater

42、ials processed nor with the materials used for construction.2 Normative referencesThe following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the lat

43、est edition of the referenced document (including any amendments) applies.8 BS EN 14460:2018EN 14460:2018 (E)EN 10204:2004, Metallic products Types of inspection documentsEN 13018, Non-destructive testing Visual testing General principlesEN 13237:2012, Potentially explosive atmospheres Terms and def

44、initions for equipment and protective systems intended for use in potentially explosive atmospheresEN ISO 6892-1, Metallic materials Tensile testing Part 1: Method of test at room temperature (ISO 6892-1)EN ISO 9712, Non-destructive testing Qualification and certification of NDT personnel (ISO 9712)

45、EN ISO/IEC 80079-34, Explosive atmospheres Part 34: Application of quality systems for equipment manufacture (ISO/IEC 80079-34)3 Terms and definitionsFor the purposes of this document, the terms and definitions given in EN 13237:2012 and the following apply.3.1bolted structurestructures with bolted

46、connections of which the design is not covered in published standardsNOTE Bolted structures will be distinguished from flanged structures which can be designed according to engineering standards. Examples for bolted structures in the sense of this standard are rectangular flanges, fixing of metal sh

47、eets with bolts to a steel frame or overlapping sheet constructions.3.2maximum allowable explosion pressurep exmaxmaximum explosion pressure which the equipment will withstand4 Explosion pressure shock resistant equipment4.1 GeneralThis standard focusses on the requirements for explosion-pressure-sh

48、ock resistant equipment.With explosion-pressure-shock resistant equipment permanent deformation is allowed provided the equipment will not give rise to dangerous effects to the surroundings. The tolerable extent of effects on the surroundings depends on the intended use of the equipment. Formation o

49、f missiles or the rupture of individual parts of the equipment (e.g. gaskets) shall be considered as dangerous effects under any condition.In general, a distinction is made between the following designs: design for the maximum explosion pressure; design for the reduced explosion pressure in combination with explosion venting or explosion suppression.NOTE If explosions are part of the normal operation (allowed operation pressure) the design rules of this standard do not apply.4.2 Design procedureThe procedure for explosion pressure shock resistant design