EN 12921-3:2005
(Main)Machines for surface cleaning and pre-treatment of industrial items using liquids or vapours - Part 3: Safety of machines using flammable cleaning liquids
Machines for surface cleaning and pre-treatment of industrial items using liquids or vapours - Part 3: Safety of machines using flammable cleaning liquids
This document 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 cleaning liquids, even in emulsion form, which can potentially create, even temporarily, a condition of flammability.
This document applies in combination with prEN 12921-1:2004. Both parts together cover all significant hazards relevant for cleaning machines of 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 document take precedence over the respective requirements of prEN 12921-1:2004.
To the extend of this document the terms combustible materials and flammable 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 present 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 document does not apply to machinery and related equipment excluded from the scope of
prEN 12921-1:2004.
This document is not applicable to cleaning machines of industrial items using flammable cleaning liquids which are manufactured before the publication of this document by CEN.
Maschinen zur Oberflächenreinigung und -vorbehandlung von industriellen Produkten mittels Flüssigkeiten oder Dampfphasen - Teil 3: Sicherheit von Anlagen, in denen brennbare Reinigungsflüssigkeiten verwendet werden
Diese Norm behandelt signifikante Gefährdungen von Maschinen zur Oberflächenreinigung und vorbehandlung - im Folgenden Reinigungsanlagen genannt - von industriellen Produkten, in denen brennbare Reinigungsflüssigkeiten oder ein Gemisch aus Reinigungsflüssigkeiten verwendet werden, auch in Form von Emulsionen, durch die möglicherweise, auch nur zeitweise, ein brennbarer Zustand erreicht werden kann.
Diese Norm ist in Verbindung mit prEN 12921-1:2004 anzuwenden. Zusammen decken beide Teile alle signifikanten Gefährdungen für Reinigungsanlagen für industrielle Produkte, in denen Flüssigkeiten oder Dampfphasen verwendet werden, wenn sie bestimmungsgemäß und unter den vom Hersteller vorgesehenen Bedingungen, verwendet werden (siehe Abschnitt 4). Die in diesem Dokument beschriebenen spezifischen Anforderungen gelten vor den entsprechenden Anforderungen von prEN 12921-1:2004.
Im Sinne dieser Norm werden die Begriffe brennbar und explosionsfähig äquivalent verwendet.
ANMERKUNG 1 Eine Flüssigkeit kann nur bei engem Kontakt ihrer Moleküle mit Luftsauerstoff brennen. Eine Zündung ist möglich, wenn sich Dampf aus der Flüssigkeit in der Luft anreichert oder die brennbare Flüssigkeit als feine Verteilung kleiner Tröpfchen in der Luft vorliegt (Aerosole).
ANMERKUNG 2 In der Praxis unterscheiden sich Brände und Explosionen in Ausmaß und Intensität der Reaktion und durch die momentanen Auswirkungen auf die Umwelt.
Diese Norm gilt nicht für Maschinen und deren Ausrüstung, die vom Anwendungsbereich der prEN 12921 1:2004 ausgeschlossen sind.
Diese Norm gilt nicht für Reinigungsanlagen von industriellen Produkten, in den brennbare Flüssigkeiten verwendet werden, die vor Veröffentlichung dieser EN durch CEN hergestellt wurden.
Machines de nettoyage et de prétraitement de pièces industrielles utilisant des liquides ou des vapeurs - Partie 3: Sécurité des machines utilisant des liquides de nettoyage inflammables
La présente Norme européenne ne traite que des phénomènes dangereux significatifs des machines de
nettoyage et de pré-traitement � appelées dans la suite du texte « machines de nettoyage » � de pièces
industrielles utilisant des liquides de nettoyage inflammables ou des mélanges de liquides de nettoyage,
même sous la forme d�émulsion, susceptibles de créer, même temporairement, des conditions favorables à
l�inflammation.
La présente Norme européenne s'applique conjointement avec le EN 12921-1. L�ensemble de ces deux
parties couvre de tous les phénomènes dangereux significatifs communs aux machines utilisant des liquides
ou des vapeurs, lorsqu�elles sont utilisées comme prévu et dans les conditions prévues par le fabricant (voir
Article 4). Les prescriptions particulières spécifiées dans la présente Norme européenne prévalent sur les
prescripions correspondantes de l�EN 12921-1.
Dans le présent document, « matériau combustible » est également appelée « substance inflammable » ou
« explosible ».
NOTE 1 Les conditions d�inflammabilité ne peuvent être générées que lorsque des molécules de fluide sont intimement
en contact avec l�oxygène de l�air. L�inflammation est possible lorsque : le fluide génère une concentration de vapeur dans
l�air ou le fluide inflammable est en suspension sous forme de fine gouttelettes dans l�air (aérosols).
NOTE 2 En pratique, les explosions et les incendies diffèrent par la taille et l�intensité de la réaction et par les effets
instantanés sur l�environnement.
La présente Norme européenne ne s'applique pas aux machines et équipements annexes exclus du domaine
d'application de l�EN 12921-1.
La présente Norme européenne ne s'applique pas aux machines de nettoyage de pièces industrielles utilisant
des liquides de nettoyage inflammables fabriquées avant la publication de la présente Norme européenne par
le CEN.
Naprave za površinsko čiščenje in predobdelavo industrijskih proizvodov s pomočjo tekočin ali par - 3. del: Varnost naprav, v katerih se za čiščenje uporabljajo vnetljive tekočine
General Information
- Status
- Withdrawn
- Publication Date
- 03-May-2005
- Withdrawal Date
- 25-Nov-2008
- Technical Committee
- CEN/TC 271 - Surface treatment equipment - Safety
- Current Stage
- 9960 - Withdrawal effective - Withdrawal
- Start Date
- 26-Nov-2008
- Completion Date
- 26-Nov-2008
- Directive
- 98/37/EC - Machinery
Relations
- Effective Date
- 22-Dec-2008
- Effective Date
- 28-Jan-2026
- Effective Date
- 22-Dec-2008
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Frequently Asked Questions
EN 12921-3:2005 is a standard published by the European Committee for Standardization (CEN). Its full title is "Machines for surface cleaning and pre-treatment of industrial items using liquids or vapours - Part 3: Safety of machines using flammable cleaning liquids". This standard covers: This document 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 cleaning liquids, even in emulsion form, which can potentially create, even temporarily, a condition of flammability. This document applies in combination with prEN 12921-1:2004. Both parts together cover all significant hazards relevant for cleaning machines of 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 document take precedence over the respective requirements of prEN 12921-1:2004. To the extend of this document the terms combustible materials and flammable 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 present 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 document does not apply to machinery and related equipment excluded from the scope of prEN 12921-1:2004. This document is not applicable to cleaning machines of industrial items using flammable cleaning liquids which are manufactured before the publication of this document by CEN.
This document 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 cleaning liquids, even in emulsion form, which can potentially create, even temporarily, a condition of flammability. This document applies in combination with prEN 12921-1:2004. Both parts together cover all significant hazards relevant for cleaning machines of 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 document take precedence over the respective requirements of prEN 12921-1:2004. To the extend of this document the terms combustible materials and flammable 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 present 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 document does not apply to machinery and related equipment excluded from the scope of prEN 12921-1:2004. This document is not applicable to cleaning machines of industrial items using flammable cleaning liquids which are manufactured before the publication of this document by CEN.
EN 12921-3:2005 is classified under the following ICS (International Classification for Standards) categories: 25.220.10 - Surface preparation; 25.220.20 - Surface treatment. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 12921-3:2005 has the following relationships with other standards: It is inter standard links to EN 12921-3:2005+A1:2008, EN 12921-2:2005+A1:2008; is excused to EN 12921-1:2005. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
EN 12921-3:2005 is associated with the following European legislation: EU Directives/Regulations: 94/9/EC, 98/37/EC; Standardization Mandates: M/BC/CEN/88/13, M/BC/CEN/92/46. When a standard is cited in the Official Journal of the European Union, products manufactured in conformity with it benefit from a presumption of conformity with the essential requirements of the corresponding EU directive or regulation.
EN 12921-3:2005 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Maschinen zur Oberflächenreinigung und -vorbehandlung von industriellen Produkten mittels Flüssigkeiten oder Dampfphasen - Teil 3: Sicherheit von Anlagen, in denen brennbare Reinigungsflüssigkeiten verwendet werdenMachines de nettoyage et de prétraitement de pieces industrielles utilisant des liquides ou des vapeurs - Partie 3: Sécurité des machines utilisant des liquides de nettoyage inflammablesMachines for surface cleaning and pre-treatment of industrial items using liquids or vapours - Part 3: Safety of machines using flammable cleaning liquids97.080Aparati za nego talFloor treatment appliancesICS:Ta slovenski standard je istoveten z:EN 12921-3:2005SIST EN 12921-3:2005en01-julij-2005SIST EN 12921-3:2005SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12921-3May 2005ICS 25.220.10; 25.220.20English versionMachines for surface cleaning and pre-treatment of industrialitems using liquids or vapours - Part 3: Safety of machines usingflammable cleaning liquidsMachines de nettoyage et de prétraitement de piècesindustrielles utilisant des liquides ou des vapeurs - Partie 3:Sécurité des machines utilisant des liquides de nettoyageinflammablesMaschinen zur Oberflächenreinigung und -vorbehandlungvon industriellen Produkten mittels Flüssigkeiten oderDampfphasen - Teil 3: Sicherheit von Anlagen, in denenbrennbare Reinigungsflüssigkeiten verwendet werdenThis European Standard was approved by CEN on 21 March 2005.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2005 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12921-3:2005: ESIST EN 12921-3:2005
Determination of inherently limited heating of cleaning machines.29 Annex B (informative)
Classification of flammable liquids according to Directive 67/548/EEC.30 Annex C (informative)
Area classification examples for cleaning machines using flammable cleaning liquids.31 Annex ZA (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive 98/37/EC.35 Bibliography.36
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 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 954-1, Safety of machinery – Safety-related parts of control systems – Part 1: General principles for design EN 1127-1:1997, 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 vapours – 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 50015:1998, 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 for explosive gas atmosphere – Part 0: General requirements (IEC 60079-0:2004) SIST EN 12921-3:2005
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 60079-18, 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 60204-1, 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 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) 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 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 of 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 flammable 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) SIST EN 12921-3:2005
surface cleaning and pre-treatment using flammable cleaning liquids Clause/sub-clause of this European 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 document, identified by risk assessment as significant for this type of machinery using flammable cleaning liquids and which requires action to eliminate or reduce the risk. NOTE Information on the method of risk analysis is given in EN 1050. 4.1 4.2 Mechanical hazards 4.2 4.2.2 Crushing, shearing, cutting, entanglement, drawing-in, impact 4.2.1 4.2.3 High pressure fluid ejection 4.2.2 4.2.4 Ejection of parts of the cleaning machine and/or items 4.2.3 4.2.5 Loss of stability (of cleaning machine and cleaning machine parts) 4.2.4 4.2.6 Personnel's slip, trip and fall hazards 4.2.5 4.3 Electrical hazards 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 4.6.2 Hazards resulting from contact with/or inhalation of dangerous liquids, gases, aerosol, vapours, fumes and dusts 4.6.2 4.6.3 Fire and explosion hazard 4.6.3 4.6.3.1 Fire hazard 4.6.3, 4.6.3.1 4.6.3.2 Explosion hazard
4.6.3.2.2 Generation of explosive atmosphere Generation of an explosive atmosphere is related to flammable cleaning liquids under the following circumstances:
as a vapour, when the vapour concentration in air is within the explosive range between LEL and UEL; as a suspension of fine droplets. Examples of flammable substances which increase the concentration above normal are:
high cleaning liquid temperature leading to formation of flammable vapours; insufficient cleaning liquid coverage of heating elements; leaks or drips of cleaning liquid on hot surfaces; spraying of the cleaning liquid generating fine droplets and mist; change in composition of the flammable cleaning liquid.
4.6.3.2.3 Ignition of an explosive atmosphere Ignition of an explosive atmosphere is related to:
4.6.3.2.5 Unexpected chemical reactions Unexpected chemical reactions leading to decomposition and release of flammable vapours or explosion. NOTE Among other types of chemical substances, ethers, olefins and aldehydes are prone to formation of peroxides which can decompose spontaneously in an exothermic reaction.
4.6.3.2.6 Ejection of parts of the cleaning machines in case of explosions Ejection of parts of the cleaning machine (e.g. covers, doors) or the content of the machine (e.g. items, cleaning liquid) are related to an explosion.
4.7 Hazards combinations 4.7 4.8 Hazards caused by failure of energy supply 4.8 4.9 Hazards related to failure of control systems 4.9
5 Safety requirements and/or measures 5.1 General Machinery shall comply with the safety requirements and/or protective measures of this clause. In addition, the cleaning machine shall be designed according to the principles of EN ISO 12100-2 for hazards relevant but not significant which are not dealt with by this document (e.g. sharp edges). 5.2 Mechanical hazards 5.2.1 General Shall be according to 5.1 and 5.2 of EN 12921-1:2005. SIST EN 12921-3:2005
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