Continuous handling equipment and systems - Safety requirements for fixed belt conveyors for bulk materials

1.1   This document deals with the technical requirements for stationery belt conveyors and systems as defined in 3.1 to 3.2.4, for designed for continuously conveying loose bulk materials. The covered phases of life cycle are design, setting, operation, maintenance and cleaning. Requirements for electromagnetic compatibility are also covered.
1.2   This document does not give the additional requirements for:
a)   use in coal mining and open cast lignite mining;
b)   use for man-riding;
c)   floating, dredging and ship mounted structures supporting the conveyor;
d)   biological and chemical hazards resulting from handling foodstuffs or pharmaceuticals;
e)   the design of the supporting structure which is not part of a conveyor;
f)   the effects of wind;
g)   hazards resulting from handling specific hazardous materials, (e.g. explosives, radiating material);
h)   hazards resulting from contact with or inhalation of harmful fluids, gases, mists, fumes or dust;
i)   biological and micro-biological (viral or bacterial) hazards;
j)   hazards due to heat radiation from the materials handled;
k)   hazards caused by operation in electromagnetic fields outside the range of EN 61000-6-2:2005;
l)   hazards caused by operation subject to special regulations (e.g. explosive atmospheres);
m)   hazards caused by the use of ionising radiation sources;
n)   conveyors using a moving belt with other than a continuous rubber or polymeric surface for the conveying medium.
The safety requirements of this standard apply to equipment and systems placed on the market after the date of publication of this standard.
NOTE   Directive 2014/34/EC concerning equipment and protective systems intended for use in potentially explosive atmospheres can be applicable to the type of machine or equipment covered by this European Standard. The present standard is not intended to provide means of complying completely with the essential health and safety requirements of Directive 2014/34/EC.

Stetigförderer und Systeme - SicherheitsAnforderungen an ortsfeste Gurtförderer für Schüttgut

1.1 Dieses Dokument behandelt die technischen Anforderungen an ortsfeste Gurtförderer und Systeme nach 3.1 bis 3.2.4, die für die stetige Förderung von Schüttgut ausgelegt sind. Die behandelten Phasen der Lebensdauer umfassen die Gestaltung, die Einrichtung, den Betrieb, die Instandhaltung und die Reinigung. Die Anforderungen an die elektromagnetische Verträglichkeit werden ebenfalls behandelt.
1.2   Dieses Dokument legt keine zusätzlichen Anforderungen fest für:
a)   den Einsatz im untertägigen Kohlebergbau und Braunkohletagebau;
b)   den Einsatz für den Personentransport;
c)   schwimmende, baggernde und schiffsmontierte Strukturen, die den Förderer stützen;
d)   biologische und chemische Gefahren durch die Handhabung von Lebensmitteln und Pharmazeutika;
e)   die Gestaltung des Tragwerks, das nicht Teil eines Förderers ist;
f)   Einwirkungen durch Wind;
g)   Gefährdungen, die sich aus der Handhabung von speziell gefährlichen Materialien (z. B. Sprengstoffe, strahlendes Material) ergeben;
h)   Gefährdungen, die sich durch den Kontakt mit oder das Einatmen von gefährdenden Flüssigkeiten, Gasen, Nebeln, Dämpfen und Stäuben ergeben;
i)   biologische und mikrobiologische Gefährdungen (durch Viren oder Bakterien);
j)   Gefährdungen aufgrund der Hitzestrahlung der gehandhabten Materialien;
k)   Gefährdungen, verursacht durch den Betrieb in elektromagnetischen Feldern außerhalb des Bereichs der EN 61000-6-2:2005;
l)   Gefährdungen, verursacht durch einen besonderen Anforderungen unterliegenden Betrieb (z. B. explosive Atmosphären);
m)   Gefährdungen, verursacht durch ionisierende Strahlungsquellen;
n)   Förderer, die einen beweglichen Gurt als Fördermittel verwenden, dessen gesamte Oberfläche nicht gänzlich aus Gummi oder Polymeren besteht.
Diese Sicherheitsanforderungen dieser Norm gelten für Einrichtungen und Systeme, die nach dem Erscheinungsdatum dieser Norm auf den Markt gebracht wurden.
ANMERKUNG   Die Richtlinie 2014/34/EG für Einrichtungen und Schutzsysteme, die für den Gebrauch in explosionsgefährdeten Bereichen vorgesehen sind, kann sich auf Maschinen und Einrichtungen beziehen, die von dieser Europäischen Norm abgedeckt werden. Es ist nicht vorgesehen, dass die vorliegende Norm vollständig mit den Gesundheits- und Sicherheitsanforderungen der Richtlinie 2014/34/EG übereinstimmen muss.

Équipements et systèmes de manutention continue - Prescriptions de sécurité pour les transporteurs à courroie fixes pour produits en vrac

1.1   Le présent document traite des prescriptions techniques pour les convoyeurs stationnaires à bande et les systèmes tels que définis de 3.1 à 3.2.4, conçus pour le transport en continu de matériaux en vrac. Les phases couvertes du cycle de vie sont la conception, le réglage, l'exploitation, la maintenance et le nettoyage. Les exigences de compatibilité électromagnétique sont également couvertes.
1.2   Le présent document ne donne pas de prescriptions supplémentaires pour:
a)   l'utilisation dans les mines de charbon et les mines de lignite à ciel ouvert;
b)   l'utilisation pour le transport de personnes;
c)   le matériel flottant, le matériel de dragage ou le matériel monté sur un bateau ;
d)   les situations dangereuses d'ordre biologiques et chimiques résultant de la manipulation de denrées alimentaires ou de produits pharmaceutiques;
e)   la conception de la structure d'appui qui ne fait pas partie du convoyeur;
f)   les effets du vent;
g)   les situations dangereuses dues à la manutentions de produits dangereux spécifiques (par exemple explosifs, matériau irradiant);
h)   les situations dangereuses résultant du contact ou de l'inhalation de fluides, gaz, brouillards, fumées ou poussières nocifs;
i)   les situations dangereuses dues à la chaleur rayonnée par les produits manutentionnés;
j)   les situations dangereuses dues à un fonctionnement dans des champs électromagnétiques ne relevant pas du domaine d’application de l’EN 61000-6-2:2005;
k)   les situations dangereuses dues à une utilisation soumise à des règlementations spéciales (par exemple atmosphères explosibles);
l)   les situations dangereuses dues à l'utilisation de sources de rayonnement ionisant;
m)   les convoyeurs utilisant une bande transporteuse avec une surface autre que du caoutchouc ou un polymère pour le milieu de transport continu;
Les prescriptions de sécurité de la présente norme s’appliquent aux équipements et systèmes mis sur le marché après sa date de publication.
NOTE   La Directive 2014/34/CE relative aux appareils et systèmes de protection destinés à être utilisés en atmosphères explosibles peut s'appliquer au type de machine ou équipement couverts par cette norme européenne. La présente norme n'est pas destinée à fournir un moyen de satisfaire aux exigences essentielles de Santé et de Sécurité de la Directive 2014/34/CE.

Naprave in sistemi za kontinuirni transport - Varnostne zahteve za opremo za kontinuirni transport sipkih materialov na nepomičnih ogrodjih

General Information

Status
Published
Public Enquiry End Date
19-Oct-2018
Publication Date
11-Nov-2021
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
13-Oct-2021
Due Date
18-Dec-2021
Completion Date
12-Nov-2021

RELATIONS

Buy Standard

Standard
SIST EN 620:2021
English language
61 pages
sale 10% off
Preview
sale 10% off
Preview
e-Library read for
1 day
Draft
oSIST prEN 620:2018
English language
57 pages
sale 10% off
Preview
sale 10% off
Preview
e-Library read for
1 day

Standards Content (sample)

SLOVENSKI STANDARD
SIST EN 620:2021
01-december-2021
Nadomešča:
SIST EN 620:2003+A1:2011
Naprave in sistemi za kontinuirni transport - Varnostne zahteve za opremo za
kontinuirni transport sipkih materialov na nepomičnih ogrodjih
Continuous handling equipment and systems - Safety requirements for fixed belt
conveyors for bulk materials

Stetigförderer und Systeme - SicherheitsAnforderungen an ortsfeste Gurtförderer für

Schüttgut

Équipements et systèmes de manutention continue - Prescriptions de sécurité pour les

transporteurs à courroie fixes pour produits en vrac
Ta slovenski standard je istoveten z: EN 620:2021
ICS:
53.040.10 Transporterji Conveyors
SIST EN 620:2021 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 620:2021
---------------------- Page: 2 ----------------------
SIST EN 620:2021
EN 620
EUROPEAN STANDARD
NORME EUROPÉENNE
October 2021
EUROPÄISCHE NORM
ICS 53.040.10 Supersedes EN 620:2002+A1:2010
English Version
Continuous handling equipment and systems - Safety
requirements for fixed belt conveyors for bulk materials

Équipements et systèmes de manutention continue - Stetigförderer und Systeme - Sicherheits-

Prescriptions de sécurité pour les transporteurs à Anforderungen an ortsfeste Gurtförderer für Schüttgut

courroie fixes pour produits en vrac
This European Standard was approved by CEN on 18 July 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 620:2021 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN 620:2021
EN 620:2021 (E)
Contents Page

European foreword ....................................................................................................................................................... 4

Introduction .................................................................................................................................................................... 6

1 Scope .................................................................................................................................................................... 7

2 Normative references .................................................................................................................................... 8

3 Terms and definitions ................................................................................................................................ 10

4 Safety requirements and /or measures for belt conveyors .......................................................... 16

4.1 General ............................................................................................................................................................. 16

4.1.1 Introduction ................................................................................................................................................... 16

4.1.2 Zone concept .................................................................................................................................................. 16

4.1.3 Requirements for restricted zone .......................................................................................................... 17

4.2 Requirements for guards .......................................................................................................................... 17

4.2.1 General ............................................................................................................................................................. 17

4.2.2 Fixed guard ..................................................................................................................................................... 18

4.2.3 Interlocking guard ....................................................................................................................................... 21

4.2.4 Inspection cover ........................................................................................................................................... 21

4.2.5 Nip guard ......................................................................................................................................................... 21

4.3 Measures for protection against mechanical hazards .................................................................... 24

4.3.1 General requirements ................................................................................................................................ 24

4.3.2 Crushing and shearing hazards ............................................................................................................... 24

4.3.3 Control cabin .................................................................................................................................................. 27

4.3.4 Entanglement, drawing-in and trapping hazards ............................................................................ 27

4.3.5 Hazards arising from ejection of parts (of machinery or handled materials) ....................... 30

4.3.6 Means of access ............................................................................................................................................. 31

4.4 Measures for protection against electrical hazards ........................................................................ 34

4.4.1 General ............................................................................................................................................................. 34

4.4.2 Environment .................................................................................................................................................. 34

4.4.3 Electrostatic charges ................................................................................................................................... 34

4.5 Measures for protection against hydraulic hazards ........................................................................ 34

4.6 Measures for protection against pneumatic hazards...................................................................... 34

4.7 Measures for protection against thermal hazards ........................................................................... 35

4.7.1 Burns and scalds by a possible contact of persons with parts or materials at high

temperature ................................................................................................................................................... 35

4.7.2 Health damaging effects by hot or cold work environment ......................................................... 35

4.8 Measures for protection against fire and explosion hazards ....................................................... 35

4.8.1 Belt friction ..................................................................................................................................................... 35

4.8.2 Transported material ................................................................................................................................. 35

4.9 Neglected ergonomic principles in machine design (mismatch of machinery with

human characteristics and abilities) .................................................................................................... 36

4.9.1 Unhealthy postures or excessive efforts .............................................................................................. 36

4.9.2 Isolated work places ................................................................................................................................... 37

4.10 Measures in case of failure of energy supply and other functional disorders ....................... 37

4.10.1 Uncontrolled motion ................................................................................................................................... 37

4.10.2 Failure or malfunction of safety related parts of control systems ............................................. 37

4.11 Measures for protection against hazards arising during inspection, maintenance and

cleaning ............................................................................................................................................................ 40

---------------------- Page: 4 ----------------------
SIST EN 620:2021
EN 620:2021 (E)

4.12 Noise reduction at design stage ............................................................................................................... 40

5 Verification of safety requirements and/or measures ................................................................... 41

5.1 General ............................................................................................................................................................. 41

5.2 Electrical equipment ................................................................................................................................... 43

5.3 Fire or explosion hazards .......................................................................................................................... 43

6 Information for use ...................................................................................................................................... 43

6.1 Instruction handbook ................................................................................................................................. 43

6.1.1 General ............................................................................................................................................................. 43

6.1.2 Instructions for the installation of the equipment ........................................................................... 44

6.1.3 Instructions for the operation of the equipment .............................................................................. 44

6.1.4 Noise declaration .......................................................................................................................................... 45

6.1.5 Instructions for maintenance ................................................................................................................... 45

6.1.6 Training ............................................................................................................................................................ 47

6.1.7 Decommissioning and dismantling ........................................................................................................ 47

6.2 Marking ............................................................................................................................................................ 47

Annex A (informative) List of significant hazards ......................................................................................... 48

A.1 General ............................................................................................................................................................. 48

A.2 Mechanical hazards ..................................................................................................................................... 48

A.3 Electrical hazards ......................................................................................................................................... 49

A.4 Thermal hazards ........................................................................................................................................... 50

A.5 Fire or explosion hazards .......................................................................................................................... 50

A.6 Hazards generated by neglected ergonomic principals in machine design ............................ 50

A.7 Hazards arising from failure of the energy supply and other functional disorders............. 51

A.8 Hazards caused by the presence of stored energy ........................................................................... 51

A.9 Hazards arising during inspection, maintenance and cleaning ................................................... 51

Annex B (normative) Specification or required performance level (PLr) ............................................ 52

Annex C (normative) Noise Test Code ................................................................................................................ 54

C.1 General ............................................................................................................................................................. 54

C.2 Operating conditions during measurements ..................................................................................... 54

C.3 Determination of A-weighted emission sound pressure level ..................................................... 54

C.4 Measurement positions .............................................................................................................................. 54

C.5 Information to be recorded ...................................................................................................................... 55

C.6 Information to be reported ....................................................................................................................... 55

C.7 Noise emission declaration ....................................................................................................................... 55

C.8 Example of noise declaration ................................................................................................................... 56

Annex ZA (informative) Relationship between this European Standard and the Essential

Requirements of EU Directive 2006/42/EC aimed to be covered............................................... 57

Bibliography ................................................................................................................................................................. 60

---------------------- Page: 5 ----------------------
SIST EN 620:2021
EN 620:2021 (E)
European foreword

This document (EN 620:2021) has been prepared by Technical Committee CEN/TC 148 “Continuous

handling equipment and systems - Safety”, 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 April 2022 and conflicting national standards shall be

withdrawn at the latest by April 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 will supersede EN 620:2002+A1:2010.
The main changes with respect to EN 620:2002+A1:2010 are as follows:
— Scope was clarified;
— Normative references were updated;
— Definitions were added;
— List of significant hazards updated and removed in an informative Annex;
— Overall safety requirements was updated;
— New normative annex relatin to specification of performance level;
— New requirements relating to noise reduction;
— New Annex ZA in line with template of Machinery harmonized standard;
— De-harmonization to EMC regulation.

This document is part of a series of five standards the titles of which are given below:

— EN 617 “Continuous handling equipment and systems — Safety and EMC requirements for the

equipment for the storage of bulk materials in silos, bunkers, bins and hoppers”;

— EN 618 “Continuous handling equipment and systems — Safety and EMC requirements for equipment

for mechanical handling of bulk materials except fixed belt conveyors”;

— EN 619 ”Continuous handling equipment and systems — Safety requirements for equipment for

mechanical handling of unit loads”;

— EN 620 “Continuous handling equipment and systems — Safety requirements for fixed belt conveyors

for bulk materials”;

— EN 741 “Continuous handling equipment and systems — Safety requirements for systems and their

components for pneumatic handling of bulk materials”.

This document has been prepared under a Standardization Request given to CEN by the European

Commission and the European Free Trade Association, and supports essential requirements of EU

Directive(s) / Regulation(s).
---------------------- Page: 6 ----------------------
SIST EN 620:2021
EN 620:2021 (E)

For relationship with EU Directive(s) / Regulation(s), see informative Annex ZA, which is an integral part

of this document.

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.
---------------------- Page: 7 ----------------------
SIST EN 620:2021
EN 620:2021 (E)
Introduction
This European Standard is a type C standard as stated in EN ISO 12100:2010.

The products concerned and the extent to which hazards are covered are indicated in the scope of this

document.
While producing this document it was assumed that:

— For specific purpose machinery, clarifications occur between the manufacturer and the purchaser

concerning particular conditions for the operation and location of the machinery (typically

considering adjacent machinery, means of access, guarding concept, control systems, etc) related to

health and safety. An agreement is needed between the manufacturer and purchaser about belt

material, considering specific risk e.g. fire and the establishment of zones;
— only suitably trained persons operate this machinery;

— the machinery will be kept in good repair and working order, in accordance with the manufacturer's

instructions, to retain specified health and safety characteristics throughout its working life;

— the place of installation is adequately illuminated;
— the place of installation will allow safe operation of the machinery;

— by design of the load bearing elements, the safe operation of the system and components is ensured

for loading ranging from zero to 100 % of the rated capacities and during testing;

— all parts of the machinery without specific requirements, will be:

a) made from materials of adequate strength and durability and of suitable quality for their

intended purpose;

b) designed in accordance with the usual engineering practice and engineering codes, taking

account of all failure modes and incorporating appropriate safety factors;

— the establishment of the different zones is defined between the user and the manufacturer.

---------------------- Page: 8 ----------------------
SIST EN 620:2021
EN 620:2021 (E)
1 Scope

1.1 This document deals with the technical requirements for stationary belt conveyors and systems as

defined in 3.1 to 3.2.4, designed for continuously conveying loose bulk materials. The covered phases of

life cycle are design, setting, operation, maintenance and cleaning.
1.2 This document does not cover:
a) use in coal mining and open cast lignite mining;
b) use for man-riding;
c) floating, dredging and ship mounted structures supporting the conveyor;

d) biological and chemical hazards resulting from handling foodstuffs or pharmaceuticals;

e) the design of the supporting structure which is not part of a conveyor;
f) the effects of wind;

g) hazards resulting from handling specific hazardous materials, (e.g. explosives, radiating material);

h) hazards resulting from contact with or inhalation of harmful fluids, gases, mists, fumes or dust;

i) biological and micro-biological (viral or bacterial) hazards;
j) hazards caused by the use of ionising radiation sources;

k) conveyors fitted with a moving belt with other than a continuous rubber or polymeric surface for the

conveying medium;

l) hazards associated with the integration of belt conveyors with other machinery;

The safety requirements of this document apply to equipment and systems placed on the market after

the date of publication of this document.

NOTE Directive 2014/34/EC concerning equipment and protective systems intended for operation in

potentially explosive atmospheres can be applicable to the type of machine or equipment covered by this European

Standard. The present document is not intended to provide means of complying completely with the essential health

and safety requirements of Directive 2014/34/EC.
---------------------- Page: 9 ----------------------
SIST EN 620:2021
EN 620:2021 (E)
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 842:1996+A1:2008, Safety of machinery — Visual danger signals — General requirements, design and

testing

EN 1127-1:2019, Explosive atmospheres — Explosion prevention and protection — Part 1: Basic concepts

and methodology

EN 12600:2002, Glass in building — Pendulum test — Impact test method and classification for flat glass

EN 14492-1:2006+A1:2009, Cranes — Power driven winches and hoists — Part 1: Power driven winches

EN 60529:1991 , Degrees of protection provided by enclosures (IP Code) (IEC 60529:1989)

EN 60204-1:2018, Safety of machinery — Electrical equipment of machines — Part 1: General requirements

EN IEC 60204-11:2019, Safety of machinery — Electrical equipment of machines — Part 11: Requirements

for equipment for voltages above 1 000 V AC or 1 500 V DC and not exceeding 36 kV

EN 60947-5-1:2017, Low-voltage switchgear and controlgear — Part 5-1: Control circuit devices and

switching elements — Electromechanical control circuit devices (IEC 60947-5-1:2017)

EN 60947-5-5:1997 , Low-voltage switchgear and controlgear — Part 5-5: Control circuit devices and

switching elements — Electrical emergency stop device with mechanical latching function (IEC 60947-5-

5:1997)

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 IEC 61496-1:2020, Safety of machinery — Electro-sensitive protective equipment — Part 1: General

requirements and tests (IEC 61496-1:2020)

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 7731:2008, Ergonomics — Danger signals for public and work areas — Auditory danger signals

(ISO 7731:2003)
As impacted by EN 60529:1991/A1:2000 and EN 60529:1991/A2:2013.

As impacted by EN 60947-5-5:1997/A1:2005, EN 60947-5-5:1997/A11:2013 and EN 60947-5-5:1997/A2:2017.

---------------------- Page: 10 ----------------------
SIST EN 620:2021
EN 620:2021 (E)

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 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 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)

EN ISO 13854:2019, Safety of machinery — Minimum gaps to avoid crushing of parts of the human body

(ISO 13854:2017)

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 13856-2:2013, Safety of machinery — Pressure-sensitive protective devices — Part 2: General

principles for design and testing of pressure-sensitive edges and pressure-sensitive bars (ISO 13856-2:2013)

EN ISO 13857:2019, Safety of machinery — Safety distances to prevent hazard zones being reached by

upper and lower limbs (ISO 13857:2019)

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 19353:2019, Safety of machinery — Fire prevention and fire protection (ISO 19353:2019)

ISO 16625:2013, Cranes and hoists — Selection of wire ropes, drums and sheaves
---------------------- Page: 11 ----------------------
SIST EN 620:2021
EN 620:2021 (E)
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
3.1
conveyor system
number of linked conveyors with their ancillary equipment
3.2
belt conveyor
conveyor with an endless belt acting as a carrying and traction element

Note 1 to entry: Some shortened form of belt conveyor, normally running at slow speed, designed to extract or

control the rate of flow of bulk materials from a feed hopper (3.3.1), is called a belt feeder.

3.2.1
troughed belt conveyor

belt conveyor (3.2) where the support idlers (3.4.4) or suitable flat sliding surfaces which impart a

transverse curvature to the belt less than 45°

Note 1 to entry: If the angle between the support idlers (3.4.4) and the horizontal plane is more than 45°, a

troughed belt conveyor can be called a deep troughed belt conveyor.
3.2.2
pipe belt conveyor
pipe conveyor
belt conveyor (3.2) where the belt forms a pipe
3.2.3
walled belt conveyor

belt conveyor (3.2) where the belt has its flat carrying face extended to form side walls of limited height

3.2.4
radial conveyor

belt conveyor (3.2) which is pivoted around a fixed end and may be mounted on wheels or skids at a point

along its length, which permits movement in a horizontal arc
3.3
ancillary equipment
3.3.1
feed hopper
hopper
device at the loading point of the belt conveyor (3.2) for receiving material
Note 1 to entry: See Figure 1, key 1.
---------------------- Page: 12 ----------------------
SIST EN 620:2021
EN 620:2021 (E)
3.3.2
tripper

device usually comprising two or more pulleys (3.4.7), mounted either in a fixed position or on a travelling

carriage, for
...

SLOVENSKI STANDARD
oSIST prEN 620:2018
01-oktober-2018
1DSUDYHLQVLVWHPL]DNRQWLQXLUQLWUDQVSRUW=DKWHYH]DYDUQRVWLQ]D
HOHNWURPDJQHWQR]GUXåOMLYRVWQDSUDYVLVWHPRYLQRSUHPH]DNRQWLQXLUQLWUDQVSRUW
VLSNLKPDWHULDORYQDQHSRPLþQLKRJURGMLK

Continuous handling equipment and systems - Safety and EMC requirements for fixed

belt conveyors for bulk materials
Stetigförderer und Systeme - Sicherheits- und EMV-Anforderungen an ortsfeste
Gurtförderer für Schüttgut

Équipements et systèmes de manutention continue - Prescriptions de sécurité et de

CEM pour les transporteurs à courroie fixes pour produits en vrac
Ta slovenski standard je istoveten z: prEN 620
ICS:
33.100.01 Elektromagnetna združljivost Electromagnetic compatibility
na splošno in general
53.040.10 Transporterji Conveyors
oSIST prEN 620:2018 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN 620:2018
---------------------- Page: 2 ----------------------
oSIST prEN 620:2018
DRAFT
EUROPEAN STANDARD
prEN 620
NORME EUROPÉENNE
EUROPÄISCHE NORM
August 2018
ICS 53.040.10 Will supersede EN 620:2002+A1:2010
English Version
Continuous handling equipment and systems - Safety and
EMC requirements for fixed belt conveyors for bulk
materials

Équipements et systèmes de manutention continue - Stetigförderer und Systeme - Sicherheits- und EMV-

Prescriptions de sécurité et de CEM pour les Anforderungen an ortsfeste Gurtförderer für Schüttgut

transporteurs à courroie fixes pour produits en vrac

This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee

CEN/TC 148.

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 620:2018 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
oSIST prEN 620:2018
prEN 620:2018 (E)
Contents Page

European foreword .................................................................................................................................. 5

Introduction ............................................................................................................................................... 6

1 Scope ............................................................................................................................................... 7

2 Normative references ............................................................................................................... 7

3 Terms and definitions ........................................................................................................... 10

4 List of significant hazards ..................................................................................................... 16

4.1 General ........................................................................................................................................ 16

4.2 Mechanical hazards ................................................................................................................ 16

4.2.1 General ........................................................................................................................................ 16

4.2.2 Crushing and shearing hazards .......................................................................................... 16

4.2.3 Cutting or severing hazards ................................................................................................. 16

4.2.4 Entanglement, drawing-in or trapping hazards ........................................................... 16

4.2.5 Hazards arising from ejection of parts (of machinery or handled materials) .. 17

4.2.6 Slip, trip and fall hazards ...................................................................................................... 17

4.3 Electrical hazards .................................................................................................................... 17

4.3.1 Electrical equipment .............................................................................................................. 17

4.3.2 Hazards due to electromagnetic radiation .................................................................... 17

4.3.3 Electrostatic charges .............................................................................................................. 17

4.4 Thermal hazards ...................................................................................................................... 18

4.4.1 Contact with parts or materials at high temperatures .............................................. 18

4.4.2 Hazards related to temperature ........................................................................................ 18

4.5 Fire or explosion hazards ..................................................................................................... 18

4.6 Hazards generated by neglected ergonomic principals in machine design ....... 18

4.6.1 Unhealthy posture or excessive efforts ........................................................................... 18

4.6.2 Mental overload or underload ............................................................................................ 18

4.7 Hazards arising from failure of energy supply and other functional

disorders .................................................................................................................................... 18

4.7.1 Failure of energy supply ....................................................................................................... 18

4.7.2 Failure or malfunction of safety related equipment, controls, or control

systems ........................................................................................................................................ 18

4.8 Hazards caused by the presence of stored energy ...................................................... 19

4.8.1 Mechanical hazards ................................................................................................................ 19

4.8.2 Hydraulic hazards ................................................................................................................... 19

4.8.3 Pneumatic hazards ................................................................................................................. 19

4.9 Hazards arising during inspection, maintenance and cleaning ............................. 19

5 Safety requirements and /or measures for belt conveyors ..................................... 19

5.1 General ........................................................................................................................................ 19

5.1.0 General ........................................................................................................................................ 19

5.1.1 Requirements for guards ...................................................................................................... 21

5.1.2 Fixed guards .............................................................................................................................. 21

5.1.3 Interlocking guards ................................................................................................................ 23

5.1.4 Enclosing guards ...................................................................................................................... 23

5.1.5 Distance guards ........................................................................................................................ 25

5.1.6 Nip guards .................................................................................................................................. 25

5.1.7 Inspection covers .................................................................................................................... 26

5.2 Measures for protection against mechanical hazards ............................................... 27

---------------------- Page: 4 ----------------------
oSIST prEN 620:2018
prEN 620:2018 (E)

5.2.1 General requirements ........................................................................................................... 27

5.2.2 Crushing and shearing hazards .......................................................................................... 27

5.2.3 Cutting or severing hazards ................................................................................................ 29

5.2.4 Entanglement, drawing-in and trapping hazards ....................................................... 29

5.2.5 Ejection of parts (of machinery or handled materials) ............................................. 32

5.2.6 Slip, trip and fall hazards...................................................................................................... 33

5.3 Measures for protection against electrical hazards ................................................... 35

5.3.1 General ........................................................................................................................................ 35

5.3.2 Environment ............................................................................................................................. 35

5.3.3 Electromagnetic compatibility (EMC) .............................................................................. 35

5.3.4 Electrostatic charges .............................................................................................................. 36

5.4 Measures for protection against hydraulic hazards ................................................... 36

5.5 Measures for protection against pneumatic hazards ................................................ 36

5.6 Measures for protection against thermal hazards ...................................................... 36

5.6.1 Burns and scalds by a possible contact of persons with parts or materials at

high temperature .................................................................................................................... 36

5.6.2 Health damaging effects by hot or cold work environment .................................... 36

5.7 Measures for protection against fire and explosion hazards .................................. 37

5.7.1 Belt friction ................................................................................................................................ 37

5.7.2 Transported material ............................................................................................................ 37

5.8 Neglected ergonomic principles in machine design (mismatch of machinery

with human characteristics and abilities) ..................................................................... 38

5.8.1 Unhealthy postures or excessive efforts ......................................................................... 38

5.8.2 Mental overload or underload stress, etc. ...................................................................... 38

5.9 Measures in case of failure of energy supply and other functional disorders .. 38

5.9.1 Uncontrolled motion .............................................................................................................. 38

5.9.2 Failure or malfunction of safety related parts of control systems ........................ 39

5.10 Measures for protection against hazards arising during inspection,

maintenance and cleaning ................................................................................................... 42

6 Verification of safety and EMC requirements and/or measures ........................... 43

6.1 General ........................................................................................................................................ 43

6.2 Special verification ................................................................................................................. 45

6.2.1 EMC Compliance criteria (general aspects) ................................................................... 45

6.2.2 EMC Compliance criteria (safety related aspects) ...................................................... 45

6.2.3 Electrical equipment .............................................................................................................. 46

6.2.4 Fire or explosion hazards..................................................................................................... 46

7 Information for use ................................................................................................................ 46

7.1 Instruction handbook ............................................................................................................ 46

7.1.1 General ........................................................................................................................................ 46

7.1.2 Instructions for the installation of the equipment ..................................................... 46

7.1.3 Instructions for the use of the equipment ...................................................................... 47

7.1.4 Instructions for maintenance ............................................................................................. 48

7.1.5 Training ...................................................................................................................................... 49

7.1.6 Decommissioning and dismantling .................................................................................. 49

7.2 Marking ....................................................................................................................................... 50

Annex A (normative) Specification or required performance level (PLr) ........................ 51

Annex ZA (informative) Relationship between this European Standard and the
Essential Requirements of the EU Directive 2006/42/EC (Machinery Directive)

aimed to be covered ............................................................................................................... 53

---------------------- Page: 5 ----------------------
oSIST prEN 620:2018
prEN 620:2018 (E)
Annex ZB (informative) Relationship between this European Standard and the
essential requirements of Directive 2014/30/EU [2014 OJ L96] aimed to be

covered ........................................................................................................................................ 56

Bibliography ............................................................................................................................................ 57

---------------------- Page: 6 ----------------------
oSIST prEN 620:2018
prEN 620:2018 (E)
European foreword

This document (prEN 620:2018) has been prepared by Technical Committee CEN/TC 148

“Continuous handling equipment and systems - Safety”, the secretariat of which is held by AFNOR.

This document is currently submitted to the CEN Enquiry.
This document will supersede EN 620:2002+A1:2010.

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 Directives.

For relationship with EU Directives, see informative Annexes ZA and ZB, which are integral parts

of this document.

This standard forms part of a series of five standards the titles of which are given below:

— EN 617 “Continuous handling equipment and systems — Safety and EMC requirements for the

equipment for the storage of bulk materials in silos, bunkers, bins and hoppers”;

— EN 618 “Continuous handling equipment and systems — Safety and EMC requirements for

equipment for mechanical handling of bulk materials except fixed belt conveyors”;

— EN 619 ”Continuous handling equipment and systems — Safety and EMC requirements for

equipment for mechanical handling of unit loads”;

— EN 620 “Continuous handling equipment and systems — Safety and EMC requirements for fixed

belt conveyors for bulk materials”;

— EN 741 “Continuous handling equipment and systems — Safety requirements for systems and

their components for pneumatic handling of bulk materials”.
---------------------- Page: 7 ----------------------
oSIST prEN 620:2018
prEN 620:2018 (E)
Introduction
This European Standard is a type C standard as stated in EN ISO 12100.

The products concerned and the extent to which hazards are covered are indicated in the scope of

this standard.
While producing this standard it was assumed that:

— clarifications occur between the manufacturer and the purchaser concerning particular

conditions for the use and places of use for the machinery (typically considering adjacent

machinery, means of access, guarding concept, control systems) related to health and safety.

An agreement is needed between the manufacturer and purchaser about belt material

considering specific risk e.g. fire;
— only suitably trained persons operate this machinery;

— the machinery will be kept in good repair and working order, in accordance with the

manufacturer's instructions, to retain specified health and safety characteristics throughout its

working life;
— the place of installation is adequately lit.
— the place of installation will allow safe use of the machinery;

— by design of the load bearing elements, the safe operation of the system and components is

ensured for loading ranging from zero to 100 % of the rated capacities and during testing;

— all parts of the machinery without specific requirements, will be:

a) made from materials of adequate strength and durability and of suitable quality for their

intended purpose;

b) designed in accordance with the usual engineering practice and engineering codes, taking

account of all failure modes and incorporating appropriate safety factors.
---------------------- Page: 8 ----------------------
oSIST prEN 620:2018
prEN 620:2018 (E)
1 Scope

1.1 This document deals with the technical requirements for stationery belt conveyors and

systems as defined in 3.1 to 3.2.4, for designed for continuously conveying loose bulk materials.

The covered phases of life cycle are design, setting, operation, maintenance and cleaning.

Requirements for electromagnetic compatibility are also covered.
1.2 This document does not give the additional requirements for:
a) use in coal mining and open cast lignite mining;
b) use for man-riding;
c) floating, dredging and ship mounted structures supporting the conveyor;

d) biological and chemical hazards resulting from handling foodstuffs or pharmaceuticals;

e) the design of the supporting structure which is not part of a conveyor;
f) the effects of wind;

g) hazards resulting from handling specific hazardous materials, (e.g. explosives, radiating

material);

h) hazards resulting from contact with or inhalation of harmful fluids, gases, mists, fumes or dust;

i) biological and micro-biological (viral or bacterial) hazards;
j) hazards due to heat radiation from the materials handled;
k) hazards caused by operation in electromagnetic fields outside the range of
EN 61000-6-2:2005;

l) hazards caused by operation subject to special regulations (e.g. explosive atmospheres);

m) hazards caused by the use of ionising radiation sources;

n) conveyors using a moving belt with other than a continuous rubber or polymeric surface for

the conveying medium.

The safety requirements of this standard apply to equipment and systems placed on the market

after the date of publication of this standard.

NOTE Directive 2014/34/EC concerning equipment and protective systems intended for use in

potentially explosive atmospheres can be applicable to the type of machine or equipment covered by this

European Standard. The present standard is not intended to provide means of complying completely with

the essential health and safety requirements of Directive 2014/34/EC.
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.
---------------------- Page: 9 ----------------------
oSIST prEN 620:2018
prEN 620:2018 (E)

EN 349:1993+A1:2008, Safety of machinery — Minimum gaps to avoid crushing of parts of the

human body

EN 842:1996+A1:2008, Safety of machinery — Visual danger signals — General requirements,

design and testing

EN 1063:1999, Glass in building — Security glazing — Testing and classification of resistance against

bullet attack

EN 1127-1:2011, Explosive atmospheres — Explosion prevention and protection — Part 1: Basic

concepts and methodology

EN 61000-6-2:2005, Electromagnetic compatibility (EMC) — Part 6-2: Generic standards —

Immunity for industrial environments

EN 61000-6-3:2007, Electromagnetic compatibility (EMC) — Part 6-3: Generic standards —

Emission standard for residential, commercial and light-industrial environments

EN 60204-1:2006, Safety of machinery — Electrical equipment of machines — Part 1: Specification

for general requirements (IEC 60204-1:2005)

EN 60204-1:2006/A1:2009, Safety of machinery — Electrical equipment of machines — Part 1:

Specification for general requirements (IEC 60204-1:2005/AMD1:2008)

EN 60204-11:2000, Safety of machinery — Electrical equipment of machines — Part 11:

Requirements for HV equipment for voltages above 1000 V a.c. or 1500 V d.c. and not exceeding 36 kV

(IEC 60204-11:2000)

EN 60947-5-1:2004, Low-voltage switchgear and controlgear — Part 5-1: Control circuit devices and

switching elements — Electromechanical control circuit devices (IEC 60947-5-1:2003)

EN 60947-5-1:2004/A1:2009, Low-voltage switchgear and controlgear — Part 5-1: Control circuit

devices and switching elements — Electromechanical control circuit devices
(IEC 60947-5-1:2003/AMD1:2009)

EN 60947-5-5:1997, Low-voltage switchgear and controlgear — Part 5-5: Control circuit devices and

switching elements — Electrical emergency stop device with mechanical latching function

(IEC 60947-5-5:1997)

EN 60947-5-5:1997/A11:2013, Low-voltage switchgear and controlgear — Part 5-5: Control circuit

devices and switching elements — Electrical emergency stop device with mechanical latching function

(IEC 60947-5-5:1997)

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 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)
---------------------- Page: 10 ----------------------
oSIST prEN 620:2018
prEN 620:2018 (E)

EN ISO 7731:2008, Ergonomics — Danger signals for public and work areas — Auditory danger

signals (ISO 7731:2003)

EN ISO 12100:2010, Safety of machinery — General principles for design — Risk assessment and risk

reduction (ISO 12100:2010)

EN 12150-1:2015, Glass in building — Thermally toughened soda lime silicate safety glass — Part 1:

Definition and description

EN ISO 12543-1:1999, Glass in building — Laminated glass and laminated safety glass — Definitions

and descri ption of component parts (ISO 12543-1:2011)

EN ISO 12543-2:2011, Glass in building — Laminated glass and laminated safety glass — Part 2:

Laminated safety glass (ISO 12543-2:2011)

EN ISO 12543-3:2011, Glass in building — Laminated glass and laminated safety glass — Part 3:

Laminated glass (ISO 12543-3:2011)

EN ISO 12543-4:2011, Glass in building — Laminated glass and laminated safety glass — Part 4: Test

methods for durability (ISO 12543-4:2011)

EN ISO 12543-5:2011, Glass in building — Laminated glass and laminated safety glass — Part 5:

Dimensions and edge finishing (ISO 12543-5:2011)

EN ISO 12543-6:2011, Glass in building — Laminated glass and laminated safety glass —

Appearance (ISO 12543-6:2011)

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)

EN ISO 13856-2:2013, Safety of machinery — Pressure-sensitive protective devices — Part 2: General

principles for design and testing of pressure-sensitive edges and pressure-sensitive bars (ISO 13856-

2:2013)

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)
---------------------- Page: 11 ----------------------
oSIST prEN 620:2018
prEN 620:2018 (E)

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)
ISO 16625:2013, Cranes and hoists — Selection of wire ropes, drums and sheaves
3 Terms and definitions

For the purposes of this document, the terms and definitions stated in EN ISO 12100 apply in

addition to those below.

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
3.1
conveyor system
number of linked conveyors with their ancillary equipment
3.2
belt conveyor
conveyor with an endless belt acting as a carrying and traction element

Note 1 to entry: Some shortened form of belt conveyor, normally running at slow speed, designed to

extract or control the rate of flow of bulk materials from hoppers are called belt feeder.

3.2.1
troughed belt conveyor

belt conveyor (3.2) where the support idlers (3.4.4) or suitable flat sliding surfaces which impart a

transverse curvature to the belt less than 45°

Note 1 to entry: If the angle between the support idlers (3.4.4) and the horizontal plane is more than 45°,

a troughed belt conveyor can be called a deep troughed belt conveyor.
3.2.2
pipe belt conveyor
pipe conveyor
belt conveyor (3.2) where the belt forms a pipe
3.2.3
walled belt conveyor

belt conveyor (3.2) where the belt has its flat carrying face extended to form side walls of limited

height
---------------------- Page: 12 ----------------------
oSIST prEN 620:2018
prEN 620:2018 (E)
3.2.4
radial conveyor

belt conveyor (3.2) which is pivoted at one end and may be mounted on wheels or skids at a point

along its length, which permits movement in a horizontal arc
3.3
Ancillary equipment
3.3.1
feed hopper
device at the loading point of the belt conveyor (3.2) for receiving material
Note 1 to entry: See Figure 1, key 1.
3.3.2
tripper

device usually comprising two or more pulleys (3.4.7), mounted either in a fixed position or on a

travelling carriage, for discharging material at selected points or at any point along the length of a

belt conveyor (3.2)
3.3.3
chute
pathway by which materials are guided and fall under gravity
3.4
Other terms and definitions
3.4.1
skirt plate

extension to the feed hopper (3.3.1) or independent plate along the length of the conveyor for

centralising and/or retaining material on the b
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.