SIST EN 12621:2006

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Machinery for the supply and circulation of coating materials under pressure - Safety requirements9DUQRVWQH]DKWHYHInstallations d'alimentation et de circulation de produits de revetement sous pression - Prescriptions de sécuritéFörder- und Umlaufanlagen für Beschichtungsstoffe unter Druck - Sicherheitsanforderungen87.100Oprema za nanašanje premazovPaint coating equipmentICS:SIST EN 12621:2006enTa slovenski standard je istoveten z:EN 12621:200601-maj-2006SIST EN 12621:2006SLOVENSKI
STANDARD







EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12621January 2006ICS 87.100 English VersionMachinery for the supply and circulation of coating materialsunder pressure - Safety requirementsInstallations d'alimentation et de circulation de produits derevêtement sous pression - Prescriptions de sécuritéFörder- und Umlaufanlagen für Beschichtungsstoffe unterDruck - SicherheitsanforderungenThis European Standard was approved by CEN on 9 December 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, Romania,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© 2006 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12621:2006: E



EN 12621:2006 (E) 2 Contents page Foreword.4 Introduction.5 1 Scope.6 2 Normative references.7 3 Terms and definitions.9 4 List of significant hazards.12 4.1 General.12 4.2 Mechanical hazards.12 4.3 Electrical hazards.13 4.4 Thermal hazards.13 4.5 Noise hazards.13 4.6 Vibration hazards.13 4.7 Hazards generated by dangerous substances.14 4.8 Fire and explosion hazards generated by coating and/or auxiliary materials under pressure.14 4.9 Hazards caused by failure of energy supply.14 4.10 Hazards related to failure of control systems.15 5 Safety requirements and/or measures.15 5.1 General.15 5.2 Safety requirements and measures against mechanical hazards.15 5.3 Electrical safety requirements.16 5.4 Safety requirements and measures against thermal hazards.17 5.5 Safety requirements relating to noise.18 5.6 Safety requirements relating to vibration.18 5.7 Safety requirements against dangerous substances.18 5.8 Safety requirements and protective measures against fire and explosion.19 5.9 Safety requirements against failure of energy supply.20 5.10 Safety requirements against failure of control systems.21 6 Verification of the safety requirements.21 6.1 General.21 6.2 Mechanical.21 6.3 Electrical.22 6.4 Thermal.22 6.5 Noise.22 6.6 Vibration.23 6.7 Dangerous substances.23 6.8 Fire and explosions.24 6.9 Failure of energy supply.24 6.10 Control systems.24 7 Information for use.24 7.1 General.24 7.2 Instruction handbook.25 7.3 Marking.26 Annex A (informative)
National references to exposure limit values.28 Annex B (informative)
Relationship between categories and zones.30 Annex C (informative)
Classification of construction material’s reaction to fire - National standards.31



EN 12621:2006 (E) 3 Annex ZA (informative)
Relationship between this
European Standard and the Essential Requirements of EU Directive 98/37/EC.32 Annex ZB (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive 94/9/EC.33 Bibliography.34



EN 12621:2006 (E) 4 Foreword This European Standard (EN 12621:2006) 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 July 2006, and conflicting national standards shall be withdrawn at the latest by July 2006. This European Standard 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(s), see informative Annex ZA, and ZB, which are an integral part of this European Standard. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, 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.



EN 12621:2006 (E) 5 Introduction This European Standard is a type C standard as stated in EN ISO 12100. This European Standard is part of a series of documents prepared by CEN/TC 271/WG2 specifying the health, safety and environmental protection requirements for devices, units and equipment for surface coating:  EN 1953 "Atomising and spraying equipment for coating materials";  prEN 12621 "Machinery for the supply and circulation of coating materials under pressure";  prEN 12757-1 "Mixing machinery for coating materials". The machinery concerned and the extent to which hazards, hazardous situations and events are covered are indicated in the scope of this European Standard. When provisions of this type C standard are different from those 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 provisions of this type C standard.



EN 12621:2006 (E) 6
1 Scope 1.1 This European Standard applies to the design and construction of machinery for the supply and circulation of coating and/or auxiliary materials under pressure – in the following called "machine" (see 3.1). The coating material is supplied by air pressure or airless. NOTE Machines covered by this European Standard may be linked with e.g. colour mixing machinery, atomising and spraying equipment, spray booths and stands and/or automated coating machinery.
The pressure related parts of the machines covered are classified as no higher than category I under article 9 of the Pressure Equipment Directive 97/23/EC. This European Standard deals with the significant hazards, hazardous situations and events relevant to the machinery for the supply and circulation of coating and/or auxiliary materials under pressure, when they are used as intended and under the conditions foreseen by the manufacturer (see Clause 4). Machinery for the supply and circulation of coating and/or auxiliary materials under pressure consists of the following equipment:  pump units;  pressure vessels;  non-pressurised containers;  interconnecting pipes and hoses  flanges, nozzles, couplings, supports, lifting equipment etc.;  agitators;  filters;  pulsation damping devices;  all safety devices (e.g. level monitoring equipment);  equipment for heating and/or cooling of the coating materials. The machine may be fixed or mobile. 1.2 This European Standard excludes:  pressure related hazards of equipment classified as higher than category 1 under article 9 of the Pressure Equipment Directive 97/23/EC;  atomising and spraying equipment as dealt with in EN 1953:1998 and the supply hoses for this equipment;  atomising and spraying equipment as dealt with in EN 50144-2-7:2001, EN 50260-2-7:2002 and the supply hoses for this equipment. 1.3 This European Standard does not apply to:  processing of foodstuffs and pharmaceuticals;



EN 12621:2006 (E) 7  design and construction of pipes and hoses;  design and construction of coating presses (see 3.23);  machinery for the supply of powder coating material. 1.4 This European Standard is not applicable to machinery for the supply and circulation of coating materials under pressure which are manufactured before the date of publication of this document by CEN. 2 Normative references The following referenced documents are indispensable for the application of this European Standard. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 294:1992, Safety of machinery — Safety distance to prevent danger zones being reached by the upper limbs EN 349:1993, Safety of machinery — Minimum gaps to avoid crushing of parts of the human body EN 563:1994, Safety of machinery — Temperatures of touchable surfaces — Ergonomics data to establish temperature limit values for hot surfaces EN 619:2002, Continuous handling equipment and systems — Safety and EMC requirements for equipment for mechanical handling of unit loads EN 809:1998, Pumps and pump units for liquids — Common safety requirements EN 811:1996, Safety of machinery — Safety distances to prevent danger zones being reached by the lower limbs EN 842:1996, Safety of machinery — Visual danger signals — General requirements, design and testing EN 894-1:1997, Safety of machinery — Ergonomics requirements for the design of displays and control actuators — Part 1: General principles for human interactions with displays and control actuators EN 894-2:1997, Safety of machinery — Ergonomics requirements for the design of displays and control actuators — Part 2: Displays EN 894-3:2000, Safety of machinery — Ergonomics requirements for the design of displays and control actuators — Part 3: Control actuators EN 953:1997, Safety of machinery — Guards — General requirements for the design and construction of fixed and movable guards EN 954-1:1996, Safety of machinery — Safety-related parts of control systems — Part 1: General principles for design EN 971-1:1996, Paints and varnishes — Terms and definitions for coating materials — Part 1: General terms EN 981:1996, Safety of machinery — System of auditory and visual danger and information signals EN 982:1996, Safety of machinery — Safety requirements for fluid power systems and their components — Hydraulics EN 983:1996, Safety of machinery — Safety requirements for fluid power systems and their components — Pneumatics EN 1037:1995, Safety of machinery — Prevention of unexpected start-up



EN 12621:2006 (E) 8 EN 1088:1995, Safety of machinery — Interlocking devices associated with guards — Principles for design and selection EN 1127-1:1997, Explosive atmospheres — Explosion prevention and protection — Part 1: Basic concepts and
methodology EN 1494:2000, Mobile or movable jacks and associated lifting equipment EN 1570:1998, Safety requirements for lifting tables prEN 1829-1, High pressure cleaners — High pressure water jet machines — Safety
requirements — Part 1: General description EN 1953:1998, Atomising and spraying equipment for coating materials — Safety requirements EN 13445-1:2002, Unfired pressure vessels — Part 1: General EN 13463-1:2001, Non-electrical equipment for potentially explosive atmospheres — Part 1: Basic method and requirements EN 13463-5:2003, Non-electrical equipment intended for use in potentially explosive atmospheres — Part 5: Protection by constructional safety "c" EN 13478:2001, Safety of machinery — Fire prevention and protection EN 14462:2005, Surface treatment equipment — Noise test code for surface treatment equipment including its ancillary handling equipment — Accuracy grades 2 and 3
EN 50050:2001, Electrical apparatus for potentially explosive atmospheres — Electrostatic hand-held spraying equipment EN 50059:1990, Specification for electrostatic hand-held spraying equipment for non-flammable material for
painting and finishing EN 50176:1996, Automatic electrostatic spraying installations for flammable liquid spraying material EN 60079-0:2004, Electrical apparatus for explosive gas atmospheres — Part 0: General requirements (IEC 60079-0:2004) EN 60079-15, Electrical apparatus for explosive gas atmospheres — Part 15: Type of protection "n"
(IEC 60079-15:2001, modified) EN 60204-1:1997, Safety of machinery — Electrical equipment of machines — Part 1: General requirements (IEC 60204-1:1997) EN 61000-6-1:2001, Electromagnetic compatibility (EMC) — Part 6-1: Generic standards — Immunity for residential, commercial and light-industrial environments (IEC 61000-6-1:1997, modified) EN 61000-6-2:2001, Electromagnetic compatibility (EMC) — Part 6-2: Generic standards — Immunity for industrial environments (IEC 61000-6-2:1999, modified) EN 61000-6-3:2001, Electromagnetic compatibility (EMC) — Part 6-3: Generic standards — Emission standard for residential, commercial and light-industrial environments (IEC 61000-6-3:1996, modified) EN 61000-6-4:2001, Electromagnetic compatibility (EMC) — Part 6-4: Generic standards — Emission standard for industrial environments (IEC 61000-6-4:1997, modified)



EN 12621:2006 (E) 9 EN 61010-1:2001, Safety requirements for electrical equipment for measurement, control and laboratory use — Part 1: General requirements (IEC 61010-1:2001) EN 61310-1:1995, Safety of machinery — Indication, marking and actuation — Part 1: Requirements for visual, auditory and tactile signals (IEC 61310-1:1995) EN ISO 11688-1:1998, Acoustics — Recommended practice for the design of low-noise machinery and equipment — Part 1: Planning (ISO/TR 11688-1:1995) 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 12100-2:2003, Safety of machinery — Basic concepts, general principles for design — Part 2: Technical principles (ISO 12100-2:2003) ISO 3864-1:2002, Graphical symbols — Safety colours and safety signs — Part 1: Design principles for safety signs in workplaces and public area 3 Terms and definitions For the purposes of this European Standard, the terms and definitions given in EN 971-1:1996 and EN ISO 12100-1:2003 and the following apply. 3.1 machine machinery for the supply and circulation of coating materials under pressure 3.2 coating equipment equipment used for the application of coating materials NOTE Application by means such as, but not limited to:  atomising and spraying;  extrusion;  flow coating. 3.3 pump unit equipment comprising the pump, the power supply including the transmission elements (e.g. couplings, gears), base plates 3.4 pressure vessel housing designed and built to contain coating and/or auxiliary materials under pressure including its direct attachments up to the coupling point connecting it to other equipment. A vessel may be composed of more than one chamber 3.5 container vessel without pressure used for the storage and/or mixing of coating and/or auxiliary materials 3.6 safety device device to fulfil a safety function when in use and the failure or malfunctioning of which endangers the safety or health of persons 3.7 agitator device which is used to stir or otherwise move the coating material



EN 12621:2006 (E) 10 NOTE Such device is generally used in conjunction with pressure vessels or coating material containers. Such devices may be driven by a power supply. 3.8 pulsation damping device device used to reduce pulsations which have been transmitted to the coating and/or auxiliary material by the operating cycles of the pump unit used in the machine 3.9 equipment for heating and/or cooling the coating and/or auxiliary materials equipment, which may use electrical energy or some other source of energy, such as water or gas, to create a temperature change in the coating and/or auxiliary material 3.10 coating material organic product in liquid or in paste form (see 1.9 of EN 971-1:1996) NOTE 1 Such coating materials may consist of binders, pigments, fillers, solvents, thinner and other additives. NOTE 2 Such coating materials can be:  varnishes (see 1.7 of EN 971-1:1996);  paints (see 1.36 of EN 971-1:1996);  patching compounds;  fillers (see 1.21 of EN 971-1:1996);
 sealers and adhesives. 3.11 auxiliary material material used for functions e.g.:  solvents, compressed air (for cleaning),  water, compressed air (for maintenance) 3.12 flammable substance substance in 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) NOTE “Flammable substances” and “combustible material” are equivalently used terms in this European Standard. 3.13 explosion range range of concentration of a flammable substance with air, within which an explosion can occur (see 3.13 of EN 1127-1:1997) 3.14 hazardous areas areas where hazards due to explosive atmosphere may exist. The probability of occurrence of explosive atmospheres is classified in zones. NOTE Limits of hazardous zones are given in Annex B 3.14.1 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)



EN 12621:2006 (E) 11 3.14.2 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 occasionally (see 6.3.2 of EN 1127-1:1997) 3.14.3 zone 2 place in which an explosive atmosphere consisting of a mixture with air of flammable substances in the form of gas, vapour or mist is not likely to occur in normal operation, but, if it does occur, will persist for a short period only (see 6.3.2 of EN 1127-1:1997) 3.15 equipment category ignition protection category for intended use of equipment in areas in which explosive atmospheres may occur 3.15.1 equipment Group II category 1 equipment designed to be capable of functioning in conformity with the operational parameters established by the manufacturer and ensuring a very high level of protection. Equipment in this category is intended for use in areas in which explosive atmospheres caused by mixtures of air and gases, vapours or mists or by air/dusts mixtures are present continuously, for long periods or frequently. Equipment of this category ensures the requisite level of protection, even in the event of rare malfunctions relating to equipment, and is characterised by means of protection such that:  either, in the event of failure of one means of protection, at least an independent second means provides the requisite level of protection,  or the requisite level of protection is assured in the event of two faults occurring independently of each other 3.15.2 equipment Group II category 2 equipment designed to be capable of functioning in conformity with the operational parameters established by the manufacturer and ensuring a high level of protection. Equipment in this category is intended for use in areas in which explosive atmospheres caused by mixtures of air and gases, vapours or mists or by air/dusts mixtures are likely to occur. The means of protection relating to equipment in this category ensures the requisite level of protection, even in the event of frequently occurring disturbances or equipment faults that normally have to be taken into account 3.15.3 equipment Group II category 3 equipment designed to be capable of functioning in conformity with the operational parameters established by the manufacturer and ensuring a normal level of protection. Equipment in this category is intended for use in areas in which explosive atmospheres caused by mixtures of air and gases, vapours or mists or by air/dusts mixtures are unlikely to occur or, if they do occur, are likely to do so only infrequently and for a short period only. Equipment of this category ensures the requisite level of protection during normal operation. 3.16 chemical reaction process where the coating material or any part of the coating material reacts with the materials of construction of the machine and/or process which takes place between the components of coating materials



EN 12621:2006 (E) 12 3.17 maximum allowable pressure maximum pressure for which the equipment is designed as specified by the manufacturer 3.18 maximum allowable temperature maximum temperature for which the equipment is designed as specified by the manufacturer 3.19 hose flexible conduit intended for the transport of coating and/or auxiliary materials, when connected together for integration into a pressure system 3.20 pipe rigid conduit intended for the transport of coating and/or auxiliary materials, when connected together for integration into a pressure system 3.21 functional test test done on every machine operated under normal operation conditions 3.22 type test test conducted at the design stage of the product which proves the conformity with the required safety factors and/or measures 3.23 coating press hydraulically/pneumatically powered equipment for transportation of adhesives, coating and/or auxiliary materials of high viscosity NOTE This includes for instance two-column installations for viscous materials such as solvents, adhesives and mastics. 4 List of significant hazards 4.1 General This clause contains the significant hazards, hazardous situations and events as far as they are dealt with in this European Standard, identified by risk assessment as significant for these types of machines and which require action to eliminate or reduce the risk. The following hazards may occur when installing, operating, cleaning or maintaining the machine. NOTE Information on the method of risk analysis is given in EN 1050. 4.2 Mechanical hazards 4.2.1 Crushing, drawing in or trapping, impact hazards: These hazards are related to:  physical contact with fixed or moving parts of the machine;  instability of mobile machines (causing tipping or moving).



EN 12621:2006 (E) 13 4.2.2 High pressure fluid injection or ejection hazard These hazards are related to:  Overpressure;  rupture of hosing, piping or joints due to failure, breakdown, vibration, shock loading, material fatigue, erosion or corrosion. 4.3 Electrical hazards 4.3.1 Electrical shock (by direct or indirect contact) Such hazards can occur, for instance by touching:  electrically live parts that are non insulated for operational reasons;  conductive parts which are not at a dangerous voltage under normal operation, but in the case of failure could be;  electrically live parts when the insulation is damaged by contact with solvents or by mechanical parts. 4.3.2 External influence on electrical equipment hazard Such hazards can occur, for instance when interaction of the electrostatic high voltage equipment with construction elements of the control and safety systems can cause dangerous malfunctions for instance short circuits on electronic safety circuits, alarm units. 4.4 Thermal hazards These hazards are related to:  the application of heated or cooled coating materials;  the use of heated air;  unexpected ejection of hot coating materials;  unintended heating of any part of the machine during operation;  failure of indication of the maximum allowable temperature of the content. 4.5 Noise hazards Hazardous noise levels can be reached for instance by noise emission of pumps, handling devices, compressed air equipment (motors, valves etc.) when the coating and/or auxiliary materials are pressurised and supplied and/or circulated under pressure. Noise can cause hearing impairment, accidents to operators of the machine or persons working near it due to interference with verbal communication and with perception of acoustic danger signals, extra-auditory effects, shock reactions. 4.6 Vibration hazards In particular, vibrations could generate effects on the muscular/bone structure, neurological and vascular disorders. Such vibration hazards can be generated by e.g.:  coating mat
...