1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 12952-5:2011Water-tube boilers andauxiliary installationsPart 5: Workmanship and construction ofpressure parts of the boilerBS EN 12952-5:2011 BRITISH STANDARDNational fore
2、wordThis British Standard is the UK implementation of EN 12952-5:2011.It supersedes BS EN 12952-5:2001 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PVE/2, Water Tube And Shell Boilers.A list of organizations represented on this committee can beobtain
3、ed 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 2011ISBN 978 0 580 63555 7ICS 23.020.01; 27.040; 27.060.30Compliance with a British Standard cannot confer immunity fromlegal o
4、bligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 November 2011.Amendments issued since publicationDate Text affectedBS EN 12952-5:2011EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12952-5 November 2011 ICS 27.040 Supersedes
5、 EN 12952-5:2001English Version Water-tube boilers and auxiliary installations - Part 5: Workmanship and construction of pressure parts of the boiler Chaudires tubes deau et installations auxiliaires - Partie 5: Fabrication et construction des parties sous pression de la chaudire Wasserrohrkessel un
6、d Anlagenkomponenten - Teil 5: Verarbeitung und Bauausfhrung fr drucktragende Kesselteile This European Standard was approved by CEN on 10 September 2011. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the st
7、atus 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-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French,
8、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-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cro
9、atia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARD
10、IZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2011 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12952-5:2011: EBS EN 12952-5:2011EN 12952-5:2011 (E) 2
11、Contents Page Foreword 41 Scope 62 Normative references 63 Terms and definitions .74 Symbols and abbreviations 85 General 86 Pressure part 86.1 Drums, headers and similar pressure parts .86.2 Material identification 96.3 Material marking 96.4 Marking during manufacture 97 Cutting, forming and fabric
12、ation tolerances 107.1 Cutting material . 107.2 Forming of drums, headers and ends 117.3 Forming of tube bends . 117.4 Drum and header fabrication tolerances 198 Welding 218.1 Design and other requirements specific to welding . 218.2 Welding consumables 248.3 Welding approvals 248.4 General producti
13、on requirements for welding 258.5 Repairs to welds . 268.6 Pre-heating 278.7 Post-weld heat treatment . 278.8 Welding subsequent to final post-weld heat treatment 278.9 Welded joints, connections and production test plates . 288.10 Attachment of non-pressure parts to drums and headers by welding . 3
14、18.11 Welding of tubes . 328.12 Flash butt welding of tubes . 348.13 Welded tube water walls 348.14 Arc stud welding . 349 Mechanical connections 359.1 General . 359.2 Access openings 35BS EN 12952-5:2011EN 12952-5:2011 (E) 3 9.3 Branches and nozzles mechanically connected to the main pressure parts
15、 . 369.4 Tube connections 3710 Thermal treatment . 3910.1 General . 3910.2 Heating cycles and heat treatment(s) associated with plate forming operations 3910.3 Pre-heating for welding and thermal cutting 4110.4 Post weld heat treatment 4210.5 Heat treatment of production test plates 51Annex A (norma
16、tive) Tube bending procedure tests 52Annex B (informative) Welded pressure connections and non-pressure containing attachments . 61Annex C (normative) Manufacture of welded tubewalls . 62Annex D (normative) Coiled boilers and coiled superheaters . 69Annex E (normative) Special requirements for compo
17、site tubes 70Annex F (informative) Guidelines for the determination of the competency of boiler manufacturers 72Annex G (informative) Significant technical changes between this European Standard and the previous edition . 85Annex ZA (informative) Relationship between this European Standard and the E
18、ssential Requirements of EU Directive 97/23/EC 87Bibliography 88BS EN 12952-5:2011EN 12952-5:2011 (E) 4 Foreword This document (EN 12952-5:2011) has been prepared by Technical Committee CEN/TC 269 “Shell and water-tube boilers”, the secretariat of which is held by DIN. This European Standard shall b
19、e given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by May 2012, and conflicting national standards shall be withdrawn at the latest by May 2012. Attention is drawn to the possibility that some of the elements of this document may be
20、 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 12952-5:2001. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, an
21、d supports essential requirements of EU Directive(s). For relationship with EU Directive 97/23/EC, see informative Annex ZA, which is an integral part of this document. Annex G provides details of significant technical changes between this European Standard and the previous edition. The European Sta
22、ndard series EN 12952 concerning water-tube boilers and auxiliary installations consists of the following parts: Part 1: General; Part 2: Materials for pressure parts of boilers and accessories; Part 3: Design and calculation for pressure parts of the boiler; Part 4: In-service boiler life expectanc
23、y calculations; Part 5: Workmanship and construction of pressure parts of the boiler; Part 6: Inspection during construction; documentation and marking of pressure parts of the boiler; Part 7: Requirements for equipment for the boiler; Part 8: Requirements for firing systems for liquid and gaseous f
24、uels for the boiler; Part 9: Requirements for firing systems for pulverized solid fuels for the boiler; Part 10: Requirements for safeguards against excessive pressure; Part 11: Requirements for limiting devices of the boiler and accessories; Part 12: Requirements for boiler feedwater and boiler wat
25、er quality; Part 13: Requirements for flue gas cleaning systems; BS EN 12952-5:2011EN 12952-5:2011 (E) 5 Part 14: Requirements for flue gas DENOX-systems using liquefied pressurized ammonia and ammonia water solution; Part 15: Acceptance tests; Part 16: Requirements for grate and fluidized-bed firin
26、g systems for solid fuels for the boiler; CR 12952 Part 17: Guideline for the involvement of an inspection body independent of the manufacturer. NOTE 1 A Part 18 on operating instructions is currently in preparation. Although these parts may be obtained separately, it should be recognized that the p
27、arts are inter-dependent. As such, the design and manufacture of boilers requires the application of more than one part in order for the requirements of the European Standard to be satisfactorily fulfilled. NOTE 2 Part 4 and Part 15 are not applicable during the design, construction and installation
28、 stages. NOTE 3 A “Boiler Helpdesk“ has been established in CEN/TC 269 which may be contacted for any questions regarding the application of European Standards series EN 12952 and EN 12953, see the following website: http:/www.boiler-helpdesk.din.de. According to the CEN/CENELEC Internal Regulations
29、, 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, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Ne
30、therlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 12952-5:2011EN 12952-5:2011 (E) 6 1 Scope This European Standard specifies requirements for the workmanship and construction of water-tube boilers as defined in EN 12952-1:2001.
31、 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 287-1:2011, Qualificat
32、ion test of welders Fusion welding Part 1: Steels EN 473, Non-destructive testing Qualification and certification of NDT personnel General principles EN 571-1:1997, Non destructive testing Penetrant testing Part 1: General principles EN 1092-1:2007, Flanges and their joints Circular flanges for pipe
33、s, valves, fittings and accessories, PN designated Part 1: Steel flanges EN 1418:1997, Welding personnel Approval testing of welding operators for fusion welding and resistance weld setters for fully mechanized and automatic welding of metallic materials EN 1759-1:2004, Flanges and their joints Circ
34、ular flanges for pipes, valves, fittings and accessories, Class designated Part 1: Steel flanges, NPS 1/2 to 24 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 Pa
35、rt 2: Non-alloy and alloy steels with specified elevated temperature properties EN 10204:2004, Metallic products Types of inspection documents EN 10216-2, Seamless steel tubes for pressure purposes Technical delivery conditions Part 2: Non-alloy and alloy steel tubes with specified elevated temperat
36、ure properties EN 10253-2:2007, Butt-welding pipe fittings Part 2: Non alloy and ferritic alloy steels with specific inspection requirements EN 10253-4:2008, Butt-welding pipe fittings Part 4: Wrought austenitic and austenitic-ferritic (duplex) stainless steels with specific inspection requirements
37、EN 12952-1:2001, Water-tube boilers and auxiliary installations Part 1: General EN 12952-2:2011, Water-tube boilers and auxiliary installations Part 2: Materials for pressure parts of boilers and accessories EN 12952-3:2011, Water-tube boilers and auxiliary installations Part 3: Design and calculati
38、on for pressure parts EN 12952-6:2011, Water-tube boilers and auxiliary installations Part 6: Inspection during construction; documentation and marking of pressure parts of the boiler EN 12952-7:2002, Water-tube boilers and auxiliary installations Part 7: Requirements for equipment for the boiler BS
39、 EN 12952-5:2011EN 12952-5:2011 (E) 7 EN ISO 148-1:2010, Metallic materials Charpy pendulum impact test Part 1: Test method (ISO 148-1:2009) EN ISO 4759-1:2000, Tolerances for fasteners Part 1: Bolts, screws, studs and nuts Product grades A, B and C (ISO 4759-1:2000) EN ISO 5817, Welding Fusion-weld
40、ed joints in steel, nickel, titanium and their alloys (beam welding excluded) Quality levels for imperfections (ISO 5817:2003, corrected version:2005, including Technical Corrigendum 1:2006) EN ISO 6520-1, Welding and allied processes Classification of geometric imperfections in metallic materials P
41、art 1: Fusion welding (ISO 6520-1:2007) EN ISO 6892-1:2009, Metallic materials Tensile testing Part 1: Method of test at room temperature (ISO 6892-1:2009) EN ISO 14555:2006, Welding Arc stud welding of metallic materials (ISO 14555:2006) EN ISO 15609 (all parts), Specification and qualification of
42、welding procedures for metallic materials Welding procedure specification EN ISO 15613, Specification and qualification of welding procedure for metallic materials Qualification based on pre-production welding test (ISO 15613:2004) EN ISO 15614-1:2004, Specification and qualification of welding proc
43、edures for metallic materials Welding procedure test Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys (ISO 15614-1:2004) EN ISO 17638:2009, Non-destructive testing of welds Magnetic particle testing (ISO 17638:2003) EN ISO 17663:2009, Welding Quality requirements for
44、 heat treatment in connection with welding and allied processes (ISO 17663:2009) EN ISO 23277:2009, Non-destructive testing of welds Penetrant testing of welds Acceptance levels (ISO 23277:2006) EN ISO 23278:2009, Non-destructive testing of welds Magnetic particle testing of welds Acceptance levels
45、(ISO 23278:2006) CEN ISO/TR 15608, Welding Guidelines for a metallic material grouping system (ISO/TR 15608:2005) 3 Terms and definitions For the purposes of this document the terms and definitions given in EN 12952-1:2001 and the following apply. 3.1 cold forming for ferritic steels, it is forming
46、at temperatures below the maximum permissible temperature for post-weld heat treatment and for austenitic materials it is forming at temperatures below 300 C NOTE See Table 10.4-2. 3.2 hot forming for ferritic steels, it is forming at temperatures at or above the maximum permissible temperature for
47、post-weld heat treatment BS EN 12952-5:2011EN 12952-5:2011 (E) 8 NOTE See Table 10.4-2. 4 Symbols and abbreviations For the purposes of this European Standard, the symbols given in EN 12952-1 shall apply. Throughout this European Standard, additional terminology and symbols have been included, where
48、 necessary, to meet the requirements of the specific text concerned. It should also be noted that in some clauses the same additional symbol is used in different equations to represent different terms. However, in all such cases, the special meaning of each symbol is indicated for each equation. 5 General Water-tube boilers shall be manufactured and assembled in accordance with approved drawings, procedures and specifications and good engineering practice. The workshops and sites associated with the construction of water-tube boilers shall be properly equipped and
