EN 1539:2009

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Trockner und Öfen, in denen brennbare Stoffe freigesetzt werden - SicherheitsanforderungenSéchoirs et fours dans lesquels se dégagent des substances inflammables - Prescriptions de sécuritéDryers and ovens, in which flammable substances are released - Safety requirements25.180.01Industrial furnaces in generalICS:Ta slovenski standard je istoveten z:EN 1539:2009SIST EN 1539:2010en,fr,de01-junij-2010SIST EN 1539:2010SLOVENSKI
STANDARDSIST EN 1539:20021DGRPHãþD

EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1539
November 2009 ICS 25.180.01 Supersedes EN 1539:2000English Version
Dryers and ovens, in which flammable substances are released - Safety requirements
Séchoirs et fours dans lesquels se dégagent des substances inflammables - Prescriptions de sécurité
Trockner und Öfen, in denen brennbare Stoffe freigesetzt werden - Sicherheitsanforderungen This European Standard was approved by CEN on 17 October 2009.
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 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 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 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.
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B-1000 Brussels © 2009 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1539:2009: ESIST EN 1539:2010

Basis for air flow calculation of chamber dryers and continuous flow dryers . 38A.1Chamber dryers . 38A.1.1Calculation basis for chamber dryers . 38A.2Continuous flow dryers . 43A.2.1Calculation basis for continuous flow dryers . 43A.2.2Calculation basis for continuous flow dryers for powder coatings . 45Annex B (informative)
Examples of calculation . 46B.1Chamber dryers . 46B.1.1Example 1: Calculation of the required minimum exhaust flow (see 3.20). 46B.1.2Example 2: Calculation of the maximum admissible amount of varnish. 47B.2Continuous flow dryers . 48SIST EN 1539:2010

Concentration measurement in dryers . 52C.1General . 52C.2Requirements for concentration measuring systems . 52C.3Calculation of the lower explosion limit at drying temperature . 53C.3.1Influence of temperature on the indicated value of concentration (physical influence) . 53C.3.2Influence of the temperature of mixture on the kinetics of reaction (chemical influence) . 54C.3.3Consideration of chemical and physical influences . 54Annex D (normative)
Explosion reliefs . 55Annex ZA (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive Machinery 98/37/EC . 56Annex ZB (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC . 57Bibliography . 58
Figures Figure 1 — Maximum admissible concentration of flammable substances and admissible operating ranges for dryers with limited concentration . 28Figure A.1 — Dependency of γγγγ versus ττττ . 42 Tables Table 1 — List of significant hazards . 12Table 2 — Requirements according to the operating ranges . 27Table 3 — Verification . 32 SIST EN 1539:2010

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, 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 the United Kingdom. SIST EN 1539:2010

1 Scope This European Standard deals with all significant hazards, hazardous situations and hazardous events relevant to ovens and dryers in which flammable substances are released by evaporation from and curing of coating materials. This European Standard is only applicable to machines which are used as intended and under the conditions which are foreseeable as malfunction by the manufacturer (see Clause 4). This European Standard is not applicable to:  ovens and dryers in which flammable substances are released by evaporation from and curing of coating materials, in which the concentration of these flammable substances shall not, under no circumstances, exceed 3 % of the LEL; NOTE 1 These machines are dealt with in EN 746-1 and EN 746-2.  combined spraying and drying booths; NOTE 2 EN 13355
deals with combined spraying and drying booths.  ovens for hardening metals;  sintering furnaces;  enamelling plants;  portable heating systems for drying (for instance infrared radiant heaters, hot-air blowers, blow-dryers);  machinery for production of pharmaceutical products;  machinery for production of food;  solvent recovery plants;  distillation and/or refraction plants;  textile dry-cleaning systems. This European Standard is not applicable to machinery manufactured before the date of its publication as EN. 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 619, Continuous handling equipment and systems — Safety and EMC requirements for equipment for mechanical handling of unit loads EN 746-1, Industrial thermoprocessing equipment — Part 1: Common safety requirements for industrial thermoprocessing equipment SIST EN 1539:2010

Radiation emission measurement procedure EN 12433-1, Industrial, commercial and garage doors and gates — Terminology — Part 1: Types of doors EN 12433-2, Industrial, commercial and garage doors and gates — Terminology — Part 2: Parts of doors EN 12445, Industrial, commercial and garage doors and gates — Safety in use of power operated doors — Test methods EN 12453, Industrial, commercial and garage doors and gates — Safety in use of power operated doors — Requirements EN 12635, Industrial, commercial and garage doors and gates — Installation and use EN 12978, Industrial, commercial and garage doors and gates — Safety devices for power operated doors and gates — Requirements and test methods EN 13023, Noise measurement methods for printing, paper converting, paper making machines and auxiliary equipment — Accuracy grades 2 and 3 EN 13463-1:2009, Non-electrical equipment for use in potentially explosive atmospheres — Part 1: Basic method and requirements EN 13478, Safety of machinery — Fire prevention and protection EN 13501-1:2007+A1:2009, Fire classification of construction products and building elements — Part 1: Classification using data from reaction to fire tests EN 14462, Surface treatment equipment — Noise test code for surface treatment equipment including its ancillary handling equipment — Accuracy grades 2 and 3 EN 14994, Gas explosion venting protective systems EN 50104, Electrical apparatus for the detection and measurement of oxygen — Performance requirements and test methods EN 60079-0:2006, Electrical apparatus for explosive gas atmospheres — Part 0: General requirements (IEC 60079-0:2004, modified) EN 60070-29-1, Explosive atmospheres — Part 29-1: Gas detectors — Performance requirements of detectors for flammable gases
Generic standards — Immunity for industrial
environments (IEC 61000-6-2:2005) 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) EN ISO 13732-1, Ergonomics of the thermal environment — Methods for the assessment of human responses to contact with surfaces — Part 1: Hot surfaces (ISO 13732-1:2006) EN ISO 13849-1:2008, Safety of machinery — Safety-related parts of control systems — Part 1: General principles for design (ISO 13849-1:2006) EN ISO 14122-2, Safety of machinery — Permanent means of access to machinery — Part 2: Working platforms and walkways (ISO 14122-2:2001) EN ISO 14122-3, Safety of machinery — Permanent means of access to machinery — Part 3: Stairs, stepladders and guard-rails (ISO 14122-3:2001) EN ISO 14122-4, Safety of machinery — Permanent means of access to machinery — Part 4: Fixed ladders (ISO 14122-4:2004) IEC 60405, Nuclear instrumentation — Constructional requirements and classification of radiometric gauges IEC 60519-1, Safety in electroheat installations — Part 1: General requirements IEC 60519-6, Safety in electroheat installations — Part 6: Specifications for safety in industrial microwave heating equipment 3 Terms and Definitions For the purposes of this document the terms and definitions given in EN ISO 12100-1:2003 and the following apply. 3.1 dryer machine in which flammable substances are released by evaporation and curing 3.2 chamber dryer enclosed dryer which are charged in batch quantities NOTE These dryers are relatively simple to operate and maintain. Conditions and knowledge of solvent loading, temperatures, solvent vapour concentration and the degree of product dryness can vary considerably and thus increase the risk from hazards. 3.3 continuous flow dryer dryer with openings through which the materials being processed can be introduced and removed (conveyed) continuously NOTE Continuous flow dryers can be divided into sections in order to influence individual steps of the drying process. SIST EN 1539:2010

NOTE 2 Mixtures containing solvents can be printing and coating materials, e.g. inks, varnishes, lacquers. NOTE 3 Solvents are also used as cleaning or washing agents, and could enter the dryer. NOTE 4 The terms "flammable" and "combustible" are equivalent in this European Standard. 3.10 released flammable substances gases and vapours released during drying which could form an explosive mixture with air SIST EN 1539:2010

[EN 13237:2003, 3.66] NOTE The terms "flammable" and "combustible" are equivalent in this European Standard. 3.14 flammability temperature lowest temperature at which symptoms of combustion can be found on the coated or uncoated material NOTE Flammability temperature of a material is a safety parameter for which a continuous combustion could be stimulated under specified test conditions. It could be determined for combustible solid substances such as paper or similar base stock and their coating. Signs of combustion are flames, glowing or pyrogenic symptoms. 3.15 limiting temperature corresponds to the lower of the following values:  the flammability temperature (see 3.14); or  0,8 times the ignition temperature (see 3.13) NOTE See 6.4.2 of EN 1127-1:2007. 3.16 lower explosion limit (LEL) lower limit of the explosion range NOTE 1 "Explosion limit" and "ignition limit" are equivalent. In accordance with international usage only the term "explosion limit" is used in this standard. See 3.74 of EN 13237:2003. NOTE 2 Explosion limits are the limits of the explosion range. Explosion range is the range of concentration of a flammable substance within air, in which an explosion can occur. See 3.33 of EN 13237:2003. 3.17 explosive mixture mixture with air and combustible substances in the form of gases, vapours, mist or dust, in which after ignition has occurred, combustion spreads to the entire unburned mixture
NOTE 1 The total space includes ventilation of all section(s) (either single or multiple) and the recirculation systems of the dryer and ends at the outlet connection of the dryer housing to the external exhaust. NOTE 2 The total space does not include any charged materials, supports, transport systems, thermal cleaning systems, chimneys or other ducts between sections or equipment. 3.26 effective space part of the total space in which the material to be dried is charged or moved 3.27 main vaporization time period of time during which the major quantity of flammable substances has been released SIST EN 1539:2010

5.2, 7.2 4.2 4.1, 4.2, 4.6, 4.8, 4.10, 4.14, 5.1, 5.2, 5.3
Table 1 (continued) Hazard factors Location or situation of the hazard Specific requirements Applicable clauses of this standard General requirements Applicable clauses of EN ISO 12100-1:2003 EN ISO 12100-2:2003 4.2.1 Shearing, crushing and drawing-in hazards by unprotected moving parts of the machine, parts with hazardous surfaces and parts moving in an uncontrolled way a) actuators, hoisting devices and automatic handling systems (e.g. robots) during charging and discharging of dryers; b) charging assistances and conveying systems for continuous flow dryers; c) fans (e. g. injuries caused by rundown of fan wheel) and air inlets; d) damper adjuster; e) moving parts of dryers (e.g. doors, gates, hoods, top and bottom boxes of continuous flow dryers). 5.2.1, 7.2.1, 7.2.2 4.2.1, 4.2.2 4.1, 4.2.1, 4.6, 4.8, 4.10, 4.14, 5.1,5.2, 5.3, 5.5.5 4.2.2 Missing means of escape for operators in dryers which could be entered a) when obstacles or obstructions can impede a quick evacuation by the operator(s) from the dryer in case of mechanical accident or fire; b) in case of an accidental significant lowering of pressure inside a dryer (e. g.: obstruction of air inlet) capable: 1) of clamping the doors by mechanical deformation of the structure of the dryer; and/or 2) of increasing the door opening effort beyond human capability. 5.2.2, 7.2.1
5.5.3 4.2.3 Personnel's slip, trip, twist and fall hazards a) on ladders, gangways, platforms or stairs; b) on gratings at floor level; c) on non-slip resistant floors; d) due to insufficient lighting. 5.2.3 4.10 4.2.1, 5.5.6
4.3 Electrical hazards Shock currents (by direct or indirect contact) caused by e.g.: a) electrically live parts that are not insulated for operational reasons (e.g. on IR-radiators); b) electrically live parts when the insulation is damaged by contact with solvents or by mechanical effects. 5.3 4.3
4.4 Thermal hazards Burns and scalds, caused by contact with hot media, for instance: a) contact with hot surfaces of the dryer; b) radiation of heat sources; c) flame, electric arcs or explosions, see also 4.8. 5.4, 7.2.1 4.4
4.5 Hazards generated by noise Noise exposure, hearing loss and/or physiological impacts caused by noise emissions from e.g.: a) fans; b) high air velocities in ducts and equipment; c) drives and conveyors; d) resonant vibrations; e) burners. 5.5, 7.1, 7.2.1 4.5 4.2.2, 4.3, 5.4.2 SIST EN 1539:2010

4.4, 4.11.1 up to 4.11.10, 4.12.1 up to 4.12.3, 4.13, 4.14 4.10 Hazards by malfunction of control system
5.10, 7.2
4.4, 4.11, 4.12, 4.13, 4.14 4.11 Failure of energy supply a) loss of monitoring devices and thus reduction of forced ventilation flow rate; b) unexpected cut-off of control systems; c) loss of monitoring devices and thus exceeding of maximum concentration of flammable substances in a part of the total space; d) unexpected ejection of thermal transfer media (vapour, hot oil, hot water); e) failure of lighting. 5.9.1.5, 5.11, 7.2.2
4.11.4, 4.11.5 5 Safety requirements and/or protective measures 5.1 General Dryers shall comply with the safety requirements and/or protective measures of this clause. In addition, dryers shall be designed according to the principles of EN ISO 12100 (all parts) for relevant but not significant hazards (for instance sharp edges), which are not dealt with by this European Standard. SIST EN 1539:2010
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