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1、BRITISH STANDARD BS EN 12952-2:2001 Water-tube boilers and auxiliary installations Part 2: Materials for pressure parts of boilers and accessories The European Standard EN 12952-2:2001 has the status of a British Standard ICS 27.040; 77.140.01 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY
2、 COPYRIGHT LAW Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 06:34:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS EN 12952-2:2001 This British Standard, having been prepared under the direction of the Engineering Sector Policy and Strategy Committee, was published under the authority of t
3、he Standards Policy and Strategy Committee on 29 April 2002 BSI 29 April 2002 ISBN 0 580 37312 6 National foreword This British Standard is the official English language version of EN 12952-2:2001. It partially supersedes BS 1113:1999 which will be withdrawn when Parts 1, 2, 3, 5, 6, 7, 10 and 11 ar
4、e all published. The UK participation in its preparation was entrusted to Technical Committee PVE/2, Water-tube boilers, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Additional information The United Kingdom voted
5、 against the acceptance of this European Standard at the Formal Vote stage. The principal UK objections were as follows: a) There is no reference in the EN foreword to CR 12952-17, Water-tube boilers and auxiliary installations Part 17: Guidelines for the involvement of an inspection body independen
6、t of the manufacturer. b) CEN/TC 269 passed a resolution that Parts 1, 2, 3, 5, 6 and 7 be published as a package necessary for the design, construction and safety of water-tube boilers but no mention of this is given in the EN foreword. c) Clause 4 gives requirements for materials for pressure part
7、s of boilers and accessories. 4.1.1 fails to rule out the use of rimming steels and semi-killed steels, even though there is a requirement in 4.2.2 which states that rimming steels and semi-killed steels shall not be used. d) 4.1.1. requires that material for pressure parts of boilers and accessorie
8、s covered by harmonized European material standards shall be ordered and delivered in accordance with Annex A and the relevant European Standards. However, Table A.1 of Annex A does not include stainless steel tubes, castings, cast iron, bars, flanges, valve bodies, studs, bolts and nuts, all of whi
9、ch are covered by the European Standards referred to in 4.1.1. e) Annex C, which gives requirements applicable to the special materials of the pressure parts for chemical recovery boilers, has not been referenced in the text. f) C.2.3 covers the chemical composition of chemical recovery boilers and
10、refers the reader to the material specification requirements of 3.3. However, the chemical composition of materials covered by harmonized European material standards is referred to in 4.1.5 and the chemical composition of materials covered by European Approvals is referred to in 4.2.4, but there is
11、no mention of these subclauses in C.2.3. g) C.2.7.2 covers the ultrasonic testing of composite tubes concerning longitudinal and transverse defects but this subclause makes no mention of the criteria by which the results of the test are to be accepted. Cross-references The British Standards which im
12、plement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not pu
13、rport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible Europe
14、an committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, page
15、s 2 to 24, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. DateComments Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 06:34:42 GMT+00:00 2006, Uncontrolled Copy
16、, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12952-2 December 2001 ICS 27.040; 77.140.01 English 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: Ma
17、triaux des parties sous pression des chaudires et accessoires Wasserrohrkessel und Anlagenkomponenten - Teil 2: Werkstoffe fr drucktragende Kesselteile und Zubehr This European Standard was approved by CEN on 19 February 2001. CEN members are bound to comply with the CEN/CENELEC Internal Regulations
18、 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 Management Centre or to any CEN member. This European S
19、tandard 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 Management Centre has the same status as the official versions. CEN members are the national sta
20、ndards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE F
21、R NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2001 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12952-2:2001 E Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 06:34:42 GMT+00:00 2006, Uncontrolled Copy,
22、(c) BSI EN 12952-2:2001 (E) Contents PagePage Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . .3 1Scope . . . . . . . . . . . . . . . . . . . . . . . . . .4 2Normative references . . . . . . . . . . . . . .4 3General requirements . . . . . . . . . . . . . .7 3.1 Selection of materials w
23、ith regard to service conditions . . . . . . . . . . . . . . . . . .7 3.2 Selection of materials with regard to fabrication . . . . . . . . . . . . . . . . . . . . . . . .7 3.3 Material specification . . . . . . . . . . . . . . . .7 3.4 Consideration of special material properties . . . . . . . . .
24、. . . . . . . . . . . . . . .8 3.5 Contents of material specification . . . . . . .8 3.6 Compliance and inspection documentation of materials . . . . . . . . . . . . . . . . . . . . . . .9 4Materials for pressure parts . . . . . . . . . .9 4.1 Materials covered by harmonized European material Standa
25、rds for pressure purposes .9 4.2 Material covered by European Approval of material for pressure equipment technical requirements . . . . . . . . . . . . . . .11 4.3 Materials with particular material appraisals . . . . . . . . . . . . . . . . . . . . . . . .15 5Materials for non pressure parts . . .
26、 . . .15 6Inspection documentation . . . . . . . . . . .15 Annexes Annex A (normative) Materials covered by European material Standards . . . . . . . . . .16 A.1Pressure parts . . . . . . . . . . . . . . . . . . . .16 A.2Fittings . . . . . . . . . . . . . . . . . . . . . . . . .16 A.3Flanges . . . .
27、 . . . . . . . . . . . . . . . . . . . . .16 A.4Valves . . . . . . . . . . . . . . . . . . . . . . . . . .16 Annex B (normative) Establishment of creep rupture strength values for new materials .19 Annex C (normative) Chemical recovery boilers 20 C.1General . . . . . . . . . . . . . . . . . . . . .
28、. . . .20 C.2Special requirements for composite tubing 20 C.3Marking . . . . . . . . . . . . . . . . . . . . . . . . .23 Annex ZA (informative) Clauses of this European Standard addressing essential requirements or other provisions of the Pressure Equipment Directive (PED) . . . . .24 Bibliography .
29、 . . . . . . . . . . . . . . . . . . . . . . . .24 2 Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 06:34:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12952-2:2001 (E) Foreword This European Standard has been prepared by Technical Committee CEN/TC 269 “Shell and water-tube boilers“, the
30、secretariat of which is held by DIN. This European Standard has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association and supports essential requirements of the Pressure Equipment Directive (PED)1). For relationship with Pressure Equipment Dire
31、ctive see informative annex ZA, which is an integral Part of this Standard. 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 June 2002, and conflicting national standards shall be withdrawn at the
32、latest by June 2002. In accordance with the CEN/CENELEC Internal Regulations, the following countries are bound to implement this European Standard as their National Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherland
33、s, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. The European Standard 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 calc
34、ulation 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 during construction, documentation and marking of pressure parts of the boiler Part 7: Requirements for equipment for the boiler P
35、art 8: Requirements for firing systems for liquid and gaseous fuels for the boiler Part 9: Requirements for firing systems for pulverised solid fuels for the boiler Part 10: Requirements for safeguards against excessive pressure Part 11: Requirements for limiting devices and safety circuits of the b
36、oiler 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-systems Part 15: Acceptance tests Part 16: Requirements for grate and fluidized bed firing systems for solid fuels fo
37、r the boiler Although these Parts may be obtained separately, it should be recognized that the Parts 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 fulfille
38、d. NOTE: Part 4 is not applicable during the design, construction and installation stages. The annexes A, B and C of this European Standard are normative, the annex ZA is informative. 1) Directive 97/23/EC of the European Parliament and of the Council of 29 May 1997 on the approximation of the laws
39、of the Member States concerning pressure equipment; OJEC L181. 3 Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 06:34:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12952-2:2001 (E) 1 Scope This EN 12952-2 covers the requirements for the following materials for use in pressure parts of wat
40、er-tube boilers and for parts welded on pressure parts: plates; wrought seamless tubes; electrically welded tubes; submerged, plasma and TIG arc-welded tubes; forgings; castings; rolled bars; welding consumables; fasteners; seamless composite tubes. 2 Normative references This European Standard inco
41、rporates, by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this Eu
42、ropean Standard only when incorporated in it by amendment or revision. For undated references, the latest edition of the publication referred to applies (including amendments). EN 440, Welding consumables Wire electrodes and deposits for gas shielded metal arc welding of non alloy and fine grain ste
43、els Classification. EN 499, Welding consumables Covered electrodes for manual metal arc welding of non alloy and fine grain steels Classification. EN 756, Welding consumables Wire electrodes and wire-flux combinations for submerged arc welding of non alloy and fine grain steels Classification. EN 75
44、8, Welding consumables Tubular cored electrodes for metal arc welding with and without a gas shield of non alloy and fine grain steels Classification. EN 759, Welding consumables Technical delivery conditions for welding filler metals Type of product, dimensions, tolerances and marking. prEN 764-4:1
45、999, Pressure equipment Part 4: Establishment of technical delivery conditions for materials. prEN 764-5:1999, Pressure equipment Part 5: Compliance and inspection documentation of materials. prEN 1092-1:2001, Flanges and their joints Circular flanges for pipes, valves, fittings and accessories, PN
46、designated Part 1: Steel flanges. EN 1503-1, Valves Materials for bodies, bonnets and covers Part 1: Steels specified in European Standards. EN 1503-2 , Valves Materials for bodies, bonnets and covers Part 2: Steels other than those specified in European Standards. EN 1599, Welding consumables Cover
47、ed electrodes for manual metal arc welding of creep-resisting steels Classification. EN 1668, Welding consumables Rods, wires and deposits for tungsten inert gas welding of non alloy and fine grain steels Classification. prEN 1759-1:2000, Flanges and their joints Circular flanges for pipes, valves,
48、fittings and accessories, class designated Part 1: Steel flanges, NPS to 24. EN 10002-1, Metallic materials Tensile testing Part 1: Method of test at ambient temperature. 4 Licensed Copy: sheffieldun sheffieldun, na, Sat Oct 28 06:34:42 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EN 12952-2:2001 (E)
49、EN 10002-5, Metallic materials Tensile testing Part 5: Method of testing at elevated temperature. EN 10021, General technical delivery requirements for steel and iron products. EN 10028-1, Flat products made of steels for pressure purposes Part 1: General requirements. 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: W
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