1、BSI Standards PublicationBS EN 12952-1:2015W a t e r - t u b e b o i l e r s a n dauxiliary installationsPart 1: GeneralBS EN 12952-1:2015 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 12952-1:2015.It supersedes BS EN 12952-1:2001 which is withdrawn.The UK par
2、ticipation 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 request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are res
3、ponsible for its correctapplication. The British Standards Institution 2015.Published by BSI Standards Limited 2015ISBN 978 0 580 85237 4ICS 23.020.01; 27.040; 27.060.30Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the autho
4、rity of theStandards Policy and Strategy Committee on 30 November 2015.Amendments/corrigenda issued since publicationDate Text affectedBS EN 12952-1:2015EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12952-1 October 2015 ICS 27.040 Supersedes EN 12952-1:2001English Version Water-tube boilers a
5、nd auxiliary installations - Part 1: General Chaudires tubes deau et installations auxiliaires - Partie 1: Gnralits Wasserrohrkessel und Anlagenkomponenten - Teil 1: Allgemeines This European Standard was approved by CEN on 29 August 2015. CEN members are bound to comply with the CEN/CENELEC Interna
6、l 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-CENELEC Management Centre or to any CE
7、N 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-CENELEC Management Centre has the same status as the official versi
8、ons. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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, P
9、oland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2015 CEN All rights of exploitati
10、on in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12952-1:2015 EBS EN 12952-1:2015EN 12952-1:2015 (E) 2 Contents Page European foreword . 3 1 Scope 5 1.1 General 5 1.2 Boiler assembly . 5 1.3 Other plant equipment 6 1.4 Exclusions 6 2 Normative references 6 3 T
11、erms and definitions . 6 4 Interdependency of the parts of the series 7 5 Symbols and abbreviations . 8 6 Responsibilities 11 6.1 Purchaser 11 6.2 Manufacturer . 12 7 Design/type appraisal of pressure parts . 12 Annex A (informative) Significant technical changes between this European Standard and t
12、he previous edition 13 Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 2014/68/EU . 14 Bibliography . 15 BS EN 12952-1:2015EN 12952-1:2015 (E) 3 European foreword This document (EN 12952-1:2015) has been prepared by Technical Committe
13、e 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 April 2016, and conflicting national standards shall be withdr
14、awn at the latest by April 2016. 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 identifying any or all such patent rights. This document supersedes EN 12952-1:2001. This docume
15、nt 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 2014/68/EU. For relationship with EU Directive 2014/68/EU, see informative Annex ZA which is an integral part of this document. Th
16、e informative Annex A lists the significant technical changes between this European Standard and the previous edition. EN 12952, 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: D
17、esign and calculation for pressure parts of the boiler; 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: Requirement
18、s 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; Part 10: Requirements for safeguards against excessive pressure; Part 11: Requirements for limiting
19、devices of the boiler and accessories; Part 12: Requirements for boiler feedwater and boiler water quality; Part 13: Requirements for flue gas cleaning systems; BS EN 12952-1:2015EN 12952-1:2015 (E) 4 Part 14: Requirements for flue gas DENOX-systems using liquefied pressurized ammonia and ammonia wa
20、ter solution; 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 body independent of the manufacturer; Part 18: Operating instructions. Although these parts can
21、 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 application of more than one part in order for the requirements of the standard to be satisfactorily fulfilled. NOTE A “Boiler Helpdesk” has bee
22、n established in CEN/TC 269 which may be contacted for any questions regarding the application of 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 o
23、f the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Net
24、herlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 12952-1:2015EN 12952-1:2015 (E) 5 1 Scope 1.1 General This European Standard applies to water-tube boilers with volumes in excess of two litres for the generation of stea
25、m and/or hot water at a maximum allowable pressure PS greater than 0,5 bar and with a temperature in excess of 110 C as well as auxiliary installations (other plant equipment). The purpose of this European Standard is to ensure that the necessary essential safety requirements according to Annex I of
26、 the Pressure Equipment Directive are fulfilled in order to guarantee the safety of water tube boilers. This aim will be achieved by: the proper application of the design, manufacturing, testing and inspection methods and techniques, the provision of protective measures against hazards, which cannot
27、 be eliminated, and the provision of information on residual hazards and other measures to reduce risk, which are incorporated in the various parts of this European Standard. The requirements of this European Standard take account of pressure-related hazards, which apply to water tube boilers, inclu
28、ding failure of pressure-retaining components due to overheating. This standard recognizes that it is not possible to cover all the combinations of situations that might arise. 1.2 Boiler assembly For the purpose of this European Standard, the boiler assembly includes: the water-tube boiler includin
29、g all the pressure parts from the feedwater inlet (including the inlet valve) up to and including the steam and/or hot water outlet (including the outlet valve or, if there is no valve, the first circumferential weld or flange downsteam of the outlet header); all superheaters, reheaters, economizers
30、, that are not capable of isolation from the main system by interposing shut-off valves, associated safety accessories and interconnecting piping; additionally, the piping that is connected to the boiler involved in services such as draining, venting, desuperheating, etc., up to and including the fi
31、rst isolating valve in the tubing line downstream of the boiler; reheaters which are independently fired, and are separately provided with their safety accessories including all control and safety systems. The following equipment and components can be integrated in the assembly at the discretion of
32、the manufacturer: isolatable superheaters, reheaters, economizers and related interconnecting piping; the heat supply or firing system; the means of preparing and feeding the fuel to the boiler including the control systems; the means of providing the boiler with feedwater including the control syst
33、em; BS EN 12952-1:2015EN 12952-1:2015 (E) 6 the pressure expansion vessels and tanks of hot water generating plant. 1.3 Other plant equipment a) The boiler supporting structural steelwork, the thermal insulation and/or brickwork and the casing; b) the means of providing the boiler with air including
34、 the forced draught fans and air pre-heaters which are heated by the gases of combustion; c) the facilities for moving flue gases through the boiler up to the stack inlet, including the induced draught fans and the air pollution reducing equipment located in the flue gas removal path; d) all other e
35、quipment necessary for the operation of the boiler plant. 1.4 Exclusions This European Standard does not apply to the following types of boiler plant: a) boilers other than stationary boilers; b) shell type boilers; c) electrical boilers; d) nuclear primary circuits, the failure of which can cause a
36、n emission of radioactivity. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced
37、document (including any amendments) applies. EN 764 (all parts), Pressure equipment EN 12952-5:2011, Water-tube boilers and auxiliary installations Part 5: Workmanship and construction of pressure parts of the boiler EN 12952-6:2011, Water-tube boilers and auxiliary installations Part 6: Inspection
38、during construction; documentation and marking of pressure parts of the boiler 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 764 (all parts) and the following apply. 3.1 purchaser individual or organization that buys the boiler or a part thereof 3.2
39、 manufacturer individual or organization that is responsible for the design, fabrication, testing, inspection, installation of pressure equipment and assemblies where relevant BS EN 12952-1:2015EN 12952-1:2015 (E) 7 Note 1 to entry: The manufacturer can subcontract one or more of the above-mentioned
40、 tasks under its responsibility (for example, designer, installer, etc.). SOURCE: EN 764-3:2015, 3.5.5, modified Note 1 complete and Note 2 deleted. 3.3 designer individual or organization that, on behalf of the manufacturer, carries out the design of the boiler plant Note 1 to entry: The designer d
41、etermines the shape, dimensions and thicknesses of the boiler plant components, selects the materials and details the methods of construction and testing. 3.4 material supplier individual or organization, that may or may not be the material manufacturer, who supplies material or parts used in the ma
42、nufacture of pressure equipment and assemblies SOURCE: EN 764-3:2015, 3.5.7 3.5 material manufacturer individual or organization that produces material in the basic product forms used in the manufacture of pressure equipment SOURCE: EN 764-3:2015, 3.5.6 3.6 responsible authority competent organizati
43、ons which are independent of the manufacturer Note 1 to entry: This standard identifies responsible authorities. Such organizations may be notified bodies, recognized third-party organizations or user inspectorates. For the purpose of this standard, these organizations have been collectively termed
44、responsible authorities (RA). Note 2 to entry: The definition of a notified body and the criteria controlling its operation are given in Article 12 of the Pressure Equipment Directive. Note 3 to entry: The definition of a recognized third-party organization and the criteria controlling its operation
45、 are given in Article 13 of the Pressure Equipment Directive. Note 4 to entry: The definition of a user inspectorate and the criteria controlling its operation are given in Article 14 of the Pressure Equipment Directive. Note 5 to entry: The responsibility of the manufacturer is described in 3.2. 4
46、Interdependency of the parts of the series Parts 1 to 18 of EN 12952 form a consistent set of specifications which shall be followed for compliance to the Standard. NOTE 1 Parts 4, 12, 13 and 15 of the series are published as supporting European Standards. NOTE 2 Part 17 of the series is published a
47、s a CEN Report. It is not a European Standard. BS EN 12952-1:2015EN 12952-1:2015 (E) 8 5 Symbols and abbreviations For the purposes of this European Standard, the general symbols and abbreviations given in Table 5-1 shall apply. Table 5-1 Symbols Symbol Description Unit A area mm2Af effective cross-
48、sectional area without allowances mm2Afb effective cross-sectional area of branch mm2Afp effective cross-sectional area of reinforcing pad mm2Afs effective cross-sectional area of main body mm2Ap pressurized area without allowances mm2Apb pressurized area referred to branch mm2Aps pressurized area r
49、eferred to main body mm2As shell cross-sectional area referred to main body mm2C shape factor C1 shape factor for unstayed ends or plates c1 allowance to consider the minus tolerance of wall thickness mm C2 shape factor for rectangular and elliptical plates c2 allowance for metal wastage mm C3 shape factor for flat plates with openings d diameter of tube hole (if applicable in the condition after metal wastage) mm d1 diameter of counter boring for expanded tubes mm di inside diameter mm dib in
