1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Shell boilersPart 4: Workmanship and construction of pressure parts of the boilerBS EN 12953-4:2018EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12953-4 March 2018 ICS 27.060.30 Supersedes EN 12953-4:2002English
2、Version Shell boilers - Part 4: Workmanship and construction of pressure parts of the boiler Chaudires tubes de fume - Partie 4 : Fabrication et construction des parties sous pression des chaudiresGrowasserraumkessel - Teil 4: Verarbeitung und Bauausfhrung fr drucktragende Kesselteile This European
3、Standard was approved by CEN on 6 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 alteration. Up-to-date lists and bibliographical references concer
4、ning 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 translation under the responsibility of a CEN member into
5、 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, Finland, Former Yugoslav Republic of Macedonia, France, Ge
6、rmany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES
7、KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels 2018 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12953-4:2018 ENational forewordThis British Standard is the UK implementation of EN 12953-
8、4:2018. It supersedes BS EN 12953-4:2002, which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee PVE/2, Water Tube And Shell Boilers.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not pu
9、rport to include all the necessary provisions of a contract. Users are responsible for its correct application. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580 95875 5ICS 27.060.30Compliance with a British Standard cannot confer immunity from legal obliga
10、tions. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 April 2018.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS EN 12953-4:2018EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12953-4 March 2018 ICS
11、 27.060.30 Supersedes EN 12953-4:2002English Version Shell boilers - Part 4: Workmanship and construction of pressure parts of the boiler Chaudires tubes de fume - Partie 4 : Fabrication et construction des parties sous pression des chaudiresGrowasserraumkessel - Teil 4: Verarbeitung und Bauausfhrun
12、g fr drucktragende Kesselteile This European Standard was approved by CEN on 6 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 alteration. Up-to-dat
13、e 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 translation
14、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, Finland, Form
15、er 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. EUROPEAN COMMITTEE FOR STANDARDIZATIO
16、N COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels 2018 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12953-4:2018 EBS EN 12953-4:2018EN 12953-4:20
17、18 (E) 2 Contents Page European foreword . 4 1 Scope 6 2 Normative references 6 3 Terms and definitions . 7 4 Symbols . 7 5 General requirements . 7 5.1 General 7 5.2 Traceability . 8 5.2.1 General 8 5.2.2 Material . 8 5.2.3 Welding . 8 5.2.4 Inspection (NDT) . 8 5.3 Cylindrical shells . 9 5.4 Tell-
18、tale holes 11 5.5 End plates and tube plates 11 5.6 Plain tubes and stay tubes 11 5.7 Manhole frames and openings 12 5.7.1 Jointing flanges . 12 5.7.2 Openings for access and inspection . 12 5.8 Connections for accessories . 13 5.8.1 Accessories . 13 5.8.2 Set-in flange and set-on flange 13 5.8.3 Fl
19、anges on nozzles . 13 5.8.4 Bolting 14 5.9 Cylindrical furnaces 14 5.10 Water-cooled reversal chamber . 16 5.11 Stays 16 5.11.1 Bar stays 16 5.11.2 Girder stays 17 5.11.3 Tube stays . 17 5.11.4 Non-perpendicular bar stays or tube stays 17 5.12 Design of welded joints 17 5.12.1 Weld deposition 17 5.1
20、2.2 Weld crosses 17 5.12.3 Types of welds . 18 5.12.4 Weld preparations . 19 5.12.5 Welding plates of unequal thickness 19 5.13 Openings in or adjacent to welds . 19 5.14 Fabrication . 19 5.14.1 General . 19 5.14.2 Welding 19 5.14.3 Cutting, fitting and alignment 20 5.14.4 Longitudinal seams . 21 5.
21、14.5 Circumferential seams . 21 5.14.6 Surface condition before welding 21 BS EN 12953-4:2018EN 12953-4:2018 (E) 3 5.14.7 Middle line alignments . 21 5.14.8 Surface alignment tolerances . 22 5.14.9 Miscellaneous welding requirements . 23 5.14.10 Repair of weld defects 24 5.15 Post-weld heat treatmen
22、t (PWHT) and other heat treatments . 24 5.15.1 General . 24 5.15.2 Material thickness 24 Annex A (normative) Typical welds for shell boilers . 27 Annex B (informative) Gaskets for closing systems of access and inspection openings 32 Annex C (informative) Significant technical changes between this Eu
23、ropean Standard and the previous edition 33 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 2014/68/EU aimed to be covered 34 Bibliography . 35 BS EN 12953-4:2018EN 12953-4:2018 (E) 4 European foreword This document (EN 12953-4:2018)
24、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 be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by September 2018, and con
25、flicting national standards shall be withdrawn at the latest by September 2018. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This document superse
26、des EN 12953-4:2002. 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 EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of
27、this document. The informative Annex C lists the significant technical changes between this European Standard and the previous edition. EN 12953, Shell boilers, consists of the following parts: Part 1: General; Part 2: Materials for pressure parts of boilers and accessories; Part 3: Design and calcu
28、lation for pressure parts; Part 4: Workmanship and construction of pressure parts of the boiler; Part 5: Inspection during construction, documentation and marking of pressure parts of the boiler; Part 6: Requirements for equipment for the boiler; Part 7: Requirements for firing systems for liquid an
29、d gaseous fuels for the boilers; Part 8: Requirements for safeguards against excessive pressure; Part 9: Requirements for limiting devices of the boiler and accessories; Part 10: Requirements for feedwater and boiler water quality; Part 11: Acceptance tests; Part 12: Requirements for grate firing sy
30、stems for solid fuels for the boiler; Part 13: Operating instructions; Part 14: Guideline for involvement of an inspection body independent of the manufacturer CR 12953-14. BS EN 12953-4:2018EN 12953-4:2018 (E) 5 Although these parts can be obtained separately, the parts are interdependent. As such,
31、 the design and manufacture of shell boilers requires the application of more than one part in order for the requirements of the standard to be satisfactorily fulfilled. NOTE A “Boiler Helpdesk” has been established in CEN/TC 269 which can be contacted for any questions regarding the application of
32、the 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, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgar
33、ia, Croatia, 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, Switzerla
34、nd, Turkey and the United Kingdom. BS EN 12953-4:2018EN 12953-4:2018 (E) 6 1 Scope This European Standard specifies requirements for the workmanship and construction of shell boilers as defined in EN 12953-1. NOTE 1 For other components such as water tube walls, see the EN 12952 series. NOTE 2 For e
35、conomizers and superheaters, see EN 12953-4 or EN 12952-5. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements of this document. For dated references, only the edition cited applies. For undated reference
36、s, the latest edition of the referenced document (including any amendments) applies. EN 1092-1:2007+A1:2013, Flanges and their joints Circular flanges for pipes, valves, fittings and accessories, PN designated Part 1: Steel flanges EN 1092-2:1997, Flanges and their joints Circular flanges for pipes,
37、 valves, fittings and accessories, PN designated Part 2: Cast iron flanges EN 1515-4:2009, Flanges and their joints Bolting Part 4: Selection of bolting for equipment subject to the Pressure Equipment Directive 97/23/EC EN 1759-1:2004, Flanges and their joint Circular flanges for pipes, valves, fitt
38、ings and accessories, Class designated Part 1: Steel flanges, NPS 1/2 to 24 EN 10216-2:2013, Seamless steel tubes for pressure purposes Technical delivery conditions Part 2: Non-alloy and alloy steel tubes with specified elevated temperature properties EN 10217-2:2002, Welded steel tubes for pressur
39、e purposes Technical delivery conditions Part 2: Electric welded non-alloy and alloy steel tubes with specified elevated temperature properties EN 10217-5:2002, Welded steel tubes for pressure purposes Technical delivery conditions Part 5: Submerged arc welded non-alloy and alloy steel tubes with sp
40、ecified elevated temperature properties EN 12953-1:2012, Shell boilers Part 1: General EN 12953-2:2012, Shell boilers Part 2: Materials for pressure parts of boilers and accessories EN 12953-3:2016, Shell boilers Part 3: Design and calculation for pressure parts EN 12953-5:2002, Shell boilers Part 5
41、: Inspection during construction, documentation and marking of pressure parts of the boiler EN ISO 2553:2013, Welding and allied processes Symbolic representation on drawings Welded joints (ISO 2553:2013) EN ISO 9606-1:2017, Qualification testing of welders Fusion welding Part 1: Steels (ISO 9606-1:
42、2012 including Cor 1:2012 and Cor 2:2013) EN ISO 14731:2006, Welding coordination Tasks and responsibilities (ISO 14731:2006) EN ISO 14732:2013, Welding personnel Qualification testing of welding operators and weld setters for mechanized and automatic welding of metallic materials (ISO 14732:2013) B
43、S EN 12953-4:2018EN 12953-4:2018 (E) 7 EN ISO 15609-1:2004, Specification and qualification of welding procedures for metallic materials Welding procedure specification Part 1: Arc welding (ISO 15609-1:2004) EN ISO 15614-1:2017, Specification and qualification of welding procedures for metallic mate
44、rials Welding procedure test Part 1: Arc and gas welding of steels and arc welding of nickel and nickel alloys (ISO 15614-1:2017) 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 12953-1 and the following apply. ISO and IEC maintain terminological data
45、bases for use in standardization at the following addresses: IEC Electropedia: available at http:/www.electropedia.org/ ISO Online browsing platform: available at http:/www.iso.org/obp 3.1 seam generic term for welded joints, welded seams or welds 4 Symbols For the purposes of this document, the sym
46、bols given in EN 12953-1:2012, Table 1 apply. 5 General requirements 5.1 General 5.1.1 The rules in this part are applicable to all aspects of fabrication, including welding, of boilers and boiler parts, and shall be used in conjunction with the specific requirements applicable to the grades of mate
47、rials used. 5.1.2 All welding activities shall be in accordance with the requirements of this standard. 5.1.3 For category II, III and IV boilers, all welders or welding operators and welding procedures shall be approved (see 5.14.2). For category I boilers, approval shall not be mandatory. 5.1.4 Th
48、e manufacturer of a boiler, built in accordance with the requirements of this European Standard, shall be responsible for the welding done by his workmen or subcontracted by him. The manufacturer shall designate a competent welding supervisor in accordance with EN ISO 14731. No production work shoul
49、d be undertaken on category II, III and IV boilers according to the Pressure Equipment Directive PED 2014/68/EU until both the welding procedures and the welders or welding operators have been approved. 5.1.5 Materials and welding consumables shall fulfil the requirements of EN 12953-2:2012. BS EN 12953-4:2018EN 12953-4:2018 (E) 8 5.2 Traceability 5.2.1 General The manufacturer shall demonstrate during the whole manufacturing process that identification and traceabili
