EN 12921-3-2005 en Machines for surface cleaning and pre-treatment of industrial items using liquids or vapours - Part 3 Safety of machines using flammable cleaning liquids (Incorp.pdf

1、BRITISH STANDARD BS EN 12921-3:2005 +A1:2008 Machines for surface cleaning and pre-treatment of industrial items using liquids or vapours Part 3: Safety of machines using flammable cleaning liquids ICS 25.220.10; 25.220.20 This British Standard was published under the authority of the Standards Comm

2、ittee and comes into effect on 26 August 2005 BS EN 12921-3:2005+A1:2008 National foreword This British Standard is the UK implementation of EN 12921-3:2005+A1:2008. It supersedes BS EN 12921-3:2005 which is withdrawn. The start and finish of text introduced or altered by amendment is indicated in t

3、he text by tags. Tags indicating changes to CEN text carry the number of the CEN amendment. For example, text altered by CEN amendment A1 is indicated by . The UK participation in its preparation was entrusted by Technical Committee MCE/3, Safeguarding of machinery, to Subcommittee MCE/3/8, Thermopr

4、ocessing equipment Safety. A list of organizations represented on this subcommittee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Stand

5、ard cannot confer immunity from legal obligations. ISBN Amendments/corrigenda issued since publication Date Comments Implementation of CEN amendment A1:2008 BSI 2009 0 April 2009 978 0 580 63161 0 3 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 12921-3:2005+A1 November 2008 ICS 97.080 Superse

6、des EN 12921-3:2005 English Version Machines for surface cleaning and pre-treatment of industrial items using liquids or vapours - Part 3: Safety of machines using flammable cleaning liquids Machines de nettoyage et de prtraitement de pices industrielles utilisant des liquides ou des vapeurs - Parti

7、e 3: Scurit des machines utilisant des liquides de nettoyage inflammables Maschinen zur Oberflchenreinigung und -vorbehandlung von industriellen Produkten mittels Flssigkeiten oder Dampfphasen - Teil 3: Sicherheit von Anlagen, in denen brennbare Reinigungsflssigkeiten verwendet werden This European

8、Standard was approved by CEN on 21 March 2005 and includes Amendment 1 approved by CEN on 23 October 2008. 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 alterati

9、on. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN 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 transla

10、tion under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany,

11、 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 NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Man

12、agement Centre: rue de Stassart, 36 B-1050 Brussels 2008 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 12921-3:2005+A1:2008: EEN 12921-3:2005+A1:2008 (E) 2 Contents Page Foreword3 Introduction .4 1 Scope 5 2 Normative references

13、5 3 Terms and definitions .6 4 List of significant hazards 9 5 Safety requirements and/or measures 11 5.1 General11 5.2 Mechanical hazards.11 5.3 Safety requirements and measures against electrical hazards12 5.4 Safety requirements and measures against thermal hazards 13 5.5 Safety requirements and

14、measures against noise.13 5.6 Safety requirements and measures against hazards generated by materials and substances processed, used or emitted by the cleaning machine.13 5.7 Safety requirements and measures against hazard combinations21 5.8 Safety requirements and measures against failure of energy

15、 supply .21 5.9 Safety measures against hazards related to failure of control systems .22 6 Verification of the safety requirements .22 6.1 General22 6.2 Mechanical22 6.3 Electrical .22 6.4 Thermal .22 6.5 Noise .23 6.6 Material and substances processed, used or emitted by the cleaning machines23 6.

16、7 Hazard combinations 25 6.8 Failure of energy supply .26 6.9 Control systems.26 7 Information for use 26 7.1 General26 7.2 Instruction handbook 26 7.3 Marking .27 Annex A (normative) Determination of inherently limited heating of cleaning machines .28 Annex B (informative) Classification of flammab

17、le liquids according to Directive 67/548/EEC .29 Annex C (informative) Area classification examples for cleaning machines using flammable cleaning liquids .30 Annex ZA (informative) !Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/EC, amended by 98/79

18、/EC“ .34 Annex ZB (informative) !Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC“.35 Bibliography 36 EN 12921-3:2005+A1:2008 (E) 3 Foreword This document (EN 12921-3:2005+A1:2008) has been prepared by Technical Committee CEN/TC 271 “Surface treat

19、ment equipment Safety”, 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 May 2009, and conflicting national standards shall be withdrawn at the latest by De

20、cember 2009. This document includes Amendment 1, approved by CEN on 2008-10-23. This document supersedes EN 12921-3:2005. The start and finish of text introduced or altered by amendment is indicated in the text by tags ! “. !This document has been prepared under a mandate given to CEN by the Europea

21、n Commission and the European Free Trade Association, and supports essential requirements of EC Directive(s). For relationship with EC Directive(s), see informative Annexes ZA and ZB, which are integral parts of this document.“ This document is part of a series of standards in the area of safety for

22、 development and construction of machines for surface cleaning and pre-treatment of industrial items using liquids or vapours. The EN 12921 series includes the following parts: Part 1: Common safety requirements; Part 2: Safety of machines using water based cleaning liquids; Part 3: Safety of machin

23、es using flammable cleaning liquids; Part 4: Safety of machines using halogenated solvents. NOTE Although a machine for surface cleaning and pre-treatment of industrial items, as an integral whole, formally does not fall under the scope of the ATEX Directive 94/9/EC, the standard is based upon a fun

24、damental risk analysis according to this directive. This European Standard includes a Bibliography. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Cz

25、ech 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 United Kingdom. EN 12921-3:2005+A1:2008 (E) 4 Introduction This

26、 European Standard is a type C standard as stated in EN ISO 12100. This European Standard contains additional safety requirements to and/or deviations from EN 12921-1. The machinery concerned and the extent to which hazards, hazardous situations and events are covered is indicated in the scope of th

27、is European Standard. When provisions of this type C standard are different from those which are stated in type A or B standards, the provisions of this type C standard take precedence over the provisions of the other standards, for machines that have been designed and built according to the provisi

28、ons of this type C standard. EN 12921-3:2005+A1:2008 (E) 5 1 Scope This European Standard deals with the significant hazards of machines for surface cleaning and pre-treatment - in the following called “cleaning machines“ - of industrial items using flammable cleaning liquids or a mixture of cleanin

29、g liquids, even in emulsion form, which can potentially create, even temporarily, a condition of flammability. This European Standard applies in combination with EN 12921-1. Both parts together cover all significant hazards relevant for cleaning machines of industrial items using liquids or vapours,

30、 when they are used as intended and under the conditions foreseen by the manufacturer (see Clause 4). The specific requirements specified in this European Standard take precedence over the respective requirements of EN 12921-1. To the extent of this document the terms combustible materials and flamm

31、able substance and explosive are equivalently used. NOTE 1 The condition of flammability can be generated only when molecules of the fluid are in intimate contact with oxygen from the air. Ignition is possible when: the fluid generates a concentration of vapour in air, or: the flammable fluid is pre

32、sent as a suspension of fine droplets in air (aerosol). NOTE 2 In practice, fires and explosions differ by the size and intensity of the reaction, and by the instantaneous effects on the environment. This European Standard does not apply to machinery and related equipment excluded from the scope of

33、EN 12921-1. This European Standard is not applicable to cleaning machines of industrial items using flammable cleaning liquids which are manufactured before the publication of this European Standard by CEN. 2 Normative references The following referenced documents are indispensable for the applicati

34、on of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 954-1, Safety of machinery Safety-related parts of control systems Part 1: General principles for design EN 1127-1:1

35、997, Explosive atmospheres - Explosion prevention and protection Part 1: Basic concepts and methodology EN 1539, Dryers and ovens, in which flammable substances are released Safety requirements EN 12921-1:2005, Machines for surface cleaning and pre-treatment of industrial items using liquids or vapo

36、urs Part 1: Common safety requirements EN 13463-1:2001, Non-electrical equipment for potentially explosive atmospheres Part 1: Basic method and requirements EN 13463-5, Non-electrical equipment intended for use in potentially explosive atmospheres Part 5: Protection by constructional safety “c“ EN 5

37、0015:1998, Electrical apparatus for potentially explosive atmospheres Oil immersion “o“ EN 50017, Electrical apparatus for potentially explosive atmospheres Powder filling “q“ EN 50020, Electrical apparatus for potentially explosive atmospheres Intrinsic safety “i“ EN 60079-0, Electrical apparatus f

38、or explosive gas atmosphere Part 0: General requirements (IEC 60079- 0:2004) EN 12921-3:2005+A1:2008 (E) 6 EN 60079-1, Electrical apparatus for potentially explosive gas atmospheres Part 1: Flameproof enclosures “d“ (IEC 60079-1:2003) EN 60079-2, Electrical apparatus for explosive gas atmospheres Pa

39、rt 2: Pressurized enclosures “p” (IEC 60079- 2:2001) EN 60079-7, Electrical apparatus for explosive gas atmospheres Part 7: Increased safety “e” (IEC 60079- 7:2001) EN 60079-15, Electrical apparatus for explosive gas atmospheres Part 15: Type of protection “n“ (IEC 60079- 15:2001, modified) EN 60079

40、-18, Electrical apparatus for explosive gas atmospheres Part 18: Construction test and marking of type of protection encapsulation “m“ electrical apparatus (IEC 60079-18:2004) EN 60079-25, Electrical apparatus for explosive gas atmospheres Part 25: Intrinsically safe systems (IEC 60079-25:2003) EN 6

41、0204-1, Safety of machinery Electrical equipment of machines Part 1: General requirements (IEC 60204- 1:1997) EN 60529, Degrees of protection provided by enclosures (IP code) (IEC 60529:1989) EN ISO 12100-1:2003, Safety of machinery Basic concepts, general principles for design Part 1: Basic termino

42、logy, methodology (ISO 12100-1:2003) EN ISO 12100-2, Safety of machinery Basic concepts, general principles for design Part 2: Technical principles (ISO 12100-2:2003) 3 Terms and definitions For the purposes of this European Standard, the terms and definitions given in EN ISO 12100-1:2003, EN 12921-

43、 1:2005 and the following apply. 3.1 area classification assessed division of a facility into hazardous areas and non-hazardous areas, and the subdivision of the hazardous areas into zones 3.2 explosive atmosphere mixture with air, under atmospheric condition, of flammable substance(s) in the form o

44、f gas, vapour, mist or dust, in which, after ignition has occurred, combustion spreads to the entire unburned mixture (see 3.17 of EN 1127- 1:1997) 3.3 explosion range range of the concentrations of a flammable substance in air, within which an explosion can occur (see 3.13 of EN 1127-1:1997) 3.4 fl

45、ammable substance substance in the form of gas, vapour, liquid, solid, or mixtures of these, able to undergo an exothermic reaction with air when ignited (see 3.1 of EN 1127-1:1997) 3.5 flammable cleaning liquid liquid which can release vapours, under certain circumstances, able to undergo an exothe

46、rmic reaction with air when ignited EN 12921-3:2005+A1:2008 (E) 7 NOTE A fluid (gas or liquid) can only burn when the molecules of the liquid are in intimate contact with oxygen from the air. Ignition is possible when the liquid generates a concentration of vapour in air or the flammable liquid is p

47、resent as a suspension of fine droplets in air (aerosol). 3.6 flash point minimum temperature at which, under specified test conditions, a liquid gives off sufficient combustible gas or vapour to ignite momentarily on application of an effective ignition source (see 3.18 of EN 1127-1:1997) NOTE The

48、classification of flammable liquids according to their flash point as per EU Directive 67/548/EEC is provided in Annex B. 3.7 hazardous areas areas where hazards due to explosive atmosphere may exist. The probability of occurrence of explosive atmosphere is classified in different zones. Limits of h

49、azardous zones are given in Annex C 3.7.1 zone 0 place in which an explosive atmosphere consisting of a mixture with air of flammable substances in the form of gas, vapour or mist is present continuously or for long periods or frequently (see 6.3.2 of EN 1127-1:1997) 3.7.2 zone 1 place in which an explosive atmosphere consisting of a mixture with air of flammable substances in the form of gas, vapour or mist is likely to occur in normal operation oc