SIST EN 16770:2018

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Varnost lesnoobdelovalnih strojev - Odsesovalni sistemi za lesne odrezke in prah za notranjo inštalacijo - Varnostne zahteveSicherheit von Holzbearbeitungsmaschinen - Absauganlagen für Holzstaub und Späne für Innenaufstellung - Sicherheitstechnische AnforderungenSécurité des machines pour le travail du bois - Installations d'extraction de copeaux et de poussières - Prescriptions de sécuritéSafety of woodworking machines - Chip and dust extraction systems for indoor installation - Safety requirements79.120.10Lesnoobdelovalni strojiWoodworking machinesICS:Ta slovenski standard je istoveten z:EN 16770:2018SIST EN 16770:2018en,fr,de01-december-2018SIST EN 16770:2018SLOVENSKI
STANDARD



SIST EN 16770:2018



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 16770
September
t r s z ICS
y {ä s t rä s r English Version
Safety of woodworking machines æ Chip and dust extraction systems for indoor installation æ Safety requirements Sécurité des machines pour le travail du bois æ Systèmes d 5extraction de copeaux et de poussières pour installation en intérieur æ Prescriptions de sécurité
Sicherheit von Holzbearbeitungsmaschinen æ Absauganlagen für Holzstaub und Späne für Innenaufstellung æ Sicherheitstechnische Anforderungen This European Standard was approved by CEN on
{ April
t r s zä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Serbiaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
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CEN-CENELEC Management Centre:
Rue de la Science 23,
B-1040 Brussels
9
t r s z CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s x y y rã t r s z ESIST EN 16770:2018



EN 16770:2018 (E) 2 Contents Page European foreword . 4 Introduction . 5 1 Scope . 6 2 Normative references . 6 3 Terms, definitions, symbols and units . 7 3.1 Terms and definitions . 7 3.2 Symbols and units . 10 4 List of significant hazards . 10 5 Safety requirements and/or measures . 12 5.1 General . 12 5.2 Control systems . 12 5.2.1 Safety and reliability of control systems . 12 5.2.2 Emergency stop . 13 5.2.3 Fan start/stop . 13 5.3 Protection against mechanical hazards . 14 5.3.1 Shearing, crushing, drawing-in . 14 5.3.2 Pneumatics . 14 5.3.3 Stability . 14 5.4 Protection against fire . 14 5.4.1 Avoidance of effective ignition sources . 14 5.4.2 Avoidance of material accumulation in ducting . 15 5.4.3 Measures against fire spreading . 15 5.5 Noise . 16 5.5.1 Noise reduction at the design stage . 16 5.5.2 Noise emission measurement . 17 5.6 Protection against hazardous substances . 17 5.6.1 Dust emissions . 17 5.6.2 Performance requirements . 17 5.6.3 Performance indication . 18 5.7 Protection against electrical hazards . 18 5.8 Ergonomics . 19 5.9 Isolation . 19 6 Information for use . 19 6.1 General . 19 6.2 Marking . 19 6.3 Instruction handbook . 20 6.3.1 General . 20 6.3.2 Information related to installation . 21 6.3.3 Information related to operation . 21 6.3.4 Information related to maintenance . 22 6.3.5 Noise declaration . 22 Annex A (normative)
Types of dust extractors . 24 Annex B (normative)
Active ignition source detection and suppression system . 26 SIST EN 16770:2018



EN 16770:2018 (E) 3 Annex C (normative)
Fire suppression system . 28 Annex D (informative)
Noise reduction at the design stage . 29 D.1 General . 29 D.2 Noise sources . 29 D.3 Measures to reduce noise . 29 D.4 Impacts from chips and dust . 30 Annex E (normative)
Measurement of vacuum, cleaning interval and residual dust content . 31 Annex F (informative)
Interface to woodworking machinery . 32 Annex ZA (informative)
Relationship between this European Standard and the essential requirements of Directive 2006/42/EC aimed to be covered . 33 Bibliography . 36
SIST EN 16770:2018



EN 16770:2018 (E) 4 European foreword This document (EN 16770:2018) has been prepared by Technical Committee CEN/TC 142 “Woodworking machines - Safety”, the secretariat of which is held by UNI. 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 March 2019, and conflicting national standards shall be withdrawn at the latest by March 2019. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. 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 EU Directive 2006/42/EC. For relationship with EU Directive 2006/42/EC, see informative Annex ZA, which is an integral part of this document. The European Standards produced by CEN/TC 142 are particular to woodworking machines and compliment the relevant “A” and “B” standards on the subject of general safety (see Introduction of EN ISO 12100:2010 for a description of A, B and C standards). NOTE Extraction systems that are considered in this standard are not intended to be installed in areas where the presence of potentially explosive atmosphere needs to be taken into account. EN 1127-1 shows general procedures for design and construction of equipment, protection systems and components in relation to explosion protection. According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 16770:2018



EN 16770:2018 (E) 5 Introduction This European Standard has been prepared to be a harmonized standard to provide one means of conforming to the Essential Health and Safety Requirements of the Machinery Directive and associated EFTA Regulations. This document is a type “C” standard as defined in EN ISO 12100:2010. This document is of relevance, in particular, for the following stakeholder groups representing the market players with regard to machinery safety: —
machine manufacturers (small, medium and large enterprises); —
health and safety bodies (regulators, accident prevention organizations, market surveillance, etc.). 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 other standards, for machines that have been designed and built in accordance with the provisions of this type C standard. The requirements of this document are directed to manufacturers and their authorized representatives of chip and dust extraction systems. This document also includes information to be provided by the manufacturer to the user. SIST EN 16770:2018



EN 16770:2018 (E) 6 1 Scope This document deals with all significant hazards, hazardous situations and events as listed in Clause 4, relevant for chip and dust extraction systems for indoor use designated to be connected to woodworking machines, when they are used as intended and under the conditions foreseen by the manufacturer, including reasonably foreseeable misuse. This document does not apply to: a) extraction systems with a nominal volume flow rate above 8 000 m3 h « s and/or a volume of the dust loaded part of the dust extractor above 3,5 m3; b) vacuum cleaners according to EN 60335-2-69; c) extraction systems with fans installed in the dust loaded part; d) extraction equipment (e.g. extraction hoods, ducts) within a woodworking machine, i.e. up to and including the outlet to which the extraction system is connected; e) extraction systems designed for dust with KST values above 200 bar ms « s, minimum ignition energy below 10 mJ and/or lower explosion level below 30 g m « u; f) extraction systems designed for aspiration of explosive atmospheres, e.g. dust load > 50 % lower explosion level; g) systems designed for extraction of machines with a higher risk of causing ignition sources. This document is not applicable to machines which are manufactured before the date of its publication as a European Standard. 2 Normative references The following documents are referred to in the text in such a way that some or all of their content constitutes requirements 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 1037:1995+A1:2008, Safety of machinery — Prevention of unexpected start-up EN 1093-6, Safety of machinery — Evaluation of the emission of airborne hazardous substances — Part 6: Separation efficiency by mass, unducted outlet EN 1093-7, Safety of machinery — Evaluation of the emission of airborne hazardous substances — Part 7: Separation efficiency by mass, ducted outlet EN 1127-1, Explosive atmospheres — Explosion prevention and protection — Part 1: Basic concepts and methodology EN 12779:2015, Safety of woodworking machines — Chip and dust extraction systems with fixed installation — Safety requirements EN 14460:2006, Explosion resistant equipment EN 14491:2012, Dust explosion venting protective systems SIST EN 16770:2018



EN 16770:2018 (E) 7 EN 50525-2-21, Electric cables — Low voltage energy cables of rated voltages up to and including 450/750 V (Uo/U) — Part 2-21: Cables for general applications — Flexible cables with crosslinked elastomeric insulation EN 60204-1:2006, Safety of machinery — Electrical equipment of machines — Part 1: General requirements (IEC 60204-1:2005, modified)1 EN 60529, Degrees of protection provided by enclosures (IP Code) (IEC 60529)2 EN ISO 4414, Pneumatic fluid power — General rules and safety requirements for systems and their components (ISO 4414) EN ISO 4871, Acoustics — Declaration and verification of noise emission values of machinery and equipment (ISO 4871) EN ISO 11201:2010, Acoustics — Noise emitted by machinery and equipment — Determination of emission sound pressure levels at a work station and at other specified positions in an essentially free field over a reflecting plane with negligible environmental corrections (ISO 11201:2010) EN ISO 12100:2010, Safety of machinery — General principles for design — Risk assessment and risk reduction (ISO 12100:2010) 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) EN ISO 13849-1, Safety of machinery — Safety-related parts of control systems — Part 1: General principles for design (ISO 13849-1) EN ISO 13850, Safety of machinery — Emergency stop function — Principles for design (ISO 13850) EN ISO 14119, Safety of machinery — Interlocking devices associated with guards — Principles for design and selection (ISO 14119) EN ISO 19085-1:2017, Woodworking machines — Safety — Part 1: Common requirements (ISO 19085-1:2017) EN ISO 80079-36, Explosive atmospheres — Part 36: Non-electrical equipment for explosive atmospheres — Basic method and requirements (ISO 80079-36) ISO 2602, Statistical interpretation of test results — Estimation of the mean — Confidence interval 3 Terms, definitions, symbols and units 3.1 Terms and definitions For the purposes of this document, the terms and definitions given in EN ISO 12100:2010, EN ISO 19085-1:2017, EN 12779:2015 and the following apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses:
1 This document is impacted by the stand-alone amendment EN 60204-1:2006/A1:2009. 2 This latest edition of document is impacted by the stand-alone amendments EN 60529:1991/A1:2000 and EN 60529:1991/A2:2013. SIST EN 16770:2018



EN 16770:2018 (E) 8 — IEC Electropedia: available at http://www.electropedia.org/ — ISO Online browsing platform: available at http://www.iso.org/obp 3.1.1 chip and dust extraction system system consisting of ducting and dust extractor used for extraction, conveyance, separation and temporary storage of chips and dust from woodworking 3.1.2 dust extractor device for extraction and separation of chips and dust deriving from woodworking Note 1 to entry: See Annex A for types of dust extractors and see Annex F for interface to woodworking machinery. 3.1.3 indoor use operation inside the workshop with recirculation air 3.1.4 chips particles with a particle size > 0,5 mm 3.1.5 dust
´woodworking µ particles with a particle size
¶ 0,5 mm 3.1.6 shaving chip with a typical length of above 15 mm and a low thickness compared to other dimensions 3.1.7 extraction ducting all parts of the ducting between the extraction points and the dust extractor consisting of main and branch and machine connection ducts, gate valves and fire gates 3.1.8 main duct duct to the dust extractor to which branch ducts or connection ducts are connected 3.1.9 fan component within the dust extractor which produces the volume flow rate necessary for extracting chips and dust from the woodworking machines 3.1.10 filter element part of the dust extractor for the removal of chips and dust from the air SIST EN 16770:2018



EN 16770:2018 (E) 9 3.1.11 bin movable equipment for accumulation of chips and dust 3.1.12 crude air part dust loaded interior of the extraction system including separator, bin, discharge system from the duct inlet connected to the filter element surface, where the air filtration is performed Note 1 to entry: See also EN 14491:2012 for the consideration of the dust loaded part of the filter section. 3.1.13 clean air part interior of the dust extractor from the filter medium surface, where the air filtration is performed, to the air outlet 3.1.14 cleaning device device for reducing the dust layer on filter elements Note 1 to entry: The cleaning can be obtained, e.g. by vibration, reversed airflow or compressed-air blast. 3.1.15 extraction vacuum static vacuum in a duct connecting point 3.1.16 air velocity average velocity of the air inside a duct, calculated over the entire cross section and which allows the determination of the volume flow rate 3.1.17 nominal volume flow rate volume flow rate resulting from an average air velocity of 20 ms «1 at the inlet of the dust extractor 3.1.18 recirculation air filtered air reintroduced into the working area 3.1.19 usable volume of bin maximum volume of the bin that can be used for chips and dust storage without overfill or malfunction of the device 3.1.20 active ignition source detection and suppression system system that avoids the entry of active ignition sources into the dust loaded part of the dust extractor 3.1.21 dischargeable material material with an electrical resistance < 109
À 3.1.22 stationary dust extractor dust extractor designed to be installed on a floor or secured to a fixed structure SIST EN 16770:2018



EN 16770:2018 (E) 10 3.1.23 displaceable dust extractor dust extractor stationary during use and equipped with a device, e.g. wheels, which allows it to be moved between locations 3.2 Symbols and units For the purposes of this document, the following symbols and units apply. Table 1 — Symbols and units Parameter Symbol Unit Distance l m Volume V m3 Air velocity v ms «1 Volume flow rate q m3h «1 Pressure p Pa Pressure difference
Pa Temperature T °C KST value KST bar ms «1 Material load
g m «3 Minimum ignition energy MIE mJ Minimum ignition temperature MIT °C Lower explosion level LEL g m «3 Dust content
mg m-3 Capacity C pF Current l A Sound pressure level LpA dB(A) 4 List of significant hazards This clause contains all significant hazards, hazardous situations and events (see EN ISO 12100:2010), identified by risk assessment as significant for the machines as defined in the scope and which require action to eliminate or reduce the risk. This document deals with these significant hazards by defining safety requirements and/or measures or by reference to relevant standards. These hazards are listed in Table 2 in accordance with EN ISO 12100:2010, Annex B. If gaseous pollutants occur at the working area, they will be partly removed from the working area by the extraction system for wood dust and chips. However, the gaseous pollutants are not separated by the extraction system for dust and chips. The explosion risk on dust extractors covered by this standard is reduced to a fast combustion only due to the following design properties: — there is just a limited crude air volume compared to the total volume of the dust extractor; — the geometry of the crude air volume hinders the combustion process; — the ratio between surface and volume of the crude air part deflates the combustion process. SIST EN 16770:2018



EN 16770:2018 (E) 11 An assessment on ignition hazards according to EN ISO 80079-36 is required for the crude air part of the dust extractor. Table 2 — List of significant hazards No Type or group Examples of hazards Specific
requirements Applicable clauses of this standard Subclause of EN ISO 12100:2010 Origin a Potential consequences b
1 Mechanical hazards — instability; — moving parts; — rotating parts; — stored energy; — crushing; — drawing-in or trapping; — entanglement; — shearing; 5.3.1 5.3.3 6.2.3 a) 6.2.6 6.2.10 6.3.5.2 6.3.5.4 2 Electrical hazards — electrostatic phenomena; — parts which have become live under fault conditions; — electrocution; — fire; — (electric) shock; 5.7 6.2.9 6.3.3.2 6.3.5.4 6.4.4 6.4.5 3 Thermal hazards — explosion; — flame; — objects or materials with a high temperature; — burn; — fire spreading; 5.4 6.2.4 b) 6.2.8 c) 4 Noise hazards — exhausting system; — scraping surfaces; — unbalanced rotating parts; — whistling pneumatics; — discomfort; — permanent hearing loss; — stress; — tinnitus; — tiredness; — accidents due to interference with speech communication and acoustic signals; 5.5 6.2.3 c) 6.2.8 c) 6.3.1 6.3.4.2 6.4.3 6.4.5.1 b) and c) SIST EN 16770:2018



EN 16770:2018 (E) 12 No Type or group Examples of hazards Specific
requirements Applicable clauses of this standard Subclause of EN ISO 12100:2010 Origin a Potential consequences b
7 Material/ substance hazards — biological and microbiological (viral or bacterial) agent; — dust; — flammable materials; — breathing difficulties, suffocation; — cancer; — explosion; — fire; — fire spreading; — poisoning; — sensitization; 5.4 5.6 6.2.3 b) 6.2.3 c) 6.2.4 a) 6.3.4.4 6.4.5.1 c) 6.4.5.1 g) 8 Ergonomics — effort; — posture. — discomfort; — musculoskeletal disorder. 5.8 6.2.7 6.2.8 6.2.11.8 a A single origin of a hazard can have several potential consequences. b For each type of hazard or group of hazards, some potential consequences can be related to several origins of hazard. 5 Safety requirements and/or measures 5.1 General The chip and dust extraction system shall comply with the safety requirements and/or protective measures of this clause. In addition, the system shall be designed in accordance with the principles of EN ISO 12100:2010 for hazards relevant but not significant, and which are not dealt with in this document (e.g. sharp edges). For guidance in connection with risk reduction by design, see EN ISO 12100:2010, 6.2 and for safeguarding measures, see EN ISO 12100:2010, 6.3. 5.2 Control systems 5.2.1 Safety and reliability of control systems Control systems shall be designed in compliance with the principles of EN ISO 13849-1. The following safety-relevant functions shall correspond to a minimum performance level (PL) according to EN ISO 13849-1: — emergency stop PL c (see 5.2.2); — mode selection PL b (see 5.2.3); — interlocking of movable guards with hazardous moving parts PL c (see 5.3.1); — interlocking of fire suppression system with: SIST EN 16770:2018



EN 16770:2018 (E) 13 activation of fire suppression PL c; stop of the fan PL c; stop of the filter cleaning device PL c; stop of the discharge system PL c (see 5.4.3); — interlocking of fan and cleaning device within the dust extractor PL c (see 5.4.3); — performance indication PL b (see 5.6.3); — interlocking of water pressure of the active ignition source detection and suppression system with: cleaning device PL c (see Annex B); fan PL c (see Annex B); — interlocking of power supply of the active ignition source detection and suppression system with: cleaning device PL c (see Annex B); fan PL c (see Annex B); — interlocking of any other internal failure of the active ignition source detection and suppression system with: cleaning device PL c (see Annex B); fan PL c (see Annex B). Verification: By checking the relevant calculations, drawings and the data of the components used. 5.2.2 Emergency stop An emergency stop is required for dust extractors with automatic cleaning device and shall meet the requirements of EN 60204-1:2006 and EN 60204-1:2006/A1:2009, 9.2.5.4 and 10.7 and EN ISO 13850, and shall be placed on the control panel where the electrical controls are situated. A yellow/red main switch may be used for this purpose. Verification: By visual inspection, checking the relevant documents and functional testing. 5.2.3 Fan start/stop For dust extractors a fan start/stop switch is required. For dust extractors with a remote start/stop, a selector hand/automatic together with a main switch is sufficient. Dust extractors with a remote start/stop and a selector hand/automatic (without stop-position) shall be equipped in all cases with a main switch according to EN 60204-1:2006 and EN 60204-1:2006/A1:2009, 5.3.2 a) to d). NOTE The following combinations are possible: — start / stop switch and connection through power plug (without automatic cleaning device); — manual / zero / automatic switch and connection through power plug (separate emergency stop switch in case of automatic cleaning device); — start / stop switch and a main switch mandatory (with emergency stop in case of automatic cleaning device); SIST EN 16770:2018



EN 16770:2018 (E) 14 — manual / automatic switch and a main switch mandatory (with emergency stop in case of automatic cleaning device). Verification: By visual inspection, checking the relevant documents and functional testing. 5.3 Protection against mechanical hazards 5.3.1 Shearing, crushing, drawing-in Hazards by shearing, crushing or drawing-in by movements of machine parts and equipment shall be prevented by design. Access to dangerous moving parts shall be prevented. This can be achieved by fitting fixed or interlocked movable guards or interlocked movable guards with guard locking. Hazardous moving parts shall stop before they ca
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