1、BRITISH STANDARDBS EN 12921-2:2005Machines for surface cleaning and pre-treatment of industrial items using liquids or vapours Part 2: Safety of machines using water based cleaning liquidsICS 25.220.10; 25.220.20g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g4
2、4g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58+A1:2008BS EN 12921-2:2005+A1:2008This British Standard was published under the authority of the Standards Policy and Strategy Committee on 5 September 2005 BSI 2009ISBN 978 0 580 63160 3N
3、ational forewordThis British Standard is the UK implementation of EN It supersedes BS EN The start and finish of text introduced or altered by amendment is indicated in the text by tags. Tags indicating changes to CEN text carry the number of the CEN amendment. For example, text altered by CEN amend
4、ment A1 is indicated by !“The UK participation in its preparation was entrusted to Technical Committee A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are
5、responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.Amendments/corrigenda issued since publicationDate Comments31 May 2009 Implementation of CEN amendment A1:2008which is withdrawn.12921-2:2005+A1:20012921-2:2005MCE/3/8, Thermoproc
6、essing equipment Safety8. EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE 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 bas
7、ed cleaning liquids Machines de nettoyage et de pr-traitement de pices 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 Flssigk
8、eiten oder Dampffasen - Teil 2: Anlagen, in denen wssrige Reinigungsmittel 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 stipula
9、te 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 Management Centre or to any CEN member. This European Standard ex
10、ists 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 Management Centre has the same status as the official versions. CEN members are the national standards
11、 bodies of Austria, 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
12、. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES 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
13、: EEN 12921-2:2005+A1:2008 (E) 2 Contents page Foreword3 Introduction .4 1 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
14、 and measures against thermal hazards 11 5.5 Safety requirements and measures 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 combinat
15、ions14 5.8 Safety requirements and measures against failure of energy supply .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
16、 by the cleaning machines16 6.7 Hazard combinations 16 6.8 Failure of energy 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
17、 the Essential Requirements of EU Directive 98/37/EC, amended by 98/79/EC“ .18 Annex ZB (informative) !Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC“.19 BS EN 12921-2:2005+A1:2008EN 12921-2:2005+A1:2008 (E) 3 Foreword This document (EN 12921-2:
18、2005+A1:2008) has been prepared by Technical Committee CEN /TC 271, “Surface treatment 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 M
19、ay 2009, and conflicting national standards shall be withdrawn at the latest by 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
20、 ! “. !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 EC Directive(s). For relationship with EC Directive(s), see informative Annexes ZA and ZB, which are integral parts of this d
21、ocument.“ This standard is part of a series of standards in the area of safety 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
22、the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slova
23、kia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. BS EN 12921-2:2005+A1:2008EN 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-
24、1. The machinery concerned and the extent to which hazards, hazardous situations 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
25、 precedence over the provisions of the other standards, for machines that have been 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 liqui
26、ds Part 3: Safety of machines using flammable cleaning liquids Part 4: Safety of machines using halogenated solvents. BS EN 12921-2:2005+A1:2008EN 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
27、the following called “cleaning machines“) of industrial items using water based cleaning 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 1
28、2921-1. Both parts together cover all significant hazards relevant for cleaning machines 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 prece
29、dence over the respective requirements in EN 12921-1. This standard should be applied 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
30、liquids of which evaporating can lead to hazards caused by explosive atmospheres. Water 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
31、 does not apply to machinery and related equipment excluded from the scope of EN 12921-1. 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 T
32、he following referenced documents are indispensable for the application 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 746-1, Industrial thermoprocessing equipment Pa
33、rt 1: Common safety requirements for industrial thermoprocessing equipment EN 746-2, 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
34、EN 1717, Protection against pollution of potable water in water installations and general requirements of devices to prevent pollution by backflow EN 12921-1:2004, Machines for surface cleaning and pre-treatment of industrial items using liquids or vapours Part 1: common safety requirements EN 12921
35、-3:2004, Machines for surface cleaning and pre-treatment of industrial items using 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
36、 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 terminology, methodology (ISO 12100-1:2003) BS EN 12921-2:2005+A1:2008EN 12921-2:2005+A1:2008 (E) 6 EN ISO 12100-2; Safety of machinery B
37、asic 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 12921-1:2004 and the following apply. 3.1 alkaline any water based solution havi
38、ng a pH value above 7,5 3.2 dispersion water based mixture containing a liquid or solid 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 conta
39、ining solid particles in stable or unstable form 3.6 emulsion class of colloidal dispersions 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 componen
40、ts 3.8 unstable emulsion emulsion which will separate into its components 3.9 neutral solution any water based solution having a pH value between 6.5 and 7.5 BS EN 12921-2:2005+A1:2008EN 12921-2:2005+A1:2008 (E) 7 4 List of significant hazards Table 1 List of significant hazards associated with mach
41、ines for surface cleaning and pre-treatment using water based cleaning liquids Clause/sub-clause of this standard Hazard Clause/sub-clause of EN 12921-1:20044.1 General This clause contains significant hazards, hazardous situations and events, as far as they are dealt with in this standard, identifi
42、ed by risk assessment as significant for this type of machinery using water-based cleaning 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
43、.2 4.2.3 Ejection of parts of the cleaning machine and/or items 4.2.3 4.2.4 Loss of stability (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
44、/or liquid water. Areas from which vapours or liquid can escape are e.g.: internal chambers 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 loa
45、d/unload operation. 4.3 4.4 Thermal hazards 4.4 4.5 Hazards generated by noise 4.5 4.6 Hazards 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. BS EN 12921-2:2005+A1:2
46、008EN 12921-2:2005+A1:2008 (E) 8 Table 1 (continued) Clause/sub-clause of this standard Hazard Clause/sub-clause of EN 12921-1:20044.6.2 Hazards resulting from contact with/or inhalation of dangerous liquids, gases, aerosol, fumes and dusts An assessment shall be carried out considering the characte
47、ristics of the water based cleaning liquid for which the cleaning machine is designed, the material(s) to be processed, the properties of the contaminants to be removed and their interaction with the characteristics of the cleaning machine. The level of risk depends on the dangerous properties of th
48、e substances used or processed, their compatibility with the characteristics and material of construction of the cleaning machine, the likelihood that exposure will occur and the degree of exposure. The hazards generated by contact with/or inhalation of dangerous fluids, gases, mists, fumes and dust
49、 can be caused by e.g.: contact with irritant of corrosive chemicals (e.g. by pickling, passivating); inhalation of vapours, powder or mist (e.g. during preparation of solutions for chromating and phosphating); backflow of water based cleaning liquid into the public water supply. The above mentioned hazards can occur in the following situations and can be caused by: handling of the cleaning products (due to the necessity of mixing and/or the reaction with water) during the filling and refilling of the cleaning machi
