SIST EN 12779:2016
(Main)Safety of woodworking machines - Chip and dust extraction systems with fixed installation - Safety requirements
Safety of woodworking machines - Chip and dust extraction systems with fixed installation - Safety requirements
This European Standard deals with the significant hazards, hazardous situations and events relevant for chip and dust extraction systems (woodworking) with fixed installation as listed in clause 4, when they are used as intended and under the conditions foreseen by the manufacturer, including reasonably foreseeable misuse.
This European Standard deals also with the technical requirements to minimize the hazards in connection with the temporary storage of wood dust and chips in a silo including charging and discharge systems. This European standard does not apply to:
a) chip and dust extraction systems with filters installed indoors;
b) 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;
c) chip and dust extraction systems designed for KST values above 200 bar ms-1;
d) mechanical conveying systems between filter and storage facility.
This European Standard is not applicable to machines which are manufactured before the date of its publication as EN.
Sicherheit von Holzbearbeitungsmaschinen - Ortsfeste Absauganlagen für Holzstaub und Späne - Sicherheitstechnische Anforderungen
Diese Europäische Norm behandelt die signifikanten Gefährdungen, Gefährdungssituationen und Gefährdungsereignisse für ortsfeste Absauganlagen für Holzstaub und Späne und für deren Verbindung mit Maschinen zur Bearbeitung von Massivholz (einschließlich Hartholz), Holzwerkstoffen und holzähnlichen Werkstoffen, wenn sie bestimmungsgemäß und entsprechend den durch den Hersteller vorhersehbaren Bedingungen verwendet werden, einschließlich vernünftigerweise vorhersehbarem Missbrauch.
Diese Europäische Norm behandelt auch die technischen Anforderungen, um die Gefahren im Zusammenhang mit der zeitweiligen Lagerung von Holzstaub, Spänen und Hackschnitzeln in einem Silo, Sammelbehälter oder Container einschließlich Beschickungs- und Austragssystem auf ein Mindestmaß zu reduzieren.
Diese Europäische Norm gilt nicht für:
a) Absauganlagen für Holzstaub und Späne mit innen aufgestellten Filtern (durch prEN 16770 abgedeckt);
b) Absaugausrüstungen (z. B. Absaughauben, Rohrleitungen) innerhalb einer Holzbearbeitungsmaschine, einschließlich des Absaugstutzens, an den die Absauganlage angeschlossen wird;
c) Absauganlagen für Holzstaub und Späne konstruiert für KST-Werte oberhalb 200 bar ms 1;
d) mechanische Transportsysteme zwischen Filtereinheit und Lagereinrichtung;
e) Absaugsysteme und Transportsysteme mit Unterdruck unterhalb von 0,3 bar oder Überdruck oberhalb von 0,3 bar;
f) Lagereinrichtungen für gepresste Holzprodukte (z. B. Pellets) und feuchte Hackschnitzel.
Anforderungen für Container werden nicht in dieser Norm behandelt.
Diese Europäische Norm gilt nicht für Maschinen, die vor Veröffentlichung als Europäische Norm hergestellt wurden.
Sécurité des machines pour le travail du bois - Installations fixes d'extraction de copeaux et de poussières - Prescriptions de sécurité
La présente Norme européenne traite des phénomènes dangereux, situations et événements dangereux significatifs applicables aux systèmes d'extraction des copeaux et poussières pour les installations fixes et pour les raccordements aux machines pour le travail du bois massif (y compris de bois dur), des matériaux à base de bois et des matériaux similaires au bois, lorsqu’ils sont utilisés normalement et dans les conditions prévues par le fabricant, incluant une mauvaise utilisation raisonnablement prévisible.
La présente Norme européenne traite également des prescriptions techniques pour réduire les phénomènes dangereux liés au stockage temporaire des poussières de bois, des copeaux et des plaquettes dans un silo, un bac de réception ou un conteneur y compris les systèmes de chargement et de déchargement.
La présente norme européenne ne s’applique pas aux :
a) systèmes d’extraction des copeaux et poussières avec des filtres installés à l'intérieur (couverts par le prEN 16770) ;
b) équipements d'extraction (par exemple, buses d'extraction, conduits) situés dans une machine à bois, y compris la sortie à laquelle le système d'extraction est raccordé ;
c) systèmes d’extraction des copeaux et poussières conçus pour des indices KST supérieures à 200 bar ms1 ;
d) systèmes de convoyage mécanique situés entre le filtre et l'installation de stockage ;
e) systèmes d’extraction et systèmes de convoyage avec une dépression inférieure à 0,3 bar, ou une surpression supérieure à 0,3 bar ;
f) dispositifs de stockage pour les produits en bois agglomérés (par exemple, granulés) et les plaquettes humides.
Les prescriptions relatives aux conteneurs ne sont pas traitées dans la présente norme.
La présente Norme européenne n’est pas applicable aux machines qui ont été fabriquées avant sa date de publication comme EN.
Varnost lesnoobdelovalnih strojev - Nepremični odsesovalni sistemi za lesne odrezke in prah - Varnostne zahteve
Ta evropski standard opisuje večja tveganja, nevarne razmere in dogodke za nepremične odsesovalne (lesnoobdelovalne) sisteme za lesne odrezke in prah iz točke 4, kadar se uporabljajo v skladu z njihovim namenom in pod pogoji, ki jih predvideva proizvajalec, vključno s pogoji pričakovane nepravilne uporabe.
Ta evropski standard opisuje tudi tehnične zahteve za zmanjšanje tveganj v povezavi z začasnim skladiščenjem lesnega prahu in odrezkov v silosu, vključno s sistemi za polnjenje in praznjenje. Ta evropski standard se ne uporablja za:
a) odsesovalne sisteme za odrezke in prah z notranje nameščenimi filtri;
b) odsesovalno opremo (npr. odsesovalni pokrovi, vodi) v notranjosti lesnoobdelovalnega stroja, tj. do in vključno z odvodom, na katerega je priključen odsesovalni sistem;
c) odsesovalne sisteme za odrezke in prah, zasnovane za vrednosti KST, večje od 200 bar ms-1;
d) mehanske transportne sisteme med filtrom in skladiščnim prostorom.
Ta evropski standard se ne uporablja za stroje, ki so bili proizvedeni pred objavo tega dokumenta kot standarda EN.
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Sicherheit von Holzbearbeitungsmaschinen - Ortsfeste Absauganlagen für Holzstaub und Späne - Sicherheitstechnische AnforderungenSécurité des machines pour le travail du bois - Installations fixes d'extraction de copeaux et de poussières - Prescriptions de sécuritéSafety of woodworking machines - Chip and dust extraction systems with fixed installation - Safety requirements79.120.10Lesnoobdelovalni strojiWoodworking machinesICS:Ta slovenski standard je istoveten z:EN 12779:2015SIST EN 12779:2016en,fr,de01-februar-2016SIST EN 12779:2016SLOVENSKI
STANDARDSIST EN 12779:2005+A1:20091DGRPHãþD
SIST EN 12779:2016
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12779
November
t r s w ICS
y {ä s t rä s r Supersedes EN
s t y y {ã t r r v ªA sã t r r {English Version
Safety of woodworking machines æ Chip and dust extraction systems with fixed installation æ Safety requirements Sécurité des machines pour le travail du bois æ Installations fixes d 5extraction de copeaux et de poussières æ Prescriptions de sécurité
Sicherheit von Holzbearbeitungsmaschinen æ Ortsfeste Absauganlagen für Holzstaub und Späne æ Sicherheitstechnische Anforderungen This European Standard was approved by CEN on
t x September
t r s wä
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 Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey and United Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels
9
t r s w CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s t y y {ã t r s w ESIST EN 12779:2016
EN 12779:2015 (E) 2 Contents Page European foreword . 4 Introduction . 6 1 Scope . 7 2 Normative references . 7 3 Terms, definitions, terminology, symbols and units . 9 3.1 Terms and definitions . 9 3.2 Terminology . 12 3.3 Symbols and units . 12 4 List of significant hazards . 12 5 Safety requirements and/or measures . 14 5.1 General . 14 5.2 Control systems . 14 5.2.1 Safety and reliability of control systems . 14 5.2.2 Emergency stop . 14 5.2.3 Failure of the power supply . 15 5.3 Protection against mechanical hazards . 15 5.3.1 Stability of structural parts . 15 5.3.2 Shearing, crushing, drawing-in . 15 5.3.3 Access to machinery . 16 5.3.4 Pneumatics . 16 5.4 Protection against fire and explosion . 16 5.4.1 Hazards of fire and explosion . 16 5.4.2 Fire protection and prevention . 18 5.4.3 Explosion . 19 5.5 Protection against noise . 25 5.6 Protection against hazardous substances . 25 5.6.1 Dust emissions . 25 5.6.2 Performance requirements . 26 5.6.3 Performance indication . 27 5.6.4 Reintroduction of dust . 27 5.7 Protection against electrical hazards . 28 5.8 Additional requirements for silos . 28 5.8.1 Requirements for design and construction . 28 5.8.2 Discharge system . 29 5.8.3 Openings for silos . 29 6 Information for use . 31 6.1 General . 31 6.2 Marking . 31 6.3 Instruction handbook . 32 6.3.1 General . 32 6.3.2 Information related to installation . 33 6.3.3 Information related to operation . 33 6.3.4 Information related to maintenance . 34 6.3.5 Information related to silos. 34 SIST EN 12779:2016
EN 12779:2015 (E) 3 6.3.6 Fire fighting. 35 6.3.7 Noise declaration . 35 Annex A (informative)
Examples of extraction systems . 37 A.1 Explanation to figures . 37 A.2 Interface to woodworking machinery. 43 Annex B (informative)
Table with corresponding terms in English, French and German . 44 Annex C (informative)
Classification of places where explosive atmospheres may occur (according to Directive 1999/92/EC) . 48 Annex D (informative)
Noise reduction at the design stage . 50 D.1 Noise sources . 50 D.2 Measures to reduce noise . 50 D.3 Impact from chips and dust . 51 Annex E (normative)
Silos with a cross section up to 45 m2 . 52 Annex F (informative)
Measurement of residual dust content . 54 Annex ZA (informative)
Relationship between this European Standard and the Essential Requirements of EU Directive 2006/42/EC . 55 Bibliography . 58
SIST EN 12779:2016
EN 12779:2015 (E) 4 European foreword This document (EN 12779:2015) 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 May 2016, and conflicting national standards shall be withdrawn at the latest by May 2016. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 12779:2004+A1:2009. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports the basic requirements of EU Directive(s). For relationship with EU Directive(s), 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 as a whole are not intended to be installed in areas, where the presence of potentially explosive atmosphere needs to be taken into account. In relation to the previous version of the standard, the following main modifications have been made: — The scope has been adjusted to meet the fields of application of the standard; — The requirements for safety related controls have been modified for clarification; — The requirements for electrical equipment and installations have been modified for clarification; — The requirements for fire and explosion protection have been modified for clarification; — The requirements for noise protection have been modified for clarification; — The requirements for protection against hazardous substances have been modified for clarification; — The requirements for silos have been modified for clarification; — A new annex for examples of extraction systems have been added for clarification; — A new annex for the classification of places where explosive atmosphere may occur have been added for clarification. 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, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, SIST EN 12779:2016
EN 12779:2015 (E) 5 Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 12779:2016
EN 12779:2015 (E) 6 Introduction This 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.). Others can be affected by the level of machinery safety achieved with the means of the document by the above-mentioned stakeholder groups: —
machine users/employers (small, medium and large enterprises); —
machine users/employees (e. g. trade unions, organizations for people with special needs); —
service providers, e.g. for maintenance (small, medium and large enterprises); —
consumers (in case of machinery intended for use by consumers). The above-mentioned stakeholder groups have been given the possibility to participate at the drafting process of this document. The machinery concerned and the extent to which hazards, hazardous situations and events covered are indicated in the scope of this document. 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 12779:2016
EN 12779:2015 (E) 7 1 Scope This European Standard deals with the significant hazards, hazardous situations and events relevant for chip and dust extraction systems for fixed installation and for connection with machines for working on solid wood (including hard wood), wood-based materials and wood-like materials, when they are used as intended and under the conditions foreseen by the manufacturer, including reasonably foreseeable misuse. This European Standard deals also with the technical requirements to minimize the hazards in connection with the temporary storage of wood dust, chips and shavings in a silo, bin or container including charging and discharge systems. This European standard does not apply to: a) chip and dust extraction systems with filters installed indoors (covered by prEN 16770); b) extraction equipment (e.g. extraction hoods, ducts) within a woodworking machine including the outlet to which the extraction system is connected; c) chip and dust extraction systems designed for KST values above 200 bar ms «1; d) mechanical conveying systems between filter and storage facility; e) extraction systems and conveying systems with underpressure below 0,3 bar or overpressure above 0,3 bar; f) storage devices for pressed wood products (e.g. pellets) and humid shavings. Requirements for containers are not dealt with in this standard. This European Standard is not applicable to machines which are manufactured before the date of its publication as EN. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 617:2001+A1:2010, Continuous handling equipment and systems — Safety and EMC requirements for the equipment for the storage of bulk materials in silos, bunkers, bins and hoppers EN 953:1997+A1:2009, Safety of machinery — Guards — General requirements for the design and construction of fixed and movable guards EN 1093-7:1998+A1:2008, Safety of machinery — Evaluation of the emission of airborne hazardous substances — Part 7: Separation efficiency by mass, ducted outlet EN 1127-1:2011, Explosive atmospheres — Explosion prevention and protection — Part 1: Basic concepts and methodology EN 1366-1:2014, Fire resistance tests for service installations — Part 1: Ventilation ducts EN 1366-2:2015, Fire resistance tests for service installations — Part 2: Fire dampers SIST EN 12779:2016
EN 12779:2015 (E) 8 EN 1366-7:2004, Fire resistance tests for service installations — Part 7: Conveyor systems and their closures EN 1870-4:2012, Safety of woodworking machines — Circular sawing machines — Part 4: Multiblade rip sawing machines with manual loading and/or unloading EN 1991-4:2006, Eurocode 1 — Actions on structures — Part 4: Silos and tanks EN 12750:2013, Safety of woodworking machines — Four sided moulding machines EN 13463-1:2009, Non-electrical equipment for use in potentially explosive atmospheres — Part 1: Basic method and requirements EN 14373:2005, Explosion suppression systems EN 14460:2006, Explosion resistant equipment EN 14491:2012, Dust explosion venting protective systems EN 14797:2006, Explosion venting devices EN 14986:2007, Design of fans working in potentially explosive atmospheres EN 15089:2009, Explosion isolation systems EN 16009:2011, Flameless explosion venting devices EN 16020:2011, Explosion diverters EN 16447:2014, Explosion isolation flap valves EN 60079-14:2014, Explosive atmospheres — Part 14: Electrical installations design, selection and erection (IEC 60079-14:2013) EN 60204-1:2006,1) Safety of machinery — Electrical equipment of machines — Part 1: General requirements (IEC 60204-1:2005, modified) EN 60529:1991,2) Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989) EN 62305-1:2011, Protection against lightning — Part 1: General principles (IEC 62305-1:2010, modified) EN ISO 4414:2010, Pneumatic fluid power — General rules and safety requirements for systems and their components (ISO 4414:2010) EN ISO 12100:2010, Safety of machinery — General principles for design — Risk assessment and risk reduction (ISO 12100:2010) EN ISO 13849-1:2008, Safety of machinery — Safety-related parts of control systems — Part 1: General principles for design (ISO 13849-1:2006)
1)
This document is impacted by the stand-alone amendment EN 60204-1:2006/A1:2009. 2)
This document is impacted by the stand-alone amendments EN 60529:1991/A1:2000 and EN 60529:1991/A2:2013, and by the corrigendum EN 60529:1991/corrigendum May 1993. SIST EN 12779:2016
EN 12779:2015 (E) 9 EN ISO 13850:2008, Safety of machinery — Emergency stop — Principles for design (ISO 13850:2006) EN ISO 14119:2013, Safety of machinery — Interlocking devices associated with guards — Principles for design and selection (ISO 14119:2013) EN ISO 14122-2:2001,3) Safety of machinery — Permanent means of access to machinery — Part 2: Working platforms and walkways (ISO 14122-2:2001) EN ISO 14122-3:2001, 4) Safety of machinery — Permanent means of access to machinery — Part 3: Stairs, stepladders and guard-rails (ISO 14122-3:2001) EN ISO 14122-4:2004,5) Safety of machinery — Permanent means of access to machinery — Part 4: Fixed ladders (ISO 14122-4:2004) 3 Terms, definitions, terminology, symbols and units 3.1 Terms and definitions For the purposes of this document, the terms and definitions given in EN ISO 12100:2010 and the following apply. 3.1.1 chip and dust extraction system system used for extraction, conveyance, separation and temporary storage of chips and dust from woodworking Note 1 to entry: Examples of extraction systems are illustrated in Annex A. 3.1.2 fixed installation extraction system which is permanently located and installed 3.1.3 chip particles with a size > 0,5 mm 3.1.4 dust fine particles with a size
¶ 0,5 mm 3.1.5 shaving chip with a typical length of above 15 mm and a low thickness compared to other dimensions 3.1.6 extraction ducting all parts of the ducting between the extraction points and the filter consisting of main and branch and machine connection ducts, gate valves, fire gates and back pressure flap
3) This document is impacted by the stand-alone amendment EN ISO 14122-2:2001/A1:2010. 4) This document is impacted by the stand-alone amendment EN ISO 14122-3:2001/A1:2010. 5) This document is impacted by the stand-alone amendment EN ISO 14122-4:2004/A1:2010. SIST EN 12779:2016
EN 12779:2015 (E) 10 Note 1 to entry: Back pressure flaps can also be a part of the filter. 3.1.7 main duct duct to the filter to which branch ducts or connection ducts are connected 3.1.8 separator device for separation of chips and dust from the conveying air Note 1 to entry: Filters and cyclones are examples of separators. 3.1.9 silo fixed installed closed structure for temporary storage of chips and dust, part of a continuous handling system, with a filling height of at least 1,5 m Note 1 to entry: Silo is usually charged from the top and discharged from the bottom or the side. Note 2 to entry: See also Figures A.1 and A.2 in Annex A. 3.1.10 supporting fan additional fan to compensate a high pressure loss 3.1.11 bin movable equipment with a volume up to 1,0 m3 for temporary storage of chips and dust 3.1.12 container movable equipment with a volume over 1,0 m3 for temporary storage of chips and dust 3.1.13 discharge system system which continually or intermittently removes chips and dust from separators or silos 3.1.14 conveying system system to convey chips and dust from one or more separators to other parts of the extraction system or into silo(s) 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 or measured over the entire cross section 3.1.17 concurrency factor ratio in percent between the nominal volume flow rate of the extraction system and the total volume flow rate of all machines connected SIST EN 12779:2016
EN 12779:2015 (E) 11 3.1.18 crude air part dust loaded interior of the extraction system including ducting, silo, container, bin, separator etc. from the duct inlet connected to the filter element surface, where the air filtration is performed 3.1.19 clean air part interior of the extraction system from the filter element surface, where the air filtration is performed, to the air outlet 3.1.20 recirculation air filtered air reintroduced into the working area 3.1.21 recirculation air duct duct through which filtered air is reintroduced to the working area 3.1.22 exhaust air airflow discharged to the atmosphere [SOURCE: EN 13779:2007, 6.1, Table 2, number 7] 3.1.23 filter device for the removal of particulate contaminants from the air, consisting of filter housing, inlets and outlets, filter element and cleaning device [SOURCE: EN 12792:2003, Clause 3, Table 1, n° 168, reference modified – device for removing particulate material from a fluid or gas] 3.1.24 filter element part of the filter for the removal of chips and dust from the air 3.1.25 cleaning device device for the reduction of a dust layer on filter elements Note 1 to entry: The cleaning can be obtained e.g. by vibration, reversed airflow or compressed-air blast. 3.1.26 back pressure flap flap valve kept open by airflow in normal operation, closed by interruption or reversed airflow 3.1.27 wood based material material with similar physical characteristics to wood Note 1 to entry: This includes MDF (Medium Density Fibreboard), OSB ((Oriented Strand Board), plywood, chipboard, fibreboard, and also these materials when they are covered with plastic or light alloy laminates and or edges. SIST EN 12779:2016
EN 12779:2015 (E) 12 3.2 Terminology List of corresponding terms in English, French and German is included in Annex B. 3.3 Symbols and units Following symbols and units are used in this document: Table 1 — Symbols and units Parameter Symbol Unit Diameter d mm Height h m Length l m Width w m Volume V m3 Air velocity v ms «1 Volume flow rate q m3h «1 Pressure p Pa Pressure difference
Pa Maximum explosion overpressure Pmax bar Reduced maximum explosion overpressure Predmax bar Material flow rate qm kg/h KST value KST bar ms «1 Minimum ignition energy MIE mJ Minimum ignition temperature MIT °C Lower explosion level LEL g m «3 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 extraction systems as defined in the scope and which require action to eliminate or reduce the risk. This European Standard 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. But the gaseous pollutants are not separated by the extraction system for dust and chips. SIST EN 12779:2016
EN 12779:2015 (E) 13 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 Origina Potential consequencesb
1 Mechanical hazards — height from the ground; — instability; — moving parts; — rotating parts; — rough, slippery surface; — stored energy; — explosion venting (ejection of parts); — gravity (bridges of dust and chips); — crushing; — drawing-in or trapping; — entanglement; — shearing; — slipping, tripping and falling; — impact; — sinking into wood dust and chips; — being buried under wood dust and chips; 5.3. ff 5.8 ff 5.2.1 5.2.2 5.2.3 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 ff 5.2.3 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; — pressure shockwave 5.4 ff 5.2.1 5.2.3 6.2.4 b) 6.2.8 c) 4 Noise hazards — exhausting system; — scraping surfaces; — unbalanced rotating parts; — whistling pneumatics; — compressed air; — discomfort; — permanent hearing loss; — stress; — tinnitus; — tiredness; 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) 7 Material/ substance hazards — biological and microbiological (viral or bacterial) agent; — dust; — flammable materials; — breathing difficulties, suffocation; — cancer; — explosion; — fire; — fire spreading; — poisoning; — sensitization. 5.6 ff 5.2.1 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 Ergonomic hazards — access; — visibility; — stress; — any other (for example, mechanical, electrical) as a consequence of a human error; 5.3.3 5.8.1 5.8.2 5.8.3 6.2.7 6.2.8 6.2.11.8 SIST EN 12779:2016
EN 12779:2015 (E) 14 No Type or group Examples of hazards Specific
Requirements Applicable clauses of this standard Subclause of EN ISO 12100:2010 Origina Potential conseq
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