1、January 2010DEUTSCHE NORM English price group 12No part of this standard 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).ICS 97.080!$r8“1567921www.
2、din.deDDIN EN 12921-2Machines for surface cleaning and pre-treatment of industrial itemsusing liquids or vapours Part 2: Safety of machines using water based cleaning liquids (includesAmendment A1:2008)English version of DIN EN 12921-2:2010-01Maschinen zur Oberflchenreinigung und -vorbehandlung von
3、industriellen Produktenmittels Flssigkeiten oder Dampfphasen Teil 2: Anlagen, in denen wssrige Reinigungsmittel verwendet werden (enthlt nderungA1:2008)Englische Fassung DIN EN 12921-2:2010-01SupersedesDIN EN 12921-2:2005-08www.beuth.deDocument comprises pages21Start of validity This standard takes
4、effect on 1 January 2010. National foreword This standard has been prepared by Technical Committee CEN/TC 271, “Surface treatment equipment Safety” (Secretariat: DIN, Germany). The responsible German body involved in its preparation was the Normenausschuss Maschinenbau (Mechanical Engineering Standa
5、rds Committee), Working Committee NA 060-09-41 AA Vorbehandlungs-anlagen of Section Oberflchentechnik. This standard contains specifications meeting the essential requirements set out in Annex I of the “Machinery Directive”, Directive 98/37/EC, (valid until 28 December 2009) and the “revised Machine
6、ry Directive”, Directive 2006/42/EC, which takes effect on 29 December 2009, and which apply to machines that are either first placed on the market or commissioned within the EEA. This standard serves to facilitate proof of compliance with the essential requirements of the directives. Once this stan
7、dard is cited in the Official Journal of the European Union, it is deemed a “harmonized” standard and thus, a manufacturer applying this standard may assume compliance with the requirements of the Machinery Directive (“presumption of conformity”). The European Standards referred to in this document
8、have been published as the corresponding DIN EN or DIN EN ISO Standards with the same number. Amendments This standard differs from DIN EN 12921-2:2005-08 as follows: a) The foreword has been revised. b) Annex ZA (informative) “Relationship between this European Standard and the Essential Requiremen
9、ts of EU Directive 98/37/EC” has been updated. c) Annex ZB (informative) “Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC” has been added. Previous editions DIN EN 12921-2: 2005-08 2 DIN EN 12921-2:2010-01 EUROPEAN STANDARD NORME EUROPENNE EUROPI
10、SCHE NORM EN 12921-2:2005+A1 November 2008 ICS 97.080 Supersedes EN 12921-2:2005 English Version Machines for surface cleaning and pre-treatment of industrial items using liquids or vapours Part 2: Safety of machines using water based cleaning liquids Machines de nettoyage et de pr-traitement de pic
11、es industrielles utilisant des liquides ou des vapeurs Partie 2: Scurit des machines utilisant des liquides de nettoyage base aqueuse Maschinen zur Oberflchenreinigung und -vorbehandlung von industriellen Produkten mittels Flssigkeiten oder Dampfphasen Teil 2: Anlagen, in denen wssrige Reinigungsmit
12、tel verwendet werden This European Standard was approved by CEN on 25 March 2008 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 EuropeanStandard the status of a nati
13、onal standard without any alteration. 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
14、any other language made by translationunder the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as theofficial versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Es
15、tonia, 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 NORMALISATION EUR
16、OPISCHES KOMITEE FR NORMUNG Management 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 12921-2:2005+A1:2008: EEN 12921-2:2005+A1:2008 (E) 2 Contents Page Foreword3 Introduction .4 1
17、Scope 5 2 Normative references 5 3 Terms and definitions .6 4 List of significant hazards 7 5 Safety requirements and/or measures 9 5.1 General9 5.2 Mechanical hazards.9 5.3 Electrical requirements .10 5.4 Safety requirements and measures against thermal hazards 11 5.5 Safety requirements and measur
18、es against noise.11 5.6 Safety requirements and measures against hazards generated by materials and substances processed, used or emitted by the cleaning machine.11 5.7 Safety requirements and measures against hazard combinations14 5.8 Safety requirements and measures against failure of energy suppl
19、y .14 5.9 Control systems.15 6 Verification of the safety requirements and/or measures .15 6.1 General15 6.2 Mechanical15 6.3 Electrical .15 6.4 Thermal .15 6.5 Noise .16 6.6 Material and substances processed, used or emitted by the cleaning machines16 6.7 Hazard combinations 16 6.8 Failure of energ
20、y supply and other functional disorder16 6.9 Control systems.16 7 Information for use 16 7.1 General16 7.2 Instruction handbook 17 7.3 Minimum Marking 17 Annex ZA (informative) !Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/EC, amended by 98/79/EC“
21、.18 Annex ZB (informative) !Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC“.19 DIN EN 12921-2:2010-01 EN 12921-2:2005+A1:2008 (E) 3 Foreword This document (EN 12921-2:2005+A1:2008) has been prepared by Technical Committee CEN /TC 271, “Surface t
22、reatment 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 b
23、y December 2009. This document includes Amendment 1, approved by CEN on 2008-10-23. This document supersedes EN 12921-2:2005. 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 Eur
24、opean 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 standard is part of a series of standards in the area of safet
25、y for development and construction of machines for surface cleaning and pre-treatment of industrial items using liquids or vapours. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austri
26、a, Belgium, Bulgaria, 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 United Kingdom. DIN EN 12921-2:
27、2010-01 EN 12921-2:2005+A1:2008 (E) 4 Introduction This 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
28、 and events are covered are indicated in the scope of this 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 b
29、een designed and built according to the provisions of this type C standard. 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 machines using flammable cleaning liquids Part 4: Safety of
30、 machines using halogenated solvents. DIN EN 12921-2:2010-01 EN 12921-2:2005+A1:2008 (E) 5 1 Scope This European Standard deals only with the significant hazards of machines for surface cleaning and pre-treatment (in the following called “cleaning machines”) of industrial items using water based cle
31、aning liquids in the mode of suspension, solution or dispersion of compounds or substances in water applied by immersion and/or spraying in one or more stages. This European Standard !applies“ in combination with EN 12921-1. Both parts together cover all significant hazards relevant for cleaning mac
32、hines for industrial items using liquids or vapours, when they are used as intended and under the conditions foreseen by the manufacturer (see clause 4). The specific requirements specified in this standard take precedence over the respective requirements in EN 12921-1. This standard should be appli
33、ed together with EN 12921-3 in case of release of flammable vapours from water based cleaning liquids. This European Standard !applies“ together with EN 12921-3 and prEN 12921-4 in case of use of water based cleaning liquids of which evaporating can lead to hazards caused by explosive atmospheres. W
34、ater based cleaning liquids containing a quantity of halogenated solvents exceeding 2 % of the volume are considered hazardous with respect to the creation of a potentially explosive atmosphere. This European Standard does not apply to machinery and related equipment excluded from the scope of EN 12
35、921-1. This European Standard does not apply to cleaning machines for industrial items using water based cleaning liquids which are manufactured before the publication of this standard by CEN. 2 Normative references The following referenced documents are indispensable for the application of this doc
36、ument. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 746-1, Industrial thermoprocessing equipment Part 1: Common safety requirements for industrial thermoprocessing equipment EN 746-2
37、, Industrial thermoprocessing equipment Part 2: Safety requirements for combustion and fuel handling systems EN 1127-1, Explosive atmospheres Explosion prevention and protection Part 1: Basic concepts and methodology EN 1717, Protection against pollution of potable water in water installations and g
38、eneral requirements of devices to prevent pollution by backflow EN 12921-1:2005, Machines for surface cleaning and pre-treatment of industrial items using liquids or vapours Part 1: common safety requirements EN 12921-3:2005, Machines for surface cleaning and pre-treatment of industrial items using
39、liquids or vapours Part 3: safety of machines using flammable cleaning liquids EN 60204-1:1997, 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;
40、Safety of machinery Basic concepts, general principles for design Part 1: Basic terminology, 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) DIN EN 12921-2:2010-01 EN 12921-2:2005+A1:2008
41、 (E) 6 3 Terms and definitions For the purposes of this European Standard, the terms and definitions given in EN ISO 12100-1:2003, EN 12921-1:2005 and the following apply. 3.1 alkaline any water based solution having a pH value above 7,5 3.2 dispersion water based mixture containing a liquid or soli
42、d which is not dissolved 3.3 strong alkaline solution water based solution having a pH value above 12 3.4 strong acidic solution water based solution having pH value below 4 3.5 suspension water based mixture containing solid particles in stable or unstable form 3.6 emulsion class of colloidal dispe
43、rsions containing two or more immiscible liquids such as oil in water NOTE Emulsions can be stable or unstable. 3.7 stable emulsion emulsion containing an emulsifying agent to prevent the separation of its components 3.8 unstable emulsion emulsion which will separate into its components 3.9 neutral
44、solution any water based solution having a pH value between 6.5 and 7.5 DIN EN 12921-2:2010-01 EN 12921-2:2005+A1:2008 (E) 7 4 List of significant hazards Table 1 List of significant hazards associated with machines for surface cleaning and pre-treatment using water based cleaning liquids Clause/sub
45、-clause of this standard Hazard Clause/sub-clause of EN 12921-1:20054.1 General This clause contains significant hazards, hazardous situations and events, as far as they are dealt with in this standard, identified by risk assessment as significant for this type of machinery using water-based cleanin
46、g liquids and which require action to eliminate or reduce the risk. 4.1 4.2 Mechanical hazards 4.2 4.2.1 Crushing, shearing, cutting, entanglement, drawing-in, impact 4.2.1 4.2.2 High pressure fluid ejection 4.2.2 4.2.3 Ejection of parts of the cleaning machine and/or items 4.2.3 4.2.4 Loss of stabi
47、lity (of cleaning machine and cleaning machine parts) 4.2.4 4.2.5 Personnels slip, trip and fall hazards 4.2.5 4.3. Electrical hazards These hazards can be increased by the presence of vapour, moisture, mist and/or liquid water. Areas from which vapours or liquid can escape are e.g.: internal chambe
48、rs of cleaning machines, including dead zones; tanks and spaces over liquid surfaces; exhaust and ducts chambers and enclosures; areas surrounding doors, covers and lids; areas where parts can transit during load/unload operation. 4.3 4.4 Thermal hazards 4.4 4.5 Hazards generated by noise 4.5 4.6 Ha
49、zards generated by materials and substances processed, used or emitted by the cleaning machine 4.6 4.6.1 General 4.6.1 NOTE Information on the method of risk analysis is given in EN 1050. DIN EN 12921-2:2010-01 EN 12921-2:2005+A1:2008 (E) 8 Table 1 (continued) Clause/sub-clause of this standard Hazard Clause/sub-clause of EN 12921-1:20054.6.2 Hazards resulting from contact with/or inhalation of dangerous liquids, gases, aerosol, fumes and dusts An assessment shall be carried out considering the characteristics
