1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 12542:2010LPG equipment and accessories Static welded steelcylindrical tanks, seriallyproduced for the storage ofLiquefied Petroleum Gas (LPG)having a volume not greatertha
2、n 13 m Design andmanufactureBS EN 12542:2010 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 12542:2010.It supersedes BS EN 12542:2002 and BS EN 14075:2002 which arewithdrawnThe UK participation in its preparation was entrusted to TechnicalCommittee PVE/19, LPG
3、containers and their associated fittings.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2010ISBN 978 0 580 6
4、2680 7ICS 23.020.30; 75.200Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 August 2010.Amendments issued since publicationDate Text affectedBS EN 12542:2010EURO
5、PEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12542 August 2010 ICS 23.020.30 Supersedes EN 12542:2002, EN 14075:2002English Version LPG equipment and accessories - Static welded steel cylindrical tanks, serially produced for the storage of Liquefied Petroleum Gas (LPG) having a volume not greate
6、r than 13 m - Design and manufacture Equipements pour gaz de ptrole liqufi et leurs accessoires - Rservoirs cylindriques fixes, ariens, en acier soud, fabriqus en srie pour le stockage de gaz de ptrole liqufi (GPL) ayant un volume infrieur ou gal 13 m - Conception et fabrication Flssiggas-Gerte und
7、Ausrstungsteile - Ortsfeste, geschweite zylindrische Behlter aus Stahl, die serienmig fr die Lagerung von Flssiggas (LPG) hergestellt werden, mit einem Fassungsvermgen bis 13 m - Gestaltung und Herstellung This European Standard was approved by CEN on 26 June 2010. CEN members are bound to comply wi
8、th the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management C
9、entre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the offi
10、cial versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slo
11、vakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwid
12、e for CEN national Members. Ref. No. EN 12542:2010: EBS EN 12542:2010EN 12542:2010 (E) 2 Contents Page Foreword 5Introduction .61 Scope 72 Normative references 73 Terms and definitions .94 Materials 104.1 Environmental . 104.2 Shells and ends. 104.3 Pressure parts other than shell or ends . 124.4 Pa
13、rts welded to the tank 134.5 Welding consumables 134.6 Inspection documents for materials . 134.7 Non metallic materials (gaskets) . 135 Design 135.1 General . 135.2 Temperature 145.3 Pressure . 145.4 Vacuum conditions . 145.5 Support loadings 145.6 Lifting lugs loadings . 156 Openings . 156.1 Gener
14、al . 156.2 Reinforcement . 156.3 Position of welds and openings 157 Workmanship and manufacture 157.1 General . 157.2 Environment 157.3 Control and traceability of materials 167.4 Manufacturing tolerances 167.5 Acceptable weld details . 167.5.1 General . 167.5.2 Longitudinal welds . 167.5.3 Joggle j
15、oints 167.6 Formed pressure parts . 177.6.1 General . 177.6.2 Heat treatment after forming . 177.6.3 Testing of formed parts 187.6.4 Repeated tests 187.6.5 Visual examination and dimensional check 187.6.6 Marking 197.6.7 Test certificate . 197.7 Welding 197.7.1 General . 197.7.2 Welding procedure sp
16、ecification (WPS) 197.7.3 Qualification of WPS 197.7.4 Qualification of welders and welding operators 197.7.5 Preparation of edges to be welded . 197.7.6 Execution of welded joints 20BS EN 12542:2010EN 12542:2010 (E) 3 7.7.7 Attachments and supports . 207.7.8 Preheating 207.8 Post weld heat treatmen
17、t 207.9 Repairs 207.9.1 Repairs of surface imperfections in the parent metal . 207.9.2 Repair of weld imperfections . 208 Non-pressure attachments . 218.1 Attachments . 218.2 Position. 218.3 Vent hole. 219 Inspection and testing 219.1 Visual examination of welds. 219.2 Non-destructive testing (NDT)
18、. 229.3 Non-destructive testing techniques 229.3.1 General . 229.3.2 Radiographic techniques 229.3.3 Ultrasonic techniques . 239.3.4 Magnetic particle techniques . 239.3.5 Penetrant techniques 239.4 Marking for non-destructive testing 239.5 Qualification of personnel 239.6 Acceptance criteria . 249.
19、7 Production test plates (coupon plates) . 249.8 Final assessment . 259.8.1 Pressure test 259.8.2 Final examination 2610 Surface treatment and finishing 2610.1 Environmental considerations . 2610.2 Above ground tanks 2710.2.1 General . 2710.2.2 Reflectivity . 2710.3 Underground tanks . 2710.4 Finish
20、ing operations . 2811 Marking and certification 2812 Records and documentation 2912.1 Records to be obtained by the manufacturer . 2912.2 Documents to be prepared by the manufacturer . 29Annex A (informative) Design pressure and filling conditions 30A.1 Above ground tanks 30A.1.1 Design pressure (p)
21、 . 30A.1.2 Filling conditions . 30A.1.3 Calculation of maximum fill 31A.2 Underground tanks . 31A.2.1 Design pressure 31Annex B (normative) Tolerances on tanks . 32B.1 Mean external diameter . 32B.2 Out of roundness . 32B.3 Deviation from the straight line . 32B.4 Irregularities in circular profile
22、32B.5 Thickness tolerance 33B.6 Profile 33B.7 Surface alignment . 34B.8 Attachments, nozzles and fittings . 34Annex C (normative) Hydraulic pressure test 35C.1 Temporary fittings . 35BS EN 12542:2010EN 12542:2010 (E) 4 C.2 Pressure gauges . 35C.3 Pressurising agent 35C.4 Avoidance of shocks 35C.5 Te
23、st procedure 35Annex D (normative) Imperfections . 36Annex E (normative) Design formulae for tanks . 38E.1 Allowable stresses 38E.2 Design formulae 38E.2.1 General . 38E.2.2 Cylindrical shell calculation 38E.2.3 Torispherical end calculation 38E.2.4 Ellipsoidal end calculation . 39E.2.5 Hemispherica
24、l ends 40E.2.6 Equations for calculating 41E.3 Nozzle reinforcement . 41E.3.1 General . 41E.3.2 Size of openings . 42E.3.3 Distance between openings or branches . 42E.3.4 Openings and branches . 43E.3.5 Cylindrical shells and ends with openings 43E.3.6 Shell reinforcement 43E.3.7 Extent of reinforce
25、ment . 43E.3.8 Elliptical openings 43E.3.9 Welded branches 43E.3.10 Compensating plates . 43E.3.11 Reinforcement General . 43E.3.12 Reinforcement by pads 44E.3.13 Reinforcement by branches 44E.3.14 Branch connections normal to the tank wall . 44Annex F (informative) Measurement of shell peaking 49F.
26、1 Profile gauge . 49F.2 Peaking survey 49Annex G (informative) Examples of joints . 52Annex H (informative) Method of determining reflectivity indices (above ground tanks) 56H.1 Method . 56Annex I (normative) External protection of underground tanks . 57I.1 General . 57I.2 Unmonitored protection sys
27、tems . 57I.3 Monitored protection systems 57I.3.1 Systems incorporating cathodic protection 57I.3.2 Systems incorporating a protective envelope . 58I.3.3 Other systems . 58Annex J (informative) Environmental check list . 59Annex ZA (informative) Relationship between this European Standard and the Es
28、sential Requirements of EU Directive 97/23/EC . 61Bibliography . 62BS EN 12542:2010EN 12542:2010 (E) 5 Foreword This document (EN 12542:2010) has been prepared by Technical Committee CEN/TC 286 “Liquefied petroleum gas equipment and accessories”, the secretariat of which is held by NSAI. This Europe
29、an Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by February 2011, and conflicting national standards shall be withdrawn at the latest by February 2011. Attention is drawn to the possibility that some of the ele
30、ments of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 12542:2002, EN 14075:2002. This document has been prepared under a mandate given to CEN by the European Commission a
31、nd 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 of this document. The main technical changes in this revision include: widening of the Scope to include requireme
32、nts for underground tanks; addition of environmental considerations; reference to the latest welding standards; and introduction of radioscopy as a permitted alternative to radiographic examination of welds. According to the CEN/CENELEC Internal Regulations, the national standards organizations of t
33、he following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romani
34、a, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 12542:2010EN 12542:2010 (E) 6 Introduction This European Standard calls for the use of substances and procedures that may be injurious to health and/or the environment if adequate precautions are not taken. It refers onl
35、y to technical suitability and does not absolve the user from legal obligations at any stage. Protection of the environment is a key political issue in Europe and elsewhere. Protection of the environment is taken in a very broad sense. What is meant is the total life cycle aspects of e.g. a product
36、on the environment, including expenditure of energy and during all phases from mining of raw materials, fabrication, packaging, distribution, use, scrapping, recycling of materials, etc. NOTE 1 Annex J indicates which clauses in this standard address environmental issues. Provisions should be restri
37、cted to a general guidance. Limit values are specified in national laws. It is recommended that manufacturers develop an environmental management policy. For guidance see ISO 14000 series It has been assumed in the drafting of this European Standard that the execution of its provisions is entrusted
38、to appropriately qualified and experienced people. All pressures are gauge pressures unless otherwise stated. NOTE 2 This European Standard requires measurement of material properties, dimensions and pressures. All such measurements are subject to a degree of uncertainty due to tolerances in measuri
39、ng equipment, etc. It may be beneficial to refer to the leaflet “Measurement Uncertainty Leaflet (SP INFO 2000 27 uncertainty.pdf)“. BS EN 12542:2010EN 12542:2010 (E) 7 1 Scope This European Standard specifies requirements for the design and manufacture of static welded steel cylindrical tanks, seri
40、ally produced for the storage of liquefied petroleum gas (LPG) with a volume not greater than 13 m3and for installation above or below ground. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cite
41、d applies. For undated references, the edition of the referenced document (including any amendments) valid at the time of publication of this standard applies. EN 287-1, Qualification test of welders Fusion welding Part 1: Steels EN 462-1, Non-destructive testing Image quality of radiographs Part 1:
42、 Image quality indicators (wire type) Determination of image quality value EN 462-2, Non-destructive testing Image quality of radiographs Part 2: Image quality indicators (step/hole type) Determination of image quality value EN 473:2008, Non-destructive testing Qualification and certification of NDT
43、 personnel General principles EN 571-1, Non destructive testing Penetrant testing Part 1: General principles EN 756, Welding consumables Solid wires, solid wire-flux and tubular cored electrode-flux combinations for submerged arc welding of non alloy and fine grain steels Classification EN 837-2, Pr
44、essure gauges Part 2: Selection and installation recommendations for pressure gauges EN 875, Destructive tests on welds in metallic materials Impact tests Test specimen location, notch orientation and examination EN 876, Destructive tests on welds in metallic materials Longitudinal tensile test on w
45、eld metal in fusion welded joints EN 895, Destructive tests on welds in metallic materials Transverse tensile test EN 970, Non-destructive examination of fusion welds Visual examination EN 1321, Destructive tests on welds in metallic materials Macroscopic and microscopic examination of welds EN 1418
46、, Welding personnel Approval testing of welding operators for fusion welding and resistance weld setters for fully mechanized and automatic welding of metallic materials EN 1435:1997, Non-destructive examination of welds Radiographic examination of welded joints EN 1708-1, Welding Basic weld joint d
47、etails in steel Part 1: Pressurized components EN 1712:1997, Non-destructive examination of welds Ultrasonic examination of welded joints Acceptance levels EN 1713:1998, Non-destructive testing of welds Ultrasonic examination Characterization of indications in welds EN 1714:1997, Non-destructive exa
48、mination of welds Ultrasonic examination of welded joints BS EN 12542:2010EN 12542:2010 (E) 8 EN 10025-2, Hot rolled products of structural steels Part 2: Technical delivery conditions for non-alloy structural steels EN 10028-2, Flat products made of steels for pressure purposes Part 2: Non-alloy and alloy steels with specified elevated temperature properties EN 10028-3, Flat products made of steels for pressure purposes Part 3: Weldable fine grain steels, normalized EN 10028-5
