SIST EN 12013:2018
(Main)Plastics and rubber machines - Internal mixers - Safety requirements
Plastics and rubber machines - Internal mixers - Safety requirements
This European Standard deals with all significant hazards, hazardous situations or hazardous events relevant to the design and construction of internal mixers for production and laboratory applications, when the machines are used as intended and under the conditions of misuse which are reasonably foreseeable by the manufacturer (see Annex A).
An internal mixer begins at the feed openings and ends at the discharge opening.
Internal mixers usually do not produce explosive atmospheres. Where materials are processed, which may cause an explosive atmosphere, the Directive 94/9/EC on the Equipment and protective systems intended for use in potentially explosive atmospheres (ATEX) should be applied. Explosion hazards are not dealt with in this document.
The safety requirements for the design of exhaust systems and of ancillary equipment are not covered. The safety requirements for the interaction between internal mixers and ancillary equipment are covered.
This European Standard is not applicable to internal mixers manufactured before the date of its publication.
Kunststoff- und Gummimaschinen - Innenmischer - Sicherheitsanforderungen
Diese Europäische Norm behandelt alle signifikanten Gefährdungen, Gefährdungssituationen und Gefähr¬dungsereignisse, die für die Konstruktion und den Bau von Innenmischern für Produktions und Labor Anwendungen relevant sind, wenn die Maschinen bestimmungsgemäß und unter Bedingungen, die vernünftigerweise vom Hersteller vorhersehbar sind, verwendet werden (siehe Anhang A).
Ein Innenmischer beginnt an den Einfüllöffnungen und endet an der Entleerungsöffnung.
Innenmischer bilden in der Regel keine explosionsfähigen Atmosphären. Werden Materialien verarbeitet, die eine explosionsfähige Atmosphäre verursachen können, sollte die Richtlinie 94/9/EG über Geräte und Schutz¬systeme zur Verwendung in explosionsgefährdeten Bereichen (ATEX) angewendet werden. Gefährdungen durch Explosion werden in diesem Dokument nicht behandelt.
Die Sicherheitsanforderungen an die Konstruktion von Absaugsystemen und von Zusatzeinrichtungen werden nicht behandelt. Die Sicherheitsanforderungen an das Zusammenwirken zwischen Innenmischer und Zusatzeinrichtungen werden behandelt.
Diese Europäische Norm gilt nicht für Innenmischer, die vor dem Datum ihrer Veröffentlichung hergestellt wurden.
Machines pour les matières plastiques et le caoutchouc - Mélangeurs internes - Prescritions de sécurité
La présente Norme européenne traite de tous les phénomènes dangereux, situations et événements dangereux significatifs pertinents pour la conception et la fabrication des mélangeurs internes au cours de toutes les phases du cycle de vie des machines (voir l'EN ISO 12100:2010, 5.4), quels que soient leurs dimensions et les modes de commande de la porte de chargement et de la porte de déchargement, pour des applications de production et de laboratoire, lorsque ces machines sont utilisées normalement et en cas de mauvais usage raisonnablement prévisible par le fabricant (voir Annexe A).
Un mélangeur interne pour la production et un mélangeur tandem à chargement manuel commencent à la porte de chargement et se terminent au bord inférieur de l'ouverture de déchargement des matériaux.
Un mélangeur interne pour la production et un mélangeur tandem à chargement automatique commencent au convoyeur, qui est une partie intégrale de la machine, et se terminent au bord inférieur de l'ouverture de déchargement des matériaux.
Un mélangeur interne de laboratoire commence à la porte de chargement et se termine au conteneur de matériaux, qui est une partie intégrale du mélangeur.
En ce qui concerne le mesurage et la déclaration des émissions de bruit, seuls les mélangeurs de laboratoire sont couverts.
Le présent document ne traite pas des risques d'explosion.
NOTE En général les mélangeurs internes ne génèrent pas d'atmosphères explosibles. Lorsque les matériaux travaillés peuvent engendrer une atmosphère explosible, la directive 2014/34/UE pour les appareils et les systèmes de protection destinés à être utilisés en atmosphères explosibles (ATEX) peut-être appliquée.
Les systèmes d'aspiration ne sont pas couverts.
La présente Norme européenne ne s'applique pas aux mélangeurs internes fabriqués avant sa date de publication comme Norme européenne.
Stroji za predelavo gume in plastike - Notranji mešalniki - Varnostne zahteve
Ta evropski standard opisuje vsa večja tveganja, nevarne situacije ali nevarne dogodke v zvezi z načrtovanjem in izdelavo notranjih mešalnikov za uporabo v proizvodnji in laboratorijih, kadar se uporabljajo v skladu z svojim namenom in pod pogoji pričakovane nepravilne uporabe, ki jih določi proizvajalec (glej dodatek A).
Notranji mešalnik sega od odprtin za polnjenje do odprtine za izmet.
Notranji mešalniki običajno ne proizvajajo eksplozivnih atmosfer. Če se obdelujejo materiali, ki lahko ustvarijo eksplozivno atmosfero, je treba uporabiti Direktivo 94/9/ES v zvezi z opremo in zaščitnimi sistemi, namenjenimi za uporabo v potencialno eksplozivnih atmosferah (ATEX). Ta dokument ne zajema nevarnosti eksplozije.
Varnostne zahteve za načrtovanje izpušnih sistemov in pomožne opreme niso zajete. Varnostne zahteve za interakcijo med notranjimi mešalniki in pomožno opremo so zajete.
Ta evropski standard se ne uporablja za notranje mešalnike, izdelane pred objavo tega standarda.
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Stroji za predelavo gume in plastike - Notranji mešalniki - Varnostne zahteveKunststoff- und Gummimaschinen - Innenmischer - SicherheitsanforderungenMachines pour les matières plastiques et le caoutchouc - Mélangeurs internes - Prescritions de sécuritéPlastics and rubber machines - Internal mixers - Safety requirements83.200Oprema za gumarsko industrijo in industrijo polimernih materialovEquipment for the rubber and plastics industriesICS:Ta slovenski standard je istoveten z:EN 12013:2018SIST EN 12013:2018en,de01-junij-2018SIST EN 12013:2018SLOVENSKI
STANDARDSIST EN 12013:2000+A1:20081DGRPHãþD
SIST EN 12013:2018
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 12013
January
t r s z ICS
z uä t r r Supersedes EN
s t r s uã t r r r ªA sã t r r zEnglish Version
Plastics and rubber machines æ Internal mixers æ Safety requirements Machines pour les matières plastiques et le caoutchouc æ Mélangeurs internes æ Prescritions de sécurité
Kunststoffæ und Gummimaschinen æ Innenmischer æ Sicherheitsanforderungen This European Standard was approved by CEN on
z September
t r s yä
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
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
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 t r s uã t r s z ESIST EN 12013:2018
EN 12013:2018 (E) 2 Contents
Page European foreword . 4 Introduction . 5 1 Scope . 6 2 Normative references . 6 3 Terms and definitions . 8 4 Safety requirements and/or protective/risk reduction measures . 11 4.1 General . 11 4.2 Start, stop and restart functions . 11 4.2.1 Start function . 11 4.2.2 Stop function . 11 4.2.3 Restart function . 11 4.3 Safety related parts of the control system . 11 4.4 Emergency stop . 12 4.5 Emergency stop devices . 12 4.6 Mechanical hazards . 12 4.6.1 General . 12 4.6.2 Safeguarding and risk reduction measures . 12 4.6.3 Guidance for interpreting subclauses 4.6.4 to 4.6.7 . 13 4.6.4 Safety requirements and/or protective/risk reduction measures preventing mechanical hazards in the feeding area . 14 4.6.5 Safety requirements and/or protective / risk reduction measures preventing mechanical hazards in the transition chute area of the tandem mixer . 28 4.6.6 Safety requirements and/or protective / risk reduction measures preventing mechanical hazards in the discharge area . 31 4.6.7 Safety requirements and/or protective /risk reduction measures preventing mechanical hazards for movement of the rotor drive elements . 33 4.7 Hazards due to the hose assemblies of the hydraulic/pneumatic/heating and cooling systems . 35 4.8 Additional hazards during major cleaning operation, maintenance and repair . 35 4.8.1 Conditions for major cleaning operation, maintenance and repair at internal mixers and laboratory internal mixers . 35 4.8.2 Additional conditions for major cleaning operations, maintenance and repair at laboratory internal mixers . 36 4.9 Hazards due to electrical energy . 36 4.9.1 General . 36 4.9.2 Protection against direct contact . 36 4.9.3 Protection against indirect contact . 36 4.9.4 Protection against ingress of solids and liquids . 36 4.9.5 Electric shock or fire due to electrostatic discharge . 36 4.10 Thermal hazards . 36 4.11 Hazards generated by noise . 37 4.12 Hazards resulting from substances hazardous to health . 37 4.13 Fire hazards . 38 4.14 Slip, trip and fall hazards . 38 4.14.1 Slippage due to leakage from dust seals . 38 SIST EN 12013:2018
EN 12013:2018 (E) 3 4.14.2 Slipping, tripping and falling from permanent means of access . 38 4.15 Ergonomics . 38 5 Verification of the safety requirements and/or protective/risk reduction measures . 38 6 Information for use . 45 6.1 General . 45 6.2 Instruction handbook . 45 6.2.1 General . 45 6.2.2 Installation . 45 6.2.3 Operation . 46 6.2.4 Cleaning and maintenance . 46 6.2.5 Noise . 47 6.2.6 Information on fire hazard emergency procedure . 47 6.3 Marking . 47 6.4 Warning signals and warning signs . 47 Annex A (informative)
List of significant hazards . 48 A.1 General . 48 A.2 Design versions of internal mixers and their working levels . 48 A.3 Hazards, hazardous situations and events . 49 Annex B (normative)
Noise test code for laboratory internal mixers . 62 B.1 Introduction. 62 B.2 Determination of the A-weighted emission sound pressure level at the workstation . 62 B.2.1 Basic standards and measurement procedure . 62 B.2.2 Measurement uncertainty . 63 B.3 Determination of the A-weighted sound power level . 63 B.3.1 Basic standards and measurement procedure . 63 B.3.2 Measurement uncertainty . 64 B.4 Mounting and operating conditions. 64 B.5 Information to be recorded and reported . 65 B.5.1 General . 65 B.5.2 General data. 65 B.5.3 Mounting and operating conditions. 65 B.5.4 Standards . 65 B.5.5 Noise data . 65 B.6 Declaration and verification of noise emission values . 65 Annex C (informative)
Examples of possible technical measures to prevent fire hazards due to exothermically reacting compounds . 68 Annex ZA (informative)
Relationship between this European Standard and the essential requirements of EU Directive 2006/42/EC aimed to be covered . 69 Bibliography . 70
SIST EN 12013:2018
EN 12013:2018 (E) 4 European foreword This document (EN 12013:2018) has been prepared by Technical Committee CEN/TC 145 “Plastics and rubber machines”, 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 July 2018 and conflicting national standards shall be withdrawn at the latest by July 2018. 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 12013:2000+A1:2008. 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(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. The main changes with respect to the previous edition are as follows: — modification of the structure; — list of significant hazards is moved into an informative annex; — clarification that internal mixers for production and for laboratory applications are dealt with; — tandem mixers (combination of two internal mixers) are added; — technical developments in safeguards are taken into account; — revised type-A and type-B standards are taken into account; — the performance levels of safety related parts of control systems are specified in accordance with EN ISO 13849-1:2015; — normative annex on noise measurement and declaration for laboratory internal mixers is added. 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, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. SIST EN 12013:2018
EN 12013:2018 (E) 5 Introduction This document is a type-C standard as stated 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 or hazardous events are covered are indicated in the Scope of this document. When requirements of this type-C standard are different from those which are stated in type-A or type-B standards, the requirements of this type-C standard take precedence over the requirements of the other standards for machines that have been designed and built according to the requirements of this type-C standard. SIST EN 12013:2018
EN 12013:2018 (E) 6 1 Scope This European Standard deals with all significant hazards, hazardous situations or hazardous events relevant to the design and construction of internal mixers during all phases of the machine life cycle (see EN ISO 12100:2010, 5.4), irrespective of their size and of the control modes of the feeding door and discharge door, for production and laboratory applications, when the machines are used as intended and under the conditions of misuse which are reasonably foreseeable by the manufacturer (see Annex A). An internal mixer for production and a tandem mixer with manual feeding begins at the feeding door and ends at the lower edge of the material discharge opening. An internal mixer for production and a tandem mixer with automatic feeding begins at the conveyor, which is an integral part of the machine, and ends at the lower edge of the material discharge opening. A laboratory internal mixer begins at the feeding door and ends at the material container, which is an integral part of the mixer.
With regard to noise emission measurement and declaration, only laboratory mixers are covered. Explosion hazards are not dealt with in this document. NOTE Internal mixers usually do not produce explosive atmospheres. Where materials are processed, which may cause an explosive atmosphere, the Directive 2014/34/EU on the Equipment and protective systems intended for use in potentially explosive atmospheres (ATEX) can be applied. Exhaust systems are not covered. This European Standard is not applicable to internal mixers manufactured before the date of its publication. 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 574:1996+A1:2008, Safety of machinery - Two-hand control devices - Functional aspects - Principles for design EN 614-1:2006+A1:2009, Safety of machinery - Ergonomic design principles - Part 1: Terminology and general principles EN 619:2002+A1:2010, Continuous handling equipment and systems - Safety and EMC requirements for equipment for mechanical handling of unit loads EN 1037:1995+A1:2008, Safety of machinery - Prevention of unexpected start-up EN 60204-1:2006, Safety of machinery - Electrical equipment of machines - Part 1: General requirements (IEC 60204-1:2005, modified) EN 60529:1991, Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989/A1:1999/A2:2013)1)
1) This document is impacted by the amendments EN 60529:1991/A1:2000 and EN 60529:1991/A2:2013. SIST EN 12013:2018
EN 12013:2018 (E) 7 EN 61310-1:2008, Safety of machinery - Indication, marking and actuation - Part 1: Requirements for visual, acoustic and tactile signals (IEC 61310-1:2007) EN 61496-1:2013, Safety of machinery - Electro-sensitive protective equipment - Part 1: General requirements and tests (IEC 61496-1:2012) EN 61496-2:2013, Safety of machinery - Electro-sensitive protective equipment - Part 2: Particular requirements for equipment using active opto-electronic protective devices (AOPDs) (IEC 61496-2:2013) EN ISO 3744:2010, Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Engineering methods for an essentially free field over a reflecting plane (ISO 3744:2010) EN ISO 3746:2010, Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Survey method using an enveloping measurement surface over a reflecting plane (ISO 3746:2010) EN ISO 4413:2010, Hydraulic fluid power - General rules and safety requirements for systems and their components (ISO 4413:2010) EN ISO 4414:2010, Pneumatic fluid power - General rules and safety requirements for systems and their components (ISO 4414:2010) EN ISO 4871:2009, Acoustics - Declaration and verification of noise emission values of machinery and equipment (ISO 4871:1996) EN ISO 9614-2:1996, Acoustics - Determination of sound power levels of noise sources using sound intensity - Part 2: Measurement by scanning (ISO 9614-2:1996) 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 11202:2010, Acoustics - Noise emitted by machinery and equipment - Determination of emission sound pressure levels at a work station and at other specified positions applying approximate environmental corrections (ISO 11202:2010) EN ISO 11204:2010, Acoustics - Noise emitted by machinery and equipment - Determination of emission sound pressure levels at a work station and at other specified positions applying accurate environmental corrections (ISO 11204:2010) EN ISO 12100:2010, Safety of machinery - General principles for design - Risk assessment and risk reduction (ISO 12100:2010) EN ISO 13732-1:2008, 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 13849-1:2015, Safety of machinery - Safety-related parts of control systems - Part 1: General principles for design (ISO 13849-1:2015) EN ISO 13850:2015, Safety of machinery - Emergency stop function - Principles for design (ISO 13850:2015) SIST EN 12013:2018
EN 12013:2018 (E) 8 EN ISO 13855:2010, Safety of machinery - Positioning of safeguards with respect to the approach speeds of parts of the human body (ISO 13855:2010) EN ISO 13856-1:2013, Safety of machinery - Pressure-sensitive protective devices - Part 1: General principles for design and testing of pressure-sensitive mats and pressure-sensitive floors (ISO 13856-1:2013) EN ISO 13857:2008, Safety of machinery - Safety distances to prevent hazard zones being reached by upper and lower limbs (ISO 13857:2008) EN ISO 14119:2013, Safety of machinery - Interlocking devices associated with guards - Principles for design and selection (ISO 14119:2013) EN ISO 14120:2015, Safety of machinery - Guards - General requirements for the design and construction of fixed and movable guards (ISO 14120:2015) EN ISO 14122-1:2016, Safety of machinery - Permanent means of access to machinery - Part 1: Choice of fixed means and general requirements of access (ISO 14122-1:2016) EN ISO 14122-2:2016, Safety of machinery - Permanent means of access to machinery - Part 2: Working platforms and walkways (ISO 14122-2:2016) EN ISO 14122-3:2016, Safety of machinery - Permanent means of access to machinery - Part 3: Stairs, stepladders and guard-rails (ISO 14122-3:2016) EN ISO 14122-4:2016, Safety of machinery - Permanent means of access to machinery - Part 4: Fixed ladders (ISO 14122-4:2016) CLC/TR 60079-32-1:2015, Explosive atmospheres - Part 32-1: Electrostatic Hazards - Guidance 3 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 internal mixer mixing machine for the discontinuous production of rubber or plastic compounds with two counter rotating horizontal rotors within a mixing chamber Note 1 to entry: The main parts of an internal mixer are shown in Figure 1: — a feed hopper with several openings: — at the feed side, a feed opening equipped with a door (feeding door) (d); — at the side opposite to the feed side, an inspection/access opening (hopper rear opening) equipped with a fixed enclosing guard or moveable guard (hopper rear door) (e); — possible additional feed openings for connection to the material handling system (f); — a floating weight which applies pressure to the compound (g); — a drop type discharge door (h). SIST EN 12013:2018
EN 12013:2018 (E) 9
Key a rotors f feed opening for connection to the material handling system b mixing chamber g floating weight for applying pressure on the compound c feed hopper h discharge device d feeding door n working platform e rear opening/rear door o internal mixer platform, material discharge level Figure 1 — Main parts of an internal mixer 3.2 laboratory internal mixer internal mixer with a chamber volume up to 10 l 3.3 tandem mixer combination of two internal mixers, whereby the lower internal mixer is equipped with a transition chute and a pusher flap instead of a floating weight Note 1 to entry: The main parts of a tandem mixer are shown in Figure 2. SIST EN 12013:2018
EN 12013:2018 (E) 10
Key 1 tandem mixer 2 upper internal mixer
3 lower internal mixer
a rotors i transition chute b mixing chamber k pusher flap c feed hopper l opening d feeding door m inspection door e rear door opening n working platform f feed opening for material handling system connections o internal mixer platform, material discharge level of the upper mixer g floating weight for applying pressure on the compound p internal mixer platform, material discharge level of the tandem mixer h discharge device
Figure 2 — Main parts of a tandem mixer 3.4 mixing chamber part of the machine comprising two mixing chamber halves, rotors, side walls and discharge door, where the mixing process runs SIST EN 12013:2018
EN 12013:2018 (E) 11 3.5 pusher flap pivoting door of the transition chute to open the mixing chamber of the lower internal mixer for feeding, or to cover this mixing chamber opening 3.6 chamber volume volume within the halves of the mixing chamber and the floating weight in the lower position or the pusher flap closed 3.7 major cleaning and/or maintenance operations cleaning and/or maintenance operation at the shutdown internal mixer, which requires suspension of production, the internal mixer to be emptied and access to the mixing chamber or to the floating weight 3.8 manual mode selectable mode of operation that allows manual activation of individual movements 3.9 automatic mode selectable mode of operation that runs one or more cycles continuously driven by the control system 4 Safety requirements and/or protective/risk reduction measures 4.1 General Machinery shall comply with the safety requirements and/or protective/risk reduction measures of this clause. In addition, the machine shall be designed according to the principles of EN ISO 12100:2010 for relevant but not significant hazards, which are not dealt with by this document. 4.2 Start, stop and restart functions 4.2.1 Start function The start of an operation shall be possible only when all safeguards are in place and functional (see EN 60204-1:2006, 9.2.5.2). The machine shall only be started by actuation of the start device provided for that purpose. 4.2.2 Stop function The normal stop command shall function as a category 0 in accordance with EN 60204-1:2006, 9.2.2. 4.2.3 Restart function An interruption or a failure of the power supply shall not result in a loss of safety function until a complete stop is reached and restoration of the energy supply shall not result in the automatic restarting of the machine (see EN ISO 12100:2010, 6.2.11.4 and 6.2.11.5). 4.3 Safety related parts of the control system The safety related parts of the control system shall be in accordance with EN ISO 13849-1:2015. The required performance levels (PLr) for the relevant safety functions are given in the corresponding subclauses. SIST EN 12013:2018
EN 12013:2018 (E) 12 4.4 Emergency stop Emergency stop equipment shall comply with EN ISO 13850:2015. The emergency stop shall interrupt all energy supply for the internal mixer. The stop category shall be in accordance with category 0 of EN 60204-1:2006, 9.2.2. The emergency stop safet
...
SLOVENSKI STANDARD
oSIST prEN 12013:2015
01-december-2015
Stroji za predelavo gume in plastike - Notranji mešalniki - Varnostne zahteve
Plastics and rubber machines - Internal mixers - Safety requirements
Kunststoff- und Gummimaschinen - Innenmischer - Sicherheitsanforderungen
Machines pour les matières plastiques et le caoutchouc - Mélangeurs internes -
Prescritions de sécurité
Ta slovenski standard je istoveten z: prEN 12013
ICS:
83.200 Oprema za gumarsko Equipment for the rubber and
industrijo in industrijo plastics industries
polimernih materialov
oSIST prEN 12013:2015 en,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 12013:2015
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oSIST prEN 12013:2015
DRAFT
EUROPEAN STANDARD
prEN 12013
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2015
ICS 83.200 Will supersede EN 12013:2000+A1:2008
English Version
Plastics and rubber machines - Internal mixers - Safety
requirements
Machines pour les matières plastiques et le caoutchouc Kunststoff- und Gummimaschinen - Innenmischer -
- Mélangeurs internes - Prescritions de sécurité Sicherheitsanforderungen
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 145.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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-CENELEC
Management Centre has the same status as the official versions.
CEN members are the national standards bodies of 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, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 12013:2015 E
worldwide for CEN national Members.
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oSIST prEN 12013:2015
prEN 12013:2015 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
4 Safety requirements and/or protective/risk reduction measures . 9
4.1 General . 9
4.2 Safety related parts of the control system . 9
4.3 Emergency stop . 9
4.4 Emergency stop devices . 9
4.5 Mechanical hazards . 10
4.6 Hazards due to the hose assemblies of the hydraulic/pneumatic/heating and cooling
systems . 30
4.7 Additional hazards during major cleaning operation, maintenance and repair . 30
4.8 Hazards due to electrical energy . 31
4.9 Thermal hazards . 31
4.10 Hazards generated by noise . 31
4.11 Hazards resulting from substances hazardous to health . 32
4.12 Fire hazards . 32
4.13 Slip, trip and fall hazards . 32
4.14 Ergonomics . 32
4.15 Hazards when using ancillary equipment . 32
5 Verification of the safety requirements and/or protective/risk reduction measures . 33
6 Information for use . 39
6.1 Instruction handbook . 39
6.2 Marking . 41
6.3 Warning and warning signs . 42
Annex A (informative) List of significant hazards . 43
Annex B (normative) Noise measurement and declaration . 56
Annex C (informative) Examples of possible technical measures to prevent fire hazards in
the case where certain exothermically reacting compounds cannot be released from
the mixing chamber in the event of a power failure . 60
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive 2006/42/EC . 61
Bibliography . 62
2
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oSIST prEN 12013:2015
prEN 12013:2015 (E)
European foreword
This document (prEN 12013:2015) has been prepared by Technical Committee CEN/TC 145 “Plastics
and rubber machines”, the secretariat of which is held by UNI.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 12013:2000+A1:2008.
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(s).
For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this
document.
The main changes with respect to the previous edition are as follows:
— modification of the structure;
— list of significant hazards are moved into an informative annex;
— clarification that internal mixers for production and for laboratory applications are dealt with;
— tandem mixers (combination of two internal mixers) are added;
— technical developments in safeguards are taken into account;
— revised type-A and type-B standards are taken into account;
— the performance levels of safety related parts of control systems are specified in accordance with
EN ISO 13849-1;
— normative annex on noise measurement and declaration is added.
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Introduction
This document is a type C standard as stated in EN ISO 12100:2010.
The machinery concerned and the extent to which hazards, hazardous situations and events are
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 the other
standards, for machines that have been designed and built according to the provisions of this type C
standard.
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1 Scope
This European Standard deals with all significant hazards, hazardous situations or hazardous events
relevant to the design and construction of internal mixers for production and laboratory applications,
when the machines are used as intended and under the conditions of misuse which are reasonably
foreseeable by the manufacturer (see Annex A).
An internal mixer begins at the feed openings and ends at the discharge opening.
Internal mixers usually do not produce explosive atmospheres. Where materials are processed, which
may cause an explosive atmosphere, the Directive 94/9/EC on the Equipment and protective systems
intended for use in potentially explosive atmospheres (ATEX) should be applied. Explosion hazards are
not dealt with in this document.
The safety requirements for the design of exhaust systems and of ancillary equipment are not covered.
The safety requirements for the interaction between internal mixers and ancillary equipment are
covered.
This European Standard is not applicable to internal mixers manufactured before the date of its
publication.
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.
CLC/TR 60079-32-1, Explosive atmospheres - Part 32-1: Electrostatic Hazards - Guidance
EN 574, Safety of machinery - Two-hand control devices - Functional aspects - Principles for design
EN 614-1, Safety of machinery - Ergonomic design principles -Part 1: Terminology and general principles
EN 953:1997+A1:2009, Safety of machinery - Guards - General requirements for the design and
construction of fixed and movable guards.
EN 1037, Safety of machinery - Prevention of unexpected start-up
EN 60204-1:2006, Safety of machinery - Electrical equipment of machines - Part 1: General requirements
(IEC 60204-1:2005, modified)
EN 60529:1991 + A1:2000 + A2:2013, Degrees of protection provided by enclosures (IP code)
(IEC 60529:1989/A1:1999/A2:2013)
EN 61310-1, Safety of machinery - Indication, marking and actuation - Part 1: Requirements for visual,
acoustic and tactile signals (IEC 61310-1)
EN 61496-1, Safety of machinery - Electro-sensitive protective equipment - Part 1: General requirements
and tests (IEC 61496-1)
EN 61496-2, Safety of machinery - Electro-sensitive protective equipment - Part 2: Particular
requirements for equipment using active opto-electronic protective devices (AOPDs) (IEC 61496-2)
EN ISO 4413, Hydraulic fluid power - General rules and safety requirements for systems and their
components (ISO 4413)
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EN ISO 4414, Pneumatic fluid power - General rules and safety requirements for systems and their
components (ISO 4414)
EN ISO 4871:2009, Acoustics - Declaration and verification of noise emission values of machinery and
equipment (ISO 4871:1996)
EN ISO 11202:2010, Acoustics - Noise emitted by machinery and equipment - Determination of emission
sound pressure levels at a work station and at other specified positions applying approximate
environmental corrections (ISO 11202:2010)
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 13850:2008, Safety of machinery - Emergency stop - Principles for design (ISO 13850:2006)
EN ISO 13855, Safety of machinery - Positioning of safeguards with respect to the approach speeds of
parts of the human body (ISO 13855)
EN ISO 13856-1, Safety of machinery - Pressure-sensitive protective devices - Part 1: General principles for
design and testing of pressure-sensitive mats and pressure-sensitive floors (ISO 13856-1)
EN ISO 13857:2008, Safety of machinery - Safety distances to prevent hazard zones being reached by
upper and lower limbs (ISO 13857:2008)
EN ISO 14119:2013, Safety of machinery - Interlocking devices associated with guards - Principles for
design and selection (ISO 14119:2013)
EN ISO 14122-1, Safety of machinery - Permanent means of access to machinery - Part 1: Choice of fixed
means of access between two levels (ISO 14122-1)
EN ISO 14122-2, Safety of machinery - Permanent means of access to machinery - Part 2: Working
platforms and walkways (ISO 14122-2)
EN ISO 14122-3, Safety of machinery - Permanent means of access to machinery - Part 3: Stairs,
stepladders and guard-rails (ISO 14122-3)
EN ISO 14122-4, Safety of machinery - Permanent means of access to machinery - Part 4: Fixed ladders
(ISO 14122-4)
3 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
internal mixer
mixing machine for the discontinuous production of rubber or plastic compounds with two counter
rotating horizontal rotors within a mixing chamber
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Note 1 to entry: The main parts of an internal mixer are:
— a feed hopper with several openings:
— at the feed side, a feed opening equipped with a door (hopper front door) (d);
— at the side opposite to the feed side, an inspection/access opening (hopper rear opening) equipped with
a fixed or moveable guard (hopper rear door) (e);
— possible additional feed openings for connection to feeding ducts (f);
— a floating weight which applies pressure to the materials to be mixed (g);
— a drop type or sliding type discharge door (h).
Note 2 to entry: The main parts of an internal mixer are shown in Figure 1.
3.2
laboratory internal mixer
internal mixer with a chamber volume up to 10 l
3.3
tandem mixer
combination of two internal mixers, whereby the lower internal mixer is equipped with a transition
chute instead of a floating weight
Note 1 to entry: The main parts of a tandem mixer are shown in Figure 2.
Key
a rotors f feed opening for material handling system connections
b mixing chamber g floating weight for applying pressure on the compound
c feed hopper h discharge device
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d feeding door n operating platform
e rear door opening o internal mixer platform, material discharge level
Figure 1 — Main parts of an internal mixer
Key
1 tandem mixer 2 upper internal mixer
3 lower internal mixer
a rotors i transition chute
b mixing chamber k pusher flap
c feed hopper l opening
d feeding door m inspection door
e rear door opening n operating platform
f feed opening for material handling o internal mixer platform, material discharge
system connections level
g floating weight for applying pressure on p internal mixer platform, material discharge
the compound level of the tandem mixer
h discharge device
Figure 2 — Main parts of a tandem mixer
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3.4
mixing chamber
part of the machine comprising two mixing chamber halves, rotors, side walls and discharge door,
where the mixing process runs
3.5
chamber volume
volume within the halves of the mixing chamber and the floating weight or the pusher flap
3.6
ancillary equipment
equipment which interacts with the internal mixer
Note 1 to entry: Examples for ancillary equipment: belt conveyors, bin tippers, powder or liquid feeding
systems, two-roll mills and extruders.
3.7
major cleaning and/or maintenance operations
cleaning and/or maintenance operation at the shutdown and secured internal mixer, which requires
suspension of production, the mixer to be emptied and access to the mixing chamber or to the floating
weight
4 Safety requirements and/or protective/risk reduction measures
4.1 General
Machinery shall comply with the safety requirements and/or protective/risk reduction measures of this
clause. In addition, the machine shall be designed according to the principles of EN ISO 12100:2010 for
relevant but not significant hazards, which are not dealt with by this document.
4.2 Safety related parts of the control system
The safety related parts of the control system shall be in accordance with EN ISO 13849-1. The required
performance levels (PL ) for the relevant safety functions is given in the corresponding subclauses.
r
4.3 Emergency stop
Emergency stop equipment shall be in accordance with category 0 of EN ISO 13850:2008. The
emergency stop shall interrupt all energy supply for the internal mixer and shall bring the upstream
and downstream equipment to rest if its continued operation can be hazardous.
The control circuit of the internal mixer shall be designed in such a way that it is capable of exchanging
signals with emergency stop circuits of downstream or upstream equipment. The method how to
process the signals depends on the mixing process and shall be agreed between the manufacturer and
the user and documented.
The emergency stop safety function shall be in accordance with PL = c with two input channels.
r
When a fire emergency procedure has started, it shall be possible to activate manually the completion of
the fire emergency procedure even if an emergency stop has been activated.
4.4 Emergency stop devices
One or more emergency stop actuators shall be provided. The number of the actuators depends on the
dimensions of the machine and its configuration. The actuators shall be so positioned, that from all of
the operating positions at least one is easily accessible. Emergency stop devices shall be positioned at
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least at the operating position (control panel), at the hopper, at the hydraulic unit and at the control
cabinet.
For laboratory internal mixers, a single actuator mounted at the control panel is sufficient, if the control
panel is positioned in the vicinity of the feed openings and a clear view to these openings is ensured.
4.5 Mechanical hazards
4.5.1 General
Depending on the design of the machine, single safety solutions or a combination of safety solutions are
possible for the individual local danger point or individual local danger area.
4.5.2 Safeguarding and complementary protective/risk reduction measures
For safeguarding and complementary protective/risk reduction measures referred to in Table 1, the
following apply:
— guards shall be in accordance with EN 953 taking into consideration the safety distance of
EN ISO 13857. For reaching over protective structures the choice of Table 1 or Table 2 is given in
the relevant subclauses;
— interlocking guards shall be in accordance with EN ISO 14119:2013, 3.2;
— interlocking guards with guard locking shall be in accordance with EN ISO 14119:2013, 3.3;
— the safety related parts of the control system shall be in accordance with PL = c, subject to other
r
provisions in relevant subclauses;
— the positioning of safeguards with respect to the approach speeds of parts of the human body shall
be in accordance with EN ISO 13855;
— two-hand control devices shall be in accordance with EN 574; the required types are specified in
the relevant subclauses;
— hold-to-run control devices shall be in accordance with EN ISO 12100:2010, 3.28.3;
— electro-sensitive protective equipment (e.g. light curtains) shall be in accordance with EN 61496-1;
— active opto-electronic protective devices (AOPDs) shall be in accordance with EN 61496-2;
— sensitive mats and pressure sensitive floors shall be in accordance with EN ISO 13856-1;
— to prevent whole body access between light curtains and danger areas the maximum distance shall
be 120 mm.
4.5.3 Guidance for interpreting Tables in subclauses
The different protective measures for each hazard are separated in table rows. Each measure in a row
shall be deemed to be a self-contained alternative.
The first column "Admissible protective measures" contains one or more alternative safety solutions.
The second column "Mandatory requirements for the protective measures" contains requirements
which need to be applied in addition to the corresponding protective measure in the first column of the
same row.
The third column contains, if any, the required performance level.
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4.5.4 Safety requirements and/or protective/risk reduction measures preventing mechanical hazards in the feeding area
4.5.4.1 Movement of the feeding door
Admissible protective measure Mandatory requirement for the protective measures R equired performance level
PL
r
Fixed guards The maximum distance between fixed or movable parts of the machine shall be not relevant
120 mm in order to avoid whole body access.
Interlocking guards — The maximum distance between the guard and fixed parts of the machine PL = d
r
shall be 120 mm in order to avoid whole body access (see EN ISO 13857);
Where the movement of the
and
feeding door can only be
— the opening of the guard shall stop the movement of the feeding door. operated manually: PL = c
r
Conveyor acting as an interlocking guard — The maximum distance between fixed or movable parts of the machine shall PL = d
r
be 120 mm in order to avoid whole body access; and
Where the movement of the
— the position of the conveyor shall be monitored. The removal or shifting of feeding door can only be
the conveyor shall stop the machine. operated manually: PL = c
r
Two-hand control devices, Type III Β for The danger area shall be clearly visible. PL = c
r
triggering the movement of the feeding
door
Hold-to-run control device for triggering — The danger area shall be clearly visible; and PL = c
r
the movement of the feeding door.
— the minimum distance to the closest crushing and shearing points shall be at
least 2 m.
Operator monitoring by means of The triggering of the devices (e.g. scanners, pressure sensitive mats/floors or light PL = d
r
presence detective devices curtains) shall stop the movements of the feeding door.
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4.5.4.2 Movement of externally located rotating parts on the feeding door (cams)
Admissible protective measure Mandatory requirement for the protective measures Required performance level
PL
r
Fixed guards - not relevant
Safety distances Access not possible due to the mounting situation. not relevant
4.5.4.3 Reaching through lateral or rear openings
Admissible protective measure Mandatory requirement for the protective measures Required performance level
PL
r
Ducts, feeding channels or covers on The ducts, feeding channels and covers shall be so designed that they act as fixed not relevant
lateral or rear openings guards
4.5.4.4 Reaching through exhaust openings
Admissible protective measure Mandatory requirement for the protective measures Required performance level
PL
r
Connection flange in combination with an — The combination of connection flange in combination with an exhaust system not relevant
exhaust system shall act as a fixed guard.; and
— information shall be given in the instruction handbook about the installation
of an exhaust system and that the internal mixer may not be operated
without the installation of an exhaust channel.
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4.5.4.5 Movement of the floating weight
Admissible protective measure Mandatory requirement for the protective measures Required performance level
PL
r
Fixed guards not relevant
Conveyor acting as an interlocking guard — The maximum distance between fixed or movable parts of the machine shall PL = d
r
be 120 mm in order to avoid whole body access; and
Where the movement of the
— the position of the conveyor has to be monitored. The removal or shifting of floating weight can only be
the conveyor shall stop the machine. operated manually: PL = c
r
Automatic controlled mode: Opening of the feeding door shall stop the movement of the floating weight. PL = d
r
Use of a feeding door acting as an
interlocking guard
Manual mode: — The manual mode shall be activated by a mode selector; and PL = c
r
Two-hand control, Type III B for
the danger area shall be clearly visible.
triggering the movement of the floating
weight movement
Manual mode: — The manual mode shall be activated by a mode selector; and PL = c
r
Hold-to-run control device
— and the danger area shall be clearly visible. And
— the minimum distance to the closest crushing and shearing points shall be at
least 2 m.
Interlocking guard with guard locking The movement of the floating weight shall only be possible if PL = d
r
— the interlocking guard is closed; or
— the feeding door is closed; or
— the machine is in ”Manual mode”; the movement of the floating weight shall
be released by either a two-hand control device, Type III B or a hold-to-run
control device
Unlocking of the interlocking guard shall only be possible if the feeding door is
closed or the machine is in manual mode.
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4.5.4.6 Movement of the rotors by falling on through feed openings
Admissible protective measure Mandatory requirement for the protective measures Required performance level
PL
r
Minimum height of feeding door and — The upper edge of the opened feeding door shall be positioned at a minimum not relevant
openings height of 1 100 mm above the operator’s normal standing level in order to act
as fencing against falling over in accordance with EN ISO 14122-3; and
— the lower edge of additional feed openings and openings in fixed guards shall
be positioned at a minimum height of 1 100 mm above the operator’s normal
standing level.
Fixed guard Fixed guard or fixed conveyor acting as a fixed guard with a minimum height of not relevant
1100 mm.
Movable conveyor acting as an The interlocking shall prevent the opening of the feeding door. PL = d
r
interlocking guard with guard locking
Unlocking of the conveyor shall only be possible when the feeding door is closed.
Limitation of the dimensions of the feed Maximum dimensions for A and B in accordance with Figure 3: not relevant
opening
500 mm x 400 mm, respectively 400 mm x 500 mm
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Figure 3 — Hopper front door — Dimensions of the access opening
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4.5.4.7 Movement of the rotors by reaching through feed openings
Admissible protective measure Mandatory requirement for the protective measures Required
performance level
PL
r
Safety distances — For reaching over protective structures the safety distances in accordance with not relevant
EN ISO 13857:2008, Table 2 shall apply; and
— for reaching through openings the safety distances in accordance with
...
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