SIST EN 703:2021
(Main)Agricultural machinery - Safety - Silage loading, mixing and/or chopping and distributing machines
Agricultural machinery - Safety - Silage loading, mixing and/or chopping and distributing machines
This document, used together with EN ISO 4254-1, specifies the safety requirements and their verification for the design and construction of mounted, semi-mounted, trailed or self-propelled machines that have a combination of two or more of the following functions: loading, mixing, chopping and distributing silage and/or other feedstuffs or materials used for animal bedding such as straw, to be used by one operator only. It includes those fitted with a built-in loading crane. In addition, it specifies the type of information on safe working practices (including residual risks) to be provided by the manufacturer.
This document applies only to machines that have the following functional combinations:
- mixing and distributing functions; or
- mixing, chopping and distributing functions; or
- loading, mixing and distributing functions; or
- loading, mixing, chopping and distributing functions; or
- chopping and distributing functions; or
- loading, chopping and distributing functions.
Silage block cutters, even if they carry out a single function, are covered by this document.
This document does not apply to:
- machines which pick up green fodder directly from the field;
- loading cranes;
- silage buckets.
NOTE 1 Loading cranes are dealt with in EN 12999.
NOTE 2 Autonomous silage loading, mixing and/or chopping and distributing machines (robotic feed systems) are to be dealt with in a separate standard (under preparation).
This document deals with the significant hazards, hazardous situations and events relevant to machines for loading, mixing and/or chopping and distributing silage and/or other feedstuffs, when they are used as intended and under the conditions foreseen by the manufacturer as listed in Clause 4, except for the hazards arising from:
- failure of the control circuit;
- inadequate seating;
- inadequate lighting;
- travelling of machinery;
- break-up of parts rotating at high speed;
- cutting hazard during service on sharp parts (e.g. blades of the mixing and/or chopping device).
It is not applicable to environmental hazards (except noise).
It does not deal with stability when travelling.
This document is not applicable to machines for loading, mixing and/or chopping and distributing silage and/or other feedstuffs which are manufactured before the date of publication of this document by CEN.
Landmaschinen - Sicherheit - Maschinen zum Laden, Mischen und/oder Zerkleinern und Verteilen von Silage
Dieses Dokument, gemeinsam mit EN ISO 4254-1 angewendet, legt die sicherheitstechnischen Anforderungen und deren Überprüfung fest für Gestaltung und Konstruktion von angebauten, aufgesattelten, gezogenen oder selbstfahrenden Maschinen mit zwei oder mehr der folgenden Funktionen: Laden, Mischen, Zerkleinern und Verteilen von Silage und/oder anderen Futtermitteln oder Materialien, die als Tiereinstreu benutzt werden, z. B. Stroh. Die Benutzung erfolgt durch nur eine Bedienungsperson. Maschinen mit angebautem Ladekran sind eingeschlossen. Außerdem enthält dieses Dokument Informationen über sicheres Arbeiten (einschließlich Restgefährdungen), die vom Hersteller zur Verfügung zu stellen sind.
Dieses Dokument gilt nur für Maschinen mit den folgenden Kombinationen von Funktionen:
- Mischen und Verteilen, oder
- Mischen, Zerkleinern und Verteilen, oder
- Laden, Mischen und Verteilen, oder
- Laden, Mischen, Zerkleinern und Verteilen, oder
- Zerkleinern und Verteilen, oder
- Laden, Zerkleinern und Verteilen.
Dieses Dokument gilt für Siloblockschneider, auch wenn sie nur eine einzelne Funktion haben.
Dieses Dokument ist nicht anwendbar auf:
- Maschinen, die das Grünfutter direkt vom Feld aufnehmen;
- Ladekrane;
- Silagezangen.
ANMERKUNG 1 Ladekrane werden in EN 12999 behandelt.
ANMERKUNG 2 Automatisierte Maschinen zum Laden der Silage, Mischen und/oder Zerkleinern und Verteilen von Silage (robotergesteuerte Zuführsysteme) sollen in einer separaten Norm behandelt werden (in Vorbereitung).
Dieses Dokument behandelt alle signifikanten Gefährdungen, Gefährdungssituationen und Gefährdungs-ereignisse von Maschinen zum Laden, Mischen und/oder Zerkleinern und Verteilen von Silage und/oder anderen Futtermitteln, wenn sie wie beabsichtigt und unter den vom Hersteller vorgesehenen Bedingungen verwendet werden (siehe Abschnitt 4), mit Ausnahme der Gefährdungen durch:
- Ausfall des Steuerungssystems;
- ungeeigneten Sitz;
- ungeeignete Beleuchtung;
- Verfahren der Maschine;
- Bruch von mit hoher Geschwindigkeit rotierenden Teilen;
- Gefährdung durch Schneiden während des Betriebs an scharfen Teilen (z. B. Schneidmesser der Misch und/oder Zerkleinerungseinrichtung).
Es gilt nicht für Umweltgefährdungen (ausgenommen Geräusche).
Es behandelt nicht die Standfestigkeit während der Fahrbewegung.
Dieses Dokument gilt nicht für Maschinen zum Laden, Mischen und/oder Zerkleinern und Verteilen von Silage und/oder anderen Futtermitteln, die hergestellt wurden, bevor CEN dieses Dokument veröffentlichte.
Matériel agricole - Sécurité - Désileuses chargeuses, mélangeuses et/ou hacheuses et distributrices
Le présent document, utilisé conjointement avec l’EN ISO 4254-1, spécifie les prescriptions de sécurité et leurs vérifications pour la conception et la construction des machines portées, semi-portées, traînées ou automotrices qui combinent deux ou plusieurs des fonctions suivantes : chargement, mélange, hachage et distribution de l'ensilage et/ou autres aliments pour animaux ou matériaux utilisés pour la litière des animaux comme la paille, destinées à être utilisées par un seul opérateur. Il comprend celles équipées d'une grue de chargement. En outre, il spécifie le type d'informations que le fabricant doit fournir sur les pratiques d'utilisation sûre (incluant les risques résiduels).
Le présent document s'applique uniquement aux machines qui ont une combinaison des fonctions suivantes :
- les fonctions de mélange et de distribution ; ou
- les fonctions de mélange, hachage et distribution ; ou
- les fonctions de chargement, mélange et distribution ; ou
- les fonctions de chargement, mélange, hachage et distribution ; ou
- les fonctions de hachage et de distribution ; ou
- les fonctions de chargement, de hachage et de distribution.
Les désileuses bloc, même si elles n’effectuent qu’une seule fonction, sont couvertes par le présent document.
Le présent document ne s'applique pas aux :
- machines qui ramassent directement dans le champ ;
- grues de chargement ;
- godets désileurs.
NOTE 1 Les grues de chargement sont traitées dans l’EN 12999.
NOTE 2 Les machines autonomes pour le chargement, le mélange et/ou le hachage et la distribution de l'ensilage (systèmes d'alimentation robotiques) sont traitées dans une norme distincte (en cours d'élaboration).
Le présent document traite des phénomènes dangereux, des situations et des événements dangereux significatifs applicables aux machines pour le chargement, le mélange et/ou le hachage et la distribution d’ensilage et/ou d’autres matières d’alimentation, lorsqu’elles sont utilisées normalement et dans des conditions prévues par le fabricant telles qu’énumérées à l’Article 4, à l’exception des phénomènes dangereux engendrés par :
- une défaillance du circuit de commande ;
- un siège inadapté ;
- un éclairage inadapté ;
- le déplacement de la machine ;
- la rupture de pièces en rotation à grande vitesse ;
- le phénomène dangereux de coupure pendant l'entretien de pièces coupantes (par exemple, les lames/couteaux du dispositif de mélange et/ou de hachage).
Il ne traite pas des phénomènes dangereux dus à l’environnement (à l’exception du bruit).
Il ne traite pas de la stabilité lors du transport.
Le présent document n'est pas applicable aux machines pour le chargement, le mélange et/ou le hachage et la distribution d’ensilage et/ou d’autres matières d’alimentation qui ont été fabriquées avant la date de publication de ce document par le CEN.
Kmetijski stroji - Varnost - Stroji za nalaganje, mešanje in/ali rezanje ter raztros silaže
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 703:2021
01-september-2021
Nadomešča:
SIST EN 703:2004+A1:2009
Kmetijski stroji - Varnost - Stroji za nalaganje, mešanje in/ali rezanje ter raztros
silaže
Agricultural machinery - Safety - Silage loading, mixing and/or chopping and distributing
machines
Landmaschinen - Sicherheit - Maschinen zum Laden, Mischen und/oder Zerkleinern und
Verteilen von Silage
Matériel agricole - Sécurité - Désileuses chargeuses, mélangeuses et/ou hacheuses et
distributrices
Ta slovenski standard je istoveten z: EN 703:2021
ICS:
65.060.99 Drugi kmetijski stroji in Other agricultural machines
oprema and equipment
SIST EN 703:2021 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 703:2021
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SIST EN 703:2021
EN 703
EUROPEAN STANDARD
NORME EUROPÉENNE
July 2021
EUROPÄISCHE NORM
ICS 65.060.99 Supersedes EN 703:2004+A1:2009
English Version
Agricultural machinery - Safety - Silage loading, mixing
and/or chopping and distributing machines
Matériel agricole - Sécurité - Désileuses chargeuses, Landmaschinen - Sicherheit - Maschinen zum Laden,
mélangeuses et/ou hacheuses et distributrices Mischen und/oder Zerkleinern und Verteilen von
Silage
This European Standard was approved by CEN on 12 March 2021.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 703:2021 E
worldwide for CEN national Members.
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EN 703:2021 (E)
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 7
3 Terms and definitions . 8
4 Safety requirements and/or protective/risk reduction measures . 9
4.1 General . 9
4.1.1 Principles . 9
4.1.2 Principles of safety integration . 9
4.1.3 Control systems . 10
4.1.4 Guards and protective devices . 10
4.1.5 Electricity supply, batteries. 10
4.1.6 Extreme temperatures . 10
4.1.7 Fire and explosion . 10
4.1.8 Vibrations . 10
4.1.9 Maintenance . 10
4.1.10 Work positions and operator's station . 10
4.1.11 Uncontrolled movements . 11
4.1.12 Roll-over and tip-over . 11
4.1.13 Means of access . 11
4.1.14 Falling or ejected objects or fluids . 11
4.2 Location of the manual controls . 11
4.2.1 General . 11
4.2.2 Requirements for hold-to-run controls . 11
4.2.3 Additional requirements for manual controls . 12
4.3 Visibility. 12
4.3.1 For work area of the cutting, loading tools and loading door located at front of the
machine . 12
4.3.2 For work area of the cutting, loading tools and loading door located at rear of the
machine . 13
4.4 Loading device . 16
4.4.1 Stopping time of powered cutting and loading tools. 16
4.4.2 Loading door . 16
4.5 Cutting and loading tools . 16
4.5.1 General . 16
4.5.2 Maintenance of cutting tools . 17
4.5.3 Blockages . 17
4.5.4 Protection against inadvertent re-engagement in case of mechanical elements
stopped by blockage . 18
4.6 Mixing and/or chopping device . 18
4.6.1 Protection against contact with moving parts . 18
4.6.2 Checking of the mixing . 19
4.6.3 Top edges of the chamber of the machine . 19
4.6.4 Manual addition of feedstuffs . 20
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4.6.5 Maintenance of mixing and/or chopping tools . 20
4.7 Distribution device . 20
4.7.1 General . 20
4.7.2 Case where a conveyor is used . 21
4.7.3 Case where an auger is used . 26
4.7.4 Case where a distributor cylinder is used . 27
4.7.5 Case of free discharge. 29
4.7.6 Case of turbines . 29
4.8 Weighing device display . 32
4.9 Noise . 33
4.9.1 Noise reduction as a safety requirement . 33
4.9.2 Verification of requirements on noise . 34
4.10 Jacking points . 34
4.11 Brakes . 34
4.12 Stability and immobilisation . 34
4.12.1 Stability and immobilisation of the detached machine . 34
4.12.2 Minimum load on the drawbar hitch . 35
4.13 Remote control . 35
4.14 Electro-magnetic compatibility (EMC) . 35
5 Verification of the safety requirements and/or protective/risk reduction measures . 35
5.1 Measurement of the tools' stopping time . 35
6 Information for use . 36
6.1 Instruction handbook . 36
6.2 Marking . 38
6.3 Safety signs . 39
Annex A (informative) Examples of machines and components . 40
Annex B (informative) List of significant hazards . 49
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2006/42/EC aimed to be covered . 53
Bibliography . 57
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European foreword
This document (EN 703:2021) has been prepared by Technical Committee CEN/TC 144 “Tractors and
machinery for agriculture and forestry”, the secretariat of which is held by AFNOR.
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 January 2022, and conflicting national standards shall
be withdrawn at the latest by January 2022.
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 supersedes EN 703:2004+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 essential requirements of EU Directive(s).
For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this
document.
EN 703:2004+A1:2009 has been technically revised. The following significant changes were introduced:
— update the normative references;
— clarification of the scope (excludes silage buckets);
— improvement of the safety requirements in particular regarding controls, visibility, protection
against cutting tools, blockages, loading door, inspection of mixing, access (addition of feedstuffs),
conveyors, access to turbines;
— addition of new clauses on: jacking points, brakes, stability and immobilisation, remote control,
electro-magnetic compatibility (EMC), completion of instructions, safety signs;
— addition of new subclauses under 4.1 to refer to the relevant clauses of
EN ISO 4254-1:2015 that apply without change or exclusion.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
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, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the
United Kingdom.
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Introduction
This document is a type-C standard as specified in EN ISO 12100.
The machinery concerned and the extent to which hazards, hazardous situations and hazardous events
are covered are indicated in the scope of this document. These hazards are specific to silage loading,
mixing and/or chopping and distributing machines.
Significant hazards that are common to all of the agricultural machines (self-propelled, mounted, semi-
mounted and trailed) are dealt with in EN ISO 4254-1.
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.
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.
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EN 703:2021 (E)
1 Scope
This document, used together with EN ISO 4254-1:2015, specifies the safety requirements and their
verification for the design and construction of mounted, semi-mounted, trailed or self-propelled
machines that have a combination of two or more of the following functions: loading, mixing, chopping
and distributing silage and/or other feedstuffs or materials used for animal bedding such as straw, to be
used by one operator only. It includes those fitted with a built-in loading crane. In addition, it specifies
the type of information on safe working practices (including residual risks) to be provided by the
manufacturer.
This document applies only to machines that have the following functional combinations:
— mixing and distributing functions;
— mixing, chopping and distributing functions;
— loading, mixing and distributing functions;
— loading, mixing, chopping and distributing functions;
— chopping and distributing functions; or
— loading, chopping and distributing functions.
Silage block cutters, even if they carry out a single function, are covered by this document.
This document does not apply to:
— machines which pick up green fodder directly from the field;
— loading cranes;
— silage buckets;
— round or rectangular unbalers.
NOTE 1 Loading cranes are dealt with in EN 12999:2020.
NOTE 2 Autonomous silage loading, mixing and/or chopping and distributing machines (robotic feed systems)
will be dealt with in a separate standard (EN ISO 3991, under preparation).
This document deals with the significant hazards, hazardous situations and events relevant to machines
for loading, mixing and/or chopping and distributing silage and/or other feedstuffs, when they are used
as intended and under the conditions foreseen by the manufacturer as listed in Clause 4, except for the
hazards arising from:
— failure of the control circuit;
— inadequate seating;
— inadequate lighting;
— travelling of machinery;
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— break-up of parts rotating at high speed;
— cutting hazard during service on sharp parts (e.g. blades of the mixing and/or chopping device).
It is not applicable to environmental hazards (except noise).
It does not deal with stability when travelling.
This document is not applicable to machines for loading, mixing and/or chopping and distributing
silage and/or other feedstuffs which are manufactured before the date of publication of this document
by CEN.
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 15811:2014, Agricultural machinery - Fixed guards and interlocked guards with or without guard
locking for moving transmission parts (ISO/TS 28923:2012 modified)
EN ISO 13851:2019, Safety of machinery - Two-hand control devices - Principles for design and selection
(ISO 13851:2019)
1)
EN ISO 4254-1:2015, Agricultural machinery - Safety - Part 1: General requirements (ISO 4254-1:2013)
EN ISO 11688-1:2009, Acoustics - Recommended practice for the design of low-noise machinery and
equipment - Part 1: Planning (ISO/TR 11688-1:1995)
EN ISO 12100:2010, Safety of machinery - General principles for design - Risk assessment and risk
reduction (ISO 12100:2010)
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 13857:2019, Safety of machinery — Safety distances to prevent hazard zones being reached by
upper and lower limbs (ISO 13857:2019)
ISO 3767-1:2016, Tractors, machinery for agriculture and forestry, powered lawn and garden equipment
— Symbols for operator controls and other displays — Part 1: Common symbols
ISO 11684:1995, Tractors, machinery for agriculture and forestry, powered lawn and garden equipment
— Safety signs and hazard pictorials — General principles
ISO 15817:2012, Earth-moving machinery — Safety requirements for remote operator control systems
1)
An amendment is under preparation.
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3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 12100:2010 and the
following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
Note 1 to entry: Examples of machines and components, illustrating the following definitions are given in
Annex A.
3.1 Machines
3.1.1
silage block cutter
machine mounted on the rear 3-point linkage of a tractor that consists of a main guiding frame,
equipped with a set of horizontal tines, carrying the cutting frame equipped with one or more cutting
knives, intended to cut out a silage block, to take it from the silo and to discharge or distribute it
Note 1 to entry: This machine can be equipped with a distribution device.
3.1.2
silage bucket
bucket intended to be fitted as an attachment on a front loader or a self-propelled variable reach truck
and which carries out at least loading and distributing functions
3.1.3
round or rectangular unbaler
machine for unbaling of round or rectangular bales and distribution at ground level
Note 1 to entry: Illustration is given in Figure A.12.
3.2 Functions
3.2.1
mixing
operation for blending two or more different materials without reducing the size of their components
3.2.2
chopping
operation to reduce the size of the constituent elements of a material or to break up an agglomerated or
an entangled material
3.3 Loading device
3.3.1
cutting and loading tools
set of elements, consisting of the loading arm and of tools for taking the materials such as rotary cutters,
knives, blades, teeth, etc., needed for picking-up (i.e. cutting) the material and for loading the machine
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3.3.2
loading crane
powered crane comprising a column, which slews about a base, and a boom system which is attached
onto the top of the column, and which is fitted on the machine and is designed for loading product into
the machine by means of a grab, a hook or any other device
[SOURCE: EN 12999:2011, definition 3.1.1 modified]
3.3.3
loading door
mobile part fitted generally at the rear of the machine, which is used for handling and/or for containing
the material and/or loading the products inside the machine, and which is used as a door for closing the
mixing and/or chopping chamber
3.4
mixing and/or chopping device
set of elements such as one or more rotating auger(s), rotating paddle auger, moving floor, conveyor,
separator, turbine
3.5
distribution device
set of elements (such as conveyor belt, auger, distributor cylinder, turbine) operated to unload the
materials from the machine and to deposit them where required (on the ground, in troughs, on feeding
belts, etc.)
3.6
work station
position of the operator, standing on the ground or on a platform or sitting, to actuate controls or carry
out any other task
3.7
driver's station
position of the operator from where the driving of the machine is controlled
4 Safety requirements and/or protective/risk reduction measures
4.1 General
4.1.1 Principles
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 relevant clauses of
EN ISO 12100:2010 for hazards relevant but not significant, which are not dealt with by this document
(e.g. burns).
4.1.2 Principles of safety integration
2)
EN ISO 4254-1:2015, 4.1, 4.2, and Annex E apply.
2)
Amendment A1 to EN ISO 4254-1:2015 is under preparation. It will include a new Annex E, Guidance for risk assessment
and determination of performance levels for safety-related parts of control systems.
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4.1.3 Control systems
EN ISO 4254-1:2015, 4.5, 4.6, 4.19, 4.20, 5.1.3, 5.1.8 and 6.1 apply.
For safety and reliability of control systems, EN ISO 4254-1:2015, 4.5, 4.6, 4.12, 4.13, 4.14, 4.18, 4.19
and 4.20 apply.
4.1.4 Guards and protective devices
4.1.4.1 General
EN ISO 4254-1:2015, 4.2, 4.10 apply.
EN ISO 13857:2019, Table 1, Table 3, Table 4 and Table 6 as appropriate.
4.1.4.2 Moving transmission parts
Fixed guards to be opened or removed by the use of a tool and interlocking guards with or without
guard locking for moving parts of the power transmission on shall comply with EN 15811:2014.
Unless otherwise specified in 4.4 to 4.7 of this document, moving parts involved in the process
EN ISO 4254-1:2015, 4.2 and 4.10 apply.
4.1.4.3 Transmission of power between self-propelled machinery (or tractor) and recipient
machinery
EN ISO 4254-1:2015, 6.4 applies.
4.1.4.4 Starting and stopping the engine
EN ISO 4254-1:2015, 5.1.8 applies.
4.1.5 Electricity supply, batteries
EN ISO 4254-1:2015, 4.12 and 5.3 apply.
For isolation of energy sources, see EN ISO 4254-1:2015, 5.3.2 and 6.4.
4.1.6 Extreme temperatures
EN ISO 4254-1:2015, 5.5 applies.
4.1.7 Fire and explosion
EN ISO 4254-1:2015, 4.1, 5.1.6 and 5.4 apply.
4.1.8 Vibrations
EN ISO 4254-1:2015, 4.4 applies.
4.1.9 Maintenance
Unless otherwise specified in 4.5.2 and 4.6.5 of this document, EN ISO 4254-1:2015, 4.8, 4.11, 4.15 and
4.17 apply.
See also Clause 6.1 regarding instructions for maintenance.
4.1.10 Work positions and operator's station
Operator stations shall comply with EN ISO 4254-1:2015, 4.7 and 5.1.
Other than operator stations shall comply with EN ISO 4254-1:2015, 4.8.
When provided, seats shall comply with EN ISO 4254-1:2015, 5.1.2.
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4.1.11 Uncontrolled movements
EN ISO 4254-1:2015, 4.9 and 4.5.2 apply.
4.1.12 Roll-over and tip-over
EN ISO 4254-1:2015, 5.7 apply.
4.1.13 Means of access
EN ISO 4254-1:2015, 4.7, 4.8 and 5.1 apply.
4.1.14 Falling or ejected objects or fluids
EN ISO 4254-1:2015, 4.13 applies.
4.2 Location of the manual controls
4.2.1 General
In addition to EN ISO 4254-1:2015, 4.5, the following requirements apply.
It shall not be possible for the operator, when inside the mixing and/or chopping chamber(s), to reach
the manual controls.
The manual controls shall be located such that it is not possible for the operator to reach unguarded
mobile working tools while actuating the control. This requirement is considered met for mounted
machines when the distance between the manual controls and any ung
...
SLOVENSKI STANDARD
oSIST prEN 703:2018
01-oktober-2018
Kmetijski stroji - Varnost - Stroji za nalaganje, mešanje in/ali rezanje ter raztros
silaže
Agricultural machinery - Safety - Silage loading, mixing and/or chopping and distributing
machines
Landmaschinen - Sicherheit - Maschinen zum Laden, Mischen und/oder Zerkleinern und
Verteilen von Silage
Matériel agricole - Sécurité - Désileuses chargeuses, mélangeuses et/ou hacheuses et
distributrices
Ta slovenski standard je istoveten z: prEN 703
ICS:
65.060.99 Drugi kmetijski stroji in Other agricultural machines
oprema and equipment
oSIST prEN 703:2018 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 703:2018
DRAFT
EUROPEAN STANDARD
prEN 703
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2018
ICS 65.060.99 Will supersede EN 703:2004+A1:2009
English Version
Agricultural machinery - Safety - Silage loading, mixing
and/or chopping and distributing machines
Matériel agricole - Sécurité - Désileuses chargeuses, Landmaschinen - Sicherheit - Maschinen zum Laden,
mélangeuses et/ou hacheuses et distributrices Mischen und/oder Zerkleinern und Verteilen von
Silage
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 144.
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, Serbia, 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: Rue de la Science 23, B-1040 Brussels
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 703:2018 E
worldwide for CEN national Members.
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prEN 703:2018 (E)
Contents Page
European foreword . 4
Introduction . 5
1 Scope . 6
2 Normative references . 7
3 Terms and definitions . 7
3.1 machines . 7
3.2 functions . 8
3.3 loading device . 8
4 List of significant hazards . 9
5 Safety requirements and/or protective measures . 12
5.1 General . 12
5.2 Location of the manual controls . 12
5.2.1 General . 12
5.2.2 Requirements for hold-to-run controls . 12
5.2.3 Additional requirements for manual controls . 12
5.3 Visibility. 13
5.3.1 for work area of the cutting, loading tools and loading door . 13
5.4 Loading device . 14
5.4.1 Controls for cutting and loading tools . 14
5.4.2 Loading door . 15
5.5 Safeguarding of the cutting and loading tools when not in use . 15
5.5.1 General . 15
5.5.2 Maintenance of cutting tools . 16
5.5.3 Blockages . 16
5.5.4 Protection against inadvertent re-engagement in case of mechanical elements
stopped by blockage . 17
5.6 Mixing and/or chopping device . 17
5.6.1 Protection against contact with moving parts . 17
5.6.2 Checking of the mixing . 18
5.6.3 Top edges of the chamber of the machine . 18
5.6.4 Manual addition of feedstuffs . 18
5.6.5 Maintenance of mixing and/or chopping tools . 19
5.7 Distribution device . 19
5.7.1 General . 19
5.7.2 Case where a conveyor is used . 19
5.7.3 Case where an auger is used . 23
5.7.4 Case where a distributor cylinder is used . 23
5.7.5 Case of free discharge . 25
5.7.6 Case of turbines. 26
5.8 Weighing device display . 28
5.9 Noise . 29
5.9.1 Noise reduction as a safety requirement . 29
5.9.2 Verification of requirements on noise. 29
5.10 Jacking points . 30
5.11 Brakes. 30
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5.12 Stability and immobilisation . 30
5.12.1 Stability and immobilisation of the detached machine . 30
5.12.2 Minimum load on the drawbar hitch . 31
5.13 Remote control . 31
5.14 Electro-magnetic compatibility (EMC) . 31
6 Verification of the safety requirements and/or protective measures . 31
6.1 Measurement of the tools' stopping time . 31
7 Information for use . 31
7.1 Instruction handbook . 31
7.2 Marking . 34
7.3 Safety signs . 35
Annex A (informative) Examples of machines and components . 37
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Directive 2006/42/EC aimed to be covered . 45
Bibliography . 47
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European foreword
This document (prEN 703:2018) has been prepared by Technical Committee CEN/TC 144 “Tractors and
machinery for agriculture and forestry”, the secretariat of which is held by AFNOR.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 703:2004+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 essential requirements of EU Directive(s).
For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this
document.
EN 703:2004+A1:2009 has been technically revised. The main following changes were introduced:
— update the normative references;
— clarification of the scope (excludes silage buckets);
— improvement of the safety requirements in particular regarding controls, visibility, protection
against cutting tools, blockages, loading door, inspection of mixing, access (addition of feedstuffs),
conveyors, access to turbines;
— addition of new clauses on: jacking points, brakes, stability and immobilisation, remote control,
electro-magnetic compatibility (EMC), completion of instructions, safety signs.
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Introduction
This document is a type-C standard as specified in EN ISO 12100.
The machinery concerned and the extent to which hazards, hazardous situations and hazardous events
are covered are indicated in the scope of this document. These hazards are specific to silage loading,
mixing and/or chopping and distributing machines.
Significant hazards that are common to all the agricultural machines (self-propelled, mounted, semi-
mounted and trailed) are dealt with in EN ISO 4254-1.
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.
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.
5
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1 Scope
This document, used together with EN ISO 4254-1, specifies the safety requirements and their
verification for the design and construction of mounted, semi-mounted, trailed or self-propelled
machines that have a combination of two or more of the following functions: loading, mixing, chopping
and distributing silage and/or other feedstuffs or materials used for animal bedding such as straw, to be
used by one operator only. It includes those fitted with a built-in loading crane. In addition, it specifies
the type of information on safe working practices (including residual risks) to be provided by the
manufacturer.
This document applies only to machines that have the following functional combinations:
— mixing and distributing functions; or
— mixing, chopping and distributing functions; or
— loading, mixing and distributing functions; or
— loading, mixing, chopping and distributing functions; or
— chopping and distributing functions; or
— loading, chopping and distributing functions.
Silage block cutters, even if they carry out a single function, are covered by this document.
This document does not apply to:
— machines which pick up green fodder directly from the field;
— loading cranes;
— silage buckets.
NOTE 1 Loading cranes are dealt with in EN 12999.
NOTE 2 Autonomous silage loading, mixing and/or chopping and distributing machines (robotic feed systems)
are to be dealt with in a separate standard (under preparation).
This document deals with the significant hazards, hazardous situations and events relevant to machines
for loading, mixing and/or chopping and distributing silage and/or other feedstuffs, when they are used
as intended and under the conditions foreseen by the manufacturer as listed in Clause 4, except for the
hazards arising from:
— failure of the control circuit;
— inadequate seating;
— inadequate lighting;
— travelling of machinery;
— break-up of parts rotating at high speed;
— cutting hazard during service on sharp parts (e.g. blades of the mixing and/or chopping device).
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It is not applicable to environmental hazards (except noise).
It does not deal with stability when travelling.
This document is not applicable to machines for loading, mixing and/or chopping and distributing
silage and/or other feedstuffs which are manufactured before the date of publication of this document
by CEN.
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 ISO 4254-1:2015, Agricultural machinery — Safety — Part 1: General requirements (ISO 4254-
1:2013)
EN ISO 12100:2010, Safety of machinery — General principles for design - Risk assessment and risk
reduction (ISO 12100:2010)
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 11688-1, Acoustics — Recommended practice for the design of low-noise machinery and
equipment — Part 1: Planning (ISO/TR 11688-1)
ISO 15817:2012, Earth-moving machinery — Safety requirements for remote operator control systems
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 12100:2010 and the
following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
Note 1 to entry: Examples of machines and components, illustrating the following definitions are given in
Annex A.
3.1 machines
3.1.1
silage block cutter
machine mounted on the rear 3-point linkage of a tractor that consists of a main guiding frame,
equipped with a set of horizontal tines, carrying the cutting frame equipped with one or more cutting
knives, intended to cut out a silage block, to take it from the silo and to discharge or distribute it (this
machine can be equipped with a distribution device)
3.1.2
silage bucket
bucket intended to be fitted as an attachment on a front loader or a self-propelled variable reach truck
and which carries out at least loading and distributing functions
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3.2 functions
3.2.1
mixing
operation for blending two or more different materials without reducing the size of their components
3.2.2
chopping
operation to reduce the size of the constituent elements of a material or to break up an agglomerated or
an entangled material
3.3 loading device
3.3.1
cutting and loading tools
set of elements, consisting of the loading arm and of tools for taking the materials such as rotary cutters,
knives, blades, teeth, etc., needed for picking-up (i.e. cutting) the material and for loading the machine
3.3.2
loading crane
powered crane comprising a column, which slews about a base, and a boom system which is attached
onto the top of the column. The crane is fitted on the machine and is designed for loading product into
the machine by means of a grab, a hook or any other device
Note 1 to entry: Adapted from EN 12999:2002, definition 3.1.1.
3.3.3
loading door
mobile part fitted generally at the rear of the machine, which is used for handling and/or for containing
the material and/or loading the products inside the machine. It is used as a door for closing the mixing
and/or chopping compartment
3.4
mixing and/or chopping device
set of elements such as one or more rotating auger(s), rotating paddle auger, conveyor, separator,
turbine
3.5
distribution device
set of elements (such as conveyor belt, auger, distributor cylinder, turbine) operated to unload the
materials from the machine and to deposit them where required (on the ground, in troughs, on feeding
belts, etc.)
3.6
work station
position of the operator, standing on the ground or on a platform or sitting, to actuate controls or carry
out any other task
3.7
driver's station
position of the operator from where the driving of the machine is controlled
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3.8
flap
hinged guard which is closed when the machine is operating and which can be opened for service and
maintenance operations
4 List of significant hazards
Table 1 gives the significant hazard(s), the significant hazardous situation(s) and hazardous event(s)
covered by this document that have been identified by risk assessment as being significant for this type
of machine, and which require specific action by the designer or manufacturer to eliminate or reduce
the risk.
Attention is drawn to the necessity to verify that the safety requirements specified in this document
apply to each significant hazard presented by a given machine and to validate that the risk assessment
is complete.
Table 1 — List of significant hazards associated with machines for loading, mixing and/or
chopping and distributing silage and/or other feedstuffs
No. Hazard, hazardous Origin Clause/subclause Clause/subclause
situation or hazardous of EN of this document
event ISO 4254-1:2015
1.1 Crushing hazard Contact with unguarded 4.9.1, 4.17, 5.1.4, 5.2, 5.4.1, 5.4.2
working tools, 6.4.1
unexpected opening of
the loading door
1.2 Shearing hazard Contact with unguarded 4.11, 5.1.4 5.2, 5.4.2, 5.6.1,
working tools, 5.6.5, 5.7
unexpected opening of
the loading door
1.3 Cutting or severing hazard Contact with unguarded 4.1.1, 4.1.2, 4.9.1, 5.2, 5.4.1, 5.5, 5.6.1,
working tools 5.6.5
4.17, 6.4.1
5.7.1
1.4 Entanglement hazard Contact with unguarded 4.1.1, 4.1.2, 4.9.1, 5.1, 5.2, 5.4.1, 5.5,
working tools checking of
4.17, 6.4.1 5.6.1, 5.6.2, 5.7.1,
the mixing, contact with
5.7.2, 5.8
the PTO drive shaft
1.5 Drawing-in or trapping Contact with unguarded - 5.2, 5.4.1, 5.6.1,
hazard working tools, contact 5.6.2,
with the PTO drive shaft,
5.7, 5.8
checking of the mixing
1.6 Impact hazard Contact with unguarded 4.1.1, 4.1.2, 4.11, 5.2, 5.4.1, 5.4.2
working tools,
4.9.1, 4.17, 6.4.1
unexpected opening of
the loading door, lifting of
the drawbar
1.7 Stabbing or puncture hazard Contact of fingers with - 5.7.1
unguarded working tools,
unexpected opening of
the loading door
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No. Hazard, hazardous Origin Clause/subclause Clause/subclause
situation or hazardous of EN of this document
event ISO 4254-1:2015
1.9 High pressure fluid injection Hazardous location of 4.13 7.1 o), 7.2
or ejection hazard pressurized hoses
2.2 Contact of persons with Contact of the loading - 7.1 f), 7.2
parts which have become device with overhead
live under faulty conditions power lines
(indirect contact)
2.3 Approach to live parts under Contact of the loading 8.1, 8.2 7.1 f), 7.2
high voltage device with overhead
power lines
2.5 Thermal radiation or other Hazardous location of 4.12, 5.3 -
phenomena such as the cables
projection of molten
particles and chemical
effects from short circuits,
overloads, etc.
4.1 Hearing loss (deafness), Hearing damage due to 4.3, Annex B 5.9, 7.1
other physiological the working machine
disorders (e.g. loss of
balance, loss of awareness)
5.2 Whole body vibration, Seat insufficiently 4.4 -
particularly when combines dampened
with poor postures
7.1 Hazards from contact with Leakage from the fuel 4.15, 5.4, 8.1, 8.2 -
or inhalation of harmful tank or from the engine
fluids, gases, mists, fumes,
and dusts
7.2 Fire or explosion hazard Leakage from the engine 4.15, 8.1, 8.2 -
7.3 Biological or microbiological Leakage from the fuel 5.4 -
(viral or bacterial) hazards tank
8.1 Unhealthy postures or Unergonomic design of 4.5.3, 4.7.1, 4.8.3, -
excessive efforts operator's station
4.9.1, 4.17
8.2 Inadequate consideration of Inability to check of the 4.7.1, 4.8.3, 5.1.4, 5.6, 5.7
hand-arm or foot-leg mixing
5.1.1, 5.1.7
anatomy
8.6 Human error, human Misunderstanding of the 4.5, 5.1.3, 8.1, 8.2 7.1.c), g), h), i), p),
behaviour meaning of controls 7.2
8.7 Inadequate design, location Manual controls located 4.5, 5.1.3, 8.1, 8.2 7.1 c), g), h), i), p),
or identification of manual in an unusual way 7.2
controls
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No. Hazard, hazardous Origin Clause/subclause Clause/subclause
situation or hazardous of EN of this document
event ISO 4254-1:2015
10.2 Restoration of energy Activation of the cutting 4.5, 5.1.3 -
supply after an interruption and loading tools while
the operator is standing
around
13 Failure of power supply Unexpected opening of - 5.4.2, 5.5
the loading door,
inadvertent lowering of
the cutting and loading
tools
15 Errors of fitting Confusion in the 6.5, 8.1, 8.2 7.1 k), 7.2
connection of hoses or
electrical cables
17 Falling or ejected objects or Rupture of pressurized 4.13 7.1, 7.2
fluids hoses
18 Loss of stability/overturning Incorrect location of 5.2, 6.2 7.1 m)
of machinery attachments for towing,
tie-down points or
application points for
jacks
19 Slip, trip and fall of persons Inability to check of the 4.7.1, 4.7.2, 4.8.3, 5.6.2, 5.6.3, 7.1
(relating to machinery) mixing, accumulation of
4.15, 5.4
material on the top of the
machine
20.1 Movement when starting the Unexpected opening of 5.1.8 5.4.2, 7.1 m)
engine the loading door
21.5 Insufficient visibility from Incorrect location of the - 5.2, 5.3, 6.1, 7.1 b), t)
the work positions manual controls,
obstruction around the
working area
21.10 Insufficient means for Checking of the mixing 5.1.7 5.6.2
evacuation/emergency exit
22.1 Inadequate location of Manual controls located 4.5, 5.1.3 7.1 c), g), h), i), p),
manual controls in an unusual way 7.2
22.2 Inadequate design of manual Manual controls located 4.5, 5.1.3 7.1 c), g), h), i), p),
controls and their mode of in an unusual way 7.2
operation
24.3 Hazards from coupling and Incorrect location of 5.2.1, 6.3 7.1 s), 7.2
towing attachments for towing
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5 Safety requirements and/or protective measures
5.1 General
Machinery shall comply with the safety requirements and/or protective measures of this clause. In
addition, the machine shall be designed according to the principles of relevant parts of EN ISO 12100
for hazards relevant but not significant, which are not dealt with by this document (e.g. burns and
scalds).
Unless otherwise specified in this standard, the machines shall comply with the requirements of
EN ISO 4254-1:2015 and with EN ISO 13857:2008, Table 1, Table 3, Table 4 and Table 6 as appropriate.
5.2 Location of the manual controls
5.2.1 General
It shall not be possible for the operator, when inside the mixing and/or chopping compartment(s), to
reach the manual controls.
The control system shall be such that it is not possible for the operator to reach unguarded mobile
working tools while actuating the control. This requirement is considered met for mounted machines
when the distance between the manual controls and any unguarded mobile working tools in operation
is more than 850 mm.
For mounted, semi-mounted or trailed machines, when controls require actuation from the driver's
station, these controls shall be designed so that the operator can reach them, for example by means of
an adjustable position of the controls or controls that can be situated inside the tractor.
Verification: shall be by measurement and inspection.
Where there is more than one control position, the control system shall be designed in such a way that
the use of one of them precludes the use of the others, except for stop controls and
...
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