1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 12952-2:2011Water-tube boilers andauxiliary installationsPart 2: Materials for pressure parts ofboilers and accessoriesBS EN 12952-2:2011 BRITISH STANDARDNational forewordT
2、his British Standard is the UK implementation of EN 12952-2:2011.It supersedes BS EN 12952-2:2001 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee PVE/2, Water Tube And Shell Boilers.A list of organizations represented on this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 beobtained on
3、 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 63552 6ICS 23.020.01; 27.040; 27.060.30Compliance with a British Standard cannot confer immunity fromlegal obliga
4、tions.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 August 2011.Amendments issued since publicationDate Text affectedBS EN 12952-2:2011EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12952-2 August 2011 ICS 27.040 Supersedes EN 12952
5、-2:2001English Version Water-tube boilers and auxiliary installations - Part 2: Materials for pressure parts of boilers and accessories Chaudires tubes deau et installations auxiliaires - Partie 2: Matriaux des parties sous pression des chaudires et accessoires Wasserrohrkessel und Anlagenkomponente
6、n - Teil 2: Werkstoffe fr drucktragende Kesselteile und Zubehr This European Standard was approved by CEN on 25 June 2011. 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 with
7、out 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, German). A version in any other
8、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, Croatia, Cyprus, Czech Republic, De
9、nmark, 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 STANDARDIZATION COMIT EUROPEN DE NORMALI
10、SATION 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 12952-2:2011: EBS EN 12952-2:2011EN 12952-2:2011 (E) 2 Contents Page Foreword 31 Scope
11、52 Normative references 53 General requirements 93.1 Selection of materials with regard to service conditions 93.2 Selection of materials with regard to fabrication . 93.3 Material specification 93.3.1 General 93.3.2 European Standards 93.3.3 European approvals for materials . 93.3.4 Particular mate
12、rial appraisals. 103.4 Consideration of special materials properties . 103.5 Contents of material specification . 103.6 Compliance and inspection documentation of materials 114 Material for pressure parts . 114.1 Materials covered by harmonized European product Standards for pressure purposes . 114.
13、1.1 Flat products, forgings, castings, tubes, fittings, flanges and valve bodies 114.1.2 Cast iron . 114.1.3 Studs, bolts and nuts 114.1.4 Welding consumables . 114.1.5 Requirements for plates used for heads . 114.1.6 Requirements for non-destructive examination . 124.1.7 Inspection documents . 134.
14、1.8 Marking . 134.2 Material covered by European approvals of materials for pressure equipment technical requirements . 134.2.1 General 134.2.2 Manufacture 134.2.3 Heat treatment condition 134.2.4 Chemical composition 144.2.5 Mechanical and technological properties . 144.3 Materials with particular
15、material appraisals 175 Materials for non-pressure parts . 186 Inspection documentation 19Annex A (normative) Materials covered by European material Standards . 20Annex B (normative) Establishment of creep rupture strength values for new materials 31Annex C (normative) Special requirements for compo
16、site tubes 32Annex D (informative) Significant technical changes between this European Standard and the previous edition . 36Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of Directive 97/23/EC 37Bibliography 38BS EN 12952-2:2011EN 12952-2:2011 (E)
17、3 Foreword This document (EN 12952-2:2011) 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 be given the status of a national standard, either by publication of an identical text or by endorsemen
18、t, at the latest by February 2012, and conflicting national standards shall be withdrawn at the latest by February 2012. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identify
19、ing any or all such patent rights. This document supersedes EN 12952-2:2001. 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 97/
20、23/EC, see informative Annex ZA, which is an integral part of this document. Annex D provides details of significant technical changes between this European Standard and the previous edition. The European Standard series EN 12952 concerning water-tube boilers and auxiliary installations consists of
21、the following parts: Part 1: General; Part 2: Materials for pressure parts of boilers and accessories; Part 3: Design and calculation for pressure parts; Part 4: In-service boiler life expectancy calculations Part 5: Workmanship and construction of pressure parts of the boiler; Part 6: Inspection du
22、ring 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 fuels for the boiler; Part 9: Requirements for firing systems for pulverized solid fuels for the boiler; Par
23、t 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 water quality; Part 13: Requirements for flue gas cleaning systems; Part 14: Requirements for flue gas DENOX-s
24、ystems using liquefied pressurized ammonia and ammonia water solution; BS EN 12952-2:2011EN 12952-2:2011 (E) 4 Part 15: Acceptance tests; Part 16: Requirements for grate and fluidized-bed firing systems for solid fuels for the boiler; CR 12952 Part 17: Guideline for the involvement of an inspection
25、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 parts are inter-dependent. As such, the design and manufacture of water-tube boilers requires the applicatio
26、n 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 stages. NOTE 3 A “Boiler Helpdesk“ has been established in CEN/TC 269 which may be contacted fo
27、r 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, the national standards organizations of the following countries are bound to implement this Eur
28、opean 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and
29、the United Kingdom. BS EN 12952-2:2011EN 12952-2:2011 (E) 5 1 Scope This European Standard specifies the requirements for the product forms for use in pressure parts of water-tube boilers and for parts welded on to pressure parts: plates; wrought seamless tubes; electrically welded tubes; submerged,
30、 plasma and TIG arc-welded tubes; forgings; castings; rolled bars; welding consumables; fasteners; seamless composite tubes. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For und
31、ated references, the latest edition of the referenced document (including any amendments) applies. EN 757:1997, Welding consumables Covered electrodes for manual metal arc welding of high strength steels Classification EN 760:1996, Welding consumables Fluxes for submerged arc welding Classification
32、EN 764-4:2002, 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 1092-1:2007, Flanges and their joints Circular flanges for pipes, valves, fittings and acc
33、essories, PN designated Part 1: Steel flanges EN 1503-1:2000, Valves Materials for bodies, bonnets and covers Part 1: Steels specified in European Standards EN 1503-2:2000, Valves Materials for bodies, bonnets and covers Part 2: Steels other than those specified in European Standards EN 1600:1997, W
34、elding consumables Covered electrodes for manual metal arc welding of stainless and heat resisting steels Classification EN 1759-1:2004, Flanges and their joints Circular flanges for pipes, valves, fittings and accessories, class designated Part 1: Steel flanges, NPS to 24 BS EN 12952-2:2011EN 12952
35、-2:2011 (E) 6 EN 10021, General technical delivery conditions for steel products EN 10028-2:2009, Flat products made of steels for pressure purposes Part 2: Non-alloy and alloy steels with specified elevated temperature properties EN 10028-3:2009, Flat products made of steels for pressure purposes P
36、art 3: Weldable fine grain steels, normalized EN 10028-7:2007, Flat products made of steels for pressure purposes Part 7: Stainless steels EN 10160:1999, Ultrasonic testing of steel flat product of thickness equal or greater than 6 mm (reflection method) EN 10164:2004, Steel products with improved d
37、eformation properties perpendicular to the surface of the product Technical delivery conditions EN 10204:2004, Metallic products Types of inspection documents EN 10213:2007, Steel castings for pressure purposes EN 10216-2, Seamless steel tubes for pressure purposes Technical delivery conditions Part
38、 2: Non-alloy and alloy steel tubes with specified elevated temperature properties EN 10216-3:2002, Seamless steel tubes for pressure purposes Technical delivery conditions Part 3: Alloy fine grain steel tubes EN 10216-5:2004, Seamless steel tubes for pressure purposes Technical delivery conditions
39、Part 5: Stainless steel tubes EN 10217-2:2002, Welded steel tubes for pressure purposes Technical delivery conditions Part 2: Electric welded non-alloy and alloy steel tubes with specified elevated temperature properties EN 10217-3:2002, Welded steel tubes for pressure purposes Technical delivery co
40、nditions Part 3: Alloy fine grain steel tubes 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 10217-7:2005, Welded steel tubes for pressure purposes Techn
41、ical delivery conditions Part 7: Stainless steel tubes EN 10222-2:1999, Steel forgings for pressure purposes Part 2: Ferritic and martensitic steels with specified elevated temperature properties EN 10222-3:1998, Steel forgings for pressure purposes Part 3: Nickel steels with specified low temperatu
42、re properties EN 10222-4:1998, Steel forgings for pressure purposes Part 4: Weldable fine grain steels with high proof strength EN 10222-5:1999, Steel forgings for pressure purposes Part 5: Martensitic, austenitic and austenitic-ferritic stainless steels EN 10228-1:1999, Non-destructive testing of s
43、teel forgings Part 1: Magnetic particle inspection EN 10228-2:1998, Non-destructive testing of steel forgings Part 2: Penetrant testing EN 10228-3:1998, Non-destructive testing of steel forgings Part 3: Ultrasonic testing of ferritic or martensitic steel forgings BS EN 12952-2:2011EN 12952-2:2011 (E
44、) 7 EN 10253-2:2007, Butt-welding pipe fittings Part 2: Non alloy and ferritic alloy steels with specific inspection requirements EN 10253-4, Butt-welding pipe fittings Part 4: Wrought austenitic and austenitic-ferritic (duplex) stainless steels with specific inspection requirements EN 10254:1999, S
45、teel closed die forgings General technical delivery conditions EN 10269:1999, Steels and nickel alloys for fasteners with specified elevated and/or low temperature properties EN 10273:2007, Hot rolled weldable steel bars for pressure purposes with specified elevated temperature properties EN 10308:2
46、001, Non destructive testing Ultrasonic testing of steel bars EN 10314, Method for the derivation of minimum values of proof strength of steel at elevated temperatures EN 12074:2000, Welding consumables Quality requirements for manufacture, supply and distribution of consumables for welding and alli
47、ed processes EN 12536:2000, Welding consumables Rods for gas welding of non alloy and creep-resisting steels Classification EN 12952-3:2011, Water-tube boilers and auxiliary installations Part 3: Design and calculation for pressure parts EN 12952-5:2011, Water-tube boilers and auxiliary installation
48、s Part 5: Workmanship and construction of pressure parts of the boiler 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 EN 12952-12:2003, Water-tube boilers and auxiliary installations Part 12: Requirements for boiler feedwater and boiler water quality EN 13479:2004, Welding consumables General product standard for filler metals and fluxes
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