SIST EN 14658:2005+A1:2010
(Main)Continuous handling equipment and systems - General safety requirements for continuous handling equipment for opencast lignite mining
Continuous handling equipment and systems - General safety requirements for continuous handling equipment for opencast lignite mining
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).
Stetigförderer und Systeme - Allgemeine Sicherheits-Anforderungen an Stetigförderer im Braunkohlentagebau
Diese Europäische Norm gilt für mechanische Stetigförderer in Braunkohlentagebauen und diejenigen
mechanischen Stetigförderer:
⎯ mit denen Braunkohle oder Abraum aus dem Tagebau herausgefördert werden oder
⎯ mit denen die Reststoffe der Braunkohlenverarbeitung in den Tagebau zurück gefördert werden,
⎯ mit denen Braunkohle, Abraum oder Reststoffe der Braunkohleverarbeitung von einem Tagebau in einen
anderen Tagebau gefördert werden.
Diese Norm gilt für Stetigförderer, die in einem abgegrenzten Betriebsgelände, das der Öffentlichkeit nicht
zugänglich ist, betrieben werden und nur für befugte Personen zugänglich ist.
Sie legt Anforderungen an die Sicherheit für ortsfeste, fahrbare und rückbare Stetigförderer fest, die für den
Transport von Schüttgütern durch stetige Bewegung von einer Aufgabestelle zu einer Abwurfstelle
vorgesehen sind.
Die Norm behandelt die signifikanten Gefährdungen, die bei der Anwendung sowie beim Fahren und Rücken
von Stetigförderern entstehen, und Maßnahmen zur Beseitigung dieser Gefährdungen oder ihrer
Verminderung, sofern die Stetigförderer bestimmungsgemäß eingesetzt werden und die verbleibende
Restgefahr vom Hersteller vorhergesehen und in Kauf genommen wurde. Eine vollständige Liste aller
Gefährdungen nach EN 1050 ist im Anhang A (normativ) wiedergegeben.
Die Anforderungen dieser Norm gelten nicht für Einrichtungen und Systeme, die vor dem Erscheinungsdatum
dieser Norm hergestellt und in Verkehr gebracht wurden.
In dieser Norm sind nicht behandelt:
a) Sicherheitsanforderungen an kabellose Fernsteuerungen;
b) Gefährdungen durch Lärm;
c) Gefährdungen durch Vibration;
d) Gefährdungen durch Explosion;
e) Gefährdungen durch elektromagnetische Störungen (EMV).
(...)
Equipements et systèmes de manutention continue - Prescriptions générales de sécurité aux équipements de manutention continue utilisés dans les mines de lignite à ciel ouvert
La présente norme européenne s'applique aux équipements mécaniques de manutention continue utilisés dans les
mines de lignite à ciel ouvert et aux équipements mécaniques de manutention continue permettant :
- d’extraire le lignite ou les morts-terrains à ciel ouvert ou
- de ramener les résidus du traitement du lignite dans la mine,
- de transporter le lignite, les déblais ou les résidus du traitement du lignite d’une mine dans une autre.
La présente norme s'applique aux équipements de manutention continue utilisés sur un site délimité et inaccessible
au grand public et dont l’accès est réservé aux personnes autorisées.
Elle définit les prescriptions relatives à la sécurité pour les équipements de manutention continue fixes, mobiles
et déplaçables, prévus pour le transport de produits en vrac par manutention continue entre un point de chargement
et un point de déchargement.
La présente norme traite des phénomènes dangereux significatifs encourus lors de l'utilisation et du déplacement des
équipements de manutention continue ainsi que des mesures permettant d'éliminer ou de réduire ces risques,
à condition que les équipements mécaniques de manutention continue aient été utilisés comme prévu et que le
constructeur ait prévu et pris en compte le risque résiduel. L'Annexe A (normative) donne une liste complète de tous
les phénomènes dangereux conformément à l’EN 1050.
Les prescriptions de la présente norme ne s’appliquent pas aux équipements et systèmes fabriqués et mis sur le
marché avant la date de publication de la présente norme.
Naprave in sistemi za kontinuirni transport - Splošne varnostne zahteve za kontinuirne transporterje pri dnevnih kopih rjavega premoga in lignita
Ta evropski standard se uporablja za strojne naprave za kontinuirni transport, ki se uporabljajo pri dnevnih kopih rjavega premoga in lignita in posebne naprave za kontinuirni transport, ki se uporabljajo: za pošiljanje lignita ali krovne plasti iz dnevnih kopov rudnikov; za pošiljanje ostankov in jalovine iz predelave lignita v dnevne kope rudnikov; za pošiljanje lignita, krovne plasti ali jalovine in ostankov postopka obdelave lignita iz enega dnevnega kopa rudnika v drugega. Ta standard se uporablja za naprave za kontinuirni transport, ki obratujejo v razmejenih področjih, kjer je javnosti dostop prepovedan in so dostopna samo pooblaščenim osebam. Določa varnostne zahteve za nepremične, premične in premestljive naprave za kontinuirni transport, ki so zasnovane za transport razsutega tovora s kontinuirnim gibanjem od točke nakladanja do točke raztovora. Standard upošteva velike nevarnosti, do katerih pride med uporabo, gibanjem in premeščanjem naprav za kontinuirni transport, kot tudi ukrepe za preprečevanje ali zmanjševanje teh nevarnosti, pod pogojem da se naprave za kontinuirni transport uporabljajo v skladu z namembnostjo in je proizvajalec predvidel in upošteval preostalo tveganje. Popoln spisek vseh nevarnosti, opredeljenih v EN 1050, je podan v Dodatku A (normativni). Zahteve tega standarda se ne uporabljajo za opremo in sisteme, ki so proizvedeni in dani v obratovanje pred datumom objave tega standarda. Ta standard ne zajema: a) varnostnih zahtev za brezžične sisteme daljinskega upravljanja; b) nevarnosti, ki jih povzroči hrup; c) nevarnosti, ki jih povzročijo tresljaji; d) nevarnosti, ki jih povzroči eksplozija; e) nevarnosti, ki jih povzročijo elektromagnetne motnje (EMC).
General Information
Relations
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Naprave in sistemi za kontinuirni transport - Splošne varnostne zahteve za kontinuirne transporterje pri dnevnih kopih rjavega premoga in lignitaStetigförderer und Systeme - Allgemeine Sicherheits-Anforderungen an Stetigförderer im BraunkohlentagebauEquipements et systèmes de manutention continue - Prescriptions générales de sécurité aux équipements de manutention continue utilisés dans les mines de lignite à ciel ouvertContinuous handling equipment and systems - General safety requirements for continuous handling equipment for opencast lignite mining53.040.10TransporterjiConveyorsICS:Ta slovenski standard je istoveten z:EN 14658:2005+A1:2010SIST EN 14658:2005+A1:2010en,fr,de01-april-2010SIST EN 14658:2005+A1:2010SLOVENSKI
STANDARD
SIST EN 14658:2005+A1:2010
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 14658:2005+A1
February 2010 ICS 53.040.10 Supersedes EN 14658:2005English Version
Continuous handling equipment and systems - General safety requirements for continuous handling equipment for opencast lignite mining
Equipements et systèmes de manutention continue - Prescriptions générales de sécurité aux équipements de manutention continue utilisés dans les mines de lignite à ciel ouvert
Stetigförderer und Systeme - Allgemeine Sicherheits-Anforderungen an Stetigförderer im Braunkohlentagebau This European Standard was approved by CEN on 25 March 2005 and includes Amendment 1 approved by CEN on 11 January 2010.
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 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 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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14658:2005+A1:2010: ESIST EN 14658:2005+A1:2010
EN 14658:2005+A1:2010 (E) 2 Contents Page Foreword .4Introduction .51Scope .62Normative references .63Terms and definitions .74List of significant hazards .94.1General .94.2Mechanical hazards .94.2.1Crushing and shearing .94.2.2Entanglement, drawing-in and trapping .94.2.3Stability .94.2.4Hazards generated by fracturing and rupturing during operation . 104.2.5Hazards generated by slipping, tripping and falling . 104.3Electrical equipment hazards . 104.4Thermal hazards . 104.5Radiation hazards . 104.6Hazards due to handled materials . 104.7Hazards due to neglect of ergonomic principles . 104.8Hazards due to energy supply failure . 114.9Combination of hazards . 115Safety requirements and/or measures . 115.1General . 115.2Mechanical hazards . 115.2.1Crushing and shearing hazards . 115.2.2Entanglement, drawing-in and trapping . 125.2.3Stability . 125.2.4Hazards generated by fracturing and rupturing during operation . 125.2.5Access . 125.3Electrical equipment requirements . 145.3.1General . 145.3.2Start-up . 145.3.3Stopping, restarting after actuation of the stop device . 145.3.4Unexpected or unintended start-up . 155.4Thermal hazards . 165.5Radiation hazards . 165.6Hazards due to handled materials . 165.7Hazards due to neglect of ergonomic principles . 165.8Hazards due to energy supply failure . 175.9Combination of hazards . 176Verification of compliance with safety requirements and/or measures . 176.1General . 176.2Documents demonstrating compliance at the design/manufacturing stages . 176.3Verification at the place of installation . 177Information for use . 207.1General . 207.2Signals and warning devices . 207.3Accompanying documentation (operating instruction handbook) . 207.3.1General . 20SIST EN 14658:2005+A1:2010
EN 14658:2005+A1:2010 (E) 3 7.3.2Information on the continuous handling equipment . 207.3.3Instructions for the use of the continuous handling equipment . 217.3.4Instructions for maintenance . 227.4Marking . 22Annex 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 . 23Annex ZA (informative)
!!!!Relationship between this European Standard and the
Essential Requirements of EU Directive 98/37/EC amended by 98/79/EC"""" . 28Annex ZB (informative)
!!!!Relationship between this European Standard and the
Essential Requirements of EU Directive 2006/42/EC"""" . 30 SIST EN 14658:2005+A1:2010
EN 14658:2005+A1:2010 (E) 4 Foreword This document (EN 14658:2005+A1:2010) has been prepared by Technical Committee CEN/TC 196 “Machines for underground mines - Safety”, the secretariat of which is held by DIN. 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 August 2010, and conflicting national standards shall be withdrawn at the latest by August 2010. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document includes Amendment 1, approved by CEN on 2010-01-11. This document supersedes EN 14658:2005. The start and finish of text introduced or altered by amendment is indicated in the text by tags
!". This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). !For relationship with EU Directives, see informative Annexes ZA and ZB, which are integral parts of this document." According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. SIST EN 14658:2005+A1:2010
EN 14658:2005+A1:2010 (E) 5 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.
SIST EN 14658:2005+A1:2010
EN 14658:2005+A1:2010 (E) 6 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 SIST EN 14658:2005+A1:2010
EN 14658:2005+A1:2010 (E) 7 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 SIST EN 14658:2005+A1:2010
EN 14658:2005+A1:2010 (E) 8 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 SIST EN 14658:2005+A1:2010
EN 14658:2005+A1:2010 (E) 9 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; SIST EN 14658:2005+A1:2010
EN 14658:2005+A1:2010 (E) 10 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. SIST EN 14658:2005+A1:2010
EN 14658:2005+A1:2010 (E) 11 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. SIST EN 14658:2005+A1:2010
EN 14658:2005+A1:2010 (E) 12 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 s
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