EN 14658:2005

SLOVENSKI STANDARD
01-julij-2005
Naprave in sistemi za kontinuirni transport – Splošne varnostne zahteve za
kontinuirne transporterje pri dnevnih kopih rjavega premoga in lignita
Continuous handling equipment and systems - General safety requirements for
continuous handling equipment for opencast lignite mining
Stetigförderer und Systeme - Allgemeine Sicherheits-Anforderungen an Stetigförderer im
Braunkohlentagebau
Equipements et systemes de manutention continue - Prescriptions générales de sécurité
aux équipements de manutention continue utilisés dans les mines de lignite a ciel ouvert
Ta slovenski standard je istoveten z: EN 14658:2005
ICS:
53.040.10 Transporterji Conveyors
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 14658
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2005
ICS 53.040.10
English version
Continuous handling equipment and systems - General safety
requirements for continuous handling equipment for opencast
lignite mining
Equipements et systèmes de manutention continue - Stetigförderer und Systeme - Allgemeine Sicherheits-
Prescriptions générales de sécurité aux équipements de Anforderungen an Stetigförderer im Braunkohlentagebau
manutention continue pour les mines de lignite à ciel ouvert
This European Standard was approved by CEN on 25 March 2005.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2005 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 14658:2005: E
worldwide for CEN national Members.

Contents Page
Foreword .4
Introduction.5
1 Scope.6
2 Normative references.6
3 Terms and definitions .7
4 List of significant hazards.9
4.1 General.9
4.2 Mechanical hazards.9
4.2.2 Entanglement, drawing-in and trapping.9
4.2.3 Stability.9
4.2.4 Hazards generated by fracturing and rupturing during operation .10
4.2.5 Hazards generated by slipping, tripping and falling.10
4.3 Electrical equipment hazards .10
4.4 Thermal hazards.10
4.5 Radiation hazards.10
4.6 Hazards due to handled materials.10
4.7 Hazards due to neglect of ergonomic principles.10
4.8 Hazards due to energy supply failure.11
4.9 Combination of hazards.11
5 Safety requirements and/or measures .11
5.1 General.11
5.2 Mechanical hazards.11
5.2.1 Crushing and shearing hazards.11
5.2.2 Entanglement, drawing-in and trapping.12
5.2.3 Stability.12
5.2.4 Hazards generated by fracturing and rupturing during operation .12
5.2.5 Access .12
5.3 Electrical equipment requirements.14
5.3.1 General.14
5.3.2 Start-up .14
5.3.3 Stopping, restarting after actuation of the stop device .14
5.3.4 Unexpected or unintended start-up.15
5.4 Thermal hazards.16
5.5 Radiation hazards.16
5.6 Hazards due to handled materials.16
5.7 Hazards due to neglect of ergonomic principles.16
5.8 Hazards due to energy supply failure.17
5.9 Combination of hazards.17
6 Verification of compliance with safety requirements and/or measures.17
6.1 General.17
6.2 Documents demonstrating compliance at the design/manufacturing stages.17
6.3 Verification at the place of installation.17
7 Information for use.20
7.1 General.20
7.2 Signals and warning devices.20
7.3 Accompanying documentation (operating instruction handbook) .20
7.3.1 General.20
7.3.2 Information on the continuous handling equipment .20
7.3.3 Instructions for the use of the continuous handling equipment. 21
7.3.4 Instructions for maintenance. 22
7.4 Marking . 22
Annex A (normative) List of hazards according to EN 1050 and reference to the corresponding
safety requirements to be met by continuous handling equipment in opencast lignite
mining . 23
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive 98/37/EC amended by Directive 98/79/EC . 28

Foreword
This European Standard (EN 14658:2005) 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 November 2005, and conflicting national standards shall be withdrawn
at the latest by November 2005.
This document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association (EFTA) and supports essential requirements of EU directives.
For relationship with EU Directives, see informative annex ZA which is an integral part of this standard.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland
and the United Kingdom.
Introduction
This European Standard is a type C standard as defined in EN 12100-1.
The machinery concerned and the hazards covered are indicated in the scope of this European Standard.
In the preparation of this standard, it has been assumed that:
 discussions have taken place between the manufacturer and the user concerning particular conditions for
the use and the site of use of the machinery, with regard to health and safety;
 only experts will operate, clean, check, maintain, inspect and repair the machinery and adapt it to the
changeable requirements of opencast mining;
 the machinery components are kept in a good state of repair and working order so that the required
characteristics related to health and safety are maintained despite wear and tear;
 the place of installation is adequately illuminated;
 the place of installation allows safe use of the machinery;
 the design of the loadbearing elements ensures safe operation of the machinery in the required load
range and during testing;
 all parts of the machinery not subject to specific requirements:
a) are made from materials of adequate strength and durability and of suitable quality;
b) function in a sound manner mechanically;
c) have been designed in accordance with standard engineering practice and calculation methods,
taking account of all failure modes and appropriate safety factors.
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.

1 Scope
This European Standard applies to mechanical continuous handling equipment used in opencast lignite mines
and the particular mechanical continuous handling equipment used:

 to convey lignite or overburden from opencast mines;
 to convey residuals and tailings from lignite processing to opencast mines;
 to convey lignite, overburden or lignite treatment processing residuals and tailings from one opencast
mine to another.
This standard applies to continuous handling equipment operating in delimited site areas that are off-limits to
the public and accessible only to authorized persons.
It specifies the safety requirements for stationary, mobile and shiftable continuous handling equipment
designed to transport bulk goods by continuous movement from a loading point to a discharge point.
The standard considers the significant hazards that arise during the use, movement and shifting of continuous
handling equipment, as well as the measures for eliminating or reducing these hazards provided the
continuous handling equipment is used as intended and the remaining risk is foreseen and taken into account
by the manufacturer. A complete list of all the hazards specified in EN 1050 is given in Annex A (normative).
The requirements of this standard do not apply to equipment and systems manufactured and put into
operation before the publication date of this standard.
This standard does not cover:
a) safety requirements of wireless remote control systems;
b) hazards generated by noise;
c) hazards generated by vibration;
d) hazards generated by explosion;
e) hazards generated by electromagnetic interference (EMC).
NOTE Directive 94/9/EC concerning equipment and protective systems intended for use in potentially explosive
atmospheres and Directive 89/336/EEC.relating to electromagnetic compatibility may be applicable to equipment or
components covered by this European Standard. This Standard is not intended to provide means of complying with the
essential health and safety requirements of the above Directives.
2 Normative references
The following referenced documents are indispensable for the application of this European Standard. For
dated references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
EN 294, Safety of machinery — Safety distances to prevent danger zones being reached by the upper limbs
EN 349, Safety of machinery — Minimum gaps to avoid crushing of parts of the human body
EN 418, Safety of machinery — Emergency stop equipment, functional aspects — Principles for design
EN 457, Safety of machinery — Auditory danger signals — General requirements, design and testing (ISO
7731:1986, modified)
EN 811, Safety of machinery — Safety distances to prevent danger zones being reached by the lower limbs.
EN 953, Safety of machinery — Guards — General requirements for the design and construction of fixed and
movable guards
EN 1037, Safety of machinery — Prevention of unexpected start-up
EN 1050:1996, Safety of machinery — Principles for risk assessment
EN 60204-1, Safety of machinery — Electrical equipment of machines — Part 1: General requirements
(IEC 60204-1:1997)
EN 60204-11, Safety of machinery — Electrical equipment of machines — Part 11: General requirements for
HV equipment for voltages above 1 000 V a.c. or 1 500 V d.c. and not exceeding 36 kV (IEC 60204-11:2000)
EN 60947-5-1, Low-voltage switchgear and controlgear — Part 5-1: Control circuit devices and switching
elements - Electromechanical control circuit devices (IEC 60947-5-1:2003)
EN ISO 12100-1:2003, Safety of machinery — Basic concepts, general principles for design - Part 1:Basic
terminology, methodology (ISO 12100-1:2003)
EN ISO 12100-2:2003, Safety of machinery — Basic concepts, general principles for design - Part 2:
Technical principles (ISO 12100-2:2003)
EN ISO 14122-1, Safety of machinery — Permanent means of access to machinery — Part 1: Choice of a
fixed means of access between two levels (ISO 14122-1:2001)
EN ISO 14122-2, Safety of machinery — Permanent means of access to machinery — Part 2: Working
platforms and walkways (ISO 14122-2:2001)
EN ISO 14122-3, Safety of machinery — Permanent means of access to machinery — Part 3: Stairs,
stepladders and guard-rails (ISO 14122-3:2001)
EN ISO 14122-4, Safety of machinery — Permanent means of access to machines and industrial plants —
Part 4: Fixed ladders (ISO 14122-4: 2004)
3 Terms and definitions
For the purposes of this European Standard, the terms and definitions given in EN ISO 12100-1:2003,
EN ISO 12100-2:2003 and the following terms and definitions apply.
3.1
delimited operating site
area delimited by man-made or natural barriers (embankments, dams, distances, etc.) from public areas and
accessible only to authorized persons
3.2
scraper
device used to distribute the material handled or to remove adherent residual materials
3.3
discharge point
unloading point of continuous handling equipment
3.4
working area
area specified by the manufacturer in which persons work at or run equipment during normal operation
(inspection, maintenance and cleaning are excluded)
3.5
loading point
feeding point for continuous handling equipment
3.6
feed hopper
funnel-shaped material charging device at the feeding point of continuous handling equipment
3.7
stop device
device requiring deliberate actuation to bring continuous handling equipment to a standstill within the scope of
normal operations by means of direct or indirect measures initiated in the control circuit
3.8
belt conveyor
continuous handling equipment with an endless circulating belt (e.g. band) as the carrying and pulling element
3.9
authorized person
person sufficiently trained and instructed to recognize general and specific hazards in the activities assigned
to him/her and able to deal with the hazards in an appropriate manner
3.10
unlocked operating mode
operating mode in which the control link between the drives of different continuous handling equipment units is
inactive or not available
3.11
bulk handling equipment
continuous handling equipment used to mine, dump and reclaim bulk material (bucket wheel excavator,
bucket chain excavator, spreader, etc.)
3.12
chain conveyor
continuous handling equipment with a single or multiple-strand, endless circulating chain for horizontal or
inclined conveying or a combination thereof
3.13
emergency stop device
arrangement of components designed to implement the emergency stop function
3.14
spillage conveyor
continuous handling equipment which collects and transports material spilled from a belt conveyor
3.15
continuous handling equipment
mechanical, hydraulic or pneumatic conveying equipment by means of which material can be moved
continuously via a defined conveying route of limited length from loading point to discharge point, if necessary
at variable speed or cyclically

3.16
idler
roller which supports and/or guides the conveyor belt
3.17
pulley
component of a belt conveyor used for driving or returning the conveyor belt
3.18
interlocking operating mode
operating mode in which drives of different continuous handling equipment units are interlinked by control
circuits
3.19
access
locations or facilities designed and suitable for recurring access to continuous handling equipment for
operating, control, inspection, maintenance and repair purposes and at or via which persons can approach the
continuous handling equipment without particular physical exertion or risk (climbing over/underneath), or move
along, over or under it
4 List of significant hazards
4.1 General
This clause lists all the significant hazards, dangerous situations and circumstances which have been
identified in a risk assessment as relevant for the area defined in the scope and require definition in order to
eliminate or reduce the risk. A complete list of all the hazards mentioned in EN 1050 is given in Annex A. Their
precise descriptions form the basis for the safety precautions stipulated in clause 5.
Before applying this standard, it is necessary to consider the hazards relating to the continuous handling
equipment and its planned use in order to ensure that all hazards have been identified.
4.2 Mechanical hazards
4.2.1 Crushing and shearing
Crushing and shearing may occur where components move towards or closely past one another.
4.2.2 Entanglement, drawing-in and trapping
Hazards generated by the entanglement, drawing-in and trapping of persons, body parts or clothing may arise
in proximity to circulating belts, pulleys, idlers, shafts and couplings, chains and sprockets or other circulating
or rotating components.
Trapping and entanglement hazards occur in particular due to protruding sharp edges, teeth, bolts/screws,
lubricating nipples and other projecting parts or rough surfaces of circulating or rotating components.
Belt conveyors involve drawing-in hazards, in particular at nip points where the belt runs onto pulleys or idlers,
or narrow passages are formed between the belt and fixed parts, and where persons' body parts or limbs may
be drawn in. It shall be remembered that belt conveyors with reversible direction of movement have two in-
running nips at each pulley, idler or narrow passage.
4.2.3 Stability
Stability may be lost due to:
a) overloading;
b) insufficient anchoring;
c) inadmissible shifting and transport operations;

d) wind;
e) derailment.
4.2.4 Hazards generated by fracturing and rupturing during operation
Fracturing of the drum shaft (e.g. following bearing damage) may cause the belt drive to fall off, generating a
hazard for equipment parts or persons.
Rupturing of pressurized hydraulic lines can generate a hazard for equipment parts or persons.
4.2.5 Hazards generated by slipping, tripping and falling
Hazards may occur in the form of slipping, tripping and falling, e.g. as a result of poorly designed walkways.
4.3 Electrical equipment hazards
Hazards may occur due to:
a) direct contact with electrically active parts as a result of damage to insulation or sheathing;
b) faulty disconnection of electrical power;
c) ingress of handled material or moisture into electrical systems.
4.4 Thermal hazards
Hazards may arise due to:
a) heat generated by the movement of defective components of the continuous handling equipment;
b) heat generated by a relative movement (e.g. slip) between components of the continuous handling
equipment;
c) the temperature of the handled material.
4.5 Radiation hazards
Continuous handling equipment may also use radiating devices (e.g. laser measuring instruments, X-ray
equipment or measuring apparatus operating with radioactive beams) for measuring and monitoring purposes
The operation of such devices may generate hazards.
4.6 Hazards due to handled materials
Hazards may arise due to the spillage, caking, ejection or falling-off of handled materials or due to dust.
4.7 Hazards due to neglect of ergonomic principles
The neglect of ergonomic principles may lead to persons having to work in an unhealthy posture at continuous
handling equipment (e.g. in the control station), involving excessive physical effort or mental overload or
underload.
4.8 Hazards due to energy supply failure
Hazards (e.g. unintended movements on inclined continuous handling equipment) may arise due to
a) failure of the energy supply;
b) failure/malfunctioning of the control system.
4.9 Combination of hazards
Hazards may arise from combinations of individual hazards.
5 Safety requirements and/or measures
5.1 General
To apply type B standards EN 294, EN 349 and EN 811, the manufacturer shall carry out a special risk
assessment in accordance with EN 1050, enabling him to select the appropriate design criteria from the above
standards to ensure an adequate level of safety.
NOTE This special risk assessment is part of the general risk assessment relating to hazards not covered by this
standard.
Continuous handling equipment shall comply with the safety requirements and precautions covered in this
clause. In addition, such equipment shall be designed in relation to relevant but non-significant hazards not
covered by this standard, in compliance with the principles of EN ISO 12100-1 and EN ISO 12100-2.
The safety of continuous handling equipment cannot be ensured by technical measures alone. To achieve an
adequate level of safety, therefore, organizational measures also have been implemented. The interaction
between technical and organizational measures shall be taken into account when designing the continuous
handling equipment and be covered in the operating instruction handbook.
5.2 Mechanical hazards
5.2.1 Crushing and shearing hazards
5.2.1.1 Travelling, lifting, slewing and other movement mechanisms
The operating personnel shall be suitably protected from crushing and shearing in the working area, e.g. by
means of guards.
Where drive failure allows unintended movements, automatic arresting devices shall be provided.
Railbound continuous handling equipment and mobile appliances forming part of continuous handling
equipment (e.g. feed hoppers) shall be equipped with anti-drift devices.
Devices shall be installed which prevent overrunning of the end positions of the counter-directionally moving
parts, while allowing for an adequate run-on distance. Where necessary, a second downstream device shall
be installed which, in the event of the first device failing, will safeguard the end positions. Where the risk
potential is high, this second device shall be independently effective, mechanically and electrically.
To re-start a drive that has been deactivated by such a second device, there shall be devices in place which
necessitate a special re-start procedure.
The limit switches shall either allow positive opening operation in accordance with EN 60947-5-1 or shall offer
comparable reliability.
5.2.1.2 Take-up devices for conveyor belts and chain conveyors
a) Power-actuated take-up devices: where a hazard may arise as a result of the tensioning process, the
tension force shall be restricted in such a way that no overloading occurs in any of the power train
elements. In the case of take-up devices operated by remote control or automatically, safety distances
shall be observed in accordance with EN 294 or guards provided in accordance with EN 953.
b) Gravity take-up devices: safeguards with safety distances in accordance with EN 294 shall be provided to
prevent any contact with accessible moving parts of the take-up device.
Access to the space beneath gravity take-up devices is permitted for repair purposes only. If the lowermost
part of the gravity take-up device is accessible, a safeguard is required as protection against the mass falling.
The safeguard shall be effective during access beneath the gravity take-up device.
5.2.2 Entanglement, drawing-in and trapping
In working areas, in-running nips and other points generating hazards shall be fitted with guards in
accordance with EN 953 or the safety distances shall be observed in accordance with EN 294.
5.2.3 Stability
The manufacturer of the continuous handling equipment shall ensure through suitable design that no loss of
stability occurs due to overloading, e.g. as a result of overfilling the conveying element.
To avoid overloading with the handled material, a conveying element cross-section filled to the edges in
addition to an overlying triangular cross-section corresponding to the angle of repose of the handled material
shall be assumed in the design calculation of the continuous handling equipment.
Furthermore, the manufacturer shall provide devices to be able to anchor the continuous handling equipment
or its components so that any unintended movements, e.g. as a result of the forces acting in the conveying
element, are precluded.
Where unintended movements of the continuous handling equipment may occur due to excessively strong
wind, the manufacturer shall provide devices to anchor the continuous handling equipment in place.
In the case of railbound, mobile continuous handling equipment, devices shall be provided which reliably
prevent derailment or the continuous handling equipment shall be designed so that its stability is not impaired
by derailment.
5.2.4 Hazards generated by fracturing and rupturing during operation
Where belt drives arranged on the drum shaft may generate hazards for equipment parts or persons as a
result of the drum shaft fracturing, arresting devices shall be provided which prevent the belt drive from falling
off. The arresting devices shall withstand the dynamic loads occurring during such falling-off, the latter being
dependent on the belt drive mass, height of fall and arresting device rigidity.
Pressure and drain lines of hydraulic cylinders holding continuous handling equipment components in position
during operation shall be provided with a pipe rupture check valve.
5.2.5 Access
5.2.5.1 Access in general
EN ISO 14122-1, EN ISO 14122-2, EN ISO 14122-3 and EN ISO 14122-4 shall generally be applicable.
Hazards generated by slipping, tripping and falling shall be avoided through suitable design of the access
points. In this regard, any edges projecting vertically into, and interfering with, the smoothness of any access
are inadmissible, with the exception of cleats.
It shall be possible to reach or leave control stations without danger at any position of the continuous handling
equipment.
Continuous handling equipment shall be accessible from at least one side.
Drive and return stations shall offer safe access on both sides as well as the possibility, without risk, to change
from one side of the continuous handling equipment to the other where this is necessary for operational
reasons.
If required, continuous handling equipment shall have personnel walkways or passageways that allow safe
crossing over or under the continuous handling equipment.
Locations in the working area which, given the local conditions, present the possibility of unauthorized or
negligent access, shall be secured by means of safeguards or - where impractical - marked by warning signs
or warning paint.
The parts of continuous handling equipment that require maintenance and cleaning shall be accessible
without any risk. Where these activities cannot be carried out from the floor, work stands, stages or platforms
shall be provided.
All lubrication points used more frequently than once a month shall be accessible without removing
safeguards.
Accesses shall be fully illuminated with a minimum illuminance of 20 lux.
5.2.5.2 Walkways, stages, ascents
The standards of the EN ISO 14122 series shall apply, with the following deviations and additional
requirements:
It shall be possible to reach and leave continuous handling equipment operating devices, control stations, and
work, maintenance and repair locations without any risk. Ascents with sufficiently long hand-rails shall be
provided at these locations if they are more than 0,5 m above floor level.
If fixed vertical ladders are used, the minimum width between the uprights shall be 0,35 m. On the access side,
the minimum space between the vertical ladder and surroundings shall be 0,6 m; it may be reduced to 0,4 m
in places. On the opposite side, the minimum space between the vertical ladder and the surroundings shall be
0,15 m.
Passageways with a clear height of less than 2 m shall be provided with padding or guards and additionally
marked by warning paint.
Walkways, ascents, steps or stages shall have a minimum width of 0,5 m. Guard-rails shall be provided with a
toe-guard of at least 0,07 m, deviating from EN ISO 14122.
Guard-rails may be dispensed with where structural components or parts assume their function; in such cases
a hand-rail shall be provided at least on one side.
Openings in the floor shall be safeguarded by means of covers or barriers.
5.3 Electrical equipment requirements
5.3.1 General
The electrical equipment shall conform to the relevant European Standards, e.g. the clauses of EN 60204-1
and EN 60204-11 to be agreed between manufacturer and user, and appropriate national standards.
The continuous handling equipment shall include devices by means of which it can be disconnected from the
power supply. Where installations comprise several continuous handling equipment units, it shall suffice if the
entire installation can be disconnected from the power supply from only one location.
Electrical equipment including cables and electric lines shall be protected by their design or arrangement from
in-service mechanical stress and from the ingress of handled material and moisture.
5.3.2 Start-up
The drives of the excavating and loading elements feeding any individual continuous handling equipment unit
or a number of linked continuous handling equipment units (e.g. bucket wheel of a bucket wheel excavator or
of a reclaimer), as well as the conveying route drives of the downstream continuous handling equipment units,
shall be interlocking so as to avoid spillage. The specific requirements regarding the controls necessary for
this purpose shall be agreed between the manufacturer and user.
Where continuous handling equipment can be operated in the unlocked mode for maintenance and inspection
purposes, the unlocked mode shall preclude start-up from any location other than the unlocking point.
Continuous handling equipment shall be fitted with an optical and/or audible start-up warning device whose
signals, when in interlocking mode, automatically announce the start-up of the conveying element early
enough for endangered persons to move aside or have the time to prevent the start-up. The warning signals
shall conform to the requirements of EN 457. In the unlocked operating mode it shall be possible to actuate
the start-up warning device from any location from which a conveying element can be activated.
Conveying elements that can be overlooked from the control station and where vocal communication is
possible do not require a start-up warning device.
Spillage conveyors that form part of a belt conveyor and, in the interlocking operating mode, can only be
activated and de-activated together with the belt conveyor do not require their own start-up warning device.
Where such spillage conveyors are operated in unlocked mode, they do not require any start-up warning
device of their own if they can be overlooked from the control station and vocal communication is possible.
Devices shall be fitted which, before adjustment movements are performed (e.g. lifting, slewing, travelling),
enable a warning to be given by optical and/or audible signals.
5.3.3 Stopping, restarting after actuation of the stop device
5.3.3.1 General
Continuous handling equipment shall be fitted with devices capable of stopping and halting the equipment
even at maximum load, while taking the inclination of the continuous handling equipment into account. This
does not apply to continuous handling equipment that, as a result of its design, comes to and remains at a halt
without such devices in accordance with the operational and safety requirements.
The stopping and halting of the continuous handling equipment shall also function in case of faulty
disconnection of the electric power.
The drives of the excavating and loading elements feeding any individual continuous handling equipment unit
or a number of linked continuous handling equipment units (e.g. bucket wheel of a bucket wheel excavator or
of a reclaimer), as well as the conveying route drives of the downstream continuous handling equipment units,
shall be interlocking so that individual continuous handling equipment units are stopped automatically once
the downstream continuous handling equipment receiving their material is halted or stops operating.
Continuous handling equipment shall have emergency stop devices that conform to stop category 0 or 1 in
accordance with EN 418.
Exceptions from this are belt conveyors used in opencast mining, unless they are an integral part of a
continuous handling equipment system. An emergency stop device cannot reduce a hazard for belt conveyors
in opencast mining. These shall have local stop devices that meet the requirements of 5.3.3.2.
5.3.3.2 Stop device requirements
Stop devices for deactivation of the continuous handling equipment shall be installed in the areas provided for
local inspection during operation.
Pull-cord operated switches or push-button operated switches may be used as operating elements for the stop
devices. It is also possible to use other solutions instead of pull-cord or push-button operated switches that
ensure equal safety
The spacing between the stop devices shall not be more than 150 m. Furthermore, stop devices shall be
provided at all locations from which the belt conveyor can be activated.
Where pull-cord systems are used, the pull cord shall be designed as a corrosion-proof and adequately
dimensioned wire rope, in keeping with the expected ambient conditions.
Upon actuation of a stop device, the stopping process shall be initiated immediately; in the case of linked
continuous handling equipment units, delayed stopping of the downstream units receiving material is
permissible to avoid spillage.
Stopping shall take place in controlled or uncontrolled mode, with or without power disconnection.
Unauthorized restarting of the continuous handling equipment shall not be possible after actuation of a stop
device.
Spillage conveyors that form part of a belt conveyor and can only be started up together with the belt conveyor
in interlocking operating mode do not require a stop device of their own if, in the unlocked operating mode, the
spillage conveyor can be overlooked from the control station.
Drives of associated equipment shall have local control devices for their activation/deactivation. The control
devices shall conform to the requirements applicable to stop devices, and the operating element shall remain
in the "off" position until it is intentionally returned to the "on" position.
The unlocking of one or more continuous handling equipment unit(s) shall not render the stop devices
ineffective.
5.3.4 Unexpected or unintended start-up
It shall be possible to safeguard continuous handling equipment against unauthorized start-up in accordance
with the requirements of EN 1037.
It shall be ensured that the stop devices are clearly identified, that they clearly indicate the switching position,
and that it is clearly defined in which part of the equipment the disconnection is effective. For this purpose,
continuous handling equipment shall be fitted with devices allowing all-pole interruption. Appropriate
arrangements to preclude unintended start-up shall be provided. Where the device is freely accessible, it shall
have a locking mechanism. If it is located in a closed electrical operating area, warning signs will be sufficient.
A stop device and, if required, a brake system and/or arresting device shall be provided to prevent the risk of
any unforeseen start-up during maintenance and cleaning activities.
Drives shall not be able to start up unintentionally after restoration of the power supply.
5.4 Thermal hazards
The conditions in the continuous handling equipment and systems falling within the scope of this standard are
so diverse that it is not possible to lay down general requirements. Special requirements shall be agreed
between the manufacturer and user. Agreed requirements shall be documented.
A suitable device shall be provided to monitor the occurrence of any significant differences between the
circumferential velocity of selected drive pulleys and the rate of motion of the conveying element (slip). For
how long and to what extent differences in speed may occur without this being identified as a fault and,
consequently, a stop being triggered are dependent on the technical data of the continuous handling
equipment in question.
Conveyor systems susceptible to off-track running shall be equipped with off-track monitoring devices.
5.5 Radiation hazards
Where radiating devices such as laser measuring instruments, X-ray equipment or measuring apparatus
operating with radioactive beams are used in continuous handling equipment, the usual safety standards for
such devices and the supplier's instructions for the component concerned shall be observed.
5.6 Hazards due to handled materials
The manufacturer shall take into consideration the characteristics of the materials handled.
The occurrence of spillage and caking shall be taken into account when designing and specifying the
continuous handling equipment.
In working areas where there is the risk of handled material being ejected from the sides and this cannot be
avoided through primary measures such as chuting, deflector guides or rope arrangements, for example,
secondary precautions shall be taken, such as protective roofing or catch nets. The hazardous areas shall be
identified, taking into consideration the properties of the handled material (granular material, lumps or similar),
the conveying speed and inclination of the conveyor.
At passageways and thoroughfares, precautions in the form of protective roofing or catch nets, for example,
shall be taken to safeguard against falling materials.
Spillage from linked continuous handling equipment shall be prevented by means of interlocking operation.
The removal of spillage and caking shall be possible without any risk, particularly in the feed hoppers.
Where hazards are generated by dust, appropriate technical and/or organizational measures shall ensure that
the values admissible for workplaces are not exceeded.
5.7 Hazard
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