1、January 2013 Translation by DIN-Sprachendienst.English price group 18No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).IC
2、S 27.040!$gM“1936842www.din.deDDIN EN 12952-7Water-tube boilers and auxiliary installations Part 7: Requirements for equipment for the boiler;English version EN 12952-7:2012,English translation of DIN EN 12952-7:2013-01Wasserrohrkessel und Anlagenkomponenten Teil 7: Anforderungen an die Ausrstung fr
3、 den Kessel;Englische Fassung EN 12952-7:2012,Englische bersetzung von DIN EN 12952-7:2013-01Chaudires tubes deau et installations auxiliaires Partie 7: Exigences pour lquipement de la chaudire;Version anglaise EN 12952-7:2012,Traduction anglaise de DIN EN 12952-7:2013-01SupersedesDIN EN 12952-7:200
4、2-09www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 44 pages 12.12 DIN EN 12952-7:2013-01 2 A comma is used as the decimal marker. National foreword This document (EN 12952-7:2012) has been prepared by Technical Committee CEN/TC 269 “Sh
5、ell and water-tube boilers” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was the Normenausschuss Rohrleitungen und Dampfkesselanlagen (Piping and Boiler Plant Standards Committee), Working Committee NA 082-00-18 AA Dampfkesselanlagen. For more detailed informa
6、tion about the Normenausschuss Rohrleitungen und Dampfkesselanlagen (NARD), please visit www.nard.din.de. Amendments This standard differs from DIN EN 12952-7:2002-09 as follows: a) normative references have been updated; b) Clause 3 “Terms and definitions” has been revised; c) the requirements in S
7、ubclause 4.2 “Heat supply system” have been rendered more precise; d) Subclause 4.5 “Requirements for limiting devices and protective systems” has been revised; e) Subclause 4.8 “Water quality” has been added; f) Clause 5 “Special requirements for steam boilers” has been revised; g) in Clause 7 “Add
8、itional requirements for plants without manual intervention”, further requirements have been added in Subclauses 7.3 “Start up”, 7.4 “Water quality”, 7.7 “Alarms and monitoring from the water tube boiler plant” and the requirements in Subclause 7.5 “Steam boilers” have been revised; h) the former Cl
9、ause 8 “Final assessment of safety devices” has been replaced with a new Clause 8 “Final inspection of the water tube boiler plant”; i) new informative annexes have been included: Annex B “Aspects of boiler operation”, Annex C “Alarms and monitoring from the boiler plant” and Annex G “Drain and blow
10、down devices”; j) new normative annexes have been included: Annex D “Requirements for limiters based on analogue measurements”, Annex E “Access to internal parts” and Annex F “Final inspection of the water tube boiler plant”; k) the standard has been editorially revised. Previous editions DIN EN 129
11、52-7: 2002-09 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12952-7 October 2012 ICS 27.040 Supersedes EN 12952-7:2002English Version Water-tube boilers and auxiliary installations - Part 7: Requirements for equipment for the boiler Chaudires tubes deau et installations auxiliaires - Partie 7
12、:Exigences pour lquipement de la chaudire Wasserrohrkessel und Anlagenkomponenten - Teil 7: Anforderungen an die Ausrstung fr den Kessel This European Standard was approved by CEN on 8 September 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the condi
13、tions 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 CEN member. This European Standard exists
14、 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 versions. CEN members are the national stand
15、ards 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, Poland, Portugal, Romania, Slovakia, Slo
16、venia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide
17、for CEN national Members. Ref. No. EN 12952-7:2012: EEN 12952-7:2012 (E) 2 Contents Foreword 31 Scope 52 Normative references 53 Terms and definitions . 64 General requirements for steam boilers and hot water generators . 85 Special requirements for steam boilers 126 Special requirements for hot wat
18、er generators 157 Additional requirements for plants without manual intervention . 208 Final inspection of the water tube boiler plant . 23Annex A (normative) Chemical recovery boilers (Black liquor recovery boilers) 24Annex B (informative) Aspects of boiler operation . 26Annex C (informative) Alarm
19、s and monitoring from the boiler plant . 30Annex D (normative) Requirements for limiters based on analogue measurements 31Annex E (normative) Access to internal parts . 35Annex F (normative) Final inspection of the water tube boiler plant 38Annex G (informative) Drain and blowdown devices 39Annex H
20、(informative) Significant technical changes between this European Standard and the previous edition . 40Annex ZA (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 97/23/EC 41Bibliography 42DIN EN 12952-7:2013-01EN 12952-7:2012 (E) 3 Foreword Thi
21、s document (EN 12952-7:2012) 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 late
22、st by April 2013, and conflicting national standards shall be withdrawn at the latest by April 2013. 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
23、patent rights. This document supersedes EN 12952-7:2002. 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 97/23/EC, see informati
24、ve Annex ZA, which is an integral part of this document. Annex H 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 the following parts:
25、 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 expectancy calculations; Part 5: Workmanship and construction of pressure parts of the boiler; Part 6: Inspection during
26、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; Part 10:
27、 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-system
28、s using liquified pressurized ammonia and ammonia water solution; DIN EN 12952-7:2013-01EN 12952-7:2012 (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 b
29、ody independent of the manufacturer; Part 18: Operating instructions. Although these parts may be obtained separately, it should be recognised 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
30、 requirements of this European Standard to be satisfactorily fulfilled. NOTE 1 Part 4 and Part 15 are not applicable during the design, construction and installation stages. NOTE 2 A “Boiler Helpdesk“ has been established in CEN/TC 269 which may be contacted for any questions regarding the applicati
31、on 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 organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulga
32、ria, 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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Tur
33、key and the United Kingdom. DIN EN 12952-7:2013-01EN 12952-7:2012 (E) 5 1 Scope This part of this European Standard specifies the essential requirements for equipment and protective devices for a water-tube boiler plant as defined in EN 12952-1, to ensure the boiler operates safely within the allowa
34、ble limits (pressure, temperature, etc.). NOTE 1 Additional requirements specially needed for boilers without manual intervention are specified in Clause 7. NOTE 2 Requirements for equipment for chemical recovery boilers are given in Annex A. 2 Normative references The following documents, in whole
35、or in part, are normatively referenced in this document and are indispen-sable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 837-1, Pressure gauges Part 1: Bourdo
36、n tube pressure gauges Dimensions, metrology, requirements and testing EN 12952-1:2001, Water-tube boilers and auxiliary installations Part 1: General EN 12952-3:2011, Water-tube boilers and auxiliary installations Part 3: Design and calculation for pressure parts of the boiler EN 12952-8:2002, Wate
37、r-tube boilers and auxiliary installations Part 8: Requirements for firing systems for liquid and gaseous fuels for the boiler EN 12952-9:2002, Water-tube boilers and auxiliary installations Part 9: Requirements for firing systems for pulverized solid fuels for the boiler EN 12952-10:2002, Water-tub
38、e boilers and auxiliary installations Part 10: Requirements for safeguards against excessive pressure EN 12952-11:2007, Water-tube boilers and auxiliary installations Part 11: Requirements for limiting devices of the boiler and accessories EN 12952-12:2003, Water-tube boilers and auxiliary installat
39、ions Part 12: Requirements for boiler feedwater and boiler water quality EN 12952-13, Water-tube boilers and auxiliary installations Part 13: Requirements for flue gas cleaning systems EN 12952-14, Water-tube boilers and auxiliary installations Part 14: Requirements for flue gas DENOX-systems using
40、liquefied pressurized ammonia and ammonia water solution EN 12952-16:2002, Water-tube boilers and auxiliary installations Part 16: Requirements for grate and fluidized-bed firing systems for solid fuels for the boiler EN 12952-18, Water-tube boilers and auxiliary installations Part 18: Operating ins
41、tructions EN 50156-1:2004, Electrical equipment for furnaces and ancillary equipment Part 1: Requirements for application design and installation DIN EN 12952-7:2013-01EN 12952-7:2012 (E) 6 3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 12952-1:2001,
42、 EN 12952-8:2002, EN 12952-9:2002, EN 12952-11:2007, EN 12952-12:2003 and EN 12952-16:2002 and the following apply. 3.1 Types of steam boilers and hot water generators 3.1.1 natural circulation steam boilers and hot water generators steam boilers and hot water generators in which the water to be eva
43、porated/heated circulates due to the differences in density 3.1.2 forced or assisted circulation steam boilers and hot water generators steam boilers and hot water generators in which the water to be evaporated/heated is circulated by means of pumps 3.1.3 once-through steam boilers and hot water gen
44、erators steam boilers, with or without separating vessels, where the water flow is determined by the feedwater pump, and the water is evaporated completely or in a major portion during one single passage Note 1 to entry: Hot water generators, where the water flow is effected by the circulating pump
45、of the heating system and is heated during one single passage, e.g. once-through hot water generator where there is no contact between hot and cold water in the drum (two-way drum) once-through hot water generator with header distributing water from below. 3.1.4 waste heat steam boilers and hot wate
46、r generators boilers and generators utilising heat recovered from outside sources, e.g. gas turbines, blast furnaces 3.2 limits of steam boilers and hot water generators boundaries of the steam and water spaces located between the shut-off devices of the steam boilers and hot water generators in the
47、 inlet, outlet, pressure retaining, overflow, and drain lines Note 1 to entry: The bodies of the shut-off devices are considered to be within these limits. 3.3 steam boiler and hot water generating plant plant consists of one or more water-tube boilers and their equipment as defined in EN 12952-1 3.
48、4 heat supply system assembly of components in which the energy of the fuel (including electrical and waste-heat energy) is supplied to the steam boilers and hot water generators 3.5 classification of pressure generation systems (Hot water generators) 3.5.1 internally pressurised systems systems where the pressure is generated by the saturation pressure corresponding to the flow temperature 3.5.2 externally pressurised sys
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